CN209486446U - Optical imaging module and apparatus - Google Patents

Abstract

The utility model discloses an optical imaging module and equipment, this optical imaging module contain a circuit component and a lens component. The circuit element comprises a circuit substrate, a sensor bracket and an image sensing element; the sensor support is arranged on the circuit substrate, the surface of the image sensing element facing the circuit substrate is provided with image contacts, and the image contacts are connected with the circuit contacts of the circuit substrate through signal conducting elements arranged on the image contacts. The lens element comprises a lens base and a lens group; the lens base is provided with a containing hole which penetrates through two ends and is hollow, and the lens base is arranged on the sensor bracket so that the containing hole is opposite to the image sensing element; the lens base is arranged on the circuit substrate to enable the image sensing element to be positioned in the containing hole; the lens group is arranged on the lens base and positioned in the accommodating hole, so that light can pass through the lens group and is projected to the sensing surface of the image sensing element.

Description

Optical Imaging Modules and Devices

technical field

The utility model relates to an optical imaging module, and in particular to an optical imaging module applied to electronic products and capable of miniaturization.

Background technique

In recent years, with the rise of portable electronic products with photography functions, the demand for optical systems has increased day by day. The photosensitive element of the general optical system is nothing more than two kinds of photosensitive coupling device (Charge Coupled Device; CCD) or complementary metal oxide semiconductor element (Complementary Metal-Oxide Semiconductor Sensor; CMOSSensor), and with the progress of semiconductor process technology, making The pixel size of the photosensitive element is reduced, and the optical system is gradually developing towards a high-pixel direction, so the requirements for image quality are also increasing.

The optical system traditionally mounted on portable devices, due to the continuous development of portable devices in the direction of pixel enhancement, and the increasing demand of end consumers for large aperture, such as low-light and night shooting functions, the size of the existing optical imaging module and The image quality can no longer meet the higher-level photography requirements.

Therefore, how to effectively achieve a miniaturized structure while further improving the imaging quality has become a very important issue.

Utility model content

The aspect of the embodiment of the present invention is aimed at an optical imaging module, which can use the design of the structural size and cooperate with the refractive power of two or more lenses, the combination of the convex surface and the concave surface (the convex surface or the concave surface in the utility model refers to each lens in principle) The description of the geometric shape changes at different heights from the object side or the image side to the optical axis), thereby achieving the purpose of miniaturization, and at the same time effectively increasing the amount of light entering the optical imaging module and increasing the viewing angle of the optical imaging lens. In this way, it is convenient The optical imaging module can have a certain relative illuminance and improve the total pixels and quality of imaging, and then can be applied to electronic products with small or narrow borders.

The terms and codes of the mechanism element parameters related to the embodiment of the present utility model are listed in detail as follows, as a reference for subsequent descriptions:

First, take FIG. 1A as an example to describe the terminology of the used mechanism elements. The optical imaging module mainly includes a circuit element and a lens element. The circuit element may include a circuit substrate EB, a sensor bracket SB and an image sensing element S, and in the present utility model, the image sensing element S is fixed on the chip size package (Chip Scale Package) on the circuit board EB. It can also be a packaging method of Wafer Level Chip Scale Package (WLCS).

The lens element may include a lens base LB1 and a lens group L. The lens base LB1 is mainly made of metal (such as aluminum, copper, silver, gold, etc.), or plastic such as polycarbonate (PC), liquid crystal plastic (LCP) and other opaque materials. In addition, the maximum value of the minimum side length of the outer peripheral edge of the lens base LB1 and the plane perpendicular to the optical axis of the lens group L is represented by PhiD, and the lens base LB1 has a receiving hole running through both ends in the shape of Hollow; the lens base LB1 is disposed on the sensor bracket SB so that the accommodating hole faces the image sensing element S. More specifically, the lens base LB1 may have a lens holder LH1 and a lens barrel B1. The lens holder LH1 is hollow and does not have light transmission, and the lens barrel B1 is also hollow and does not have light transmission and is arranged in the lens holder LH1, and the interior of the lens barrel B1 and the lens holder LH1 jointly constitute the accommodating hole . In addition, the maximum thickness of this lens holder LH1 is represented by TH1. The minimum thickness of the lens barrel B1 is represented by TH2.

The lens group L includes at least two lenses with refractive power, and is disposed on the lens base LB1 and located in the accommodating hole. The terms and codes of lens parameters related to the embodiment of the present utility model are listed as follows, as a reference for subsequent descriptions:

Lens parameters related to length or height

The maximum imaging height of the optical imaging module is represented by HOI; the height of the optical imaging module (that is, the distance on the optical axis from the object side of the first lens to the imaging surface) is represented by HOS; the first lens object side of the optical imaging module to The distance between the last lens image sides is represented by InTL; the distance between the fixed diaphragm (aperture) of the optical imaging module and the imaging surface is represented by InS; the distance between the first lens and the second lens of the optical imaging module is represented by IN12 ( example); the thickness of the first lens of the optical imaging module on the optical axis is represented by TP1 (example).

Material-Dependent Lens Parameters

The dispersion coefficient of the first lens of the optical imaging module is represented by NA1 (example); the refraction law of the first lens is represented by Nd1 (example).

Lens parameters related to viewing angle

The angle of view is represented by AF; half of the angle of view is represented by HAF; the chief ray angle is represented by MRA.

Lens parameters related to entrance and exit pupils

The diameter of the entrance pupil of the optical imaging module is represented by HEP; the maximum effective radius of any surface of a single lens refers to the intersection point (Effective Half Diameter; EHD) of the incident light at the maximum viewing angle of the system passing through the edge of the entrance pupil on the surface of the lens (Effective Half Diameter; EHD). Vertical height from the optical axis. For example, the maximum effective radius on the object side of the first lens is represented by EHD11, and the maximum effective radius on the image side of the first lens is represented by EHD12. The maximum effective radius on the object side of the second lens is represented by EHD21, and the maximum effective radius on the image side of the second lens is represented by EHD22. The representation of the maximum effective radius of any surface of the remaining lenses in the optical imaging module can be deduced by analogy. The maximum effective diameter of the image side of the lens closest to the imaging surface in the optical imaging module is represented by PhiA, which satisfies the conditional formula PhiA=2 times EHD. If the surface is aspherical, the cut-off point of the maximum effective diameter is the aspheric surface cutoff point. The Ineffective Half Diameter (IHD) of any surface of a single lens refers to the cut-off point of the maximum effective radius extending from the same surface in the direction away from the optical axis (if the surface is aspheric, that is, the surface has an aspheric coefficient end point) of the surface segment. The maximum diameter of the image side of the lens closest to the imaging surface in the optical imaging module is represented by PhiB, which satisfies the conditional formula PhiB=2 times (maximum effective radius EHD+maximum invalid radius IHD)=PhiA+2 times (maximum invalid radius IHD).

The maximum effective diameter of the image side of the lens closest to the imaging surface (i.e., the image space) in the optical imaging module can also be called the optical exit pupil, which is represented by PhiA. If the optical exit pupil is located on the image side of the third lens, it is represented by PhiA3 If the optical exit pupil is on the image side of the fourth lens, it will be represented by PhiA4; if the optical exit pupil is on the fifth lens image side, it will be represented by PhiA5; if the optical exit pupil is on the sixth lens image side, it will be represented by PhiA6. If the optical imaging module For lenses with different numbers of refractive powers, the representation of the optical exit pupil can be deduced by analogy. The pupil dilation ratio of the optical imaging module is represented by PMR, and its satisfying conditional formula is PMR=PhiA/HEP.

Parameters related to lens surface arc length and surface profile

The length of the contour curve of the maximum effective radius of any surface of a single lens refers to the intersection point of the surface of the lens and the optical axis of the optical imaging module to which it belongs, as the starting point, from the starting point along the surface contour of the lens to its maximum effective radius Up to the end point of the curve, the arc length of the curve between the aforementioned two points is the length of the contour curve of the maximum effective radius, and is expressed in ARS. For example, the length of the contour curve of the maximum effective radius on the object side of the first lens is represented by ARS11 , and the length of the contour curve of the maximum effective radius on the image side of the first lens is represented by ARS12 . The length of the contour curve of the maximum effective radius on the object side of the second lens is represented by ARS21 , and the length of the contour curve of the maximum effective radius on the image side of the second lens is represented by ARS22 . The representation of the length of the contour curve of the maximum effective radius of any surface of the other lenses in the optical imaging module can be deduced by analogy.

The length of the contour curve of the 1/2 entrance pupil diameter (HEP) of any surface of a single lens refers to the intersection point of the surface of the lens and the optical axis of the optical imaging module to which it belongs, as the starting point, along the surface of the lens from the starting point The contour reaches the coordinate point on the surface that is 1/2 the vertical height of the entrance pupil diameter from the optical axis, and the arc length of the curve between the aforementioned two points is the contour curve length of 1/2 the entrance pupil diameter (HEP), and is represented by ARE. For example, the contour curve length of 1/2 entrance pupil diameter (HEP) on the object side of the first lens is represented by ARE11, and the contour curve length of 1/2 entrance pupil diameter (HEP) on the image side of the first lens is represented by ARE12. The contour curve length of 1/2 entrance pupil diameter (HEP) on the object side of the second lens is represented by ARE21, and the contour curve length of 1/2 entrance pupil diameter (HEP) on the image side of the second lens is represented by ARE22. The representation of the length of the contour curve of the 1/2 entrance pupil diameter (HEP) of any surface of the other lenses in the optical imaging module can be deduced by analogy.

Parameters related to lens surface depth

From the intersection point of the object side of the sixth lens on the optical axis to the end point of the maximum effective radius of the object side of the sixth lens, the distance between the above two points horizontal to the optical axis is represented by InRS61 (maximum effective radius depth); the image side of the sixth lens From the intersection point on the optical axis to the end point of the maximum effective radius on the image side of the sixth lens, the distance horizontal to the optical axis between the above two points is represented by InRS62 (maximum effective radius depth). For the expression of the depth (sinking amount) of the maximum effective radius of the object side or image side of other lenses, compare with the above.

Parameters Related to Lens Surface Type

The critical point C refers to the point on the surface of a specific lens that is tangent to a tangent plane perpendicular to the optical axis, except for the intersection point with the optical axis. For example, the vertical distance between the critical point C51 on the object side of the fifth lens and the optical axis is HVT51 (example), the vertical distance between the critical point C52 on the image side of the fifth lens and the optical axis is HVT52 (example), and the sixth lens object The vertical distance between the critical point C61 on the side surface and the optical axis is HVT61 (example), and the vertical distance between the critical point C62 on the image side of the sixth lens and the optical axis is HVT62 (example). The expression of the critical point on the object side or image side of other lenses and the vertical distance from the optical axis is compared with the above.

The inflection point closest to the optical axis on the object side of the seventh lens is IF711, and the sinking amount of this point is SGI711 (example). The horizontal displacement distance between inflection points parallel to the optical axis, and the vertical distance between the IF711 point and the optical axis is HIF711 (example). The inflection point closest to the optical axis on the image side of the seventh lens is IF721, and the sinking amount of this point is SGI721 (example). The horizontal displacement distance between inflection points parallel to the optical axis, and the vertical distance between the IF721 point and the optical axis is HIF721 (example).

The inflection point of the second closest to the optical axis on the object side of the seventh lens is IF712, and the sinking amount of this point is SGI712 (example). The horizontal displacement distance parallel to the optical axis between the inflection points of the optical axis, and the vertical distance between the point and the optical axis of IF712 is HIF712 (example). The inflection point of the second closest to the optical axis on the seventh lens image side is IF722, and the sinking amount of this point is SGI722 (example). SGI722 is the intersection point of the seventh lens image side on the optical axis to the seventh lens image side second closest The horizontal displacement distance parallel to the optical axis between the inflection points of the optical axis, and the vertical distance between the point and the optical axis of IF722 is HIF722 (example).

The inflection point of the third approaching the optical axis on the object side of the seventh lens is IF713, the sinking amount of this point is SGI713 (example), SGI713 is the intersection point of the object side of the seventh lens on the optical axis to the third approaching The horizontal displacement distance parallel to the optical axis between the inflection points of the optical axis, and the vertical distance between the point and the optical axis of IF713 is HIF713 (example). The inflection point of the third approach to the optical axis on the image side of the seventh lens is IF723, and the sinking amount of this point is SGI723 (example). The horizontal displacement distance parallel to the optical axis between the inflection points of the optical axis, and the vertical distance between the point and the optical axis of IF723 is HIF723 (example).

The inflection point of the fourth near the optical axis on the object side of the seventh lens is IF714, and the sinking amount of this point is SGI714 (example). The horizontal displacement distance parallel to the optical axis between the inflection points of the optical axis, and the vertical distance between the point and the optical axis of IF714 is HIF714 (example). The inflection point of the fourth closest to the optical axis on the image side of the seventh lens is IF724, and the sinking amount of this point is SGI724 (example). The horizontal displacement distance parallel to the optical axis between the inflection points of the optical axis, and the vertical distance between the point and the optical axis of IF724 is HIF724 (example).

The expression of the inflection point on the object side or image side of other lenses and its vertical distance from the optical axis or its sinking amount is compared with the above.

Variables related to aberrations

The optical distortion (Optical Distortion) of the optical imaging module is represented by ODT; its TV distortion (TVDistortion) is represented by TDT, and can be further defined to describe the degree of aberration shift between 50% and 100% of the imaging field; spherical aberration shift The amount is expressed in DFS; the coma aberration offset is expressed in DFC.

The utility model provides an optical imaging module, the object side or image side of the sixth lens can be provided with an inflection point, which can effectively adjust the incident angle of each field of view on the sixth lens, and correct for optical distortion and TV distortion . In addition, the surface of the sixth lens can have a better optical path adjustment capability to improve imaging quality.

According to the utility model, an optical imaging module is provided, which includes a circuit element, a sensor bracket and a lens element. Wherein, the circuit element includes a circuit substrate, a sensor bracket and an image sensing element; the circuit substrate has a plurality of circuit contacts; the sensor bracket is arranged on the circuit substrate; the image sensing element has a first surface and a second surface Two surfaces, the first surface faces the circuit substrate and has a plurality of image contacts, and the plurality of image contacts are respectively provided with a signal conduction element, and the plurality of signal conduction elements are respectively connected to the plurality of circuits on the circuit substrate The contacts are connected so that the multiple image contacts are electrically connected to the corresponding circuit contacts through the signal conducting elements arranged thereon; the second surface has a sensing surface; in addition, the image sensing element and the plurality of signal conducting elements The element is surrounded by the sensor holder. The lens element includes a lens base and a lens group; the lens base is made of opaque material, and has an accommodating hole passing through both ends of the lens base to make the lens base hollow; in addition, the lens base The lens base is arranged on the sensor bracket so that the accommodating hole is facing the image sensing element; the lens group includes at least two lenses with refractive power, and is arranged on the lens pedestal and is located in the accommodating hole In addition, the imaging surface of the lens group is located on the sensing surface, and the optical axis of the lens group overlaps with the central normal of the sensing surface, so that light can pass through the lens group in the accommodating hole and be projected to the sensing surface. In addition, the optical imaging module satisfies the following conditions: 1.0≤f/HEP≤10.0; 0deg<HAF≤150deg; 0mm<PhiD≤18mm; 0<PhiA/PhiD≤0.99; and 0.9≤2(ARE/HEP)≤2.0 . Among them, f is the focal length of the lens group; HEP is the entrance pupil diameter of the lens group; HAF is half of the maximum viewing angle of the lens group; PhiD is the outer periphery of the lens base and the light perpendicular to the lens group The maximum value of the minimum side length on the plane of the axis; PhiA is the maximum effective diameter of the lens surface of the lens group closest to the imaging surface; ARE takes the intersection point of any lens surface of any lens in the lens group and the optical axis as The starting point and the end point at the vertical height of 1/2 the diameter of the entrance pupil from the optical axis are the length of the contour curve obtained along the contour of the lens surface.

