Optical lens and electronic device

Abstract

The application discloses an optical lens which comprises, in order from the object side to the image side along the optical axis, a first lens with negative refractive power, the object side surface of which is a convex surface and the image side surface of which is a concave surface; a second lens with positive refractive power, the object side surface of which is a convex surface and the image side surface of which is a convex surface; a third lens with positive refractive power, the object side surface of which is a convex surface; a fourth lens with negative refractive power; a fifth lens with refractive power; and a sixth lens with refractive power, wherein the number of lenses with refractive power in the optical lens is six; the total effective focal length F of the optical lens and the curvature radius R1 of the object side surface of the first lens satisfy 0.5<=|F / R1|<=2.5; and the effective focal length F1 of the first lens and the effective focal length F2 of the second lens satisfy |F1 / F2|>=2.5.

Description

[0001] Divisional application

[0002] This application is a divisional application of the China Invention Patent Application No. 202011189079.9, filed on October 30, 2020, entitled “Optical Lens and Electronic Device”, and claiming the priority of the Chinese Patent Application No. 202011189079.9, filed on October 30, 2020. TECHNICAL FIELD

[0003] The present application relates to the field of optical elements, and in particular to an optical lens and an electronic device. BACKGROUND

[0004] In recent years, with the rapid development of the automobile auxiliary driving system, the optical lens is more and more widely used in the automobile, and at the same time, the pixel requirement of the vehicle-mounted optical lens is also higher and higher. At present, more and more optical lens manufacturers begin to study how to make the vehicle-mounted front-view optical lens stable in imaging under high and low temperature environment.

[0005] Generally, the user has very high requirements on the imaging performance of the vehicle-mounted front-view optical lens for safety consideration, so the vehicle-mounted front-view optical lens needs to have higher pixels on the basis of miniaturization. For example, in order to improve the resolving power of the vehicle-mounted front-view optical lens, 7 pieces or even more lens structures are usually selected to form the vehicle-mounted front-view optical lens, but too many lens structures will seriously affect the miniaturization of the vehicle-mounted front-view optical lens. In addition, the vehicle-mounted front-view optical lens also needs to have higher stability to avoid the decline of optical performance under temperature difference.

[0006] Therefore, how to make the optical lens have miniaturization, high resolving power, low cost and better temperature performance at the same time is one of the difficult problems to be solved by many lens designers at present. SUMMARY

[0007] The present application provides an optical lens which can be mounted on a vehicle and can at least solve or partially solve at least one of the above-mentioned disadvantages in the prior art.

[0008] An aspect of the present application provides an optical lens, which comprises, in order from the object side to the image side along the optical axis, a first lens having a negative focal power, an object side surface of which is a convex surface and an image side surface of which is a concave surface; a second lens having a positive focal power, an object side surface of which is a convex surface and an image side surface of which is a convex surface; a third lens having a positive focal power, an object side surface of which is a convex surface; a fourth lens having a negative focal power; a fifth lens having a focal power; and a sixth lens having a focal power, wherein the number of lenses having a focal power in the optical lens is six. The total effective focal length F of the optical lens and the curvature radius R1 of the object side surface of the first lens satisfy: 0.5≤|F / R1|≤2.5; and the effective focal length F1 of the first lens and the effective focal length F2 of the second lens satisfy: |F1 / F2|≥2.5.

[0009] In one embodiment, the image-side surface of the third lens is convex or concave.

[0010] In one embodiment, the object-side surface of the fourth lens is convex or concave, and the image-side surface is concave.

[0011] In one embodiment, the fifth lens has positive refractive power, the object-side surface is concave, and the image-side surface is convex; or the fifth lens has positive refractive power, the object-side surface is convex, and the image-side surface is convex; or the fifth lens has positive refractive power, the object-side surface is convex, and the image-side surface is concave.

[0012] In one embodiment, the fifth lens has negative refractive power, the object-side surface is convex, and the image-side surface is concave; or the fifth lens has negative refractive power, the object-side surface is concave, and the image-side surface is concave.

[0013] In one embodiment, the sixth lens has negative refractive power, the object-side surface is concave, and the image-side surface is concave; or the sixth lens has negative refractive power, the object-side surface is convex, and the image-side surface is concave; or the sixth lens has negative refractive power, the object-side surface is concave, and the image-side surface is convex.

[0014] In one embodiment, the sixth lens has positive refractive power, the object-side surface is convex, and the image-side surface is convex; or the sixth lens has positive refractive power, the object-side surface is convex, and the image-side surface is concave; or the sixth lens has positive refractive power, the object-side surface is concave, and the image-side surface is convex.

[0015] In one embodiment, the third lens and the fourth lens can form a cemented lens.

[0016] In one embodiment, the first lens and the sixth lens can be aspherical lenses.

[0017] In one embodiment, the total effective focal length F of the optical lens and the radius of curvature R1 of the object-side surface of the first lens satisfy: 1.3≤|F / R1|≤2.5.

[0018] In one embodiment, the effective focal length F1 of the first lens and the effective focal length F2 of the second lens satisfy: 2.5≤|F1 / F2|≤5.2.

[0019] In one embodiment, the effective focal length F1 of the first lens and the total effective focal length F of the optical lens satisfy: |F1 / F|≥2.5.

[0020] In one embodiment, the effective focal length F1 of the first lens and the total effective focal length F of the optical lens satisfy: 2.5≤|F1 / F|≤4.3.

[0021] In an embodiment, a distance TTL on the optical axis from the center of the object side surface of the first lens to the imaging surface of the optical lens and a total effective focal length F of the optical lens satisfy: TTL / F≤2.

[0022] In an embodiment, a distance TTL on the optical axis from the center of the object side surface of the first lens to the imaging surface of the optical lens and a total effective focal length F of the optical lens satisfy: 1≤TTL / F≤2.

[0023] In an embodiment, an effective focal length F2 of the second lens and a total effective focal length F of the optical lens satisfy: 0.7≤|F2 / F|≤2.

[0024] In an embodiment, a distance TTL on the optical axis from the center of the object side surface of the first lens to the imaging surface of the optical lens and a distance BFL on the optical axis from the center of the image side surface of the sixth lens to the imaging surface satisfy: 0.07≤BFL / TTL≤0.2.

[0025] In an embodiment, a maximum field of view FOV of the optical lens, a maximum light passing aperture D of the object side surface of the first lens corresponding to the maximum field of view of the optical lens, and an image height H corresponding to the maximum field of view of the optical lens satisfy: 1.8≤D / H / FOV×180°≤18.

[0026] In an embodiment, an effective focal length F3 of the third lens and an effective focal length F4 of the fourth lens satisfy: 1≤|F3 / F4|≤2.

[0027] In an embodiment, a curvature radius R4 of the object side surface of the second lens and a curvature radius R5 of the image side surface of the second lens satisfy: 3≤|(R4-R5) / (R4+R5)|≤7.6.

[0028] In an embodiment, a curvature radius R1 of the object side surface of the first lens and a curvature radius R2 of the image side surface of the first lens satisfy: 1.4≤|R1 / R2|≤3.6.

[0029] In an embodiment, a distance TTL on the optical axis from the center of the object side surface of the first lens to the imaging surface of the optical lens, a maximum field of view FOV of the optical lens, and an image height H corresponding to the maximum field of view of the optical lens satisfy: 9≤TTL / H / FOV×180°≤27.

[0030] In one embodiment, the optical lens satisfies at least one of the following conditions: 1.3≤|F / R1|≤2.1, 3.6≤|F1 / F2|≤5.2, 2.9≤|F1 / F|≤4.3, 1.7≤TTL / F≤1.8, 0.7≤|F2 / F|≤0.83, 0.1≤BFL / TTL≤0.13, 5.76≤D / H / FOV×180°≤6.48, 1.2≤|F3 / F4|≤1.7, 1.4≤|R1 / R2|≤1.6, 15.12≤TTL / H / FOV×180°≤16.2, 2.1≤|F34 / F|≤70, 0.12≤|R11 / R12|≤3.5, 0.1≤T12 / TTL≤0.16, 0.0035≤T23 / TTL≤0.033, wherein F1 is an effective focal length of the first lens, R1 is a radius of curvature of an object side surface of the first lens, R2 is a radius of curvature of an image side surface of the first lens, F is a total effective focal length of the optical lens, F2 is an effective focal length of the second lens, TTL is a distance from a center of the object side surface of the first lens to an imaging surface of the optical lens on an optical axis, BFL is a distance from a center of the image side surface of the sixth lens to the imaging surface on the optical axis, FOV is a maximum field of view angle of the optical lens, D is a maximum light passing aperture of the object side surface of the first lens corresponding to the maximum field of view angle of the optical lens, H is an image height corresponding to the maximum field of view angle of the optical lens, F3 is an effective focal length of the third lens, F4 is an effective focal length of the fourth lens, R2 is a radius of curvature of an image side surface of the first lens, R11 is a radius of curvature of an object side surface of the sixth lens, R12 is a radius of curvature of an image side surface of the sixth lens, F34 is a combined focal length of the third lens and the fourth lens, T12 is an interval distance from a center of the image side surface of the first lens to a center of the object side surface of the second lens on the optical axis, and T23 is an interval distance from a center of the image side surface of the second lens to a center of the object side surface of the third lens on the optical axis.

[0031] Another aspect of the present application provides an electronic device. The electronic device includes the optical lens provided by the present application and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

[0032] The present application adopts six lenses, and by optimizing the shape, focal length, etc. of each lens, the optical lens has at least one of the following beneficial effects: high resolution, miniaturization, low cost, good temperature performance, etc. BRIEF DESCRIPTION OF DRAWINGS

[0033] Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments, when read in conjunction with the accompanying drawings. In the drawings:

[0034] Figure 1 To show a structure schematic diagram of the optical lens according to Embodiment 1 of the present application;

[0035] Figure 2 FIG. 1 shows a schematic diagram of an optical lens according to an embodiment of the present application;

[0036] Figure 3 FIG. 2 shows a schematic diagram of an optical lens according to an embodiment of the present application;

[0037] Figure 4 FIG. 3 shows a schematic diagram of an optical lens according to an embodiment of the present application;

[0038] Figure 5 FIG. 4 shows a schematic diagram of an optical lens according to an embodiment of the present application;

[0039] Figure 6 FIG. 5 shows a schematic diagram of an optical lens according to an embodiment of the present application;

[0040] Figure 7 FIG. 6 shows a schematic diagram of an optical lens according to an embodiment of the present application;

[0041] Figure 8 FIG. 7 shows a schematic diagram of an optical lens according to an embodiment of the present application;

[0042] Figure 9 FIG. 8 shows a schematic diagram of an optical lens according to an embodiment of the present application;

[0043] Figure 10 FIG. 9 shows a schematic diagram of an optical lens according to an embodiment of the present application;

[0044] Figure 11 FIG. 10 shows a schematic diagram of an optical lens according to an embodiment of the present application; and

[0045] Figure 12 FIG. 11 shows a schematic diagram of an optical lens according to an embodiment of the present application. DETAILED DESCRIPTION

[0046] For a better understanding of the present application, various aspects of the present application will be described in greater detail below with reference to the accompanying drawings. It is to be understood that the detailed description is merely descriptive in nature and is in no way intended to limit the scope of the present application. Throughout the description, like reference numerals refer to like elements. The expression “and / or” includes any and all combinations of one or more of the associated listed items.

[0047] It should be noted that in the present specification, the expressions first, second, third, etc. are merely used to distinguish one feature from another feature, and do not represent any limitation on the features. Therefore, the first lens discussed below can also be referred to as the second lens or the third lens without departing from the teachings of the present application.

[0048] In the drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for ease of explanation. Specifically, the shape of the spherical or aspherical surface 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 drawings are merely examples and are not drawn to scale.

[0049] In this document, the paraxial region refers to a region near the optical axis. If a lens surface is convex and the position of the convex surface is not specified, it means that the lens surface is convex at least in the paraxial region. If a lens surface is concave and the position of the concave surface is not specified, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object is referred to as the object side surface of the lens, and the surface of each lens closest to the image plane is referred to as the image side surface of the lens.

[0050] It should also be understood that the words "comprise", "comprising", "include", "including", and / or "has", "having", 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. In addition, when terms such as "at least one of", "one or more of", or "at least an of" precede a list of one or more members, it means at least one member of the list is present at a minimum, but does not exclude the presence of more than one member of the list, or the presence of additional members not explicitly listed. Furthermore, when describing embodiments of the present application, the use of "can" means "one or more embodiments of the present application". Also, the word "exemplary" is used herein to mean "serving as an example, instance, or illustration". Any implementation described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations.

[0051] 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 overly idealized or formal sense unless expressly so defined herein.

[0052] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0053] The features, principles, and other aspects of the present application are described in detail below.

[0054] The optical lens according to the exemplary embodiments of the present application can include six lenses with 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.

[0055] The optical lens according to the exemplary embodiments of the present application can further comprise a photosensitive element disposed on the imaging surface. Optionally, the photosensitive element disposed on the imaging surface can be a charge-coupled device (CCD) or a complementary metal-oxide-semiconductor device (CMOS).

