CN207611189U - Optical imaging lens - Google Patents

Abstract

This application discloses a kind of optical imaging lens, which includes sequentially by object side to image side along optical axis：First lens, the second lens, the third lens, the 4th lens.It is convex surface that first lens, which have positive light coke, object side,；It is concave surface that second lens, which have positive light coke or negative power, object side, and image side surface is convex surface；It is concave surface that the third lens, which have positive light coke, object side, and image side surface is convex surface；4th lens have positive light coke or negative power.The effective focal length f1 of first lens and total effective focal length f of optical imaging lens meet 1.2 ＜ f1/f ＜ 1.8.

Description

Optical imaging lens

Technical field

This application involves a kind of optical imaging lens, more specifically, this application involves it is a kind of include four lens optics Imaging lens.

Background technology

In recent years, with the rapid development of depth recognition technology, three-dimensional depth camera is in AR enhancing technologies using further Extensively.Main flow direction one of of the structure light scheme as depth recognition technology, carrying out the principle of depth recognition is：By projection lens Head module projects particular image (coding pattern or dot matrix image) in target object；It is received using an imaging receiver module From the reflected image information of the target object；Processing by back-end algorithm to reception image information obtains object The depth information of body.Core element one of of the imaging receiver camera lens as structure light depth recognition technology, optical property it is excellent The bad accuracy that will be largely affected by depth recognition.

Therefore, it is necessary to it is a kind of with small aberration, high resolution characteristic, can depth recognition application in be used as imaging receiver The optical imaging lens that camera lens uses.

Utility model content

This application provides it is being used as imaging receiver camera lens in depth recognition application, can at least solve or part Solve the optical imaging lens of above-mentioned at least one disadvantage in the prior art.

On the one hand, this application discloses such a optical imaging lens, the camera lens along optical axis by object side to image side according to Sequence may include：First lens, the second lens, the third lens, the 4th lens.First lens can have positive light coke, object side It can be convex surface；Second lens, which have positive light coke or negative power, object side, to be concave surface, and image side surface can be convex surface；Third Lens, which can have positive light coke, object side, to be concave surface, and image side surface can be convex surface；4th lens have positive light coke or negative light Focal power.The effective focal length f1 of first lens and total effective focal length f of optical imaging lens can meet 1.2 ＜ f1/f ＜ 1.8.

In one embodiment, optical imaging lens may also include be set to the 4th lens and optical imaging lens at Infrared band pass filter between image planes, the band-pass wavelength λ of the infrared band pass filter can be based on floating using optical source wavelength, and And when the transmitance of band-pass wavelength λ is more than 50%, the long wave cut-off wavelength of band-pass wavelength λ is than the longest using optical source wavelength The short wavelength cutoff wavelength of wavelength long 0nm to 30nm, band-pass wavelength λ are than the minimal wave length short 0nm to 30nm using optical source wavelength.

In one embodiment, total effective coke of the radius of curvature R 1 of the object side of the first lens and optical imaging lens It can meet 0.3 ＜ R1/f ＜ 0.7 away from f.

In one embodiment, the radius of curvature R 1 of the object side of the first lens and the effective focal length f1 of the first lens can Meet 0.3 ＜ R1/f1 ＜ 0.6.

In one embodiment, the effective half bore DT11 of maximum and the first lens of the object side of the first lens are in optical axis On center thickness CT1 can meet 1.7 ＜ DT11/CT1 ＜ 2.2.

In one embodiment, the first lens, the second lens, the third lens and the 4th lens are on optical axis Spacing distance TTL of the imaging surface on optical axis of the object side of the sum of heart thickness ∑ CT and the first lens to optical imaging lens can Meet 0.2 ＜ ∑ CT/TTL ＜ 0.5.

In one embodiment, the spacing distance T12 and the first lens of the first lens and the second lens on optical axis Spacing distance TTL of the imaging surface on optical axis of object side to optical imaging lens can meet 0.1 ＜ T12/TTL ＜ 0.2.

In one embodiment, spacing distance T34 and the second lens on optical axis of the third lens and the 4th lens and Spacing distance T23 of the third lens on optical axis can meet T34/T23 ＜ 0.2.

In one embodiment, the second lens in center thickness CT2 and the third lens on optical axis on optical axis Heart thickness CT3 can meet 0.4 ＜ CT2/CT3 ＜ 0.7.

In one embodiment, the 4th lens are in the edge thickness ET4 of center thickness CT4 and the 4th lens on optical axis 1.2 ＜ CT4/ET4 ＜ 2.4 can be met.

In one embodiment, the object side of the maximum effective half bore DT11 and the second lens of the object side of the first lens The effective half bore DT21 of maximum in face can meet 1.0≤DT11/DT21 ＜ 1.3.

In one embodiment, the image side of the maximum effective half bore DT11 and the second lens of the object side of the first lens The effective half bore DT22 of maximum in face can meet 0.8 ＜ DT11/DT22 ＜ 1.1.

In one embodiment, the curvature of the image side surface of the radius of curvature R 5 and the third lens of the object side of the third lens Radius R6 can meet 0.9 ＜ R5/R6 ＜ 1.3.

In one embodiment, the intersection point of the object side of the third lens and optical axis to the object side of the third lens maximum Distance SAG31 of effective half bore vertex on optical axis can meet -1.3 ＜ with the third lens in the center thickness CT3 on optical axis SAG31/CT3 ＜ -0.7.

In one embodiment, the effective half bore DT42 of maximum of the image side surface of the 4th lens and optical imaging lens The half ImgH of the effective pixel area diagonal line length of photosensitive element can meet 0.7 ＜ DT42/ImgH ＜ 1 on imaging surface.

In one embodiment, total effective focal length f of the optical imaging lens and Entry pupil diameters EPD of optical imaging lens F/EPD≤2.1 can be met.

On the other hand, this application discloses such a optical imaging lens, and the camera lens is along optical axis by object side to image side Sequentially it may include：First lens, the second lens, the third lens, the 4th lens.First lens can have positive light coke, object side Face can be convex surface；Second lens, which have positive light coke or negative power, object side, to be concave surface, and image side surface can be convex surface；The Three lens, which can have positive light coke, object side, to be concave surface, and image side surface can be convex surface；4th lens have positive light coke or negative Focal power.Second lens can meet 0.4 with the third lens in the center thickness CT2 on optical axis in the center thickness CT3 on optical axis ＜ CT2/CT3 ＜ 0.7.

Another aspect, this application discloses such a optical imaging lens, and the camera lens is along optical axis by object side to image side Sequentially it may include：First lens, the second lens, the third lens, the 4th lens.First lens can have positive light coke, object side Face can be convex surface；Second lens, which have positive light coke or negative power, object side, to be concave surface, and image side surface can be convex surface；The Three lens, which can have positive light coke, object side, to be concave surface, and image side surface can be convex surface；4th lens have positive light coke or negative Focal power.Optical imaging lens may also include the infrared band logical being set between the 4th lens and the imaging surface of optical imaging lens Optical filter, the band-pass wavelength λ of the infrared band pass filter can be based on floating using optical source wavelength, and work as the saturating of band-pass wavelength λ When crossing rate more than 50%, the comparable longest wavelength long 0nm to 30nm using optical source wavelength of long wave cut-off wavelength of band-pass wavelength λ, The short wavelength cutoff wavelength of band-pass wavelength λ is than the minimal wave length short 0nm to 30nm using optical source wavelength.

Another aspect, this application discloses such a optical imaging lens, and the camera lens is along optical axis by object side to image side Sequentially it may include：First lens, the second lens, the third lens, the 4th lens.First lens can have positive light coke, object side Face can be convex surface；Second lens, which have positive light coke or negative power, object side, to be concave surface, and image side surface can be convex surface；The Three lens, which can have positive light coke, object side, to be concave surface, and image side surface can be convex surface；4th lens have positive light coke or negative Focal power.Total effective focal length f of optical imaging lens and the Entry pupil diameters EPD of optical imaging lens can meet f/EPD≤2.1.

Another aspect, this application discloses such a optical imaging lens, and the camera lens is along optical axis by object side to image side Sequentially it may include：First lens, the second lens, the third lens, the 4th lens.First lens can have positive light coke, object side Face can be convex surface；Second lens, which have positive light coke or negative power, object side, to be concave surface, and image side surface can be convex surface；The Three lens, which can have positive light coke, object side, to be concave surface, and image side surface can be convex surface；4th lens have positive light coke or negative Focal power.Photosensitive element on the effective half bore DT42 of maximum of the image side surface of 4th lens and the imaging surface of optical imaging lens The half ImgH of effective pixel area diagonal line length can meet 0.7 ＜ DT42/ImgH ＜ 1.

