CN114002821B - Optical lens, camera module, electronic equipment and car - Google Patents

Abstract

An optical lens assembly, an image capturing module, an electronic device and an automobile, wherein the optical lens assembly comprises a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element, an eighth lens element, a ninth lens element, a tenth lens element and an eleventh lens element which are arranged in order from an object side to an image side along an optical axis, the first lens element has negative refractive power, the object side and the image side of the first lens element are convex and concave at a paraxial region, the second lens element has negative refractive power, the image side of the second lens element is concave at a paraxial region, the third, fourth and fifth lens elements have positive refractive power, the object side of the sixth lens element is convex at a paraxial region, the seventh, eighth, ninth and tenth lens elements have refractive power, the object side of the seventh lens element and the paraxial region are convex, and the object side of the tenth lens element is concave at a paraxial region. The optical lens, the camera module, the electronic equipment and the automobile can realize the imaging effect of a large image plane on the basis of considering the miniaturization design requirement.

Description

Optical lenses, camera modules, electronic equipment and automobiles

Technical Field

The present application relates to the field of optical imaging technology, and in particular to an optical lens, a camera module, an electronic device and a car.

Background Art

In recent years, with the development of the automotive industry, the technical requirements for vehicle-mounted cameras such as ADAS (Advanced Driver Assistant System), driving recorders, and reversing images have become increasingly higher. Taking ADAS lenses as an example, ADAS lenses can accurately and in real time capture road information (such as detecting objects, detecting light sources, detecting road signs, etc.) for image analysis. When used in driving records, they can provide drivers with a clear field of vision. When used in monitoring and security, they can also clearly record detailed information, etc., providing corresponding technical support and application guarantees in all aspects of practical applications, so the market demand for ADAS lenses is also increasing. However, the pixels of ADAS lenses in related technologies are not high enough to achieve large image plane imaging, which makes it difficult to match ultra-high pixel photosensitive chips.

Summary of the invention

The embodiments of the present application disclose an optical lens, a camera module, an electronic device and a car, which can achieve an imaging effect with a large image surface.

In order to achieve the above-mentioned object, in a first aspect, the present application discloses an optical lens, wherein the optical lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens, a tenth lens and an eleventh lens arranged in sequence from the object side to the image side along the optical axis;

The first lens has negative refractive power, and the object side surface and image side surface of the first lens are convex and concave respectively at the near optical axis;

The second lens has negative refractive power, and the image side surface of the second lens is concave at the near optical axis;

The third lens has refractive power;

The fourth lens has refractive power;

The fifth lens has refractive power;

The sixth lens has positive refractive power, and the object side surface of the sixth lens is convex at the near optical axis;

The seventh lens has refractive power, and the object side surface of the seventh lens is convex near the optical axis;

The eighth lens has refractive power;

The ninth lens has refractive power;

The tenth lens has refractive power, and the object side surface of the tenth lens is concave at the near optical axis;

The eleventh lens has positive refractive power, and the object side surface of the eleventh lens is convex at the near optical axis;

Among them, the second lens, the sixth lens and the tenth lens are aspherical lenses, the image side surface of the eighth lens and the object side surface of the ninth lens are glued and connected to form a glued lens, and the optical lens also includes an aperture stop, which is located between the fourth lens and the fifth lens, or the aperture stop is located between the fifth lens and the sixth lens.

In the optical lens provided by the present application, when the incident light passes through the first lens with negative refractive power, the object side surface and image side surface of the first lens are convex and concave at the near optical axis, respectively, which is conducive to more incident light entering the first lens, thereby facilitating the realization of wide-angle and large aperture imaging effects of the optical lens; at the same time, the object side surface and image side surface of the first lens are convex and concave at the near optical axis, respectively, which is conducive to reducing the thickness of the first lens and reducing the overall thickness of the optical lens; at the same time, the second lens with negative refractive power and aspheric surface is provided, and the image side surface of the second lens is concave at the near optical axis, which can help reduce the edge aberration of the light incident at a large angle through the first lens, so as to reduce the occurrence of field curvature; the sixth lens with positive refractive power and aspheric surface is combined with the object side surface of the sixth lens being convex at the near optical axis, which is conducive to reasonably distributing the positive refractive power of the optical lens, thereby providing the optical lens with the ability to converge the main light. The object side of the seventh lens is convex at the near optical axis, which is conducive to reducing the risk of ghosting, while the object side of the aspherical tenth lens is concave at the near optical axis, which is conducive to increasing the amount of light entering the optical lens, thereby increasing the edge illumination of the optical lens. The eleventh lens has a positive refractive power, and its object side is convex at the near optical axis, which is conducive to allowing light to enter the imaging surface of the optical lens more smoothly, thereby expanding the image height of the optical lens and achieving a large image height effect. When the optical lens is applied to a camera module, it can match the large-size photosensitive chip of the camera module and achieve a large image surface imaging effect.

In addition, the present application adopts the method that the second lens, the sixth lens, and the tenth lens are aspherical lenses, and the other lenses are spherical lenses, that is, the combination of spherical lenses and aspherical lenses can not only reduce the processing difficulty of the optical lens, but also help to ensure the imaging quality of the optical lens. The method of gluing the eighth lens and the ninth lens to form a glued lens is conducive to reducing the chromatic aberration of the optical lens and correcting the spherical aberration of the optical lens, thereby helping to improve the resolution of the optical lens, and further to improve the imaging quality of the optical lens.

In addition, by using an aperture located between the fourth lens and the fifth lens, or by using an aperture located between the fifth lens and the sixth lens, that is, by using an approximately central aperture, the distortion produced by the optical lens can be reduced, while at the same time helping to expand the field of view of the optical lens.

As an optional implementation manner, in an embodiment of the first aspect of the present application, the optical lens satisfies the following relationship:

35deg<(FOVm×f)/Ym<60deg;

Among them, FOVm is the maximum field of view angle of the optical lens, Ym is the image height corresponding to the maximum field of view angle of the optical lens, and f is the effective focal length of the optical lens.

When the above relationship is satisfied, the optical lens has a larger field angle, which is conducive to achieving the large image height effect of the optical lens. Therefore, when the optical lens is applied to the camera module, it can be adapted to the large-size chip of the camera module, which is conducive to improving the image surface brightness of the optical lens. When it is lower than the lower limit of the relationship, the field angle of the optical lens becomes smaller, and it is difficult to achieve the wide-angle effect of the optical lens; when it exceeds the upper limit of the relationship, the maximum image height of the optical lens becomes smaller, resulting in a reduction in the field of view of the optical lens, which is not conducive to achieving the large image height effect of the optical lens.

As an optional implementation manner, in an embodiment of the first aspect of the present application, the optical lens satisfies the following relationship:

4＜Ym/EPD＜6;

Wherein, Ym is the image height corresponding to the maximum field angle of the optical lens, and EPD is the entrance pupil diameter of the optical lens.

By limiting the ratio of the image height to the entrance pupil diameter of the optical lens, it is beneficial to ensure the improvement of the image brightness of the large-target optical lens, thereby achieving large-aperture imaging. When the upper limit of the above relationship is exceeded, the entrance pupil diameter of the optical lens is small, which reduces the width of the light beam entering the optical lens, which is not conducive to the improvement of the image brightness of the optical lens; and when the lower limit of the above relationship is exceeded, the image area of the optical lens is small, resulting in a reduction in the field of view of the optical lens, which is not conducive to the matching of the optical lens with the large-size chip of the camera module used, which in turn leads to the easy generation of dark corners and affects the imaging quality.

