CN114488466A

CN114488466A - Optical lens, camera module, electronic equipment and automobile

Info

Publication number: CN114488466A
Application number: CN202011167437.6A
Authority: CN
Inventors: 刘志利; 杨懿; 刘秀; 蔡雄宇
Original assignee: Tianjin OFilm Opto Electronics Co Ltd
Current assignee: Tianjin OFilm Opto Electronics Co Ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2022-05-13

Abstract

The invention discloses an optical lens, a camera module, electronic equipment thereof and an automobile, wherein the optical lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens which are arranged in sequence from an object side to an image side along an optical axis, the first lens has refractive power, the second lens has positive refractive power, the third lens has positive refractive power, the fourth lens has negative refractive power, the fifth lens has positive refractive power, the sixth lens has refractive power, and the optical lens meets the following relations: f 43/(2 ImgH) > 62. According to the optical lens, the camera module, the electronic device and the automobile provided by the embodiment of the invention, the lens has the refractive power, the convex-concave design of the object side surface and the image side surface, and the relational expression of f 43/(2 ImgH) > 62 is satisfied, so that the optical lens can satisfy the maximum image height range, and meanwhile, the focal length of the optical lens can be controlled, so that the optical lens has a long-focus function, the imaging resolution of the optical lens is improved, and the imaging quality of the optical lens is improved.

Description

Optical lens, camera module, electronic equipment and automobile

Technical Field

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

Background

With the development of technology, the demand for miniaturization and high-quality imaging quality of optical lenses is increasing. There is a trend toward the use of optical lenses that are thin, short, and functionally excellent in various electronic devices, such as in-vehicle devices and automobile data recorders. In the related art, an optical lens is often composed of a plurality of lenses, and the imaging resolution of the optical lens can be improved by increasing the number of the lenses, so that the telephoto characteristic is realized.

Disclosure of Invention

The embodiment of the invention discloses an optical lens, a camera module, electronic equipment and an automobile, which can improve the imaging resolution of the optical lens while realizing the light, thin and miniaturized design of the optical lens.

In order to achieve the above object, in a first aspect, the present invention discloses an optical lens including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens arranged in order from an object side to an image side along an optical axis;

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

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

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

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

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

the sixth lens element with refractive power;

the optical lens satisfies the following relationship:

f*43/(2*ImgH)＞62；

wherein ImgH is half of the image height corresponding to the maximum field angle of the optical lens, and f is the effective focal length of the optical lens.

In the optical lens provided in this embodiment, six lens elements are adopted, and by setting that each lens element has the above refractive power, the convex-concave design of the object-side surface and the image-side surface, and the relationship of f × 43/(2 × ImgH) > 62 is satisfied, the optical lens can satisfy the maximum image height range, and at the same time, the effective focal length of the optical lens can be effectively controlled, so that the optical lens has a telephoto function, thereby effectively improving the imaging resolution of the optical lens, and further effectively improving the imaging quality of the optical lens.

As an alternative implementation, in an embodiment of the first aspect of the present invention, the optical lens satisfies the following relation: l f123/f < 1;

wherein f123 is a combined focal length of the first lens, the second lens and the third lens, and f is an effective focal length of the optical lens.

The ratio of the combined focal length of the front lens group (namely the first lens, the second lens and the third lens) to the effective focal length of the optical lens is reasonably configured, so that the optical lens has a long-focus characteristic, and the focal length of the front lens group is controlled, so that the assembly of the front lens group is more compact, and the design requirements of the optical lens on lightness, thinness and miniaturization are met.

As an alternative implementation, in an embodiment of the first aspect of the present invention, the optical lens satisfies the following relation: -0.6< f123/f456< 0.4;

wherein f123 is a combined focal length of the first lens, the second lens and the third lens, and f456 is a combined focal length of the fourth lens, the fifth lens and the sixth lens.

By reasonably controlling the distribution ratio of the combined focal length of the front lens group (namely, the first lens, the second lens and the third lens) and the combined focal length of the rear lens group (namely, the fourth lens, the fifth lens and the sixth lens), on one hand, the incident light brightness of the front lens group is favorably controlled so as to reduce the high-level aberration of the optical lens and the outer diameter of the lens; on the other hand, the emergent angle of the principal ray passing through the rear lens group can be reduced, so that the relative brightness of the optical lens is improved.

As an alternative implementation, in an embodiment of the first aspect of the present invention, the optical lens satisfies the following relation: BFL/f < 0.5;

the BFL is a shortest distance (i.e., a back focal length of the optical lens) between an image side surface of the sixth lens element of the optical lens and an image plane of the optical lens, the shortest distance being parallel to the optical axis direction, and f is an effective focal length of the optical lens.

The back focal length of the optical lens and the focal length of the optical lens are reasonably distributed, the distance from the back end of the lens to the imaging surface of the optical lens is easily ensured, and the lens is properly configured.

As an alternative implementation, in an embodiment of the first aspect of the present invention, the optical lens satisfies the following relation: 3.2< TTL/BFL < 3.6;

wherein, TTL is a distance on the optical axis from the object-side surface of the first lens element to the imaging surface of the optical lens, and BFL is a shortest distance (i.e., a back focal length of the optical lens) in the optical axis direction from the image-side surface of the sixth lens element to the imaging surface of the optical lens.

When the relational expression is satisfied, the total length of the optical lens can be effectively limited while the telephoto function is satisfied, and the characteristic requirement of miniaturization of the optical lens is facilitated.

As an alternative implementation, in an embodiment of the first aspect of the present invention, the optical lens satisfies the following relation: 1< TTL/f < 1.9;

wherein, TTL is a distance on an optical axis from an object-side surface of the first lens element to an image plane of the optical lens system (i.e., a total length of the optical lens system), and f is an effective focal length of the optical lens system.