Another aspect, this application discloses such a optical imaging lens, and the camera lens is along optical axis by object side to image side Sequentially it may include：First lens, the second lens, the third lens, the 4th lens.First lens can have positive light coke, object side Face can be convex surface；Second lens, which have positive light coke or negative power, object side, to be concave surface, and image side surface can be convex surface；The Three lens, which can have positive light coke, object side, to be concave surface, and image side surface can be convex surface；4th lens have positive light coke or negative Focal power.The object side of the third lens and the intersection point of optical axis to the object side of the third lens maximum effective half bore vertex in light Distance SAG31 on axis can meet -1.3 ＜ SAG31/CT3 ＜ -0.7 with the third lens in the center thickness CT3 on optical axis.

Another aspect, this application discloses such a optical imaging lens, and the camera lens is along optical axis by object side to image side Sequentially it may include：First lens, the second lens, the third lens, the 4th lens.First lens can have positive light coke, object side Face can be convex surface；Second lens, which have positive light coke or negative power, object side, to be concave surface, and image side surface can be convex surface；The Three lens, which can have positive light coke, object side, to be concave surface, and image side surface can be convex surface；4th lens have positive light coke or negative Focal power.4th lens can meet 1.2 ＜ CT4/ET4 in the edge thickness ET4 of center thickness CT4 and the 4th lens on optical axis ＜ 2.4.

Another aspect, this application discloses such a optical imaging lens, and the camera lens is along optical axis by object side to image side Sequentially it may include：First lens, the second lens, the third lens, the 4th lens.First lens can have positive light coke, object side Face can be convex surface；Second lens, which have positive light coke or negative power, object side, to be concave surface, and image side surface can be convex surface；The Three lens, which can have positive light coke, object side, to be concave surface, and image side surface can be convex surface；4th lens have positive light coke or negative Focal power.Effective half bore of maximum of the effective half bore DT11 of maximum of the object side of first lens and the object side of the second lens DT21 can meet 1.0≤DT11/DT21 ＜ 1.3.

Another aspect, this application discloses such a optical imaging lens, and the camera lens is along optical axis by object side to image side Sequentially it may include：First lens, the second lens, the third lens, the 4th lens.First lens can have positive light coke, object side Face can be convex surface；Second lens, which have positive light coke or negative power, object side, to be concave surface, and image side surface can be convex surface；The Three lens, which can have positive light coke, object side, to be concave surface, and image side surface can be convex surface；4th lens have positive light coke or negative Focal power.Effective half bore of maximum of the effective half bore DT11 of maximum of the object side of first lens and the image side surface of the second lens DT22 can meet 0.8 ＜ DT11/DT22 ＜ 1.1.

Another aspect, this application discloses such a optical imaging lens, and the camera lens is along optical axis by object side to image side Sequentially it may include：First lens, the second lens, the third lens, the 4th lens.First lens can have positive light coke, object side Face can be convex surface；Second lens, which have positive light coke or negative power, object side, to be concave surface, and image side surface can be convex surface；The Three lens, which can have positive light coke, object side, to be concave surface, and image side surface can be convex surface；4th lens have positive light coke or negative Focal power.The effective half bore DT11 of maximum of the object side of first lens and the first lens can in the center thickness CT1 on optical axis Meet 1.7 ＜ DT11/CT1 ＜ 2.2.

Another aspect, this application discloses such a optical imaging lens, and the camera lens is along optical axis by object side to image side Sequentially it may include：First lens, the second lens, the third lens, the 4th lens.First lens can have positive light coke, object side Face can be convex surface；Second lens, which have positive light coke or negative power, object side, to be concave surface, and image side surface can be convex surface；The Three lens, which can have positive light coke, object side, to be concave surface, and image side surface can be convex surface；4th lens have positive light coke or negative Focal power.The spacing distance T34 and the second lens and the third lens of the third lens and the 4th lens on optical axis are on optical axis Spacing distance T23 can meet T34/T23 ＜ 0.2.

The application uses multi-disc (for example, four) lens, by each power of lens of reasonable distribution, face type, each Spacing etc. on axis between the center thickness of mirror and each lens so that above-mentioned optical imaging lens have miniaturization, small aberration, At least one advantageous effect such as high resolution.Also, it can preferably meet depth by the optical imaging lens of above-mentioned configuration Requirement in identification application to imaging receiver camera lens.

Description of the drawings

In conjunction with attached drawing, by the detailed description of following non-limiting embodiment, other features of the application, purpose and excellent Point will be apparent.In the accompanying drawings：

Fig. 1 shows the structural schematic diagram of the optical imaging lens according to the embodiment of the present application 1；

Fig. 2A and Fig. 2 B respectively illustrate the distortion curve and relative illumination curve of the optical imaging lens of embodiment 1；

Fig. 3 shows the structural schematic diagram of the optical imaging lens according to the embodiment of the present application 2；

Fig. 4 A and Fig. 4 B respectively illustrate the distortion curve and relative illumination curve of the optical imaging lens of embodiment 2；

Fig. 5 shows the structural schematic diagram of the optical imaging lens according to the embodiment of the present application 3；

Fig. 6 A and Fig. 6 B respectively illustrate the distortion curve and relative illumination curve of the optical imaging lens of embodiment 3；

Fig. 7 shows the structural schematic diagram of the optical imaging lens according to the embodiment of the present application 4；

Fig. 8 A and Fig. 8 B respectively illustrate the distortion curve and relative illumination curve of the optical imaging lens of embodiment 4；

Fig. 9 shows the structural schematic diagram of the optical imaging lens according to the embodiment of the present application 5；

Figure 10 A and Figure 10 B respectively illustrate the distortion curve and relative illumination curve of the optical imaging lens of embodiment 5；

Figure 11 shows the structural schematic diagram of the optical imaging lens according to the embodiment of the present application 6；

Figure 12 A and Figure 12 B respectively illustrate the distortion curve and relative illumination curve of the optical imaging lens of embodiment 6.

Specific implementation mode

Refer to the attached drawing is made more detailed description by the application in order to better understand to the various aspects of the application.It answers Understand, the description of the only illustrative embodiments to the application is described in detail in these, rather than limits the application in any way Range.In the specification, the identical element of identical reference numbers.It includes associated institute to state "and/or" Any and all combinations of one or more of list of items.

It should be noted that in the present specification, first, second, third, etc. statement is only used for a feature and another spy Sign distinguishes, and does not indicate that any restrictions to feature.Therefore, without departing substantially from teachings of the present application, hereinafter The first lens discussed are also known as the second lens or the third lens.

In the accompanying drawings, for convenience of description, thickness, the size and shape of lens are slightly exaggerated.Specifically, attached drawing Shown in spherical surface or aspherical shape be illustrated by way of example.That is, spherical surface or aspherical shape are not limited to attached drawing Shown in spherical surface or aspherical shape.Attached drawing is merely illustrative and and non-critical drawn to scale.

Herein, near axis area refers to the region near optical axis.If lens surface is convex surface and does not define convex surface position When setting, then it represents that the lens surface is convex surface near axis area is less than；If lens surface is concave surface and does not define the concave surface position When, then it represents that the lens surface is concave surface near axis area is less than.It is known as object side near the surface of object in each lens, It is known as image side surface near the surface of imaging surface in each lens.

It will also be appreciated that term " comprising ", " including ", " having ", "comprising" and/or " including ", when in this theory It indicates there is stated feature, element and/or component when being used in bright book, but does not preclude the presence or addition of one or more Other feature, component, assembly unit and/or combination thereof.In addition, ought the statement of such as at least one of " ... " appear in institute When after the list of row feature, entire listed feature is modified, rather than modifies the individual component in list.In addition, when describing this When the embodiment of application, " one or more embodiments of the application " are indicated using "available".Also, term " illustrative " It is intended to refer to example or illustration.

Unless otherwise defined, otherwise all terms (including technical terms and scientific words) used herein all have with The application one skilled in the art's is generally understood identical meaning.It will also be appreciated that term (such as in everyday words Term defined in allusion quotation) it should be interpreted as having the meaning consistent with their meanings in the context of the relevant technologies, and It will not be explained with idealization or excessively formal sense, unless clear herein so limit.

It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

The feature of the application, principle and other aspects are described in detail below.

Optical imaging lens according to the application illustrative embodiments include such as four lens with focal power, i.e., First lens, the second lens, the third lens and the 4th lens.This four lens along optical axis from object side to image side sequential. The optical imaging lens can also further comprise the photosensitive element for being set to imaging surface.

