CN114428385B

CN114428385B - Optical lens and electronic device

Info

Publication number: CN114428385B
Application number: CN202011179018.4A
Authority: CN
Inventors: 张俊明; 徐超; 杨佳; 俞魁榜
Original assignee: Ningbo Sunny Automotive Optech Co Ltd
Current assignee: Ningbo Sunny Automotive Optech Co Ltd
Priority date: 2020-10-29
Filing date: 2020-10-29
Publication date: 2024-04-09
Anticipated expiration: 2040-10-29
Also published as: CN114428385A

Abstract

The application discloses an optical lens and electronic equipment comprising the same. The optical lens sequentially comprises from an object side to an image side along an optical axis: the first lens with negative focal power has a convex object side surface and a concave image side surface; a second lens element with negative refractive power having a convex object-side surface and a concave image-side surface; the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface; the object side surface of the fourth lens is a concave surface, and the image side surface of the fourth lens is a convex surface; a fifth lens having optical power; a sixth lens having optical power.

Description

Optical lens and electronic device

Technical Field

The present disclosure relates to the field of optical elements, and more particularly, to an optical lens and an electronic device.

Background

With the rapid development of automobile auxiliary driving technology, the application of the optical lens on automobiles is becoming wider and wider. At the same time, the requirements of users on the imaging quality of the vehicle-mounted lens are also increasing. The range of the image acquired by the vehicle-mounted lens has a critical influence on the safety of a driver.

How to increase the imaging range of the optical lens by increasing the angle of view while ensuring the imaging quality of the optical lens; how to make the optical lens have higher relative illumination so that the optical lens can collect more light; and how to make the optical lens work stably and normally in the environment with larger temperature difference, and keep the characteristics of no deviation of image surface, clear imaging and the like, which is a major difficult problem to be solved by many lens designers at present.

Disclosure of Invention

The application provides an optical lens, this optical lens includes in order from object side to image side along the optical axis: the first lens with negative focal power has a convex object side surface and a concave image side surface; a second lens element with negative refractive power having a convex object-side surface and a concave image-side surface; the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface; the object side surface of the fourth lens is a concave surface, and the image side surface of the fourth lens is a convex surface; a fifth lens having optical power; a sixth lens having optical power.

In one embodiment, the fifth lens element has positive refractive power, wherein the object-side surface thereof is convex and the image-side surface thereof is convex.

In one embodiment, the fifth lens element has negative refractive power, wherein the object-side surface thereof is concave, and the image-side surface thereof is concave.

In one embodiment, the fifth lens element has positive refractive power, wherein the object-side surface thereof is concave and the image-side surface thereof is convex.

In one embodiment, the sixth lens element has negative refractive power, wherein the object-side surface thereof is concave and the image-side surface thereof is concave.

In one embodiment, the sixth lens element has negative refractive power, wherein the object-side surface thereof is concave and the image-side surface thereof is convex.

In one embodiment, the sixth lens element has positive refractive power, wherein the object-side surface thereof is convex and the image-side surface thereof is convex.

In one embodiment, the third lens and the fourth lens have aspherical mirror surfaces.

In one embodiment, the fifth lens and the sixth lens are cemented to form a cemented lens.

In one embodiment, the optical lens may satisfy: TTL/H/FOV is less than or equal to 0.02, wherein TTL is the distance between the center of the object side surface of the first lens and the imaging surface of the optical lens on the optical axis; h is the image height corresponding to the maximum field angle of the optical lens; the FOV is the maximum field angle of the optical lens.

In one embodiment, the optical lens may satisfy: D/H/FOV is less than or equal to 0.02, wherein D is the maximum aperture of the object side surface of the first lens corresponding to the maximum field angle of the optical lens; h is the image height corresponding to the maximum field angle of the optical lens; the FOV is the maximum field angle of the optical lens.

In one embodiment, the optical lens may satisfy: BFL/TL is more than or equal to 0.12, wherein BFL is the distance from the center of the image side surface of the sixth lens to the imaging surface of the optical lens on the optical axis; TL is the distance on the optical axis from the center of the object side surface of the first lens to the center of the image side surface of the sixth lens.

In one embodiment, the optical lens may satisfy: sagS2/SagS1 is more than or equal to 0.8 and less than or equal to 1.6, wherein SagS1 is the distance between the intersection point of the object side surface of the first lens and the optical axis and the maximum light transmission caliber of the object side surface of the first lens on the optical axis; sagS2 represents the distance on the optical axis between the intersection point of the image side surface of the first lens and the optical axis and the maximum aperture of the image side surface of the first lens.

In one embodiment, the optical lens may satisfy: (R3-R4)/(R3+R4) is less than or equal to 1.2, wherein R3 is the curvature radius of the object side surface of the second lens; r4 is the radius of curvature of the image side of the second lens.

In one embodiment, the optical lens may satisfy: F3/F2 is more than or equal to 0.8 and less than or equal to 2, wherein F2 is the effective focal length of the second lens; f3 is the effective focal length of the third lens.

In one embodiment, the optical lens may satisfy: F3/F is less than or equal to 5, wherein F3 is the effective focal length of the third lens; f is the total effective focal length of the optical lens.

In one embodiment, the optical lens may satisfy: F5/F6 is more than or equal to 0.3 and less than or equal to 3, wherein F5 is the effective focal length of the fifth lens; f6 is the effective focal length of the sixth lens.

In one embodiment, the optical lens may satisfy: sagS5/SagS6 is more than or equal to 4, wherein SagS5 is the distance between the intersection point of the object side surface of the third lens and the optical axis and the maximum light transmission caliber of the object side surface of the third lens on the optical axis; sagS6 is the distance between the intersection point of the image side surface of the third lens and the optical axis and the maximum aperture of the image side surface of the third lens on the optical axis.

In one embodiment, the optical lens may satisfy: (FOV x F)/H is more than or equal to 50 degrees, wherein FOV is the maximum field angle of the optical lens; f is the total effective focal length of the optical lens; h is the image height corresponding to the maximum field angle of the optical lens.

In one embodiment, the optical lens may satisfy: F56/F is more than or equal to 4, wherein F56 is the combined focal length of the fifth lens and the sixth lens; f is the total effective focal length of the optical lens.

Another aspect of the present application provides an optical lens. The optical lens sequentially comprises from an object side to an image side along an optical axis: a first lens having negative optical power; a second lens having negative optical power; a third lens having positive optical power; a fourth lens having positive optical power; a fifth lens having optical power; a sixth lens having optical power; the optical lens can satisfy: D/H/FOV is less than or equal to 0.02, wherein D is the maximum aperture of the object side surface of the first lens corresponding to the maximum field angle of the optical lens; h is the image height corresponding to the maximum field angle of the optical lens; the FOV is the maximum field angle of the optical lens.