Among them, the optical imaging module satisfies the following conditions:

0.9≤ARS/EHD≤2.0; where, ARS starts from the intersection point of any lens surface of any lens in the lens group and the optical axis, and ends at the maximum effective radius of the lens surface, along the lens surface EHD is the maximum effective radius of any surface of any lens in the lens group.

Among them, the optical imaging module satisfies the following conditions: PLTA≤100μm; PSTA≤100μm; NLTA≤100μm; NSTA≤100μm; SLTA≤100μm; SSTA≤100μm; and │TDT│<250%; The maximum imaging height on the imaging surface perpendicular to the optical axis; PLTA is the lateral aberration of the longest operating wavelength of visible light of the positive meridian plane light fan of the optical imaging module passing through the edge of the entrance pupil and incident on the imaging surface at 0.7HOI ; PSTA is the shortest operating wavelength of visible light of the positive meridian plane light fan of the optical imaging module, which passes through the edge of the entrance pupil and is incident on the imaging surface at 0.7HOI. The lateral aberration NLTA is the negative meridian plane light of the optical imaging module The longest operating wavelength of visible light of the fan passes through the edge of the entrance pupil and is incident on the imaging surface at 0.7HOI; NSTA is the shortest operating wavelength of visible light of the negative meridian plane of the optical imaging module passing through the edge of the entrance pupil and the lateral aberration incident on the imaging surface at 0.7HOI; SLTA is the lateral image of the longest working wavelength of visible light of the sagittal plane light fan of the optical imaging module passing through the edge of the entrance pupil and incident on the imaging surface at 0.7HOI difference; SSTA is the lateral aberration of the visible light shortest operating wavelength of the sagittal plane light fan of the optical imaging module passing through the entrance pupil edge and incident on the imaging surface at 0.7HOI; TDT is the TV of the optical imaging module at the time of imaging distortion.

Wherein, the lens group includes four lenses with refractive power, which are a first lens, a second lens, a third lens and a fourth lens in sequence from the object side to the image side, and the lens group meets the following conditions : 0.1≤InTL/HOS≤0.95; where, HOS is the distance from the object side of the first lens to the imaging plane on the optical axis; InTL is the distance from the object side of the first lens to the image side of the fourth lens on the optical axis distance on the axis.

Wherein, the lens group includes five lenses with refractive power, which are a first lens, a second lens, a third lens, a fourth lens and a fifth lens in sequence from the object side to the image side, and the The lens group satisfies the following conditions: 0.1≤InTL/HOS≤0.95; wherein, HOS is the distance from the object side of the first lens to the imaging plane on the optical axis; InTL is the distance from the object side of the first lens to the fifth lens The distance between the image side and the optical axis.

Wherein, the lens group includes six lenses with refractive power, which are a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a first lens in sequence from the object side to the image side. Six lenses, and the lens group meets the following conditions: 0.1≤InTL/HOS≤0.95; wherein, HOS is the distance from the object side of the first lens to the imaging plane on the optical axis; InTL is the object side of the first lens The distance from the image side of the sixth lens on the optical axis.

Wherein, the lens group includes seven lenses with refractive power, which are sequentially a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a first lens from the object side to the image side. Six lenses and a seventh lens, and the lens group meets the following conditions: 0.1≤InTL/HOS≤0.95; wherein, HOS is the distance from the object side of the first lens to the imaging plane on the optical axis; InTL is the distance of the second lens The distance on the optical axis from the object side of a lens to the image side of the seventh lens.

Wherein, the optical imaging module further satisfies the following conditions: MTFQ0≥0.2; MTFQ3≥0.01; and MTFQ7≥0.01; among them, HOI is defined as the maximum imaging height perpendicular to the optical axis of the imaging surface; MTFQ0 is the visible light on the imaging surface MTFQ3 is the modulation conversion contrast transfer ratio when the optical axis above is at the spatial frequency of 110cycles/mm; MTFQ3 is the modulation conversion contrast transfer ratio of visible light on the imaging plane when the 0.3HOI is at the spatial frequency of 110cycles/mm; MTFQ7 is the visible light on the imaging plane The modulation conversion versus transfer ratio of the 0.7 HOI at the spatial frequency of 110 cycles/mm.

Wherein, the optical imaging module further includes an aperture, and the aperture satisfies the following formula: 0.2≤InS/HOS≤1.1; wherein, InS is the distance from the aperture to the imaging plane on the optical axis; HOS is the farthest distance from the lens group The distance from the lens surface of the imaging plane to the imaging plane on the optical axis.

Wherein, the lens base includes a lens barrel and a lens holder; the lens holder is fixed on the circuit board and has a lower through hole passing through both ends of the lens holder, so that the image sensing element S is located in the lower through hole , the lens barrel is set in the lens holder and is located in the lower through hole, the lens barrel has an upper through hole passing through both ends of the lens barrel, and the upper through hole communicates with the lower through hole to jointly form the accommodating hole; the lens bracket is fixedly arranged on the sensor bracket, and the upper through hole of the lens barrel is facing the sensing surface of the image sensing element; in addition, the lens group is arranged in the lens barrel and is located in the upper through hole , and PhiD refers to the maximum value of the minimum side length on a plane perpendicular to the optical axis of the lens group at the outer periphery of the lens holder.

Wherein, the optical imaging module further satisfies the following conditions: 0mm<TH1+TH2≤1.5mm; wherein, TH1 is the maximum thickness of the lens holder; TH2 is the minimum thickness of the lens barrel.

Wherein, the optical imaging module satisfies the following conditions: 0<(TH1+TH2)/HOI≤0.95; wherein, TH1 is the maximum thickness of the lens holder; TH2 is the minimum thickness of the lens barrel; HOI is the vertical thickness of the imaging surface The maximum imaging height on the optical axis.

Wherein, the outer peripheral wall of the lens barrel has an external thread, and the lens holder has an internal thread on the wall of the lower through hole screwed with the external thread, so that the lens barrel is arranged in the lens holder and fixed on the lens holder. in the lower through-hole.

Wherein, glue is arranged between the lens barrel and the lens bracket and is fixed with glue, so that the lens barrel is arranged in the lens bracket and fixed in the lower through hole.

Wherein, the lens base is made in an integral molding manner.

Wherein, the optical imaging module further includes an infrared filter, and the infrared filter is arranged in the lens base or on the sensor bracket and is located above the image sensing element.

Wherein, the optical imaging module further includes an infrared filter, which is arranged in the lens barrel, in the lens bracket or on the sensor bracket and is located above the image sensing element.

Wherein, the optical imaging module further includes an infrared filter, and the lens base includes a filter holder, and the filter holder has a filter through hole passing through both ends of the filter holder, and the infrared The optical filter is arranged in the optical filter holder and located in the through hole of the optical filter, and the optical filter holder is arranged on the sensor holder, so that the infrared filter is located above the image sensing element.

Wherein, the lens base includes a lens barrel and a lens holder; the lens barrel has an upper through hole passing through both ends of the lens barrel, and the lens holder has a lower through hole passing through the two ends of the lens holder, the lens barrel Set in the lens holder and located in the lower through hole; the lens holder is fixed on the filter holder, and the lower through hole communicates with the upper through hole and the filter through hole to jointly form the accommodating hole , and the upper through hole of the lens barrel is facing the sensing surface of the image sensing element; in addition, the lens group is arranged in the lens barrel and is located in the upper through hole, and PhiD refers to the outer periphery of the lens holder and is vertical The maximum value of the minimum side length on the plane of the optical axis of the lens group.

Wherein, the optical imaging module further satisfies the following conditions: 0mm<TH1+TH2≤1.5mm; wherein, TH1 is the maximum thickness of the lens holder; TH2 is the minimum thickness of the lens barrel.

Wherein, the optical imaging module satisfies the following conditions: 0<(TH1+TH2)/HOI≤0.95; wherein, TH1 is the maximum thickness of the lens holder; TH2 is the minimum thickness of the lens barrel; HOI is the vertical thickness of the imaging surface The maximum imaging height on the optical axis.

Wherein, the outer peripheral wall of the lens barrel has an external thread, and the lens holder has an internal thread on the wall of the lower through hole to be screwed with the external thread, so that the lens barrel is arranged in the lens holder and positioned at the lower through hole. In the through hole; in addition, glue is arranged between the lens holder and the filter holder and fixed with the glue, so that the lens holder is fixed on the filter holder.

Wherein, glue is arranged between the lens barrel and the lens bracket and is fixed with glue, so that the lens barrel is arranged in the lens bracket and is located in the lower through hole; in addition, the lens bracket and the optical filter Adhesive is arranged between the brackets and fixed with the adhesive, so that the lens bracket is fixed on the optical filter bracket.

Wherein, the plurality of signal conducting elements are selected from solder balls, bumps, pins or groups thereof.

Wherein, the optical imaging module is applied to electronic portable equipment, electronic wearable device, electronic monitoring device, electronic information device, electronic communication device, machine vision device, vehicle electronic device and one of the groups formed therefrom.

The length of the contour curve of any surface of a single lens within the maximum effective radius affects the ability of the surface to correct aberrations and the optical path difference between rays of light in each field of view. The longer the length of the contour curve, the better the ability to correct aberrations, but at the same time It will increase the difficulty of production, so it is necessary to control the length of the contour curve of any surface of a single lens within the maximum effective radius range, especially the control of the contour curve length (ARS) within the maximum effective radius range of the surface and the surface The proportional relationship (ARS/TP) between the thickness (TP) of the lens on the optical axis. For example, the length of the contour curve of the maximum effective radius on the object side of the first lens is represented by ARS11, the thickness of the first lens on the optical axis is TP1, the ratio between the two is ARS11/TP1, and the maximum effective radius of the first lens on the image side is The length of the profile curve is represented by ARS12, and the ratio between it and TP1 is ARS12/TP1. The length of the profile curve of the maximum effective radius on the object side of the second lens is represented by ARS21, the thickness of the second lens on the optical axis is TP2, and the ratio between the two is ARS21/TP2, and the profile of the maximum effective radius on the image side of the second lens The length of the curve is represented by ARS22, and the ratio between it and TP2 is ARS22/TP2. The proportional relationship between the length of the contour curve of the maximum effective radius of any surface of the other lenses in the optical imaging module and the thickness (TP) of the lens on the optical axis to which the surface belongs, and so on. In addition, the optical imaging module further satisfies the following condition: 0.9≤ARS/EHD≤2.0.

The longest operating wavelength of visible light of the positive meridian plane light fan of the optical imaging module passes through the edge of the entrance pupil and is incident on the imaging surface at 0.7HOI. The lateral aberration is represented by PLTA; The lateral aberration of the fan with the shortest operating wavelength of visible light passing through the edge of the entrance pupil and incident on the imaging surface at 0.7HOI is represented by PSTA. The longest operating wavelength of visible light of the negative meridian plane light fan of the optical imaging module passes through the edge of the entrance pupil and is incident on the imaging surface at 0.7HOI. The lateral aberration is represented by NLTA; The shortest operating wavelength of visible light of the fan passes through the edge of the entrance pupil and the lateral aberration at 0.7HOI on the imaging surface is represented by NSTA; the longest operating wavelength of visible light of the sagittal plane light fan of the optical imaging module passes through the edge of the entrance pupil and The lateral aberration incident at 0.7HOI on the imaging plane is represented by SLTA; the shortest operating wavelength of visible light of the sagittal light fan of the optical imaging module passes through the edge of the entrance pupil and is incident on the imaging plane at 0.7HOI. Expressed in SSTA. In addition, the optical imaging module satisfies the following conditions: PLTA≤100μm; PSTA≤100μm; NLTA≤100μm; NSTA≤100μm; SLTA≤100μm; SSTA≤100μm; │TDT│<250%; 0.1≤InTL/HOS≤0.95; and 0.2≤InS/HOS≤1.1.

The modulation conversion ratio transfer ratio of visible light on the imaging surface when the optical axis is at a spatial frequency of 110 cycles/mm is represented by MTFQ0; MTFQ3 means; the modulation conversion ratio transfer rate of 0.7 HOI of visible light on the imaging plane at the spatial frequency of 110 cycles/mm is expressed as MTFQ7. In addition, the optical imaging module further satisfies the following conditions: MTFQ0≥0.2; MTFQ3≥0.01; and MTFQ7≥0.01.

Wherein, the lens group includes four lenses with refractive power, which are a first lens, a second lens, a third lens and a fourth lens in sequence from the object side to the image side, and the lens group meets the following conditions : 0.1≤InTL/HOS≤0.95; where, HOS is the distance from the object side of the first lens to the imaging plane on the optical axis; InTL is the distance from the object side of the first lens to the image side of the fourth lens on the optical axis distance on the axis.

Wherein, the lens group includes five lenses with refractive power, which are a first lens, a second lens, a third lens, a fourth lens and a fifth lens in sequence from the object side to the image side, and the The lens group satisfies the following conditions: 0.1≤InTL/HOS≤0.95; wherein, HOS is the distance from the object side of the first lens to the imaging surface on the optical axis; InTL is the distance from the object side of the first lens to the fourth lens The distance between the image side and the optical axis.

Wherein, the lens group includes six lenses with refractive power, which are a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a first lens in sequence from the object side to the image side. Six lenses, and the lens group meets the following conditions: 0.1≤InTL/HOS≤0.95; wherein, HOS is the distance from the object side of the first lens to the imaging plane on the optical axis; InTL is the object side of the first lens The distance from the image side of the fourth lens on the optical axis.

Wherein, the lens group includes seven lenses with refractive power, which are sequentially a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a first lens from the object side to the image side. Six lenses and a seventh lens, and the lens group meets the following conditions: 0.1≤InTL/HOS≤0.95; wherein, HOS is the distance from the object side of the first lens to the imaging plane on the optical axis; InTL is the distance of the second lens The distance on the optical axis from the object side of one lens to the image side of the fourth lens.

Among them, an aperture is further included, and the aperture satisfies the following formula: 0.2≤InS/HOS≤1.1; wherein, InS is the distance from the aperture to the imaging surface on the optical axis; HOS is the distance from the lens group farthest from the imaging surface The distance from the lens surface to the imaging plane on the optical axis.