In the exemplary embodiment, the first lens can have positive light coke, and object side can be convex surface；Second lens have It can be concave surface to have positive light coke or negative power, object side, and image side surface can be convex surface；The third lens can have positive light coke, Its object side can be concave surface, and image side surface can be convex surface；4th lens have positive light coke or negative power.

In the exemplary embodiment, the optical imaging lens of the application may also include setting the 4th lens and optics at As camera lens imaging surface between infrared band pass filter, the band-pass wavelength λ of the infrared band pass filter can be based on using light source Wavelength floats, and when the transmitance of band-pass wavelength λ is more than 50%, and the long wave cut-off wavelength ratio of band-pass wavelength λ uses light source The short wavelength cutoff wavelength of longest the wavelength long 0nm to 30nm, band-pass wavelength λ of wavelength are than using the minimal wave length of optical source wavelength short 0nm to 30nm.Such setting is advantageously implemented small aberration, high resolution etc..With general camera lens use wave band different from, It the use of wave band can be infrared laser Single wavelength according to the imaging lens of the application, and narrower bandwidth.

When each power of lens knead dough type bumps arrangement is consistent with the combination that above-mentioned focal power knead dough type bumps are arranged When, each minute surface in imaging lens can uniformly share the function of aberration correction, so as to effectively correct spherical aberration, coma, field The aberrations such as song, astigmatism.Particularly, such setting can provide good rectification effect (for example, being big for marginal ray convergence The marginal ray convergence of the narrow wavestrip optical system of aperture provides good rectification effect), so as to make camera lens meet high-resolution The requirement of power.Meanwhile can be had in certain narrow-band low pass infrared band according to the imaging lens of above-mentioned setting good Image quality.

In the exemplary embodiment, the object side of the 4th lens can be convex surface, and image side surface can be concave surface.

In the exemplary embodiment, the optical imaging lens of the application can meet 1.2 ＜ f1/f ＜ 1.8 of conditional, In, f1 is the effective focal length of the first lens, and f is total effective focal length of optical imaging lens.More specifically, f1 and f further may be used Meet 1.20 ＜ f1/f ＜ 1.50, for example, 1.29≤f1/f≤1.42.The effective focal length of the first lens of reasonable disposition, Ke Yiyou The spherical aberration of effect ground correction camera lens, ensures high imaging quality.

In the exemplary embodiment, the optical imaging lens of the application can meet conditional f/EPD≤2.1, wherein f For total effective focal length of optical imaging lens, EPD is the Entry pupil diameters of optical imaging lens.More specifically, f and EPD are further 1.65≤f/EPD≤1.99 can be met.Meet conditional f/EPD≤2.1, camera lens can be made to have within the unit interval larger Light-inletting quantity, to meet the high brightness requirement to receiving image.

In the exemplary embodiment, the optical imaging lens of the application can meet 0.7 ＜ DT42/ImgH ＜ 1 of conditional, Wherein, DT42 is effective half bore of maximum of the image side surface of the 4th lens, and ImgH is photosensitive on the imaging surface of optical imaging lens The half of the effective pixel area diagonal line length of element.More specifically, DT42 and ImgH can further meet 0.78≤DT42/ ImgH≤0.94.Meet 0.7 ＜ DT42/ImgH ＜ 1 of conditional, is conducive to meet small form factor requirements, and simultaneously ensure higher Relative luminance.

In the exemplary embodiment, the optical imaging lens of the application can meet 0.9 ＜ R5/R6 ＜ 1.3 of conditional, In, R5 is the radius of curvature of the object side of the third lens, and R6 is the radius of curvature of the image side surface of the third lens.More specifically, R5 It can further meet 0.95≤R5/R6≤1.29 with R6.By the bending side for rationally controlling the third lens object side and image side surface To and bending degree, can effectively correct the curvature of field aberration of imaging system, ensure the picture in central vision region and peripheral field region Matter balances.

In the exemplary embodiment, the optical imaging lens of the application can meet -1.3 ＜ SAG31/CT3 ＜ of conditional - 0.7, wherein SAG31 be the third lens object side and optical axis intersection point to the object side of the third lens maximum it is effective half mouthful Distance of the diameter vertex on optical axis, CT3 are the third lens in the center thickness on optical axis.More specifically, SAG31 and CT3 is into one Step can meet -1.23≤SAG31/CT3≤- 0.80.Meet -1.3 ＜ -0.7 ＜ SAG31/CT3 of conditional, rectifiable imaging lens The spherical aberration aberration of head, to obtain higher image quality；Meanwhile the system sensitivity of camera lens can be effectively reduced, ensure camera lens With preferable production.

In the exemplary embodiment, the optical imaging lens of the application can meet 1.2 ＜ CT4/ET4 ＜ 2.4 of conditional, Wherein, CT4 is the 4th lens in the center thickness on optical axis, and ET4 is the edge thickness of the 4th lens.More specifically, CT4 and ET4 can further meet 1.29≤CT4/ET4≤2.36.Meet 1.2 ＜ CT4/ET4 ＜ 2.4 of conditional, by ensureing the 4th thoroughly The center thickness of the eyeglass of mirror and the rational proportion of edge thickness are very beneficial for that peripheral field is made to obtain larger amount of beam, To make camera lens that there is higher relative luminance.

In the exemplary embodiment, the optical imaging lens of the application can meet 1.0≤DT11/DT21 of conditional ＜ 1.3, wherein DT11 is effective half bore of maximum of the object side of the first lens, and DT21 is the maximum of the object side of the second lens Effective half bore.More specifically, DT11 and DT21 can further meet 1.0≤DT11/DT21 ＜ 1.2, for example, 1.04≤ DT11/DT21≤1.14.Meet 1.0≤DT11/DT21 of conditional ＜ 1.3, be conducive to lens assembling, ensures producing for camera lens Property.

In the exemplary embodiment, the optical imaging lens of the application can meet 0.8 ＜ DT11/DT22 ＜ of conditional 1.1, wherein DT11 is effective half bore of maximum of the object side of the first lens, and DT22 is the maximum of the image side surface of the second lens Effective half bore.More specifically, DT11 and DT22 can further meet 0.8 ＜ DT11/DT22 ＜ 1.0, for example, 0.83≤ DT11/DT22≤0.94.Meet 0.8 ＜ DT11/DT22 ＜ 1.1 of conditional, is conducive to that each lens outer diameter is made to keep uniform increments Gradient ensures the machinability of camera lens to be conducive to lens assembling.

In the exemplary embodiment, the optical imaging lens of the application can meet 0.4 ＜ CT2/CT3 ＜ 0.7 of conditional, Wherein, for the second lens of CT2 in the center thickness on optical axis, CT3 is the third lens in the center thickness on optical axis.More specifically, CT2 and CT3 can further meet 0.5 ＜ CT2/CT3 ＜ 0.7, for example, 0.53≤CT2/CT3≤0.64.Meet conditional 0.4 ＜ CT2/CT3 ＜ 0.7 are conducive to the curvature of field aberration for preferably correcting meridian direction；Meanwhile imaging system can be efficiently controlled Astigmatic image error, to obtain higher image quality.

In the exemplary embodiment, the optical imaging lens of the application can meet 0.1 ＜ T12/TTL ＜ 0.2 of conditional, Wherein, T12 be the spacing distance of the first lens and the second lens on optical axis, TTL be the first lens object side to optics at As spacing distance of the imaging surface on optical axis of camera lens.More specifically, T12 and TTL can further meet 0.13≤T12/TTL≤ 0.14.Meet 0.1 ＜ T12/TTL ＜ 0.2 of conditional, can preferably eliminate the coma of imaging system, obtain higher imaging Quality.

In the exemplary embodiment, the optical imaging lens of the application can meet 1.7 ＜ DT11/CT1 ＜ of conditional 2.2, wherein DT11 is effective half bore of maximum of the object side of the first lens, and CT1 is that the first lens are thick in the center on optical axis Degree.More specifically, DT11 and CT1 can further meet 1.74≤DT11/CT1≤2.02.Meet 1.7 ＜ DT11/CT1 of conditional ＜ 2.2 can preferably eliminate the spherical aberration aberration of imaging system, obtain higher image quality.

In the exemplary embodiment, the optical imaging lens of the application can meet conditional T34/T23 ＜ 0.2, wherein T34 is the spacing distance of the third lens and the 4th lens on optical axis, T23 be the second lens and the third lens on optical axis between Gauge from.More specifically, T34 and T23 can further meet 0.09≤T34/T23≤0.17.The second lens of reasonable Arrangement, third Airspace between lens and the 4th lens can make the second lens and the third lens rationally share spherical aberration correction, to obtain Obtain high quality imaging effect.

