CN114002821B

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

Info

Publication number: CN114002821B
Application number: CN202111464988.3A
Authority: CN
Inventors: 乐宇明; 请求不公布姓名; 朱志鹏
Original assignee: Jiangxi Jingchao Optical Co Ltd
Current assignee: Jiangxi Jingchao Optical Co Ltd
Priority date: 2021-12-03
Filing date: 2021-12-03
Publication date: 2023-07-04
Anticipated expiration: 2041-12-03
Also published as: CN114002821A

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 lens, camera module, electronic equipment and car

Technical Field

The application relates to the technical field of optical imaging, in particular to an optical lens, a camera module, electronic equipment and an automobile.

Background

In recent years, with the development of the vehicle-mounted industry, the technical requirements of an on-vehicle camera such as an ADAS (Advanced Driver Assistant System, advanced driving assistance system), a vehicle recorder, and a reverse image have been increasing. By taking an ADAS lens as an example, the ADAS lens can accurately grasp information of a road surface in real time (for example, detection objects, detection light sources, detection road marks and the like) to supply image analysis, can provide clear fields for driving of a driver in the aspect of driving records, can also clearly record detailed information and the like in the aspect of monitoring security, and provides corresponding technical support and application guarantee in the aspects of practical application, so that the demand of the market for the ADAS lens is increasing. However, the pixels of the ADAS lens in the related art are not high enough, and large-image-plane imaging cannot be realized, which makes it difficult to match the photosensitive chip with ultra-high pixels.

Disclosure of Invention

The embodiment of the application discloses an optical lens, a camera module, electronic equipment and an automobile, and can realize the imaging effect of a large image plane.

In order to achieve the above object, a first aspect of the present application discloses an optical lens including 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, which are disposed in order from an object side to an 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 located between the fourth lens and the fifth lens, or between the fifth lens and the sixth lens.

In the optical lens provided by the application, when the incident light passes through the first lens with negative refractive power, the object side surface and the image side surface of the first lens are matched with the surface designs of convex surfaces and concave surfaces at the paraxial region respectively, so that more incident light can enter the first lens, and the wide angle of the optical lens and the imaging effect of a large aperture can be realized; meanwhile, the object side surface and the image side surface of the first lens are respectively convex and concave at the paraxial region, so that the thickness of the first lens is reduced, and the overall thickness of the optical lens is reduced; meanwhile, the second lens with negative refractive power and an aspheric surface is arranged, and the design that the image side surface of the second lens is concave at a paraxial region is matched, so that the marginal aberration of light rays incident from a large angle through the first lens can be reduced, and the occurrence of field curvature is reduced; the design that the object side surface of the sixth lens element is convex at the paraxial region is favorable for reasonably distributing the positive refractive power of the optical lens element so as to provide the convergence capability of the optical lens element to main light rays. The design that the object side surface of the seventh lens element is convex at the paraxial region is beneficial to reducing the risk of ghost generation, while the design that the object side surface of the aspherical tenth lens element is concave at the paraxial region is beneficial to increasing the light entering amount of the optical lens element, thereby increasing the edge illuminance of the optical lens element. The eleventh lens element with positive refractive power has a convex object-side surface at a paraxial region, so that light rays can be smoothly incident into an imaging surface of the optical lens element, the image height of the optical lens element can be enlarged, a high-image effect is realized, and the imaging effect of the large-image surface can be realized by matching the optical lens element with a large-size photosensitive chip of the camera module when the optical lens element is applied to the camera module.

In addition, the second lens, the sixth lens and the tenth lens are aspheric lenses, and other lenses are spherical lenses, namely, the spherical lenses are combined with the aspheric lenses, so that the processing difficulty of the optical lens can be reduced, and the imaging quality of the optical lens can be guaranteed. The eighth lens and the ninth lens are connected in a gluing way to form a gluing lens, which is favorable for reducing chromatic aberration of the optical lens and correcting spherical aberration of the optical lens, thereby being favorable for improving resolution of the optical lens and further favorable for improving imaging quality of the optical lens.

In addition, the diaphragm is arranged between the fourth lens and the fifth lens or between the fifth lens and the sixth lens, that is, the mode of approximately arranging the diaphragm in the middle is adopted, so that the distortion generated by the optical lens can be reduced, and the expansion of the angle of view of the optical lens is facilitated.

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

35deg<(FOVm×f)/Ym<60deg；

where FOVm is the maximum field angle of the optical lens, ym is the image height corresponding to the maximum field angle of the optical lens, and f is the effective focal length of the optical lens.

When the relation is satisfied, the optical lens has a larger field angle, which is beneficial to realizing the large-image high effect of the optical lens, so that when the optical lens is applied to the camera module, the optical lens can be matched with a large-size chip of the camera module, and further the image surface brightness of the optical lens can be improved. When the angle of view of the optical lens is smaller than the lower limit of the relational expression, the wide-angle effect of the optical lens is difficult to achieve; when the relation upper limit is exceeded, the maximum image height of the optical lens is reduced, so that the field of view of the optical lens is reduced, and the large image height effect of the optical lens is not realized.