In one embodiment, the object-side surface of the first lens element is convex and the image-side surface is concave.

In one embodiment, the object-side surface of the second lens element is convex and the image-side surface is concave.

In one embodiment, the object-side surface of the third lens element is convex and the image-side surface is concave.

In one embodiment, the fourth lens element has a concave object-side surface and a convex image-side surface.

Another aspect of the present application provides an electronic device. The electronic device comprises the optical lens provided by the application and an imaging element for converting an optical image formed by the optical lens into an electric signal.

The application adopts six lenses, and the optical lens has at least one beneficial effect of wide angle, miniaturization, high resolution, high relative illuminance, small caliber, low cost, good temperature performance and the like by optimizing the shape, the focal power and the like of each lens.

Drawings

Other features, objects, and advantages of the present application will become more apparent from the following detailed description of the embodiments, taken in conjunction with the accompanying drawings. In the drawings:

fig. 1 is a schematic diagram showing the structure of an optical lens according to embodiment 1 of the present application;

fig. 2 is a schematic diagram showing the structure of an optical lens according to embodiment 2 of the present application;

fig. 3 is a schematic diagram showing the structure of an optical lens according to embodiment 3 of the present application;

fig. 4 is a schematic diagram showing the structure of an optical lens according to embodiment 4 of the present application;

fig. 5 is a schematic view showing the structure of an optical lens according to embodiment 5 of the present application;

fig. 6 is a schematic diagram showing the structure of an optical lens according to embodiment 6 of the present application;

fig. 7 is a schematic view showing the structure of an optical lens according to embodiment 7 of the present application;

fig. 8 is a schematic diagram showing the structure of an optical lens according to embodiment 8 of the present application; and

fig. 9 is a schematic diagram showing the sagittal height of the object side of a lens according to the present application.

Detailed Description

In order to facilitate an understanding of the present application, a more complete description of the present application will now be provided with reference to the relevant figures. It should be understood that these detailed description are merely illustrative of exemplary embodiments of the application and are not intended to limit the scope of the application in any way. Like reference numerals refer to like elements throughout the specification. The expression "and/or" includes any and all combinations of one or more of the associated listed items.

It should be noted that in the present specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the feature. Accordingly, a first lens discussed below may also be referred to as a second lens or a third lens without departing from the teachings of the present application.

In the drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for convenience of explanation. In particular, the spherical or aspherical shape shown in the drawings is shown by way of example. That is, the shape of the spherical or aspherical surface is not limited to the shape of the spherical or aspherical surface shown in the drawings. The figures are merely examples and are not drawn to scale.

Herein, the paraxial region refers to a region near the optical axis. If the lens surface is convex and the convex position is not defined, then the lens surface is convex at least in the paraxial region; if the lens surface is concave and the concave position is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the subject is referred to as the object side of the lens, and the surface of each lens closest to the imaging side is referred to as the image side of the lens.

It will be further understood that the terms "comprises," "comprising," "includes," "including," "having," "containing," and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Furthermore, when a statement such as "at least one of the following" appears after a list of features that are listed, the entire listed feature is modified instead of modifying a separate element in the list. Furthermore, when describing embodiments of the present application, use of "may" means "one or more embodiments of the present application. Also, the term "exemplary" is intended to refer to an example or illustration.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The features, principles, and other aspects of the present application are described in detail below.

In an exemplary embodiment, the optical lens includes, for example, six lenses having optical power, i.e., a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The six lenses are arranged in order from the object side to the image side along the optical axis.

In an exemplary embodiment, the optical lens may further include a photosensitive element disposed at the imaging surface. Alternatively, the photosensitive element provided to the imaging surface may be a photosensitive coupling element (CCD) or a complementary metal oxide semiconductor element (CMOS).

In an exemplary embodiment, the first lens may have negative optical power. The first lens may have a convex-concave shape. The first lens is in a meniscus shape facing the object side, which is favorable for collecting light and increasing the light flux. Preferably, the first lens can use a high refractive index material, which is beneficial to reducing the caliber of the front end and improving the imaging quality.

In an exemplary embodiment, the second lens may have negative optical power. The second lens may have a convex-concave shape. The second lens is in a meniscus shape facing the object side, which is favorable for further collecting light and makes the light smoothly transition. Preferably, the second lens can use high refractive index material, which is beneficial to reducing the caliber of the front end and improving the imaging quality.

In an exemplary embodiment, the third lens may have positive optical power. The third lens may have a convex-concave shape. The focal power and the surface shape of the third lens are favorable for collecting and converging light rays, so that the light rays smoothly enter the rear system. The third lens can adopt an aspheric lens, which is favorable for reducing aberration and improving imaging quality.

In an exemplary embodiment, the fourth lens may have positive optical power. The fourth lens may have a concave-convex shape. The focal power and the surface shape of the fourth lens can make the object side surface of the fourth lens more gentle and the image side surface more curved, thereby being beneficial to diverging light rays. The fourth lens can adopt an aspheric lens, which is favorable for reducing aberration and improving imaging quality.

In an exemplary embodiment, the fifth lens may have positive or negative optical power. The fifth lens may have a convex-convex type, a concave-concave type, or a concave-convex type.

In an exemplary embodiment, the sixth lens may have positive or negative optical power. The sixth lens may have a convex-convex type, a concave-concave type, or a concave-convex type.

As known to those skilled in the art, cemented lenses may be used to minimize chromatic aberration or eliminate chromatic aberration. The use of the cemented lens in the optical lens can improve the image quality and reduce the reflection loss of light energy, thereby realizing high resolution and improving the imaging definition of the lens. In addition, the use of the cemented lens can also simplify the assembly procedure in the lens manufacturing process.

In an exemplary embodiment, the fifth lens and the sixth lens may be cemented to form a cemented lens. The fifth lens element with a convex image side is glued to the sixth lens element with a concave object side or the fifth lens element with a concave image side is glued to the sixth lens element with a convex object side, which is advantageous for smooth transition of the front light to the rear optical system, for reduction of the size of the optical lens, and for improvement of the relative illuminance, CRA and other optical properties of the optical lens while reducing the total length of the optical lens. Of course, the fifth lens and the sixth lens may not be cemented, which is advantageous for improving the resolution.