In the exemplary embodiment, the optical imaging lens of the application can meet 0.2 ＜ ∑ CT/TTL ＜ of conditional 0.5, wherein ∑ CT be the first lens, the second lens, the third lens and the 4th lens respectively at the center thickness on optical axis it With the spacing distance of the imaging surface of object side that, TTL is the first lens to optical imaging lens on optical axis.More specifically, ∑ CT and TTL can further meet 0.3 ＜ ∑ CT/TTL ＜ 0.5, for example, 0.38≤∑ CT/TTL≤0.46.Meet conditional 0.2 ＜ ∑ CT/TTL ＜ 0.5, can preferably correct the aberration of the outer field of view of imaging system axle, while advantageously allow each eyeglass tool There is preferable machinability.

In the exemplary embodiment, the optical imaging lens of the application can meet 0.3 ＜ R1/f ＜ 0.7 of conditional, In, R1 is the radius of curvature of the object side of the first lens, and f is total effective focal length of optical imaging lens.More specifically, R1 and f 0.5 ＜ R1/f ＜ 0.6 can further be met, for example, 0.52≤R1/f≤0.59.Meet 0.3 ＜ R1/f ＜ 0.7 of conditional, it can Preferably to correct the aberration of field of view outside system axle, ensure the high resolution in central vision region；Meanwhile being conducive to obtain Larger lens aperture.

In the exemplary embodiment, the optical imaging lens of the application can meet 0.3 ＜ R1/f1 ＜ 0.6 of conditional, In, R1 is the radius of curvature of the object side of the first lens, and f1 is the effective focal length of the first lens.More specifically, R1 and f1 is into one Step can meet 0.3 ＜ R1/f1 ＜ 0.5, for example, 0.39≤R1/f1≤0.42.Meet 0.3 ＜ R1/f1 ＜ 0.6 of conditional, it can be with The spherical aberration for preferably correcting imaging system is conducive to the imaging effect for obtaining high quality.

In the exemplary embodiment, above-mentioned optical imaging lens may also include at least one diaphragm, to promote camera lens Image quality.Diaphragm can be arranged as required to locate at an arbitrary position, for example, diaphragm may be provided between object side and the first lens, Alternatively, diaphragm can also be provided between the first lens and the second lens.

Optionally, above-mentioned optical imaging lens may also include the protection glass for protecting the photosensitive element being located on imaging surface Glass.

Multi-disc eyeglass, such as described above four can be used according to the optical imaging lens of the above embodiment of the application Piece.By each power of lens of reasonable distribution, face type, each lens center thickness and each lens between axis on spacing Deng can effectively reduce the volume of imaging lens, reduce the susceptibility of imaging lens and improve the machinabilitys of imaging lens, make Optical imaging lens are obtained to be more advantageous to production and processing and be applicable to miniaturized electronics.Meanwhile passing through the light of above-mentioned configuration Learning imaging lens also has the advantageous effect such as small aberration, high resolution, and it is right in depth recognition application to meet well The requirement of imaging receiver camera lens.

In presently filed embodiment, at least one of minute surface of each lens is aspherical mirror.Non-spherical lens The characteristics of be：From lens centre to lens perimeter, curvature is consecutive variations.It is constant with having from lens centre to lens perimeter The spherical lens of curvature is different, and non-spherical lens has more preferably radius of curvature characteristic, and there is improvement to distort aberration and improve picture The advantages of dissipating aberration.After non-spherical lens, the aberration occurred when imaging can be eliminated as much as possible, so as to improve Image quality.

However, it will be understood by those of skill in the art that without departing from this application claims technical solution the case where Under, the lens numbers for constituting optical imaging lens can be changed, to obtain each result and advantage described in this specification.Example Such as, although being described by taking four lens as an example in embodiments, which is not limited to include four Lens.If desired, the optical imaging lens may also include the lens of other quantity.

The specific embodiment for the optical imaging lens for being applicable to the above embodiment is further described with reference to the accompanying drawings.

Embodiment 1

Referring to Fig. 1 to Fig. 2 B descriptions according to the optical imaging lens of the embodiment of the present application 1.Fig. 1 is shown according to this Apply for the structural schematic diagram of the optical imaging lens of embodiment 1.

As shown in Figure 1, can by object side to image side along optical axis according to the optical imaging lens of the application illustrative embodiments Include sequentially：First lens E1, diaphragm STO, the second lens E2, the third lens E3, the 4th lens E4, optical filter E5 and imaging surface S11.Optical imaging lens may also include the photosensitive element for being set to imaging surface S11.

It is convex surface that first lens E1, which has positive light coke, object side S1, and image side surface S2 is concave surface.Second lens E2 has Negative power, object side S3 are concave surface, and image side surface S4 is convex surface.The third lens E3 has positive light coke, and object side S5 is Concave surface, image side surface S6 are convex surface.It is convex surface that 4th lens E4, which has negative power, object side S7, and image side surface S8 is concave surface.

Optical filter E5 can be infrared band pass filter, with object side S9 and image side surface S10.The band logical wave of optical filter E5 Long λ can be based on floating using optical source wavelength, and when the transmitance of band-pass wavelength λ is more than 50%, and the long wave of band-pass wavelength λ is cut Only for wavelength than using the longest wavelength of optical source wavelength long 0nm to 30nm, the short wavelength cutoff wavelength ratio of band-pass wavelength λ uses light source wave Long minimal wave length short 0nm to 30nm.

Light from object sequentially passes through each surface S1 to S10 and is ultimately imaged on imaging surface S11.

Table 1 show the surface types of each lens of the optical imaging lens of embodiment 1, radius of curvature, thickness, material and Circular cone coefficient, wherein radius of curvature and the unit of thickness are millimeter (mm).

Table 1

As shown in Table 1, the object side of any one lens in the first lens E1 to the 4th lens E4 and image side surface are It is aspherical.In the present embodiment, the face type x of each non-spherical lens is available but is not limited to following aspherical formula and is defined：

Wherein, x be it is aspherical along optical axis direction when being highly the position of h, away from aspheric vertex of surface apart from rise；C is Aspherical paraxial curvature, c=1/R (that is, paraxial curvature c is the inverse of 1 mean curvature radius R of upper table)；K be circular cone coefficient ( It has been provided in table 1)；Ai is the correction factor of aspherical i-th-th ranks.The following table 2 give can be used for it is each aspherical in embodiment 1 The high-order coefficient A of minute surface S1-S8₄、A₆、A₈、A₁₀、A₁₂、A₁₄And A₁₆。

Face number

A4

A6

A8

A10

A12

A14

A16

S1

5.4245E-03

-1.0041E-01

1.2427E+00

-5.8561E+00

1.2857E+01

-1.3611E+01

5.3755E+00

S2

-6.2944E-02

2.0953E-02

-1.6610E+00

9.0631E+00

-2.5445E+01

3.4154E+01

-1.8264E+01

S3

-1.5221E-01

-7.4008E-01

1.6603E+00

-5.4391E+00

1.4329E+01

-2.6241E+01

2.0370E+01

S4

-3.0623E-02

-2.1759E-01

-2.0148E+00

8.9557E+00

-1.7477E+01

1.6545E+01

-5.9010E+00

S5

7.2130E-01

-2.0229E+00

3.3343E+00

-3.9645E+00

5.6109E+00

-5.1050E+00

1.7554E+00

S6

-1.3583E-01

-9.1099E-01

4.0056E+00

-9.5078E+00

1.2635E+01

-8.2627E+00

2.0973E+00

S7

-4.6117E-01

4.6443E-01

-3.8262E-01

2.2156E-01

-8.1472E-02

1.6596E-02

-1.3960E-03

S8

-1.0127E-01

2.2482E-02

1.1127E-02

-1.7628E-02

8.9352E-03

-2.2018E-03

2.1299E-04

Table 2

Table 3 provide the effective focal length f1 to f4 of each lens in embodiment 1, optical imaging lens total effective focal length f and The half ImgH of the effective pixel area diagonal line length of photosensitive element on imaging surface.