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.

The ratio of the image height to the entrance pupil diameter of the optical lens is limited, so that the improvement of the image plane brightness of the large-target-surface optical lens is facilitated, and the large aperture imaging is realized. When the upper limit of the relation is exceeded, the entrance pupil diameter of the optical lens is smaller, the width of the light beam emitted by the optical lens is reduced, and the improvement of the image plane brightness of the optical lens is not facilitated; when the lower limit of the relation is exceeded, the image surface area of the optical lens is smaller, so that the field of view of the optical lens is reduced, the optical lens is not matched with a large-size chip of an applied camera module, and then a dark angle is easily generated, and the imaging quality is affected.

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 caliber 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, namely the sagittal height of the object side surface of the eleventh lens.

The object side surface of the eleventh lens is prevented from being bent too much by controlling the sagittal height of the object side surface of the eleventh lens, so that the angle of light rays entering a photosensitive chip of a camera module applied to the optical lens is reduced, and the photosensitive performance is improved. When the object-side surface of the eleventh lens is lower than the lower limit of the relation, the sagittal height of the object-side surface of the eleventh lens is too large, so that the object-side surface of the eleventh lens is excessively bent, and the processing and the production are not facilitated; when the relation upper limit is exceeded, the incidence angle of the chief ray of the optical lens is larger, which is unfavorable for matching with the photosensitive chip of the camera module applied by the optical lens.

2.5<SD11/SAGs11<5；

The SD11 is the maximum effective half-caliber of the object side surface of the first lens, and the sag 11 is the distance from the maximum effective caliber of the object side surface of the first lens to the intersection point of the object side surface of the first lens and the optical axis in the optical axis direction, that is, the sagittal height of the object side surface of the first lens.

The control of the ratio relation of the maximum effective half caliber of the object side surface of the first lens to the sagittal height of the object side surface of the first lens is beneficial to controlling the surface shape of the object side surface of the first lens and the caliber of the head lens of the optical lens, so that the wide-angle effect is realized. When the object-side surface of the first lens is too curved, the processing and production difficulties of the first lens are increased, and meanwhile, the incidence of large-angle light rays to the optical lens is not facilitated, so that the imaging quality of the optical lens is affected; when the upper limit of the relation is exceeded, the caliber of the object side surface of the first lens is increased, which is unfavorable for compressing the volume of the whole lens group of the optical lens.

1＜Ym/SD11＜2.5；

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

The ratio of the image height corresponding to the maximum field angle of the optical lens to the maximum effective half caliber of the object side surface of the first lens is controlled, so that the caliber of the front end head of the optical lens can be ensured, the image height of the optical lens can be ensured, and the effect of large image height and small head can be realized. When the aperture of the head lens of the optical lens is smaller than the lower limit of the relation, the aperture of the head lens is enlarged due to the limitation of the installation space of the optical lens, so that the lens is not beneficial to meeting the installation requirements of small aperture and small size at the front end; when the upper limit of the relation is exceeded, the image height corresponding to the maximum field angle of the optical lens is too large, which is unfavorable for matching with a photosensitive chip of an image pickup module applied by the optical lens, influences the imaging effect, and simultaneously leads to the reduction of the optical illumination of the optical lens.

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, that is, the total length of the optical lens, and FNO is the f-number of the optical lens.

The ratio relation of the total length of the optical lens and the aperture number of the optical lens is reasonably controlled, so that the aperture of the optical lens is enlarged, and the large aperture and the miniaturization effect (the total length is beneficial to the realization of the miniaturization design) are realized. When the upper limit of the relation is exceeded, the total length of the optical lens is increased, which is not beneficial to the miniaturization design of the optical lens; when the aperture number of the optical lens is lower than the lower limit of the relation, the aperture number of the optical lens is reduced, so that the light entering quantity of the optical lens is insufficient, the optical illumination of the optical lens is reduced, the imaging effect of the optical lens is affected, and the large aperture imaging of the optical lens is not facilitated.

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, i.e. the center thickness of the first lens.

The central thickness of the first lens can be effectively controlled by controlling the ratio relation between the effective focal length of the optical lens and the central thickness of the first lens, and meanwhile, the whole lens group volume of the optical lens can be compressed by combining reasonable distribution of focal lengths, so that the total length of the optical lens is reduced, and the miniaturized design of the optical lens is realized. When the effective focal length of the optical lens is lower than the lower limit of the relation, the long-focus effect of the optical lens is not beneficial to realization; when the upper limit of the relation is exceeded, the central thickness of the first lens is reduced, so that light is influenced to be stably incident into the first lens, the wide angle of the optical lens is not facilitated, and meanwhile, the central thickness of the first lens is reduced, so that the center of the first lens is too thin and is easy to be stressed and broken, and the processing and the production of the first lens are not facilitated.

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.