By defining the ratio between the total length of the optical lens and the effective focal length of the optical lens, the total length of the optical lens can be controlled while the field angle range of the optical lens is satisfied, so that the optical lens satisfies the design requirement of miniaturization.

As an alternative implementation, in an embodiment of the first aspect of the present invention, the optical lens satisfies the following relation: 2.5mm < f tan (hfov) <3 mm;

wherein, HFOV is half of the maximum field angle of the optical lens, and f is the effective focal length of the optical lens.

When the above relational expression is satisfied, the lens can be easily arranged appropriately while securing the distance from the rear end of the lens to the image forming surface. In addition, when the angle of view is fixed, the larger the effective focal length is, the longer the focal length is, the optical lens can have the functions of telephoto and telephoto; when the focal length is constant, the smaller the angle of view is, the smaller the aperture of the optical lens can be.

As an alternative implementation, in an embodiment of the first aspect of the present invention, the optical lens satisfies the following relation: 4.1< TTL/Sigma AT < 8.5;

wherein, TTL is a distance on an optical axis from an object-side surface of the first lens element to an image plane of the optical lens, and Σ AT is a sum of air intervals on the optical axis between two adjacent lens elements in the first lens element to the sixth lens element.

The ratio of the total length of the optical lens to the sum of the air intervals between the adjacent lenses is reasonably configured, so that the air intervals between the adjacent lenses and the optical axis can be reduced in a processing range, the total length of the optical lens is further reduced, and the volume of the optical lens is reduced.

As an alternative implementation, in an embodiment of the first aspect of the present invention, the optical lens satisfies the following relation: 0< (R10+ R11)/(R10-R11) < 9;

wherein R10 is a radius of curvature of an object-side surface of the fifth lens element at an optical axis, and R11 is a radius of curvature of an image-side surface of the fifth lens element at the optical axis. Through the reasonable setting of the curvature radius of the object side surface and the image side surface of the fifth lens, the bending degree of the fifth lens can be effectively controlled, the shape of the lens of the fifth lens is smooth and uniform, the sensitivity of the telephoto lens can be reduced, meanwhile, the image quality of the whole imaging surface from the center of the image surface to the edge is clear and uniform, the risk of ghost image generation is reduced, and the image resolving capability of the optical lens is improved.

As an alternative embodiment, in an embodiment of the first aspect of the invention, (AT12+ AT23)/(CT1+ CT2+ CT3) < 0.4;

wherein AT12 is an air space on an optical axis between the first lens and the second lens, AT23 is an air space on an optical axis between the second lens and the third lens, and CT1, CT2 and CT3 are thicknesses on the optical axis between the first lens, the second lens and the third lens, respectively.

When the relation is satisfied, the front three lenses are compact in structure, the optical lens can meet the characteristic of miniaturization, the risk of ghost generation can be reduced, and the imaging quality is improved.

As an alternative implementation, in an embodiment of the first aspect of the invention, V2>45, V4< 30;

wherein V2 is the Abbe number of the second lens and V4 is the Abbe number of the fourth lens.

By limiting the dispersion coefficients of the second lens and the fourth lens, the degree of deflection of the light beam passing through the second lens and the fourth lens can be controlled, and the chromatic aberration on the axis (also referred to as axial chromatic aberration) and the chromatic aberration of magnification (also referred to as magnification chromatic aberration) can be corrected well, thereby contributing to strengthening the aberration correction capability of the lenses and balancing the chromatic aberration.

As an optional implementation manner, in an embodiment of the first aspect of the present invention, the optical lens further includes a stop disposed on an object side of the fourth lens, and a filter disposed on an object side of an image plane of the optical lens.

In order to ensure the imaging definition of the shot object on the imaging surface, the infrared light in the light passing through the sixth lens can be effectively filtered through the arrangement of the optical filter, so that the imaging definition of the shot object on the image side is ensured, and the imaging quality is improved. In addition, the diaphragm is arranged on the object side of the fourth lens, so that the imaging quality of the optical lens can be effectively improved.

In a second aspect, the present invention discloses a camera module, which includes an image sensor and the optical lens of the first aspect, wherein the image sensor is disposed on the image side of the optical lens.

The camera module with the optical lens can effectively improve the resolution of imaging while meeting the requirement of miniaturization design, realize the functions of long focus and telescope and improve the imaging quality.

In a third aspect, the present invention further discloses an electronic device, where the electronic device includes a housing and the camera module according to the second aspect, and the camera module is disposed on the housing. The electronic equipment with the camera module can effectively meet the requirement of miniaturization design, can also effectively improve the resolution of imaging, realizes the functions of long focus and telescope, and improves the imaging quality.

In a fourth aspect, the invention further discloses an automobile, which comprises an automobile body and the camera module set according to the second aspect, wherein the camera module set is arranged on the automobile body to acquire environmental information around the automobile body.

The car that has this module of making a video recording can effectively improve the resolution ratio of formation of image, realizes long burnt, the function of looking into the distant range, improves the imaging quality to provide the imaging information of higher definition to the driver of driving the car, and then improve driver's driving safety nature.

