CN114002821A

CN114002821A - Optical lens, camera module, electronic equipment and automobile

Info

Publication number: CN114002821A
Application number: CN202111464988.3A
Authority: CN
Inventors: 乐宇明; 朱志鹏; 其他发明人请求不公开姓名
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: 2022-02-01
Anticipated expiration: 2041-12-03
Also published as: CN114002821B

Abstract

An optical lens, a camera module, an electronic device and an automobile are provided, the optical lens includes 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 sequentially arranged along an optical axis from an object side to an image side, the first lens element has negative refractive power, an object side surface and an image side surface of the first lens element are convex and concave at a paraxial region, the second lens element has negative refractive power, the image side surface of the second lens element is concave at the paraxial region, the third, fourth and fifth lens elements have refractive power, the sixth lens element has positive refractive power, the object side surface of the sixth lens element is convex at the paraxial region, the seventh, eighth, ninth and tenth lens elements have refractive power, the object side surface of the seventh lens element and the paraxial region are convex, the object side surface of the tenth lens element is concave at the paraxial region, and the eleventh lens element has positive refractive power. The application discloses optical lens, camera module, electronic equipment and car can realize big image plane formation of image effect on the basis of compromise miniaturized design requirement.

Description

Optical lens, camera module, electronic equipment and automobile

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 in-vehicle industry, the technical requirements of in-vehicle cameras such as ADAS (Advanced Driver assistance System), drive recorders, and back-up images have been increasing. Taking the ADAS lens as an example, the ADAS lens can accurately capture information of a road surface in real time (for example, detection of an object, a detection light source, detection of a road sign and the like) and provide the information for image analysis, can provide a clear view for driving of a driver in the aspect of driving record, can clearly record detailed information in the aspect of monitoring security and the like, and provides corresponding technical support and application guarantee in the aspect of practical application, so that the market demand for the ADAS lens is gradually increased. However, the pixels of the ADAS lens in the related art are not high enough to realize large image plane imaging, so that it is difficult to match a 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, which can realize the imaging effect of a large image plane.

In order to achieve the above object, in a first aspect, 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 arranged 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 paraxial region thereof;

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

the seventh lens element with refractive power has a convex object-side surface at 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, the image-side surface of the eighth lens is connected with the object-side surface of the ninth lens in a gluing manner 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 the diaphragm is located between the fifth lens and the sixth lens.

In the optical lens provided by the application, when incident light passes through the first lens element with negative refractive power, the object side surface and the image side surface of the first lens element are respectively convex and concave in the paraxial region, so that more incident light can enter the first lens element, and the wide-angle and large-aperture imaging effects of the optical lens 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, which is beneficial to reducing the thickness of the first lens and reducing the overall thickness of the optical lens; 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 the position close to the optical axis is matched, so that the edge aberration of light rays incident at a large angle through the first lens can be favorably reduced, and the occurrence of field curvature is reduced; the design that the sixth lens element with positive refractive power is aspheric and 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, thereby providing the convergence capability of the optical lens element on 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 generating ghost images, and the design that the object side surface of the aspheric tenth lens element is concave at the paraxial region is beneficial to increasing the light entering amount of the optical lens, so that the marginal illumination of the optical lens is increased. The eleventh lens element with positive refractive power has a convex object-side surface at a paraxial region, which is beneficial for light to more gently enter an imaging surface of the optical lens, so that the image height of the optical lens can be enlarged, a large image height effect can be realized, and the eleventh lens element can be matched with a large-size photosensitive chip of a camera module when the optical lens is applied to the camera module, thereby realizing a large image surface imaging effect.

In addition, this application adopts second lens, sixth lens, tenth lens to be aspheric lens, and other lens are spherical lens's mode, promptly, adopts spherical lens and aspheric lens to combine, can enough reduce optical lens's the processing degree of difficulty, also is favorable to guaranteeing optical lens's imaging quality simultaneously. The eighth lens and the ninth lens are connected in a gluing mode to form the glued lens, so that chromatic aberration of the optical lens is reduced, spherical aberration of the optical lens is corrected, resolution of the optical lens is improved, and imaging quality of the optical lens is improved.

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

As an optional 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；

wherein FOvm is the maximum angle of view of the optical lens, Ym is the image height corresponding to the maximum angle of view 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 height effect of the optical lens, so that when the optical lens is applied to a camera module, the optical lens can be matched with a large-size chip of the camera module, and the image surface brightness of the optical lens is further beneficial to being 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 maximum image height of the optical lens exceeds the upper limit of the relational expression, the maximum image height of the optical lens is reduced, so that the field range of the optical lens is reduced, and the large image height effect of the optical lens is not realized.

