CN113484990A

CN113484990A - Optical lens, camera module, electronic equipment and automobile

Info

Publication number: CN113484990A
Application number: CN202110796871.9A
Authority: CN
Inventors: 乐宇明; 蔡雄宇; 周芮; 赵迪
Original assignee: Tianjin OFilm Opto Electronics Co Ltd
Current assignee: Jiangxi Oufei Optics Co ltd
Priority date: 2021-07-14
Filing date: 2021-07-14
Publication date: 2021-10-08
Anticipated expiration: 2041-07-14
Also published as: CN113484990B

Abstract

The invention discloses an optical lens, a camera module, electronic equipment and an automobile, wherein the optical lens comprises the following components which are arranged along an optical axis from an object side to an image side in sequence: the first lens element with positive refractive power has a convex object-side surface and a concave image-side surface at a paraxial region, the second lens element with negative refractive power has a convex object-side surface and a concave image-side surface at a paraxial region, the third lens element with positive refractive power has a convex image-side surface at a paraxial region, the fourth lens element with negative refractive power has a convex object-side surface at a paraxial region, the fifth lens element with positive refractive power has a concave image-side surface at a paraxial region, and the optical lens element satisfies the following relationships: f/EPD is less than or equal to 1.62; where f is the effective focal length of the optical lens, and EPD is the entrance pupil diameter of the optical lens. The optical lens, the camera module, the electronic equipment and the automobile provided by the invention can realize miniaturization, lightness and thinness of the optical lens and realize high-quality imaging.

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 the vehicle-mounted industry, in order to provide better Driving experience for drivers, cameras are widely applied to various vehicle-mounted systems, such as an Advanced Driving Assistance System (Advanced Driving Assistance System), a Driving recording System, a reverse image and the like, so as to realize functions of automatic Driving, monitoring and monitoring of automobiles and the like. However, in the trend of miniaturization of optical lenses, how to achieve a long-focus characteristic and a large aperture characteristic of an optical lens, and further achieve high-quality imaging of the optical lens and even a camera, is a technical problem to be solved.

Disclosure of Invention

The embodiment of the invention discloses an optical lens, a camera module, electronic equipment and an automobile, which can realize the characteristics of large aperture and long focal length of the optical lens while realizing the miniaturization and the lightness and the thinness of the optical lens so as to realize the high-quality imaging 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 positive refractive power has a convex object-side surface at a paraxial region thereof, and a planar image-side surface at a paraxial region thereof;

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

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

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

the fifth lens element with positive refractive power;

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

the optical lens satisfies the following relation:

f/EPD≤1.62；

wherein f is an effective focal length of the optical lens, and EPD is an entrance pupil diameter of the optical lens.

In the optical lens provided by the application, the first lens element of the optical lens provides positive refractive power for the optical lens, and the object side surface of the first lens element is a convex surface at a paraxial region, and the image side surface of the first lens element is a planar surface design at the paraxial region, so that incident light rays with a large angle with the optical axis can enter the optical lens, and at the moment, the incident light rays can be effectively converged, thereby forming a telescopic structure; when incident light passes through the second lens element with negative refractive power, and because the object-side surface and the image-side surface of the second lens element at the paraxial region are both concave, the situation that the outer diameter of the second lens element is too large can be avoided, so that the incident light can be further converged, and the smooth transition of the incident light can be realized; by matching with the third lens with positive refractive power and the surface type design that the image side surface of the third lens is convex at the paraxial region, when incident light passes through the third lens, the light of the central field and the light of the marginal field are effectively converged to correct marginal aberration and improve the resolving power of the optical lens, so that the imaging quality of the optical lens is improved, and meanwhile, the total length of the optical lens can be compressed to realize the miniaturization of the optical lens; when light passes through the fourth lens element with negative refractive power and a convex object-side surface at a paraxial region, marginal field-of-view light is effectively converged, and the fourth lens element can correct marginal field-of-view aberration generated when incident light passes through the first lens element and the third lens element, so as to improve the imaging quality of the optical lens; because the positive refractive power provided by the fifth lens element is opposite to the negative refractive power provided by the fourth lens element, the aberrations generated by the fifth lens element and the fourth lens element can be offset, and the imaging quality of the optical lens is further improved; the image side surface of the sixth lens is a concave surface arranged at a paraxial region, so that the imaging range of the optical lens can be ensured, the outer diameter of the lens of the sixth lens is prevented from being too large, the sixth lens provides positive refractive power or negative refractive power for the optical lens, and when incident light enters the imaging surface of the optical lens through the sixth lens, the sixth lens can balance the aberration which is difficult to correct and is generated by the incident light passing through the front lens group (the first lens to the fifth lens), and can converge central field light again, further compress the total length of the optical lens, realize the miniaturization of the optical lens, effectively inhibit the spherical aberration generated by the optical lens, and improve the imaging quality of the optical lens. Further, the optical lens satisfies the following relational expression: f/EPD is less than or equal to 1.62; wherein f is an effective focal length of the optical lens, and EPD is an entrance pupil diameter of the optical lens. The constraint of the relational expression enables the optical lens to have the long-focus characteristic and realize the characteristic of a large aperture, improves the brightness of the imaging of the optical lens, and further improves 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:

25<Vd4-Vd5＜45；

vd4 is the Abbe number of the fourth lens element in d-ray, and Vd5 is the Abbe number of the fifth lens element in d-ray.