The ratio relation between the combined focal length of the first lens and the second lens and the effective focal length of the optical lens is controlled, so that the converging capability of the front lens group of the optical lens to light beams is controlled, and meanwhile, the incidence of light rays with a large angle view field is also facilitated, and the wide angle of the optical lens is realized. When the upper limit of the relation is exceeded, the refractive power of the first lens and the second lens is insufficient, so that the large-angle light is difficult to be incident into the optical lens, and the range of the angle of view of the optical lens is not enlarged; when the lower limit of the relation is exceeded, the refractive powers of the first lens element and the second lens element are too strong, so that stronger astigmatism and chromatic aberration are easy to generate, and the high-resolution imaging characteristic of the optical lens is not facilitated.

In a second aspect, the application discloses a camera module, where the camera module includes a photosensitive chip and the optical lens according to the first aspect, and the photosensitive chip is disposed on an image side of the optical lens. The imaging module with the optical lens can achieve imaging effects of large aperture and large image plane.

In a third aspect, the application discloses an electronic device, where the electronic device includes a housing and a camera module set according to the second aspect, and the camera module set is disposed on the housing. The electronic equipment with the camera module can realize the imaging effect of a large aperture and a large image plane.

In a fourth aspect, the application discloses an automobile, the automobile includes automobile body and the module of making a video recording of above second aspect, make a video recording the module and locate the automobile body. The automobile with the camera module can achieve imaging effects of large aperture and large image plane.

Compared with the prior art, the beneficial effect of this application lies in:

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of an optical lens disclosed in a first embodiment of the present application;

fig. 2 is a longitudinal spherical aberration diagram (mm), astigmatic curve diagram (mm) and distortion curve diagram (%) of an optical lens disclosed in the first embodiment of the present application;

FIG. 3 is a schematic view of an optical lens disclosed in a second embodiment of the present application;

fig. 4 is a longitudinal spherical aberration diagram (mm), astigmatic curve diagram (mm) and distortion curve diagram (%) of an optical lens disclosed in the second embodiment of the present application;

fig. 5 is a schematic structural view of an optical lens disclosed in a third embodiment of the present application;

fig. 6 is a longitudinal spherical aberration diagram (mm), astigmatic curve diagram (mm) and distortion curve diagram (%) of an optical lens disclosed in a third embodiment of the present application;

fig. 7 is a schematic structural view of an optical lens disclosed in a fourth embodiment of the present application;

fig. 8 is a longitudinal spherical aberration diagram (mm), astigmatic curve diagram (mm) and distortion curve diagram (%) of an optical lens disclosed in a fourth embodiment of the present application;

fig. 9 is a schematic structural view of an optical lens disclosed in a fifth embodiment of the present application;

fig. 10 is a longitudinal spherical aberration diagram (mm), astigmatic curve diagram (mm) and distortion curve diagram (%) of an optical lens disclosed in the fifth embodiment of the present application;

FIG. 11 is a schematic view of a lens module disclosed in the present application;

FIG. 12 is a schematic diagram of the structure of an electronic device disclosed herein;

fig. 13 is a schematic structural view of the automobile disclosed in the present application.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe the present application and its embodiments and are not intended to limit the indicated device, element or component to a particular orientation or to be constructed and operated in a particular orientation.

Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "configured," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

Furthermore, the terms "first," "second," and the like, are used primarily to distinguish between different devices, elements, or components (the particular species and configurations may be the same or different), and are not used to indicate or imply the relative importance and number of devices, elements, or components indicated. Unless otherwise indicated, the meaning of "a plurality" is two or more.

The technical scheme of the present application will be further described with reference to examples and drawings.

Referring to fig. 1, according to a first aspect of the present application, an optical lens 100 is disclosed, and the optical lens 100 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 disposed from an object side to an image side along an optical axis O. In 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 in order from the object side of the first lens L1, and finally is imaged on the imaging surface 101 of the optical lens 100. Wherein the first lens element L1 has negative refractive power, the second lens element L2 has negative refractive power, and the third lens element L3 has positive refractive power or negative refractive power; the fourth lens element L4 with refractive power, e.g., positive refractive power or negative refractive power, the fifth lens element L5 with refractive power, e.g., positive refractive power or negative refractive power, and the sixth lens element L6 with positive refractive power; the seventh lens element L7 with positive refractive power, e.g., positive refractive power, the eighth lens element L8 with positive refractive power, the ninth lens element L9 with positive refractive power, the tenth lens element L10 with positive refractive power, and the eleventh lens element L11 with positive refractive power.

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

In some embodiments, among the first to eleventh lenses L1 to L11, the second, sixth and tenth lenses L2, L6 and L10 may be aspherical lenses, and the remaining lenses may be spherical lenses. The aspherical lens can reduce the processing difficulty of the lens, and can realize more complex surface design, so that the mode of the mixed design of the spherical lens and the aspherical lens is adopted, the lens processing difficulty of the optical lens 100 can be reduced, and the processing cost of the optical lens 100 can be reduced.