Compared with the prior art, the invention has the beneficial effects that:

according to the optical lens, the camera module, the electronic device and the automobile provided by the embodiment of the invention, the optical lens adopts six lens elements, and the refractive power and the surface shape of each lens element and the ratio of the effective focal length of the optical lens to the maximum imaging image height are limited, so that the imaging resolution of the optical lens is improved under the condition that the number of lens groups is certain, the optical lens has the functions of telephoto and telephoto, the number of the lens elements does not need to be further increased, and the requirements of miniaturization, lightness and thinness of the optical lens are met.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, 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 invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these 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 light ray 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 light ray 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 light ray 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 light ray 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 light ray spherical aberration diagram (mm), an astigmatism diagram (mm), and a distortion diagram (%);

fig. 11 is a schematic structural diagram of an optical lens disclosed in a sixth embodiment of the present application;

fig. 12 is a ray spherical aberration diagram (mm), an astigmatism diagram (mm), and a distortion diagram (%);

fig. 13 is a schematic structural diagram of the camera module disclosed in the present application;

fig. 14 is a schematic structural diagram of an electronic device disclosed in the present application.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "center", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the invention and its embodiments and are not intended 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 meanings of these terms in the present invention can be understood by those skilled 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 meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

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 invention 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 application, 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, and a sixth lens L6, which are disposed in order from an object side to an image side along an optical axis O. During imaging, light enters 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. The first lens element L1 with positive or negative refractive power includes a first object-side surface L10 and a first image-side surface L12, and the second lens element L2 with positive refractive power includes a second object-side surface L20 and a second image-side surface L22. The third lens element L3 with positive refractive power includes a third object-side surface L30 and a third image-side surface L32. The fourth lens element L4 with negative refractive power includes a fourth object-side surface L40 and a fourth image-side surface L42. The fifth lens element L5 with positive refractive power includes a fifth object-side surface L50 and a fifth image-side surface L52. The sixth lens element L6 with positive or negative refractive power includes a sixth object-side surface L60 and a sixth image-side surface L62.

Further, the first object-side surface L10 and the first image-side surface L12 are respectively convex and concave at the paraxial region O, the second object-side surface L20 is convex at the paraxial region O, and the second image-side surface L22 is convex or concave at the paraxial region O. The third object-side surface L30 is convex at the paraxial region O, the third image-side surface L32 is concave at the paraxial region O, the fourth object-side surface L40 is convex or concave at the paraxial region O, and the fourth image-side surface L44 is concave at the paraxial region O. The fifth object-side surface L50 is concave or convex at the paraxial region O, and the fifth image-side surface L52 is convex at the paraxial region O. The sixth object-side surface L60 is concave or convex at the paraxial region, and the sixth image-side surface L62 is convex or concave at the paraxial region.

In consideration of the fact that optical lenses are often used in electronic devices such as in-vehicle devices and automobile recorders, 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 may be spherical lenses. In addition, in order to reduce the influence of temperature on the performance parameters of the lens and further influence the imaging quality of the optical lens, when the optical lens is applied to an in-vehicle device and a driving recorder, glass lenses are adopted for 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.

It is understood that, in other embodiments, when the optical lens 100 is applied to an electronic device such as a smart phone or a smart tablet, 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 may also be made of plastic.

In some embodiments, the optical lens 100 further includes a stop 102, and the stop 102 may be an aperture stop 102 and/or a field stop 102, which may be disposed between the third lens L3 and the fourth lens L4. For example, the stop 102 may be disposed on the object side of the fourth lens L4. It is understood that, in other embodiments, the stop 102 may be disposed between other lenses or between the object plane of the optical lens 100 and the first object-side plane L10 of the first lens L1, and the setting is adjusted according to practical situations, which is not specifically limited in this embodiment.

Optionally, in order to improve the imaging quality, the optical lens 100 further includes an optical filter 70, and the optical filter 70 is disposed on the object side of the imaging surface 101 of the optical lens 100. Optionally, the optical filter 70 is an infrared optical filter, and by adopting the arrangement of the infrared optical filter 70, the infrared light passing through the sixth lens L6 can be effectively filtered, so that the imaging definition of the object on the image side is ensured, and the imaging quality is improved.

In some embodiments, the optical lens 100 satisfies the following relationship: f 43/(2 ImgH) > 62; wherein ImgH is half of the image height corresponding to the maximum field angle of the optical lens, and f is the effective focal length of the optical lens. Optionally, the ratio f 43/(2 ImgH) may be 63.3866, 65.2679, 66.3836, 67.5714, etc.

By limiting the relation between the focal length of the optical lens and the maximum image height of the optical lens, namely the calculation formula of the equivalent focal length, the focal length of the optical lens can be controlled while the maximum image height range of the optical lens is met, so that the optical lens can have the characteristic of long focus. In addition, when the half ImgH of the maximum image height is fixed, the larger the effective focal length f is, the larger the equivalent focal length of the optical lens is, so that the optical lens can be formed into a telephoto lens, the imaging resolution of the optical lens can be effectively improved, and the imaging quality of the optical lens is effectively improved.

In some embodiments, the optical lens 100 satisfies the following relationship: l f123/f < 1; wherein f123 is a combined focal length of the first lens, the second lens and the third lens, and f is an effective focal length of the optical lens. Alternatively, the ratio of f123 to f can be 0.5636, 0.5894, 0.6682, 0.7274, 0.7357, 0.7750, and the like.

The ratio of the combined focal length of the front lens group (namely the first lens, the second lens and the third lens) to the focal length of the optical lens is reasonably configured, so that the optical lens has a long-focus characteristic, and the focal length of the front lens group is controlled, so that the assembly of the front lens group is more compact, and the design requirements of the optical lens on lightness, thinness and miniaturization are met.