Parameter	f1(mm)	f2(mm)	f3(mm)	f4(mm)	f(mm)	ImgH(mm)
							Numerical value	3.72	-12062.21	4.35	-13.65	2.70	2.27

Table 3

Optical imaging lens in embodiment 1 meet：

F1/f=1.38, wherein f1 is the effective focal length of the first lens E1, and f is total effective focal length of optical imaging lens；

F/EPD=1.70, wherein f is total effective focal length of optical imaging lens, and EPD is the entrance pupil of optical imaging lens Diameter；

DT42/ImgH=0.78, wherein effective half bore of maximum that DT42 is the image side surface S8 of the 4th lens E4, ImgH For the half of the effective pixel area diagonal line length of photosensitive element on imaging surface S11；

R5/R6=1.08, wherein R5 is the radius of curvature of the object side S5 of the third lens E3, and R6 is the third lens E3's The radius of curvature of image side surface S6；

SAG31/CT3=-0.82, wherein the intersection point of object side S5 and optical axis that SAG31 is the third lens E3 are saturating to third Distance of the maximum effective half bore vertex of the object side S5 of mirror E3 on optical axis, CT3 is the third lens E3 on optical axis Heart thickness；

CT4/ET4=1.55, wherein CT4 is the 4th lens E4 in the center thickness on optical axis, and ET4 is the 4th lens E4 Edge thickness；

DT11/DT21=1.12, wherein effective half bore of maximum that DT11 is the object side S1 of the first lens E1, DT21 For effective half bore of maximum of the object side S3 of the second lens E2；

DT11/DT22=0.94, wherein effective half bore of maximum that DT11 is the object side S1 of the first lens E1, DT22 For effective half bore of maximum of the image side surface S4 of the second lens E2；

CT2/CT3=0.56, wherein CT2 the second lens E2 in the center thickness on optical axis, CT3 be the third lens E3 in Center thickness on optical axis；

T12/TTL=0.13, wherein T12 is the spacing distance of the first lens E1 and the second lens E2 on optical axis, TTL For spacing distances of the object side S1 to imaging surface S11 on optical axis of the first lens E1；

DT11/CT1=1.87, wherein effective half bore of maximum that DT11 is the object side S1 of the first lens E1, CT1 are First lens E1 is in the center thickness on optical axis；

T34/T23=0.16, wherein T34 is the spacing distance of the third lens E3 and the 4th lens E4 on optical axis, T23 For the spacing distance of the second lens E2 and the third lens E3 on optical axis；

∑ CT/TTL=0.38, wherein ∑ CT is the first lens E1, the second lens E2, the third lens E3 and the 4th lens E4 is respectively at the sum of the center thickness on optical axis, between object side S1 to imaging surface S11 that TTL is the first lens E1 is on optical axis Gauge from；

R1/f=0.54, wherein R1 is the radius of curvature of the object side S1 of the first lens E1, and f is optical imaging lens Total effective focal length；

R1/f1=0.39, wherein R1 is the radius of curvature of the object side S1 of the first lens E1, and f1 is the first lens E1's Effective focal length.

Fig. 2A shows the distortion curve of the optical imaging lens of embodiment 1, indicates the distortion in the case of different visual angles Sizes values.Fig. 2 B show the relative illumination curve of the optical imaging lens of embodiment 1, and institute is right in the case of indicating different visual angles The relative illumination answered.A and Fig. 2 B are it is found that the optical imaging lens given by embodiment 1 can realize good imaging according to fig. 2 Quality.

Embodiment 2

Referring to Fig. 3 to Fig. 4 B descriptions according to the optical imaging lens of the embodiment of the present application 2.In the present embodiment and following In embodiment, for brevity, by clipped description similar to Example 1.Fig. 3 is shown according to the embodiment of the present application 2 Optical imaging lens structural schematic diagram.

As shown in figure 3, can by object side to image side along optical axis according to the optical imaging lens of the application illustrative embodiments Include sequentially：First lens E1, diaphragm STO, the second lens E2, the third lens E3, the 4th lens E4, optical filter E5 and imaging surface S11.Optical imaging lens may also include the photosensitive element for being set to imaging surface S11.

It is convex surface that first lens E1, which has positive light coke, object side S1, and image side surface S2 is concave surface.Second lens E2 has Positive light coke, object side S3 are concave surface, and image side surface S4 is convex surface.The third lens E3 has positive light coke, and object side S5 is Concave surface, image side surface S6 are convex surface.It is convex surface that 4th lens E4, which has negative power, object side S7, and image side surface S8 is concave surface.

Optical filter E5 can be infrared band pass filter, with object side S9 and image side surface S10.The band logical wave of optical filter E5 Long λ can be based on floating using optical source wavelength, and when the transmitance of band-pass wavelength λ is more than 50%, and the long wave of band-pass wavelength λ is cut Only for wavelength than using the longest wavelength of optical source wavelength long 0nm to 30nm, the short wavelength cutoff wavelength ratio of band-pass wavelength λ uses light source wave Long minimal wave length short 0nm to 30nm.

Light from object sequentially passes through each surface S1 to S10 and is ultimately imaged on imaging surface S11.

Table 4 show the surface types of each lens of the optical imaging lens of embodiment 2, radius of curvature, thickness, material and Circular cone coefficient, wherein radius of curvature and the unit of thickness are millimeter (mm).

Table 4

As shown in Table 4, in example 2, the object side of any one lens in the first lens E1 to the 4th lens E4 It is aspherical with image side surface.Table 5 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 2, wherein each non- Spherical surface type can be limited by the formula (1) provided in above-described embodiment 1.

Face number

A4

A6

A8

A10

A12

A14

A16

S1

7.4569E-03

-9.5613E-02

1.2423E+00

-5.8623E+00

1.2847E+01

-1.3603E+01

5.4441E+00

S2

-5.5338E-02

2.4126E-02

-1.6594E+00

9.0961E+00

-2.5489E+01

3.4167E+01

-1.8281E+01

S3

-1.4774E-01

-7.2162E-01

1.6565E+00

-5.4087E+00

1.4357E+01

-2.6295E+01

2.0055E+01

S4

-2.7785E-02

-2.1709E-01

-2.0157E+00

8.9262E+00

-1.7485E+01

1.6568E+01

-5.8516E+00

S5

7.2333E-01

-2.0252E+00

3.3328E+00

-3.9654E+00

5.6100E+00

-5.1002E+00

1.7628E+00

S6

-1.3423E-01

-9.0526E-01

4.0062E+00

-9.5217E+00

1.2650E+01

-8.2701E+00

2.0948E+00

S7

-4.6097E-01

4.6392E-01

-3.8274E-01

2.2160E-01

-8.1453E-02

1.6599E-02

-1.3968E-03

S8

-1.0023E-01

2.1762E-02

1.1125E-02

-1.7621E-02

8.9432E-03

-2.2004E-03

2.1301E-04

Table 5

Table 6 provide the effective focal length f1 to f4 of each lens in embodiment 2, optical imaging lens total effective focal length f and The half ImgH of the effective pixel area diagonal line length of photosensitive element on imaging surface.

Parameter	f1(mm)	f2(mm)	f3(mm)	f4(mm)	f(mm)	ImgH(mm)
							Numerical value	3.74	97.78	4.71	-16.54	2.68	2.27

Table 6

Fig. 4 A show the distortion curve of the optical imaging lens of embodiment 2, indicate the distortion in the case of different visual angles Sizes values.Fig. 4 B show the relative illumination curve of the optical imaging lens of embodiment 2, and institute is right in the case of indicating different visual angles The relative illumination answered.According to Fig. 4 A and Fig. 4 B it is found that the optical imaging lens given by embodiment 2 can realize good imaging Quality.

Embodiment 3

The optical imaging lens according to the embodiment of the present application 3 are described referring to Fig. 5 to Fig. 6 B.Fig. 5 shows basis The structural schematic diagram of the optical imaging lens of the embodiment of the present application 3.

As shown in figure 5, can by object side to image side along optical axis according to the optical imaging lens of the application illustrative embodiments Include sequentially：First lens E1, diaphragm STO, the second lens E2, the third lens E3, the 4th lens E4, optical filter E5 and imaging surface S11.Optical imaging lens may also include the photosensitive element for being set to imaging surface S11.

It is convex surface that first lens E1, which has positive light coke, object side S1, and image side surface S2 is concave surface.Second lens E2 has Negative power, object side S3 are concave surface, and image side surface S4 is convex surface.The third lens E3 has positive light coke, and object side S5 is Concave surface, image side surface S6 are convex surface.It is convex surface that 4th lens E4, which has positive light coke, object side S7, and image side surface S8 is concave surface.

Optical filter E5 can be infrared band pass filter, with object side S9 and image side surface S10.The band logical wave of optical filter E5 Long λ can be based on floating using optical source wavelength, and when the transmitance of band-pass wavelength λ is more than 50%, and the long wave of band-pass wavelength λ is cut Only for wavelength than using the longest wavelength of optical source wavelength long 0nm to 30nm, the short wavelength cutoff wavelength ratio of band-pass wavelength λ uses light source wave Long minimal wave length short 0nm to 30nm.