[0056] In the exemplary embodiments, the first lens can have a negative focal power, and the object side surface thereof can be convex, and the image side surface thereof can be concave. The first lens is arranged in a meniscus shape towards the object side, so that the light entering the optical system smoothly enters the rear of the system, improving the resolving power of the optical lens, and being able to collect as much as possible the light of a large field of view to enter the rear of the system, thereby effectively increasing the light throughput. In addition, the object side surface of the first lens is arranged as a convex surface, which is beneficial for the sliding of water droplets in actual use environment (such as rainy and snowy weather), and can effectively reduce the influence of, for example, harsh environment on imaging. The aspheric lens has a better curvature radius characteristic, and in use, at least one of the object side surface and the image side surface of the first lens can be arranged as an aspheric surface, to further improve the resolving quality of the lens.

[0057] In the exemplary embodiments, the second lens can have a positive focal power, and the object side surface thereof can be convex, and the image side surface thereof can be convex. The second lens can effectively converge the light entering the optical system, reduce the aperture of the optical lens, and realize the miniaturization of the optical lens.

[0058] As known by those skilled in the art, cemented lenses can be used to minimize or eliminate chromatic aberration. The use of cemented lenses in optical lenses can improve the image quality, reduce the reflection loss of light energy, and thus improve the clarity of lens imaging. In addition, the use of cemented lenses can also simplify the assembly procedure in the lens manufacturing process.

[0059] In the example embodiment, the third lens and the fourth lens can be combined into a cemented lens by cementing the image-side surface of the third lens with the object-side surface of the fourth lens. By introducing the cemented lens, the light rays passing through the third lens can be smoothly transitioned to the rear of the optical system, reducing the overall length of the optical lens. The use of the cemented lens in the optical lens helps to reduce the air gap between the lenses, making the entire system more compact; at the same time, the assembly components between the third lens and the fourth lens are reduced, which can reduce the processing procedures and reduce the cost of the optical lens; in addition, it can also reduce the tolerance sensitivity problems such as tilt and eccentricity of the lens unit during assembly; moreover, it can also reduce the light loss caused by reflection between the lenses and improve the illumination; secondly, it can also eliminate chromatic aberration and residual chromatic aberration to balance the chromatic aberration of the system. In the cemented lens, the third lens close to the object side can have positive refractive power, and the fourth lens close to the image side can have negative refractive power, which is beneficial to the smooth transition of the incident light to the rear lens, so that various aberrations in the optical system can be fully corrected, while maintaining the compact structure of the optical lens, improving the resolution of the optical lens, and optimizing the optical performance such as Chief-Ray-Angle (CRA) and distortion.

[0060] By using the cemented part, it is beneficial to share the overall chromatic aberration correction of the system, so that the aberration can be effectively corrected to improve the resolution. Moreover, after using the cemented part, the optical system as a whole can be compact, thereby better meeting the miniaturization requirement.

[0061] In the example embodiment, the fifth lens can have positive refractive power or negative refractive power. The fifth lens can have a concave-convex surface type, a convex-convex surface type, a convex-concave surface type, and a double-concave surface type. Reasonable allocation of the light angle and the surface type of the fifth lens can make the incident light transition smoothly to the sixth lens, which is beneficial to improve the resolving power of the optical lens.

[0062] In the example embodiment, the sixth lens can have positive refractive power or negative refractive power. The fifth lens can have a concave-convex surface type, a convex-convex surface type, a convex-concave surface type, and a double-concave surface type. Reasonable allocation of the light angle and the surface type of the sixth lens can make the incident light transition smoothly to the imaging surface, which is beneficial to improve the resolving power of the optical lens. In use, at least one of the object-side surface and the image-side surface of the sixth lens can be arranged as a non-spherical mirror surface to further improve the resolution quality of the lens.

[0063] In the example embodiment, the distance TTL on the optical axis from the center of the object-side surface of the first lens to the imaging surface of the optical lens and the total effective focal length F of the optical lens can satisfy: TTL / F≤3.5. For example, 1≤TTL / F≤2. Reasonable control of the mutual relationship between the total optical length of the optical lens and the total effective focal length of the optical lens can achieve miniaturization of the optical lens.

[0064] In the example embodiments, a distance TTL on the optical axis from the center of the object side surface of the first lens to the imaging surface of the optical lens and a distance BFL on the optical axis from the center of the image side surface of the sixth lens to the imaging surface can satisfy BFL / TTL≥0.07. For example, 0.1≤BFL / TTL≤0.2. By controlling the ratio of the optical back focal length of the optical lens to the total optical length of the optical lens within a reasonable numerical range, the length of the back focal length of the optical lens can be ensured on the basis of miniaturization of the optical system, which is conducive to system assembly; meanwhile, it is conducive to obtaining an optical lens with compact structure, reducing the sensitivity of the lens to the modulation transfer function (MTF), improving the production yield of the optical lens, and reducing the production cost of the optical lens.

[0065] In the example embodiments, a maximum field of view FOV of the optical lens, a maximum light passing aperture D of the object side surface of the first lens corresponding to the maximum field of view of the optical lens, and an image height H corresponding to the maximum field of view of the optical lens can satisfy D / H / FOV≤0.1. For example, 0.01≤D / H / FOV≤0.1. Reasonable control of the mutual relationship among the maximum field of view of the optical lens, the maximum light passing aperture of the object side surface of the first lens corresponding to the maximum field of view of the optical lens, and the image height corresponding to the maximum field of view of the optical lens can ensure a small aperture at the front end of the optical lens, and realize miniaturization of the optical lens.

[0066] In the example embodiments, the effective focal length F3 of the third lens and the effective focal length F4 of the fourth lens can satisfy 0.5≤|F3 / F4|≤2.3. For example, 1≤|F3 / F4|≤2. By controlling the ratio of the effective focal lengths of the third lens and the fourth lens within a reasonable numerical range, the focal lengths of the two lenses in the cemented lens can be similar, which is helpful for smooth transition of light and correction of chromatic aberration of the system.

[0067] In the example embodiments, the effective focal length F1 of the first lens and the total effective focal length F of the optical lens can satisfy |F1 / F|≥2.5. For example, 2.8≤|F1 / F|≤5. By controlling the ratio of the effective focal length of the first lens to the total effective focal length of the optical lens within a reasonable numerical range, more light can enter the optical lens smoothly, so as to increase the illumination of the optical lens.

[0068] In the example embodiments, the total effective focal length F of the optical lens and the radius of curvature R1 of the object side surface of the first lens can satisfy 0.5≤|F / R1|≤2.5. For example, 1≤|F / R1|≤2.5. Reasonable control of the mutual relationship between the total effective focal length of the optical lens and the radius of curvature of the object side surface of the first lens can effectively avoid the problem of too small curvature of the object side surface of the first lens, prevent aberration when light is incident, and facilitate processing of the first lens.

[0069] In exemplary embodiments, the effective focal length F1 of the first lens and the effective focal length F2 of the second lens can satisfy: |F1 / F2|≥2.5. For example, 3≤|F1 / F2|≤6. Reasonably controlling the mutual relationship between the effective focal lengths of the first lens and the second lens can make the adjacent first lens and second lens have a larger focal length, which is conducive to the concentration of light entering the optical lens and improves the imaging quality of the optical lens.

[0070] In exemplary embodiments, the curvature radius R4 of the object side surface of the second lens and the curvature radius R5 of the image side surface of the second lens can satisfy: |(R4-R5) / (R4+R5)|≥0.5. For example, 3≤|(R4-R5) / (R4+R5)|≤7.6. Reasonably controlling the mutual relationship between the curvature radii of the object side surface and the image side surface of the second lens can correct the aberration of the optical lens, which is conducive to ensuring the smooth transition of light passing through the second lens, thereby reducing the tolerance sensitivity of the optical lens.

[0071] In exemplary embodiments, the combined focal length F34 of the third lens and the fourth lens and the total effective focal length F of the optical lens can satisfy: |F34 / F|≥0.5. For example, 2≤|F34 / F|≤75. By controlling the ratio of the combined focal length of the third lens and the fourth lens to the total effective focal length of the optical lens within a reasonable numerical range, it is helpful to realize thermal compensation to improve the temperature performance of the optical lens.

[0072] In exemplary embodiments, the curvature radius R1 of the object side surface of the first lens and the curvature radius R2 of the image side surface of the first lens can satisfy: |R1 / R2|≤3.6. For example, 1.4≤|R1 / R2|≤1.6. By controlling the ratio of the curvature radii of the object side surface and the image side surface of the first lens within a reasonable numerical range, the curvature radii of the object side surface and the image side surface of the first lens can be similar, so that the light enters the optical lens smoothly, and the resolving power of the optical lens is improved.

[0073] In exemplary embodiments, the curvature radius R11 of the object side surface of the sixth lens and the curvature radius R12 of the image side surface of the sixth lens can satisfy: |R11 / R12|≤3.6. For example, 0.1≤|R11 / R12|≤3.6. By controlling the ratio of the curvature radii of the object side surface and the image side surface of the sixth lens within a reasonable numerical range, the curvature radii of the object side surface and the image side surface of the sixth lens can be similar, so that the light enters the imaging surface smoothly, and the resolving power of the optical lens is improved while the chief ray angle CRA of the optical lens is optimized.

[0074] In an exemplary embodiment, the total optical length (TTL) of the optical lens, the maximum field of view (FOV) of the optical lens, and the image height (H) corresponding to the maximum field of view of the optical lens may satisfy the following relationship: TTL / H / FOV ≤ 0.15. For example, 0.05 ≤ TTL / H / FOV ≤ 0.1. Properly controlling the relationship between the total optical length, the maximum field of view (FOV) of the optical lens, and the image height corresponding to the maximum field of view of the optical lens facilitates miniaturization of the optical system, effectively reducing the size of the optical lens while maintaining the same imaging surface and image height.

[0075] In an exemplary embodiment, the distance T12 between the center of the image-side surface of the first lens and the center of the object-side surface of the second lens on the optical axis and the distance TTL between the center of the object-side surface of the first lens and the imaging plane of the optical lens on the optical axis may satisfy the following conditions: T12 / TTL ≥ 0.08. For example, 0.08 ≤ T12 / TTL ≤ 0.2. By controlling the ratio of the distance between the center of the image-side surface of the first lens and the center of the object-side surface of the second lens on the optical axis to the distance between the center of the object-side surface of the first lens and the imaging plane of the optical lens on the optical axis within a reasonable range, the spacing between the first and second lenses can be increased, effectively reducing the chief ray angle (CRA) of the optical lens.

[0076] In an exemplary embodiment, the distance T23 between the center of the image-side surface of the second lens and the center of the object-side surface of the third lens on the optical axis and the distance TTL between the center of the object-side surface of the first lens and the imaging plane of the optical lens on the optical axis may satisfy the following conditions: T23 / TTL ≤ 0.05. For example, 0.001 ≤ T23 / TTL ≤ 0.04. By controlling the ratio of the distance between the center of the image-side surface of the second lens and the center of the object-side surface of the third lens on the optical axis to the distance between the center of the object-side surface of the first lens and the imaging plane of the optical lens on the optical axis within a reasonable range, the spacing between the second and third lenses can be reduced, facilitating miniaturization of the optical lens.

[0077] In an exemplary embodiment, the effective focal length F2 of the second lens and the total effective focal length F of the optical lens may satisfy the following relationship: |F2 / F| ≤ 2. For example, 0.7 ≤ |F2 / F| ≤ 0.9. Properly controlling the relationship between the effective focal length of the second lens and the total effective focal length of the optical lens helps balance various aberrations of the optical lens.

[0078] In the exemplary embodiments, the center thickness dn of the nth lens having the largest center thickness among the first to sixth lenses and the center thickness dm of the mth lens having the smallest center thickness among the first to sixth lenses satisfy: dn / dm≥3, where n and m are selected from 1, 2, 3, 4, 5 and 6. For example, 3≤dn / dm≤9.5. Reasonably controlling the relationship between the lens having the largest center thickness and the lens having the smallest center thickness in the optical lens is conducive to optimizing the parameters of each lens in the optical lens, making the thickness uniform and the effect stable, and further conducive to controlling the change of the light entering the optical lens at high and low temperatures, so that the optical lens has better temperature performance.

[0079] In the exemplary embodiments, a diaphragm can be arranged between, for example, the first lens and the second lens to further improve the imaging quality of the optical lens. Arranging the diaphragm between the first lens and the second lens is conducive to increasing the diaphragm aperture to further improve the imaging quality of the lens. The diaphragm can effectively converge the light entering the optical system and reduce the aperture of the lens. It should be understood that the diaphragm position is not limited to the above position, but can also be arranged at any other position as needed.

[0080] Optionally, the above optical lens can further include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface.

[0081] In the exemplary embodiments, at least one of the object side and the image side of the first lens and the sixth lens can be aspherical. The aspherical lens is characterized by continuously changing curvature from the center of the lens to the periphery. Unlike the spherical lens having constant curvature from the center of the lens to the periphery, the aspherical lens has better curvature radius characteristics, and has the advantages of improving distortion aberration and improving astigmatism aberration. After using the aspherical lens, the aberration that occurs during imaging can be eliminated as much as possible, thereby improving the imaging quality of the lens. For example, at least one of the object side and the image side of the first lens and the sixth lens can use an aspherical lens to further improve the resolution quality. However, in order to improve the imaging quality, the number of aspherical lenses of the optical lens according to the present application can be increased. For example, in the case of focusing on the resolution quality and reliability, the first to sixth lenses can all use aspherical lenses, such as glass aspherical lenses.