Since the selection of the lens material affects the abbe number of each lens, and finally the imaging quality of the optical lens is affected, the appropriate material is selected to obtain the desired abbe number, so that the imaging quality of the optical lens can be ensured. And through the determination of the relational expression, when the fourth lens and the fifth lens are cemented to form a cemented lens, the difference value of the dispersion coefficients of the fourth lens and the fifth lens adopting the cementing process can be controlled within a reasonable range, so that the chromatic aberration of the optical lens is reduced, and the high-quality imaging of the optical lens is realized.

0.8<f123/f456<2；

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 adjusting the distribution proportion of the combined focal length of the first lens, the second lens and the third lens to the combined focal length of the fourth lens, the fifth lens and the sixth lens, the incident angle of incident light can be controlled within a reasonable range, so that the high-order aberration of the optical lens is reduced, and the imaging quality of the optical lens is improved. Meanwhile, through the constraint of the relational expression, the emergent angle of the chief ray emitted from the sixth lens can be reduced, the relative brightness of the optical lens is improved, and the imaging quality of the optical lens is further improved.

5.8<f1/CT1<9；

wherein f1 is the focal length of the first lens element, and CT1 is the thickness of the first lens element on the optical axis.

Since the first lens is a lens which firstly converges incident light in the optical lens, by controlling the ratio of the focal length of the first lens to the thickness of the first lens on the optical axis, the incident light can be made to enter the following lens group (i.e. the second lens to the sixth lens) at a reasonable angle, so as to reduce the pressure of the rear lens group on the light converging effect; meanwhile, through the determination of the relational expression, the phenomena of high-order aberration, high-order spherical aberration, coma aberration and the like of the optical lens can be effectively inhibited, and the imaging quality of the optical lens is improved.

As an optional implementation manner, in an embodiment of the first aspect of the present invention, the optical lens further includes a diaphragm, and the optical lens satisfies the following relation:

2.5<TTL/DOS<3.5；

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 (i.e., a total length of the optical lens), and DOS is a distance on the optical axis from the object-side surface of the first lens element to the stop.

By restricting the ratio of the total length of the optical lens to the distance from the object side surface of the first lens to the diaphragm on the optical axis, the convergence capacity of the optical lens to incident light rays can be ensured, the imaging range of the optical lens is ensured, the relative brightness of the optical lens is improved, and the imaging quality of the optical lens is further improved; meanwhile, the constraint of the relational expression can realize the compactness and rationality of the optical lens so as to realize the miniaturization of the optical lens.

1＜(CT3+d34)/(d12+CT2)<2.5；

wherein CT3 is a thickness of the third lens element on the optical axis, d34 is a distance from an image-side surface of the third lens element to an object-side surface of the fourth lens element on the optical axis, d12 is a distance from the image-side surface of the first lens element to the object-side surface of the second lens element on the optical axis, and CT2 is a thickness of the second lens element on the optical axis.

By limiting the relational expression, light rays of the marginal field of view can be effectively converged, so that the aberration of the optical lens is reduced, the imaging resolution of the optical lens is improved, and the imaging quality of the optical lens is improved; meanwhile, the total length of the optical lens can be controlled by controlling the distance between individual lenses and the thickness of the lenses, so that the compactness of the optical lens structure is ensured, and the miniaturization of the optical lens is realized.

8.8<f3/CT3<13；

wherein f3 is the focal length of the third lens element, and CT3 is the thickness of the third lens element on the optical axis.

Because the light rays are emitted from the second lens with negative refractive power, when the light rays with the marginal field of view are emitted into the imaging surface of the optical lens, larger field curvature is generated, so that the marginal aberration phenomenon is aggravated, and the imaging quality of the optical lens is reduced. Therefore, by controlling the focal length and the thickness of the third lens element, the third lens element can provide positive refractive power to correct the peripheral aberration, improve the resolving power of the optical lens, and further improve the imaging quality of the optical lens; and meanwhile, the thickness of the third lens is limited, so that the optical lens meets the design requirement of light weight while realizing high-quality imaging.