Wherein, the lens base includes a lens barrel and a lens holder; the lens holder is fixed on the circuit board and has a lower through hole passing through both ends of the lens holder, so that the image sensing element S is located in the lower through hole , the lens barrel is set in the lens holder and is located in the lower through hole, the lens barrel has an upper through hole passing through both ends of the lens barrel, and the upper through hole communicates with the lower through hole to jointly form the accommodating hole; the lens bracket is fixedly arranged on the sensor bracket, and the upper through hole of the lens barrel is facing the sensing surface of the image sensing element; in addition, the lens group is arranged in the lens barrel and is located in the upper through hole , and PhiD refers to the maximum value of the minimum side length on a plane perpendicular to the optical axis of the lens group at the outer periphery of the lens holder.

Wherein, the following conditions are further satisfied: 0mm<TH1+TH2≤1.5mm; wherein, TH1 is the maximum thickness of the lens holder; TH2 is the minimum thickness of the lens barrel.

Among them, the following conditions are more satisfied: 0<(TH1+TH2)/HOI≤0.95; wherein, TH1 is the maximum thickness of the lens holder; TH2 is the minimum thickness of the lens barrel; HOI is the thickness of the imaging surface perpendicular to the optical axis Maximum imaging height.

Wherein, the outer peripheral wall of the lens barrel has an external thread, and the lens holder has an internal thread on the wall of the lower through hole screwed with the external thread, so that the lens barrel is arranged in the lens holder and fixed on the lens holder. in the lower through-hole.

Wherein, glue is arranged between the lens barrel and the lens bracket and is fixed with glue, so that the lens barrel is arranged in the lens bracket and fixed in the lower through hole.

Wherein, the lens base is made in an integral molding manner.

Wherein, an infrared filter is further included, and the infrared filter is arranged in the lens base or on the sensor bracket and is located above the image sensing element.

Wherein, it further includes an infrared filter, and the lens base includes a filter holder, the filter holder has a filter through hole through the two ends of the filter holder, and the infrared filter is set The filter holder is located in the through hole of the filter, and the filter holder is arranged on the sensor holder, so that the infrared filter is located above the image sensing element.

Wherein, the lens base includes a lens barrel and a lens holder; the lens barrel has an upper through hole passing through both ends of the lens barrel, and the lens holder has a lower through hole passing through the two ends of the lens holder, the lens barrel Set in the lens holder and located in the lower through hole; the lens holder is fixed on the filter holder, and the lower through hole communicates with the upper through hole and the filter through hole to jointly form the accommodating hole , and the upper through hole of the lens barrel is facing the sensing surface of the image sensing element; in addition, the lens group is arranged in the lens barrel and is located in the upper through hole, and PhiD refers to the outer periphery of the lens holder and is vertical The maximum value of the minimum side length on the plane of the optical axis of the lens group.

Wherein, the outer peripheral wall of the lens barrel has an external thread, and the lens holder has an internal thread on the wall of the lower through hole to be screwed with the external thread, so that the lens barrel is arranged in the lens holder and positioned at the lower through hole. In the through hole; in addition, glue is arranged between the lens holder and the filter holder and fixed with the glue, so that the lens holder is fixed on the filter holder.

Wherein, glue is arranged between the lens barrel and the lens bracket and is fixed with glue, so that the lens barrel is arranged in the lens bracket and is located in the lower through hole; in addition, the lens bracket and the optical filter Adhesive is arranged between the brackets and fixed with the adhesive, so that the lens bracket is fixed on the optical filter bracket.

Wherein, the plurality of signal conducting elements are selected from solder balls, bumps, pins or groups thereof.

Among them, it is applied to electronic portable equipment, electronic wearable device, electronic monitoring device, electronic information device, electronic communication device, machine vision device, vehicle electronic device and one of the groups formed therefrom.

The length of the profile curve on any surface of a single lens within the height of the 1/2 entrance pupil diameter (HEP) specifically affects the ability of that surface to correct for aberrations and optical path differences between rays in the field of view shared by each field of view on that surface , the longer the length of the profile curve, the better the ability to correct aberrations, but at the same time it will increase the difficulty of manufacturing. Therefore, it is necessary to control the profile of any surface of a single lens within the height range of 1/2 the entrance pupil diameter (HEP) Curve length, especially the proportional relationship between the contour curve length (ARE) within the height range of 1/2 entrance pupil diameter (HEP) of the surface and the thickness (TP) of the lens on the optical axis to which the surface belongs (ARE /TP). For example, the length of the contour curve of the 1/2 entrance pupil diameter (HEP) height on the object side of the first lens is represented by ARE11, the thickness of the first lens on the optical axis is TP1, and the ratio between the two is ARE11/TP1, the first lens The length of the contour curve of the 1/2 entrance pupil diameter (HEP) height of the mirror image side is represented by ARE12, and the ratio between it and TP1 is ARE12/TP1. The length of the contour curve of the 1/2 entrance pupil diameter (HEP) height on the object side of the second lens is represented by ARE21, the thickness of the second lens on the optical axis is TP2, and the ratio between the two is ARE21/TP2, the second lens image The length of the profile curve at the height of the side 1/2 entrance pupil diameter (HEP) is expressed as ARE22, and the ratio between it and TP2 is ARE22/TP2. The proportional relationship between the length of the profile curve of the 1/2 entrance pupil diameter (HEP) height of any surface of the other lenses in the optical imaging module and the thickness (TP) of the lens on the optical axis to which the surface belongs, expressed in the form And so on.

Description of drawings

FIG. 1A shows a schematic diagram of a first structural embodiment of the present utility model;

FIG. 1B shows a schematic diagram of a second structural embodiment of the present invention;

FIG. 1C shows a schematic diagram of a third structural embodiment of the present invention;

FIG. 1D shows a schematic diagram of a fourth structural embodiment of the present invention;

FIG. 1E shows a schematic diagram of a fifth structural embodiment of the present invention;

FIG. 1F shows a schematic diagram of a sixth structural embodiment of the present invention;

FIG. 1G shows a schematic diagram of a seventh structural embodiment of the present invention;

FIG. 2A shows a schematic diagram of the first optical embodiment of the present utility model;

2B is a graph showing the spherical aberration, astigmatism and optical distortion of the first optical embodiment of the present utility model in order from left to right;

FIG. 3A shows a schematic diagram of a second optical embodiment of the present invention;

3B is a graph showing the spherical aberration, astigmatism and optical distortion of the second optical embodiment of the present invention in order from left to right;

FIG. 4A shows a schematic diagram of a third optical embodiment of the present invention;

4B is a graph showing the spherical aberration, astigmatism and optical distortion of the third optical embodiment of the present invention in order from left to right;

FIG. 5A shows a schematic diagram of a fourth optical embodiment of the present invention;

FIG. 5B is a graph showing the spherical aberration, astigmatism and optical distortion of the fourth optical embodiment of the present invention in order from left to right;

FIG. 6A is a schematic diagram of a fifth optical embodiment of the present invention;

6B is a graph showing the spherical aberration, astigmatism and optical distortion of the fifth optical embodiment of the present invention in order from left to right;

FIG. 7A shows a schematic diagram of a sixth optical embodiment of the present invention;

7B is a graph showing the spherical aberration, astigmatism and optical distortion of the sixth optical embodiment of the present invention in order from left to right;

FIG. 8A is a schematic diagram of the optical imaging module of the present invention used in a mobile communication device;

FIG. 8B is a schematic diagram of the optical imaging module of the present invention used in a mobile information device;

FIG. 8C is a schematic diagram of the optical imaging module of the present invention used in a smart watch;

FIG. 8D is a schematic diagram of the optical imaging module of the present invention used in a smart head-mounted device;

FIG. 8E is a schematic diagram of the optical imaging module of the present invention used in a security monitoring device;

FIG. 8F is a schematic diagram of the optical imaging module of the present invention used in a vehicle imaging device.

8G is a schematic diagram of the optical imaging module of the present invention used in an unmanned aircraft device;

FIG. 8H is a schematic diagram of the optical imaging module of the present invention used in an extreme sports imaging device.

Explanation of reference numerals: optical imaging modules: 10, 20, 30, 40, 50, 60, 712, 722, 732, 742, 752, 762

Aperture: 100, 200, 300, 400, 500, 600

First lens: 110, 210, 310, 410, 510, 610

Object side: 112, 212, 312, 412, 512, 612

Like side: 114, 214, 314, 414, 514, 614

Second lens: 120, 220, 320, 420, 520, 620

Object side: 122, 222, 322, 422, 522, 622

Like side: 124, 224, 324, 424, 524, 624

Third lens: 130, 230, 330, 430, 530, 630

Object side: 132, 232, 332, 432, 532, 632

Like side: 134, 234, 334, 434, 534, 634

Fourth lens: 140, 240, 340, 440, 540

Object side: 142, 242, 342, 442, 542

Like side: 144, 244, 344, 444, 544

Fifth lens: 150, 250, 350, 450

Object side: 152, 252, 352, 452

Like side: 154, 254, 354, 454

Sixth lens: 160, 260, 360

Object side: 162, 262, 362

Image side: 164, 264, 364

Seventh lens: 270

Object side: 272

Image side: 274

Infrared filter: 180, 280, 380, 480, 580, 680

Image sensing element S, 192, 292, 392, 492, 590, 690

Circuit board EB

Circuit contact EP

first surface S1

Second surface S2

Video Contact IP

Signal transduction element SC1

Lens group L

Lens bases LB1, LB3, LB4, LB7

Lens holders LH1, LH2, LH4, LH5

Lens barrel B1, B2, B4, B5

Filter Holder IRH4

Filter through hole IH

Infrared filters IR1, IR2, IR3, IR4, IR7

External thread OT2, OT5

Internal thread IT2, IT5

Lower through holes DH1, DH2, DH4, DH5

Upper through holes UH1, UH4

Sensor bracket SB

Detailed ways

The main design content of the optical imaging module includes structural implementation design and optical implementation design. The following will first explain the relevant content of the structural embodiment:

Please refer to FIG. 1A , the optical imaging module of the first preferred structural embodiment of the present invention mainly includes a circuit element and a lens element. The circuit element includes an image sensing element S, a sensor bracket SB and a circuit substrate EB, the outer peripheral edge of the image sensing element S and the maximum value of the minimum side length on a plane perpendicular to the optical axis is LS, and the In this embodiment, the image sensing element S is fixed on the circuit substrate EB in a CSP (Chip Scale Package) package, and the sensor bracket SB is arranged on the circuit substrate EB; more specifically, the circuit substrate EB has A plurality of circuit contacts EP, the image sensing element has a first surface S1 and a second surface S2, the first surface S1 faces the circuit substrate EB, and the first surface S1 has a plurality of image contacts IP, the plurality of image contacts A signal conducting element SC1 is respectively provided on the IP, and the plurality of signal conducting elements SC1 are respectively connected to the plurality of circuit contacts EP on the circuit board EB, so that the plurality of image contacts IP pass through the plurality of signal conducting elements SC1 The corresponding circuit contacts EP are electrically connected; and the second surface S2 has a sensing surface. Wherein, the plurality of signal conducting elements SC1 can be made from solder balls, bumps, pins or groups thereof, and in this embodiment, each of the signal conducting elements SC1 is a solder ball. In this way, when the sensing surface of the image sensing element S detects the image light signal and converts it into an electrical signal, the electrical signal can be output to the circuit through the plurality of image contacts IP and the plurality of signal conducting elements SC1 The contact EP enables the circuit substrate EB to conduct the electrical signal to other external components for subsequent processing. In addition, the image sensing element S and the plurality of signal conducting elements SC1 are surrounded by the sensor bracket SB.

The lens element includes a lens base LB1, a lens group L and an infrared filter IR1. In this embodiment, the lens base LB1 is made of plastic material without light transmission, and has an accommodating hole running through both ends of the lens base LB1 so that the lens base LB1 is hollow; in addition, the lens The base LB1 is disposed on the sensor bracket SB such that the accommodating hole faces the image sensor S. The lens base LB1 includes a lens holder LH1 and a lens barrel B1. More specifically, the lens holder LH1 has a predetermined wall thickness TH1, and the maximum value of the minimum side length on the outer periphery of the lens holder LH1 on a plane perpendicular to the optical axis is represented by PhiD. In addition, the lens holder LH1 has a lower through hole DH1 passing through both ends of the lens holder LH1 and is hollow, and the lens holder LH1 is fixed on the sensor holder SB so that the image sensing element S is located in the lower through hole DH1 middle. The lens barrel B1 has a predetermined wall thickness TH2 and its outer periphery has a maximum diameter of PhiC on a plane perpendicular to the optical axis. In addition, the lens barrel B1 is arranged in the lens holder LH1 and is located in the lower through hole DH1, and the lens barrel B1 has an upper through hole UH1 passing through both ends of the lens barrel B1, so that the upper through hole UH1 is connected to the lower through hole DH1. The lower through hole DH1 communicates to form an accommodating hole together, and the upper through hole UH1 of the lens barrel is facing the sensing surface of the image sensing element S. As shown in FIG. Further, in this embodiment, glue is provided between the lens barrel B1 and the lens holder LH1 and fixed with glue, so that the lens barrel B1 is set in the lens holder LH1 and fixed on the lower inside via hole DH1.

The lens group L includes at least two lenses with refractive power, and its detailed optical design will be described later. The lens group L is disposed on the lens barrel B1 of the lens base LB1 and located in the upper through hole UH1. In addition, the imaging surface of the lens group L is located on the sensing surface of the image sensing element S, and the optical axis of the lens group L overlaps with the central normal of the sensing surface, so that light can pass through the accommodating hole The lens group L is projected onto the sensing surface of the image sensing element S. In addition, the maximum diameter of the image side of the lens closest to the imaging surface of the lens group L is represented by PhiB, and the maximum effective diameter of the lens image side of the lens group L closest to the imaging surface (ie image space) (also known as is the optical exit pupil) is represented by PhiA.

The infrared filter IR1 can be arranged in the lens barrel B1, in the lens holder LH1 or on the sensor holder SB above the image sensing element S. In this embodiment, the infrared filter IR1 is fixed The lens holder LH1 on the lens base LB1 is located between the lens group L and the image sensor S, so as to filter redundant infrared rays in the image light passing through the lens group L to improve the imaging quality.

It is worth mentioning that, in order to achieve the effect that the optical axis of the lens group L overlaps with the central normal of the sensing surface of the image sensing element S, the optical imaging module of this embodiment is designed so that the outside of the lens barrel B1 does not Fully contact the inner periphery of the lens holder LH1 and leave a little space, so it can allow the curable glue to be coated between the lens holder LH1 and the lens barrel B1, and at the same time adjust the optical axis of the lens group L and the image sensor The center normals of the components S overlap, and then the curable glue is cured to fix the lens barrel B1 on the lens holder LH1, that is, the so-called active alignment (active alignment) assembly is performed, and the more sophisticated optical imaging module or All special applications (such as the assembly of multiple lenses) require the use of active alignment technology, and the optical imaging module of the present invention can meet this requirement.