[0082] The optical lens according to the above-mentioned embodiments of the present application achieves high resolving power by reasonable setting of the shapes and focal lengths of the lenses, and meanwhile, the optical system also meets the requirements of small size, low sensitivity and high production yield. The optical lens has a small chief ray angle (CRA), which can effectively avoid the light hitting the lens barrel at the rear end to generate stray light, and can also well match the vehicle-mounted chip to avoid color cast and dark corner phenomena. Meanwhile, the optical lens also has good temperature performance, which is beneficial to the imaging effect changing little under high and low temperature environments, and the image quality is stable, which is beneficial to the optical lens being used in most environments.

[0083] The optical lens according to the above-mentioned embodiments of the present application achieves high resolving power by reasonable setting of the shapes and focal lengths of the lenses, and meanwhile, the optical system also meets the requirements of small size, low sensitivity and high production yield. The optical lens has a small chief ray angle (CRA), which can effectively avoid the light hitting the lens barrel at the rear end to generate stray light, and can also well match the vehicle-mounted chip to avoid color cast and dark corner phenomena. Meanwhile, the optical lens also has good temperature performance, which is beneficial to the imaging effect changing little under high and low temperature environments, and the image quality is stable, which is beneficial to the optical lens being used in most environments.

[0084] In the example embodiments, the first to sixth lenses in the optical lens can all be made of glass. The optical lens made of glass can suppress the shift of the back focus of the optical lens with temperature change, to improve the system stability. Meanwhile, the use of glass material can avoid the imaging blur of the lens caused by the high and low temperature change in the use environment, which affects the normal use of the lens. Specifically, when the resolving power and reliability are focused on, the first to sixth lenses can all be glass aspherical lenses. Of course, in the application occasions with low temperature stability requirement, the first to sixth lenses in the optical lens can also all be made of plastic. The optical lens made of plastic can effectively reduce the manufacturing cost.

[0085] However, those skilled in the art should understand that the number of lenses constituting the lens can be changed without departing from the technical solutions claimed by the present application, to obtain the various results and advantages described in the specification. For example, although six lenses are described as an example in the embodiments, the optical lens is not limited to including six lenses. If necessary, the optical lens can also include other numbers of lenses.

[0086] The specific embodiments of the optical lens applicable to the above-mentioned embodiments are further described below with reference to the accompanying drawings.

[0087] Example 1

[0088] The following refers to Figure 1 The optical lens according to Embodiment 1 of the present application is described. Figure 1 is a structural schematic view showing the optical lens according to Embodiment 1 of the present application.

[0089] As Figure 1As shown, the optical lens comprises, along the optical axis from the object side to the image side, 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.

[0090] The first lens L1 is a meniscus lens with negative focal power, the object side S1 is a convex surface, the image side S2 is a concave surface, and both the object side S1 and the image side S2 of the first lens L1 are aspherical surfaces.

[0091] The second lens L2 is a double convex lens with positive focal power, the object side S4 is a convex surface, the image side S5 is a convex surface, and both the object side S4 and the image side S5 of the second lens L2 are spherical surfaces.

[0092] The third lens L3 is a double convex lens with positive focal power, the object side S6 is a convex surface, the image side S7 is a convex surface, and both the object side S6 and the image side S7 of the third lens L3 are spherical surfaces.

[0093] The fourth lens L4 is a double concave lens with negative focal power, the object side S7 is a concave surface, the image side S8 is a concave surface, and both the object side S7 and the image side S8 of the fourth lens L4 are spherical surfaces.

[0094] The fifth lens L5 is a meniscus lens with positive focal power, the object side S9 is a concave surface, the image side S10 is a convex surface, and both the object side S9 and the image side S10 of the fifth lens L5 are spherical surfaces.

[0095] The sixth lens L6 is a double concave lens with negative focal power, the object side S11 is a concave surface, the image side S12 is a concave surface, and both the object side S11 and the image side S12 of the sixth lens L6 are aspherical surfaces.

[0096] In this embodiment, the third lens L3 and the fourth lens L4 can be glued to form a glued lens.

[0097] Alternatively, the optical lens can further comprise an auxiliary lens L7 with an object side S13 and an image side S14, which has no focal power. The auxiliary lens L7 can be a filter or a protective glass. The filter can be used to correct color deviation. The protective glass can be used to protect the image sensor chip located at the imaging surface IMA. Light from the object sequentially passes through the surfaces S1 to S14 and is finally imaged on the imaging surface IMA.

[0098] In the optical lens of this embodiment, the optical lens can further comprise a stop STO, which can be arranged between the first lens L1 and the second lens L2 to further improve the imaging quality.

[0099] Table 1 shows the radius of curvature R, the thickness d / distance T (it should be understood that the thickness d / distance T in the row of S1 is the central thickness d1 of the first lens L1, the thickness d / distance T in the row of S2 is the interval distance T12 between the first lens L1 and the second lens L2, and so on), the refractive index Nd, and the Abbe number Vd of each lens of the optical lens of Example 1.

[0100]

[0101] Table 1

[0102] In this embodiment, the maximum field of view FOV of the optical lens is 34.4°. Table 2 below shows the total optical length TTL (i.e., the distance on the optical axis from the center of the object side S1 of the first lens L1 to the imaging surface IMA) of the optical lens of Example 1, the total effective focal length F of the optical lens, the image height H corresponding to the maximum field of view angle of the optical lens, the maximum clear aperture D of the object side S1 of the first lens corresponding to the maximum field of view angle of the optical lens, the optical back focal length BFL (i.e., the distance on the optical axis from the center of the image side S12 of the sixth lens to the imaging surface IMA) of the optical lens, the effective focal length F1 of the first lens, the effective focal length F2 of the second lens, the effective focal length F3 of the third lens, the effective focal length F4 of the fourth lens, the effective focal length F5 of the fifth lens, the effective focal length F6 of the sixth lens, the combined focal length F34 of the third lens and the fourth lens, the central thickness dn of the nth lens having the largest central thickness among the first to sixth lenses, and the central thickness dm of the mth lens having the smallest central thickness among the first to sixth lenses (n and m are selected from 1, 2, 3, 4, 5, and 6), the radius of curvature R1 of the object side of the first lens, the radius of curvature R2 of the image side of the first lens, the radius of curvature R4 of the object side of the second lens, the radius of curvature R5 of the image side of the second lens, the radius of curvature R11 of the object side of the sixth lens, the radius of curvature R12 of the image side of the sixth lens, the interval distance T12 on the optical axis from the center of the image side of the first lens to the center of the object side of the second lens, and the interval distance T23 on the optical axis from the center of the image side of the second lens to the center of the object side of the third lens, wherein the units of TTL, BFL, F, D, H, F1, F2, F3, F34, F4, F5, F6, dn, dm, R1, R2, R4, R5, R11, R12, T12, and T23 are millimeters (mm).

[0103] TTL 28.2534 F2 12.7808 BFL 2.9370 F3 9.8442 F 15.8517 F34 -69.4149 D 11.1783 F4 -6.9068 H 9.1740 F5 22.8126 F1 -51.3632 F6 -19.1804 dn 5.3000 dm 0.8000 R1 7.6385 R2 5.3300 R4 18.1748 R5 -12.4359 R11 -18.0000 R12 55.0000 T12 3.9313 T23 0.1000

[0104] Table 2

[0105] In Example 1, the object side and the image side of the first lens L1 and the sixth lens L6 can be aspherical surfaces, and the surface type x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:

[0106]

[0107] wherein x is the sag of the aspherical surface at a position along the optical axis at a height h from the vertex of the aspherical surface; c is the paraxial curvature of the aspherical surface, c = 1 / R (i.e., the paraxial curvature c is the inverse of the curvature radius R in Table 1 above); k is the conic coefficient; and Ai is the correction coefficient of the aspherical surface at the i-th order. Table 3 below shows the conic coefficient k and the higher order coefficients A4, A6, A8, A10, A12, A14 and A16 that can be used for the aspherical surfaces S1, S2, S11 and S12 in Example 1.

[0108] face number k A4 A6 A8 A10 A12 A14 A16 S1 0.1267 -5.2192E-04 -1.2437E-05 2.0968E-07 -1.8583E-08 6.9612E-10 -1.6197E-11 1.8600E-13 S2 -0.1808 -7.5286E-04 -2.3753E-05 1.0831E-07 -3.2215E-08 1.9885E-09 -9.4121E-11 1.9850E-12 S11 10.7000 -2.7884E-04 -4.6736E-05 1.3303E-05 -1.6619E-06 1.1519E-07 -4.0721E-09 5.8621E-11 S12 0.9000 -1.1775E-03 3.1176E-05 -5.4518E-06 5.9148E-07 -3.5918E-08 1.1381E-09 -1.4599E-11

[0109] Table 3

[0110] Example 2

[0111] The optical lens according to Example 2 of the present application is described below with reference to Figure 2 The optical lens according to Example 2 of the present application is described below with reference to Figure 2 is a schematic diagram showing the structure of the optical lens according to Example 2 of the present application.

[0112] As shown in Figure 2 the optical lens comprises, in order from the object side to the image side along the 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.

[0113] The first lens L1 is a meniscus lens with negative refractive power, the object side surface S1 is convex, the image side surface S2 is concave, and both the object side surface S1 and the image side surface S2 of the first lens L1 are aspherical surfaces.

[0114] The second lens L2 is a biconvex lens with positive refractive power, the object side surface S4 is convex, the image side surface S5 is convex, and both the object side surface S4 and the image side surface S5 of the second lens L2 are spherical surfaces.

[0115] The third lens L3 is a biconvex lens with positive refractive power, the object side surface S6 is convex, the image side surface S7 is convex, and both the object side surface S6 and the image side surface S7 of the third lens L3 are spherical surfaces.

[0116] The fourth lens L4 is a biconcave lens with negative refractive power, the object side surface S7 is concave, the image side surface S8 is concave, and both the object side surface S7 and the image side surface S8 of the fourth lens L4 are spherical surfaces.

[0117] The fifth lens L5 is a biconvex lens with positive refractive power, the object side surface S9 is convex, the image side surface S10 is convex, and both the object side surface S9 and the image side surface S10 of the fifth lens L5 are spherical surfaces.

[0118] The sixth lens L6 is a meniscus lens with negative refractive power, the object side surface S11 is a concave surface, the image side surface S12 is a convex surface, and both the object side surface S11 and the image side surface S12 of the sixth lens L6 are aspherical surfaces.

[0119] In the present embodiment, the third lens L3 and the fourth lens L4 can be cemented to form a cemented lens.

[0120] Optionally, the optical lens can further include an auxiliary lens L7 with an object side surface S13 and an image side surface S14, the auxiliary lens L7 can be a filter or a protection glass. The filter can be used to correct color deviation. The protection glass can be used to protect the image sensor chip located at the imaging plane IMA. Light from an object sequentially passes through the surfaces S1 to S14 and is finally imaged on the imaging plane IMA.

[0121] In the optical lens of the present embodiment, the stop STO can be arranged between the first lens L1 and the second lens L2 to further improve the imaging quality.

[0122] Table 4 shows the radius of curvature R, the thickness d / distance T, the refractive index Nd and the dispersion coefficient Vd of each lens of the optical lens of embodiment 2.

[0123]

[0124]

[0125] Table 4

[0126] In this embodiment, the maximum field of view FOV of the optical lens is 34.4°. Table 5 below shows the total optical length TTL of the optical lens of Example 2 (i.e., the distance on the optical axis from the center of the object-side surface S1 of the first lens L1 to the imaging surface IMA), the total effective focal length F of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, the maximum clear aperture D of the object-side surface S1 of the first lens corresponding to the maximum field of view of the optical lens, the optical back focus BFL of the optical lens (i.e., the distance on the optical axis from the center of the image-side surface S12 of the sixth lens to the imaging surface IMA), the effective focal length F1 of the first lens, the effective focal length F2 of the second lens, the effective focal length F3 of the third lens, the effective focal length F4 of the fourth lens, the effective focal length F5 of the fifth lens, the effective focal length F6 of the sixth lens, the combined focal length F34 of the third lens and the fourth lens, the center thickness dn of the nth lens having the largest center thickness among the first to sixth lenses, and the distance between the first to sixth lenses. The center thickness dm of the mth lens with the smallest center thickness among the lenses (n and m are selected from 1, 2, 3, 4, 5 and 6), the curvature radius R1 of the object side surface of the first lens, the curvature radius R2 of the image side surface of the first lens, the curvature radius R4 of the object side surface of the second lens, the curvature radius R5 of the image side surface of the second lens, the curvature radius R11 of the object side surface of the sixth lens, the curvature radius R12 of the image side surface of the sixth lens, the spacing distance T12 from the center of the image side surface of the first lens to the center of the object side surface of the second lens on the optical axis, and the spacing distance T23 from the center of the image side surface of the second lens to the center of the object side surface of the third lens on the optical axis, wherein the units of TTL, BFL, F, D, H, F1, F2, F3, F34, F4, F5, F6, dn, dm, R1, R2, R4, R5, R11, R12, T12 and T23 are all millimeters (mm).