13.5<f45/(CT5-CT4)<33.5；

wherein f45 is a combined focal length of the fourth lens element and the fifth lens element, CT5 is a thickness of the fifth lens element on the optical axis, and CT4 is a thickness of the fourth lens element on the optical axis.

Through reasonable matching of the thickness relationship between the fourth lens element and the fifth lens element, the negative refractive power of the fourth lens element and the positive refractive power of the fifth lens element are also reasonably matched, so that aberrations of the fourth lens element and the fifth lens element can be mutually corrected, the fourth lens element and the fifth lens element provide the minimum aberration contribution ratio for the optical lens, and further the imaging quality of the optical lens is improved.

3.8<CT6/Sags11<6.1；

wherein CT6 is the thickness of the sixth lens element on the optical axis, and Sags11 is the distance from the maximum effective aperture of the object-side surface of the sixth lens element to the intersection point of the object-side surface of the sixth lens element and the optical axis in the optical axis direction.

By limiting the relation, the situation that the thickness of the sixth lens is too large to block the compactness of the structure of the optical lens can be avoided; meanwhile, the situation that the object side surface of the sixth lens is too bent can be avoided, the manufacturing and processing difficulty of the sixth lens is reduced, and the production cost of the optical lens is further reduced.

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 meet the requirement of miniaturization design, and can also realize the characteristics of a large aperture and a long focus and a high-quality imaging effect.

In a third aspect, the present invention discloses an electronic device, which includes a housing and the camera module set according to the second aspect, wherein the camera module set is disposed on the housing. The electronic equipment with the camera module can meet the requirement of miniaturization design, and can also realize the characteristics of a large aperture and a long focus and a high-quality imaging effect.

In a fourth aspect, the present invention discloses an automobile, which includes an automobile body and the camera module set according to the second aspect, wherein the camera module set is disposed on the automobile body to obtain image information. The automobile with the camera module can be beneficial to the acquisition of 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.

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 first lens of the optical lens provides positive refractive power for the optical lens, and the object side surface of the first lens is a convex surface at a paraxial region, and the image side surface of the first lens is a planar surface design at the paraxial region, so that incident light rays with a large angle with the optical axis can enter the optical lens, and at the moment, the incident light rays are effectively converged, and a telescopic structure is further formed; when the incident light passes through the second lens element with negative refractive power, and because the object-side surface and the image-side surface of the second lens element are both concave at the paraxial region, the situation that the outer diameter of the second lens element is too large can be avoided, so that the incident light can be further converged, and the smooth transition of the incident light can be realized; by matching with the third lens with positive refractive power and the surface type design that the image side surface of the third lens is convex at the paraxial region, when incident light passes through the third lens, the light of the central field and the light of the marginal field are effectively converged to correct marginal aberration and improve the resolving power of the optical lens, so that the imaging quality of the optical lens is improved, and meanwhile, the total length of the optical lens can be compressed to realize the miniaturization of the optical lens; when light passes through the fourth lens element with negative refractive power and the object-side surface of the fourth lens element is convex at paraxial region, the fourth lens element enables marginal field light to be effectively converged, so as to correct marginal field aberration generated when incident light passes through the first lens element and the third lens element, thereby improving imaging quality of the optical lens; the positive refractive power provided by the fifth lens element is opposite to the negative refractive power provided by the fourth lens element, so that aberrations generated by the fifth lens element and the fourth lens element can be offset, and the imaging quality of the optical lens is further improved; the image side surface of the sixth lens is concave in the paraxial region, so that the imaging range of the optical lens can be ensured, the outer diameter of the lens of the sixth lens is prevented from being too large, the sixth lens provides positive refractive power or negative refractive power for the optical lens, and when incident light enters the imaging surface of the optical lens through the sixth lens, the sixth lens can balance the aberration which is difficult to correct and is generated by the incident light passing through the front lens groups (the first lens to the fifth lens) and can converge central field light again, the total length of the optical lens is further compressed, the optical lens is miniaturized, meanwhile, the effective inhibiting effect on spherical aberration generated by the optical lens can be realized, and the imaging quality of the optical lens is improved. In addition, the f/EPD of the optical lens is less than or equal to 1.62, so that the optical lens has a long-focus characteristic and simultaneously realizes the characteristic of a large aperture, the imaging brightness of the optical lens is improved, and the imaging quality of the optical lens is further improved.

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 the camera 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 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 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 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, 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 disposed in order from an object side to an image side along an optical axis O; wherein the fourth lens L4 can be cemented with the fifth lens L5 to form a cemented lens. 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. The first lens element L1 has positive refractive power, the second lens element L2 has negative refractive power, the third lens element L3 has positive refractive power, the fourth lens element L4 has negative refractive power, the fifth lens element L5 has positive refractive power, and the sixth lens element L6 has positive refractive power or negative refractive power.