Light from object sequentially passes through each surface S1 to S10 and is ultimately imaged on imaging surface S11.

Table 7 show the surface types of each lens of the optical imaging lens of embodiment 3, radius of curvature, thickness, material and Circular cone coefficient, wherein radius of curvature and the unit of thickness are millimeter (mm).

Table 7

As shown in Table 7, in embodiment 3, the object side of any one lens in the first lens E1 to the 4th lens E4 It is aspherical with image side surface.Table 8 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 3, wherein each non- Spherical surface type can be limited by the formula (1) provided in above-described embodiment 1.

Face number

A4

A6

A8

A10

A12

A14

A16

S1

-6.6540E-03

-1.8292E-02

3.9677E-01

-3.1421E+00

8.5995E+00

-1.1053E+01

5.2538E+00

S2

-4.1259E-03

-1.4651E+00

1.1714E+01

-5.4758E+01

1.3997E+02

-1.8591E+02

1.0002E+02

S3

-2.2706E-01

-5.8956E-02

-2.7092E+00

1.4086E+01

-3.5542E+01

4.3923E+01

-1.9934E+01

S4

-7.9000E-02

-1.5715E-01

-1.5687E+00

7.0711E+00

-1.4368E+01

1.4449E+01

-5.5058E+00

S5

6.8075E-01

-1.5533E+00

2.2973E+00

-2.2530E+00

1.4744E+00

-1.2067E-01

-2.8310E-01

S6

-1.6318E-01

-1.5158E-01

6.9222E-01

-1.6343E+00

2.1927E+00

-1.3610E+00

3.0994E-01

S7

-2.5669E-01

1.7332E-01

-8.5329E-02

2.7910E-02

-5.9548E-03

7.4489E-04

-4.1371E-05

S8

-5.4670E-02

2.5672E-02

-7.7073E-03

1.9548E-03

-5.0207E-04

8.0995E-05

-5.3194E-06

Table 8

Table 9 provide the effective focal length f1 to f4 of each lens in embodiment 3, optical imaging lens total effective focal length f and The half ImgH of the effective pixel area diagonal line length of photosensitive element on imaging surface.

Parameter	f1(mm)	f2(mm)	f3(mm)	f4(mm)	f(mm)	ImgH(mm)
							Numerical value	3.94	-49.06	7.57	68.33	2.81	2.27

Table 9

Fig. 6 A show the distortion curve of the optical imaging lens of embodiment 3, indicate the distortion in the case of different visual angles Sizes values.Fig. 6 B show the relative illumination curve of the optical imaging lens of embodiment 3, and institute is right in the case of indicating different visual angles The relative illumination answered.According to Fig. 6 A and Fig. 6 B it is found that the optical imaging lens given by embodiment 3 can realize good imaging Quality.

Embodiment 4

The optical imaging lens according to the embodiment of the present application 4 are described referring to Fig. 7 to Fig. 8 B.Fig. 7 shows basis The structural schematic diagram of the optical imaging lens of the embodiment of the present application 4.

As shown in fig. 7, can by object side to image side along optical axis according to the optical imaging lens of the application illustrative embodiments Include sequentially：First lens E1, diaphragm STO, the second lens E2, the third lens E3, the 4th lens E4, optical filter E5 and imaging surface S11.Optical imaging lens may also include the photosensitive element for being set to imaging surface S11.

It is convex surface that first lens E1, which has positive light coke, object side S1, and image side surface S2 is concave surface.Second lens E2 has Negative power, object side S3 are concave surface, and image side surface S4 is convex surface.The third lens E3 has positive light coke, and object side S5 is Concave surface, image side surface S6 are convex surface.It is convex surface that 4th lens E4, which has negative power, object side S7, and image side surface S8 is concave surface.

Optical filter E5 can be infrared band pass filter, with object side S9 and image side surface S10.The band logical wave of optical filter E5 Long λ can be based on floating using optical source wavelength, and when the transmitance of band-pass wavelength λ is more than 50%, and the long wave of band-pass wavelength λ is cut Only for wavelength than using the longest wavelength of optical source wavelength long 0nm to 30nm, the short wavelength cutoff wavelength ratio of band-pass wavelength λ uses light source wave Long minimal wave length short 0nm to 30nm.

Light from object sequentially passes through each surface S1 to S10 and is ultimately imaged on imaging surface S11.

Table 10 shows surface type, radius of curvature, thickness, the material of each lens of the optical imaging lens of embodiment 4 And circular cone coefficient, wherein radius of curvature and the unit of thickness are millimeter (mm).

Table 10

As shown in Table 10, in example 4, the object side of any one lens in the first lens E1 to the 4th lens E4 It is aspherical with image side surface.Table 11 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 4, wherein each Aspherical face type can be limited by the formula (1) provided in above-described embodiment 1.

Face number

A4

A6

A8

A10

A12

A14

A16

S1

9.4183E-04

-3.5073E-02

5.2869E-01

-3.8901E+00

1.0735E+01

-1.4059E+01

6.8164E+00

S2

-2.7337E-02

-1.2398E+00

9.9925E+00

-4.8582E+01

1.2862E+02

-1.7718E+02

9.8971E+01

S3

-3.0312E-01

3.9173E-01

-7.4034E+00

3.7322E+01

-9.8884E+01

1.3136E+02

-6.7044E+01

S4

-1.7138E-01

3.4065E-01

-4.6902E+00

1.7696E+01

-3.5223E+01

3.5846E+01

-1.4146E+01

S5

6.2725E-01

-1.0040E+00

-8.9468E-02

3.0021E+00

-5.1823E+00

5.0135E+00

-2.2328E+00

S6

-2.2745E-01

-1.3536E-01

1.3259E+00

-4.2857E+00

6.6259E+00

-4.6342E+00

1.1988E+00

S7

-2.4370E-01

1.2828E-01

-4.8259E-02

1.2012E-02

-1.9278E-03

1.6214E-04

-4.4763E-06

S8

-4.3387E-02

6.3912E-03

9.4708E-04

1.9733E-04

-3.3284E-04

6.7515E-05

-4.3916E-06

Table 11

Table 12 provide the effective focal length f1 to f4 of each lens in embodiment 4, optical imaging lens total effective focal length f and The half ImgH of the effective pixel area diagonal line length of photosensitive element on imaging surface.

Parameter	f1(mm)	f2(mm)	f3(mm)	f4(mm)	f(mm)	ImgH(mm)
							Numerical value	3.80	-53.80	4.36	-12.90	2.77	2.27

Table 12

Fig. 8 A show the distortion curve of the optical imaging lens of embodiment 4, indicate the distortion in the case of different visual angles Sizes values.Fig. 8 B show the relative illumination curve of the optical imaging lens of embodiment 4, and institute is right in the case of indicating different visual angles The relative illumination answered.According to Fig. 8 A and Fig. 8 B it is found that the optical imaging lens given by embodiment 4 can realize good imaging Quality.

Embodiment 5

The optical imaging lens according to the embodiment of the present application 5 are described referring to Fig. 9 to Figure 10 B.Fig. 9 shows basis The structural schematic diagram of the optical imaging lens of the embodiment of the present application 5.

As shown in figure 9, can by object side to image side along optical axis according to the optical imaging lens of the application illustrative embodiments Include sequentially：First lens E1, diaphragm STO, the second lens E2, the third lens E3, the 4th lens E4, optical filter E5 and imaging surface S11.Optical imaging lens may also include the photosensitive element for being set to imaging surface S11.

It is convex surface that first lens E1, which has positive light coke, object side S1, and image side surface S2 is concave surface.Second lens E2 has Negative power, object side S3 are concave surface, and image side surface S4 is convex surface.The third lens E3 has positive light coke, and object side S5 is Concave surface, image side surface S6 are convex surface.It is convex surface that 4th lens E4, which has negative power, object side S7, and image side surface S8 is concave surface.

Optical filter E5 can be infrared band pass filter, with object side S9 and image side surface S10.The band logical wave of optical filter E5 Long λ can be based on floating using optical source wavelength, and when the transmitance of band-pass wavelength λ is more than 50%, and the long wave of band-pass wavelength λ is cut Only for wavelength than using the longest wavelength of optical source wavelength long 0nm to 30nm, the short wavelength cutoff wavelength ratio of band-pass wavelength λ uses light source wave Long minimal wave length short 0nm to 30nm.