The adoption of the gluing mode between the lenses has at least one of the following advantages: reducing self chromatic aberration, reducing tolerance sensitivity, and balancing the overall chromatic aberration of the system through residual partial chromatic aberration; the spacing distance between the two lenses is reduced, so that the total length of the system is reduced; the assembly parts between the lenses are reduced, so that the working procedures are reduced, and the cost is lowered; the tolerance sensitivity problems of the lens unit, such as inclination/core deflection and the like, generated in the assembly process are reduced, and the production yield is improved; the light quantity loss caused by reflection among lenses is reduced, and the illumination is improved; further reduces field curvature and effectively corrects off-axis aberrations of the optical lens. The gluing design shares the whole chromatic aberration correction of the system, effectively corrects aberration, improves the resolution, ensures that the whole optical system is compact, and meets the miniaturization requirement.

In an exemplary embodiment, an optical lens according to the present application may satisfy: and F56/F is more than or equal to 4, wherein F56 represents the effective focal length of a cemented lens formed by the fifth lens cemented with the sixth lens, and F is the total effective focal length of the optical lens. The optical lens meets the requirement that |F56/F| is not less than 4, is favorable for controlling the light trend between the fourth lens and the imaging surface of the optical lens, ensures that light smoothly transits to the imaging surface, is favorable for improving relative illuminance, reduces aberration caused by large-angle light entering the fourth lens, improves resolution quality, and simultaneously can ensure that the optical lens has a compact structure and is favorable for miniaturization. More specifically, F56 and F further satisfy: and the F56/F is more than or equal to 5.

In an exemplary embodiment, an optical lens according to the present application may satisfy: TTL/H/FOV is less than or equal to 0.02, wherein TTL is the distance between the center of the object side surface of the first lens and the imaging surface of the optical lens on the optical axis; h is the image height corresponding to the maximum field angle of the optical lens; the FOV is the maximum field angle of the optical lens. The optical lens meets the TTL/H/FOV less than or equal to 0.02 and has the characteristic of miniaturization. More specifically, TTL, H, and FOV can further satisfy: TTL/H/FOV is less than or equal to 0.018.

In an exemplary embodiment, an optical lens according to the present application may satisfy: D/H/FOV is less than or equal to 0.02, wherein D is the maximum aperture of the first lens object side corresponding to the maximum field angle of the optical lens; h is the image height corresponding to the maximum field angle of the optical lens; the FOV is the maximum field angle of the optical lens. The optical lens satisfies D/H/FOV less than or equal to 0.02, has the characteristic of small front end caliber, and can realize miniaturization. More specifically, D, H and FOV can further satisfy: the D/H/FOV is less than or equal to 0.015.

In an exemplary embodiment, an optical lens according to the present application may satisfy: BFL/TL is more than or equal to 0.12, wherein BFL is the distance from the center of the image side surface of the sixth lens to the imaging surface of the optical lens on the optical axis; TL is the distance on the optical axis from the center of the object side surface of the first lens to the center of the image side surface of the sixth lens. The optical lens meets BFL/TL not less than 0.12, can make the back focus BFL longer on the basis of realizing miniaturization, and is beneficial to the assembly of the module. Meanwhile, the total length TL of the lens group is shorter, so that the optical lens is beneficial to compact in structure, the sensitivity of the lens to MTF (Modulation Transfer Function ) is reduced, the production yield is improved, and the production cost is reduced. More specifically, BFL and TL may further satisfy: BFL/TL is greater than or equal to 0.15.

Fig. 9 shows a schematic view of the sagittal height Sag of the object side S of the lens L of the present application. D1 is a half aperture of the maximum aperture of the object side surface S of the lens L corresponding to the maximum angle of view of the optical lens, and the sagittal height Sag is a distance a between the intersection point a of the object side surface S of the lens L and the optical axis and the maximum aperture of the object side surface S of the lens L on the optical axis.

In an exemplary embodiment, an optical lens according to the present application may satisfy: sagS2/SagS1 is more than or equal to 0.8 and less than or equal to 1.6, wherein SagS1 is the distance between the intersection point of the object side surface of the first lens and the optical axis and the maximum light transmission caliber of the object side surface of the first lens on the optical axis; sagS2 represents the distance on the optical axis between the intersection point of the image side surface of the first lens and the optical axis and the maximum aperture of the image side surface of the first lens. The optical lens satisfies the conditions that SagS2/SagS1 is less than or equal to 0.8 and less than or equal to 1.6, is favorable for enabling the shape of the first lens to be close to the concentric circle, is favorable for collecting large-angle light rays, enables the large-angle light rays to smoothly transit to a rear optical system, is favorable for reducing the caliber of the front end of the lens, reduces the volume, is favorable for miniaturization and reduces the cost. More specifically, sams 2 and sams 1 further satisfy: sagS2/SagS1 is less than or equal to 1 and less than or equal to 1.4.

In an exemplary embodiment, an optical lens according to the present application may satisfy: (R3-R4)/(R3+R4) is less than or equal to 1.2, wherein R3 is the curvature radius of the object side surface of the second lens; r4 is the radius of curvature of the image side of the second lens. The optical lens satisfies (R3-R4)/(R3+R4) |less than or equal to 1.2, can correct aberration of the optical lens, and is beneficial to collecting light rays of a front system and smoothly transiting the light rays to a rear system, thereby reducing tolerance sensitivity of the optical lens. More specifically, R3 and R4 may further satisfy: and the ratio of (R3-R4)/(R3+R4) is less than or equal to 0.9.

In an exemplary embodiment, an optical lens according to the present application may satisfy: F3/F2 is more than or equal to 0.8 and less than or equal to 2, wherein F2 is the effective focal length of the second lens; f3 is the effective focal length of the third lens. The optical lens satisfies the requirement of not more than 0.8|F3/F2|not more than 2, and the focal lengths of two adjacent lenses of the second lens and the third lens are similar, so that smooth transition of light is facilitated, and image quality is improved. More specifically, F3 and F2 may further satisfy: F3/F2 is more than or equal to 1.0 and less than or equal to 1.8.

In an exemplary embodiment, an optical lens according to the present application may satisfy: F3/F is less than or equal to 5, wherein F3 is the effective focal length of the third lens; f is the total effective focal length of the optical lens. The optical lens satisfies the condition that the ratio of the F3/F is less than or equal to 5, so that the focal length of the third lens is shorter, light rays can be collected, and as much light rays as possible enter the lens. More specifically, F3 and F further satisfy: the F3/F is less than or equal to 3.5.