Further, the object-side surface 11 of the first lens element L1 is convex at the paraxial region O, and the image-side surface 12 of the first lens element L1 is planar at the paraxial region O; the object-side surface 21 of the second lens element L2 is concave at the paraxial region O, and the image-side surface 22 of the second lens element L2 is concave at the paraxial region O; the object-side surface 31 of the third lens element L3 is convex or concave at the paraxial region O, and the image-side surface 32 of the third lens element L3 is convex at the paraxial region O; the object-side surface 41 of the fourth lens element L4 is convex at the paraxial region O, and the image-side surface 42 of the fourth lens element L4 is convex or concave at the paraxial region O; the object-side surface 51 of the fifth lens element L5 is convex or concave at the paraxial region O, and the image-side surface 52 of the fifth lens element L5 is convex or concave at the paraxial region O; the object-side surface 61 of the sixth lens element L6 is convex or concave along the optical axis O, and the image-side surface 62 of the sixth lens element L6 is concave along the optical axis O.

In consideration of the fact that the optical lens 100 is often used in electronic devices such as vehicle-mounted devices and automobile recorders or in automobiles and is used as a camera on an automobile body, 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 all be glass lenses, so that the optical lens 100 has a good optical effect and reduces the temperature sensitivity.

Further, for convenience of processing and molding, 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 all be spherical.

In addition, 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, and each lens may be aspheric.

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 between the image-side surface 32 of the third lens L3 and the object-side surface 41 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 side of the optical lens 100 and the object side 11 of the first lens L1, and the setting is adjusted according to practical situations, which is not limited in this embodiment.

In some embodiments, the optical lens 100 further includes an infrared filter 70, and the infrared filter 70 is disposed between the sixth lens L6 and the image plane 101 of the optical lens 100. The infrared filter 70 is selected for filtering infrared light, so that the imaging quality is improved, and the imaging more conforms to the visual experience of human eyes. It is understood that the infrared filter 70 may be made of an optical glass coating, a colored glass, or an infrared filter 70 made of other materials, which may be selected according to actual needs, and is not specifically limited in this embodiment.

Optionally, in order to improve the imaging quality, the optical lens 100 further includes a protective glass 80, the protective glass 80 is disposed between the infrared filter 70 and the imaging surface 101 of the optical lens 100, and the protective glass 80 is used for protecting the optical lens 100. It is understood that in other embodiments, the protection glass 80 may be disposed between other lenses, and the disposition is adjusted according to the actual situation, which is not specifically limited in this embodiment.

In some embodiments, the optical lens 100 satisfies the following relationship: f/EPD is less than or equal to 1.62;

where f is the effective focal length of the optical lens 100, and EPD is the entrance pupil diameter of the optical lens 100.

The constraint of the above relation enables the optical lens 100 to have a long-focus characteristic and realize a large aperture characteristic, thereby improving the brightness of the image formed by the optical lens 100 and further improving the image quality of the optical lens 100.

In some embodiments, the optical lens 100 satisfies the following relationship: 25< Vd4-Vd 5< 45;

vd4 is the abbe number of the fourth lens L4 for d light, and Vd5 is the abbe number of the fifth lens L5 for d light.

Since the selection of the lens material affects the abbe number of each lens, and finally the imaging quality of the optical lens 100 is affected, the image quality of the optical lens 100 can be ensured by selecting a suitable material to obtain the desired abbe number. By determining the above relation, when the fourth lens L4 is cemented with the fifth lens L5 to form a cemented lens, the difference between the abbe numbers of the fourth lens L4 and the fifth lens L5 in the cementing process can be controlled within a reasonable range to reduce the chromatic aberration of the optical lens 100, thereby realizing high-quality imaging of the optical lens 100.

In some embodiments, the optical lens 100 satisfies the following relationship: 0.8< f123/f456< 2;

where f123 is a combined focal length of the first lens L1, the second lens L2, and the third lens L3, and f456 is a combined focal length of the fourth lens L4, the fifth lens L5, and the sixth lens L6.

By reasonably adjusting the distribution ratio of the combined focal length of the first lens L1, the second lens L2, and the third lens L3 to the combined focal length of the fourth lens L4, the fifth lens L5, and the sixth lens L6, the incident angle of the incident light can be controlled within a reasonable range, so as to reduce the high-order aberration of the optical lens 100 and improve the imaging quality of the optical lens 100. Meanwhile, through the constraint of the above relational expression, the exit angle of the chief ray when being emitted from the sixth lens L6 can be reduced, the relative brightness of the optical lens 100 is improved, and the imaging quality of the optical lens 100 is further improved.