As an optional implementation manner, in an embodiment of the first aspect of the present application, the optical lens satisfies the following relationship:

6deg/mm<CRA/SAGs111<18deg/mm;

Wherein, CRA is the incident angle of the main light of the optical lens, SAGs111 is the distance from the maximum effective aperture of the object side of the eleventh lens to the intersection of the object side of the eleventh lens and the optical axis in the direction of the optical axis, that is, the sagittal height of the object side of the eleventh lens.

By controlling the sagitta of the object side of the eleventh lens, the surface shape of the object side of the eleventh lens can be effectively controlled, so that the object side of the eleventh lens is not too curved, which is convenient for processing and production, and is also beneficial to reduce the angle at which light enters the photosensitive chip of the camera module used by the optical lens, thereby improving the photosensitivity. When it is lower than the lower limit of the relationship, the sagitta of the object side of the eleventh lens is too large, resulting in the surface shape of the object side of the eleventh lens being too curved, which is not conducive to processing and production; and when it exceeds the upper limit of the relationship, the incident angle of the main light of the optical lens is too large, which is not conducive to matching with the photosensitive chip of the camera module used by the optical lens.

As an optional implementation manner, in an embodiment of the first aspect of the present application, the optical lens satisfies the following relationship:

2.5<SD11/SAGs11<5;

Among them, SD11 is the maximum effective semi-aperture of the object side surface of the first lens, and SAGs11 is the distance from the maximum effective aperture of the object side surface of the first lens to the intersection of the object side surface of the first lens and the optical axis in the direction of the optical axis, that is, the sagittal height of the object side surface of the first lens.

By controlling the ratio of the maximum effective semi-aperture of the object side surface of the first lens to the sagittal height of the object side surface of the first lens, it is beneficial to control the surface shape of the object side surface of the first lens, and it is beneficial to control the aperture size of the head lens of the optical lens to achieve a wide-angle effect. When it is below the lower limit of the relationship, the surface shape of the object side surface of the first lens is too curved, which increases the difficulty of processing and production of the first lens, and is also not conducive to large-angle light incident on the optical lens, affecting the imaging quality of the optical lens; and when it exceeds the upper limit of the relationship, the aperture of the object side surface of the first lens increases, which is not conducive to compressing the volume of the overall lens group of the optical lens.

As an optional implementation manner, in an embodiment of the first aspect of the present application, the optical lens satisfies the following relationship:

1＜Ym/SD11＜2.5;

Among them, Ym is the image height corresponding to the maximum field angle of the optical lens, and SD11 is the maximum effective semi-aperture of the object side of the first lens.

By controlling the ratio of the image height corresponding to the maximum field angle of the optical lens to the maximum effective semi-aperture of the object side of the first lens, the aperture of the front end of the optical lens can be guaranteed while also ensuring the size of the image height of the optical lens, thus achieving the effect of large image height and small head. When it is below the lower limit of the relationship, the aperture of the head lens of the optical lens increases. Due to the limitation of the installation space of the optical lens, the increase in the aperture of the head lens is not conducive to the lens meeting the installation requirements of small aperture and small size at the front end; and when it exceeds the upper limit of the relationship, the image height corresponding to the maximum field angle of the optical lens is too large, which is not conducive to matching with the photosensitive chip of the camera module used by the optical lens, affecting the imaging effect, and at the same time causing the optical illumination of the optical lens to decrease.

As an optional implementation manner, in an embodiment of the first aspect of the present application, the optical lens satisfies the following relationship:

24mm＜TTL/FNO＜35mm;

Wherein, TTL is the distance from the object side of the first lens to the imaging surface of the optical lens on the optical axis, that is, the total length of the optical lens, and FNO is the aperture number of the optical lens.

By reasonably controlling the ratio of the total length of the optical lens to the aperture number of the optical lens, it is beneficial to increase the aperture of the optical lens, achieve a large aperture and miniaturization effect (a short total length is beneficial to miniaturization design). When the upper limit of the relationship is exceeded, the total length of the optical lens increases, which is not conducive to the miniaturization design of the optical lens; and when it is lower than the lower limit of the relationship, the aperture number of the optical lens decreases, resulting in insufficient light entering the optical lens, reducing the optical illumination of the optical lens, affecting the imaging effect of the optical lens, and is not conducive to large aperture imaging of the optical lens.

As an optional implementation manner, in an embodiment of the first aspect of the present application, the optical lens satisfies the following relationship:

4.5＜f/CT1＜9;

Wherein, f is the effective focal length of the optical lens, and CT1 is the thickness of the first lens on the optical axis, that is, the center thickness of the first lens.

By controlling the ratio of the effective focal length of the optical lens to the center thickness of the first lens, the center thickness of the first lens can be effectively controlled. At the same time, combined with the reasonable distribution of the focal length, the overall lens group volume of the optical lens can be compressed, the total length of the optical lens can be reduced, and the miniaturization design of the optical lens can be realized. When it is lower than the lower limit of the relationship, the effective focal length of the optical lens is reduced, which is not conducive to achieving the telephoto effect of the optical lens; and when it exceeds the upper limit of the relationship, the center thickness of the first lens becomes smaller, which affects the smooth incidence of light to the first lens, which is not conducive to the wide-angle of the optical lens. At the same time, the center thickness of the first lens becomes smaller, resulting in the center of the first lens being too thin and easy to break under stress, which is not conducive to the processing and production of the first lens.

As an optional implementation manner, in an embodiment of the first aspect of the present application, the optical lens satisfies the following relationship:

0.5＜f12/f＜2.5;

Wherein, f12 is the combined focal length of the first lens and the second lens, and f is the effective focal length of the optical lens.

By controlling the ratio of the combined focal length of the first lens and the second lens to the effective focal length of the optical lens, it is beneficial to control the convergence ability of the front lens group of the optical lens on the light beam, and it is also beneficial to the injection of light with a large angle of view, so as to achieve a wide angle of the optical lens. When the upper limit of the relationship is exceeded, the refractive power of the first lens and the second lens is insufficient, and it is difficult for light with a large angle to enter the optical lens, which is not conducive to expanding the field angle range of the optical lens; when the lower limit of the relationship is exceeded, the refractive power of the first lens and the second lens is too strong, which is easy to produce strong astigmatism and chromatic aberration, which is not conducive to achieving the high-resolution imaging characteristics of the optical lens.

In a second aspect, the present application discloses a camera module, the camera module comprising a photosensitive chip and the optical lens as described in the first aspect, the photosensitive chip being arranged on the image side of the optical lens. The camera module having the optical lens can achieve an imaging effect of a large aperture and a large image surface.

In a third aspect, the present application discloses an electronic device, the electronic device comprising a housing and a camera module as described in the second aspect, the camera module being arranged in the housing. The electronic device having the camera module can achieve an imaging effect of a large aperture and a large image surface.

In a fourth aspect, the present application discloses a car, comprising a car body and the camera module as described in the second aspect, wherein the camera module is arranged on the car body. The car with the camera module can achieve an imaging effect with a large aperture and a large image surface.