In an exemplary embodiment, an optical lens according to the present application may satisfy: F5/F6 is more than or equal to 0.3 and less than or equal to 3, wherein F5 is the effective focal length of the fifth lens; f6 is the effective focal length of the sixth lens. The optical lens meets the requirements of not more than 0.3|F5/F6|not more than 3, is favorable for reducing chromatic aberration and improving image quality, and meanwhile, the focal lengths of the last two lenses are similar, so that the thermal compensation is favorable for improvement. More specifically, F5 and F6 may further satisfy: F5/F6 is more than or equal to 0.5 and less than or equal to 2.8.

In an exemplary embodiment, an optical lens according to the present application may satisfy: sagS5/SagS6 is more than or equal to 4, wherein SagS5 is the distance between the intersection point of the object side surface of the third lens and the optical axis and the maximum light transmission caliber of the object side surface of the third lens on the optical axis; sagS6 represents the distance between the intersection point of the image side surface of the third lens and the optical axis and the maximum aperture of the image side surface of the third lens on the optical axis. The optical lens meets the requirement that SagS5/SagS6 is more than or equal to 4, is favorable for enabling the sagittal height SagS5 of the object side surface and the sagittal height SagS6 of the image side surface of the third lens positioned in the middle to have larger phase difference, is favorable for diverging light rays to enter a rear optical system, is favorable for reducing the caliber of the lens, reduces the volume, is favorable for realizing miniaturization and reduces the cost. More specifically, sagS5 and SagS6 may further satisfy: sagS5/SagS6 is more than or equal to 6.

In an exemplary embodiment, an optical lens according to the present application may satisfy: (FOV x F)/H is more than or equal to 50 degrees, wherein FOV is the maximum field angle of the optical lens; f is the total effective focal length of the optical lens; h is the image height corresponding to the maximum field angle of the optical lens. The optical lens satisfies (FOV multiplied by F)/H more than or equal to 50 degrees, which is beneficial to enabling the optical lens to simultaneously satisfy characteristics of long focus, large field angle and the like and is beneficial to improving relative illuminance. More specifically, FOV, F, and H may further satisfy (FOV×F)/H. Gtoreq.54°.

In an exemplary embodiment, a stop for limiting the light beam may be provided between the third lens and the fourth lens to further improve the imaging quality of the optical lens. The diaphragm is arranged between the third lens and the fourth lens, so that the effective beam converging of the light entering the optical lens is facilitated, the aperture of the lens is reduced, and the total length of the optical lens is shortened. In the present embodiment, the stop may be disposed near the image side of the third lens or near the object side of the fourth lens. It should be noted, however, that the locations of the diaphragms disclosed herein are merely examples and not limiting; in alternative embodiments, the diaphragm may be arranged in other positions as desired.

In an exemplary embodiment, the first, second, fifth, and sixth lenses may be spherical lenses. The third lens and the fourth lens may be aspherical lenses. In particular, in order to improve the resolution quality of the optical system, the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens may each be an aspherical lens. The aspherical lens is characterized in that: the curvature varies continuously from the center to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center to the periphery of the lens, an aspherical lens has a better radius of curvature characteristic, and has advantages of improving distortion aberration and improving astigmatic aberration. After the aspheric lens is adopted, aberration generated during imaging can be eliminated as much as possible, and therefore imaging quality of the lens is improved. The arrangement of the aspheric lens is helpful for correcting system aberration and improving resolution.

The optical lens according to the above-described embodiments of the present application achieves at least one advantageous effect of high resolution, miniaturization, wide angle, good imaging quality, and the like of the optical system by reasonable setting of the respective lens shapes and optical powers in the case of using only six lenses. Meanwhile, the optical lens also meets the requirements of small volume, small front end caliber, low sensitivity and high production yield. The optical lens also has a longer back focal length to facilitate assembly. The optical lens also has the characteristic of small CRA, avoids stray light generated by striking the lens barrel when the rear end of the light is emergent, can be well matched with a vehicle-mounted chip, and does not generate color cast and dark angle phenomena. Meanwhile, the optical lens has good temperature adaptability, small imaging effect change and stable image quality in a high-low temperature environment such as a temperature range of-40 ℃ to 105 ℃.

Specific examples of the optical lens applicable to the above-described embodiments are further described below with reference to the accompanying drawings.

Example 1

An optical lens according to embodiment 1 of the present application is described below with reference to fig. 1. Fig. 1 shows a schematic configuration of an optical lens according to embodiment 1 of the present application.

As shown in fig. 1, the optical lens includes, in order from an object side to an image side along an optical axis, 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.

The first lens element L1 has a meniscus lens element with negative refractive power, a convex object-side surface S1 and a concave image-side surface S2. The second lens L2 is a meniscus lens with negative focal power, and its object-side surface S3 is a convex surface and its image-side surface S4 is a concave surface. The third lens element L3 has a positive meniscus lens element, a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element L4 has a concave object-side surface S8 and a convex image-side surface S9. The fifth lens element L5 has a convex object-side surface S10 and a convex image-side surface S11, respectively, and has positive optical power. The sixth lens element L6 has a concave object-side surface S11 and a convex image-side surface S12. Light from the object passes sequentially through the respective surfaces S1 to S12 and is finally imaged on the imaging plane IMA.

The optical lens may further include a stop STO, which may be disposed between the third lens L3 and the fourth lens L4 to improve imaging quality. For example, the stop STO may be disposed between the third lens L3 and the fourth lens L4 at a position near the image side surface S6 of the third lens L3.

Table 1 shows the radius of curvature R, thickness T/distance d of each lens of the optical lens of embodiment 1 (it is understood that the thickness T/distance d of the row where S1 is located is the center thickness T1 of the first lens L1, and the thickness T/distance d of the row where S2 is located is the distance d12 between the first lens L1 and the second lens L2, and so on), refractive index Nd, and abbe number Vd.

TABLE 1

In embodiment 1, the object-side surface S5 and the image-side surface S6 of the third lens element L3 and the object-side surface S8 and the image-side surface S9 of the fourth lens element L4 may be aspheric, and the surface profile x of each aspheric lens element may be defined by, but not limited to, the following aspheric formula:

wherein x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at the position with the height h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c=1/R (i.e., paraxial curvature c is the inverse of radius of curvature R in table 1 above); k is a conic coefficient; ai is the correction coefficient of the aspherical i-th order. The cone coefficients k and the higher order coefficients A4, A6, A8, a10 and a12 that can be used for each of the aspherical mirror faces S5, S6, S8 and S9 in example 1 are given in table 2 below.