Further, since the optical lens 100 is used as a camera on a vehicle body in consideration of the application of the optical lens 100 to electronic devices such as in-vehicle devices and automobile recorders or in automobiles, a part of the lenses of the first lens L1 to the eleventh lens L11 may be glass lenses and a part of the lenses may be plastic lenses. Specifically, as can be seen from the foregoing, among the first lens L1 to the eleventh lens L11, the second lens L2, the sixth lens L6 and the tenth lens L10 are aspheric 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 spherical lenses, so the spherical lenses may be made of glass, and the aspheric lenses may be made of plastic or glass. Preferably, among the first to eleventh lenses L1 to L11, all lenses are glass lenses to reduce the influence of temperature on the lenses, thereby effectively ensuring the imaging effect of the lenses.

Further, the image side surface S16 of the eighth lens element L8 is cemented with the object side surface S17 of the ninth lens element L9 to form a cemented lens, thereby facilitating to reduce chromatic aberration of the optical lens 100 and correct spherical aberration of the optical lens 100, thereby facilitating to improve resolution of the optical lens 100 and further facilitating to improve imaging quality of the optical lens 100.

In some embodiments, the optical lens 100 further includes a diaphragm 102, where the diaphragm 102 may be an aperture diaphragm and/or a field diaphragm, 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, i.e., the diaphragm 102 is an approximately mid-stop diaphragm. The arrangement of the intermediate diaphragm is similar, so that the distortion generated by the optical lens 100 can be reduced, and the viewing angle of the optical lens 100 can be enlarged.

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, and the imaging quality is improved by filtering infrared light, so that the imaging is more in line with the visual experience of human eyes. It is to be understood that the infrared filter 12 may be made of an optical glass coating, or may be made of colored glass, or the infrared filter 12 made of other materials may be selected according to actual needs, and is not particularly limited in this embodiment.

In some embodiments, the optical lens 100 satisfies the following relationship: 35deg < (FOvm×f)/Ym <60deg; where FOVm is the maximum field angle of the optical lens 100, ym is the image height corresponding to the maximum field angle of the optical lens 100, and f is the effective focal length of the optical lens 100. When the above relation is satisfied, the optical lens 100 has a larger angle of view, which is beneficial to realizing a large image height effect of the optical lens 100, so that when the optical lens 100 is applied to an image pickup module, the optical lens 100 can be matched with a large-size chip of the image pickup module, and further the image plane brightness of the optical lens 100 can be improved. When the angle of view of the optical lens 100 is less than the lower limit of the relational expression, it becomes difficult to achieve the wide-angle effect of the optical lens 100; when the upper limit of the relation is exceeded, the maximum image height of the optical lens 100 becomes small, which results in a reduced field of view of the optical lens 100, and is not beneficial to realizing the large image height effect of the optical lens 100.

In some embodiments, the optical lens 100 satisfies the following relationship: ym/EPD is more than 4 and less than 6; where 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 defining the ratio of the image height to the entrance pupil diameter of the optical lens 100, it is advantageous to ensure the improvement of the image plane brightness of the large-target optical lens 100, thereby realizing large aperture imaging. When the upper limit of the above relation is exceeded, the entrance pupil diameter of the optical lens 100 is smaller, which reduces the width of the light beam incident by the optical lens 100, and is not beneficial to the improvement of the image plane brightness of the optical lens 100; when the lower limit of the above relation is exceeded, the image area of the optical lens 100 is smaller, which results in a reduced field of view of the optical lens 100, which is not beneficial to matching the optical lens 100 with a large-sized chip of an image capturing module to which the optical lens 100 is applied, and further results in easily generating a dark angle, which affects the imaging quality.

In some embodiments, the optical lens 100 satisfies the following relationship: 6deg/mm < CRA/SAGs111<18deg/mm; herein, CRA is the chief ray incidence angle of the optical lens 100, and SAGs111 is the distance between the maximum effective aperture of the object side surface S21 of the eleventh lens L11 and the intersection point of the object side surface S21 of the eleventh lens L11 and the optical axis O in the optical axis direction, 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 beneficial to reducing the angle of light incident into the photosensitive chip of the image pickup module applied to the optical lens 100 and improving the photosensitive performance. When the object-side surface S21 of the eleventh lens L11 is lower than the lower limit of the relation, the sagittal height of the object-side surface S21 of the eleventh lens L11 is too large, so that the object-side surface S21 of the eleventh lens L11 is excessively curved, which is not beneficial to processing and production; when the upper limit of the relation is exceeded, the incident angle of the chief ray of the optical lens 100 is larger, which is unfavorable for matching with the photosensitive chip of the image capturing 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; the SD11 is the maximum effective half-caliber of the object side surface S1 of the first lens L1, and the SAGs11 is the distance between the maximum effective caliber of the object side surface S1 of the first lens L1 and the intersection point 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 relation between the maximum effective half caliber of the object side surface S1 of the first lens L1 and the sagittal height of the object side surface S1 of the first lens L1, the plane shape of the object side surface S1 of the first lens L1 is favorably controlled, and the caliber of the head lens of the optical lens 100 is favorably controlled, so that the wide-angle effect is realized. When the angle is lower than the lower limit of the relation, the object side surface S1 of the first lens L1 is excessively curved, which increases the difficulty in processing and producing the first lens L1, and is also unfavorable for the incidence of light rays with a large angle to the optical lens 100, thereby affecting the imaging quality of the optical lens 100; when the upper limit of the relation is exceeded, the aperture of the object side surface S1 of the first lens L1 increases, which is unfavorable for compressing the volume of the entire lens group of the optical lens 100.