Compared with the prior art, the beneficial effects of this application are:

In the optical lens provided by the present application, when the incident light passes through the first lens with negative refractive power, the object side surface and image side surface of the first lens are convex and concave at the near optical axis, respectively, which is conducive to more incident light entering the first lens, thereby facilitating the realization of wide-angle and large aperture imaging effects of the optical lens; at the same time, the object side surface and image side surface of the first lens are convex and concave at the near optical axis, respectively, which is conducive to reducing the thickness of the first lens and reducing the overall thickness of the optical lens; at the same time, the second lens with negative refractive power and aspheric surface is provided, and the image side surface of the second lens is concave at the near optical axis, which can help reduce the edge aberration of the light incident at a large angle through the first lens, so as to reduce the occurrence of field curvature; the sixth lens with positive refractive power and aspheric surface is combined with the object side surface of the sixth lens being convex at the near optical axis, which is conducive to reasonably distributing the positive refractive power of the optical lens, thereby providing the optical lens with the ability to converge the main light. The object side of the seventh lens is convex at the near optical axis, which is conducive to reducing the risk of ghosting, while the object side of the aspherical tenth lens is concave at the near optical axis, which is conducive to increasing the amount of light entering the optical lens, thereby increasing the edge illumination of the optical lens. The eleventh lens has a positive refractive power, and its object side is convex at the near optical axis, which is conducive to allowing light to enter the imaging surface of the optical lens more smoothly, thereby expanding the image height of the optical lens and achieving a large image height effect. When the optical lens is applied to a camera module, it can match the large-size photosensitive chip of the camera module and achieve a large image surface imaging effect.

In addition, the present application adopts the method that the second lens, the sixth lens, and the tenth lens are aspherical lenses, and the other lenses are spherical lenses, that is, the combination of spherical lenses and aspherical lenses can not only reduce the processing difficulty of the optical lens, but also help to ensure the imaging quality of the optical lens. The method of gluing the eighth lens and the ninth lens to form a glued lens is conducive to reducing the chromatic aberration of the optical lens and correcting the spherical aberration of the optical lens, thereby helping to improve the resolution of the optical lens, and further to improve the imaging quality of the optical lens.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

FIG1 is a schematic diagram of the structure of an optical lens disclosed in a first embodiment of the present application;

FIG2 is a longitudinal spherical aberration diagram (mm), an astigmatism curve diagram (mm), and a distortion curve diagram (%) of the optical lens disclosed in the first embodiment of the present application;

FIG3 is a schematic diagram of the structure of an optical lens disclosed in a second embodiment of the present application;

FIG4 is a longitudinal spherical aberration diagram (mm), an astigmatism curve diagram (mm), and a distortion curve diagram (%) of the optical lens disclosed in the second embodiment of the present application;

FIG5 is a schematic diagram of the structure of an optical lens disclosed in a third embodiment of the present application;

FIG6 is a longitudinal spherical aberration diagram (mm), an astigmatism curve diagram (mm), and a distortion curve diagram (%) of the optical lens disclosed in the third embodiment of the present application;

FIG. 7 is a schematic diagram of the structure of an optical lens disclosed in a fourth embodiment of the present application;

FIG8 is a longitudinal spherical aberration diagram (mm), an astigmatism curve diagram (mm), and a distortion curve diagram (%) of the optical lens disclosed in the fourth embodiment of the present application;

FIG9 is a schematic structural diagram of an optical lens disclosed in a fifth embodiment of the present application;

FIG10 is a diagram of longitudinal spherical aberration (mm), astigmatism curve (mm), and distortion curve (%) of the optical lens disclosed in the fifth embodiment of the present application;

FIG11 is a schematic structural diagram of a lens module disclosed in the present application;

FIG12 is a schematic diagram of the structure of an electronic device disclosed in the present application;

FIG. 13 is a schematic structural diagram of the automobile disclosed in the present application.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

The technical solution of the present application will be further described below in conjunction with embodiments and drawings.

Please refer to FIG. 1 . According to the first aspect of the present application, the present application discloses an optical lens 100, which includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a ninth lens L9, a tenth lens L10, and an eleventh lens L11, which are sequentially arranged from the object side to the image side along the optical axis O. When imaging, light enters the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, and the sixth lens L6 sequentially from the object side of the first lens L1, and finally forms an image on the imaging surface 101 of the optical lens 100. Among them, the first lens L1 has negative refractive power, the second lens L2 has negative refractive power, the third lens L3 has refractive power, for example, positive refractive power or negative refractive power; the fourth lens L4 has refractive power, for example, positive refractive power or negative refractive power, the fifth lens L5 has refractive power, for example, positive refractive power or negative refractive power, and the sixth lens L6 has positive refractive power; the seventh lens L7 has refractive power, for example, positive refractive power or negative refractive power, the eighth lens L8 has positive refractive power or negative refractive power, the ninth lens L9 has positive refractive power or negative refractive power, the tenth lens L10 has positive refractive power or negative refractive power, and the eleventh lens L11 has positive refractive power.

Further, the object-side surface S1 of the first lens L1 is convex at the near optical axis O, and the image-side surface S2 of the first lens L1 is concave at the near optical axis O; the object-side surface S3 of the second lens L2 is concave or convex at the near optical axis, and the image-side surface S4 of the second lens L2 is concave at the near optical axis O; the object-side surface S5 of the third lens L3 is concave or convex at the near optical axis O, and the image-side surface S6 of the third lens L3 is concave or convex at the near optical axis O; the object-side surface S7 and the image-side surface S8 of the fourth lens L4 may both be concave or convex at the near optical axis O; the object-side surface S9 and the image-side surface S10 of the fifth lens L5 may both be concave or convex at the near optical axis O; the object-side surface S11 of the sixth lens L6 is convex at the optical axis O, and the image-side surface S12 of the sixth lens L6 is concave or convex at the optical axis O. The object-side surface S13 of the seventh lens L7 is convex at the near optical axis O, and the image-side surface S14 of the seventh lens L7 is concave or convex at the near optical axis O. The object-side surface S15 of the eighth lens L8 is concave or convex at the near optical axis O, the image-side surface S16 of the eighth lens L8 is concave or convex at the near optical axis O, the object-side surface S17 of the ninth lens L9 is concave or convex at the near optical axis O, and the image-side surface S18 of the ninth lens L9 is concave or convex at the near optical axis O. The object-side surface S19 of the tenth lens L10 is concave at the near optical axis O, and the image-side surface S20 of the tenth lens L10 is concave or convex at the near optical axis O. The object-side surface S21 of the eleventh lens L11 is convex at the near optical axis O, and the image-side surface S22 of the eleventh lens L11 is concave or convex at the near optical axis O.

In some embodiments, among the first lens L1 to the eleventh lens L11, the second lens L2, the sixth lens L6 and the tenth lens L10 may be aspherical lenses, and the remaining lenses may be spherical lenses. Aspherical lenses can reduce the difficulty of lens processing and can achieve more complex surface design. It can be seen that the application adopts a hybrid design of spherical lenses and aspherical lenses, which can reduce the difficulty of lens processing of the optical lens 100, thereby helping to reduce the processing cost of the optical lens 100.

Furthermore, considering that the optical lens 100 is mostly used in electronic devices such as vehicle-mounted devices and driving recorders, or is used in automobiles as cameras on automobile bodies, some of the lenses in the first lens L1 to the eleventh lens L11 may be glass lenses, and some of the lenses may be plastic lenses. Specifically, as can be seen from the foregoing, in the first lens L1 to the eleventh lens L11, the second lens L2, the sixth lens L6, and the tenth lens L10 are aspherical lenses, and the first lens L1, the third lens L3, the fourth lens L4, the fifth lens L5, the seventh lens L7, the eighth lens L8, the ninth lens L9, and the eleventh lens L11 are all spherical lenses. Therefore, the material of the spherical lens can be glass, and the material of the aspherical lens can be plastic or glass. Preferably, in the first lens L1 to the eleventh lens L11, all lenses are glass lenses to reduce the influence of temperature on the lens, thereby effectively ensuring the imaging effect of the lens.