In some embodiments, the optical lens 100 satisfies the following relationship: 5.8< f1/CT1< 9;

wherein f1 is the focal length of the first lens element L1, and CT1 is the thickness of the first lens element L1 on the optical axis O.

Since the first lens L1 is the lens of the optical lens 100 that first converges incident light, by controlling the ratio of the focal length of the first lens L1 to the thickness of the first lens L1 on the optical axis O, the incident light can be made to enter the following lens groups (i.e., the second lens L2 to the sixth lens L6) at reasonable angles, so as to reduce the pressure of the rear lens group on the light converging effect; meanwhile, by determining the above relation, the phenomena of high-order aberration, high-order spherical aberration, coma aberration and the like of the optical lens 100 can be effectively suppressed, and the imaging quality of the optical lens 100 is improved. When the ratio exceeds the upper limit, the focal length of the first lens element L1 is too large, which provides insufficient refractive power for the optical lens 100, and is not favorable for suppressing high-order aberration, so that high-order spherical aberration, coma aberration and other phenomena occur, and the resolution and the imaging quality of the optical lens 100 are reduced; when the ratio is lower than the lower limit, the refractive power of the first lens element L1 is too large, so as to increase the incident angle of the light rays incident on the rear lens element (i.e., the second lens element L2 to the sixth lens element L6), and thus the burden of the rear lens element (i.e., the second lens element L2 to the sixth lens element L6) for reducing the angle of the light rays exiting the optical lens system 100 is increased.

In some embodiments, the optical lens 100 satisfies the following relationship: 2.5< TTL/DOS < 3.5;

wherein, TTL is a distance on the optical axis O from the object-side surface 11 of the first lens element L1 to the image plane 101 of the optical lens system 100 (i.e. the total length of the optical lens system 100), and DOS is a distance on the optical axis O from the object-side surface 11 of the first lens element L1 to the stop 102.

By restricting the ratio of the total length of the optical lens 100 to the distance from the object side 11 of the first lens L1 to the diaphragm 102 on the optical axis O, the convergence capability of the optical lens 100 on incident light rays can be ensured, the imaging range of the optical lens 100 is ensured, the relative brightness of the optical lens 100 is improved, and the imaging quality of the optical lens 100 is further improved; meanwhile, through the constraint of the above relational expression, the compactness and rationality of the optical lens 100 can be realized to realize the miniaturization of the optical lens 100. When the ratio exceeds the upper limit, the total length of the optical lens 100 is too long, which is not beneficial to the miniaturization of the optical lens 100; when the ratio is lower than the lower limit, the incident light with a large angle is difficult to enter the optical lens 100, so that the imaging range of the optical lens 100 is reduced, and the imaging quality of the optical lens 100 is affected.

In some embodiments, the optical lens 100 satisfies the following relationship:

1＜(CT3+d34)/(d12+CT2)<2.5；

wherein, CT3 is the thickness of the third lens element L3 on the optical axis O, d34 is the distance between the image-side surface 32 of the third lens element L3 and the object-side surface 41 of the fourth lens element L4 on the optical axis O, d12 is the distance between the image-side surface 12 of the first lens element L1 and the object-side surface 21 of the second lens element L2 on the optical axis O, and CT2 is the thickness of the second lens element L2 on the optical axis O.

By the limitation of the relational expression, the light rays of the marginal field of view can be effectively converged, so that the aberration of the optical lens 100 is reduced, the imaging resolution of the optical lens 100 is improved, and the imaging quality of the optical lens 100 is improved; meanwhile, the total length of the optical lens 100 can be controlled by controlling the distance between individual lenses and the thickness of the lenses, so as to ensure the compactness of the structure of the optical lens 100 and further realize the miniaturization of the optical lens 100. If the ratio is not in the range of the above relation, it is not favorable for correcting the aberration of the optical lens 100, thereby reducing the imaging quality of the optical lens 100; meanwhile, too large air gaps between the lenses or too large lens thickness will increase the overall length of the optical lens 100, which is not favorable for miniaturization of the optical lens 100.

In some embodiments, the optical lens 100 satisfies the following relationship: 8.8< f3/CT3< 13;

wherein f3 is the focal length of the third lens element L3, and CT3 is the thickness of the third lens element L3 on the optical axis O.

Since the light beams are emitted from the second lens element L2 with negative refractive power, when the marginal field rays enter the image plane 101 of the optical lens 100, a larger curvature of field is generated, which aggravates the marginal aberration phenomenon, and degrades the image quality of the optical lens 100. Therefore, by controlling the focal length and the thickness of the third lens element L3, the third lens element L3 can provide positive refractive power to correct the peripheral aberration, thereby improving the resolving power of the optical lens 100 and further improving the imaging quality of the optical lens 100; and at the same time, the thickness of the third lens L3 is limited, so that the optical lens 100 meets the design requirement of light weight while achieving high-quality imaging. When the ratio is lower than the lower limit, the thickness of the third lens L3 is too large on the premise of meeting the performance requirement of the optical lens 100, which is not favorable for the light weight development of the optical lens 100.