Face number

k

A4

A6

A8

A10

A12

S5

1.6888E+00

-1.5244E-04

-6.7907E-06

1.3430E-06

-6.7617E-08

-1.2663E-09

S6

2.2788E+00

3.7051E-04

2.7588E-05

1.4154E-05

-2.9515E-06

2.5364E-07

S8

-5.0724E+01

-6.6980E-03

5.4464E-04

-1.0930E-04

1.0624E-05

-6.0134E-07

S9

-2.2718E-01

-1.1849E-04

1.5203E-06

2.0047E-08

-2.6259E-08

2.6128E-09

TABLE 2

Example 2

An optical lens according to embodiment 2 of the present application is described below with reference to fig. 2. In this embodiment and the following embodiments, descriptions of portions similar to embodiment 1 will be omitted for brevity. Fig. 2 shows a schematic structural view of an optical lens according to embodiment 2 of the present application.

As shown in fig. 2, the optical lens includes, in order from an object side to an image side along an optical axis, 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.

Table 3 shows the radius of curvature R, thickness T/distance d, refractive index Nd, and abbe number Vd of each lens of the optical lens of example 2. Table 4 shows cone coefficients and higher order coefficients that can be used for each aspherical mirror surface in example 2, wherein each aspherical surface profile can be defined by the formula (1) given in example 1 above.

TABLE 3 Table 3

Face number

k

A4

A6

A8

A10

A12

S5

1.6483E+00

-1.4769E-04

-3.8371E-06

8.4999E-07

-1.3035E-08

-3.7574E-09

S6

-1.0671E+02

4.0202E-04

4.8325E-05

4.8407E-06

-1.5349E-06

1.5193E-07

S8

-4.4804E+01

-6.3760E-03

4.6251E-04

-1.0037E-04

1.0361E-05

-6.4996E-07

S9

-2.3006E-01

-1.1366E-04

6.5115E-07

1.6722E-07

-3.5691E-08

2.8380E-09

TABLE 4 Table 4

Example 3

An optical lens according to embodiment 3 of the present application is described below with reference to fig. 3. Fig. 3 shows a schematic structural view of an optical lens according to embodiment 3 of the present application.

As shown in fig. 3, the optical lens includes, in order from an object side to an image side along an optical axis, 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.

The first lens element L1 has a meniscus lens element with negative refractive power, a convex object-side surface S1 and a concave image-side surface S2. The second lens L2 is a meniscus lens with negative focal power, and its object-side surface S3 is a convex surface and its image-side surface S4 is a concave surface. The third lens element L3 has a positive meniscus lens element, a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element L4 has a concave object-side surface S8 and a convex image-side surface S9. The fifth lens element L5 has a concave object-side surface S10 and a concave image-side surface S11, and has a negative refractive power. The sixth lens element L6 has a convex object-side surface S11 and a convex image-side surface S12, respectively, and has positive optical power. Light from the object passes sequentially through the respective surfaces S1 to S12 and is finally imaged on the imaging plane IMA.

The optical lens may further include a stop STO, which may be disposed between the third lens L3 and the fourth lens L4 to improve imaging quality. For example, the stop STO may be disposed between the third lens L3 and the fourth lens L4 at a position near the object side surface S8 of the fourth lens L4.

Table 5 shows the radius of curvature R, thickness T/distance d, refractive index Nd, and abbe number Vd of each lens of the optical lens of example 3. Table 6 shows cone coefficients and higher order coefficients that can be used for each aspherical mirror surface in example 3, where each aspherical surface profile can be defined by the formula (1) given in example 1 above.

TABLE 5

Face number

k

A4

A6

A8

A10

A12

S5

1.8605E+00

1.1725E-04

3.3276E-05

-3.0291E-05

3.4236E-06

-1.1160E-07

S6

7.1380E+01

3.7051E-04

2.7588E-05

1.4154E-05

-2.9515E-06

2.5364E-07

S8

-1.2197E+03

-6.2021E-03

1.2415E-04

-5.5589E-05

-6.8649E-06

1.4708E-06

S9

-1.9479E-01

-1.1778E-04

3.6344E-05

3.1102E-06

-1.5529E-06

9.5166E-08

TABLE 6

Example 4

An optical lens according to embodiment 4 of the present application is described below with reference to fig. 4. Fig. 4 shows a schematic structural view of an optical lens according to embodiment 4 of the present application.

As shown in fig. 4, the optical lens includes, in order from an object side to an image side along an optical axis, 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.

Table 7 shows the radius of curvature R, thickness T/distance d, refractive index Nd, and abbe number Vd of each lens of the optical lens of example 4. Table 8 shows cone coefficients and higher order coefficients that can be used for each aspherical mirror surface in example 4, where each aspherical surface profile can be defined by the formula (1) given in example 1 above.

TABLE 7

Face number

k

A4

A6

A8

A10

A12

S5

1.7832E+00

1.1197E-04

1.2161E-05

-2.9871E-05

3.5674E-06

-1.1022E-07

S6

7.1380E+01

3.7051E-04

2.7588E-05

1.4154E-05

-2.9515E-06

2.5364E-07

S8

-1.4657E+03

-5.4557E-03

1.2317E-04

-6.1456E-05

-7.5435E-06

1.3279E-06

S9

-1.8024E-01

-1.4188E-04

3.0127E-05

1.5257E-06

-1.5531E-06

1.0594E-07

TABLE 8

Example 5

An optical lens according to embodiment 5 of the present application is described below with reference to fig. 5. Fig. 5 shows a schematic structural view of an optical lens according to embodiment 5 of the present application.

As shown in fig. 5, the optical lens includes, in order from an object side to an image side along an optical axis, 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.

The first lens element L1 has a meniscus lens element with negative refractive power, a convex object-side surface S1 and a concave image-side surface S2. The second lens L2 is a meniscus lens with negative focal power, and its object-side surface S3 is a convex surface and its image-side surface S4 is a concave surface. The third lens element L3 has a positive meniscus lens element, a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element L4 has a concave object-side surface S8 and a convex image-side surface S9. The fifth lens element L5 has a concave object-side surface S10 and a convex image-side surface S11. The sixth lens element L6 has a concave object-side surface S11 and a concave image-side surface S12, respectively, and has a negative refractive power. Light from the object passes sequentially through the respective surfaces S1 to S12 and is finally imaged on the imaging plane IMA.

Table 9 shows the radius of curvature R, thickness T/distance d, refractive index Nd, and abbe number Vd of each lens of the optical lens of example 5. Table 10 shows cone coefficients and higher order coefficients that can be used for each aspherical mirror surface in example 5, where each aspherical surface profile can be defined by the formula (1) given in example 1 above.