Furthermore, the image-side surface S16 of the eighth lens L8 and the object-side surface S17 of the ninth lens L9 are cemented and connected to form a cemented lens, which is beneficial to reducing the chromatic aberration of the optical lens 100 and correcting the spherical aberration of the optical lens 100, thereby facilitating the improvement of the resolution of the optical lens 100 and further facilitating the improvement of the imaging quality of the optical lens 100.

In some embodiments, the optical lens 100 further includes a stop 102, which may be an aperture stop and/or a field stop, and may be disposed between the fourth lens L4 and the fifth lens L5, or between the fifth lens L5 and the sixth lens L6, that is, the stop 102 is a nearly central stop. The nearly central stop can reduce the distortion produced by the optical lens 100, and is also conducive to expanding the field angle of the optical lens 100.

In some embodiments, the optical lens 100 further includes an infrared filter 12, and the infrared filter 12 is disposed between the eleventh lens L11 and the imaging surface 101 of the optical lens 100. The infrared filter 12 is selected to filter out infrared light, thereby improving the imaging quality and making the imaging more in line with the visual experience of the human eye. It is understandable that the infrared filter 12 can be made of optical glass coating, or can be made of colored glass, or an infrared filter 12 of other materials, which can be selected according to actual needs and is not specifically limited in this embodiment.

In some embodiments, the optical lens 100 satisfies the following relationship: 35deg<(FOVm×f)/Ym<60deg; wherein FOVm is the maximum field of view of the optical lens 100, Ym is the image height corresponding to the maximum field of view of the optical lens 100, and f is the effective focal length of the optical lens 100. When the above relationship is satisfied, the optical lens 100 has a larger field of view, which is conducive to achieving the large image height effect of the optical lens 100, so that when the optical lens 100 is applied to the camera module, it can be adapted to the large-size chip of the camera module, which is conducive to improving the image surface brightness of the optical lens 100. When it is lower than the lower limit of the relationship, the field of view of the optical lens 100 becomes smaller, and it is difficult to achieve the wide-angle effect of the optical lens 100; and when it exceeds the upper limit of the relationship, the maximum image height of the optical lens 100 becomes smaller, resulting in a reduction in the field of view of the optical lens 100, which is not conducive to achieving the large image height effect of the optical lens 100.

In some embodiments, the optical lens 100 satisfies the following relationship: 4＜Ym/EPD＜6; wherein Ym is the image height corresponding to the maximum field angle of the optical lens 100, and EPD is the entrance pupil diameter of the optical lens 100. By limiting the ratio of the image height to the entrance pupil diameter of the optical lens 100, it is beneficial to ensure the improvement of the image surface brightness of the large target surface optical lens 100, thereby realizing large aperture imaging. When the upper limit of the above relationship is exceeded, the entrance pupil diameter of the optical lens 100 is small, which reduces the width of the light beam incident on the optical lens 100, which is not conducive to the improvement of the image surface brightness of the optical lens 100; and when the lower limit of the above relationship is exceeded, the image surface area of the optical lens 100 is small, resulting in a reduction in the field of view of the optical lens 100, which is not conducive to the matching of the optical lens 100 with the large-size chip of the camera module to which it is applied, and thus easily leads to dark corners, affecting the imaging quality.

In some embodiments, the optical lens 100 satisfies the following relationship: 6deg/mm<CRA/SAGs111<18deg/mm; wherein CRA is the incident angle of the main light of the optical lens 100, and SAGs111 is the distance from the maximum effective aperture of the object side surface S21 of the eleventh lens L11 to the intersection of the object side surface S21 of the eleventh lens L11 and the optical axis O in the direction of the optical axis, that is, the sagittal height of the object side surface S21 of the eleventh lens L11. By controlling the sagittal height of the object side surface S21 of the eleventh lens L11, the surface shape of the object side surface S21 of the eleventh lens L11 can be effectively controlled, so that the object side surface S21 of the eleventh lens L11 is not too curved, which is convenient for processing and production, and is also conducive to reducing the angle of light entering the photosensitive chip of the camera module used in the optical lens 100, thereby improving the photosensitivity. When it is lower than the lower limit of the relationship, the sagittal height of the object-side surface S21 of the eleventh lens L11 is too large, resulting in the object-side surface S21 of the eleventh lens L11 being too curved, which is not conducive to processing and production; and when it exceeds the upper limit of the relationship, the incident angle of the main light of the optical lens 100 is too large, which is not conducive to matching with the photosensitive chip of the camera module to which the optical lens 100 is applied.

In some embodiments, the optical lens 100 satisfies the following relationship: 2.5<SD11/SAGs11<5; wherein SD11 is the maximum effective semi-aperture of the object side surface S1 of the first lens L1, and SAGs11 is the distance from the maximum effective aperture of the object side surface S1 of the first lens L1 to the intersection of the object side surface S1 of the first lens L1 and the optical axis O in the optical axis direction, that is, the sagittal height of the object side surface S1 of the first lens. By controlling the ratio of the maximum effective semi-aperture of the object side surface S1 of the first lens L1 to the sagittal height of the object side surface S1 of the first lens L1, it is helpful to control the surface shape of the object side surface S1 of the first lens L1, and it is helpful to control the aperture size of the head lens of the optical lens 100, so as to achieve a wide-angle effect. When it is lower than the lower limit of the relationship, the surface S1 of the object side surface of the first lens L1 is too curved, which increases the difficulty of processing and producing the first lens L1, and is also not conducive to large-angle light being incident on the optical lens 100, affecting the imaging quality of the optical lens 100; and when it exceeds the upper limit of the relationship, the aperture of the object side surface S1 of the first lens L1 increases, which is not conducive to compressing the volume of the overall lens group of the optical lens 100.

In some embodiments, the optical lens 100 satisfies the following relationship: 1＜Ym/SD11＜2.5; wherein Ym is the image height corresponding to the maximum field angle of the optical lens 100, and SD11 is the maximum effective semi-aperture of the object-side surface S1 of the first lens L1.

By controlling the ratio of the image height corresponding to the maximum field angle of the optical lens 100 to the maximum effective semi-aperture of the object side S1 of the first lens L1, the aperture of the front end of the optical lens 100 can be guaranteed while also ensuring the size of the image height of the optical lens 100, thereby achieving a large image height and small head effect. When it is below the lower limit of the relationship, the aperture of the head lens of the optical lens 100 is increased. Due to the limitation of the installation space of the optical lens 100, the increase in the aperture of the head lens is not conducive to the optical lens 100 meeting the installation requirements of the front end small aperture and small size; and when it exceeds the upper limit of the relationship, the image height corresponding to the maximum field angle of the optical lens 100 is too large, which is not conducive to matching with the photosensitive chip of the camera module used by the optical lens 100, affecting the imaging effect, and at the same time causing the optical illumination of the optical lens to be reduced.