In some embodiments, the optical lens 100 satisfies the following relationship: ym/SD11 is more than 1 and less than 2.5; where Ym is the image height corresponding to the maximum field angle of the optical lens 100, and SD11 is the maximum effective half-caliber 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 half caliber of the object side surface S1 of the first lens L1, the front end caliber of the optical lens 100 can be ensured, the image height of the optical lens 100 can be ensured, and the large image height and small head effect can be realized. When the aperture of the head lens of the optical lens 100 is smaller than the lower limit of the relation, the aperture of the head lens is enlarged due to the limitation of the installation space of the optical lens 100, so that the aperture of the head lens is enlarged, and the optical lens 100 is not beneficial to meeting the installation requirements of small aperture and small size at the front end; when the upper limit of the relation is exceeded, the image height corresponding to the maximum field angle of the optical lens 100 is too large, which is unfavorable for matching with the photosensitive chip of the image capturing module applied by the optical lens 100, and affects the imaging effect, and at the same time, the optical illuminance of the optical lens is reduced.

In some embodiments, the optical lens 100 satisfies the following relationship: 24mm < TTL/FNO < 35mm; where 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, i.e., the total length of the optical lens 100, and FNO is the f-number of the optical lens 100. By reasonably controlling the ratio relationship between the total length of the optical lens 100 and the f-number of the optical lens 100, the aperture of the optical lens 100 is enlarged, and the large aperture and the miniaturization effect (the total length is favorable for realizing the miniaturization design) are realized. When the upper limit of the relation is exceeded, the total length of the optical lens 100 increases, which is not beneficial to the miniaturization design of the optical lens; when the f-number of the optical lens 100 is lower than the lower limit of the relation, the amount of light entering the optical lens 100 is insufficient, the optical illuminance of the optical lens 100 is reduced, the imaging effect of the optical lens 100 is affected, and the large aperture imaging of the optical lens 100 is not facilitated.

In some embodiments, the optical lens 100 satisfies the following relationship: f/CT1 is more than 4.5 and less than 9; where f is the effective focal length of the optical lens 100, and CT1 is the thickness of the first lens L1 on the optical axis O, i.e. the center thickness of the first lens L1. By controlling the ratio relationship between the effective focal length of the optical lens 100 and the central thickness of the first lens L1, the central thickness of the first lens L1 can be effectively controlled, and the overall lens group volume of the optical lens 100 can be compressed in combination with reasonable distribution of focal lengths, so that the overall length of the optical lens 100 is reduced, and the miniaturized design of the optical lens 100 is realized. When the effective focal length of the optical lens 100 is lower than the lower limit of the relation, the long-focus effect of the optical lens 100 is not realized; when the upper limit of the relation is exceeded, the central thickness of the first lens L1 becomes smaller, which affects the smooth incidence of the light to the first lens L1, and is unfavorable for the wide angle of the optical lens 100, and meanwhile, the central thickness of the first lens L1 becomes smaller, so that the center of the first lens L1 is too thin to be easily stressed and broken, which is unfavorable for the processing and production of the first lens L1.

In some embodiments, the optical lens 100 satisfies the following relationship: f12/f is more than 0.5 and less than 2.5; where f12 is a combined focal length of the first lens L1 and the second lens L2, and f is an effective focal length of the optical lens 100. By controlling the ratio relation between the combined focal length of the first lens L1 and the second lens L2 and the effective focal length of the optical lens 100, the converging capability of the front lens group of the optical lens 100 to the light beam is controlled, and meanwhile, the wide angle of the optical lens 100 is realized. When the upper limit of the relation is exceeded, the refractive powers of the first lens element L1 and the second lens element L2 are insufficient, so that the light beam with a large angle is difficult to be incident on the optical lens 100, which is not beneficial to expand the viewing angle range of the optical lens 100; when the lower limit of the relation is exceeded, the refractive powers of the first lens element L1 and the second lens element L2 are too high, so that strong astigmatism and chromatic aberration are likely to occur, which is not beneficial to the realization of the high-resolution imaging of the optical lens 100.