Light from object sequentially passes through each surface S1 to S10 and is ultimately imaged on imaging surface S11.

Table 13 shows surface type, radius of curvature, thickness, the material of each lens of the optical imaging lens of embodiment 5 And circular cone coefficient, wherein radius of curvature and the unit of thickness are millimeter (mm).

Table 13

As shown in Table 13, in embodiment 5, the object side of any one lens in the first lens E1 to the 4th lens E4 It is aspherical with image side surface.Table 14 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 5, wherein each Aspherical face type can be limited by the formula (1) provided in above-described embodiment 1.

Face number

A4

A6

A8

A10

A12

A14

A16

S1

1.5643E-02

-6.6412E-02

3.4933E-01

-1.8155E+00

4.6126E+00

-6.1251E+00

2.9083E+00

S2

-2.2144E-02

-1.0903E+00

8.5800E+00

-4.0149E+01

1.0045E+02

-1.3113E+02

6.9759E+01

S3

-2.8882E-01

-2.0277E+00

1.4982E+01

-7.1774E+01

1.9034E+02

-2.6342E+02

1.4905E+02

S4

-1.8329E-01

-3.4262E-01

3.1534E+00

-1.2086E+01

2.3569E+01

-2.5933E+01

1.2223E+01

S5

3.8320E-01

1.1536E-01

-2.0929E+00

9.2979E+00

-2.0230E+01

1.9235E+01

-6.4185E+00

S6

-8.6310E-01

2.2750E+00

-4.4435E+00

5.6282E+00

-4.3352E+00

1.9913E+00

-4.2489E-01

S7

-2.0947E-01

1.4998E-01

-1.4562E-01

1.0252E-01

-4.1373E-02

8.5910E-03

-7.1240E-04

S8

-8.9843E-02

5.2557E-02

-4.0914E-02

1.9341E-02

-4.8819E-03

5.4653E-04

-1.7023E-05

Table 14

Table 15 provide the effective focal length f1 to f4 of each lens in embodiment 5, optical imaging lens total effective focal length f and The half ImgH of the effective pixel area diagonal line length of photosensitive element on imaging surface.

Parameter	f1(mm)	f2(mm)	f3(mm)	f4(mm)	f(mm)	ImgH(mm)
							Numerical value	3.61	-11.46	2.76	-6.25	2.79	2.40

Table 15

Figure 10 A show the distortion curve of the optical imaging lens of embodiment 5, indicate the distortion in the case of different visual angles Sizes values.Figure 10 B show the relative illumination curve of the optical imaging lens of embodiment 5, indicate institute in the case of different visual angles Corresponding relative illumination.According to Figure 10 A and Figure 10 B it is found that the optical imaging lens given by embodiment 5 can realize it is good Image quality.

Embodiment 6

The optical imaging lens according to the embodiment of the present application 6 are described referring to Figure 11 to Figure 12 B.Figure 11 shows root According to the structural schematic diagram of the optical imaging lens of the embodiment of the present application 6.

It as shown in figure 11, can by object side to image side along optical axis according to the optical imaging lens of the application illustrative embodiments Include sequentially：Diaphragm STO, the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, optical filter E5 and imaging surface S11.Optical imaging lens may also include the photosensitive element for being set to imaging surface S11.

It is convex surface that first lens E1, which has positive light coke, object side S1, and image side surface S2 is concave surface.Second lens E2 has Negative power, object side S3 are concave surface, and image side surface S4 is convex surface.The third lens E3 has positive light coke, and object side S5 is Concave surface, image side surface S6 are convex surface.It is convex surface that 4th lens E4, which has positive light coke, object side S7, and image side surface S8 is concave surface.

Optical filter E5 can be infrared band pass filter, with object side S9 and image side surface S10.The band logical wave of optical filter E5 Long λ can be based on floating using optical source wavelength, and when the transmitance of band-pass wavelength λ is more than 50%, and the long wave of band-pass wavelength λ is cut Only for wavelength than using the longest wavelength of optical source wavelength long 0nm to 30nm, the short wavelength cutoff wavelength ratio of band-pass wavelength λ uses light source wave Long minimal wave length short 0nm to 30nm.

Light from object sequentially passes through each surface S1 to S10 and is ultimately imaged on imaging surface S11.

Table 16 shows surface type, radius of curvature, thickness, the material of each lens of the optical imaging lens of embodiment 6 And circular cone coefficient, wherein radius of curvature and the unit of thickness are millimeter (mm).

Table 16

As shown in Table 16, in embodiment 6, the object side of any one lens in the first lens E1 to the 4th lens E4 It is aspherical with image side surface.Table 17 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 6, wherein each Aspherical face type can be limited by the formula (1) provided in above-described embodiment 1.

Face number

A4

A6

A8

A10

A12

A14

A16

S1

-2.4371E-03

-3.1302E-02

4.6580E-01

-3.6093E+00

1.0166E+01

-1.3522E+01

6.6493E+00

S2

9.6619E-03

-1.7812E+00

1.4552E+01

-6.8614E+01

1.7681E+02

-2.3653E+02

1.2810E+02

S3

-2.2091E-01

-1.5921E-01

-2.1990E+00

1.2900E+01

-3.4628E+01

4.4338E+01

-2.0629E+01

S4

-6.6381E-02

-4.0008E-01

-2.3453E-01

3.2551E+00

-8.0750E+00

9.0148E+00

-3.6455E+00

S5

7.0116E-01

-1.7113E+00

2.7923E+00

-3.3593E+00

3.3215E+00

-1.8483E+00

3.5374E-01

S6

-1.3311E-01

-2.1826E-01

7.0138E-01

-1.4699E+00

1.9116E+00

-1.1640E+00

2.5946E-01

S7

-2.5052E-01

1.5252E-01

-6.7842E-02

2.0155E-02

-4.0278E-03

4.9041E-04

-2.7403E-05

S8

-2.2718E-02

-1.1304E-02

1.4416E-02

-5.6724E-03

1.0070E-03

-7.8007E-05

1.6200E-06

Table 17

Table 18 provide the effective focal length f1 to f4 of each lens in embodiment 6, optical imaging lens total effective focal length f and The half ImgH of the effective pixel area diagonal line length of photosensitive element on imaging surface.

Parameter	f1(mm)	f2(mm)	f3(mm)	f4(mm)	f(mm)	ImgH(mm)
							Numerical value	3.97	-46.65	9.44	20.59	2.80	2.40

Table 18

Figure 12 A show the distortion curve of the optical imaging lens of embodiment 6, indicate the distortion in the case of different visual angles Sizes values.Figure 12 B show the relative illumination curve of the optical imaging lens of embodiment 6, indicate institute in the case of different visual angles Corresponding relative illumination.According to Figure 12 A and Figure 12 B it is found that the optical imaging lens given by embodiment 6 can realize it is good Image quality.

To sum up, embodiment 1 to embodiment 6 meets relationship shown in table 19 respectively.

Table 19

The application also provides a kind of imaging device, and electronics photosensitive element can be photosensitive coupling element (CCD) or complementation Property matal-oxide semiconductor element (CMOS).Imaging device can be the independent imaging equipment of such as digital camera, can also be The image-forming module being integrated on the mobile electronic devices such as mobile phone.The imaging device is equipped with optical imaging lens described above Head.

Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.People in the art Member should be appreciated that invention scope involved in the application, however it is not limited to technology made of the specific combination of above-mentioned technical characteristic Scheme, while should also cover in the case where not departing from the inventive concept, it is carried out by above-mentioned technical characteristic or its equivalent feature Other technical solutions of arbitrary combination and formation.Such as features described above has similar work(with (but not limited to) disclosed herein Can technical characteristic replaced mutually and the technical solution that is formed.

Claims (32)

1. optical imaging lens include sequentially by object side to image side along optical axis：First lens, the second lens, the third lens, Four lens, which is characterized in that

It is convex surface that first lens, which have positive light coke, object side,；

It is concave surface that second lens, which have positive light coke or negative power, object side, and image side surface is convex surface；

It is concave surface that the third lens, which have positive light coke, object side, and image side surface is convex surface；

4th lens have positive light coke or negative power；

The effective focal length f1 of first lens meets 1.2 ＜ f1/f ＜ with total effective focal length f of the optical imaging lens 1.8。

2. optical imaging lens according to claim 1, which is characterized in that the optical imaging lens further include being set to Infrared band pass filter between 4th lens and the imaging surface of the optical imaging lens,

The band-pass wavelength λ of the infrared band pass filter is based on floating using optical source wavelength, and works as the saturating of the band-pass wavelength λ When crossing rate more than 50%, the long wave cut-off wavelength of the band-pass wavelength λ is longer 0nm extremely than the longest wavelength using optical source wavelength The short wavelength cutoff wavelength of 30nm, the band-pass wavelength λ are shorter 0nm than the minimal wave length using optical source wavelength to 30nm.