TABLE 9

Face number

k

A4

A6

A8

A10

A12

S5

1.9720E+00

2.1135E-04

6.2515E-05

-2.9634E-05

3.1517E-06

-1.2541E-07

S6

7.1380E+01

3.7051E-04

2.7588E-05

1.4154E-05

-2.9515E-06

2.5364E-07

S8

-8.9986E+02

-7.1498E-03

3.6133E-04

-5.0867E-05

-9.0316E-06

1.0191E-06

S9

-2.1613E-01

-8.2768E-05

4.4345E-05

4.8803E-06

-1.3978E-06

6.5703E-08

Table 10

Example 6

An optical lens according to embodiment 6 of the present application is described below with reference to fig. 6. Fig. 6 shows a schematic structural view of an optical lens according to embodiment 6 of the present application.

As shown in fig. 6, the optical lens includes, in order from an object side to an image side along an optical axis, 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.

Table 11 shows the radius of curvature R, thickness T/distance d, refractive index Nd, and abbe number Vd of each lens of the optical lens of example 6. Table 12 shows cone coefficients and higher order term coefficients that can be used for each aspherical mirror surface in example 6, where each aspherical surface profile can be defined by the formula (1) given in example 1 above.

TABLE 11

Face number

k

A4

A6

A8

A10

A12

S5

1.9704E+00

2.1174E-04

6.2186E-05

-2.9634E-05

3.1453E-06

-1.2323E-07

S6

7.1380E+01

3.7051E-04

2.7588E-05

1.4154E-05

-2.9515E-06

2.5364E-07

S8

-9.0050E+02

-7.1837E-03

3.2736E-04

-4.5642E-05

-8.7633E-06

9.7400E-07

S9

-2.1608E-01

-8.2935E-05

4.4273E-05

4.8507E-06

-1.3981E-06

6.6125E-08

Table 12

Example 7

An optical lens according to embodiment 7 of the present application is described below with reference to fig. 7. Fig. 7 shows a schematic structural view of an optical lens according to embodiment 7 of the present application.

As shown in fig. 7, the optical lens includes, in order from an object side to an image side along an optical axis, 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.

The first lens element L1 has a meniscus lens element with negative refractive power, a convex object-side surface S1 and a concave image-side surface S2. The second lens L2 is a meniscus lens with negative focal power, and its object-side surface S3 is a convex surface and its image-side surface S4 is a concave surface. The third lens element L3 has a positive meniscus lens element, a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element L4 has a concave object-side surface S8 and a convex image-side surface S9. The fifth lens element L5 has a convex object-side surface S10 and a convex image-side surface S11, respectively, and has positive optical power. The sixth lens element L6 has a concave object-side surface S11 and a concave image-side surface S12, respectively, and has a negative refractive power. Light from the object passes sequentially through the respective surfaces S1 to S12 and is finally imaged on the imaging plane IMA.

Table 13 shows the radius of curvature R, thickness T/distance d, refractive index Nd, and abbe number Vd of each lens of the optical lens of example 7. Table 14 shows cone coefficients and higher order term coefficients that can be used for each aspherical mirror surface in example 7, where each aspherical surface profile can be defined by the formula (1) given in example 1 above.

TABLE 13

Face number

k

A4

A6

A8

A10

A12

S5

1.8453E+00

-1.4836E-04

3.3410E-05

-1.5008E-05

1.8262E-06

-8.3777E-08

S6

7.1380E+01

3.7051E-04

2.7588E-05

1.4154E-05

-2.9515E-06

2.5364E-07

S8

-8.1667E+01

-5.9490E-03

3.0307E-04

-8.1111E-05

1.1983E-05

-9.3213E-07

S9

-1.8416E-01

-1.4575E-04

5.8855E-06

5.6903E-07

-7.8207E-08

3.3265E-09

TABLE 14

Example 8

An optical lens according to embodiment 8 of the present application is described below with reference to fig. 8. Fig. 8 shows a schematic structural view of an optical lens according to embodiment 8 of the present application.

As shown in fig. 8, the optical lens includes, in order from an object side to an image side along an optical axis, 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.

Table 15 shows the radius of curvature R, thickness T/distance d, refractive index Nd, and abbe number Vd of each lens of the optical lens of example 8. Table 16 shows cone coefficients and higher order coefficients that can be used for each aspherical mirror in example 8, where each aspherical mirror type can be defined by the formula (1) given in example 1 above.

TABLE 15

Face number

k

A4

A6

A8

A10

A12

S5

1.8875E+00

-1.5767E-04

-1.1263E-06

-1.1602E-05

1.9112E-06

-1.0409E-07

S6

-2.2023E+01

3.7051E-04

2.7588E-05

1.4154E-05

-2.9515E-06

2.5364E-07

S8

-8.8001E+01

-6.3284E-03

4.9631E-04

-1.2002E-04

1.4036E-05

-8.5356E-07

S9

-1.8508E-01

-1.4504E-04

5.8894E-06

3.9176E-07

-5.2590E-08

2.4311E-09

Table 16

In summary, examples 1 to 8 satisfy the relationships shown in tables 17-1 and 17-2, respectively, below. In tables 17-1 and 17-2, F, TTL, TL, H, BFL, D, R, R4, sagS1, sagS2, sagS5, sagS6, F1, F2, F3, F4, F5, F6, F56 are in millimeters (mm) and FOV is in degrees (°).

Conditional\embodiment	Example 1	Example 2	Example 3	Example 4
					F	3.12	3.15	3.18	3.16
TTL	33.68	33.83	32.92	32.88
					TL	28.05	28.07	26.41	26.78
FOV	206.4	206.4	206.4	206.4
					H	10.36	10.49	10.97	10.64
BFL	5.63	5.75	6.51	6.10
					D	28.50	28.53	29.03	29.05
SagS1	4.84	4.86	5.05	5.06
					SagS2	5.97	5.98	6.14	6.15
SagS5	1.14	1.14	1.35	1.33
					SagS6	0.10	0.09	0.12	0.12
F1	-17.62	-17.63	-18.09	-18.09
					F2	-7.22	-7.22	-6.54	-6.53
F3	10.40	10.39	10.33	10.39
					F4	16.00	16.19	7.52	7.44
F5	8.46	8.49	-13.48	-13.99
					F6	-14.09	-14.09	18.84	20.41
F56	17.69	17.87	-58.37	-51.00
					TTL/H/FOV	0.0157	0.0156	0.0145	0.0150
D/H/FOV	0.0133	0.0132	0.0128	0.0132
					BFL/TL	0.201	0.170	0.198	0.186
\|(R3-R4)/(R3+R4)\|	0.703	0.703	0.781	0.782
					SagS2/SagS1	1.23	1.23	1.22	1.22
SagS5/SagS6	11.86	12.18	11.34	11.49
					\|F3/F2\|	1.44	1.44	1.58	1.59
\|F3/F\|	3.33	3.29	3.25	3.28
					\|F5/F6\|	0.60	0.60	0.72	0.69
(FOV×F)/H	62.20	62.03	59.80	61.33
					\|F56/F\|	5.66	5.67	18.37	16.12

TABLE 17-1

/>

TABLE 17-2

The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the invention referred to in this application is not limited to the specific combinations of features described above, but it is intended to cover other embodiments in which any combination of features described above or equivalents thereof is possible without departing from the spirit of the invention. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other.