In some embodiments, the optical lens 100 satisfies the following relationship: 13.5< f45/(CT5-CT4) < 33.5;

wherein f45 is a combined focal length of the fourth lens L4 and the fifth lens L5, CT5 is a thickness of the fifth lens L5 on the optical axis O, and CT4 is a thickness of the fourth lens L4 on the optical axis O.

By reasonably matching the thickness relationship between the fourth lens element L4 and the fifth lens element L5, the negative refractive power of the fourth lens element L4 and the positive refractive power of the fifth lens element L5 are also reasonably matched, so that the aberrations of the fourth lens element L4 and the fifth lens element L5 can be mutually corrected, the fourth lens element L4 and the fifth lens element L5 provide the minimum aberration contribution ratio for the optical lens 100, and the imaging quality of the optical lens 100 is further improved. When the ratio is lower than the lower limit, the central thickness difference between the fourth lens L4 and the fifth lens L5 is too large, which is not favorable for the gluing process of the fourth lens L4 and the fifth lens L5, and meanwhile, in the environment with large variation of high and low temperature environments, the difference of the cold and hot deformation amounts generated by the thickness difference is large, and the gluing of the fourth lens L4 and the fifth lens L5 is easy to generate the phenomena of glue cracking or glue failure and the like; when the ratio exceeds the upper limit, the combined focal length of the fourth lens element L4 and the fifth lens element L5 is too large, and the optical lens 100 is prone to generate a severe astigmatism, which is not favorable for improving the imaging quality of the optical lens 100.

In some embodiments, the optical lens 100 satisfies the following relationship: 3.8< CT6/Sags11< 6.1;

wherein, CT6 is the thickness of the sixth lens L6 on the optical axis O, and Sags11 is the distance from the maximum effective aperture of the object-side surface 61 of the sixth lens L6 to the intersection point of the object-side surface 61 of the sixth lens L6 and the optical axis O in the direction of the optical axis O.

By limiting the above relational expression, it is possible to avoid a situation in which the thickness of the sixth lens L6 is too large and the compactness of the structure of the optical lens 100 is hindered; meanwhile, the situation that the object side surface 61 of the sixth lens L6 is too curved can be avoided, the manufacturing and processing difficulty of the sixth lens L6 is reduced, and the production cost of the optical lens 100 is further reduced. When the ratio is lower than the lower limit, the object-side surface 61 of the sixth lens element L6 is too curved, which increases the difficulty in processing the lens element and increases the production cost of the optical lens 100, and meanwhile, the object-side surface 61 of the sixth lens element L6 is too curved, which is prone to generate edge aberration and is not favorable for improving the imaging quality of the optical lens 100; when the ratio exceeds the upper limit, the thickness of the sixth lens L6 is too large, which is disadvantageous for the light weight and compact design of the optical lens 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, an optical lens 100 disclosed in the first embodiment of the present application 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, an infrared filter 70, and a protective glass 80, which are sequentially disposed from an object side to an image side along an optical axis O. For materials of 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, reference may be made to the above-mentioned specific embodiments, and details are not repeated here.

Further, the first lens element L1 has positive refractive power, the second lens element L2 has negative refractive power, the third lens element L3 has positive refractive power, the fourth lens element L4 has negative refractive power, the fifth lens element L5 has positive refractive power, and the sixth lens element L6 has negative refractive power.

Further, the object-side surface 11 and the image-side surface 12 of the first lens element L1 are respectively convex and flat at the paraxial region O, the object-side surface 21 and the image-side surface 22 of the second lens element L2 are both concave at the paraxial region O, the object-side surface 31 and the image-side surface 32 of the third lens element L3 are respectively concave and convex at the paraxial region O, the object-side surface 41 and the image-side surface 42 of the fourth lens element L4 are respectively convex and concave at the paraxial region O, the object-side surface 51 and the image-side surface 52 of the fifth lens element L5 are both convex at the paraxial region O, and the object-side surface 61 and the image-side surface 62 of the sixth lens element L6 are respectively convex and concave at the paraxial region O.