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

First embodiment

As shown in fig. 1, the optical lens 100 according to the first embodiment of the present application includes a first lens L1, a second lens L2, a stop 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 disposed from an object side to an image side along an optical axis O. The first lens element L1 with negative refractive power, the second lens element L2 with negative refractive power, the third lens element L3 with negative refractive power, the fourth lens element L4 with positive refractive power, the fifth lens element L5 with positive refractive power, and the sixth lens element L6 with positive refractive power. The seventh lens element L7 with positive refractive power, the eighth lens element L8 with positive refractive power, the ninth lens element L9 with negative refractive power, the tenth lens element L10 with negative refractive power, and the eleventh lens element L11 with positive refractive power.

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

Specifically, taking the effective focal length f=8.062 mm of the optical lens 100, the f-number fno=1.9 of the optical lens 100, and the maximum field angle fovm=144 deg of the optical lens 100 as examples, other parameters of the optical lens 100 are given in table 1 below. The elements from the object side to the image side are sequentially arranged in the order of the elements from top to bottom in table 1 along the optical axis O of the optical lens 100. In the same lens element, the surface with smaller surface number is the object-side surface of the lens element, and the surface with larger surface number is the image-side surface of the lens element, i.e., the

surface numbers

1 and 2 correspond to the object-side surface S1 and the image-side surface S2 of the first lens element L1, respectively. The radius Y 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 row of the lens is the thickness of the lens on the optical axis, and the second value is the distance from the image side surface of the lens to the latter surface on the optical axis. The value of the diaphragm in the parameter array of the thickness is the distance between the diaphragm and the vertex of the latter surface (the vertex refers to the intersection point of the surface and the optical axis) on the optical axis, the direction from the object side surface of the first lens to the image side surface of the last lens is defaulting to the positive direction of the optical axis, when the value is negative, the diaphragm is arranged on the image side of the vertex of the latter surface, and when the thickness of the diaphragm is positive, the diaphragm is arranged on the object side of the vertex of the latter surface. It is understood that the units of Y radius, thickness, and focal length in Table 1 are all mm. And refractive index, abbe number in table 1 were obtained at reference wavelength 587.6nm, and focal length in table 1 was obtained at reference wavelength 555 nm.

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

wherein x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at the position with the height h along the optical axis O direction; c is the curvature of the aspherical surface at the optical axis O, c=1/Y (i.e., paraxial curvature c is the inverse of the radius of curvature Y in table 1 above); k is a conical coefficient; ai is the correction coefficient of the i-th order of the aspherical surface. The higher order coefficients A4, A6, A8, a10, a12, a14, a16, a18, and a20 that can be used for each of the aspherical lenses in the first embodiment are given in table 2 below.

TABLE 1

TABLE 2

Referring to fig. 2 (a), fig. 2 (a) shows a longitudinal spherical aberration diagram of the optical lens 100 of the first embodiment at wavelengths of 435.0000nm, 471.1327nm, 510.0000nm, 555.0000nm, 610.0000 and 650.0000 nm. In fig. 2 (a), the abscissa along the X-axis direction represents the focus shift, and the ordinate along the Y-axis direction represents the normalized field of view. As can be seen from fig. 2 (a), the optical lens 100 in the first embodiment has a better spherical aberration value, which indicates that the optical lens 100 in the present embodiment has a better imaging quality.

Referring to fig. 2 (B), fig. 2 (B) is an astigmatic diagram of the optical lens 100 at a wavelength of 555.0000nm in the first embodiment. Wherein, the abscissa along the X-axis direction represents focus offset, and the ordinate along the Y-axis direction represents image height in mm. The astigmatic curves represent the meridional imaging plane curvature T and the sagittal imaging plane curvature S, and it can be seen from fig. 2 (B) that at this wavelength, the astigmatism of the optical lens 100 is well compensated.

Referring to fig. 2 (C), fig. 2 (C) is a graph of distortion of the optical lens 100 at a wavelength of 555.0000nm in the first embodiment. Wherein, the abscissa along the X-axis direction represents distortion, and the ordinate along the Y-axis direction represents image height in mm. As can be seen from fig. 2 (C), the distortion of the optical lens 100 is well corrected at the wavelength 555.0000 nm.

Second embodiment

As shown in fig. 3, a schematic structural diagram of an optical lens 100 according to a second embodiment of the present application, the optical lens 100 includes a first lens L1, a second lens L2, a stop 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 disposed from an object side to an image side along an optical axis O. The first lens element L1 with negative refractive power, the second lens element L2 with negative refractive power, the third lens element L3 with negative refractive power, the fourth lens element L4 with positive refractive power, the fifth lens element L5 with negative refractive power, and the sixth lens element L6 with positive refractive power. The seventh lens element L7 with positive refractive power, the eighth lens element L8 with positive refractive power, the ninth lens element L9 with negative refractive power, the tenth lens element L10 with negative refractive power, and the eleventh lens element L11 with positive refractive power.