In order to achieve miniaturization and high optical quality, the PhiA of this embodiment satisfies the following conditions: 0 mm<PhiA≤17.4mm, preferably the following conditions: 0mm<PhiA≤13.5mm; PhiC satisfies the following conditions: 0mm< PhiC≤17.7mm, preferably satisfy the following conditions: 0mm<PhiC≤14mm; PhiD satisfy the following conditions: 0mm<PhiD≤18mm, preferably satisfy the following conditions: 0mm<PhiD≤15mm; TH1 satisfy the following conditions: 0mm <TH1≤5mm, preferably satisfy the following conditions: 0mm<≤TH1≤0.5mm; TH2 satisfy the following conditions: 0mm<TH2≤5mm, preferably satisfy the following conditions: 0mm<TH2≤0.5mm; PhiA/PhiD Satisfy the following conditions: 0 <PhiA/PhiD≤0.99, preferably satisfy the following conditions: 0<PhiA/PhiD≤0.97; TH1+TH2 satisfy the following conditions: 0mm<TH1+TH2≤1.5mm, preferably satisfy the following conditions Conditions: 0 mm<TH1+TH2≤1mm; 2 times (TH1+TH2)/PhiA meets the following conditions: 0<2 times (TH1+TH2) /PhiA≤0.95, preferably the following conditions: 0<2 times (TH1+TH2)/PhiA≤0.5.

In addition to the structure of the above-mentioned optical imaging module, please refer to Figure 1B to Figure 1G, which are the optical imaging modules of the second preferred structural embodiment to the seventh preferred structural embodiment of the present utility model, and their structural design is similar to that of the first preferred structure The optical imaging module of the embodiment has certain differences, but can also achieve the effects of miniaturization and high optical quality.

Please refer to Fig. 1B, it is the optical imaging module of the second preferred structural embodiment of the present utility model, and the similarities with the first preferred structural embodiment will not be repeated, but the difference is that the outer peripheral wall of the lens barrel B2 has The external thread OT2, and the lens holder LH2 has an internal thread IT2 on the wall of the lower through hole DH2, which is screwed with the external thread OT2, so as to achieve the effect of fixing the lens barrel B2 in the lens holder LH2. In addition, the infrared filter IR2 is modified and fixed in the lens barrel B2 to achieve the purpose of filtering out infrared rays. In addition, the optical imaging module of the second preferred structural embodiment of the present invention also satisfies the conditional expression described in the first structural embodiment, and can also achieve the effects of miniaturization and high optical quality.

Please refer to Fig. 1C, which is the optical imaging module of the third preferred structural embodiment of the present invention, and the similarities with the first preferred structural embodiment will not be repeated, but the difference is that the lens base LB3 is integrally formed Instead of being divided into lens barrels and lens holders, it can achieve the effect of reducing the working time of parts manufacturing and assembly. In addition, the maximum value of the minimum side length on the plane perpendicular to the optical axis at the outer peripheral edge of this lens base LB3 is represented by PhiD. In addition, the infrared filter IR3 can be disposed in the lens base LB3 or on the sensor bracket SB above the image sensing element S, and in this embodiment, the infrared filter IR3 is disposed on the lens base LB3 middle.

In addition, the optical imaging module of this embodiment also meets the following conditions: PhiA satisfies the following conditions: 0mm<PhiA≤17.4mm, preferably satisfies the following conditions: 0mm<PhiA≤13.5mm; PhiD satisfies the following conditions: 0mm<PhiD≤ 18mm, preferably meeting the following conditions: 0mm<PhiD≤15mm; PhiA/PhiD meeting the following conditions: 0<PhiA/PhiD≤0.99, preferably meeting the following conditions: 0<PhiA/PhiD≤0.97; TH1+TH2 Satisfy the following conditions: 0mm<TH1+TH2≤15mm, preferably meet the following conditions: 0mm<TH1+TH2≤1mm; 2 times (TH1+TH2) /PhiA meet the following conditions: 0<2 times (TH1+TH2) /PhiA≤0.95, preferably satisfying the following condition: 0<2 times (TH1+TH2)/PhiA≤0.5. From the above, it can be seen that the optical imaging module of the third preferred structural embodiment of the present invention satisfies some of the conditional expressions described in the first structural embodiment, and can also achieve the effects of miniaturization and high imaging quality.

Please refer to Fig. 1D, which is the optical imaging module of the fourth preferred structural embodiment of the present utility model. film holder IRH4, a lens holder LH4 and a lens barrel B4. The filter holder IRH4 has a filter through hole IH that runs through the two ends of the filter holder IRH4, and the filter holder IRH4 is arranged on the sensor holder SB, and the infrared filter IR4 is arranged on the filter The bracket IRH4 is located in the filter hole IH, so that the infrared filter IR4 is located above the image sensor S. The lens holder LH4 is then fixed on the filter holder IRH4 and the lens barrel B4 is also arranged in the lens holder LH4 and is positioned in the lower through hole DH4, so that the upper through hole UH4 of the lens barrel B4, the lens holder The lower through hole DH4 of the LH4 and the filter through hole IH of the filter holder IRH4 communicate with each other to form a receiving hole together, and the upper through hole UH4 of the lens barrel B4 faces the sensing surface of the image sensor S. In this embodiment, glue is provided between the lens barrel B4 and the lens holder LH4 and fixed with glue, so that the lens barrel B4 is set in the lens holder LH4 and located in the lower through hole DH4 ; Adhesive is provided between the lens holder LH4 and the filter holder IRH4 and fixed with the adhesive, so that the lens holder LH4 is fixed on the filter holder IRH4. In addition, the optical imaging module of the fourth preferred structural embodiment of the present invention also satisfies the conditional formula described in the first structural embodiment, and can also be fixed by glue for active alignment assembly, and then can also The effect of miniaturization and high optical quality is achieved.

Please refer to Fig. 1E, it is the optical imaging module of the fifth preferred structural embodiment of the present utility model, and the similarities with the fourth preferred structural embodiment will not be repeated, but the difference is that there is a The external thread OT5, and the lens holder LH5 has an internal thread IT5 on the wall of the lower through hole DH5, which is screwed with the external thread OT5, so that the lens barrel B5 is arranged in the lens holder LH5 and fixed in the lower through hole Effects within DH5. In addition, the optical imaging module of the fifth preferred structural embodiment of the present invention also satisfies the conditional expression described in the first structural embodiment, and can also achieve the effects of miniaturization and high optical quality.

Please refer to Fig. 1F, which is the optical imaging module of the sixth preferred structural embodiment of the present invention, and the similarities with the first preferred structural embodiment will not be repeated, but the difference is that the infrared filter IR6 is arranged on The sensor bracket SB is located above the image sensor S. In addition, the optical imaging module of the sixth preferred structural embodiment of the present invention also satisfies the conditional formula described in the first structural embodiment, and can also achieve the effects of miniaturization and high optical quality.

Please refer to Fig. 1G, which is the optical imaging module of the seventh preferred structural embodiment of the present utility model. The similarities with the first and sixth preferred structural embodiments will not be described again. The difference is that the lens base LB7 is integrated Made by molding. In addition, the optical imaging module of the seventh preferred structural embodiment of the present invention also satisfies the conditional expression described in the first structural embodiment, and can also achieve the effects of miniaturization and high optical quality.

In addition, in addition to the above-mentioned structural embodiments, the feasible optical embodiments of the lens group L are described below. The optical imaging module of the present invention can be designed using three working wavelengths, namely 486.1nm, 587.5nm, and 656.2nm, among which 587.5nm is the main reference wavelength for extracting technical features. The optical imaging module can also be designed with five working wavelengths, which are 470nm, 510nm, 555nm, 610nm, and 650nm, among which 555nm is the main reference wavelength for extracting technical features.

The ratio of the focal length f of the optical imaging module to the focal length fp of each lens with positive refractive power is PPR, the ratio of the focal length f of the optical imaging module to the focal length fn of each lens with negative refractive power is NPR, and all lenses with positive refractive power The sum of PPR of powerful lenses is ΣPPR, and the sum of NPR of all lenses with negative refractive power is ΣNPR, which helps to control the total refractive power and total length of the optical imaging module when the following conditions are met: 0.5≤ΣPPR/│ΣNPR│≤ 15. Preferably, the following conditions can be met: 1≤ΣPPR/│ΣNPR│≤3.0.

The optical imaging module may further include an image sensing element disposed on the imaging surface. Half of the diagonal length of the effective sensing area of the image sensing element (that is, the imaging height of the optical imaging module or the maximum image height) is HOI, and the distance from the object side of the first lens to the imaging surface on the optical axis is HOS, which The following conditions are satisfied: HOS/HOI≦50; and 0.5≦HOS/f≦150. Preferably, the following conditions may be satisfied: 1≤HOS/HOI≤40; and 1≤HOS/f≤140. In this way, the miniaturization of the optical imaging module can be maintained so that it can be mounted on thin and portable electronic products.

In addition, in the optical imaging module provided by the present invention, at least one aperture can be set as required to reduce stray light and improve image quality.

In the optical imaging module provided by the utility model, the aperture configuration can be a front aperture or a middle aperture, wherein the front aperture means that the aperture is set between the subject and the first lens, and the middle aperture means that the aperture is set on the first lens. Between the lens and the imaging surface. If the aperture is a front aperture, the exit pupil of the optical imaging module and the imaging surface can have a longer distance to accommodate more optical elements, and can increase the efficiency of the image sensing element to receive images; if it is a central aperture, there is It helps to expand the field of view of the system, so that the optical imaging module has the advantage of a wide-angle lens. The distance between the aforementioned aperture and the imaging surface is InS, which satisfies the following condition: 0.1≤InS/HOS≤1.1. In this way, the miniaturization of the optical imaging module and the wide-angle characteristic can be maintained at the same time.

In the optical imaging module provided by the utility model, the distance between the object side of the first lens and the image side of the sixth lens is InTL, and the thickness sum of all lenses with refractive power on the optical axis is ΣTP, thereby, when it satisfies the following Condition: 0.1≤ΣTP/InTL≤0.9, which can take into account the contrast of system imaging and the pass rate of lens manufacturing at the same time, and provide an appropriate back focus to accommodate other components. In addition, if it satisfies the following condition: 0.1≤InTL/HOS≤0.95, the miniaturization of the optical imaging module can be maintained so that it can be mounted on thin, light and portable electronic products.

The longest operating wavelength of visible light of the positive meridian plane light fan of the optical imaging module passes through the edge of the entrance pupil and is incident on the imaging surface at 0.7HOI. The lateral aberration is represented by PLTA; The lateral aberration of the fan with the shortest operating wavelength of visible light passing through the edge of the entrance pupil and incident on the imaging surface at 0.7HOI is represented by PSTA. The longest operating wavelength of visible light of the negative meridian plane light fan of the optical imaging module passes through the edge of the entrance pupil and is incident on the imaging surface at 0.7HOI. The lateral aberration is represented by NLTA; The shortest operating wavelength of visible light of the fan passes through the edge of the entrance pupil and the lateral aberration at 0.7HOI on the imaging surface is represented by NSTA; the longest operating wavelength of visible light of the sagittal plane light fan of the optical imaging module passes through the edge of the entrance pupil and The lateral aberration incident at 0.7HOI on the imaging plane is represented by SLTA; the shortest operating wavelength of visible light of the sagittal light fan of the optical imaging module passes through the edge of the entrance pupil and is incident on the imaging plane at 0.7HOI. Expressed in SSTA. In addition, when it meets the following conditions: PLTA≤100 μm; PSTA≤100 μm; NLTA≤100 μm; NSTA≤100 μm; SLTA≤100 μm; SSTA≤100 μm, it has a better imaging effect.

The curvature radius of the object side of the first lens is R1, and the curvature radius of the image side of the first lens is R2, which satisfy the following conditions: 0.001≤│R1/R2│≤25. In this way, the first lens has an appropriate positive refractive power strength to avoid excessive increase in spherical aberration. Preferably, the following condition can be satisfied: 0.01≦│R1/R2│<12.

The radius of curvature of the object side of the sixth lens is R11, and the radius of curvature of the image side of the sixth lens is R12, which satisfy the following condition: -7<(R11-R12)/(R11+R12)<50. Thereby, it is beneficial to correct the astigmatism generated by the optical imaging module.

The distance between the first lens and the second lens on the optical axis is IN12, which satisfies the following condition: IN12 /f≦60, thereby improving the chromatic aberration of the lens and improving its performance.

The distance between the fifth lens and the sixth lens on the optical axis is IN56, which satisfies the following condition: IN56 /f≤3.0, which helps to improve the chromatic aberration of the lens and improve its performance.

The thicknesses of the first lens and the second lens on the optical axis are respectively TP1 and TP2, which satisfy the following condition: 0.1≦(TP1+IN12)/TP2≦10. In this way, it is helpful to control the sensitivity of optical imaging module manufacturing and improve its performance.

The thicknesses of the fifth lens and the sixth lens on the optical axis are TP5 and TP6 respectively, and the distance between the aforementioned two lenses on the optical axis is IN56, which satisfies the following conditions: 0.1≤(TP6+IN56)/TP5≤15 , helps to control the sensitivity of optical imaging module manufacturing and reduce the overall system height.

The thicknesses of the second lens, the third lens and the fourth lens on the optical axis are TP2, TP3 and TP4 respectively, the distance between the second lens and the third lens on the optical axis is IN23, the third lens and the fourth lens are at The distance on the optical axis is IN45, and the distance between the object side of the first lens and the image side of the sixth lens is InTL, which satisfies the following condition: 0.1≤TP4/(IN34+TP4+IN45)<1. In this way, it is helpful to slightly correct the aberration generated by the incident light traveling process layer by layer and reduce the overall height of the system.

In the optical imaging module provided by the utility model, the vertical distance between the critical point C61 on the object side of the sixth lens and the optical axis is HVT61, the vertical distance between the critical point C62 on the image side of the sixth lens and the optical axis is HVT62, and the sixth lens object The horizontal displacement distance from the intersection point of the side surface on the optical axis to the critical point C61 on the optical axis is SGC61, and the horizontal displacement distance from the intersection point of the sixth lens image on the optical axis to the critical point C62 on the optical axis is SGC62, which can meet The following conditions: 0mm≤HVT61≤3mm; 0mm< HVT62≤6mm; 0≤HVT61/HVT62; 0mm≤│SGC61│≤0.5mm; 0mm<│SGC62│≤2mm; and 0<│SGC62│/(│SGC62│+ TP6) ≤ 0.9. Thereby, the aberration of the off-axis field of view can be effectively corrected.

The optical imaging module provided by the utility model satisfies the following conditions: 0.2≤HVT62/HOI≤0.9. Preferably, the following condition can be satisfied: 0.3≦HVT62/HOI≦0.8. Thereby, the aberration correction of the peripheral field of view of the optical imaging module is facilitated.

The optical imaging module provided by the utility model satisfies the following conditions: 0≤HVT62/HOS≤0.5. Preferably, the following condition can be satisfied: 0.2≦HVT62/HOS≦0.45. Thereby, the aberration correction of the peripheral field of view of the optical imaging module is facilitated.