4＜Ym/EPD＜6；

where 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 diameter of the entrance pupil of the optical lens is limited, so that the improvement of the image surface 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 diameter of the entrance pupil of the optical lens is smaller, so that the width of a light ray bundle emitted by the optical lens is reduced, and the improvement of the image surface brightness of the optical lens is not facilitated; when the image area of the optical lens exceeds the lower limit of the relational expression, the image area of the optical lens is small, so that the field range of the optical lens is reduced, the optical lens is not favorably matched with a large-size chip of a camera module applied by the optical lens, and a dark corner is easily generated to influence the imaging quality.

6deg/mm<CRA/SAGs111<18deg/mm；

the CRA is a chief ray incidence angle of the optical lens, and the SAGs111 is a distance in an optical axis direction from a maximum effective aperture of an object-side surface of the eleventh lens to an intersection point of the object-side surface of the eleventh lens and the optical axis, that is, a rise of an object-side surface of the eleventh lens.

The plane type of the object side surface of the eleventh lens can be effectively controlled by controlling the rise of the object side surface of the eleventh lens, so that the object side surface of the eleventh lens is not too curved, the processing and the production are facilitated, the angle of a photosensitive chip of a camera module applied by the optical lens is favorably reduced, and the photosensitive performance is improved. When the height of the object-side surface of the eleventh lens is lower than the lower limit of the relational expression, the rise of the object-side surface of the eleventh lens is too large, so that the object-side surface of the eleventh lens is too curved, and the processing and the production are not facilitated; when the angle exceeds the upper limit of the relation, the incident angle of the chief ray of the optical lens is large, which is not suitable for matching with the photosensitive chip of the camera module to which the optical lens is applied.

2.5<SD11/SAGs11<5；

wherein SD11 is the maximum effective half aperture of the object side surface of the first lens, SAGs11 is the distance in the optical axis direction from the maximum effective aperture 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, namely the rise of the object side surface of the first lens.

The ratio relation between the maximum effective semi-aperture of the object side surface of the first lens and the rise of the object side surface of the first lens is controlled, so that the control of the surface type of the object side surface of the first lens is facilitated, the aperture size of a head lens of an optical lens is facilitated, and the wide-angle effect is realized. When the optical axis is lower than the lower limit of the relational expression, the surface shape of the object side surface of the first lens is too curved, so that the processing and production difficulty of the first lens is increased, and meanwhile, the incidence of large-angle light rays to the optical lens is not facilitated, and the imaging quality of the optical lens is influenced; when the aperture of the object-side surface of the first lens element exceeds the upper limit of the relational expression, the aperture of the object-side surface of the first lens element is increased, which is not beneficial to compressing the volume of the whole lens group of the optical lens.

1＜Ym/SD11＜2.5；

where Ym is an image height corresponding to a maximum field angle of the optical lens, and SD11 is a maximum effective half aperture of the object-side surface 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 half aperture of the object side surface of the first lens, the image height of the optical lens can be ensured while the aperture of the front end head of the optical lens is ensured, and the effect of large image height and small head is realized. When the diameter of the head lens is smaller than the lower limit of the relational expression, the caliber of the head lens of the optical lens is increased, and the increase of the caliber of the head lens is limited by the installation space of the optical lens, so that the lens is not favorable for meeting the installation requirements of small caliber and small size at the front end; when the maximum angle of view of the optical lens exceeds the upper limit of the relational expression, the image height corresponding to the maximum angle of view of the optical lens is too large, which is not beneficial to matching with a photosensitive chip of a camera module applied by the optical lens, influences the imaging effect and simultaneously causes the optical illumination of the optical lens to be reduced.

24mm＜TTL/FNO＜35mm；

wherein, TTL is a distance on the optical axis from the object side surface of the first lens element to the image plane of the optical lens, that is, the total length of the optical lens, and FNO is the f-number of the optical lens.

The ratio relation between the total length of the optical lens and the diaphragm number of the optical lens is reasonably controlled, so that the diaphragm of the optical lens is favorably enlarged, and the large diaphragm and the miniaturization effect are realized (the total length is favorable for realizing the miniaturization design). 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 light quantity is lower than the lower limit of the relational expression, the diaphragm number of the optical lens is reduced, so that the light quantity of the optical lens is insufficient, the optical illumination of the optical lens is reduced, the imaging effect of the optical lens is influenced, and the large diaphragm imaging of the optical lens is not facilitated.