[0127] TTL 27.4694 F2 12.4129 BFL 3.5316 F3 10.0571 F 15.3021 F34 -37.5214 D 10.4862 F4 -6.2825 H 9.4080 F5 20.9790 F1 -48.5654 F6 -24.3765 dn 5.3392 dm 1.2433 R1 10.2190 R2 6.8019 R4 16.5724 R5 -12.6370 R11 -11.3700 R12 -93.0000 T12 3.3879 T23 0.3212

[0128] Table 5

[0129] In Example 2, the object-side and image-side surfaces of the first lens L1 and the sixth lens L6 may be aspherical surfaces. The surface shape x of each aspherical lens may be defined using, but not limited to, formula (1) in Example 1. Table 6 below lists the conic coefficient k and the higher-order coefficients A4, A6, A8, A10, A12, A14, and A16 of the aspherical mirror surfaces S1, S2, S11, and S12 that can be used in Example 2.

[0130] face number k A4 A6 A8 A10 A12 A14 A16 S1 0.5354 -4.3043E-04 -7.8687E-06 2.4293E-07 -1.8111E-08 7.2263E-10 -1.5735E-11 1.4448E-13 S2 0.0993 -4.0613E-04 -1.2234E-05 3.5494E-07 -3.6313E-08 2.1319E-09 -7.4379E-11 1.0856E-12 S11 5.5685 -6.2646E-04 -2.7157E-05 1.0368E-05 -1.4688E-06 1.1383E-07 -5.0001E-09 9.4547E-11 S12 -65.0000 -1.4844E-03 2.1619E-07 -4.0365E-06 4.8698E-07 -3.6368E-08 1.3069E-09 -1.8903E-11

[0131] Table 6

[0132] Example 3

[0133] The following reference Figure 3An optical lens according to Embodiment 3 of the present application is described. Figure 3 is a structural schematic diagram showing an optical lens according to Embodiment 3 of the present application.

[0134] As shown in Figure 3 , the optical lens sequentially comprises, along the optical axis from the object side to the image side, 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.

[0135] The first lens L1 is a meniscus lens with negative focal power, the object side surface S1 is a convex surface, the image side surface S2 is a concave surface, and both the object side surface S1 and the image side surface S2 of the first lens L1 are aspherical surfaces.

[0136] The second lens L2 is a double convex lens with positive focal power, the object side surface S4 is a convex surface, the image side surface S5 is a convex surface, and both the object side surface S4 and the image side surface S5 of the second lens L2 are spherical surfaces.

[0137] The third lens L3 is a meniscus lens with positive focal power, the object side surface S6 is a convex surface, the image side surface S7 is a concave surface, and both the object side surface S6 and the image side surface S7 of the third lens L3 are spherical surfaces.

[0138] The fourth lens L4 is a meniscus lens with negative focal power, the object side surface S7 is a convex surface, the image side surface S8 is a concave surface, and both the object side surface S7 and the image side surface S8 of the fourth lens L4 are spherical surfaces.

[0139] The fifth lens L5 is a meniscus lens with positive focal power, the object side surface S9 is a convex surface, the image side surface S10 is a concave surface, and both the object side surface S9 and the image side surface S10 of the fifth lens L5 are spherical surfaces.

[0140] The sixth lens L6 is a double concave lens with negative focal power, the object side surface S11 is a concave surface, the image side surface S12 is a concave surface, and both the object side surface S11 and the image side surface S12 of the sixth lens L6 are aspherical surfaces.

[0141] In this embodiment, the third lens L3 and the fourth lens L4 can be cemented to form a cemented lens.

[0142] Alternatively, the optical lens can further comprise an auxiliary lens L7 with an object side surface S13 and an image side surface S14, which has no focal power. The auxiliary lens L7 can be a filter or a protective glass. The filter can be used to correct color deviation. The protective glass can be used to protect the image sensor chip located at the imaging surface IMA. Light from the object sequentially passes through the surfaces S1 to S14 and is finally imaged on the imaging surface IMA.

[0143] In the optical lens of this embodiment, a stop STO can be arranged between the first lens L1 and the second lens L2 to further improve the imaging quality.

[0144] Table 7 shows the radius of curvature R, the thickness d / distance T, the refractive index Nd, and the Abbe number Vd of each lens of the optical lens of Example 3.

[0145]

[0146]

[0147] Table 7

[0148] In this embodiment, the maximum field of view FOV of the optical lens is 34.4°. Table 8 below shows the total track length TTL (i.e., the distance on the optical axis from the center of the object side S1 of the first lens L1 to the imaging plane IMA) of the optical lens of Example 3, the total effective focal length F of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, the maximum clear aperture D of the object side S1 of the first lens corresponding to the maximum field of view of the optical lens, the optical back focal length BFL (i.e., the distance on the optical axis from the center of the image side S12 of the sixth lens to the imaging plane IMA) of the optical lens, the effective focal length F1 of the first lens, the effective focal length F2 of the second lens, the effective focal length F3 of the third lens, the effective focal length F4 of the fourth lens, the effective focal length F5 of the fifth lens, the effective focal length F6 of the sixth lens, the combined focal length F34 of the third and fourth lenses, the central thickness dn of the nth lens having the largest central thickness among the first to sixth lenses, and the central thickness dm of the mth lens having the smallest central thickness among the first to sixth lenses (n and m are selected from 1, 2, 3, 4, 5, and 6), the radius of curvature R1 of the object side of the first lens, the radius of curvature R2 of the image side of the first lens, the radius of curvature R4 of the object side of the second lens, the radius of curvature R5 of the image side of the second lens, the radius of curvature R11 of the object side of the sixth lens, the radius of curvature R12 of the image side of the sixth lens, the interval distance T12 on the optical axis from the center of the image side of the first lens to the center of the object side of the second lens, and the interval distance T23 on the optical axis from the center of the image side of the second lens to the center of the object side of the third lens, wherein the units of TTL, BFL, F, D, H, F1, F2, F3, F34, F4, F5, F6, dn, dm, R1, R2, R4, R5, R11, R12, T12, and T23 are millimeters (mm).

[0149] TTL 26.5169 F2 12.3985 BFL 2.9584 F3 12.0271 F 15.3449 F34 -98.3804 D 10.4020 F4 -8.9332 H 9.1700 F5 90.2527 F1 -55.0957 F6 -30.5469 dn 5.4200 dm 0.6500 R1 10.1192 R2 6.8347 R4 16.4179 R5 -12.5799 R11 -94.0000 R12 27.6311 T12 2.9301 T23 0.1000

[0150] Table 8

[0151] In Embodiment 3, the object side surface and the image side surface of the first lens L1 and the sixth lens L6 can be aspherical surfaces, and the surface type x of each aspherical surface can be defined by, but not limited to, the formula (1) in Embodiment 1. The following Table 9 gives the conic constant k and the high order term coefficients A4, A6, A8, A10, A12, A14 and A16 which can be used in the aspherical surfaces S1, S2, S11 and S12 in Embodiment 3.

[0152] face number k A4 A6 A8 A10 A12 A14 A16 S1 0.4720 -3.9642E-04 -6.8454E-06 1.6388E-07 -1.6380E-08 7.7468E-10 -1.9344E-11 1.9608E-13 S2 0.0091 -4.5251E-04 -1.0764E-05 5.3684E-08 -1.6210E-08 1.7853E-09 -9.4409E-11 1.7855E-12 S11 92.4587 -7.0043E-04 -5.2366E-05 1.1117E-05 -1.5560E-06 1.1379E-07 -4.4229E-09 7.0884E-11 S12 19.0000 -7.6623E-04 -1.0038E-05 -3.0697E-06 4.8594E-07 -3.6690E-08 1.3087E-09 -1.7850E-11

[0153] Table 9

[0154] Example 4

[0155] The optical lens according to Embodiment 4 of the present application is described below with reference to Figure 4 The optical lens according to Embodiment 4 of the present application is described below with reference to Figure 4 is a schematic diagram showing the structure of the optical lens according to Embodiment 4 of the present application.

[0156] As shown in Figure 4 the optical lens comprises, in order from the object side to the image side along the 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.

[0157] The first lens L1 is a meniscus lens with negative refractive power, the object side surface S1 is a convex surface, the image side surface S2 is a concave surface, and both the object side surface S1 and the image side surface S2 of the first lens L1 are aspherical surfaces.

[0158] The second lens L2 is a biconvex lens with positive refractive power, the object side surface S4 is a convex surface, the image side surface S5 is a convex surface, and both the object side surface S4 and the image side surface S5 of the second lens L2 are spherical surfaces.

[0159] The third lens L3 is a biconvex lens with positive refractive power, the object side surface S6 is a convex surface, the image side surface S7 is a convex surface, and both the object side surface S6 and the image side surface S7 of the third lens L3 are spherical surfaces.

[0160] The fourth lens L4 is a biconcave lens with negative refractive power, the object side surface S7 is a concave surface, the image side surface S8 is a concave surface, and both the object side surface S7 and the image side surface S8 of the fourth lens L4 are spherical surfaces.

[0161] The fifth lens L5 is a meniscus lens with negative refractive power, the object side surface S9 is a convex surface, the image side surface S10 is a concave surface, and both the object side surface S9 and the image side surface S10 of the fifth lens L5 are spherical surfaces.

[0162] The sixth lens L6 is a biconvex lens with positive refractive power, the object side surface S11 is a convex surface, the image side surface S12 is a convex surface, and both the object side surface S11 and the image side surface S12 of the sixth lens L6 are aspherical surfaces.

[0163] In the present embodiment, the third lens L3 and the fourth lens L4 can be cemented to form a cemented lens.

[0164] Optionally, the optical lens can further include an auxiliary lens L7 with a non- refractive power, having an object side S13 and an image side S14. The auxiliary lens L7 can be a filter or a protective glass. The filter can be used to correct color deviation. The protective glass can be used to protect the image sensor chip located at the imaging plane IMA. Light from the object sequentially passes through each surface S1 to S14 and is finally imaged on the imaging plane IMA.

[0165] In the optical lens of the present embodiment, the stop STO can be arranged between the first lens L1 and the second lens L2 to further improve the imaging quality.

[0166] Table 10 shows the radius of curvature R, the thickness d / distance T, the refractive index Nd and the dispersion coefficient Vd of each lens of the optical lens of embodiment 4.

[0167]

[0168]

[0169] Table 10

[0170] In the present embodiment, the maximum field of view FOV of the optical lens is 34.4°. Table 11 below shows the total track length TTL (i.e., the distance on the optical axis from the center of the object side S1 of the first lens L1 to the imaging surface IMA) of the optical lens of Embodiment 4, the total effective focal length F of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, the maximum clear aperture D of the object side S1 of the first lens corresponding to the maximum field of view of the optical lens, the optical back focal length BFL (i.e., the distance on the optical axis from the center of the image side S12 of the sixth lens to the imaging surface IMA) of the optical lens, the effective focal length F1 of the first lens, the effective focal length F2 of the second lens, the effective focal length F3 of the third lens, the effective focal length F4 of the fourth lens, the effective focal length F5 of the fifth lens, the effective focal length F6 of the sixth lens, the combined focal length F34 of the third and fourth lenses, the central thickness dn of the nth lens having the largest central thickness among the first to sixth lenses, and the central thickness dm of the mth lens having the smallest central thickness among the first to sixth lenses (n and m are selected from 1, 2, 3, 4, 5, and 6), the radius of curvature R1 of the object side of the first lens, the radius of curvature R2 of the image side of the first lens, the radius of curvature R4 of the object side of the second lens, the radius of curvature R5 of the image side of the second lens, the radius of curvature R11 of the object side of the sixth lens, the radius of curvature R12 of the image side of the sixth lens, the interval distance T12 on the optical axis from the center of the image side of the first lens to the center of the object side of the second lens, and the interval distance T23 on the optical axis from the center of the image side of the second lens to the center of the object side of the third lens, wherein the units of TTL, BFL, F, D, H, F1, F2, F3, F34, F4, F5, F6, dn, dm, R1, R2, R4, R5, R11, R12, T12, and T23 are all millimeters (mm).

[0171] TTL 27.0859 F2 12.4953 BFL 2.9585 F3 10.5377 F 15.1908 F34 -34.7239 D 10.8822 F4 -6.3856 H 9.1240 F5 -55.2745 F1 -52.6135 F6 21.3169 dn 3.4818 dm 1.0315 R1 9.1511 R2 6.0864 R4 20.2914 R5 -11.6686 R11 18.0000 R12 -76.4500 T12 4.1956 T23 0.8948

[0172] Table 11

[0173] In Embodiment 4, the object and image sides of the first lens L1 and the sixth lens L6 can be aspherical surfaces, and the surface profile x of each aspherical lens can be defined by, but not limited to, the formula (1) in Embodiment 1. Table 12 below gives the conic constant k and the high-order term coefficients A4, A6, A8, A10, A12, A14, and A16 that can be used for each aspherical surface S1, S2, S11, and S12 in Embodiment 4.