In some embodiments, the optical lens 100 satisfies the following relationship: 24mm＜TTL/FNO＜35mm; wherein TTL is the distance from the object side surface S1 of the first lens L1 to the imaging surface 101 of the optical lens 100 on the optical axis O, that is, the total length of the optical lens 100, and FNO is the aperture number of the optical lens 100. By reasonably controlling the ratio of the total length of the optical lens 100 and the aperture number of the optical lens 100, it is beneficial to increase the aperture of the optical lens 100, achieve a large aperture and miniaturization effect (a short total length is beneficial to miniaturization design). When the upper limit of the relationship is exceeded, the total length of the optical lens 100 increases, which is not conducive to the miniaturization design of the optical lens; and when it is lower than the lower limit of the relationship, the aperture number of the optical lens 100 decreases, resulting in insufficient light input to the optical lens 100, and the optical illumination of the optical lens 100 is reduced, which affects the imaging effect of the optical lens 100 and is not conducive to large aperture imaging of the optical lens 100.

In some embodiments, the optical lens 100 satisfies the following relationship: 4.5＜f/CT1＜9; wherein f is the effective focal length of the optical lens 100, and CT1 is the thickness of the first lens L1 at the optical axis O, that is, the center thickness of the first lens L1. By controlling the ratio of the effective focal length of the optical lens 100 to the center thickness of the first lens L1, the center thickness of the first lens L1 can be effectively controlled. At the same time, combined with the reasonable distribution of the focal length, the overall lens group volume of the optical lens 100 can be compressed, the total length of the optical lens 100 can be reduced, and the miniaturization design of the optical lens 100 can be realized. When it is lower than the lower limit of the relationship, the effective focal length of the optical lens 100 is reduced, which is not conducive to achieving the telephoto effect of the optical lens 100; and when it exceeds the upper limit of the relationship, the center thickness of the first lens L1 becomes smaller, which affects the smooth incidence of light to the first lens L1, which is not conducive to the wide-angle of the optical lens 100. At the same time, the center thickness of the first lens L1 becomes smaller, resulting in the center of the first lens L1 being too thin and easy to break under stress, which is not conducive to the processing and production of the first lens L1.

In some embodiments, the optical lens 100 satisfies the following relationship: 0.5＜f12/f＜2.5; wherein f12 is the combined focal length of the first lens L1 and the second lens L2, and f is the effective focal length of the optical lens 100. By controlling the ratio of the combined focal length of the first lens L1 and the second lens L2 to the effective focal length of the optical lens 100, it is beneficial to control the convergence ability of the front lens group of the optical lens 100 on the light beam, and it is also beneficial to the injection of light rays with a large angle of view, so as to achieve the wide angle of the optical lens 100. When the upper limit of the relationship is exceeded, the refractive power of the first lens L1 and the second lens L2 is insufficient, and it is difficult for the light rays with a large angle to be incident on the optical lens 100, which is not conducive to expanding the field angle range of the optical lens 100; when the lower limit of the relationship is exceeded, the refractive power of the first lens L1 and the second lens L2 is too strong, which is easy to produce strong astigmatism and chromatic aberration, which is not conducive to achieving the high-resolution imaging characteristics of the optical lens 100.

The optical lens 100 of this embodiment will be described in detail below with reference to specific parameters.

First embodiment

The structural schematic diagram of the optical lens 100 disclosed in the first embodiment of the present application is shown in FIG1 , and the optical lens 100 includes a first lens L1, a second lens L2, an aperture 102, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a ninth lens L9, a tenth lens L10, an eleventh lens L11, and an infrared filter 12, which are sequentially arranged along the optical axis O from the object side to the image side. Among them, the first lens L1 has a negative refractive power, the second lens L2 has a negative refractive power, the third lens L3 has a negative refractive power, the fourth lens L4 has a positive refractive power, the fifth lens L5 has a positive refractive power, and the sixth lens L6 may have a positive refractive power. The seventh lens L7 may have a positive refractive power, the eighth lens L8 has a positive refractive power, the ninth lens L9 has a negative refractive power, the tenth lens L10 has a negative refractive power, and the eleventh lens L11 has a positive refractive power.

Further, the object-side surface S1 of the first lens L1 is convex at the near optical axis O, and the image-side surface S2 of the first lens L1 is concave at the near optical axis O; the object-side surface S3 and the image-side surface S4 of the second lens L2 are convex and concave at the near optical axis O, respectively; the object-side surface S5 and the image-side surface S6 of the third lens L3 are convex and concave at the near optical axis O, respectively; the object-side surface S7 and the image-side surface S8 of the fourth lens L4 are concave and convex at the near optical axis O, respectively; the object-side surface S9 and the image-side surface S10 of the fifth lens L5 are convex and concave at the near optical axis O, respectively; the object-side surface S11 of the sixth lens L6 is convex at the near optical axis O, and the image-side surface S12 of the sixth lens L6 is convex at the near optical axis O. The object-side surface S13 and the image-side surface S14 of the seventh lens L7 are both convex at the near optical axis O. The object-side surface S15 and the image-side surface S16 of the eighth lens L8 are concave and convex respectively at the near optical axis O. The object-side surface S17 and the image-side surface S18 of the ninth lens L9 are both concave at the near optical axis O. The object-side surface S19 and the image-side surface S20 of the tenth lens L10 are respectively concave and convex at the near optical axis O. The object-side surface S21 and the image-side surface S22 of the eleventh lens L11 are both convex at the near optical axis O.

Specifically, taking the effective focal length f=8.062mm, the aperture number FNO=1.9, and the maximum field of view FOVm=144deg of the optical lens 100 as an example, other parameters of the optical lens 100 are given in Table 1 below. Among them, the elements from the object side to the image side along the optical axis O of the optical lens 100 are arranged in the order of the elements from top to bottom in Table 1. In the same lens, the surface with a smaller surface number is the object side of the lens, and the surface with a larger surface number is the image side of the lens, such as surface numbers 1 and 2 correspond to the object side S1 and image side S2 of the first lens L1, respectively. The Y radius in Table 1 is the radius of curvature of the object side or image side of the corresponding surface number at the optical axis. The first value in the "thickness" parameter column of the lens is the thickness of the lens on the optical axis, and the second value is the distance from the image side of the lens to the next surface on the optical axis. The value of the aperture in the "Thickness" parameter column is the distance from the aperture to the vertex of the next surface (the vertex refers to the intersection of the surface and the optical axis) on the optical axis. By default, the direction from the object side of the first lens to the image side of the last lens is the positive direction of the optical axis. When the value is negative, it indicates that the aperture is set on the image side of the next surface vertex. If the aperture thickness is a positive value, the aperture is on the object side of the next surface vertex. It can be understood that the units of the Y radius, thickness, and focal length in Table 1 are all mm. And the refractive index and Abbe number in Table 1 are obtained at a reference wavelength of 587.6nm, and the focal length in Table 1 is obtained at a reference wavelength of 555nm.

Furthermore, among the first lens L1 to the eleventh lens L11, the second lens L2, the sixth lens L6 and the tenth lens L10 are all aspherical lenses, and the surface shape x of each aspherical lens can be defined by but not limited to the following aspherical formula:

Wherein, x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at a height of h along the optical axis O; c is the curvature of the aspheric surface at the optical axis O, c=1/Y (i.e., the paraxial curvature c is the reciprocal of the curvature radius Y in the above Table 1); K is the cone coefficient; Ai is the correction coefficient of the i-th order of the aspheric surface. The following Table 2 lists the high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18 and A20 that can be used for each aspheric lens in the first embodiment.