Claims

1. The optical lens is characterized by comprising, in order from an object side to an image side along an optical axis:

the first lens with negative focal power has a convex object side surface and a concave image side surface;

a second lens element with negative refractive power having a convex object-side surface and a concave image-side surface;

the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface;

the object side surface of the fourth lens is a concave surface, and the image side surface of the fourth lens is a convex surface;

a fifth lens having optical power; and

a sixth lens having optical power;

the optical lens satisfies the following conditions: 4 < F56/F < 18.37, wherein F56 is the combined focal length of the fifth lens and the sixth lens; f is the total effective focal length of the optical lens;

the number of lenses with focal power in the optical lens is six.

2. The optical lens of claim 1, wherein the fifth lens element has positive optical power and has a convex object-side surface and a convex image-side surface.

3. The optical lens of claim 1, wherein the fifth lens element has negative optical power and has a concave object-side surface and a concave image-side surface.

4. The optical lens of claim 1, wherein the fifth lens element has positive optical power and has a concave object-side surface and a convex image-side surface.

5. The optical lens of claim 1, wherein the sixth lens element has negative optical power and has a concave object-side surface and a concave image-side surface.

6. The optical lens of claim 1, wherein the sixth lens element has negative optical power and has a concave object-side surface and a convex image-side surface.

7. The optical lens of claim 1, wherein the sixth lens element has positive optical power and has a convex object-side surface and a convex image-side surface.

8. The optical lens of claim 1, wherein the third lens and the fourth lens have aspherical mirror surfaces.

9. The optical lens of claim 1, wherein the fifth lens and the sixth lens are cemented to form a cemented lens.

10. The optical lens according to any one of claims 1 to 9, characterized in that: TTL/H/FOV is multiplied by 180 degrees and is less than or equal to 3.6, wherein TTL is the distance from the center of the object side surface of the first lens to the imaging surface of the optical lens on the optical axis; h is the image height corresponding to the maximum field angle of the optical lens; the FOV is the maximum field angle of the optical lens.

11. The optical lens according to any one of claims 1 to 9, characterized in that: D/H/FOV is multiplied by 180 degrees and is less than or equal to 3.6, wherein D is the maximum aperture of light passing of the object side surface of the first lens corresponding to the maximum field angle of the optical lens; h is the image height corresponding to the maximum field angle of the optical lens; the FOV is the maximum field angle of the optical lens.

12. The optical lens according to any one of claims 1 to 9, characterized in that: BFL/TL is more than or equal to 0.12, wherein BFL is the distance from the center of the image side surface of the sixth lens to the imaging surface of the optical lens on the optical axis; TL is a distance on the optical axis from the center of the object side surface of the first lens to the center of the image side surface of the sixth lens.

13. The optical lens according to any one of claims 1 to 9, characterized in that: sagS2/SagS1 is more than or equal to 0.8 and less than or equal to 1.6, wherein SagS1 is the distance between the intersection point of the object side surface of the first lens and the optical axis and the maximum light transmission caliber of the object side surface of the first lens on the optical axis; sagS2 represents the distance between the intersection point of the image side surface of the first lens and the optical axis and the maximum light transmission caliber of the image side surface of the first lens on the optical axis.

14. The optical lens according to any one of claims 1 to 9, characterized in that: (R3-R4)/(R3+R4) is less than or equal to 1.2, wherein R3 is the radius of curvature of the object side surface of the second lens; r4 is the radius of curvature of the image side of the second lens.

15. The optical lens according to any one of claims 1 to 9, characterized in that: F3/F2 is more than or equal to 0.8 and less than or equal to 2, wherein F2 is the effective focal length of the second lens; f3 is the effective focal length of the third lens.

16. The optical lens according to any one of claims 1 to 9, characterized in that: F3/F is less than or equal to 5, wherein F3 is the effective focal length of the third lens; f is the total effective focal length of the optical lens.

17. The optical lens according to any one of claims 1 to 9, characterized in that: F5/F6 is more than or equal to 0.3 and less than or equal to 3, wherein F5 is the effective focal length of the fifth lens; f6 is the effective focal length of the sixth lens.

18. The optical lens according to any one of claims 1 to 9, characterized in that: sagS5/SagS6 is more than or equal to 4, wherein SagS5 is the distance between the intersection point of the object side surface of the third lens and the optical axis and the maximum light transmission caliber of the object side surface of the third lens on the optical axis; sagS6 is the distance between the intersection point of the image side surface of the third lens and the optical axis and the maximum light transmission caliber of the image side surface of the third lens on the optical axis.

19. The optical lens according to any one of claims 1 to 9, characterized in that: (FOV x F)/H is greater than or equal to 50 degrees, wherein FOV is the maximum field angle of the optical lens; f is the total effective focal length of the optical lens; and H is the image height corresponding to the maximum field angle of the optical lens.

20. The optical lens of claim 10, wherein: 2.592 is less than or equal to TTL/H/FOV multiplied by 180 degrees is less than or equal to 3.24, wherein TTL is the distance from the center of the object side surface of the first lens to the imaging surface of the optical lens on the optical axis; h is the image height corresponding to the maximum field angle of the optical lens; the FOV is the maximum field angle of the optical lens.

21. The optical lens of claim 11, wherein: 2.286 is less than or equal to D/H/FOV multiplied by 180 degrees is less than or equal to 2.394, wherein D is the maximum aperture of light passing through the object side surface of the first lens corresponding to the maximum field angle of the optical lens; h is the image height corresponding to the maximum field angle of the optical lens; the FOV is the maximum field angle of the optical lens.