Specifically, taking the effective focal length f of the optical lens 100 as 11.81mm, the aperture value FNO of the optical lens 100 as 1.62, and the field angle FOV of the optical lens 100 as 35.3 ° 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 for example, the

surface numbers

1 and 2 correspond to the object side surface and the image side surface of the first lens L1, respectively. The radius Y in table 1 is the radius of curvature of the object-side surface or the image-side surface of the corresponding surface number at the optical axis O. The first value in the "thickness" parameter list of a lens is the thickness of the lens on the optical axis O, and the second value is the distance from the image-side surface to the back surface of the lens on the optical axis O. 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 next surface (the vertex refers to the intersection point of the surface and the optical axis O), the direction from the object side to the image side of the last lens of the first lens L1 is 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 next surface, and if the thickness of the stop 102 is a positive value, the stop 102 is disposed on the left 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 was obtained at a reference wavelength of 546.1 nm.

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 656.3nm, 587.6nm, 546.1nm, 488.0nm, and 435.8 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 546.1 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 546.1 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 546.1 nm.

Second embodiment

A schematic structural diagram of an optical lens 100 disclosed in the second embodiment of the present application is shown in fig. 3, where 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, an infrared filter 70, and a protective glass 80, which are sequentially disposed from an object side to an image side along an optical axis O. For materials of 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, reference may be made to the above-mentioned specific embodiments, and details are not repeated here.

Further, the first lens element L1 has positive refractive power, the second lens element L2 has negative refractive power, the third lens element L3 has positive refractive power, the fourth lens element L4 has negative refractive power, the fifth lens element L5 has positive refractive power, and the sixth lens element L6 has positive refractive power.

Specifically, the effective focal length f of the optical lens 100 is 11.82mm, the aperture value FNO of the optical lens 100 is 1.60, and the field angle FOV of the optical lens 100 is 35.2 °, for example.

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, thickness, and focal length in table 2 are all mm. And the refractive index, Abbe number in Table 2 were obtained at a reference wavelength of 587.6nm, and the focal length was obtained at a reference wavelength of 546.1 nm.

TABLE 2

Referring to fig. 4 (a), fig. 4 (a) shows a light spherical aberration curve of the optical lens 100 in the second embodiment at 656.3nm, 587.6nm, 546.1nm, 488.0nm, and 435.8 nm. 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 (a) in fig. 4, 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 the present 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 546.1 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. 4 that astigmatism of the optical lens 100 is well compensated at this wavelength.

Referring to fig. 4 (C), fig. 4 (C) is a distortion curve diagram of the optical lens 100 in the second embodiment at a wavelength of 546.1 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. 4, the distortion of the optical lens 100 is well corrected at a wavelength of 546.1 nm.

Third embodiment

A schematic structural diagram of an optical lens 100 disclosed in the third embodiment of the present application is shown in fig. 5, where 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, an infrared filter 70, and a protective glass 80, which are sequentially disposed from an object side to an image side along an optical axis O. For materials of 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, reference may be made to the above-mentioned specific embodiments, and details are not repeated here.

Specifically, the effective focal length f of the optical lens 100 is 11.89mm, the aperture value FNO of the optical lens 100 is 1.60, and the field angle FOV of the optical lens 100 is 35.3 °, for example.

Other parameters in the third embodiment are given in the following table 3, 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, thickness, and focal length in table 3 are all mm. And the refractive index, Abbe number in Table 3 were obtained at a reference wavelength of 587.6nm, and the focal length was obtained at a reference wavelength of 546.1 nm.

TABLE 3

Referring to fig. 6 (a), fig. 6 (a) shows a light spherical aberration curve of the optical lens 100 in the third embodiment at 656.3nm, 587.6nm, 546.1nm, 488.0nm, and 435.8 nm. 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 (a) in fig. 6, 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 546.1 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. 6 that astigmatism of the optical lens 100 is well compensated at this wavelength.

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 546.1 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. 6, the distortion of the optical lens 100 is well corrected at a wavelength of 546.1 nm.

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 third lens L3, a stop 102, a fourth lens L4, a fifth lens L5, a sixth lens L6, an infrared filter 70, and a protective glass 80, which are sequentially disposed from an object side to an image side along an optical axis O. For materials of 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, reference may be made to the above-mentioned specific embodiments, and details are not repeated here.

Specifically, the effective focal length f of the optical lens 100 is 11.91mm, the aperture value FNO of the optical lens 100 is 1.60, and the field angle FOV of the optical lens 100 is 35.2 °, for example.

Other parameters in the fourth embodiment are given in the following table 4, 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, thickness, and focal length in table 4 are mm. And the refractive index, Abbe number in Table 4 were obtained at a reference wavelength of 587.6nm, and the focal length was obtained at a reference wavelength of 546.1 nm.

TABLE 4

Referring to fig. 8 (a), fig. 8 (a) shows a light spherical aberration curve of the optical lens 100 in the fourth embodiment at 656.3nm, 587.6nm, 546.1nm, 488.0nm, and 435.8 nm. 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 (a) in fig. 8, 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 546.1 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. 8 that astigmatism of the optical lens 100 is well compensated at this wavelength.