[0174] face number k A4 A6 A8 A10 A12 A14 A16 S1 0.4416 -3.5745E-04 -7.5642E-06 1.2150E-07 -1.7915E-08 7.9444E-10 -1.7674E-11 1.5251E-13 S2 0.0171 -4.0553E-04 -1.4006E-05 -2.4000E-07 -2.1668E-08 2.0215E-09 -8.2461E-11 1.1247E-12 S11 9.1480 -2.4660E-04 -6.5536E-05 1.2128E-05 -1.5728E-06 1.1056E-07 -4.2400E-09 6.6503E-11 S12 53.4600 -3.9369E-04 -3.7851E-05 -2.5858E-06 4.8088E-07 -3.7151E-08 1.2726E-09 -1.7310E-11

[0175] Table 12

[0176] Example 5

[0177] The following refers toFigure 5 An optical lens according to Embodiment 5 of the present application is described. Figure 5 is a structural schematic diagram illustrating an optical lens according to Embodiment 5 of the present application.

[0178] As shown in Figure 5 , the optical lens comprises, in sequence from the object side to the image side along the 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.

[0179] The first lens L1 is a meniscus lens with negative focal power, the object side surface S1 is a convex surface, the image side surface S2 is a concave surface, and both the object side surface S1 and the image side surface S2 of the first lens L1 are aspherical surfaces.

[0180] The second lens L2 is a double convex lens with positive focal power, the object side surface S4 is a convex surface, the image side surface S5 is a convex surface, and both the object side surface S4 and the image side surface S5 of the second lens L2 are spherical surfaces.

[0181] The third lens L3 is a meniscus lens with positive focal power, the object side surface S6 is a convex surface, the image side surface S7 is a concave surface, and both the object side surface S6 and the image side surface S7 of the third lens L3 are spherical surfaces.

[0182] The fourth lens L4 is a meniscus lens with negative focal power, the object side surface S7 is a convex surface, the image side surface S8 is a concave surface, and both the object side surface S7 and the image side surface S8 of the fourth lens L4 are spherical surfaces.

[0183] The fifth lens L5 is a double concave lens with negative focal power, the object side surface S9 is a concave surface, the image side surface S10 is a concave surface, and both the object side surface S9 and the image side surface S10 of the fifth lens L5 are spherical surfaces.

[0184] The sixth lens L6 is a meniscus lens with negative focal power, the object side surface S11 is a convex surface, the image side surface S12 is a concave surface, and both the object side surface S11 and the image side surface S12 of the sixth lens L6 are aspherical surfaces.

[0185] In this embodiment, the third lens L3 and the fourth lens L4 can be cemented to form a cemented lens.

[0186] Alternatively, the optical lens can further comprise an auxiliary lens L7 with an object side surface S13 and an image side surface S14, which can be a filter or a protective glass. The filter can be used to correct color deviation. The protective glass can be used to protect the image sensor chip located at the imaging surface IMA. Light from the object passes through the surfaces S1 to S14 in sequence and is finally imaged on the imaging surface IMA.

[0187] In the optical lens of the present embodiment, the diaphragm STO can be arranged between the first lens L1 and the second lens L2 to further improve the imaging quality. Table 13 shows the radius of curvature R, the thickness d / distance T, the refractive index Nd, and the dispersion coefficient Vd of each lens of the optical lens of Embodiment 5.

[0188]

[0189]

[0190] Table 13

[0191] In the present embodiment, the maximum field of view FOV of the optical lens is 34.4°. Table 14 below shows the total optical length TTL (i.e., the distance on the optical axis from the center of the object side S1 of the first lens L1 to the imaging surface IMA) of the optical lens of Embodiment 5, the total effective focal length F of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, the maximum clear aperture D of the object side S1 of the first lens corresponding to the maximum field of view of the optical lens, the optical back focal length BFL (i.e., the distance on the optical axis from the center of the image side S12 of the sixth lens to the imaging surface IMA) of the optical lens, the effective focal length F1 of the first lens, the effective focal length F2 of the second lens, the effective focal length F3 of the third lens, the effective focal length F4 of the fourth lens, the effective focal length F5 of the fifth lens, the effective focal length F6 of the sixth lens, the combined focal length F34 of the third lens and the fourth lens, the central thickness dn of the nth lens having the largest central thickness among the first to sixth lenses, and the central thickness dm of the mth lens having the smallest central thickness among the first to sixth lenses (n and m are selected from 1, 2, 3, 4, 5, and 6), the radius of curvature R1 of the object side of the first lens, the radius of curvature R2 of the image side of the first lens, the radius of curvature R4 of the object side of the second lens, the radius of curvature R5 of the image side of the second lens, the radius of curvature R11 of the object side of the sixth lens, the radius of curvature R12 of the image side of the sixth lens, the interval distance T12 on the optical axis from the center of the image side of the first lens to the center of the object side of the second lens, and the interval distance T23 on the optical axis from the center of the image side of the second lens to the center of the object side of the third lens, wherein the units of TTL, BFL, F, D, H, F1, F2, F3, F34, F4, F5, F6, dn, dm, R1, R2, R4, R5, R11, R12, T12, and T23 are millimeters (mm).

[0192]

[0193]

[0194] Table 14

[0195] In embodiment 5, the object side and the image side of the first lens L1 and the sixth lens L6 can be aspherical surfaces, and the surface type x of each aspherical surface can be defined by, but not limited to, the formula (1) in embodiment 1. The following table 15 shows the conic constant k and the high-order term coefficients A4, A6, A8, A10, A12, A14 and A16 of each aspherical surface S5, S6, S12 and S13 in embodiment 5.

[0196] face number k A4 A6 A8 A10 A12 A14 A16 S1 0.3512 -4.7049E-04 -6.4337E-06 1.7940E-07 -1.6325E-08 7.7240E-10 -1.9303E-11 1.9995E-13 S2 0.0117 -5.7257E-04 -8.1465E-06 9.5060E-08 -1.6892E-08 1.8243E-09 -9.0737E-11 1.6707E-12 S11 27.6000 -9.9865E-04 -5.7601E-05 1.1365E-05 -1.5949E-06 1.1295E-07 -4.1684E-09 6.2648E-11 S12 15.7356 -1.0604E-03 -1.3360E-06 -3.8762E-06 4.7713E-07 -3.5643E-08 1.3438E-09 -2.0671E-11

[0197] Table 15

[0198] Example 6

[0199] The optical lens according to embodiment 6 of the present application is described below with reference to Figure 6 The optical lens according to embodiment 6 of the present application is described below with reference to Figure 6 is a schematic structural diagram illustrating the optical lens according to embodiment 6 of the present application.

[0200] As shown in Figure 6 , the optical lens sequentially comprises, along the optical axis from the object side to the image side, 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.

[0201] The first lens L1 is a meniscus lens with negative refractive power, the object side S1 thereof is a convex surface, the image side S2 thereof is a concave surface, and both the object side S1 and the image side S2 of the first lens L1 are aspherical surfaces.

[0202] The second lens L2 is a biconvex lens with positive refractive power, the object side S4 thereof is a convex surface, the image side S5 thereof is a convex surface, and both the object side S4 and the image side S5 of the second lens L2 are spherical surfaces.

[0203] The third lens L3 is a biconvex lens with positive refractive power, the object side S6 thereof is a convex surface, the image side S7 thereof is a convex surface, and both the object side S6 and the image side S7 of the third lens L3 are spherical surfaces.

[0204] The fourth lens L4 is a biconcave lens with negative refractive power, the object side S7 thereof is a concave surface, the image side S8 thereof is a concave surface, and both the object side S7 and the image side S8 of the fourth lens L4 are spherical surfaces.

[0205] The fifth lens L5 is a meniscus lens with positive refractive power, the object side S9 thereof is a concave surface, the image side S10 thereof is a convex surface, and both the object side S9 and the image side S10 of the fifth lens L5 are spherical surfaces.

[0206] The sixth lens L6 is a biconcave lens with negative refractive power, the object side S11 thereof is a concave surface, the image side S12 thereof is a concave surface, and both the object side S11 and the image side S12 of the sixth lens L6 are aspherical surfaces.

[0207] In the present embodiment, the third lens L3 and the fourth lens L4 can be cemented to form a cemented lens.

[0208] Optionally, the optical lens can further include an auxiliary lens L7 with a non-power surface S13 and a non-power surface S14, the auxiliary lens L7 can be a filter or a protection glass. The filter can be used to correct color deviation. The protection glass can be used to protect the image sensor chip located at the imaging surface IMA. The light from the object sequentially passes through each surface S1 to S14 and is finally imaged on the imaging surface IMA.

[0209] In the optical lens of the present embodiment, the optical lens can further include a stop STO, which can be arranged between the first lens L1 and the second lens L2 to further improve the imaging quality.

[0210] Table 16 shows the radius of curvature R, the thickness d / distance T (it should be understood that the thickness d / distance T in the row of S1 is the central thickness d1 of the first lens L1, the thickness d / distance T in the row of S2 is the interval distance T12 between the first lens L1 and the second lens L2, and so on), the refractive index Nd and the dispersion coefficient Vd of each lens of the optical lens of embodiment 6.

[0211]

[0212]

[0213] Table 16

[0214] In the present embodiment, the maximum field of view FOV of the optical lens is 34.4°. Table 17 below shows the total track length TTL (i.e., the distance on the optical axis from the center of the object side S1 of the first lens L1 to the imaging surface IMA) of the optical lens of embodiment 6, the total effective focal length F of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, the maximum clear aperture D of the object side S1 of the first lens corresponding to the maximum field of view of the optical lens, the optical back focal length BFL (i.e., the distance on the optical axis from the center of the image side S12 of the sixth lens to the imaging surface IMA) of the optical lens, the effective focal length F1 of the first lens, the effective focal length F2 of the second lens, the effective focal length F3 of the third lens, the effective focal length F4 of the fourth lens, the effective focal length F5 of the fifth lens, the effective focal length F6 of the sixth lens, the combined focal length F34 of the third and fourth lenses, the central thickness dn of the nth lens having the largest central thickness among the first to sixth lenses, and the central thickness dm of the mth lens having the smallest central thickness among the first to sixth lenses (n and m are selected from 1, 2, 3, 4, 5, and 6), the radius of curvature R1 of the object side of the first lens, the radius of curvature R2 of the image side of the first lens, the radius of curvature R4 of the object side of the second lens, the radius of curvature R5 of the image side of the second lens, the radius of curvature R11 of the object side of the sixth lens, the radius of curvature R12 of the image side of the sixth lens, the interval distance T12 on the optical axis from the center of the image side of the first lens to the center of the object side of the second lens, and the interval distance T23 on the optical axis from the center of the image side of the second lens to the center of the object side of the third lens, wherein the units of TTL, BFL, F, D, H, F1, F2, F3, F34, F4, F5, F6, dn, dm, R1, R2, R4, R5, R11, R12, T12, and T23 are all millimeters (mm).

[0215]

[0216]

[0217] Table 17

[0218] In embodiment 6, the object and image sides of the first lens L1 and the sixth lens L6 can be aspherical surfaces, and the surface profile x of each aspherical lens can be defined by, but not limited to, formula (1) in embodiment 1. Table 18 below gives the conic constant k and the high-order term coefficients A4, A6, A8, A10, A12, A14, and A16 that can be used for each aspherical surface S1, S2, S11, and S12 in embodiment 6.

[0219] face number k A4 A6 A8 A10 A12 A14 A16 S1 0.1267 -5.2202E-04 -1.2438E-05 2.0975E-07 -1.8579E-08 6.9631E-10 -1.6190E-11 1.8620E-13 S2 -0.1874 -7.5270E-04 -2.3750E-05 1.0826E-07 -3.2230E-08 1.9872E-09 -9.4209E-11 1.9800E-12 S11 15.2403 -2.7709E-04 -4.6607E-05 1.3309E-05 -1.6616E-06 1.1520E-07 -4.0710E-09 5.7146E-11 S12 -47.0000 -1.1767E-03 3.1823E-05 -5.4508E-06 5.8925E-07 -3.5910E-08 1.1386E-09 -1.4569E-11

[0220] Table 18

[0221] Example 7

[0222] The following description refers to the accompanying drawings. Figure 7 An optical lens according to Embodiment 7 of the present application is described. Figure 7 is a structural schematic diagram illustrating an optical lens according to Embodiment 7 of the present application.

[0223] As shown in Figure 7 , the optical lens comprises, in order from the object side to the image side along the 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.

[0224] The first lens L1 is a meniscus lens with negative focal power, the object side surface S1 is a convex surface, the image side surface S2 is a concave surface, and both the object side surface S1 and the image side surface S2 of the first lens L1 are aspherical surfaces.

[0225] The second lens L2 is a double convex lens with positive focal power, the object side surface S4 is a convex surface, the image side surface S5 is a convex surface, and both the object side surface S4 and the image side surface S5 of the second lens L2 are spherical surfaces.

[0226] The third lens L3 is a double convex lens with positive focal power, the object side surface S6 is a convex surface, the image side surface S7 is a convex surface, and both the object side surface S6 and the image side surface S7 of the third lens L3 are spherical surfaces.