In some embodiments, the optical lens 100 satisfies the following relationship: -0.6< f123/f456< 0.4; wherein f123 is a combined focal length of the first lens, the second lens and the third lens, and f456 is a combined focal length of the fourth lens, the fifth lens and the sixth lens. Optionally, the ratio of f123 to f456 may be-0.5792, -0.5172, -0.0616, 0.2109, 0.2495, 0.3575, or the like. By reasonably controlling the distribution ratio of the combined focal length of the front lens group (namely, the first lens, the second lens and the third lens) and the combined focal length of the rear lens group (namely, the fourth lens, the fifth lens and the sixth lens), on one hand, the incident light brightness of the front lens group is favorably controlled so as to reduce the high-level aberration of the optical lens and the outer diameter of the lens; on the other hand, the emergent angle of the principal ray passing through the rear lens group can be reduced, so that the relative brightness of the optical lens is improved.

In some embodiments, the optical lens 100 satisfies the following relationship: BFL/f < 0.5; the BFL is a shortest distance between an image side surface of the sixth lens element of the optical lens and an image plane of the optical lens in the optical axis direction (i.e., a back focal length of the optical lens), and the f is an effective focal length of the optical lens. Illustratively, BFL/f may take on values of 0.3401, 0.3443, 0.4042, 0.4358, 0.4756, 0.4934, and the like.

In some embodiments, optical lens 100 satisfies the following relationship: 3.2< TTL/BFL < 3.6; wherein, TTL is a distance on the optical axis from the object-side surface of the first lens element to the imaging surface of the optical lens, and BFL is a shortest distance (i.e., back focal length) in the optical axis direction from the image-side surface of the sixth lens element to the imaging surface of the optical lens. Optionally, in the above relational expression, TTL/BFL may take on values of 3.2019, 3.3001, 3.3411, 3.3354, 3.4056, 3.5035, and the like.

In some embodiments, the optical lens 100 satisfies the following relationship: 1< TTL/f < 1.9; wherein, TTL is a distance on an optical axis from an object-side surface of the first lens element to an imaging surface of the optical lens, and f is an effective focal length of the optical lens. Optionally, TTL/f may take on values of 1.1364, 1.2941, 1.4357, 1.6198, 1.7281, and the like.

By defining the ratio between the total length of the optical lens and the focal length of the optical lens, the total length of the optical lens can be controlled while satisfying the field angle range of the optical lens, thereby enabling the optical lens to satisfy the design requirement for miniaturization. When TTL/f is more than 1.9, the total length of the optical lens is too long when the effective focal length f is not changed, which is not beneficial to the miniaturization of the optical lens; when TTL/f is less than 1, the total length of the optical lens is small when the effective focal length f is unchanged, and the air gap between the lenses of the optical lens is small, so that the sensitivity of the assembly tolerance between the lenses is reduced, which is not favorable for the miniaturization design of the optical lens.

In some embodiments, the optical lens 100 further satisfies the following relationship: 2.5mm < f tan (hfov) <3 mm; wherein, HFOV is half of the maximum field angle of the optical lens, and f is the effective focal length of the optical lens. Alternatively, tan (hfov) may take values of 0.3038, 0.3039, 0.3271, 0.3324, 0.3478, etc., and f tan (hfov) may take values of 2.6736mm, 2.6743mm, 2.8269mm, 2.8613mm, 2.8711mm, 2.8734mm, etc.

When the above relational expression is satisfied, the lens can be easily arranged appropriately while securing the distance from the rear end of the lens to the image forming surface. In addition, when the angle of view is constant, the larger the focal length is, the longer the focal length is, the optical lens can have the functions of telephoto and telephoto; when the focal length is constant, the smaller the angle of view is, the smaller the aperture of the optical lens can be.

In some embodiments, the optical lens 100 further satisfies the following relationship: 4.1< TTL/Sigma AT < 8.5; wherein, TTL is a distance on an optical axis from an object-side surface of the first lens element to an image plane of the optical lens, and Σ AT is a sum of air intervals on the optical axis between two adjacent lens elements in the first lens element to the sixth lens element. Optionally, the TTL/Σ AT can take on values of 4.2199, 4.5053, 6.0241, 7.2189, 8.3990, and so on.

The ratio of the total length of the optical lens to the sum of the air intervals between the adjacent lenses is reasonably configured, so that the air intervals between the adjacent lenses and the optical axis can be reduced in a processing range, the total length of the optical lens is further reduced, and the size of the optical lens is further reduced. When TTL/SIGMA AT is more than 8.5, the air interval between the adjacent lenses and the optical axis is too small, so that the sensitivity of the optical lens is easily increased, the assembly of the lenses is not facilitated, and the processing difficulty is increased; when TTL/SIGMA AT is less than 4.5, the air space between adjacent lenses and the optical axis is too large, which is not favorable for the miniaturization of the optical lens.

In some embodiments, the optical lens 100 further satisfies the following relationship: 0< (R10+ R11)/(R10-R11) < 9; wherein R10 is a radius of curvature of an object-side surface of the fifth lens element at an optical axis, and R11 is a radius of curvature of an image-side surface of the fifth lens element at the optical axis. Illustratively, the value of (R10+ R11)/(R10-R11) can be 0.31, 1.44, 2.21, 5.60, 6.28, 8.60, etc.

Through the reasonable setting of the curvature radius of the object side surface and the image side surface of the fifth lens at the optical axis, the bending degree of the fifth lens can be effectively controlled, the shape of the lens of the fifth lens is smooth and uniform, the sensitivity of the telephoto lens can be reduced, meanwhile, the image quality of the integral imaging surface from the center of the image surface to the edge is clear and uniform, the risk of ghost image generation is reduced, and the image resolving capability of the optical lens is improved.