Table 1

Table 2

Please refer to (A) in FIG. 2 , which shows the longitudinal spherical aberration curve of the optical lens 100 in the first embodiment at wavelengths of 435.0000nm, 471.1327nm, 510.0000nm, 555.0000nm, 610.0000 and 650.0000nm. In (A) in FIG. 2 , the abscissa along the X-axis direction represents the focus offset, and the ordinate along the Y-axis direction represents the normalized field of view. It can be seen from (A) in FIG. 2 that the spherical aberration value of the optical lens 100 in the first embodiment is better, indicating that the imaging quality of the optical lens 100 in this embodiment is better.

Please refer to (B) in FIG. 2 , which is an astigmatism curve of the optical lens 100 in the first embodiment at a wavelength of 555.0000 nm. The horizontal axis along the X-axis direction represents the focus offset, and the vertical axis along the Y-axis direction represents the image height, in units of mm. The astigmatism curve represents the meridian imaging surface curvature T and the sagittal imaging surface curvature S. It can be seen from (B) in FIG. 2 that at this wavelength, the astigmatism of the optical lens 100 is well compensated.

Please refer to (C) in FIG. 2 , which is a distortion curve of the optical lens 100 in the first embodiment at a wavelength of 555.0000nm. The abscissa along the X-axis direction represents the distortion, and the ordinate along the Y-axis direction represents the image height, in units of mm. It can be seen from (C) in FIG. 2 that the distortion of the optical lens 100 is well corrected at a wavelength of 555.0000nm.

Second embodiment

The structural schematic diagram of the optical lens 100 disclosed in the second embodiment of the present application is shown in FIG3 , and the optical lens 100 includes a first lens L1, a second lens L2, an aperture 102, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a ninth lens L9, a tenth lens L10, an eleventh lens L11, and an infrared filter 12, which are sequentially arranged along the optical axis O from the object side to the image side. Among them, the first lens L1 has a negative refractive power, the second lens L2 has a negative refractive power, the third lens L3 has a negative refractive power, the fourth lens L4 has a positive refractive power, the fifth lens L5 has a negative refractive power, and the sixth lens L6 may have a positive refractive power. The seventh lens L7 may have a positive refractive power, the eighth lens L8 has a positive refractive power, the ninth lens L9 has a negative refractive power, the tenth lens L10 has a negative refractive power, and the eleventh lens L11 has a positive refractive power.

Further, the object-side surface S1 of the first lens L1 is convex at the near optical axis O, and the image-side surface S2 of the first lens L1 is concave at the near optical axis O; the object-side surface S3 and the image-side surface S4 of the second lens L2 are convex and concave respectively at the near optical axis O; the object-side surface S5 and the image-side surface S6 of the third lens L3 are both concave at the near optical axis O; the object-side surface S7 and the image-side surface S8 of the fourth lens L4 are both convex at the near optical axis O; the object-side surface S9 and the image-side surface S10 of the fifth lens L5 are both concave at the near optical axis O; the object-side surface S11 of the sixth lens L6 is convex at the near optical axis O, and the image-side surface S12 of the sixth lens L6 is both convex at the near optical axis O. The object-side surface S13 and the image-side surface S14 of the seventh lens L7 are both convex at the near optical axis O. The object-side surface S15 and the image-side surface S16 of the eighth lens L8 are respectively concave and convex at the near optical axis O. The object-side surface S17 and the image-side surface S18 of the ninth lens L9 are concave and convex surfaces respectively at the near optical axis O, the object-side surface S19 and the image-side surface S20 of the tenth lens L10 are concave and convex surfaces respectively at the near optical axis O, and the object-side surface S21 and the image-side surface S22 of the eleventh lens L11 are convex and concave surfaces respectively at the near optical axis O.

Specifically, taking the effective focal length f=7.455mm of the optical lens 100, the aperture number FNO=1.65 of the optical lens 100, and the field of view FOVm=138deg of the optical lens 100 as an example, other parameters of the optical lens 100 are given in Table 3 below. And the definition of each parameter can be derived from the description of the aforementioned embodiment, and will not be repeated here. It can be understood that the units of the Y radius, thickness, and focal length in Table 3 are all mm. And the refractive index and Abbe number in Table 3 are obtained at a reference wavelength of 587.6nm, and the focal length is obtained at a reference wavelength of 555nm. Table 4 below gives the high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18 and A20 that can be used for each aspherical lens in the second embodiment.

Table 3

Table 4

Please refer to FIG. 4 . It can be seen from the longitudinal spherical aberration curve (A), the astigmatism curve (B) and the distortion curve (C) in FIG. 4 that the longitudinal spherical aberration, astigmatism and distortion of the optical lens 100 are well controlled, so that the optical lens 100 of this embodiment has good imaging quality. In addition, the wavelengths corresponding to the curves in FIG. 4 (A), FIG. 4 (B) and FIG. 4 (C) can refer to the contents described in FIG. 2 (A), FIG. 2 (B) and FIG. 2 (C) in the first embodiment, which will not be repeated here.

Third embodiment

The structural schematic diagram of the optical lens 100 disclosed in the third embodiment of the present application is shown in FIG5 , and the optical lens 100 includes a first lens L1, a second lens L2, an aperture 102, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a ninth lens L9, a tenth lens L10, an eleventh lens L11, and an infrared filter 12, which are sequentially arranged along the optical axis O from the object side to the image side. Among them, the first lens L1 has a negative refractive power, the second lens L2 has a negative refractive power, the third lens L3 has a negative refractive power, the fourth lens L4 has a positive refractive power, the fifth lens L5 has a negative refractive power, and the sixth lens L6 may have a positive refractive power. The seventh lens L7 may have a positive refractive power, the eighth lens L8 has a positive refractive power, the ninth lens L9 has a negative refractive power, the tenth lens L10 has a negative refractive power, and the eleventh lens L11 has a positive refractive power.

Further, the object-side surface S1 of the first lens L1 is convex at the near optical axis O, and the image-side surface S2 of the first lens L1 is concave at the near optical axis O; the object-side surface S3 and the image-side surface S4 of the second lens L2 are convex and concave at the near optical axis O, respectively; the object-side surface S5 and the image-side surface S6 of the third lens L3 are both concave at the near optical axis O; the object-side surface S7 and the image-side surface S8 of the fourth lens L4 are both convex at the near optical axis O; the object-side surface S9 and the image-side surface S10 of the fifth lens L5 are concave and convex at the near optical axis O, respectively; the object-side surface S11 of the sixth lens L6 is convex at the near optical axis O, and the image-side surface S12 of the sixth lens L6 is convex and concave at the near optical axis O, respectively. The object-side surface S13 and the image-side surface S14 of the seventh lens L7 are both convex at the near optical axis O. The object-side surface S15 and the image-side surface S16 of the eighth lens L8 are both convex at the near optical axis O. The object-side surface S17 and the image-side surface S18 of the ninth lens L9 are both concave surfaces at the near optical axis O, the object-side surface S19 and the image-side surface S20 of the tenth lens L10 are both concave surfaces at the near optical axis O, and the object-side surface S21 and the image-side surface S22 of the eleventh lens L11 are both convex surfaces at the near optical axis O.

Specifically, taking the effective focal length f=6.5mm of the optical lens 100, the aperture number FNO=1.61 of the optical lens 100, and the field of view FOVm=134deg of the optical lens 100 as an example, other parameters of the optical lens 100 are given in Table 5 below. And the definition of each parameter can be derived from the description of the aforementioned embodiment, and will not be repeated here. It can be understood that the units of the Y radius, thickness, and focal length in Table 5 are all mm. And the refractive index and Abbe number in Table 5 are obtained at a reference wavelength of 587.6nm, and the focal length is obtained at a reference wavelength of 555nm. Table 6 below gives the high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for each aspherical lens in the third embodiment.