4.5＜f/CT1＜9；

where 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 ratio relation between the effective focal length of the optical lens and the central thickness of the first lens is controlled, so that the central thickness of the first lens can be effectively controlled, the volume of the whole lens group of the optical lens can be compressed by combining reasonable distribution of the focal length, the total length of the optical lens is reduced, and the miniaturization design of the optical lens is realized. When the effective focal length is lower than the lower limit of the relational expression, the effective focal length of the optical lens is reduced, which is not beneficial to realizing the long-focus effect of the optical lens; when the central thickness of the first lens is smaller than the upper limit of the relational expression, the light is influenced to be stably incident to the first lens, the wide angle of the optical lens is not facilitated, and meanwhile, the central thickness of the first lens is smaller, so that the center of the first lens is too thin and is easy to stress and break, 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.

By controlling the ratio relationship between the combined focal length of the first lens and the second lens and the effective focal length of the optical lens, the control of the convergence capacity of the front lens group of the optical lens to the light beams is facilitated, and meanwhile, the control of the incidence of the light rays with a large-angle view field is facilitated, so that the wide angle of the optical lens is realized. When the refractive power of the first lens element and the second lens element is insufficient, the large-angle light is difficult to enter the optical lens, which is not favorable for expanding the field angle range of the optical lens; when the refractive power of the first lens element and the second lens element is too strong, the first lens element and the second lens element are prone to generate strong astigmatism and chromatic aberration, which is not favorable for achieving the high-resolution imaging characteristic of the optical lens.

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

In a third aspect, the present application discloses an electronic device, which includes a housing and the camera module set as described in the second aspect, wherein 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 present application discloses an automobile, the automobile comprises an automobile body and a camera module according to the second aspect, wherein the camera module is arranged on the automobile body. The automobile with the camera module can realize the imaging effect of a large aperture and a large image surface.

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

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used 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 it is obvious for those skilled in the art to obtain other drawings without creative efforts.

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

fig. 2 is a longitudinal spherical aberration diagram (mm), an astigmatism diagram (mm), and a distortion diagram (%);

fig. 3 is a schematic structural diagram of an optical lens disclosed in the second embodiment of the present application;

fig. 4 is a longitudinal spherical aberration diagram (mm), an astigmatism diagram (mm), and a distortion diagram (%);

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

fig. 6 is a longitudinal spherical aberration diagram (mm), an astigmatism diagram (mm), and a distortion diagram (%);

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

fig. 8 is a longitudinal spherical aberration diagram (mm), an astigmatism diagram (mm), and a distortion diagram (%);

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

fig. 10 is a longitudinal spherical aberration diagram (mm), an astigmatism diagram (mm), and a distortion diagram (%);

fig. 11 is a schematic structural diagram of a lens module disclosed in the present application;

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

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

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

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

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship 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," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can 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 above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific nature and configuration may be the same or different), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.

The technical solution of the present application will be further described with reference to the following embodiments and the accompanying drawings.

Referring to fig. 1, according to a first aspect of the present disclosure, an optical lens 100 is disclosed, where 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 disposed in order from an object side to an image side along an optical axis O. During 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 sequence from the object side of the first lens L1, and is finally imaged on the imaging surface 101 of the optical lens 100. Wherein the first lens element L1 with negative refractive power, the second lens element L2 with negative refractive power, and the third lens element L3 with refractive power, such as positive refractive power or negative refractive power; the fourth lens element L4 with refractive power, such as positive refractive power or negative refractive power, the fifth lens element L5 with refractive power, such as positive refractive power or negative refractive power, the sixth lens element L6 with positive refractive power; the seventh lens element L7 with refractive power such as positive or negative refractive power, the eighth lens element L8 with positive or negative refractive power, the ninth lens element L9 with positive or negative refractive power, the tenth lens element L10 with positive or 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 of the second lens element L2 is concave or convex at the paraxial region thereof, and the image-side surface S4 of the second lens element L2 is concave at the paraxial region thereof; the object-side surface S5 of the third lens element L3 is concave or convex at the 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 may 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 may be concave or convex at a paraxial region O; the object-side surface S11 of the sixth lens element L6 is convex along the optical axis O, and the image-side surface S12 of the sixth lens element L6 is concave or convex along the optical axis O. The object-side surface S13 of the seventh lens element L7 is convex at the 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 the 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 through eleventh lenses L1 through L11, the second, sixth, and tenth lenses L2, L6, and L10 may be aspheric lenses, and the remaining lenses may be spherical lenses. The aspheric lens can reduce the processing difficulty of the lens, and meanwhile, the more complex surface type design can be realized, so that the mode of hybrid design of the spherical lens and the aspheric 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, in consideration of the fact that the optical lens 100 is often used in electronic devices such as an in-vehicle device and a drive recorder or in an automobile and is used as a camera on an automobile body, some of 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, 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 all spherical lenses, so that the spherical lenses can be made of glass, and the aspheric lenses can be made of plastic or glass. Preferably, all of the first lens L1 to the eleventh lens L11 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 L8 and the object-side surface S17 of the ninth lens L9 are cemented together to form a cemented lens, which is favorable for reducing chromatic aberration of the optical lens 100 and correcting spherical aberration of the optical lens 100, thereby being favorable for improving resolution of the optical lens 100 and further being favorable for improving imaging quality of the optical lens 100.