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 546.1 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. 8, the distortion of the optical lens 100 is well corrected at a wavelength of 546.1 nm.

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 third lens L3, a stop 102, a fourth lens L4, a fifth lens L5, a sixth lens L6, an infrared filter 70, and a protective glass 80, which are sequentially disposed from an object side to an image side along an optical axis O. For materials of 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, reference may be made to the above-mentioned specific embodiments, and details are not repeated here.

Specifically, the effective focal length f of the optical lens 100 is 11.95mm, the aperture value FNO of the optical lens 100 is 1.60, and the field angle FOV of the optical lens 100 is 35.3 °, for example.

Other parameters in the fifth embodiment are given in the following table 5, 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, 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 546.1 nm.

TABLE 5

Referring to fig. 10 (a), fig. 10 (a) shows a light spherical aberration curve of the optical lens 100 in the fifth embodiment at 656.3nm, 587.6nm, 546.1nm, 488.0nm, and 435.8 nm. 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 (a) in fig. 10, the spherical aberration value of the optical lens 100 in the fifth embodiment is better, which illustrates 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 546.1 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. 10 that astigmatism of the optical lens 100 is well compensated at this wavelength.

Referring to fig. 10 (C), fig. 10 (C) is a distortion curve diagram of the optical lens 100 in the fifth embodiment at a wavelength of 546.1 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. 10, the distortion of the optical lens 100 is well corrected at a wavelength of 546.1 nm.

Referring to table 6, table 6 summarizes ratios of the relations in the first to fifth embodiments of the present application.

TABLE 6

Relation/embodiment	First embodiment	Second embodiment	Third embodiment	Fourth embodiment	Fifth embodiment
						f/EPD≤1.62	1.620	1.619	1.600	1.603	1.601
25<Vd4-Vd5＜45	44.837	44.837	36.587	30.582	28.512
						0.8<f123/f456<2	1.043	0.975	1.716	1.716	0.984
5.8<f1/CT1<9	6.669	5.832	6.155	7.078	8.830
						2.5<TTL/DOS<3.5	2.855	2.799	2.738	2.681	3.291
1＜(CT3+d34)/(d12+CT2)<2.5	1.721	2.452	2.002	1.132	1.105
						8.8<f3/CT3<13	11.569	8.970	11.902	12.544	10.418
13.5<f45/(CT5-CT4)<33.5	15.892	17.006	13.602	33.334	15.227
						3.8<CT6/Sags11<6.1	4.498	3.995	6.074	5.651	4.746

Referring to fig. 11, 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 fifth 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, which is not described herein again. It can be understood that the image capturing module 200 having the optical lens 100 can achieve the characteristics of a large aperture and a long focal length and a high-quality image forming effect while satisfying the miniaturization design. 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 image, 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 characteristics of a large aperture and a long focal length and a high-quality imaging effect can be achieved while satisfying the miniaturization design. 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 401 and the camera module 200, and the camera module 200 is disposed on the automobile body 401 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 the ADAS system of the automobile 400, the camera module 200 can accurately capture the information (such as the detected object, the detected light source, the detected road sign, etc.) of the road surface in real time to be supplied to the ADAS for analysis and judgment, and respond in time, thereby providing a guarantee for the safety of automatic driving. When the camera module 200 is applied to a driving recording system, a clear visual field can be provided for the driving of a driver, and the safety driving of the driver is guaranteed.

The optical lens, the camera module, the electronic device and the automobile disclosed by the embodiment of the invention are described in detail, a specific example is applied in the description to explain the principle and the embodiment of the invention, 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 idea thereof; 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 includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, which are arranged in order from an object side to an image side along an optical axis;

the fifth lens element with positive refractive power;

the optical lens satisfies the following relation:

f/EPD≤1.62；

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

0.8<f123/f456<2；

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

5.8<f1/CT1<9；

4. An optical lens according to claim 1, characterized in that: the optical lens further comprises a diaphragm, and the optical lens satisfies the following relational expression:

2.5<TTL/DOS<3.5；

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

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

1＜(CT3+d34)/(d12+CT2)<2.5；

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

8.8<f3/CT3<13；

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

13.5<f45/(CT5-CT4)<33.5；

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

3.8<CT6/Sags11<6.1；

9. The utility model provides a module of making a video recording which characterized in that: the camera module comprises an image sensor and an optical lens according to any one of claims 1 to 8, wherein the image sensor is arranged on the image side of the optical lens.

10. An electronic device, characterized in that: the electronic device comprises a housing and the camera module of claim 9, the camera module being disposed on the housing.

11. An automobile, characterized in that: the vehicle comprises a vehicle body and the camera module set according to claim 9, wherein the camera module set is arranged on the vehicle body to acquire image information.