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

Specifically, taking the effective focal length f= 7.455mm of the optical lens 100, the f-number fno=1.65 of the optical lens 100, and the field angle fovm=138 deg of the optical lens 100 as examples, 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 foregoing embodiments, which is not repeated herein. It is understood that the units of Y radius, thickness, and focal length in Table 3 are all mm. And the refractive index, abbe number in Table 3 were obtained at a reference wavelength of 587.6nm, and the focal length was obtained at a reference wavelength of 555 nm. The higher order coefficients A4, A6, A8, a10, a12, a14, a16, a18, and a20 that can be used for each aspherical lens in the second embodiment are given in table 4 below.

TABLE 3 Table 3

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TABLE 4 Table 4

Referring to fig. 4, as shown in fig. 4, the longitudinal spherical aberration curve (a), the astigmatic curve (B) and the distortion curve (C) of the optical lens 100 are well controlled, so that the optical lens 100 of the embodiment has good imaging quality. In addition, the wavelengths corresponding to the curves in fig. 4 (a), 4 (B) and 4 (C) may refer to the contents described in the first embodiment in fig. 2 (a), 2 (B) and 2 (C), and will not be repeated here.

Third embodiment

As shown in fig. 5, the optical lens 100 according to the third embodiment of the present application includes a first lens L1, a second lens L2, a stop 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 disposed from an object side to an image side along an optical axis O. The first lens element L1 with negative refractive power, the second lens element L2 with negative refractive power, the third lens element L3 with negative refractive power, the fourth lens element L4 with positive refractive power, the fifth lens element L5 with negative refractive power, and the sixth lens element L6 with positive refractive power. The seventh lens element L7 with positive refractive power, the eighth lens element L8 with positive refractive power, the ninth lens element L9 with negative refractive power, the tenth lens element L10 with negative refractive power, and the eleventh lens element L11 with positive refractive power.

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

Specifically, taking the effective focal length f=6.5 mm of the optical lens 100, the f-number fno=1.61 of the optical lens 100, and the field angle fovm=134 deg of the optical lens 100 as examples, 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 foregoing embodiments, which is not repeated herein. It is understood that the units of Y radius, thickness, and focal length in Table 5 are all mm. And the refractive index and Abbe number in Table 5 were obtained at a reference wavelength of 587.6nm, and the focal length was obtained at a reference wavelength of 555 nm. The higher order coefficients A4, A6, A8, a10, a12, a14, a16, a18, and a20 that can be used for each of the aspherical lenses in the third embodiment are given in table 6 below.

TABLE 5

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TABLE 6

Referring to fig. 6, as can be seen from the (a) longitudinal spherical aberration curve, the (B) astigmatic curve, and the (C) distortion curve in fig. 6, the longitudinal spherical aberration, astigmatism, and distortion of the optical lens 100 are well controlled, so that the optical lens 100 of the embodiment has good imaging quality. In addition, regarding the wavelengths corresponding to the curves in fig. 6 (a), 6 (B) and 6 (C), reference may be made to what is described in the first embodiment with respect to fig. 2 (a), 2 (B) and 2 (C), and the description thereof will be omitted here.

Fourth embodiment

As shown in fig. 7, a schematic structural diagram of an optical lens 100 according to a fourth embodiment of the present application, the optical lens 100 includes a first lens L1, a second lens L2, a stop 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 disposed from an object side to an image side along an optical axis O. The first lens element L1 with negative refractive power, the second lens element L2 with negative refractive power, the third lens element L3 with positive refractive power, the fourth lens element L4 with negative refractive power, the fifth lens element L5 with positive refractive power, and the sixth lens element L6 with positive refractive power. The seventh lens element L7 with positive refractive power, the eighth lens element L8 with negative refractive power, the ninth lens element L9 with positive refractive power, the tenth lens element L10 with negative refractive power, and the eleventh lens element L11 with positive refractive power.

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

Specifically, taking the effective focal length f= 7.759mm of the optical lens 100, the f-number fno=1.75 of the optical lens 100, and the field angle fovm=145 deg of the optical lens 100 as examples, 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 foregoing embodiments, which is not repeated herein. It is understood that the units of Y radius, thickness, and focal length in Table 7 are all mm. And the refractive index, abbe number in Table 7 were obtained at a reference wavelength of 587.6nm, and the focal length was obtained at a reference wavelength of 555 nm. The higher order coefficients A4, A6, A8, a10, a12, a14, a16, a18, and a20 that can be used for each aspherical lens in the fourth embodiment are given in table 8 below.

TABLE 7

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TABLE 8

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Referring to fig. 8, as shown in fig. 8, the longitudinal spherical aberration curve (a), the astigmatic curve (B) and the distortion curve (C) of the optical lens 100 are well controlled, so that the optical lens 100 of the embodiment has good imaging quality. In addition, regarding the wavelengths corresponding to the curves in fig. 8 (a), 8 (B) and 8 (C), reference may be made to what is described in the first embodiment with respect to fig. 2 (a), 2 (B) and 2 (C), and the description thereof will be omitted here.