22. The optical lens of claim 12, wherein: BFL is the distance between the center of the image side surface of the sixth lens and the imaging surface of the optical lens on the optical axis, wherein BFL is more than or equal to 0.12 and less than or equal to 0.201; TL is a distance on the optical axis from the center of the object side surface of the first lens to the center of the image side surface of the sixth lens.

23. The optical lens of claim 14, wherein: 0.703 < 1.2 > (R3-R4)/(R3+R4) < 1.3 > wherein R3 is the radius of curvature of the object side of the second lens; r4 is the radius of curvature of the image side of the second lens.

24. The optical lens is characterized by comprising, in order from an object side to an image side along an optical axis:

a first lens having negative optical power;

a second lens having negative optical power;

a fourth lens having positive optical power;

a fifth lens having optical power; and

a sixth lens having optical power;

the optical lens satisfies the following conditions: D/H/FOV is multiplied by 180 degrees and is less than or equal to 3.6, wherein D is the maximum aperture of light passing of the object side surface of the first lens corresponding to the maximum field angle of the optical lens; h is the image height corresponding to the maximum field angle of the optical lens; the FOV is the maximum field angle of the optical lens;

the number of lenses with focal power in the optical lens is six.

25. The optical lens of claim 24, wherein the first lens element has a convex object-side surface and a concave image-side surface.

26. The optical lens of claim 24, wherein the second lens element has a convex object-side surface and a concave image-side surface.

27. The optical lens of claim 24, wherein the fourth lens element has a concave object-side surface and a convex image-side surface.

28. The optical lens of claim 24, wherein the fifth lens element has positive optical power and has a convex object-side surface and a convex image-side surface.

29. The optical lens of claim 24, wherein the fifth lens element has negative optical power and has a concave object-side surface and a concave image-side surface.

30. The optical lens of claim 24, wherein the fifth lens element has positive optical power and has a concave object-side surface and a convex image-side surface.

31. The optical lens of claim 24, wherein the sixth lens element has negative optical power and has a concave object-side surface and a concave image-side surface.

32. The optical lens of claim 24, wherein the sixth lens element has negative optical power and has a concave object-side surface and a convex image-side surface.

33. The optical lens of claim 24, wherein the sixth lens element has positive optical power and has a convex object-side surface and a convex image-side surface.

34. The optical lens of claim 24, wherein the third lens and the fourth lens have aspherical mirror surfaces.

35. The optical lens of claim 24, wherein the fifth lens and the sixth lens are cemented to form a cemented lens.

36. The optical lens of any one of claims 24-35, wherein: TTL/H/FOV is multiplied by 180 degrees and is less than or equal to 3.6, wherein TTL is the distance from the center of the object side surface of the first lens to the imaging surface of the optical lens on the optical axis; h is the image height corresponding to the maximum field angle of the optical lens; the FOV is the maximum field angle of the optical lens.

37. The optical lens of any one of claims 24-35, wherein: BFL/TL is more than or equal to 0.12, wherein BFL is the distance from the center of the image side surface of the sixth lens to the imaging surface of the optical lens on the optical axis; TL is a distance on the optical axis from the center of the object side surface of the first lens to the center of the image side surface of the sixth lens.

38. The optical lens of any one of claims 24-35, wherein: sagS2/SagS1 is more than or equal to 0.8 and less than or equal to 1.6, wherein SagS1 is the distance between the intersection point of the object side surface of the first lens and the optical axis and the maximum light transmission caliber of the object side surface of the first lens on the optical axis; sagS2 represents the distance between the intersection point of the image side surface of the first lens and the optical axis and the maximum light transmission caliber of the image side surface of the first lens on the optical axis.

39. The optical lens of any one of claims 24-35, wherein: (R3-R4)/(R3+R4) is less than or equal to 1.2, wherein R3 is the radius of curvature of the object side surface of the second lens; r4 is the radius of curvature of the image side of the second lens.

40. The optical lens of any one of claims 24-35, wherein: F3/F2 is more than or equal to 0.8 and less than or equal to 2, wherein F2 is the effective focal length of the second lens; f3 is the effective focal length of the third lens.

41. The optical lens of any one of claims 24-35, wherein: F3/F is less than or equal to 5, wherein F3 is the effective focal length of the third lens; f is the total effective focal length of the optical lens.

42. The optical lens of any one of claims 24-35, wherein: F5/F6 is more than or equal to 0.3 and less than or equal to 3, wherein F5 is the effective focal length of the fifth lens; f6 is the effective focal length of the sixth lens.

43. The optical lens of any one of claims 24-35, wherein: sagS5/SagS6 is more than or equal to 4, wherein SagS5 is the distance between the intersection point of the object side surface of the third lens and the optical axis and the maximum light transmission caliber of the object side surface of the third lens on the optical axis; sagS6 is the distance between the intersection point of the image side surface of the third lens and the optical axis and the maximum light transmission caliber of the image side surface of the third lens on the optical axis.

44. The optical lens of any one of claims 24-35, wherein: (FOV x F)/H is greater than or equal to 50 degrees, wherein FOV is the maximum field angle of the optical lens; f is the total effective focal length of the optical lens; and H is the image height corresponding to the maximum field angle of the optical lens.

45. The optical lens of claim 36, wherein: 2.592 is less than or equal to TTL/H/FOV multiplied by 180 degrees is less than or equal to 3.24, wherein TTL is the distance from the center of the object side surface of the first lens to the imaging surface of the optical lens on the optical axis; h is the image height corresponding to the maximum field angle of the optical lens; the FOV is the maximum field angle of the optical lens.

46. The optical lens of claim 24, wherein: 2.286 is less than or equal to D/H/FOV multiplied by 180 degrees is less than or equal to 2.394, wherein D is the maximum aperture of light passing through the object side surface of the first lens corresponding to the maximum field angle of the optical lens; h is the image height corresponding to the maximum field angle of the optical lens; the FOV is the maximum field angle of the optical lens.

47. The optical lens of claim 37, wherein: BFL is the distance between the center of the image side surface of the sixth lens and the imaging surface of the optical lens on the optical axis, wherein BFL is more than or equal to 0.12 and less than or equal to 0.201; TL is a distance on the optical axis from the center of the object side surface of the first lens to the center of the image side surface of the sixth lens.

48. The optical lens of claim 39, wherein: 0.703 < 1.2 > (R3-R4)/(R3+R4) < 1.3 > wherein R3 is the radius of curvature of the object side of the second lens; r4 is the radius of curvature of the image side of the second lens.

49. An electronic device comprising an optical lens according to any one of claims 1 to 48 and an imaging element for converting an optical image formed by the optical lens into an electrical signal.