In some embodiments, the optical lens 100 further includes a stop 102, and the stop 102 may be an aperture stop and/or a field stop, which 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 an approximately mid-stop. The arrangement of the approximate mid-stop can reduce the distortion generated by the optical lens 100, and is also beneficial to enlarging 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 image plane 101 of the optical lens 100. The infrared filter 12 is selected for use, infrared light is filtered, imaging quality is improved, and imaging is more in line with visual experience of human eyes. It is understood that the infrared filter 12 may be made of an optical glass coating, a colored glass, or an infrared filter 12 made of other materials, which may 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 x f)/Ym <60 deg; where FOVm is the maximum angle of view of the optical lens 100, Ym is the image height corresponding to the maximum angle of view 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 field angle, 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 a camera module, the optical lens 100 can be adapted to a large-size chip of the camera module, and further, the image surface brightness of the optical lens 100 is beneficial to being improved. When the value is less than the lower limit of the relational expression, the angle of view of the optical lens 100 becomes small, and it becomes difficult to achieve the wide-angle effect of the optical lens 100; when the maximum image height of the optical lens 100 exceeds the upper limit of the relational expression, the maximum image height of the optical lens 100 is reduced, which results in a reduced field range of the optical lens 100, and is not favorable for 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 limiting the ratio of the image height to the entrance pupil diameter of the optical lens 100, the improvement of the image surface brightness of the large-target-surface optical lens 100 is facilitated, and therefore large-aperture imaging is achieved. When the upper limit of the relation is exceeded, the diameter of the entrance pupil of the optical lens 100 is small, so that the width of the light beam incident from the optical lens 100 is reduced, which is not beneficial to improving the image surface brightness of the optical lens 100; when the lower limit of the above relation is exceeded, the image plane area of the optical lens 100 is small, which results in a reduced field range of the optical lens 100, which is not favorable for matching the optical lens 100 with a large-sized chip of a camera module applied thereto, and thus a dark angle is easily generated, which affects the imaging quality.