In some embodiments, the optical lens 100 further satisfies the following relationship: (AT12+ AT23)/(CT1+ CT2+ CT3) < 0.4; wherein AT12 is an air space on an optical axis between the first lens and the second lens, AT23 is an air space on an optical axis between the second lens and the third lens, and CT1, CT2 and CT3 are thicknesses on the optical axis between the first lens, the second lens and the third lens, respectively. Alternatively, the ratio of (AT12+ AT23)/(CT1+ CT2+ CT3) may be 0.0693, 0.0789, 0.0806, 0.0877, 0.1022, 0.3485, etc. When the relational expression is satisfied, the optical lens is favorable for satisfying the characteristic of miniaturization, and meanwhile, the risk of ghost generation can be reduced, and the imaging quality is improved.

In some embodiments, the optical lens 100 further satisfies the following relationship: v2>45, V4< 30; wherein V2 is the Abbe number of the second lens and V4 is the Abbe number of the fourth lens. Optionally, V2 may take on values of 46, 47.8, etc. V4 can take on values of 18.9, 23.0, 28, etc.

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 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 third lens L3, a stop 102, a fourth lens L4, a fifth lens L5, a sixth lens L6, and an infrared filter 70.

The first lens element L1 with negative refractive power has a convex object-side surface L10 at a paraxial region and a concave image-side surface L12 at a paraxial region. The second lens element L2 with positive refractive power has a convex object-side surface L20 at the paraxial region and a convex image-side surface L22 at the paraxial region. The third lens element L3 with positive refractive power has a convex object-side surface L30 at the paraxial region O and a concave image-side surface L32 at the paraxial region O. The fourth lens element L4 with negative refractive power has a concave object-side surface L40 at the paraxial region O and a concave image-side surface L42 at the paraxial region O. The fifth lens element L5 with positive refractive power has a concave object-side surface L50 at the paraxial region O and a convex image-side surface L52 at the paraxial region O. The sixth lens element L6 with positive refractive power has a convex object-side surface L60 at the paraxial region O and a concave image-side surface L62 at the paraxial region O.

Further, the object-side surface and the image-side surface of the six lenses are spherical surfaces. And the materials of the six lenses are all glass, so that when the optical lens 100 is applied to electronic equipment such as a vehicle-mounted device, the influence of temperature on the lenses can be reduced, and the imaging quality of the optical lens 100 is ensured.

Specifically, taking the effective focal length f of the optical lens 100 of 8.6453mm, half of the field angle HFOV of the optical lens 100 of 18.3853 °, the aperture size FNO of 2, and the total length TTL of 14.9397mm 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 the smaller surface number is the object side surface of the lens, and the surface with the larger surface number is the image side surface of the lens, and as in the case of the surfaces 1 and 2, the first object side surface L10 and the first image side surface L12 of the first lens L1 correspond respectively. The radii in table 1 are the radii of curvature of the object-side or image-side surfaces of the respective surface numbers at the paraxial region O. The first value in the "thickness" parameter column for the first lens element L1 is the thickness of the lens element on the optical axis O (center thickness), and the second value is the distance between the image-side surface of the lens element and the object-side surface of the subsequent lens element on the optical axis O (i.e., air space). The numerical value of the stop 102 in the "thickness" parameter column is the distance on the optical axis O from the stop 102 to the vertex of the object-side surface of the subsequent lens (the vertex refers to the intersection point of the lens and the optical axis O), the direction from the object-side surface of the first lens L1 to the image-side surface of the last lens is defined as the positive direction of the optical axis O, when the value is negative, it indicates that the stop 102 is disposed on the right side of the vertex of the object-side surface of the subsequent lens, and if the thickness of the stop 102 is positive, the stop 102 is disposed on the left side of the vertex of the object-side surface of the subsequent lens. 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, focal length, etc. in table 1 were obtained at the reference wavelength.

TABLE 1

Referring to fig. 2(a), fig. 2(a) shows a light spherical aberration curve of the optical lens 100 in the first embodiment at 486.1327nm, 587.5618nm, 666.2725nm and 852.1100 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 diagram of astigmatism of light of the optical lens 100 in the first embodiment at a wavelength of 587.5618 nm. Wherein the abscissa in the X-axis direction represents the focus shift and the ordinate in the Y-axis direction represents the image height. As can be seen from fig. 2(B), astigmatism of the optical lens 100 is well compensated.

Referring to fig. 2(C), fig. 2(C) is a distortion curve diagram of the optical lens 100 of the first embodiment at a wavelength of 587.5618 nm. Wherein the abscissa along the X-axis direction represents distortion and the ordinate along the Y-axis direction represents image height. As can be seen from fig. 2(C), the distortion of the optical lens 100 is well corrected at a wavelength of 587.5618 nm.

Second embodiment

Referring to fig. 3, fig. 3 is 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 third lens L3, a stop 102, a fourth lens L4, a fifth lens L5, a sixth lens L6, and an infrared filter 70, which are provided in this order from the object side to the image side along the optical axis O.

The first lens element L1 with positive refractive power has a convex object-side surface L10 at a paraxial region and a concave image-side surface L12 at a paraxial region. The second lens element L2 with positive refractive power has a convex object-side surface L20 at paraxial region and a concave image-side surface L22 at paraxial region. The third lens element L3 with positive refractive power has a convex object-side surface L30 at the paraxial region and a concave image-side surface L32 at the paraxial region. The fourth lens element L4 with negative refractive power has a convex object-side surface L40 at the paraxial region and a concave image-side surface L42 at the paraxial region. The fifth lens element L5 with positive refractive power has a concave object-side surface L50 at a paraxial region and a convex image-side surface L52 at a paraxial region. The sixth lens element L6 with positive refractive power has a convex object-side surface L60 at the paraxial region and a convex image-side surface L62 at the paraxial region.