In the optical imaging module provided by the utility model, the horizontal displacement distance parallel to the optical axis between the intersection point of the object side of the sixth lens on the optical axis and the inflection point of the nearest optical axis on the object side of the sixth lens is represented by SGI611, the sixth The horizontal displacement distance parallel to the optical axis between the intersection point of the lens image side on the optical axis and the inflection point of the sixth lens image side closest to the optical axis is expressed in SGI621, which meets the following conditions: 0<SGI611 /(SGI611+TP6) ≤0.9; 0<SGI621/(SGI621+TP6)≤0.9. Preferably, the following conditions can be satisfied: 0.1≤SGI611/(SGI611+TP6)≤0.6; 0.1≤SGI621/(SGI621+TP6)≤0.6.

The horizontal displacement distance parallel to the optical axis between the intersection point of the object side of the sixth lens on the optical axis and the second inflection point close to the optical axis of the object side of the sixth lens is represented by SGI612. The horizontal displacement distance parallel to the optical axis between the intersection point and the second inflection point close to the optical axis on the image side of the sixth lens is expressed in SGI622, which meets the following conditions: 0<SGI612/(SGI612+TP6)≤0.9; 0<SGI622 /(SGI622+TP6)≤0.9. Preferably, the following conditions can be met: 0.1≤SGI612/(SGI612+TP6)≤0.6; 0.1≤SGI622/(SGI622+TP6)≤0.6.

The vertical distance between the inflection point of the nearest optical axis on the object side of the sixth lens and the optical axis is represented by HIF611, the intersection point of the image side of the sixth lens on the optical axis to the inflection point of the nearest optical axis on the image side of the sixth lens and the optical axis The vertical distance between is represented by HIF621, which satisfies the following conditions: 0.001mm≤│HIF611│≤5 mm; 0.001mm≤│HIF621│≤5mm. Preferably, the following conditions can be met: 0.1mm≤│HIF611│≤3.5mm; 1.5mm≤│HIF621│≤3.5mm.

The vertical distance between the second inflection point on the object side of the sixth lens close to the optical axis and the optical axis is represented by HIF612, and the inflection point from the intersection of the image side of the sixth lens on the optical axis to the second close to the optical axis of the image side of the sixth lens The vertical distance between the point and the optical axis is represented by HIF622, which satisfies the following conditions: 0.001mm≤│HIF612│≤5mm; 0.001mm≤│HIF622│≤5mm. Preferably, the following conditions can be met: 0.1mm≤│HIF622│≤3.5mm; 0.1mm≤│HIF612│≤3.5mm.

The vertical distance between the third inflection point on the object side of the sixth lens and the optical axis close to the optical axis is represented by HIF613. The vertical distance between the point and the optical axis is represented by HIF623, which satisfies the following conditions: 0.001mm≤│HIF613│≤5mm; 0.001mm≤│HIF623│≤5mm. Preferably, the following conditions can be met: 0.1mm≤│HIF623│≤3.5mm; 0.1mm≤│HIF613│≤3.5mm.

The vertical distance between the inflection point on the object side of the sixth lens that is the fourth closest to the optical axis and the optical axis is represented by HIF614, and the inflection point from the intersection point of the image side of the sixth lens on the optical axis to the fourth lens on the image side of the sixth lens that is closest to the optical axis The vertical distance between the point and the optical axis is represented by HIF624, which meets the following conditions: 0.001mm≤│HIF614│≤5mm; 0.001mm≤│HIF624│≤5mm. Preferably, the following conditions can be met: 0.1mm≤│HIF624│≤3.5mm; 0.1mm≤│HIF614│≤3.5mm.

In the optical imaging module provided by the utility model, (TH1+TH2)/HOI satisfies the following conditions: 0<(TH1+TH2)/HOI≤0.95, preferably the following conditions can be satisfied: 0<(TH1+TH2)/HOI ≤0.5; (TH1+TH2)/HOS satisfies the following conditions: 0<(TH1+TH2)/HOS≤0.95, preferably satisfies the following conditions: 0<(TH1+TH2)/HOS≤0.5; 2 times (TH1 +TH2)/PhiA satisfies the following condition: 0<2 times (TH1+TH2)/PhiA≤0.95, preferably satisfies the following condition: 0<2 times (TH1+TH2)/PhiA≤0.5.

An embodiment of the optical imaging module provided by the utility model can help correct the chromatic aberration of the optical imaging module by interlacing the lenses with high dispersion coefficient and low dispersion coefficient.

The equation for the above aspheric surface is:

z=ch2/[1+[1(k+1)c2h2]0.5]+A4h4+A6h6+A8h8+A10h10+A12h12+A14h14+A16h16+A18h18+A20h20+…(1)

Among them, z is the position value at the position of height h along the optical axis with the surface vertex as a reference, k is the cone coefficient, c is the reciprocal of the radius of curvature, and A4, A6, A8, A10, A12, A14, A16 , A18 and A20 are high-order aspheric coefficients.

In the optical imaging module provided by the utility model, the material of the lens can be plastic or glass. When the lens is made of plastic, the production cost and weight can be effectively reduced. In addition, when the material of the lens is glass, the thermal effect can be controlled and the design space for the refractive power configuration of the optical imaging module can be increased. In addition, the object side and the image side of the first lens to the seventh lens in the optical imaging module can be aspherical, which can obtain more control variables. In addition to reducing aberrations, compared with the use of traditional glass lenses, even The number of lenses used can be reduced, so the total height of the optical imaging module of the present invention can be effectively reduced.

In addition, in the optical imaging module provided by the present invention, if the lens surface is convex, it means that the lens surface is convex at the near optical axis in principle; if the lens surface is concave, it means that the lens surface is concave at the near optical axis in principle.

The optical imaging module provided by the utility model can be applied to the optical system of moving focusing according to the requirements, and has the characteristics of excellent aberration correction and good imaging quality, thereby expanding the application level.

The optical imaging module provided by the utility model may further include a driving module according to requirements, and the driving module may be coupled with the plurality of lenses and cause displacement of the plurality of lenses. The aforementioned drive module can be a voice coil motor (VCM), used to drive the lens to focus, or an optical anti-shake element (OIS), used to reduce the frequency of out-of-focus caused by lens vibration during shooting.

The optical imaging module provided by the utility model can further make at least one of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens be a light with a wavelength of less than 500nm according to the requirements. The filtering element can be realized by coating on at least one surface of the specific lens with filtering function or the lens itself is made of a material capable of filtering out short wavelengths.

The imaging surface of the optical imaging module provided by the utility model can be selected as a plane or a curved surface according to the requirements. When the imaging surface is a curved surface (such as a spherical surface with a radius of curvature), it helps to reduce the incident angle required for the focused light on the imaging surface. In addition to helping to achieve the length (TTL) of the miniaturized optical imaging module, it is also helpful for improving Relative illumination also helps.

According to the above-mentioned implementation manners, specific embodiments are proposed below using the first preferred structural embodiment together with the following optical embodiments and described in detail with reference to the drawings. However, in practice, the following optical embodiments can also be applied to other structural embodiments.

First optical embodiment

Please refer to FIG. 2A and FIG. 2B, wherein FIG. 2A shows a schematic diagram of a lens group of an optical imaging module according to the first optical embodiment of the present invention, and FIG. 2B shows the optical imaging of the first optical embodiment in sequence from left to right Curves of spherical aberration, astigmatism and optical distortion of the module. It can be seen from FIG. 2A that the optical imaging module includes a first lens 110, an aperture 100, a second lens 120, a third lens 130, a fourth lens 140, a fifth lens 150, a sixth lens 160, An infrared filter 180 , an imaging surface 190 and an image sensor 192 .

The first lens 110 has negative refractive power and is made of plastic material. The object side 112 is concave, and the image side 114 is concave, both of which are aspherical. The object side 112 has two inflection points. The length of the contour curve of the maximum effective radius on the object side of the first lens is represented by ARS11 , and the length of the contour curve of the maximum effective radius on the image side of the first lens is represented by ARS12 . The contour curve length of 1/2 entrance pupil diameter (HEP) on the object side of the first lens is represented by ARE11, and the contour curve length of 1/2 entrance pupil diameter (HEP) on the image side of the first lens is represented by ARE12. The thickness of the first lens on the optical axis is TP1.

The horizontal displacement distance parallel to the optical axis between the intersection point of the object side 112 of the first lens 110 on the optical axis and the inflection point of the closest optical axis of the object side 112 of the first lens 110 is represented by SGI111, and the image side 114 of the first lens 110 is at The horizontal displacement distance parallel to the optical axis between the intersection point on the optical axis and the inflection point of the nearest optical axis of the first lens 110 image side 114 is represented by SGI121, which satisfies the following conditions: SGI111=-0.0031mm; │SGI111│/( │SGI111│+TP1)=0.0016.

The horizontal displacement distance parallel to the optical axis between the intersection point of the first lens 110 object side 112 on the optical axis to the second inflection point of the first lens 110 object side 112 close to the optical axis is represented by SGI112, and the image side of the first lens 110 The horizontal displacement distance parallel to the optical axis between the intersection point of 114 on the optical axis and the second inflection point close to the optical axis of the image side 114 of the first lens 110 is represented by SGI122, which satisfies the following conditions: SGI112=1.3178mm; │SGI112 │/(│SGI112│+TP1)=0.4052.

The vertical distance between the inflection point of the nearest optical axis of the object side 112 of the first lens 110 and the optical axis is represented by HIF111, and the intersection point of the first lens 110 image side 114 on the optical axis to the first lens 110 image side 114 of the nearest optical axis The vertical distance between the inflection point and the optical axis is represented by HIF121, which satisfies the following conditions: HIF111=0.5557mm; HIF111/HOI=0.1111.

The vertical distance between the inflection point of the first lens 110 object side 112 second near the optical axis and the optical axis is represented by HIF112, and the intersection point of the first lens 110 image side 114 on the optical axis to the first lens 110 image side 114 second The vertical distance between the inflection point close to the optical axis and the optical axis is represented by HIF122, which satisfies the following conditions: HIF112=5.3732mm; HIF112/HOI=1.0746.

The second lens 120 has positive refractive power and is made of plastic material. The object side 122 is convex, and the image side 124 is convex, both of which are aspherical. The object side 122 has an inflection point. The length of the contour curve of the maximum effective radius on the object side of the second lens is represented by ARS21, and the length of the contour curve of the maximum effective radius on the image side of the second lens is represented by ARS22. The contour curve length of 1/2 entrance pupil diameter (HEP) on the object side of the second lens is represented by ARE21, and the contour curve length of 1/2 entrance pupil diameter (HEP) on the image side of the second lens is represented by ARE22. The thickness of the second lens on the optical axis is TP2.

The horizontal displacement distance parallel to the optical axis between the intersection point of the object side 122 of the second lens 120 on the optical axis to the inflection point of the closest optical axis of the object side 122 of the second lens 120 is represented by SGI211, and the image side 124 of the second lens 120 is at The horizontal displacement distance parallel to the optical axis between the intersection point on the optical axis and the inflection point of the second lens 120 image side 124 closest to the optical axis is represented by SGI221, which meets the following conditions: SGI211=0.1069mm; │SGI211│/(│ SGI211│+TP2)=0.0412; SGI221=0mm;│SGI221│/(│SGI221│+TP2)=0.

The vertical distance between the inflection point and the optical axis of the object side 122 of the second lens 120 object side 122 is represented by HIF211. The vertical distance between the inflection point and the optical axis is represented by HIF221, which satisfies the following conditions: HIF211=1.1264mm; HIF211/HOI=0.2253; HIF221=0mm; HIF221/HOI=0.

The third lens 130 has negative refractive power and is made of plastic material. The object side 132 is concave, and the image side 134 is convex, both of which are aspherical. Both the object side 132 and the image side 134 have an inflection point. The length of the contour curve of the maximum effective radius on the object side of the third lens is represented by ARS31, and the length of the contour curve of the maximum effective radius on the image side of the third lens is represented by ARS32. The contour curve length of 1/2 entrance pupil diameter (HEP) on the object side of the third lens is represented by ARE31, and the contour curve length of 1/2 entrance pupil diameter (HEP) on the image side of the third lens is represented by ARE32. The thickness of the third lens on the optical axis is TP3.

The horizontal displacement distance parallel to the optical axis between the intersection point of the object side 132 of the third lens 130 on the optical axis and the inflection point of the closest optical axis of the object side 132 of the third lens 130 is represented by SGI311, and the image side 134 of the third lens 130 is at The horizontal displacement distance parallel to the optical axis between the intersection point on the optical axis and the inflection point of the third lens 130 image side 134 nearest optical axis is represented by SGI321, which meets the following conditions: SGI311=-0.3041mm; │SGI311│/( │SGI311│+TP3)＝0.4445; SGI321＝-0.1172mm; │SGI321│/(│SGI321│+TP3)＝0.2357.

The vertical distance between the inflection point and the optical axis of the object side 132 of the third lens 130 object side 132 is represented by HIF311. The vertical distance between the inflection point and the optical axis is represented by HIF321, which satisfies the following conditions: HIF311=1.5907mm; HIF311/HOI=0.3181; HIF321=1.3380mm; HIF321/HOI=0.2676.

The fourth lens 140 has positive refractive power and is made of plastic material. Its object side 142 is a convex surface, its image side 144 is concave, and both are aspherical, and its object side 142 has two inflection points and the image side 144 has a One inflection point. The length of the contour curve of the maximum effective radius on the object side of the fourth lens is represented by ARS41, and the length of the contour curve of the maximum effective radius on the image side of the fourth lens is represented by ARS42. The profile curve length of 1/2 entrance pupil diameter (HEP) on the object side of the fourth lens is represented by ARE41, and the profile curve length of 1/2 entrance pupil diameter (HEP) on the image side of the fourth lens is represented by ARE42. The thickness of the fourth lens on the optical axis is TP4.

The horizontal displacement distance parallel to the optical axis between the intersection point of the object side 142 of the fourth lens 140 on the optical axis and the inflection point of the nearest optical axis of the object side 142 of the fourth lens 140 is represented by SGI411. The image side 144 of the fourth lens 140 is at The horizontal displacement distance parallel to the optical axis between the intersection point on the optical axis and the inflection point of the nearest optical axis on the image side 144 of the fourth lens 140 is represented by SGI421, which satisfies the following conditions: SGI411=0.0070mm; │SGI411│/(│ SGI411│+TP4)=0.0056; SGI421=0.0006 mm;│SGI421│/(│SGI421│+TP4)=0.0005.

The horizontal displacement distance parallel to the optical axis between the intersection point of the object side 142 of the fourth lens 140 on the optical axis and the second inflection point close to the optical axis of the object side 142 of the fourth lens 140 is represented by SGI412, and the image side of the fourth lens 140 The horizontal displacement distance parallel to the optical axis between the intersection point of 144 on the optical axis and the second inflection point of the image side 144 of the fourth lens 140 close to the optical axis is represented by SGI422, which satisfies the following conditions: SGI412=-0.2078mm; │ SGI412│/(│SGI412│+TP4)=0.1439.