In some embodiments, the optical lens 100 satisfies the following relationship: 6deg/mm < CRA/SAGs111<18 deg/mm; where CRA is the principal ray incidence angle of the optical lens 100, and SAGs111 is the distance in the optical axis direction from the maximum effective aperture of the object-side surface S21 of the eleventh lens L11 to the intersection point of the object-side surface S21 of the eleventh lens L11 and the optical axis O, that is, the rise of the object-side surface S21 of the eleventh lens L11. By controlling the rise 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, and the processing and production are facilitated, and meanwhile, the angle of a photosensitive chip of a camera module applied to the optical lens 100, which is irradiated by light, is also reduced, and the photosensitive performance is improved. When the height of the object-side surface S21 of the eleventh lens L11 is too large, the object-side surface S21 of the eleventh lens L11 is too curved, which is not favorable for processing and production; when the upper limit of the relationship is exceeded, the incident angle of the chief ray of the optical lens 100 is too large to match 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; where SD11 is the maximum effective half aperture of the object-side surface S1 of the first lens L1, and sag 11 is the distance in the optical axis direction from the maximum effective aperture of the object-side surface S1 of the first lens L1 to the intersection point of the object-side surface S1 of the first lens L1 and the optical axis O, that is, the rise of the object-side surface S1 of the first lens. By controlling the ratio of the maximum effective half aperture of the object-side surface S1 of the first lens L1 to the rise of the object-side surface S1 of the first lens L1, the surface shape of the object-side surface S1 of the first lens L1 and the aperture size of the head lens of the optical lens 100 are favorably controlled, and a wide-angle effect is achieved. When the optical axis is lower than the lower limit of the relational expression, the object-side surface S1 of the first lens L1 is too curved, which increases the difficulty in processing and producing the first lens L1, and is also not favorable for large-angle light to enter the optical lens 100, thereby affecting the imaging quality of the optical lens 100; on the other hand, if the upper limit of the relation is exceeded, the aperture of the object-side surface S1 of the first lens L1 increases, which is not favorable for compressing the volume of the entire lens group of the optical lens system 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 an image height corresponding to the maximum field angle of the optical lens 100, and SD11 is the maximum effective half-diameter 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 aperture of the object-side surface S1 of the first lens L1, the image height of the optical lens 100 can be ensured while the aperture of the front end of the optical lens 100 is ensured, and a large-image-height small-head effect is achieved. When the optical lens 100 is lower than the lower limit of the relational expression, the aperture of the head lens of the optical lens 100 is increased, and the increase of the aperture of the head lens is limited by the installation space of the optical lens 100, so that the optical lens 100 is not favorable for meeting the installation requirements of small aperture and small size at the front end; when the maximum angle of view of the optical lens 100 exceeds the upper limit of the relational expression, the image height corresponding to the maximum angle of view of the optical lens 100 is too large, which is not favorable for matching with a photosensitive chip of a camera module applied to the optical lens 100, affects the imaging effect, and simultaneously causes the optical illuminance of the optical lens to be reduced.

In some embodiments, the optical lens 100 satisfies the following relationship: TTL/FNO is more than 24mm and less than 35 mm; wherein, TTL is a distance from the object side surface S1 of the first lens element L1 to the image plane 101 of the optical lens 100 on the optical axis O, i.e., the total length of the optical lens 100, and FNO is an 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 can be increased, and the large aperture and the miniaturization effect can be realized (the total length is favorable for realizing the miniaturization design). When the upper limit of the relation is exceeded, the total length of the optical lens 100 is increased, which is not favorable for the miniaturization design of the optical lens; when the light quantity is lower than the lower limit of the relational expression, the diaphragm number of the optical lens 100 is reduced, which results in insufficient light input quantity of the optical lens 100, and the optical illumination of the optical lens 100 is reduced, thereby affecting the imaging effect of the optical lens 100 and being not beneficial to large-diaphragm imaging of the optical lens 100.

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 element L1 on the optical axis O, i.e., the center thickness of the first lens element 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, and the overall lens volume of the optical lens 100 can be compressed by combining with the reasonable distribution of the focal length, so that the total length of the optical lens 100 is reduced, and the miniaturization design of the optical lens 100 is realized. When the effective focal length is lower than the lower limit of the relational expression, the effective focal length of the optical lens 100 is reduced, which is not favorable for realizing the telephoto effect of the optical lens 100; when the upper limit of the relation is exceeded, the central thickness of the first lens L1 is reduced, which affects the smooth incidence of light to the first lens L1, and is not favorable for the wide angle of the optical lens 100, and meanwhile, the central thickness of the first lens L1 is reduced, which causes the center of the first lens L1 to be too thin and is easily broken by stress, and is not favorable 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 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, the light converging capability of the front lens group of the optical lens 100 to the light beam can be controlled, and the incidence of the light in the wide-angle field can be facilitated, so that the wide angle of the optical lens 100 can be realized. When the refractive power of the first lens element L1 and the refractive power of the second lens element L2 are insufficient, large-angle light is difficult to enter the optical lens 100, which is not favorable for expanding the field angle range of the optical lens 100; if the refractive power exceeds the lower limit of the relational expression, the refractive powers of the first lens element L1 and the second lens element L2 are too strong, so that strong astigmatism and chromatic aberration are likely to occur, which is not favorable for realizing the characteristic of high-resolution imaging of the optical lens system 100.