In the second embodiment, the effective focal length f of the optical lens 100 is 8.2550mm, the half field angle HFOV of the optical lens 100 is 19.1776 °, the aperture size FNO is 2, and the total length TTL of the optical lens is 12 mm.

Other parameters in the second embodiment are given in the following table 2, and the definitions of the parameters can be obtained from the description of the foregoing embodiments, which are not repeated herein. It is understood that the units of the radius Y, the thickness, and the focal length in table 2 are all mm, and the refractive index, the abbe number, the focal length, and the like in table 2 are obtained at the reference wavelength.

TABLE 2

Further, referring to fig. 4(a), a light spherical aberration curve chart of the optical lens 100 in the second embodiment at wavelengths of 486.1327nm, 587.5618nm, 666.2725nm and 852.1100nm is shown. In fig. 4(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. 4(a), the spherical aberration value of the optical lens 100 in the second embodiment is better, which illustrates that the imaging quality of the optical lens 100 in this embodiment is better.

Referring to fig. 4(B), fig. 4(B) is a diagram of astigmatism of light of the optical lens 100 in the second embodiment at a wavelength of 587.5618 nm. Wherein the abscissa in the X-axis direction represents the focus shift and the ordinate in the Y-axis direction represents the image height. As can be seen from fig. 4(B), astigmatism of the optical lens 100 is well compensated.

Referring to fig. 4(C), fig. 4(C) is a graph illustrating a distortion curve of the optical lens 100 at a wavelength of 587.5618nm in the second embodiment. Wherein the abscissa along the X-axis direction represents distortion and the ordinate along the Y-axis direction represents image height. As can be seen from fig. 4(C), the distortion of the optical lens 100 is well corrected at a wavelength of 587.5618 nm.

Third embodiment

Referring to fig. 5, fig. 5 is a schematic structural diagram of an optical lens 100 according to a third embodiment of the present application. The optical lens 100 includes a first lens L1, a second lens L2, a third lens L3, a stop 102, a fourth lens L4, a fifth lens L5, a sixth lens L6, and an infrared filter 70, which are provided in this order from the object side to the image side along the optical axis O.

The first lens element L1 with negative refractive power has a convex object-side surface L10 at a paraxial region and a concave image-side surface L12 at a paraxial region. The second lens element L2 with positive refractive power has a convex object-side surface L20 at the paraxial region and a convex image-side surface L22 at the paraxial region. The third lens element L3 with positive refractive power has a convex object-side surface L30 at the paraxial region and a concave image-side surface L32 at the paraxial region. The fourth lens element L4 with negative refractive power has a convex object-side surface L40 at the paraxial region and a concave image-side surface L42 at the paraxial region. The fifth lens element L5 with positive refractive power has a concave object-side surface L50 at a paraxial region and a convex image-side surface L52 at a paraxial region. The sixth lens element L6 with positive refractive power has a convex object-side surface L60 at the paraxial region and a convex image-side surface L62 at the paraxial region.

In the third embodiment, the effective focal length f of the optical lens 100 is 8.6432mm, the half field angle HFOV of the optical lens 100 is 18.111 °, the aperture size FNO is 2, and the total length TTL of the optical lens is 14 mm.

Other parameters in the third embodiment are shown in the following table 3, and the definitions of the parameters can be obtained from the foregoing description, which is not repeated herein. It is understood that the units of the radius Y, the thickness, and the focal length in table 3 are all mm, and the refractive index, the abbe number, and the focal length, etc. in table 3 are obtained at the reference wavelength.

TABLE 3

Further, referring to fig. 6(a), a light spherical aberration curve chart of the optical lens 100 in the third embodiment at wavelengths of 486.1327nm, 587.5618nm, 666.2725nm and 852.1100nm is shown. In fig. 6(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. 6(a), the spherical aberration value of the optical lens 100 in the third embodiment is better, which illustrates that the imaging quality of the optical lens 100 in this embodiment is better.

Referring to fig. 6(B), fig. 6(B) is a diagram of astigmatism of light of the optical lens 100 in the third embodiment at a wavelength of 587.5618 nm. Wherein the abscissa in the X-axis direction represents the focus shift and the ordinate in the Y-axis direction represents the image height. As can be seen from fig. 6(B), astigmatism of the optical lens 100 is well compensated.

Referring to fig. 6(C), fig. 6(C) is a distortion curve diagram of the optical lens 100 in the third embodiment at a wavelength of 587.5618 nm. Wherein the abscissa along the X-axis direction represents distortion and the ordinate along the Y-axis direction represents image height. As can be seen from fig. 6(C), the distortion of the optical lens 100 is well corrected at a wavelength of 587.5618 nm.

Fourth embodiment

Fig. 7 is a schematic structural diagram of an optical lens 100 according to a fourth embodiment of the present disclosure. The optical lens 100 includes a first lens L1, a second lens L2, a third lens L3, a stop 102, a fourth lens L4, a fifth lens L5, a sixth lens L6, and an infrared filter 70, which are provided in this order from the object side to the image side along the optical axis O.

The first lens element L1 with positive refractive power has a convex object-side surface L10 at a paraxial region and a concave image-side surface L12 at a paraxial region. The second lens element L2 with positive refractive power has a convex object-side surface L20 at a paraxial region and a concave image-side surface L22 at a paraxial region. The third lens element L3 with positive refractive power has a convex object-side surface L30 at the paraxial region and a concave image-side surface L32 at the paraxial region. The fourth lens element L4 with negative refractive power has a convex object-side surface L40 at the paraxial region and a concave image-side surface L42 at the paraxial region. The fifth lens element L5 with positive refractive power has a concave object-side surface L50 at a paraxial region and a convex image-side surface L52 at a paraxial region. The sixth lens element L6 with positive refractive power has a convex object-side surface L60 at the paraxial region and a concave image-side surface L62 at the paraxial region.