The vertical distance between the inflection point of the nearest optical axis of the object side 142 of the fourth lens 140 and the optical axis is represented by HIF411, and the intersection point of the fourth lens 140 image side 144 on the optical axis to the distance between the fourth lens 140 image side 144 nearest optical axis The vertical distance between the inflection point and the optical axis is represented by HIF421, which satisfies the following conditions: HIF411=0.4706mm; HIF411/HOI=0.0941; HIF421=0.1721mm; HIF421/HOI=0.0344.

The vertical distance between the inflection point of the fourth lens 140 object side 142 second near the optical axis and the optical axis is represented by HIF412, and the intersection point of the fourth lens 140 image side 144 on the optical axis to the fourth lens 140 image side 144 second The vertical distance between the inflection point close to the optical axis and the optical axis is represented by HIF422, which satisfies the following conditions: HIF412=2.0421mm; HIF412/HOI=0.4084.

The fifth lens 150 has positive refractive power and is made of plastic material. Its object side 152 is convex, its image side 154 is convex, and both are aspherical. One inflection point. The length of the contour curve of the maximum effective radius on the object side of the fifth lens is represented by ARS51, and the length of the contour curve of the maximum effective radius on the image side of the fifth lens is represented by ARS52. The contour curve length of 1/2 entrance pupil diameter (HEP) on the object side of the fifth lens is represented by ARE51, and the contour curve length of 1/2 entrance pupil diameter (HEP) on the image side of the fifth lens is represented by ARE52. The thickness of the fifth lens on the optical axis is TP5.

The horizontal displacement distance parallel to the optical axis between the intersection point of the object side 152 of the fifth lens 150 on the optical axis and the inflection point of the nearest optical axis of the object side 152 of the fifth lens 150 is represented by SGI511, and the image side 154 of the fifth lens 150 is at The horizontal displacement distance parallel to the optical axis between the intersection point on the optical axis and the inflection point of the fifth lens 150 image side 154 closest to the optical axis is represented by SGI521, which satisfies the following conditions: SGI511=0.00364mm; │SGI511│/(│ SGI511│+TP5)=0.00338; SGI521=-0.63365mm;│SGI521│/(│SGI521│+TP5)=0.37154.

The horizontal displacement distance parallel to the optical axis between the intersection point of the object side 152 of the fifth lens 150 on the optical axis and the second inflection point close to the optical axis of the object side 152 of the fifth lens 150 is represented by SGI512, and the image side of the fifth lens 150 is The horizontal displacement distance parallel to the optical axis between the intersection point of 154 on the optical axis and the second inflection point of the image side 154 of the fifth lens 150 close to the optical axis is represented by SGI522, which satisfies the following conditions: SGI512=-0.32032mm; │ SGI512│/(│SGI512│+TP5)=0.23009.

The horizontal displacement distance parallel to the optical axis between the intersection point of the object side 152 of the fifth lens 150 on the optical axis to the third inflection point of the object side 152 of the fifth lens 150 close to the optical axis is represented by SGI513, and the image side of the fifth lens 150 is The horizontal displacement distance parallel to the optical axis between the intersection point of 154 on the optical axis and the third inflection point on the image side 154 of the fifth lens 150 close to the optical axis is represented by SGI523, which satisfies the following conditions: SGI513=0mm; │SGI513│ /(│SGI513│+TP5)＝0; SGI523＝0mm; │SGI523│/(│SGI523│+TP5)＝0.

The horizontal displacement distance parallel to the optical axis between the intersection point of the object side 152 of the fifth lens 150 on the optical axis and the fourth inflection point close to the optical axis of the object side 152 of the fifth lens 150 is represented by SGI514, and the image side of the fifth lens 150 is The horizontal displacement distance parallel to the optical axis between the intersection point of 154 on the optical axis and the fourth inflection point on the image side 154 of the fifth lens 150 close to the optical axis is represented by SGI524, which satisfies the following conditions: SGI514=0mm; │SGI514│ /(│SGI514│+TP5)=0; SGI524=0mm;│SGI524│/(│SGI524│+TP5)=0.

The vertical distance between the inflection point of the nearest optical axis on the object side 152 of the fifth lens 150 and the optical axis is represented by HIF511, and the vertical distance between the inflection point of the nearest optical axis on the image side 154 of the fifth lens 150 and the optical axis is represented by HIF521. It satisfies the following conditions: HIF511=0.28212mm; HIF511/HOI=0.05642; HIF521=2.13850mm; HIF521/HOI=0.42770.

The vertical distance between the second inflection point close to the optical axis on the object side 152 of the fifth lens 150 and the optical axis is represented by HIF512, and the vertical distance between the second inflection point close to the optical axis on the image side 154 of the fifth lens 150 Expressed as HIF522, it satisfies the following conditions: HIF512=2.51384mm; HIF512/HOI=0.50277.

The vertical distance between the third inflection point close to the optical axis on the object side 152 of the fifth lens 150 and the optical axis is represented by HIF513, and the vertical distance between the third inflection point close to the optical axis on the image side 154 of the fifth lens 150 Expressed by HIF523, it satisfies the following conditions: HIF513=0mm; HIF513/HOI=0; HIF523=0mm; HIF523/HOI=0.

The vertical distance between the fifth lens 150 object side 152 and the fourth inflection point close to the optical axis and the optical axis is represented by HIF514, and the vertical distance between the fifth lens 150 image side 154 and the fourth inflection point close to the optical axis Expressed by HIF524, it satisfies the following conditions: HIF514=0mm; HIF514/HOI=0; HIF524=0mm; HIF524/HOI=0.

The sixth lens 160 has negative refractive power and is made of plastic material. The object side 162 is concave, and the image side 164 is concave. The object side 162 has two inflection points and the image side 164 has one inflection point. Thereby, the incident angle of each field of view on the sixth lens can be effectively adjusted to improve the aberration. The length of the contour curve of the maximum effective radius on the object side of the sixth lens is represented by ARS61, and the length of the contour curve of the maximum effective radius on the image side of the sixth lens is represented by ARS62. The length of the contour curve of 1/2 entrance pupil diameter (HEP) on the object side of the sixth lens is expressed by ARE61, and the length of the contour curve of 1/2 entrance pupil diameter (HEP) on the image side of the sixth lens is expressed by ARE62. The thickness of the sixth lens on the optical axis is TP6.

The horizontal displacement distance parallel to the optical axis between the intersection point of the object side 162 of the sixth lens 160 on the optical axis and the inflection point of the object side 162 of the sixth lens 160 parallel to the optical axis is represented by SGI611, and the image side 164 of the sixth lens 160 is at The horizontal displacement distance parallel to the optical axis between the point of intersection on the optical axis and the inflection point of the sixth lens 160 image side 164 closest to the optical axis is represented by SGI621, which satisfies the following conditions: SGI611=-0.38558mm; │SGI611│/( │SGI611│+TP6)＝0.27212; SGI621＝0.12386mm; │SGI621│/(│SGI621│+TP6)＝0.10722.

The horizontal displacement distance parallel to the optical axis between the intersection point of the object side 162 of the sixth lens 160 on the optical axis and the second inflection point close to the optical axis of the object side 162 of the sixth lens 160 is represented by SGI612, and the image side of the sixth lens 160 is The horizontal displacement distance parallel to the optical axis between the intersection point of 164 on the optical axis and the second inflection point of the image side 164 of the sixth lens 160 close to the optical axis is represented by SGI621, which satisfies the following conditions: SGI612=-0.47400mm; │ SGI612│/(│SGI612│+TP6)＝0.31488; SGI622＝0mm;│SGI622│/(│SGI622│+TP6)＝0.

The vertical distance between the inflection point of the nearest optical axis on the object side 162 of the sixth lens 160 and the optical axis is represented by HIF611, and the vertical distance between the inflection point of the nearest optical axis on the image side 164 of the sixth lens 160 and the optical axis is represented by HIF621. It satisfies the following conditions: HIF611=2.24283mm; HIF611/HOI=0.44857; HIF621=1.07376mm; HIF621/HOI=0.21475.

The vertical distance between the second inflection point close to the optical axis on the object side 162 of the sixth lens 160 and the optical axis is represented by HIF612, and the vertical distance between the second inflection point close to the optical axis on the image side 164 of the sixth lens 160 Expressed as HIF622, it satisfies the following conditions: HIF612=2.48895mm; HIF612/HOI=0.49779.

The vertical distance between the third inflection point close to the optical axis on the object side 162 of the sixth lens 160 and the optical axis is represented by HIF613, and the vertical distance between the third inflection point close to the optical axis on the image side 164 of the sixth lens 160 Expressed by HIF623, it satisfies the following conditions: HIF613=0mm; HIF613/HOI=0; HIF623=0mm; HIF623/HOI=0.

The vertical distance between the inflection point near the optical axis and the fourth inflection point on the object side 162 of the sixth lens 160 is represented by HIF614. Expressed by HIF624, it satisfies the following conditions: HIF614=0mm; HIF614/HOI=0; HIF624=0mm; HIF624/HOI=0.

The infrared filter 180 is made of glass, which is disposed between the sixth lens 160 and the imaging surface 190 and does not affect the focal length of the optical imaging module.

In the optical imaging module of this embodiment, the focal length of the lens group is f, the diameter of the entrance pupil is HEP, half of the maximum viewing angle is HAF, and its values are as follows: f=4.075mm; f/HEP=1.4; and HAF=50.001 degrees and tan(HAF) = 1.1918.

In the lens group of this embodiment, the focal length of the first lens 110 is f1, and the focal length of the sixth lens 160 is f6, which satisfy the following conditions: f1=-7.828mm; │f/f1│=0.52060; f6=-4.886 ; and │f1│>│f6│.

In the optical imaging module of this embodiment, the focal lengths of the second lens 120 to the fifth lens 150 are f2, f3, f4, and f5 respectively, which satisfy the following conditions: │f2│+│f3│+│f4│+│f5│ =95.50815 mm; │f1│+│f6│=12.71352mm and │f2│+│f3│+│f4│+│f5│>│f1│+│f6│.

The ratio of the focal length f of the optical imaging module to the focal length fp of each lens with positive refractive power is PPR, and the ratio of the focal length f of the optical imaging module to the focal length fn of each lens with negative refractive power is NPR. In the optical imaging module, the sum of PPR of all lenses with positive refractive power is ΣPPR=f/f2+f/f4+f/f5=1.63290, and the sum of NPR of all lenses with negative refractive power is ΣNPR=│f/f1│ +│f/f3│+│f/f6│=1.51305, ΣPPR/│ΣNPR│=1.07921. At the same time, the following conditions are also satisfied: │f/f2│=0.69101; │f/f3│=0.15834; │f/f4│=0.06883; │f/f5│=0.87305; │f/f6│=0.83412.

In the optical imaging module of the present embodiment, the distance between the object side 112 of the first lens 110 and the image side 164 of the sixth lens 160 is InTL, the distance between the object side 112 of the first lens 110 and the imaging surface 190 is HOS, and the aperture 100 to The distance between the imaging planes 180 is InS, half of the diagonal length of the effective sensing area of the image sensing element 192 is HOI, and the distance between the sixth lens image side 164 and the imaging plane 190 is BFL, which satisfies the following conditions: InTL+ BFL=HOS; HOS=19.54120 mm; HOI=5.0 mm; HOS/HOI=3.90824; HOS/f=4.7952; InS=11.685 mm; and InS/HOS=0.59794.

In the optical imaging module of this embodiment, the sum of the thicknesses of all lenses with refractive power on the optical axis is ΣTP, which satisfies the following conditions: ΣTP=8.13899 mm; and ΣTP/InTL=0.52477. In this way, the imaging contrast of the system and the pass rate of lens manufacturing can be taken into account at the same time, and an appropriate back focus can be provided to accommodate other components.

In the optical imaging module of this embodiment, the radius of curvature of the object side 112 of the first lens 110 is R1, and the radius of curvature of the image side 114 of the first lens 110 is R2, which satisfy the following condition: │R1/R2│=8.99987. In this way, the first lens 110 has an appropriate positive refractive power to avoid excessive increase of spherical aberration.

In the optical imaging module of the present embodiment, the radius of curvature of the object side 162 of the sixth lens 160 is R11, and the radius of curvature of the image side 164 of the sixth lens 160 is R12, which satisfies the following conditions: (R11-R12)/(R11+R12 ) = 1.27780. Thereby, it is beneficial to correct the astigmatism generated by the optical imaging module.

In the optical imaging module of this embodiment, the sum of the focal lengths of all lenses with positive refractive power is ΣPP, which satisfies the following conditions: ΣPP=f2+f4+f5=69.770mm; and f5/(f2+f4+f5)=0.067 . Thereby, it is helpful to properly distribute the positive refractive power of the single lens to other positive lenses, so as to suppress the occurrence of significant aberrations during the process of incident light.

In the optical imaging module of this embodiment, the sum of the focal lengths of all lenses with negative refractive power is ΣNP, which satisfies the following conditions: ΣNP=f1+f3+f6=-38.451mm; and f6/(f1+f3+f6)= 0.127. Thereby, it is helpful to properly distribute the negative refractive power of the sixth lens 160 to other negative lenses, so as to suppress the occurrence of significant aberrations during the incident light traveling process.

In the optical imaging module of this embodiment, the distance between the first lens 110 and the second lens 120 on the optical axis is IN12, which satisfies the following conditions: IN12=6.418mm; IN12/f=1.57491. In this way, it is helpful to improve the chromatic aberration of the lens and improve its performance.

In the optical imaging module of this embodiment, the distance between the fifth lens 150 and the sixth lens 160 on the optical axis is IN56, which satisfies the following conditions: IN56=0.025mm; IN56/f=0.00613. In this way, it is helpful to improve the chromatic aberration of the lens and improve its performance.

In the optical imaging module of this embodiment, the thicknesses of the first lens 110 and the second lens 120 on the optical axis are TP1 and TP2 respectively, which satisfy the following conditions: TP1=1.934mm; TP2=2.486mm; and (TP1+IN12 )/TP2=3.36005. In this way, it is helpful to control the sensitivity of optical imaging module manufacturing and improve its performance.

In the optical imaging module of this embodiment, the thicknesses of the fifth lens 150 and the sixth lens 160 on the optical axis are TP5 and TP6 respectively, and the distance between the aforementioned two lenses on the optical axis is IN56, which satisfies the following conditions: TP5= 1.072mm; TP6=1.031mm; and (TP6+IN56)/TP5=0.98555. Thereby, it is helpful to control the sensitivity of manufacturing the optical imaging module and reduce the overall height of the system.

In the optical imaging module of this embodiment, the distance between the third lens 130 and the fourth lens 140 on the optical axis is IN34, and the distance between the fourth lens 140 and the fifth lens 150 on the optical axis is IN45, which satisfies the following Conditions: IN34=0.401mm; IN45=0.025mm; and TP4/(IN34+TP4+IN45)=0.74376. In this way, it is helpful to slightly correct the aberration generated by the incident light traveling process layer by layer and reduce the overall height of the system.