Table 5

Table 6

Please refer to FIG. 6 . It can be seen from the longitudinal spherical aberration curve (A), the astigmatism curve (B) and the distortion curve (C) in FIG. 6 that the longitudinal spherical aberration, astigmatism and distortion of the optical lens 100 are well controlled, so that the optical lens 100 of this embodiment has good imaging quality. In addition, the wavelengths corresponding to the curves in FIG. 6 (A), FIG. 6 (B) and FIG. 6 (C) can refer to the contents described in FIG. 2 (A), FIG. 2 (B) and FIG. 2 (C) in the first embodiment, which will not be repeated here.

Fourth embodiment

The structural schematic diagram of the optical lens 100 disclosed in the fourth embodiment of the present application is shown in FIG7 , and the optical lens 100 includes a first lens L1, a second lens L2, an aperture 102, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a ninth lens L9, a tenth lens L10, an eleventh lens L11, and an infrared filter 12, which are sequentially arranged along the optical axis O from the object side to the image side. Among them, the first lens L1 has a negative refractive power, the second lens L2 has a negative refractive power, the third lens L3 has a positive refractive power, the fourth lens L4 has a negative refractive power, the fifth lens L5 has a positive refractive power, and the sixth lens L6 may have a positive refractive power. The seventh lens L7 may have a positive refractive power, the eighth lens L8 has a negative refractive power, the ninth lens L9 has a positive refractive power, the tenth lens L10 has a negative refractive power, and the eleventh lens L11 has a positive refractive power.

Further, the object-side surface S1 of the first lens L1 is convex at the near optical axis O, and the image-side surface S2 of the first lens L1 is concave at the near optical axis O; the object-side surface S3 and the image-side surface S4 of the second lens L2 are convex and concave respectively at the near optical axis O; the object-side surface S5 and the image-side surface S6 of the third lens L3 are concave and convex respectively at the near optical axis O; the object-side surface S7 and the image-side surface S8 of the fourth lens L4 are both convex at the near optical axis O; the object-side surface S9 and the image-side surface S10 of the fifth lens L5 are both convex at the near optical axis O; the object-side surface S11 of the sixth lens L6 is convex at the near optical axis O, and the image-side surface S12 of the sixth lens L6 is both convex at the near optical axis O. The object-side surface S13 and the image-side surface S14 of the seventh lens L7 are both convex at the near optical axis O. The object-side surface S15 and the image-side surface S16 of the eighth lens L8 are both concave at the near optical axis O. The object-side surface S17 and the image-side surface S18 of the ninth lens L9 are convex and concave respectively at the near optical axis O, the object-side surface S19 and the image-side surface S20 of the tenth lens L10 are both concave at the near optical axis O, and the object-side surface S21 and the image-side surface S22 of the eleventh lens L11 are convex and concave respectively at the near optical axis O.

Specifically, taking the effective focal length f=7.759mm of the optical lens 100, the aperture number FNO=1.75 of the optical lens 100, and the field of view FOVm=145deg of the optical lens 100 as an example, other parameters of the optical lens 100 are given in Table 7 below. And the definition of each parameter can be derived from the description of the aforementioned embodiment, and will not be repeated here. It can be understood that the units of the Y radius, thickness, and focal length in Table 7 are all mm. And the refractive index and Abbe number in Table 7 are obtained at a reference wavelength of 587.6nm, and the focal length is obtained at a reference wavelength of 555nm. Table 8 below gives the high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for each aspherical lens in the fourth embodiment.

Table 7

Table 8

Please refer to FIG8 . It can be seen from the longitudinal spherical aberration curve (A), the astigmatism curve (B) and the distortion curve (C) in FIG8 that the longitudinal spherical aberration, astigmatism and distortion of the optical lens 100 are well controlled, so that the optical lens 100 of this embodiment has good imaging quality. In addition, the wavelengths corresponding to the curves in FIG8 (A), FIG8 (B) and FIG8 (C) can refer to the contents described in FIG2 (A), FIG2 (B) and FIG2 (C) in the first embodiment, which will not be repeated here.

Fifth embodiment

The structural schematic diagram of the optical lens 100 disclosed in the fifth embodiment of the present application is shown in FIG9 , and the optical lens 100 includes a first lens L1, a second lens L2, an aperture 102, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a ninth lens L9, a tenth lens L10, an eleventh lens L11, and an infrared filter 12, which are sequentially arranged along the optical axis O from the object side to the image side. Among them, the first lens L1 has a negative refractive power, the second lens L2 has a negative refractive power, the third lens L3 has a negative refractive power, the fourth lens L4 has a positive refractive power, the fifth lens L5 has a positive refractive power, and the sixth lens L6 may have a positive refractive power. The seventh lens L7 may have a negative refractive power, the eighth lens L8 has a positive refractive power, the ninth lens L9 has a negative refractive power, the tenth lens L10 has a positive refractive power, and the eleventh lens L11 has a positive refractive power.

Further, the object-side surface S1 of the first lens L1 is convex at the near optical axis O, and the image-side surface S2 of the first lens L1 is concave at the near optical axis O; the object-side surface S3 and the image-side surface S4 of the second lens L2 are both concave at the near optical axis O; the object-side surface S5 and the image-side surface S6 of the third lens L3 are both concave at the near optical axis O; the object-side surface S7 and the image-side surface S8 of the fourth lens L4 are convex and concave at the near optical axis O, respectively; the object-side surface S9 and the image-side surface S10 of the fifth lens L5 are convex and concave at the near optical axis O, respectively; the object-side surface S11 of the sixth lens L6 is convex at the near optical axis O, and the image-side surface S12 of the sixth lens L6 are convex and concave at the near optical axis O, respectively. The object-side surface S13 and the image-side surface S14 of the seventh lens L7 are convex and concave at the near optical axis O, respectively. The object-side surface S15 and the image-side surface S16 of the eighth lens L8 are both convex at the near optical axis O. The object-side surface S17 and the image-side surface S18 of the ninth lens L9 are both concave surfaces at the near optical axis O, the object-side surface S19 and the image-side surface S20 of the tenth lens L10 are concave surfaces and convex surfaces at the near optical axis O, respectively, and the object-side surface S21 and the image-side surface S22 of the eleventh lens L11 are convex surfaces and concave surfaces at the near optical axis O, respectively.

Specifically, taking the effective focal length f=8.022mm of the optical lens 100, the aperture number FNO=1.68 of the optical lens 100, and the field of view FOVm=135deg of the optical lens 100 as an example, other parameters of the optical lens 100 are given in Table 9 below. And the definition of each parameter can be derived from the description of the aforementioned embodiment, and will not be repeated here. It can be understood that the units of the Y radius, thickness, and focal length in Table 9 are all mm. And the refractive index and Abbe number in Table 9 are obtained at a reference wavelength of 587.6nm, and the focal length is obtained at a reference wavelength of 555nm. Table 10 below gives the high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for each aspherical lens in the fifth embodiment.

Table 9

Table 10

Please refer to FIG. 10 . It can be seen from the longitudinal spherical aberration curve (A), the astigmatism curve (B) and the distortion curve (C) in FIG. 10 that the longitudinal spherical aberration, astigmatism and distortion of the optical lens 100 are well controlled, so that the optical lens 100 of this embodiment has good imaging quality. In addition, the wavelengths corresponding to the curves in FIG. 10 (A), FIG. 10 (B) and FIG. 10 (C) can refer to the contents described in FIG. 2 (A), FIG. 2 (B) and FIG. 2 (C) in the first embodiment, which will not be repeated here.