In the fourth embodiment, the effective focal length f of the optical lens 100 is 8.5mm, the half field angle HFOV of the optical lens 100 is 18.6046 °, the aperture size FNO is 2.0, and the total length TTL of the optical lens is 11 mm.

Other parameters in the fourth embodiment are shown in the following table 4, and the definitions of the parameters can be obtained from the foregoing description, which is not repeated herein. It is understood that the units of the radius Y, thickness, and focal length in table 4 are mm. The refractive index, Abbe number, focal length, etc. in Table 4 were obtained at the reference wavelength

TABLE 4

Further, referring to fig. 8(a), a light spherical aberration curve chart of the optical lens 100 in the fourth embodiment at wavelengths of 486.1327nm, 587.5618nm, 666.2725nm and 852.1100nm is shown. In fig. 8(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. 8(a), the spherical aberration value of the optical lens 100 in the fourth embodiment is better, which illustrates that the imaging quality of the optical lens 100 in this embodiment is better.

Referring to fig. 8(B), fig. 8(B) is a diagram of astigmatism of light of the optical lens 100 in the fourth embodiment at a wavelength of 587.5618 nm. Wherein the abscissa in the X-axis direction represents the focus shift and the ordinate in the Y-axis direction represents the image height. As can be seen from fig. 8(B), astigmatism of the optical lens 100 is well compensated.

Referring to fig. 8(C), fig. 8(C) is a distortion curve diagram of the optical lens 100 in the fourth embodiment at a wavelength of 587.5618 nm. Wherein the abscissa along the X-axis direction represents distortion and the ordinate along the Y-axis direction represents image height. As can be seen from fig. 8(C), the distortion of the optical lens 100 is well corrected at a wavelength of 587.5618 nm.

Fifth embodiment

Fig. 9 is 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 third lens L3, a stop 102, a fourth lens L4, a fifth lens L5, a sixth lens L6, and an infrared filter 70, which are provided in this order from the object side to the image side along the optical axis O.

In the fifth embodiment, the effective focal length f of the optical lens 100 is 8.8mm, the half field angle HFOV of the optical lens 100 is 16.9039 °, the aperture size FNO is 2, and the total length TTL of the optical lens is 10 mm.

Other parameters in the fifth embodiment are shown in the following table 5, and the definitions of the parameters can be obtained from the foregoing description, which is not repeated herein. It is understood that the units of the radius Y, the thickness, and the focal length in table 5 are all mm, and the refractive index, the abbe number, the focal length, and the like in table 5 are obtained at the reference wavelength.

TABLE 5

Further, referring to fig. 10(a), a light spherical aberration curve of the optical lens 100 in the fifth embodiment at wavelengths of 486.1327nm, 587.5618nm, 666.2725nm and 852.1100nm is shown. In fig. 10(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 figure 10(a),

the spherical aberration value of the optical lens 100 in the fifth embodiment is better, which means that the imaging quality of the optical lens 100 in this embodiment is better.

Referring to fig. 10(B), fig. 10(B) is a diagram of astigmatism of light of the optical lens 100 in the fifth embodiment at a wavelength of 587.5618 nm. Wherein the abscissa in the X-axis direction represents the focus shift and the ordinate in the Y-axis direction represents the image height. As can be seen from fig. 10(B), astigmatism of the optical lens 100 is well compensated.

Referring to fig. 10(C), fig. 10(C) is a graph illustrating a distortion curve of the optical lens 100 at a wavelength of 587.5618nm in the fifth embodiment. Wherein the abscissa along the X-axis direction represents distortion and the ordinate along the Y-axis direction represents image height. As can be seen from fig. 10(C), the distortion of the optical lens 100 is well corrected at a wavelength of 587.5618 nm.

Sixth embodiment

Fig. 11 is a schematic structural diagram of an optical lens 100 according to a sixth embodiment of the present application. The optical lens 100 includes a first lens L1, a second lens L2, a third lens L3, a stop 102, a fourth lens L4, a fifth lens L5, a sixth lens L6, and an infrared filter 70, which are provided in this order from the object side to the image side along the optical axis O.

The first lens element L1 with positive refractive power has a convex object-side surface L10 and a concave image-side surface L12. The second lens element L2 with positive refractive power has a convex object-side surface L20 at a paraxial region and a concave image-side surface L22 at a paraxial region. The third lens element L3 with positive refractive power has a convex object-side surface L30 at paraxial region and a concave image-side surface L32 at paraxial region. The fourth lens element L4 with negative refractive power has a convex object-side surface L40 at the paraxial region and a concave image-side surface L42 at the paraxial region. The fifth lens element L5 with positive refractive power has a convex object-side surface L50 at the paraxial region and a convex image-side surface L52 at the paraxial region. The sixth lens element L6 with negative refractive power has a concave object-side surface L60 at the paraxial region and a convex image-side surface L62 at the paraxial region.

In the sixth embodiment, the effective focal length f of the optical lens 100 is 8.8mm, the half field angle HFOV of the optical lens 100 is 16.8997 °, the aperture size FNO is 2.0, and the total length TTL of the optical lens is 10mm, for example.

The other parameters in the sixth embodiment are given in the following table 6, and the definitions of the parameters can be obtained from the foregoing description, which is not repeated herein. It is understood that the units of the radius Y, the thickness, and the focal length in table 6 are all mm, and the refractive index, the abbe number, the focal length, and the like in table 6 are obtained at the reference wavelength.