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

First embodiment

As shown in fig. 1, a schematic structural diagram of an optical lens 100 disclosed in the first embodiment of the present application is that 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 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 convex and concave, respectively, at a paraxial region O; the object-side surface S5 and the image-side surface S6 of the third lens element L3 are convex and concave, respectively, at a paraxial region O; the object-side surface S7 and the image-side surface S8 of the fourth lens element L4 are concave and convex, respectively, 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, respectively, at a 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, respectively, at a paraxial region O. The object-side surface S17 and the image-side surface S18 of the ninth lens element L9 are both concave at the paraxial region O, the object-side surface S19 and the image-side surface S20 of the tenth lens element L10 are respectively 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 both convex at the paraxial region O.

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

surface numbers

1 and 2 respectively correspond to the object side surface S1 and the image side surface S2 of the first lens L1. 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 set of a lens is the thickness of the lens on the optical axis, and the second value is the distance from the image-side surface to the back surface of the lens on the optical axis. The numerical value of the diaphragm in the "thickness" parameter column is the distance on the optical axis from the diaphragm to the vertex of the next surface (the vertex refers to the intersection point of the surface and the optical axis), the direction from the object side surface of the first lens to the image side surface of the last lens is the positive direction of the optical axis by default, when the value is negative, the diaphragm is arranged on the image side of the vertex of the next surface, and if the thickness of the diaphragm is a positive value, the diaphragm is arranged on the object side of the vertex of the next surface. It is understood that the units of the radius Y, thickness, and focal length in table 1 are all mm. And the refractive index, Abbe number in Table 1 were obtained at a reference wavelength of 587.6nm, and the focal length in Table 1 was obtained at a reference wavelength of 555 nm.

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

wherein x is the rise of the distance from the aspheric surface vertex to the aspheric surface vertex when the aspheric surface is at the position with the height of h along the optical axis O direction; c is the curvature at the optical axis O of the aspheric surface, c ═ 1/Y (i.e., paraxial curvature c is the inverse of the radius of curvature Y in table 1 above); k is the cone coefficient; ai is a correction coefficient of the i-th order of the aspherical surface. Table 2 below gives the high-order term coefficients a4, a6, A8, a10, a12, a14, a16, a18, and a20 that can be used for each aspherical lens in the first embodiment.

TABLE 1

TABLE 2

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

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

Referring to fig. 2 (C), fig. 2 (C) is a distortion curve diagram of the optical lens 100 in the first embodiment at a wavelength of 555.0000 nm. 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 (C) in fig. 2, the distortion of the optical lens 100 is well corrected at a wavelength of 555.0000 nm.

Second embodiment

As shown in fig. 3, a schematic structural diagram of an optical lens 100 disclosed in the second embodiment of the present application is that 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 convex and concave, respectively, at a paraxial region O; the object-side surface S5 and the image-side surface S6 of the third lens element L3 are both 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 both 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, respectively, at a paraxial region O. The object-side surface S17 and the image-side surface S18 of the ninth lens element L9 are respectively concave and convex at the paraxial region O, the object-side surface S19 and the image-side surface S20 of the tenth lens element L10 are respectively 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 respectively convex and concave at the paraxial region O.

Specifically, taking the effective focal length f of the optical lens 100 as 7.455mm, the f-number FNO of the optical lens 100 as 1.65, and the field angle FOVm of the optical lens 100 as 138deg as an example, the other parameters of the optical lens 100 are given in table 3 below. The definitions of the parameters can be obtained from the description of the foregoing embodiments, and are not repeated herein. It is understood that the units of the radius Y, thickness, and focal length in table 3 are all mm. And the refractive index and 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. Table 4 below gives the high-order term 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

Referring to fig. 4, as can be seen from the graph of (a) the longitudinal spherical aberration, (B) the astigmatism, and (C) the distortion in fig. 4, the longitudinal spherical aberration, the astigmatism and the distortion of the optical lens 100 are well controlled, so that the optical lens 100 of this embodiment has good imaging quality. In addition, as for the wavelengths corresponding to the curves in fig. 4 (a), fig. 4 (B), and fig. 4 (C), the contents described in the first embodiment with respect to fig. 2 (a), fig. 2 (B), and fig. 2 (C) may be referred to, and details thereof are not repeated herein.

Third embodiment

As shown in fig. 5, a schematic structural diagram of an optical lens 100 disclosed in the third embodiment of the present application includes, in order from an object side to an image side along an optical axis O, 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. 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 convex and concave, respectively, at a paraxial region O; the object-side surface S5 and the image-side surface S6 of the third lens element L3 are both 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, respectively, at a 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, respectively. 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 both concave at the paraxial region O, the object-side surface S19 and the image-side surface S20 of the tenth lens element L10 are both 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 both convex at the paraxial region O.