Fifth embodiment

As shown in fig. 9, a schematic structural diagram of an optical lens 100 according to a fifth embodiment of the present application, the optical lens 100 includes a first lens L1, a second lens L2, a stop 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 disposed from an object side to an image side along an optical axis O. The first lens element L1 with negative refractive power, the second lens element L2 with negative refractive power, the third lens element L3 with negative refractive power, the fourth lens element L4 with positive refractive power, the fifth lens element L5 with positive refractive power, and the sixth lens element L6 with positive refractive power. The seventh lens element L7 with negative refractive power, the eighth lens element L8 with positive refractive power, the ninth lens element L9 with negative refractive power, the tenth lens element L10 with positive refractive power, and the eleventh lens element L11 with positive refractive power.

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

Specifically, taking the effective focal length f=8.022 mm of the optical lens 100, the f-number fno=1.68 of the optical lens 100, and the field angle fovm=135 deg of the optical lens 100 as examples, 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 foregoing embodiments, which is not repeated herein. It is understood that the units of Y radius, thickness, and focal length in Table 9 are all mm. And the refractive index, abbe number in Table 9 were obtained at a reference wavelength of 587.6nm, and the focal length was obtained at a reference wavelength of 555 nm. The following table 10 gives the higher 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

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Table 10

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Referring to fig. 10, as can be seen from the (a) longitudinal spherical aberration curve, the (B) astigmatic curve, and the (C) distortion curve in fig. 10, the longitudinal spherical aberration, astigmatism, and distortion of the optical lens 100 are well controlled, so that the optical lens 100 of the embodiment has good imaging quality. In addition, regarding the wavelengths corresponding to the curves in fig. 10 (a), 10 (B) and 10 (C), reference may be made to what is described in the first embodiment with respect to fig. 2 (a), 2 (B) and 2 (C), and the description thereof will be omitted here.

Referring to table 11, table 11 is a summary of the ratios of the relationships in the first embodiment to the fifth embodiment of the present application.

TABLE 11

Relation/embodiment	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

Referring to fig. 11, the present application further discloses an image capturing module 200, which includes a photosensitive chip 201 and the optical lens 100 according to any one of the first to sixth embodiments, where the photosensitive chip 201 is disposed on an image side of the optical lens 100. The optical lens 100 is configured to receive an optical signal of a subject and project the optical signal onto the photosensitive chip 201, and the photosensitive chip 201 is configured to convert the optical signal corresponding to the subject into an image signal, which is not described herein. It can be appreciated that the image capturing module 200 with the optical lens 100 can achieve the effects of large aperture, large image plane and miniaturized design, so as to improve the imaging quality of the optical lens 100. Since the above technical effects are described in detail in the embodiment of the optical lens 100, the description thereof is omitted here.

Referring to fig. 12, the present application further discloses an electronic device 300, where the electronic device 300 includes a housing 301 and the above-mentioned camera module 200, and the camera module 200 is disposed in the housing 301. The electronic device 300 may be, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a smart watch, a monitor, a vehicle recorder, a car backing image device, etc. It can be appreciated that the electronic device 300 having the image capturing module 200 also has all the technical effects of the optical lens 100. That is, the effect of large aperture, large image plane, and miniaturized design can be achieved to improve the imaging quality of the optical lens 100. Since the above technical effects are described in detail in the embodiment of the optical lens 100, the description thereof is omitted here.

Referring to fig. 13, the present application further discloses an automobile 400, where the automobile 400 includes a vehicle body 410 and the camera module 200, and the camera module 200 is disposed on the vehicle body 410 to obtain image information. It can be appreciated that the automobile 400 having the image capturing module 200 also has all the technical effects of the optical lens 100. That is, the automobile with the camera module can be favorable for the acquisition of the environmental information around the automobile body, so that clear vision is provided for driving of a driver, and safety driving of the driver is ensured. For example, when the camera module 200 of the present application is applied to an ADAS (Advanced Driving Assistance System ) of an automobile, the camera module can accurately and real-timely capture information (such as detected objects, detected light sources, detected road signs, etc.) on the road surface, supply ADAS analysis and judgment, and respond in time, thereby providing a guarantee for automatic driving safety. When the camera module is applied to a driving recording system, clear visual fields can be provided for driving of a driver, and safety driving of the driver is guaranteed. Since the above technical effects are described in detail in the embodiment of the optical lens 100, the description thereof is omitted here.

The optical lens, the camera module, the electronic device and the automobile disclosed in the embodiments of the present application are described in detail, and specific examples are applied to the description of the principles and the implementation manners of the present application, where the description of the above embodiments is only used to help understand the optical lens, the camera module, the electronic device and the automobile of the present application and the core ideas thereof; meanwhile, as those skilled in the art will vary in the specific embodiments and application scope according to the ideas of the present application, the contents of the present specification should not be construed as limiting the present application in summary.

Claims

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 third lens element with refractive power;

the fourth lens element with refractive power;

the fifth lens element with refractive power;

the eighth lens element with refractive power;

the ninth lens element with refractive power;

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；

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.