3. optical imaging lens according to claim 1, which is characterized in that the curvature of the object side of first lens half Diameter R1 and total effective focal length f of the optical imaging lens meet 0.3 ＜ R1/f ＜ 0.7.

4. optical imaging lens according to claim 1, which is characterized in that the curvature of the object side of first lens half Diameter R1 and the effective focal length f1 of first lens meet 0.3 ＜ R1/f1 ＜ 0.6.

5. optical imaging lens according to claim 1, which is characterized in that the maximum of the object side of first lens has It imitates half bore DT11 and meets 1.7 ＜ DT11/CT1 ＜ 2.2 in the center thickness CT1 on the optical axis with first lens.

6. optical imaging lens according to claim 1, which is characterized in that first lens, second lens, institute State the third lens and the 4th lens respectively at the sum of center thickness on the optical axis ∑ CT and first lens object Spacing distance TTL of the imaging surface on the optical axis of side to the optical imaging lens meets 0.2 ＜ ∑ CT/TTL ＜ 0.5。

7. optical imaging lens according to claim 6, which is characterized in that first lens and second lens exist The object side of spacing distance T12 on the optical axis and first lens to the optical imaging lens imaging surface described Spacing distance TTL on optical axis meets 0.1 ＜ T12/TTL ＜ 0.2.

8. optical imaging lens according to claim 6, which is characterized in that the third lens and the 4th lens exist The spacing distance T34 and spacing distance T23 of second lens and the third lens on the optical axis on the optical axis Meet T34/T23 ＜ 0.2.

9. optical imaging lens according to claim 6, which is characterized in that second lens are on the optical axis Heart thickness CT2 meets 0.4 ＜ CT2/CT3 ＜ 0.7 with the third lens in the center thickness CT3 on the optical axis.

10. optical imaging lens according to claim 6, which is characterized in that the 4th lens are on the optical axis Center thickness CT4 and the edge thickness ET4 of the 4th lens meet 1.2 ＜ CT4/ET4 ＜ 2.4.

11. optical imaging lens according to claim 1, which is characterized in that the maximum of the object side of first lens Effective half bore DT11 and the effective half bore DT21 of maximum of the object side of second lens meet 1.0≤DT11/DT21 ＜ 1.3。

12. optical imaging lens according to claim 1, which is characterized in that the maximum of the object side of first lens The effective half bore DT22 of maximum of effective half bore DT11 and the image side surface of second lens meet 0.8 ＜ DT11/DT22 ＜ 1.1。

13. optical imaging lens according to claim 1, which is characterized in that the curvature of the object side of the third lens Radius R5 and the radius of curvature R 6 of the image side surface of the third lens meet 0.9 ＜ R5/R6 ＜ 1.3.

14. optical imaging lens according to claim 13, which is characterized in that the object side of the third lens and described The intersection point of optical axis to the object side of the third lens distance SAG31 of the maximum effective half bore vertex on the optical axis with The third lens meet -1.3 ＜ SAG31/CT3 ＜ -0.7 in the center thickness CT3 on the optical axis.

15. optical imaging lens according to claim 1, which is characterized in that the maximum of the image side surface of the 4th lens Effective half bore DT42 and one of the effective pixel area diagonal line length of photosensitive element on the imaging surface of the optical imaging lens Half ImgH meets 0.7 ＜ DT42/ImgH ＜ 1.

16. the optical imaging lens according to any one of claim 1 to 15, which is characterized in that the optical imaging lens Total effective focal length f of head meets f/EPD≤2.1 with the Entry pupil diameters EPD of the optical imaging lens.

17. optical imaging lens include sequentially by object side to image side along optical axis：First lens, the second lens, the third lens, 4th lens, which is characterized in that

It is convex surface that first lens, which have positive light coke, object side,；

It is concave surface that second lens, which have positive light coke or negative power, object side, and image side surface is convex surface；

It is concave surface that the third lens, which have positive light coke, object side, and image side surface is convex surface；

4th lens have positive light coke or negative power；

Second lens are in the center thickness CT2 on the optical axis with the third lens in the center thickness on the optical axis CT3 meets 0.4 ＜ CT2/CT3 ＜ 0.7.

18. optical imaging lens according to claim 17, which is characterized in that the curvature of the object side of first lens Radius R1 and total effective focal length f of the optical imaging lens meet 0.3 ＜ R1/f ＜ 0.7.

19. optical imaging lens according to claim 18, which is characterized in that the curvature of the object side of first lens Radius R1 and the effective focal length f1 of first lens meet 0.3 ＜ R1/f1 ＜ 0.6.

20. optical imaging lens according to claim 19, which is characterized in that the effective focal length f1 of first lens with Total effective focal length f of the optical imaging lens meets 1.2 ＜ f1/f ＜ 1.8.

21. optical imaging lens according to claim 17, which is characterized in that the maximum of the object side of first lens Effective half bore DT11 meets 1.7 ＜ DT11/CT1 ＜ 2.2 with first lens in the center thickness CT1 on the optical axis.

22. optical imaging lens according to claim 21, which is characterized in that the maximum of the object side of first lens Effective half bore DT11 and the effective half bore DT21 of maximum of the object side of second lens meet 1.0≤DT11/DT21 ＜ 1.3。

23. optical imaging lens according to claim 22, which is characterized in that the maximum of the object side of first lens The effective half bore DT22 of maximum of effective half bore DT11 and the image side surface of second lens meet 0.8 ＜ DT11/DT22 ＜ 1.1。

24. optical imaging lens according to claim 17, which is characterized in that the curvature of the object side of the third lens Radius R5 and the radius of curvature R 6 of the image side surface of the third lens meet 0.9 ＜ R5/R6 ＜ 1.3.

25. optical imaging lens according to claim 17, which is characterized in that the object side of the third lens and described The intersection point of optical axis to the object side of the third lens distance SAG31 of the maximum effective half bore vertex on the optical axis with The third lens meet -1.3 ＜ SAG31/CT3 ＜ -0.7 in the center thickness CT3 on the optical axis.

26. optical imaging lens according to claim 17, which is characterized in that the 4th lens are on the optical axis Center thickness CT4 and the edge thickness ET4 of the 4th lens meet 1.2 ＜ CT4/ET4 ＜ 2.4.

27. optical imaging lens according to claim 17, which is characterized in that the maximum of the image side surface of the 4th lens Effective half bore DT42 and one of the effective pixel area diagonal line length of photosensitive element on the imaging surface of the optical imaging lens Half ImgH meets 0.7 ＜ DT42/ImgH ＜ 1.

28. optical imaging lens according to claim 17, which is characterized in that the third lens and the 4th lens Spacing distance T34 on the optical axis and the spacing distance of second lens and the third lens on the optical axis T23 meets T34/T23 ＜ 0.2.

29. optical imaging lens according to claim 28, which is characterized in that first lens and second lens The object side of spacing distance T12 on the optical axis and first lens to the optical imaging lens imaging surface in institute The spacing distance TTL stated on optical axis meets 0.1 ＜ T12/TTL ＜ 0.2.

30. the optical imaging lens according to any one of claim 17 to 29, which is characterized in that first lens, Second lens, the third lens and the 4th lens are respectively at the sum of center thickness on the optical axis ∑ CT and institute It states the object sides of the first lens and meets 0.2 to spacing distance TTL of the imaging surface of the optical imaging lens on the optical axis ＜ ∑ CT/TTL ＜ 0.5.

31. the optical imaging lens according to any one of claim 17 to 29, which is characterized in that the optical imaging lens Head further includes the infrared band pass filter being set between the 4th lens and the imaging surface of the optical imaging lens,

The band-pass wavelength λ of the infrared band pass filter is based on floating using optical source wavelength, and works as the saturating of the band-pass wavelength λ When crossing rate more than 50%, the long wave cut-off wavelength of the band-pass wavelength λ is longer 0nm extremely than the longest wavelength using optical source wavelength The short wavelength cutoff wavelength of 30nm, the band-pass wavelength λ are shorter 0nm than the minimal wave length using optical source wavelength to 30nm.

32. the optical imaging lens according to any one of claim 17 to 29, which is characterized in that the optical imaging lens Total effective focal length f of head meets f/EPD≤2.1 with the Entry pupil diameters EPD of the optical imaging lens.