In the optical imaging module of the present embodiment, the horizontal displacement distance of the fifth lens 150 object side 152 from the intersection point on the optical axis to the maximum effective radius position of the fifth lens 150 object side 152 on the optical axis is InRS51, and the fifth lens 150 looks like The horizontal displacement distance on the optical axis from the intersection point of the side surface 154 on the optical axis to the maximum effective radius position of the fifth lens 150 image side surface 154 is InRS52, and the thickness of the fifth lens 150 on the optical axis is TP5, which meets the following conditions: InRS51 = -0.34789 mm; InRS52 = -0.88185 mm; │InRS51│/TP5 = 0.32458 and │InRS52│/TP5 = 0.82276. Thereby, it is beneficial to the production and molding of the lens, and effectively maintains its miniaturization.

In the optical imaging module of the present embodiment, the vertical distance between the critical point of the object side 152 of the fifth lens 150 and the optical axis is HVT51, and the vertical distance between the critical point of the image side 154 of the fifth lens 150 and the optical axis is HVT52, which satisfies the following Conditions: HVT51 = 0.515349 mm; HVT52 = 0 mm.

In the optical imaging module of the present embodiment, the horizontal displacement distance from the intersection point of the sixth lens 160 object side 162 on the optical axis to the position of the maximum effective radius of the sixth lens 160 object side 162 on the optical axis is InRS61, and the sixth lens 160 images The horizontal displacement distance on the optical axis from the point of intersection of the side 164 on the optical axis to the maximum effective radius position of the sixth lens 160 as the side 164 is InRS62, and the thickness of the sixth lens 160 on the optical axis is TP6, which satisfies the following conditions: InRS61 = -0.58390 mm; InRS62 = 0.41976 mm; │InRS61│/TP6 = 0.56616 and │InRS62│/TP6 = 0.40700. Thereby, it is beneficial to the production and molding of the lens, and effectively maintains its miniaturization.

In the optical imaging module of this embodiment, the vertical distance between the critical point of the object side 162 of the sixth lens 160 and the optical axis is HVT61, and the vertical distance between the critical point of the image side 164 of the sixth lens 160 and the optical axis is HVT62, which satisfies the following Conditions: HVT61=0mm; HVT62=0mm.

In the optical imaging module of this embodiment, it satisfies the following condition: HVT51/HOI=0.1031. Thereby, the aberration correction of the peripheral field of view of the optical imaging module is facilitated.

In the optical imaging module of this embodiment, it satisfies the following condition: HVT51/HOS=0.02634. Thereby, the aberration correction of the peripheral field of view of the optical imaging module is facilitated.

In the optical imaging module of this embodiment, the second lens 120, the third lens 130 and the sixth lens 160 have negative refractive power, the dispersion coefficient of the second lens 120 is NA2, the dispersion coefficient of the third lens 130 is NA3, and the sixth lens 130 has a dispersion coefficient of NA3. The dispersion coefficient of the lens 160 is NA6, which satisfies the following condition: NA6/NA2≦1. Thereby, it is helpful to correct the chromatic aberration of the optical imaging module.

In the optical imaging module of this embodiment, the TV distortion of the optical imaging module during imaging is TDT, and the optical distortion during imaging is ODT, which satisfy the following conditions: TDT=2.124%; ODT=5.076%.

In the optical imaging module of the present embodiment, LS is 12mm, PhiA is 2 times EHD62=6.726mm (EHD62: the maximum effective radius of the sixth lens 160 image side 164), PhiC=PhiA+2 times TH2=7.026mm, PhiD= PhiC+2 times (TH1+TH2)=7.426mm, TH1 is 0.2mm, TH2 is 0.15mm, PhiA/PhiD is, TH1+TH2 is 0.35mm, (TH1+TH2)/HOI is 0.035, (TH1+TH2) /HOS was 0.0179, 2 times (TH1+TH2)/PhiA was 0.1041, and (TH1+TH2)/LS was 0.0292.

Then refer to Table 1 and Table 2 below.

Table 2. Aspheric coefficients of the first optical embodiment

According to Table 1 and Table 2, the following values related to the length of the contour curve can be obtained:

Table 1 shows the detailed structural data of the first optical embodiment in FIGS. 1A-1G , where the units of the radius of curvature, thickness, distance and focal length are mm, and surfaces 0-16 represent surfaces from the object side to the image side in sequence. Table 2 shows the aspheric surface data in the first optical embodiment, wherein k represents the conical surface coefficient in the aspheric surface curve equation, and A1-A20 represent the 1st-20th order aspheric surface coefficients of each surface. In addition, the following optical embodiment tables correspond to the schematic diagrams and aberration curves of each optical embodiment, and the definitions of the data in the tables are the same as those in Table 1 and Table 2 of the first optical embodiment, and will not be repeated here. In addition, the definitions of the mechanical component parameters of the following optical embodiments are the same as those of the first optical embodiment.

Second optical embodiment

Please refer to FIG. 3A and FIG. 3B, wherein FIG. 3A shows a schematic diagram of a lens group of an optical imaging module according to the second optical embodiment of the present invention, and FIG. 3B shows the optical imaging of the second optical embodiment in sequence from left to right Curves of spherical aberration, astigmatism and optical distortion of the module. It can be seen from FIG. 3A that the optical imaging module includes an aperture 200, a first lens 210, a second lens 220, a third lens 230, a fourth lens 240, a fifth lens 250, a sixth lens 260 and The seventh lens 270 , the infrared filter 280 , the imaging surface 290 and the image sensor 292 .

The first lens 210 has negative refractive power and is made of plastic material. The object side 212 is convex, and the image side 214 is concave, both of which are aspherical. Both the object side 212 and the image side 214 have an inflection point.

The second lens 220 has negative refractive power and is made of plastic material. The object side 222 is convex, and the image side 224 is concave, both of which are aspherical. Both the object side 222 and the image side 224 have an inflection point.

The third lens 230 has positive refractive power and is made of plastic material. The object side 232 is convex, and the image side 234 is concave, both of which are aspherical. The object side 232 has an inflection point.

The fourth lens 240 has a positive refractive power and is made of plastic material. Its object side 242 is concave, its image side 244 is convex, and both are aspherical. The object side 242 has an inflection point and the image side 244 has two an inflection point.

The fifth lens 250 has positive refractive power and is made of plastic material. The object side 252 is convex, and the image side 254 is concave, both of which are aspherical. Both the object side 252 and the image side 254 have an inflection point.

The sixth lens 260 has a negative refractive power and is made of plastic material. The object side 262 is concave, and the image side 264 is convex, both of which are aspherical. Both the object side 262 and the image side 264 have two inflection points. . In this way, the incident angle of each field of view on the sixth lens 260 can be effectively adjusted to improve the aberration.

The seventh lens 270 has a negative refractive power and is made of plastic. The object side 272 is convex, and the image side 274 is concave. Thereby, it is beneficial to shorten the back focal length to maintain miniaturization. In addition, both the object side 272 and the image side 274 of the seventh lens have an inflection point, which can effectively suppress the incident angle of the off-axis field of view light, and further correct the aberration of the off-axis field of view.

The infrared filter 280 is made of glass, which is disposed between the seventh lens 270 and the imaging surface 290 and does not affect the focal length of the optical imaging module.

Please refer to Table 3 and Table 4 below.

Table 4. Aspheric coefficients of the second optical embodiment

In the second optical embodiment, the curve equation of the aspheric surface is expressed in the form of the first optical embodiment. In addition, the definitions of the parameters in the table below are the same as those in the first optical embodiment, and will not be repeated here.

According to Table 3 and Table 4, the following conditional values can be obtained:

According to Table 3 and Table 4, the following conditional values can be obtained: according to Table 1 and Table 2, the following values related to the length of the contour curve can be obtained:

According to Table 3 and Table 4, the following conditional values can be obtained:

third optical embodiment

Please refer to FIG. 4A and FIG. 4B, wherein FIG. 4A shows a schematic diagram of a lens group of an optical imaging module according to the third optical embodiment of the present invention, and FIG. 4B shows the optical imaging of the third optical embodiment in sequence from left to right Curves of spherical aberration, astigmatism and optical distortion of the module. It can be seen from FIG. 4A that the optical imaging module includes a first lens 310, a second lens 320, a third lens 330, an aperture 300, a fourth lens 340, a fifth lens 350, a sixth lens 360, Infrared filter 380 , imaging surface 390 and image sensor 392 .

The first lens 310 has negative refractive power and is made of glass. The object side 312 is convex, and the image side 314 is concave, both of which are spherical.

The second lens 320 has negative refractive power and is made of glass. The object side 322 is concave, and the image side 324 is convex, both of which are spherical.

The third lens 330 has positive refractive power and is made of plastic material. The object side 332 is convex, and the image side 334 is convex, both of which are aspherical. The image side 334 has an inflection point.

The fourth lens 340 has negative refractive power and is made of plastic material. The object side 342 is concave, and the image side 344 is concave, both of which are aspherical. The image side 344 has an inflection point.

The fifth lens 350 has positive refractive power and is made of plastic material. The object side 352 is convex, and the image side 354 is convex, both of which are aspherical.

The sixth lens 360 has negative refractive power and is made of plastic material. The object side 362 is convex, and the image side 364 is concave, both of which are aspherical. Both the object side 362 and the image side 364 have an inflection point. Thereby, it is beneficial to shorten the back focal length to maintain miniaturization. In addition, the incident angle of off-axis field of view light can be effectively suppressed, and the aberration of the off-axis field of view can be further corrected.

The infrared filter 380 is made of glass, which is disposed between the sixth lens 360 and the imaging surface 390 and does not affect the focal length of the optical imaging module.

Please refer to Table 5 and Table 6 below.

Table 6. Aspheric coefficients of the third optical embodiment

In the third optical embodiment, the curve equation of the aspheric surface is expressed in the form of the first optical embodiment. In addition, the definitions of the parameters in the table below are the same as those in the first optical embodiment, and will not be repeated here.

According to Table 5 and Table 6, the following conditional values can be obtained:

According to Table 5 and Table 6, the following values related to the length of the contour curve can be obtained:

According to Table 5 and Table 6, the following conditional values can be obtained:

Fourth optical embodiment

Please refer to FIG. 5A and FIG. 5B, wherein FIG. 5A shows a schematic diagram of a lens group of an optical imaging module according to the fourth optical embodiment of the present invention, and FIG. 5B shows the optical imaging of the fourth optical embodiment in sequence from left to right. Curves of spherical aberration, astigmatism and optical distortion of the module. It can be seen from FIG. 5A that the optical imaging module sequentially includes a first lens 410, a second lens 420, an aperture 400, a third lens 430, a fourth lens 440, a fifth lens 450, and an infrared filter 480 from the object side to the image side. , an imaging surface 490 and an image sensing element 492 .

The first lens 410 has negative refractive power and is made of glass. The object side 412 is convex, and the image side 414 is concave, both of which are spherical.

The second lens 420 has negative refractive power and is made of plastic material. The object side 422 is concave, and the image side 424 is concave, both of which are aspherical. The object side 422 has an inflection point.

The third lens 430 has positive refractive power and is made of plastic material. The object side 432 is convex, and the image side 434 is convex, both of which are aspherical. The object side 432 has an inflection point.

The fourth lens 440 has positive refractive power and is made of plastic material. The object side 442 is convex and the image side 444 is convex, both of which are aspherical. The object side 442 has an inflection point.

The fifth lens 450 has negative refractive power and is made of plastic material. The object side 452 is concave and the image side 454 is concave, both of which are aspherical. The object side 452 has two inflection points. Thereby, it is beneficial to shorten the back focal length to maintain miniaturization.

The infrared filter 480 is made of glass, which is disposed between the fifth lens 450 and the imaging surface 490 and does not affect the focal length of the optical imaging module.

Please refer to Table 7 and Table 8 below.

Table 8. Aspheric coefficients of the fourth optical embodiment

In the fourth optical embodiment, the curve equation of the aspheric surface is expressed in the form of the first optical embodiment. In addition, the definitions of the parameters in the table below are the same as those in the first optical embodiment, and will not be repeated here.

According to Table 7 and Table 8, the following conditional values can be obtained:

According to Table 7 and Table 8, the following values related to the length of the contour curve can be obtained:

According to Table 7 and Table 8, the following conditional values can be obtained:

Fifth optical embodiment

Please refer to FIG. 6A and FIG. 6B, wherein FIG. 6A shows a schematic diagram of a lens group of an optical imaging module according to the fifth optical embodiment of the present invention, and FIG. 6B shows the optical imaging of the fifth optical embodiment in sequence from left to right Curves of spherical aberration, astigmatism and optical distortion of the module. It can be seen from FIG. 6A that the optical imaging module includes an aperture 500, a first lens 510, a second lens 520, a third lens 530, a fourth lens 540, an infrared filter 570, an imaging surface 580 and Image sensing element 590 .

The first lens 510 has positive refractive power and is made of plastic material. The object side 512 is convex, and the image side 514 is convex, both of which are aspherical. The object side 512 has an inflection point.

The second lens 520 has negative refractive power and is made of plastic material. Its object side 522 is convex, its image side 524 is concave, and both are aspherical. The object side 522 has two inflection points and the image side 524 has One inflection point.

The third lens 530 has positive refractive power and is made of plastic material. Its object side 532 is concave, its image side 534 is convex, and both are aspherical. The object side 532 has three inflection points and the image side 534 has One inflection point.

The fourth lens 540 has negative refractive power and is made of plastic material. Its object side 542 is concave, and its image side 544 is concave, and both are aspherical. The object side 542 has two inflection points and the image side 544 has One inflection point.

The infrared filter 570 is made of glass, which is disposed between the fourth lens 540 and the imaging surface 580 and does not affect the focal length of the optical imaging module.

Please refer to Table 9 and Table 10 below.

Table 10. Aspheric coefficients of the fifth optical embodiment

In the fifth optical embodiment, the curve equation of the aspheric surface is expressed in the form of the first optical embodiment. In addition, the definitions of the parameters in the table below are the same as those in the first optical embodiment, and will not be repeated here.

According to Table 9 and Table 10, the following conditional values can be obtained:

According to Table 9 and Table 10, the following conditional values can be obtained:

According to Table 9 and Table 10, the values related to the length of the contour curve can be obtained:

Sixth optical embodiment

Please refer to FIG. 7A and FIG. 7B, wherein FIG. 7A shows a schematic diagram of a lens group of an optical imaging module according to the sixth optical embodiment of the present invention, and FIG. 7B shows the optical imaging of the sixth optical embodiment in sequence from left to right Curves of spherical aberration, astigmatism and optical distortion of the module. As can be seen from FIG. 7A, the optical imaging module includes a first lens 610, an aperture 600, a second lens 620, a third lens 630, an infrared filter 670, an imaging surface 680, and an image sensing element 690 in order from the object side to the image side. .

The first lens 610 has a positive refractive power and is made of plastic. The object side 612 is convex, and the image side 614 is concave, both of which are aspherical.