Specifically, taking the effective focal length f of the optical lens 100 as 6.5mm, the f-number FNO of the optical lens 100 as 1.61, and the field angle FOVm of the optical lens 100 as 134deg as an example, other parameters of the optical lens 100 are given in table 5 below. The definitions of the parameters can be obtained from the description of the foregoing embodiments, and are not repeated herein. It is understood that the units of the radius Y, thickness, and focal length in table 5 are mm. And the refractive index, 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. Table 6 below gives the high-order term 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

Referring to fig. 6, as shown in the graph of (a) the longitudinal spherical aberration, (B) the astigmatism, and (C) the distortion of fig. 6, the longitudinal spherical aberration, the astigmatism, and the distortion of the optical lens 100 are well controlled, so that the optical lens 100 of this embodiment has good imaging quality. In addition, as for the wavelengths corresponding to the curves in fig. 6 (a), fig. 6 (B), and fig. 6 (C), the contents described in the first embodiment with respect to fig. 2 (a), fig. 2 (B), and fig. 2 (C) may be referred to, and details thereof are not repeated herein.

Fourth embodiment

A schematic structural diagram of an optical lens 100 disclosed in the fourth embodiment of the present application is shown in fig. 7, where 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 convex and concave, respectively, at a paraxial region O; the object-side surface S5 and the image-side surface S6 of the third lens element L3 are concave and convex, respectively, 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 both concave at the paraxial region O. The object-side surface S17 and the image-side surface S18 of the ninth lens element L9 are respectively 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 both 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 respectively convex and concave at the paraxial region O.

Specifically, taking the effective focal length f of the optical lens 100 as 7.759mm, the f-number FNO of the optical lens 100 as 1.75, and the field angle FOVm of the optical lens 100 as 145deg as an example, other parameters of the optical lens 100 are given in table 7 below. The definitions of the parameters can be obtained from the description of the foregoing embodiments, and are not repeated herein. It is understood that the units of the radius Y, thickness, and focal length in table 7 are 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. Table 8 below gives the high-order term 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

Referring to fig. 8, as can be seen from the graph of (a) the longitudinal spherical aberration, (B) the astigmatism graph and (C) the distortion graph in fig. 8, the longitudinal spherical aberration, the astigmatism and the distortion of the optical lens 100 are well controlled, so that the optical lens 100 of this embodiment has good imaging quality. In addition, as for the wavelengths corresponding to the curves in fig. 8 (a), fig. 8 (B), and fig. 8 (C), the contents described in the first embodiment with respect to fig. 2 (a), fig. 2 (B), and fig. 2 (C) may be referred to, and details thereof are not repeated herein.

Fifth embodiment

A schematic structural diagram of an optical lens 100 disclosed in the fifth embodiment of the present application is shown in fig. 9, where 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 both concave at the paraxial region O; the object-side surface S5 and the image-side surface S6 of the third lens element L3 are both 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, respectively, at a paraxial region O; the object-side surface S9 and the image-side surface S10 of the fifth lens element L5 are convex and concave, respectively, at a 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, respectively. The object-side surface S13 and the image-side surface S14 of the seventh lens element L7 are convex and concave, respectively, at a 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 both concave at the paraxial region O, the object-side surface S19 and the image-side surface S20 of the tenth lens element L10 are respectively 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 respectively convex and concave at the paraxial region O.

Specifically, taking the effective focal length f of the optical lens 100 as 8.022mm, the f-number FNO of the optical lens 100 as 1.68, and the field angle FOVm of the optical lens 100 as 135deg as an example, other parameters of the optical lens 100 are given in table 9 below. The definitions of the parameters can be obtained from the description of the foregoing embodiments, and are not repeated herein. It is understood that the units of the radius Y, thickness, and focal length in table 9 are 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. Table 10 below gives the high-order term 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

Watch 10

Referring to fig. 10, as can be seen from the longitudinal spherical aberration diagram (a), the astigmatism diagram (B) and the distortion diagram (C) in fig. 10, the longitudinal spherical aberration, the astigmatism and the distortion of the optical lens 100 are well controlled, so that the optical lens 100 of this embodiment has good imaging quality. In addition, as for the wavelengths corresponding to the curves in fig. 10 (a), fig. 10 (B), and fig. 10 (C), the contents described in the first embodiment with respect to fig. 2 (a), fig. 2 (B), and fig. 2 (C) may be referred to, and details thereof are not repeated herein.