Please refer to Table 11, which is a summary of the ratios of various relationship equations in the first to fifth embodiments of the present application.

Table 11

Relationship/Example First embodiment Second embodiment Third embodiment Fourth embodiment Fifth embodiment 35<(FOVm×f)/Ym<60(unit: deg) 54.249 48.074 40.324 53.574 50.606 4＜Ym/EPD＜6 4.510 4.737 5.350 4.737 4.482 6<CRA/SAGs111<18 (unit: deg/mm) 12.090 8.961 15.182 10.704 14.351 2.5<SD11/SAGs11<5 3.567 3.622 3.111 4.238 4.412 1＜Ym/SD11＜2.5 1.564 1.438 1.468 1.427 1.950 24＜TTL/FNO＜35(Unit: mm) 28.235 30.000 30.435 28.571 27.976 4.5＜f/CT1＜9 6.202 4.970 5.417 4.790 5.348 0.5＜f12/f＜2.5 1.420 1.491 1.404 1.437 1.139

Please refer to Figure 11. The present application also discloses a camera module 200, which includes a photosensitive chip 201 and an optical lens 100 as in any one of the first to sixth embodiments described above, wherein the photosensitive chip 201 is disposed on the image side of the optical lens 100. The optical lens 100 is used to receive the light signal of the object being photographed and project it onto the photosensitive chip 201, and the photosensitive chip 201 is used to convert the light signal corresponding to the object being photographed into an image signal, which will not be described in detail here. It can be understood that the camera module 200 having the above-mentioned optical lens 100 can achieve the effects of large aperture, large image surface, and miniaturized design to improve the imaging quality of the optical lens 100. Since the above-mentioned technical effects have been described in detail in the embodiments of the optical lens 100, they will not be described in detail here.

Please refer to Figure 12. The present application also discloses an electronic device 300, which includes a housing 301 and the above-mentioned camera module 200, and the camera module 200 is arranged in the housing 301. Among them, the electronic device 300 can be but not limited to a mobile phone, a tablet computer, a laptop computer, a smart watch, a monitor, a driving recorder, a reversing imager, etc. It can be understood that the electronic device 300 with the above-mentioned camera module 200 also has all the technical effects of the above-mentioned optical lens 100. That is, it can achieve the effects of large aperture, large image surface, and miniaturized design to improve the imaging quality of the optical lens 100. Since the above-mentioned technical effects have been described in detail in the embodiment of the optical lens 100, they will not be repeated here.

Please refer to Figure 13, the present application also discloses a car 400, which includes a car body 410 and the above-mentioned camera module 200, and the camera module 200 is arranged on the car body 410 to obtain image information. It can be understood that the car 400 with the above-mentioned camera module 200 also has all the technical effects of the above-mentioned optical lens 100. That is, the car with the camera module can be conducive to the car's acquisition of environmental information around the car body, provide a clear field of view for the driver's driving, and provide protection for the driver's safe driving. For example, when the camera module 200 of the present application is applied to the ADAS (Advanced Driving Assistance System) of the car, the camera module can accurately and real-time capture the information of the road surface (such as detecting objects, detecting light sources, detecting road signs, etc.) to provide ADAS analysis and judgment, and respond in time to provide protection for the safety of automatic driving. When the camera module is used in the driving recording system, it can provide a clear field of view for the driver's driving and provide protection for the driver's safe driving. Since the above technical effects have been described in detail in the embodiment of the optical lens 100, they will not be described again here.

The optical lens, camera module, electronic device and automobile disclosed in the embodiments of the present application are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the optical lens, camera module, electronic device and automobile of the present application and its core ideas. At the same time, for those skilled in the art, according to the ideas of the present application, there will be changes in the specific implementation methods and application scopes. In summary, the contents of this specification should not be understood as limiting the present application.

Claims (10)

1. An optical lens comprising a total of eleven lenses with refractive power, the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens, the tenth lens and the eleventh lens being arranged in this order from the object side to the image side along an optical axis;

the first lens element with negative refractive power has a convex object-side surface and a concave image-side surface at a paraxial region;

the second lens element with negative refractive power has a concave image-side surface at a paraxial region;

The third lens element with refractive power;

the fourth lens element with refractive power;

the fifth lens element with refractive power;

the sixth lens element with positive refractive power has a convex object-side surface at a paraxial region;

the seventh lens element with refractive power has a convex object-side surface at a paraxial region;

the eighth lens element with refractive power;

the ninth lens element with refractive power;

the tenth lens element with refractive power has a concave object-side surface at a paraxial region;

the eleventh lens element with positive refractive power has a convex object-side surface at a paraxial region;

the second lens, the sixth lens and the tenth lens are aspheric lenses, an image side surface of the eighth lens is in cemented connection with an object side surface of the ninth lens to form a cemented lens, and the optical lens further comprises a diaphragm, wherein the diaphragm is positioned between the fourth lens and the fifth lens, or between the fifth lens and the sixth lens;

the optical lens satisfies the following relation:

1＜Ym/SD11＜2.5；

4.5＜f/CT1＜9；

wherein Ym is an image height corresponding to a maximum field angle of the optical lens, SD11 is a maximum effective half-caliber of the object side surface of the first lens, f is an effective focal length of the optical lens, and CT1 is a thickness of the first lens on an optical axis.

2. The optical lens of claim 1, wherein: the optical lens satisfies the following relation:

35deg<(FOVm×f)/Ym<60deg；

where FOVm is the maximum field angle of the optical lens and f is the effective focal length of the optical lens.

3. The optical lens of claim 1, wherein: the optical lens satisfies the following relation:

4＜Ym/EPD＜6；

wherein EPD is the entrance pupil diameter of the optical lens.

4. The optical lens of claim 1, wherein: the optical lens satisfies the following relation:

6deg/mm<CRA/SAGs111<18deg/mm；

wherein CRA is the chief ray incidence angle of the optical lens, and sag 111 is the distance between the maximum effective aperture of the object side surface of the eleventh lens and the intersection point of the object side surface of the eleventh lens and the optical axis in the optical axis direction.

5. The optical lens of claim 1, wherein: the optical lens satisfies the following relation:

2.5<SD11/SAGs11<5；

the SAGs11 is a distance from the maximum effective caliber of the object side surface of the first lens to an intersection point of the object side surface of the first lens and the optical axis in the optical axis direction.

6. The optical lens of claim 1, wherein: the optical lens satisfies the following relation:

24mm＜TTL/FNO＜35mm；

Wherein TTL is the distance between the object side surface of the first lens and the imaging surface of the optical lens on the optical axis, and FNO is the f-number of the optical lens.

7. The optical lens of claim 1, wherein: the optical lens satisfies the following relation:

0.5＜f12/f＜2.5；

wherein f12 is a combined focal length of the first lens and the second lens, and f is an effective focal length of the optical lens.

8. A camera module, its characterized in that: the camera module comprises a photosensitive chip and the optical lens as claimed in any one of claims 1 to 7, wherein the photosensitive chip is arranged on the image side of the optical lens.

9. An electronic device, characterized in that: the electronic equipment comprises a shell and the camera module set according to claim 8, wherein the camera module set is arranged on the shell.

10. An automobile, characterized in that: the automobile comprises an automobile body and the camera module as claimed in claim 8, wherein the camera module is arranged on the automobile body.

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