The second lens 620 has negative refractive power and is made of plastic material. The object side 622 is concave, and the image side 624 is convex, both of which are aspherical. The image side 624 has an inflection point.

The third lens 630 has a positive refractive power and is made of plastic material. Its object side 632 is convex, its image side 634 is convex, and both are aspherical. The object side 632 has two inflection points and the image side 634 has a One inflection point.

The infrared filter 670 is made of glass, which is disposed between the third lens 630 and the imaging surface 680 and does not affect the focal length of the optical imaging module.

Please refer to Table 11 and Table 12 below.

Table 12. Aspheric coefficients of the sixth optical embodiment

In the sixth optical embodiment, the curve equation of the aspheric surface is expressed in the form of the first optical embodiment. In addition, the definitions of the parameters in the table below are the same as those in the first optical embodiment, and will not be repeated here.

According to Table 11 and Table 12, the following conditional values can be obtained:

According to Table 11 and Table 12, the following conditional values can be obtained:

According to Table 11 and Table 12, the values related to the length of the contour curve can be obtained:

The utility model also provides a device, which is one of the groups consisting of electronic portable devices, electronic wearable devices, electronic monitoring devices, electronic information devices, electronic communication devices, machine vision devices and vehicle electronic devices. The equipment includes any of the above-mentioned optical imaging modules mentioned in the utility model, and any of the above-mentioned optical imaging modules mentioned in the utility model can reduce the required mechanism space and Increase the viewing area of the screen.

Please refer to FIG. 8A, which shows the optical imaging module 712 and the optical imaging module 714 (front lens) of the present invention used in the mobile communication device 71 (Smart Phone), and FIG. 8B shows the optical imaging module 722 of the present invention used in The mobile information device 72 (Notebook), FIG. 8C shows the optical imaging module 732 of the present invention used in a smart watch 73 (Smart Watch), and FIG. 8D shows the optical imaging module 742 of the present invention used in a smart head-mounted device 74 (Smart Hat), Fig. 8E shows that the optical imaging module 752 of the present utility model is used in a security monitoring device 75 (IP Cam), and Fig. 8F shows that the optical imaging module 762 of the present utility model is used in a vehicle image device 76, Fig. 8G is the optical imaging module 772 of the present invention used in the unmanned aircraft device 77 , and FIG. 8H is the optical imaging module 782 of the present invention used in the extreme sports imaging device 78 .

Although the present utility model has been disclosed as above in terms of implementation, it is not intended to limit the present utility model. Anyone skilled in the art can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, the scope of protection of the present utility model should be defined by the scope of claims in this case.

Although the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that the present invention as defined by the scope of the claims and their equivalents shall not depart from the present invention. Various changes in form and detail may be made within the spirit and scope of the invention.

Claims (25)

1. a kind of optical imagery module, characterized by comprising:

One circuit element includes a circuit substrate, a sensor stand and an Image Sensor；Have on the circuit substrate Multiple circuit junctions；The sensor stand is set on the circuit substrate；The Image Sensor has a first surface and one Second surface, the first surface is towards the circuit substrate and has multiple image contacts, and sets respectively on multiple image contact There is a signal transduction element, and multiple signal transduction element is connect with multiple circuit junction on the circuit substrate respectively, Make multiple image contact pass through the corresponding multiple circuit of multiple signal transduction element electric connection being arranged on to connect Point；There is a sensing face on the second surface；In addition, the Image Sensor and multiple signal transduction element are by the sensing Device bracket is surrounded；

One lens element includes a lens pedestal and a lens group；The lens pedestal is made with opaque material, and has one Accommodating hole makes the lens pedestal in hollow through the lens pedestal both ends；In addition, the lens pedestal is set to the sensor branch Make the accommodating hole face Image Sensor on frame；The lens group includes the lens that at least two panels has refractive power, and It is set on the lens pedestal and is located in the accommodating hole；In addition, the imaging surface of the lens group is located at the sensing face, and the lens The optical axis of group and the centre normal of the sensing face overlap, and enable light by the lens group in the accommodating hole and are projected to this Sensing face；

In addition, the optical imagery module more meets following condition:

1.0≤f/HEP≤10.0；

0deg<HAF≤150deg；

0mm<PhiD≤18mm；

0<PhiA/PhiD≤0.99；And

0.9≤2(ARE/HEP)≤2.0

Wherein, f is the focal length of the lens group；HEP is the entrance pupil diameter of the lens group；HAF is the maximum visual of the lens group The half of angle；PhiD be the lens pedestal outer peripheral edge and perpendicular to the minimum side length in the plane of the optical axis of the lens group Maximum value；PhiA be the lens group closest to the imaging surface lens surface maximum effective diameter；ARE is in the lens group Any lens surface of any lens and the intersection point of optical axis are starting point, and with the vertical height apart from 1/2 entrance pupil diameter of optical axis The position at place is terminal, along the resulting contour curve length of the profile of the lens surface.

2. optical imagery module as described in claim 1, which is characterized in that more meet following condition:

0.9≤ARS/EHD≤2.0；Wherein, ARS is with any lens surface of any lens in the lens group and the friendship of optical axis Point be starting point, and using at the maximum effective radius of the lens surface as terminal, along the resulting profile of the profile of the lens surface Length of curve；EHD is the maximum effective radius of any surface of any lens in the lens group.

3. optical imagery module as described in claim 1, which is characterized in that more meet following condition:

PLTA≤100μm；PSTA≤100μm；NLTA≤100μm；

NSTA≤100μm；SLTA≤100μm；SSTA≤100μm；

And │ TDT │ < 250%；

Wherein, first defining HOI is the maximum image height on the imaging surface perpendicular to optical axis；PLTA is the optical imagery module The visible light longest operation wavelength of positive meridian plane light fan passes through the entrance pupil edge and is incident on the imaging surface at 0.7HOI Lateral aberration；PSTA is that the most short operation wavelength of visible light that the positive meridian plane light of the optical imagery module is fanned passes through the incidence Pupil edge is simultaneously incident on the negative sense meridian plane light that the lateral aberration NLTA on the imaging surface at 0.7HOI is the optical imagery module The visible light longest operation wavelength of fan passes through the entrance pupil edge and is incident on the lateral aberration on the imaging surface at 0.7HOI； NSTA is that the most short operation wavelength of visible light that the negative sense meridian plane light of the optical imagery module is fanned is incorporated to by the entrance pupil edge Penetrate the lateral aberration on the imaging surface at 0.7HOI；SLTA is the visible light longest that the sagittal surface light of the optical imagery module is fanned Operation wavelength passes through the entrance pupil edge and is incident on the lateral aberration on the imaging surface at 0.7HOI；SSTA is the optical imagery The most short operation wavelength of visible light of the sagittal surface light fan of module passes through the entrance pupil edge and is incident on 0.7HOI on the imaging surface The lateral aberration at place；TDT be the optical imagery module in knot as when TV distortion.

4. optical imagery module as described in claim 1, which is characterized in that the lens group includes four saturating with refracting power Mirror is sequentially one first lens, one second lens, a third lens and one the 4th lens by object side to image side, and the lens Group meets following condition:

0.1≤InTL/HOS≤0.95；

Wherein, HOS be first lens object side to the imaging surface in the distance on optical axis；InTL is the object of first lens Side to the 4th lens image side surface in the distance on optical axis.

5. optical imagery module as described in claim 1, which is characterized in that the lens group includes five saturating with refracting power Mirror is sequentially that one first lens, one second lens, a third lens, one the 4th lens and one the 5th are saturating by object side to image side Mirror, and the lens group meets following condition:

0.1≤InTL/HOS≤0.95；

Wherein, HOS be first lens object side to the imaging surface in the distance on optical axis；InTL is the object of first lens Side to the 5th lens image side surface in the distance on optical axis.

6. optical imagery module as described in claim 1, which is characterized in that the lens group includes six saturating with refracting power Mirror, by object side to image side be sequentially one first lens, one second lens, a third lens, one the 4th lens, one the 5th lens with And one the 6th lens, and the lens group meets following condition:

0.1≤InTL/HOS≤0.95；

Wherein, HOS be first lens object side to the imaging surface in the distance on optical axis；InTL is the object of first lens Side to the 6th lens image side surface in the distance on optical axis.

7. optical imagery module as described in claim 1, which is characterized in that the lens group includes seven saturating with refracting power Mirror, by object side to image side be sequentially one first lens, one second lens, a third lens, one the 4th lens, one the 5th lens, One the 6th lens and one the 7th lens, and the lens group meets following condition:

0.1≤InTL/HOS≤0.95；

Wherein, HOS be first lens object side to the imaging surface in the distance on optical axis；InTL is the object of first lens Side to the 7th lens image side surface in the distance on optical axis.

8. optical imagery module as described in claim 1, which is characterized in that more meet following condition: MTFQ0 >=0.2； MTFQ3≥0.01；And MTFQ7 >=0.01；

Wherein, first defining HOI is the maximum image height on the imaging surface perpendicular to optical axis；MTFQ0 is visible light in the imaging Optical axis on face is in modulation conversion comparison rate of transform when spatial frequency 110cycles/mm；MTFQ3 be visible light this at 0.3HOI in image planes is in modulation conversion comparison rate of transform when spatial frequency 110cycles/mm；MTFQ7 is that visible light exists 0.7HOI on the imaging surface is in modulation conversion comparison rate of transform when spatial frequency 110cycles/mm.

9. optical imagery module as described in claim 1, which is characterized in that further include an aperture, and the aperture meet it is following Formula: 0.2≤InS/HOS≤1.1；Wherein, InS be the aperture to the imaging surface in the distance on optical axis；HOS is the lens group Farthest away from the lens surface of the imaging surface to the imaging surface in the distance on optical axis.

10. optical imagery module as described in claim 1, which is characterized in that the lens pedestal includes a lens barrel and one Lens carrier；The lower through-hole that the lens carrier is fixed on the circuit substrate and runs through the lens carrier both ends with one, makes this Image Sensor S is located in the lower through-hole, which is set in the lens carrier and is located in the lower through-hole, lens barrel tool There is a upper through-hole for running through the lens barrel both ends, through-hole on this is made to be connected to the lower through-hole and collectively form the accommodating hole；The lens Bracket is fixedly installed on the sensor stand, and the sensing face of the upper through-hole face of the lens barrel Image Sensor；In addition, The lens group is set in the lens barrel and is located on this in through-hole, and PhiD refer to the outer peripheral edge of the lens carrier and perpendicular to this thoroughly The maximum value of minimum side length in the plane of the optical axis of microscope group.

11. optical imagery module as claimed in claim 10, which is characterized in that more meet following condition: 0mm < TH1+TH2≤ 1.5mm；Wherein, TH1 is the maximum gauge of the lens carrier；TH2 is the minimum thickness of the lens barrel.

12. optical imagery module as claimed in claim 10, which is characterized in that more meet following condition: 0 < (TH1+TH2)/ HOI≤0.95；Wherein, TH1 is the maximum gauge of the lens carrier；TH2 is the minimum thickness of the lens barrel；HOI is the imaging surface On perpendicular to optical axis maximum image height.

13. optical imagery module as claimed in claim 10, which is characterized in that there is external screw thread on the periphery wall of the lens barrel, And the lens carrier makes the lens barrel be set to the lens branch in having internal screw thread and the external thread spiro fastening on the hole wall of the lower through-hole In frame and it is fixed in the lower through-hole.

14. optical imagery module as claimed in claim 10, which is characterized in that be equipped between the lens barrel and the lens carrier glutinous Glue is simultaneously glued mutually fixed with viscose, is set to the lens barrel in the lens carrier and is fixed in the lower through-hole.

15. optical imagery module as described in claim 1, which is characterized in that the lens pedestal is made in a manner of being integrally formed.

16. optical imagery module as claimed in claim 15, which is characterized in that further included an infrared filter, and should Infrared filter is set in the lens pedestal or is located above the Image Sensor on the sensor stand.

17. optical imagery module as claimed in claim 10, which is characterized in that further included an infrared filter, be arranged In the lens barrel, in the lens carrier or on the sensor stand and above the Image Sensor.

18. optical imagery module as described in claim 1, which is characterized in that further included an infrared filter, and this is thoroughly Mirror pedestal includes a filter supporter, which has an optical filter through-hole for running through the filter supporter both ends, And the infrared filter is set in the filter supporter and is located in the optical filter through-hole, and the filter supporter is set to On the sensor stand, so that the infrared filter be made to be located above the Image Sensor.

19. optical imagery module as claimed in claim 18, which is characterized in that the lens pedestal includes that a lens barrel and one are saturating Mirror support；The lens barrel has a upper through-hole for running through the lens barrel both ends, and the lens carrier then has one to run through the lens carrier The lower through-hole at both ends, the lens barrel are set in the lens carrier and are located in the lower through-hole；The lens carrier is fixed on the optical filtering On plate rack, which is connected to through-hole on this and the optical filter through-hole and collectively forms the accommodating hole, and the lens barrel The sensing face of the upper through-hole face Image Sensor；In addition, the lens group is set in the lens barrel and is located on this in through-hole, And PhiD refers to the outer peripheral edge of the lens carrier and perpendicular to the maximum value of the minimum side length in the plane of the optical axis of the lens group.

20. optical imagery module as claimed in claim 19, which is characterized in that more meet following condition: 0mm < TH1+TH2≤ 1.5mm；Wherein, TH1 is the maximum gauge of the lens carrier；TH2 is the minimum thickness of the lens barrel.

21. optical imagery module as claimed in claim 19, which is characterized in that more meet following condition: 0 < (TH1+TH2)/ HOI≤0.95；Wherein, TH1 is the maximum gauge of the lens carrier；TH2 is the minimum thickness of the lens barrel；HOI is the imaging surface On perpendicular to optical axis maximum image height.

22. optical imagery module as claimed in claim 19, which is characterized in that there is external screw thread on the periphery wall of the lens barrel, And the lens carrier makes the lens barrel be set to the lens branch in having internal screw thread and the external thread spiro fastening on the hole wall of the lower through-hole In frame and it is located in the lower through-hole；In addition, equipped with viscose and glued mutually solid with viscose between the lens carrier and filter supporter It is fixed, so that the lens carrier be made to be fixed in the filter supporter.

23. optical imagery module as claimed in claim 19, which is characterized in that be equipped between the lens barrel and the lens carrier glutinous Glue is simultaneously glued mutually fixed with viscose, and the lens barrel is made to be set in the lens carrier and be located in the lower through-hole；In addition, the lens branch It is equipped with viscose between frame and filter supporter and is mutually fixed so that viscose is glued, so that the lens carrier be made to be fixed on the optical filter branch On frame.

24. optical imagery module as described in claim 1, which is characterized in that multiple signal transduction element is selected from tin ball, convex Made by block, pin or its constituted group.

25. a kind of equipment, which is characterized in that the equipment be electronic portable device, electronics wearable device, electronic monitoring device, One of electronic information aid, electronic communication equipment, machine vision device, device for vehicular electronic and constituted group, the equipment Include the described in any item optical imagery modules of claim 1-24.