Referring to table 11, table 11 summarizes ratios of the relations 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
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 a camera module 200, which includes a photo sensor 201 and the optical lens 100 according to any of the first to sixth embodiments, wherein the photo sensor 201 is disposed at 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 to 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 again. It can be understood that the camera module 200 having 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 have been described in detail in the embodiments of the optical lens 100, they are not described herein again.

Referring to fig. 12, the present application further discloses an electronic device 300, wherein the electronic device 300 includes a housing 301 and the camera module 200, and the camera module 200 is disposed on the housing 301. The electronic device 300 may be, but not limited to, a mobile phone, a tablet computer, a notebook computer, a smart watch, a monitor, a car recorder, a car backing imager, and the like. It can be understood that the electronic device 300 having the camera module 200 also has all the technical effects of the optical lens 100. That is, the effects of a large aperture, a large image plane, and a compact design can be achieved to improve the imaging quality of the optical lens 100. Since the above technical effects have been described in detail in the embodiments of the optical lens 100, they are not described herein again.

Referring to fig. 13, the present application further discloses an automobile 400, wherein the automobile 400 includes an automobile body 410 and the camera module 200, and the camera module 200 is disposed on the automobile body 410 to obtain image information. It can be understood that the automobile 400 having the camera module 200 also has all the technical effects of the optical lens 100. The automobile with the camera module can be beneficial to acquiring environmental information around the automobile body, provides a clear visual field for the driving of a driver, and provides guarantee for the safe driving of the driver. 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 capture information (such as a detected object, a detected light source, a detected road sign, etc.) of a road surface in real time to be supplied to the ADAS for analysis and judgment, and timely respond, thereby providing a guarantee for safety of automatic Driving. Can provide clear field of vision for driver's driving when the module of making a video recording uses driving recording system, provide the guarantee for driver's safe driving. Since the above technical effects have been described in detail in the embodiments of the optical lens 100, they are not described herein again.

The optical lens, the camera module, the electronic device and the automobile disclosed in the embodiment of the application are introduced in detail, a specific example is applied in the description to explain the principle and the implementation of the application, and the description of the embodiment is only used for helping to understand the optical lens, the camera module, the electronic device and the automobile and the core ideas thereof; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. An optical lens includes 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 this order from an object side to an 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;

2. An optical lens according to claim 1, characterized in that: the optical lens satisfies the following relation:

35deg<(FOVm×f)/Ym<60deg；

3. An optical lens according to claim 1, characterized in that: the optical lens satisfies the following relation:

4＜Ym/EPD＜6；

4. An optical lens according to claim 1, characterized in that: the optical lens satisfies the following relation:

6deg/mm<CRA/SAGs111<18deg/mm；

the CRA is a chief ray incidence angle of the optical lens, and the SAGs111 is a distance in an optical axis direction from a maximum effective aperture of an object side surface of the eleventh lens to an intersection point of the object side surface of the eleventh lens and the optical axis.

5. An optical lens according to claim 1, characterized in that: the optical lens satisfies the following relation:

2.5<SD11/SAGs11<5；

wherein SD11 is the maximum effective half caliber of the object side surface of the first lens, SAGs11 is the distance in the optical axis direction 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.

6. An optical lens according to claim 1, characterized in that: the optical lens satisfies the following relation:

1＜Ym/SD11＜2.5；

7. An optical lens according to claim 1, characterized in that: the optical lens satisfies the following relation:

24mm＜TTL/FNO＜35mm；

wherein, TTL is a distance on the optical axis from the object-side surface of the first lens element to the image plane of the optical lens, and FNO is an f-number of the optical lens.

8. An optical lens according to claim 1, characterized in that: the optical lens satisfies the following relation:

4.5＜f/CT1＜9；

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

9. An optical lens according to claim 1, characterized in that: the optical lens satisfies the following relation:

0.5＜f12/f＜2.5；

10. The utility model provides a module of making a video recording which characterized in that: the image pickup module comprises a photosensitive chip and the optical lens of any one of claims 1 to 9, wherein the photosensitive chip is arranged on the image side of the optical lens.

11. An electronic device, characterized in that: the electronic device comprises a housing and the camera module of claim 10, the camera module being disposed on the housing.

12. An automobile, characterized in that: the automobile comprises an automobile body and the camera module group according to claim 10, wherein the camera module group is arranged on the automobile body.