[0227] The fourth lens L4 is a double concave lens with negative focal power, the object side surface S7 is a concave surface, the image side surface S8 is a concave surface, and both the object side surface S7 and the image side surface S8 of the fourth lens L4 are spherical surfaces.

[0228] The fifth lens L5 is a double convex lens with positive focal power, the object side surface S9 is a convex surface, the image side surface S10 is a convex surface, and both the object side surface S9 and the image side surface S10 of the fifth lens L5 are spherical surfaces.

[0229] The sixth lens L6 is a meniscus lens with negative focal power, the object side surface S11 is a concave surface, the image side surface S12 is a convex surface, and both the object side surface S11 and the image side surface S12 of the sixth lens L6 are aspherical surfaces.

[0230] In this embodiment, the third lens L3 and the fourth lens L4 can be cemented to form a cemented lens.

[0231] Alternatively, the optical lens can further comprise an auxiliary lens L7 with an object side surface S13 and an image side surface S14, which can be a filter or a protective glass. The filter can be used to correct color deviation. The protective glass can be used to protect the image sensor chip located at the imaging surface IMA. Light from the object passes through the surfaces S1 to S14 in order and is finally imaged on the imaging surface IMA.

[0232] In the optical lens of the present embodiment, the diaphragm STO can be arranged between the first lens L1 and the second lens L2 to further improve the imaging quality.

[0233] Table 19 shows the radius of curvature R, the thickness d / distance T, the refractive index Nd, and the dispersion coefficient Vd of each lens of the optical lens of Example 7.

[0234]

[0235] Table 19

[0236] In the present embodiment, the maximum field of view FOV of the optical lens is 34.4°. Table 20 below shows the total track length TTL of the optical lens (i.e., the distance on the optical axis from the center of the object side S1 of the first lens L1 to the imaging surface IMA), the total effective focal length F of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, the maximum clear aperture D of the object side S1 of the first lens corresponding to the maximum field of view of the optical lens, the optical back focal length BFL of the optical lens (i.e., the distance on the optical axis from the center of the image side S12 of the sixth lens to the imaging surface IMA), the effective focal length F1 of the first lens, the effective focal length F2 of the second lens, the effective focal length F3 of the third lens, the effective focal length F4 of the fourth lens, the effective focal length F5 of the fifth lens, the effective focal length F6 of the sixth lens, the combined focal length F34 of the third lens and the fourth lens, the central thickness dn of the nth lens having the largest central thickness among the first to sixth lenses, and the central thickness dm of the mth lens having the smallest central thickness among the first to sixth lenses (n and m are selected from 1, 2, 3, 4, 5, and 6), the radius of curvature R1 of the object side of the first lens, the radius of curvature R2 of the image side of the first lens, the radius of curvature R4 of the object side of the second lens, the radius of curvature R5 of the image side of the second lens, the radius of curvature R11 of the object side of the sixth lens, the radius of curvature R12 of the image side of the sixth lens, the interval distance T12 on the optical axis from the center of the image side of the first lens to the center of the object side of the second lens, and the interval distance T23 on the optical axis from the center of the image side of the second lens to the center of the object side of the third lens, wherein the units of TTL, BFL, F, D, H, F1, F2, F3, F34, F4, F5, F6, dn, dm, R1, R2, R4, R5, R11, R12, T12, and T23 are all millimeters (mm).

[0237]

[0238]

[0239] Table 20

[0240] In Embodiment 7, the object side surface and the image side surface of the first lens L1 and the sixth lens L6 can be aspherical surfaces, and the surface type x of each aspherical surface can be defined by, but not limited to, the formula (1) in Embodiment 1. The following Table 21 shows the conic constant k and the high order term coefficients A4, A6, A8, A10, A12, A14 and A16 of each aspherical surface S1, S2, S11 and S12 in Embodiment 7.

[0241] face number k A4 A6 A8 A10 A12 A14 A16 S1 0.5384 -4.3045E-04 -7.8697E-06 2.4290E-07 -1.8111E-08 7.2269E-10 -1.5730E-11 1.4476E-13 S2 0.0300 -4.8055E-04 -1.2229E-05 3.5519E-07 -3.6304E-08 2.1320E-09 -7.4389E-11 1.0840E-12 S11 6.0001 -6.2638E-04 -2.7273E-05 1.0361E-05 -1.4692E-06 1.1382E-07 -4.9992E-09 9.4744E-11 S12 -39.0000 -1.4847E-03 2.4753E-07 -4.0365E-06 4.8698E-07 -3.6368E-08 1.3069E-09 -1.8903E-11

[0242] Table 21

[0243] Example 8

[0244] The optical lens according to Embodiment 8 of the present application is described below with reference to Figure 8 The optical lens according to Embodiment 8 of the present application is described below with reference to Figure 8 is a structural schematic diagram illustrating the optical lens according to Embodiment 8 of the present application.

[0245] As shown in Figure 8 the optical lens sequentially comprises, along the optical axis from the object side to the image side, 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.

[0246] The first lens L1 is a meniscus lens with negative refractive power, the object side surface S1 is a convex surface, the image side surface S2 is a concave surface, and both the object side surface S1 and the image side surface S2 of the first lens L1 are aspherical surfaces.

[0247] The second lens L2 is a double convex lens with positive refractive power, the object side surface S4 is a convex surface, the image side surface S5 is a convex surface, and both the object side surface S4 and the image side surface S5 of the second lens L2 are spherical surfaces.

[0248] The third lens L3 is a meniscus lens with positive refractive power, the object side surface S6 is a convex surface, the image side surface S7 is a concave surface, and both the object side surface S6 and the image side surface S7 of the third lens L3 are spherical surfaces.

[0249] The fourth lens L4 is a meniscus lens with negative refractive power, the object side surface S7 is a convex surface, the image side surface S8 is a concave surface, and both the object side surface S7 and the image side surface S8 of the fourth lens L4 are spherical surfaces.

[0250] The fifth lens L5 is a meniscus lens with positive refractive power, the object side surface S9 is a convex surface, the image side surface S10 is a concave surface, and both the object side surface S9 and the image side surface S10 of the fifth lens L5 are spherical surfaces.

[0251] The sixth lens L6 is a double concave lens with negative refractive power, the object side surface S11 is a concave surface, the image side surface S12 is a concave surface, and both the object side surface S11 and the image side surface S12 of the sixth lens L6 are aspherical surfaces.

[0252] In the present embodiment, the third lens L3 and the fourth lens L4 can be cemented to form a cemented lens.

[0253] Optionally, the optical lens can further include an auxiliary lens L7 with a non- power side S13 and an image side S14. The auxiliary lens L7 can be a filter or a protective glass. The filter can be used to correct color deviation. The protective glass can be used to protect the image sensor chip located at the imaging surface IMA. Light from the object sequentially passes through each surface S1 to S14 and is finally imaged on the imaging surface IMA.

[0254] In the optical lens of the present embodiment, the stop STO can be arranged between the first lens L1 and the second lens L2 to further improve the imaging quality.

[0255] Table 22 shows the radius of curvature R, the thickness d / distance T, the refractive index Nd, and the dispersion coefficient Vd of each lens of the optical lens of embodiment 8.

[0256]

[0257] Table 22

[0258] In the present embodiment, the maximum field of view FOV of the optical lens is 34.4°. Table 23 below shows the total track length TTL (i.e., the distance on the optical axis from the center of the object side S1 of the first lens L1 to the imaging surface IMA) of the optical lens of embodiment 8, the total effective focal length F of the optical lens, the image height H corresponding to the maximum field of view angle of the optical lens, the maximum clear aperture D of the object side S1 of the first lens corresponding to the maximum field of view angle of the optical lens, the optical back focal length BFL (i.e., the distance on the optical axis from the center of the image side S12 of the sixth lens to the imaging surface IMA) of the optical lens, the effective focal length F1 of the first lens, the effective focal length F2 of the second lens, the effective focal length F3 of the third lens, the effective focal length F4 of the fourth lens, the effective focal length F5 of the fifth lens, the effective focal length F6 of the sixth lens, the combined focal length F34 of the third and fourth lenses, the central thickness dn of the nth lens having the largest central thickness among the first to sixth lenses, and the central thickness dm of the mth lens having the smallest central thickness among the first to sixth lenses (n and m are selected from 1, 2, 3, 4, 5, and 6), the radius of curvature R1 of the object side of the first lens, the radius of curvature R2 of the image side of the first lens, the radius of curvature R4 of the object side of the second lens, the radius of curvature R5 of the image side of the second lens, the radius of curvature R11 of the object side of the sixth lens, the radius of curvature R12 of the image side of the sixth lens, the interval distance T12 on the optical axis from the center of the image side of the first lens to the center of the object side of the second lens, and the interval distance T23 on the optical axis from the center of the image side of the second lens to the center of the object side of the third lens, wherein the units of TTL, BFL, F, D, H, F1, F2, F3, F34, F4, F5, F6, dn, dm, R1, R2, R4, R5, R11, R12, T12, and T23 are all millimeters (mm).

[0259]

[0260]

[0261] Table 23

[0262] In embodiment 8, the object and image sides of the first lens L1 and the sixth lens L6 can be aspherical surfaces, and the surface profile x of each aspherical lens can be defined by, but not limited to, formula (1) in embodiment 1. Table 24 below gives the conic constant k and the high-order term coefficients A4, A6, A8, A10, A12, A14, and A16 that can be used for each aspherical surface S1, S2, S11, and S12 in embodiment 8.

[0263] face number k A4 A6 A8 A10 A12 A14 A16 S1 0.4720 -3.9641E-04 -6.8467E-06 1.6379E-07 -1.6384E-08 7.7458E-10 -1.9343E-11 1.9639E-13 S2 0.0092 -4.6520E-04 -1.0758E-05 5.4269E-08 -1.6198E-08 1.7852E-09 -9.4469E-11 1.7782E-12 S11 37.2400 -7.0097E-04 -5.2435E-05 1.1114E-05 -1.5560E-06 1.1380E-07 -4.4214E-09 7.1034E-11 S12 24.1600 -7.6730E-04 -1.0950E-05 -3.0590E-06 4.8609E-07 -3.6685E-08 1.3088E-09 -1.7854E-11

[0264] Table 24

[0265] Example 9

[0266] The following description refers to Figure 9 An optical lens according to Embodiment 9 of the present application is described. Figure 9 is a structural schematic diagram illustrating an optical lens according to Embodiment 9 of the present application.

[0267] As Figure 9 shown, the optical lens includes, in order from the object side to the image side along the 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.

[0268] The first lens L1 is a meniscus lens with negative focal power, the object side surface S1 is a convex surface, the image side surface S2 is a concave surface, and both the object side surface S1 and the image side surface S2 of the first lens L1 are aspherical surfaces.

[0269] The second lens L2 is a double convex lens with positive focal power, the object side surface S4 is a convex surface, the image side surface S5 is a convex surface, and both the object side surface S4 and the image side surface S5 of the second lens L2 are spherical surfaces.

[0270] The third lens L3 is a double convex lens with positive focal power, the object side surface S6 is a convex surface, the image side surface S7 is a convex surface, and both the object side surface S6 and the image side surface S7 of the third lens L3 are spherical surfaces.

[0271] The fourth lens L4 is a double concave lens with negative focal power, the object side surface S7 is a concave surface, the image side surface S8 is a concave surface, and both the object side surface S7 and the image side surface S8 of the fourth lens L4 are spherical surfaces.

[0272] The fifth lens L5 is a meniscus lens with negative focal power, the object side surface S9 is a convex surface, the image side surface S10 is a concave surface, and both the object side surface S9 and the image side surface S10 of the fifth lens L5 are spherical surfaces.

[0273] The sixth lens L6 is a double convex lens with positive focal power, the object side surface S11 is a convex surface, the image side surface S12 is a convex surface, and both the object side surface S11 and the image side surface S12 of the sixth lens L6 are aspherical surfaces.

[0274] In this embodiment, the third lens L3 and the fourth lens L4 can be cemented to form a cemented lens.

[0275] Optionally, the optical lens can further include an auxiliary lens L7 with an object side surface S13 and an image side surface S14, which has no focal power. The auxiliary lens L7 can be a filter or a protective glass. The filter can be used to correct color deviation. The protective glass can be used to protect the image sensor chip located at the imaging surface IMA. Light from an object sequentially passes through the surfaces S1 to S14 and is finally imaged on the imaging surface IMA.

[0276] In the optical lens of this embodiment, the aperture STO can be disposed between the first lens L1 and the second lens L2 to further improve the imaging quality.

[0277] Table 25 shows the curvature radius R, thickness d / distance T, refractive index Nd, and dispersion coefficient Vd of each lens of the optical lens of Example 9.