TABLE 6

Further, referring to fig. 12(a), a light spherical aberration curve chart of the optical lens 100 in the sixth embodiment at wavelengths of 486.1327nm, 587.5618nm, 666.2725nm and 852.1100nm is shown. In fig. 12(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. 12(a), the spherical aberration value of the optical lens 100 in the sixth embodiment is better, which illustrates that the imaging quality of the optical lens 100 in this embodiment is better.

Referring to fig. 12(B), fig. 12(B) is a diagram of astigmatism of light of the optical lens 100 in the sixth embodiment at a wavelength of 587.5618 nm. Wherein the abscissa in the X-axis direction represents the focus shift and the ordinate in the Y-axis direction represents the image height. As can be seen from fig. 12(B), astigmatism of the optical lens 100 is well compensated.

Referring to fig. 12(C), fig. 12(C) is a graph illustrating a distortion curve of the optical lens 100 at a wavelength of 587.5618nm in the sixth embodiment. Wherein the abscissa along the X-axis direction represents distortion and the ordinate along the Y-axis direction represents image height. As can be seen from fig. 12(C), the distortion of the optical lens 100 is well corrected at a wavelength of 587.5618 nm.

Please refer to table 7, table 7 is a summary table of ratios of relations satisfied by the optical lens system in the first embodiment to the sixth embodiment of the present application.

TABLE 7

Referring to fig. 13, the present application further discloses a camera module 200, which includes an image sensor 201 and the optical lens 100 according to any of the first to sixth embodiments, wherein the image sensor 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 to the image sensor 201, and the image sensor 201 is configured to convert the optical signal corresponding to the subject into an image signal. And will not be described in detail herein. It can be understood that the camera module 200 having the optical lens 100 has all the technical effects of the optical lens 100, i.e. the imaging resolution of the optical lens can be improved under the condition of a certain number of lens groups, so that the optical lens has the functions of telephoto and telephoto, and thus the requirements of miniaturization, lightness and thinness of the optical lens can be met without further increasing the number of lenses. 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. 14, 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 is not limited to, a mobile phone, a tablet computer, a notebook computer, a smart watch, a monitor, 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. In other words, the imaging resolution of the optical lens can be improved under the condition that the number of the lens groups is fixed, so that the optical lens has the functions of long focus and telescope, and the requirements of miniaturization, lightness and thinness of the optical lens are met without increasing the number of the lenses. Since the above technical effects have been described in detail in the embodiments of the optical lens 100, they are not described herein again.

Further, this application still discloses an automobile, this automobile include the automobile body and as above the module 200 of making a video recording, this module 200 of making a video recording sets up in order to acquire the environmental information around the automobile body on the automobile body. It can be understood that when this module 200 of making a video recording sets up on the automobile body, this module 200 of making a video recording is the on-vehicle module of making a video recording, and it can acquire the environmental information around the automobile body, for the driver provides the imaging effect of higher definition, better quality, thereby the driver of being convenient for can in time learn the all ring border circumstances of automobile body, improves and drives the security.

The optical lens, the camera module, the electronic device thereof, and the vehicle disclosed in the embodiments of the present invention are described in detail above, and specific examples are applied herein to explain the principles and embodiments of the present invention, and the description of the embodiments above is only used to help understand the optical lens, the camera module, the electronic device thereof, the vehicle, and the core idea thereof of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. An optical lens, characterized in that: the optical lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens which are arranged in sequence from an object side to an image side along an optical axis;

the sixth lens element with refractive power;

the optical lens satisfies the following relationship:

f*43/(2*ImgH)＞62；

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

|f123/f|<1；

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

-0.6<f123/f456<0.4；

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

BFL/f<0.5；

the BFL is a shortest distance between an image side surface of the sixth lens element of the optical lens and an imaging surface of the optical lens in the optical axis direction, and f is an effective focal length of the optical lens.

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

3.2<TTL/BFL<3.6；

wherein, TTL is a distance on the optical axis from the object-side surface of the first lens element to the imaging surface of the optical lens, and BFL is a shortest distance on the optical axis from the image-side surface of the sixth lens element of the optical lens to the imaging surface of the optical lens.

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

1<TTL/f<1.9；

wherein, TTL is a distance on an optical axis from an object-side surface of the first lens element to an imaging surface of the optical lens, and f is an effective focal length of the optical lens.

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

2.5mm<f*tan(HFOV)<3mm；

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

4.1<TTL/∑AT<8.5；

wherein TTL is a distance on an optical axis from an object-side surface of the first lens element to an image plane of the optical lens, and Σ AT is a sum of air intervals on the optical axis between two adjacent lens elements in the first lens element to the sixth lens element.

9. An optical lens according to claim 1, characterized in that: the optical lens satisfies the following relation: 0< (R10+ R11)/(R10-R11) < 9;

wherein R10 is a radius of curvature of an object-side surface of the fifth lens element at an optical axis, and R11 is a radius of curvature of an image-side surface of the fifth lens element at the optical axis.

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

(AT12+AT23)/(CT1+CT2+CT3)<0.4；

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

V2>45，V4<30；

12. An optical lens according to any one of claims 1 to 11, characterized in that: the optical lens further comprises a diaphragm and an optical filter, the diaphragm is arranged on the object side of the fourth lens, and the optical filter is arranged on the object side of the imaging surface.

13. The utility model provides a module of making a video recording which characterized in that: the camera module comprises an image sensor and the optical lens of any one of claims 1 to 12, wherein the image sensor is arranged on the image side of the optical lens.

14. An electronic device, characterized in that: the electronic device comprises a housing and the camera module of claim 13, the camera module being disposed within the housing.

15. An automobile, characterized in that: the automobile comprises an automobile body and the camera module set according to claim 13, wherein the camera module set is arranged on the automobile body to acquire environmental information around the automobile body.