[0278]

[0279] Table 25

[0280] In this embodiment, the maximum field of view FOV of the optical lens is 34.4°. Table 26 below shows the total optical length TTL of the optical lens of Example 9 (i.e., the distance on the optical axis from the center of the object-side surface S1 of the first lens L1 to the imaging surface IMA), the total effective focal length F of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, the maximum clear aperture D of the object-side surface S1 of the first lens corresponding to the maximum field of view of the optical lens, the optical back focus BFL of the optical lens (i.e., the distance on the optical axis from the center of the image-side surface S12 of the sixth lens to the imaging surface IMA), the effective focal length F1 of the first lens, the effective focal length F2 of the second lens, the effective focal length F3 of the third lens, the effective focal length F4 of the fourth lens, the effective focal length F5 of the fifth lens, the effective focal length F6 of the sixth lens, the combined focal length F34 of the third lens and the fourth lens, the center thickness dn of the nth lens having the largest center thickness among the first to sixth lenses, and the distance between the first to sixth lenses. The center thickness dm of the mth lens with the smallest center thickness among the lenses (n and m are selected from 1, 2, 3, 4, 5 and 6), the curvature radius R1 of the object side surface of the first lens, the curvature radius R2 of the image side surface of the first lens, the curvature radius R4 of the object side surface of the second lens, the curvature radius R5 of the image side surface of the second lens, the curvature radius R11 of the object side surface of the sixth lens, the curvature radius R12 of the image side surface of the sixth lens, the spacing distance T12 from the center of the image side surface of the first lens to the center of the object side surface of the second lens on the optical axis, and the spacing distance T23 from the center of the image side surface of the second lens to the center of the object side surface of the third lens on the optical axis, wherein the units of TTL, BFL, F, D, H, F1, F2, F3, F34, F4, F5, F6, dn, dm, R1, R2, R4, R5, R11, R12, T12 and T23 are all millimeters (mm).

[0281]

[0282]

[0283] Table 26

[0284] In Embodiment 9, the object side surface and the image side surface of the first lens L1 and the sixth lens L6 can be aspherical surfaces, and the surface type x of each aspherical surface can be defined by, but not limited to, the formula (1) in Embodiment 1. The following Table 27 gives the conic constant k and the high order term coefficients A4, A6, A8, A10, A12, A14 and A16 which can be used in each aspherical surface S1, S2, S11 and S12 in Embodiment 9.

[0285] face number k A4 A6 A8 A10 A12 A14 A16 S1 0.4439 -3.5097E-04 -7.5559E-06 1.2567E-07 -1.8016E-08 7.9356E-10 -1.7574E-11 1.5097E-13 S2 0.0198 -3.9310E-04 -1.3883E-05 -2.3713E-07 -2.1770E-08 2.0205E-09 -8.2213E-11 1.1190E-12 S11 6.8516 -2.4580E-04 -6.9897E-05 1.2340E-05 -1.5734E-06 1.1035E-07 -4.2331E-09 6.6006E-11 S12 56.3900 -3.9704E-04 -3.9363E-05 -2.6572E-06 4.8251E-07 -3.7000E-08 1.2697E-09 -1.7742E-11

[0286] Table 27

[0287] Example 10

[0288] The optical lens according to Embodiment 10 of the present application is described below with reference to Figure 10 The optical lens according to Embodiment 10 of the present application is described below with reference to Figure 10 is a structural schematic diagram illustrating the optical lens according to Embodiment 10 of the present application.

[0289] As shown in Figure 10 , the optical lens comprises, in sequence from the object side to the image side along the 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.

[0290] The first lens L1 is a meniscus lens with negative refractive power, the object side surface S1 is a convex surface, the image side surface S2 is a concave surface, and both the object side surface S1 and the image side surface S2 of the first lens L1 are aspherical surfaces.

[0291] The second lens L2 is a double convex lens with positive refractive power, the object side surface S4 is a convex surface, the image side surface S5 is a convex surface, and both the object side surface S4 and the image side surface S5 of the second lens L2 are spherical surfaces.

[0292] The third lens L3 is a meniscus lens with positive refractive power, the object side surface S6 is a convex surface, the image side surface S7 is a concave surface, and both the object side surface S6 and the image side surface S7 of the third lens L3 are spherical surfaces.

[0293] The fourth lens L4 is a meniscus lens with negative refractive power, the object side surface S7 is a convex surface, the image side surface S8 is a concave surface, and both the object side surface S7 and the image side surface S8 of the fourth lens L4 are spherical surfaces.

[0294] The fifth lens L5 is a double concave lens with negative refractive power, the object side surface S9 is a concave surface, the image side surface S10 is a concave surface, and both the object side surface S9 and the image side surface S10 of the fifth lens L5 are spherical surfaces.

[0295] The sixth lens L6 is a meniscus lens with negative refractive power, the object side surface S11 is a convex surface, the image side surface S12 is a concave surface, and both the object side surface S11 and the image side surface S12 of the sixth lens L6 are aspherical surfaces.

[0296] In the present embodiment, the third lens L3 and the fourth lens L4 can be cemented to form a cemented lens.

[0297] Optionally, the optical lens can further include an auxiliary lens L7 with a non- power side S13 and an image side S14. The auxiliary lens L7 can be a filter or a protective glass. The filter can be used to correct color deviation. The protective glass can be used to protect the image sensor chip located at the imaging surface IMA. Light from the object sequentially passes through each surface S1 to S14 and is finally imaged on the imaging surface IMA.

[0298] In the optical lens of the present embodiment, the stop STO can be arranged between the first lens L1 and the second lens L2 to further improve the imaging quality. Table 28 shows the radius of curvature R, the thickness d / distance T, the refractive index Nd, and the dispersion coefficient Vd of each lens of the optical lens of embodiment 10.

[0299]

[0300] Table 28

[0301] In the present embodiment, the maximum field of view FOV of the optical lens is 34.4°. Table 29 below shows the total track length TTL (i.e., the distance on the optical axis from the center of the object side S1 of the first lens L1 to the imaging surface IMA) of the optical lens of embodiment 10, the total effective focal length F of the optical lens, the image height H corresponding to the maximum field of view angle of the optical lens, the maximum clear aperture D of the object side S1 of the first lens corresponding to the maximum field of view angle of the optical lens, the optical back focal length BFL (i.e., the distance on the optical axis from the center of the image side S12 of the sixth lens to the imaging surface IMA) of the optical lens, the effective focal length F1 of the first lens, the effective focal length F2 of the second lens, the effective focal length F3 of the third lens, the effective focal length F4 of the fourth lens, the effective focal length F5 of the fifth lens, the effective focal length F6 of the sixth lens, the combined focal length F34 of the third and fourth lenses, the center thickness dn of the nth lens having the largest center thickness among the first to sixth lenses, and the center thickness dm of the mth lens having the smallest center thickness among the first to sixth lenses (n and m are selected from 1, 2, 3, 4, 5, and 6), the radius of curvature R1 of the object side of the first lens, the radius of curvature R2 of the image side of the first lens, the radius of curvature R4 of the object side of the second lens, the radius of curvature R5 of the image side of the second lens, the radius of curvature R11 of the object side of the sixth lens, the radius of curvature R12 of the image side of the sixth lens, the interval distance T12 on the optical axis from the center of the image side of the first lens to the center of the object side of the second lens, and the interval distance T23 on the optical axis from the center of the image side of the second lens to the center of the object side of the third lens, wherein the units of TTL, BFL, F, D, H, F1, F2, F3, F34, F4, F5, F6, dn, dm, R1, R2, R4, R5, R11, R12, T12, and T23 are all millimeters (mm).

[0302]

[0303]

[0304] Table 29

[0305] In embodiment 10, the object and image sides of the first lens L1 and the sixth lens L6 can be aspherical surfaces, and the surface profile x of each aspherical lens can be defined by, but not limited to, formula (1) in embodiment 1. Table 30 below gives the conic constant k and the high-order term coefficients A4, A6, A8, A10, A12, A14, and A16 that can be used for each aspherical surface S5, S6, S12, and S13 in embodiment 10.

[0306] face number k A4 A6 A8 A10 A12 A14 A16 S1 0.3509 -4.7050E-04 -6.4395E-06 1.7900E-07 -1.6344E-08 7.7177E-10 -1.9314E-11 2.0045E-13 S2 0.0121 -5.7241E-04 -8.1337E-06 9.5566E-08 -1.6893E-08 1.8220E-09 -9.1014E-11 1.6454E-12 S11 72.3500 -9.9847E-04 -5.7684E-05 1.3602E-05 -1.5950E-06 1.1296E-07 -4.1678E-09 6.2661E-11 S12 15.7175 -1.0594E-03 -1.0666E-06 -3.8631E-06 4.7751E-07 -3.5641E-08 1.3430E-09 -2.0737E-11

[0307] Table 30

[0308] Example 11

[0309] The following description refers to the accompanying drawings. Figure 11 An optical lens according to Embodiment 11 of the present application is described. Figure 11 is a structural schematic diagram illustrating an optical lens according to Embodiment 11 of the present application.

[0310] As shown in Figure 11 , the optical lens comprises, in order from the object side to the image side along the 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.

[0311] The first lens L1 is a meniscus lens with negative focal power, the object side surface S1 is a convex surface, the image side surface S2 is a concave surface, and both the object side surface S1 and the image side surface S2 of the first lens L1 are aspherical surfaces.

[0312] The second lens L2 is a double convex lens with positive focal power, the object side surface S4 is a convex surface, the image side surface S5 is a convex surface, and both the object side surface S4 and the image side surface S5 of the second lens L2 are spherical surfaces.

[0313] The third lens L3 is a double convex lens with positive focal power, the object side surface S6 is a convex surface, the image side surface S7 is a convex surface, and both the object side surface S6 and the image side surface S7 of the third lens L3 are spherical surfaces.

[0314] The fourth lens L4 is a double concave lens with negative focal power, the object side surface S7 is a concave surface, the image side surface S8 is a concave surface, and both the object side surface S7 and the image side surface S8 of the fourth lens L4 are spherical surfaces.

[0315] The fifth lens L5 is a meniscus lens with negative focal power, the object side surface S9 is a convex surface, the image side surface S10 is a concave surface, and both the object side surface S9 and the image side surface S10 of the fifth lens L5 are spherical surfaces.

[0316] The sixth lens L6 is a meniscus lens with positive focal power, the object side surface S11 is a convex surface, the image side surface S12 is a concave surface, and both the object side surface S11 and the image side surface S12 of the sixth lens L6 are aspherical surfaces.

[0317] In this embodiment, the third lens L3 and the fourth lens L4 can be cemented to form a cemented lens.

[0318] Optionally, the optical lens can further comprise an auxiliary lens L7 with an object side surface S13 and an image side surface S14, which can be a filter or a protective glass. The filter can be used to correct color deviation. The protective glass can be used to protect the image sensor chip located at the imaging surface IMA. Light from the object passes through the surfaces S1 to S14 in order and is finally imaged on the imaging surface IMA.

[0319] In the optical lens of the embodiment, the diaphragm STO can be arranged between the first lens L1 and the second lens L2 to further improve the imaging quality.

[0320] Table 31 shows the radius of curvature R, the thickness d / the distance T, the refractive index Nd, and the dispersion coefficient Vd of each lens of the optical lens of Example 11.

[0321]

[0322] Table 31

[0323] In the embodiment, the maximum field of view FOV of the optical lens is 34.4°. Table 32 below shows the total optical length TTL (i.e., the distance on the optical axis from the center of the object side S1 of the first lens L1 to the imaging surface IMA) of the optical lens of Example 11, the total effective focal length F of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, the maximum light passing aperture D of the object side S1 of the first lens corresponding to the maximum field of view of the optical lens, the optical back focal length BFL (i.e., the distance on the optical axis from the center of the image side S12 of the sixth lens to the imaging surface IMA) of the optical lens, the effective focal length F1 of the first lens, the effective focal length F2 of the second lens, the effective focal length F3 of the third lens, the effective focal length F4 of the fourth lens, the effective focal length F5 of the fifth lens, the effective focal length F6 of the sixth lens, the combined focal length F34 of the third lens and the fourth lens, the central thickness dn of the nth lens having the largest central thickness among the first to sixth lenses, and the central thickness dm of the mth lens having the smallest central thickness among the first to sixth lenses (n and m are selected from 1, 2, 3, 4, 5, and 6), the radius of curvature R1 of the object side of the first lens, the radius of curvature R2 of the image side of the first lens, the radius of curvature R4 of the object side of the second lens, the radius of curvature R5 of the image side of the second lens, the radius of curvature R11 of the object side of the sixth lens, the radius of curvature R12 of the image side of the sixth lens, the interval distance T12 on the optical axis from the center of the image side of the first lens to the center of the object side of the second lens, and the interval distance T23 on the optical axis from the center of the image side of the second lens to the center of the object side of the third lens, wherein the units of TTL, BFL, F, D, H, F1, F2, F3, F34, F4, F5, F6, dn, dm, R1, R2, R4, R5, R11, R12, T12, and T23 are millimeters (mm).

[0324] TTL 27.0087 F2 12.7174 BFL 2.9671 F3 11.4396 F 15.3157 F34 -31.9713 D 10.7880 F4 -6.7528 H 9.1840 F5 -146.7553 F1 -65.5494 F6 40.7441 dn 4.4374 dm 0.6500 R1 11.8717 R2 7.9637 R4 20.1187 R5 -11.8311 R11 18.2130 R12 49.3472 T12 3.2841 T23 0.1000

[0325] Table 32

[0326] In Embodiment 11, the object side surface and the image side surface of the first lens L1 and the sixth lens L6 can be aspherical surfaces, and the surface type x of each aspherical surface can be defined by, but not limited to, the formula (1) in Embodiment 1. The following Table 33 shows the conic constant k and the high order term coefficients A4, A6, A8, A10, A12, A14 and A16 which can be used in the aspherical surfaces S1, S2, S11 and S12 in Embodiment 11.

[0327] face number k A B C D E G H S1 0.7855 -2.5454E-04 -6.6910E-06 2.8135E-07 -2.0330E-08 7.1006E-10 -1.3141E-11 1.0063E-13 S2 0.2450 -1.7975E-04 -1.1158E-05 5.5268E-07 -4.4839E-08 1.6175E-09 -2.8036E-11 1.9665E-13 S11 -75.1240 9.8514E-04 -1.4020E-04 1.9371E-05 -1.7739E-06 9.5062E-08 -2.6477E-09 3.0950E-11 S12 15.2400 -2.7411E-04 -8.1705E-05 4.4540E-06 5.7114E-08 -2.7634E-08 1.4212E-09 -2.2543E-11

[0328] Table 33

[0329] Example 12

[0330] The optical lens according to Embodiment 12 of the present application is described below with reference to Figure 12 The optical lens according to Embodiment 12 of the present application is described below with reference to Figure 12 is a structural schematic diagram illustrating the optical lens according to Embodiment 12 of the present application.

[0331] As shown in Figure 12 , the optical lens sequentially comprises, along the optical axis from the object side to the image side, 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.

[0332] The first lens L1 is a meniscus lens with negative refractive power, the object side surface S1 is a convex surface, the image side surface S2 is a concave surface, and both the object side surface S1 and the image side surface S2 of the first lens L1 are aspherical surfaces.

[0333] The second lens L2 is a biconvex lens with positive refractive power, the object side surface S4 is a convex surface, the image side surface S5 is a convex surface, and both the object side surface S4 and the image side surface S5 of the second lens L2 are spherical surfaces.

[0334] The third lens L3 is a biconvex lens with positive refractive power, the object side surface S6 is a convex surface, the image side surface S7 is a convex surface, and both the object side surface S6 and the image side surface S7 of the third lens L3 are spherical surfaces.

[0335] The fourth lens L4 is a biconcave lens with negative refractive power, the object side surface S7 is a concave surface, the image side surface S8 is a concave surface, and both the object side surface S7 and the image side surface S8 of the fourth lens L4 are spherical surfaces.

[0336] The fifth lens L5 is a meniscus lens with positive refractive power, the object side surface S9 is a convex surface, the image side surface S10 is a concave surface, and both the object side surface S9 and the image side surface S10 of the fifth lens L5 are spherical surfaces.

[0337] The sixth lens L6 is a meniscus lens with positive refractive power, the object side surface S11 is a concave surface, the image side surface S12 is a convex surface, and both the object side surface S11 and the image side surface S12 of the sixth lens L6 are aspherical surfaces.

[0338] In the present embodiment, the third lens L3 and the fourth lens L4 can be cemented to form a cemented lens.

[0339] Optionally, the optical lens can further include an auxiliary lens L7 with a non- power side S13 and an image side S14. The auxiliary lens L7 can be a filter or a protective glass. The filter can be used to correct color deviation. The protective glass can be used to protect the image sensor chip located at the imaging surface IMA. Light from the object sequentially passes through each surface S1 to S14 and is finally imaged on the imaging surface IMA.

[0340] In the optical lens of the present embodiment, the stop STO can be arranged between the first lens L1 and the second lens L2 to further improve the imaging quality.

[0341] Table 34 shows the radius of curvature R, the thickness d / distance T, the refractive index Nd, and the dispersion coefficient Vd of each lens of the optical lens of embodiment 12.

[0342]

[0343] Table 34

[0344] In the present embodiment, the maximum field of view FOV of the optical lens is 34.4°. Table 35 below shows the total track length TTL (i.e., the distance on the optical axis from the center of the object side S1 of the first lens L1 to the imaging surface IMA) of the optical lens of embodiment 12, the total effective focal length F of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, the maximum clear aperture D of the object side S1 of the first lens corresponding to the maximum field of view of the optical lens, the optical back focal length BFL (i.e., the distance on the optical axis from the center of the image side S12 of the sixth lens to the imaging surface IMA) of the optical lens, the effective focal length F1 of the first lens, the effective focal length F2 of the second lens, the effective focal length F3 of the third lens, the effective focal length F4 of the fourth lens, the effective focal length F5 of the fifth lens, the effective focal length F6 of the sixth lens, the combined focal length F34 of the third and fourth lenses, the central thickness dn of the nth lens having the largest central thickness among the first to sixth lenses, and the central thickness dm of the mth lens having the smallest central thickness among the first to sixth lenses (n and m are selected from 1, 2, 3, 4, 5, and 6), the radius of curvature R1 of the object side of the first lens, the radius of curvature R2 of the image side of the first lens, the radius of curvature R4 of the object side of the second lens, the radius of curvature R5 of the image side of the second lens, the radius of curvature R11 of the object side of the sixth lens, the radius of curvature R12 of the image side of the sixth lens, the interval distance T12 on the optical axis from the center of the image side of the first lens to the center of the object side of the second lens, and the interval distance T23 on the optical axis from the center of the image side of the second lens to the center of the object side of the third lens, wherein the units of TTL, BFL, F, D, H, F1, F2, F3, F34, F4, F5, F6, dn, dm, R1, R2, R4, R5, R11, R12, T12, and T23 are all millimeters (mm).

[0345] TTL 27.8277 F2 12.5463 BFL 2.9583 F3 9.8255 F 15.3836 F34 -41.6593 D 11.0576 F4 -6.0770 H 9.1540 F5 99.0471 F1 -45.2364 F6 86.1850 dn 3.9855 dm 0.7000 R1 9.5373 R2 5.9912 R4 20.6651 R5 -11.5335 R11 -50.1237 R12 -27.9422 T12 4.2425 T23 0.1000

[0346] Table 35

[0347] In embodiment 12, the object and image sides of the first lens L1 and the sixth lens L6 can be aspherical surfaces, and the surface profile x of each aspherical lens can be defined by, but not limited to, formula (1) in embodiment 1. Table 36 below gives the conic constant k and the high-order term coefficients A4, A6, A8, A10, A12, A14, and A16 that can be used for each aspherical surface S1, S2, S11, and S12 in embodiment 12.

[0348] face number k A4 A6 A8 A10 A12 A14 A16 S1 -0.1494 -2.7898E-04 -5.8694E-06 8.8219E-08 -7.6021E-09 2.5787E-10 -4.5717E-12 3.3982E-14 S2 -0.4720 -2.3072E-04 -1.0775E-05 1.3498E-07 -1.4579E-08 6.8141E-10 -1.5809E-11 1.8054E-13 S11 16.3400 -3.4894E-04 -2.4693E-05 1.0496E-06 4.5202E-08 -2.8387E-08 2.1747E-09 -5.9618E-11 S12 9.7214 -1.6932E-04 -1.0257E-04 1.1059E-05 -8.4665E-07 3.6275E-08 -8.2813E-10 7.5806E-12

[0349] Table 36

[0350] In summary, Embodiments 1 to 12 satisfy the relationships shown in Tables 37-1 and 37-2. In Tables 37-1 and 37-2, the units of TTL, BFL, F, D, H, F1, F2, F3, F4, F5, F6, F34, R1, R2, R4, R5, R11, R12, T12, dn, dm, and T23 are millimeters (mm), and the unit of FOV is degrees (°).

[0351]

[0352]

[0353] Table 37-1

[0354] Conditional expression / Example 7 8 9 10 11 12 TTL / F 1.8 1.7 1.7 1.8 1.8 1.8 BFL / TTL 0.11 0.11 0.11 0.11 0.11 0.11 D / H / FOV 0.033 0.033 0.035 0.032 0.034 0.035 |F3 / F4| 1.6 1.3 1.7 1.2 1.7 1.6 |F1 / F| 3.2 3.6 3.4 3.4 4.3 2.9 dn / dm 4.4 8.3 3.4 7.6 6.8 5.7 |F1 / F2| 3.9 4.4 4.2 4.2 5.2 3.6 |(R4-R5) / (R4+R5)| 7.4 7.6 3.6 5.5 3.9 3.5 |F34 / F| 2.5 6.4 2.2 70 2.1 2.7 |R1 / R2| 1.5 1.5 1.5 1.5 1.5 1.6 |R11 / R12| 0.13 3.5 0.21 2.4 0.37 1.8 T12 / TTL 0.13 0.11 0.16 0.10 0.12 0.15 T23 / TTL 0.012 0.0038 0.032 0.0037 0.0037 0.0036 |F2 / F| 0.82 0.81 0.81 0.79 0.83 0.82 |F3 / F| 0.66 0.78 0.68 0.84 0.75 0.64 |F4 / F| 0.41 0.58 0.41 0.70 0.44 0.40 |F5 / F| 1.4 5.9 3.6 3.5 9.6 6.4 |F / R1| 1.5 1.5 1.7 1.4 1.3 1.6 TTL / H / FOV 0.086 0.084 0.085 0.086 0.086 0.088

[0355] Table 37-2

[0356] The present application also provides an electronic device, which can include the optical lens according to the above embodiments of the present application and an imaging element for converting an optical image formed by the optical lens into an electrical signal. The electronic device can be a standalone electronic device such as a distance detection camera, or an imaging module integrated on a distance detection device. In addition, the electronic device can also be a standalone imaging device such as a vehicle-mounted camera, or an imaging module integrated on an auxiliary driving system.

[0357] The above description is merely preferred embodiments of the present application and a principle of applied technologies. It should be understood by those skilled in the art that the inventive scope involved in the present application is not limited to the technical solutions formed by the specific combinations of the above technical features, and should also cover other technical solutions formed by any combinations of the above technical features or equivalent features without departing from the inventive concept. For example, the technical solutions formed by mutually replacing the above features and the technical features disclosed in the present application (but not limited to) having similar functions.

Claims

1. An optical lens, characterized in that: Along the optical axis from the object side to the image side, they include: a first lens having negative optical power, wherein the object-side surface is convex and the image-side surface is concave; a second lens having positive refractive power, its object-side surface being convex and its image-side surface being convex; a third lens element having positive optical power and a convex object-side surface; a fourth lens element having negative optical power; a fifth lens having optical power; and a sixth lens having optical power, The number of lenses having optical power in the optical lens is six; The total effective focal length F of the optical lens and the curvature radius R1 of the object side surface of the first lens satisfy: 0.5≤|F / R1|≤2.5; The effective focal length F1 of the first lens and the effective focal length F2 of the second lens satisfy: |F1 / F2|≥2.

5.

2. The optical lens according to claim 1, wherein: The image-side surface of the third lens is convex or concave.

3. The optical lens according to claim 1, wherein: The object-side surface of the fourth lens is convex or concave, and the image-side surface is concave.

4. The optical lens according to claim 1, wherein: The fifth lens has positive refractive power, its object side surface is concave, and its image side surface is convex; or The fifth lens has positive refractive power, and its object-side surface is convex, and its image-side surface is convex; or The fifth lens has positive refractive power, an object-side surface thereof is convex, and an image-side surface thereof is concave.

5. The optical lens according to claim 1, wherein: The fifth lens has negative optical power, its object side surface is convex, and its image side surface is concave; or The fifth lens has negative optical power, and its object-side surface and image-side surface are concave.

6. The optical lens according to claim 1, wherein: The sixth lens has negative optical power, and its object-side surface is concave, and its image-side surface is concave; or The sixth lens has negative optical power, its object side surface is convex, and its image side surface is concave; or The sixth lens has negative optical power, an object-side surface thereof is concave, and an image-side surface thereof is convex.

7. The optical lens according to claim 1, wherein: The sixth lens has positive refractive power, and its object-side surface is convex, and its image-side surface is convex; or The sixth lens has positive refractive power, its object-side surface is convex, and its image-side surface is concave; or The sixth lens has positive refractive power, an object-side surface thereof is concave, and an image-side surface thereof is convex.

8. The optical lens according to claim 1, wherein: The third lens and the fourth lens form a cemented lens.

9. The optical lens according to claim 1, wherein: The first lens and the sixth lens are aspherical lenses.

10. The optical lens according to any one of claims 1 to 9, characterized in that: The total effective focal length F of the optical lens and the curvature radius R1 of the object side surface of the first lens satisfy: 1.3≤|F / R1|≤2.

5.

11. The optical lens according to any one of claims 1 to 9, characterized in that: The effective focal length F1 of the first lens and the effective focal length F2 of the second lens satisfy: 2.5≤|F1 / F2|≤5.

2.

12. The optical lens according to any one of claims 1 to 9, characterized in that: The effective focal length F1 of the first lens and the total effective focal length F of the optical lens satisfy: |F1 / F|≥2.

5.

13. The optical lens according to any one of claims 1 to 9, characterized in that: The effective focal length F1 of the first lens and the total effective focal length F of the optical lens satisfy: 2.5≤|F1 / F|≤4.

3.

14. The optical lens according to any one of claims 1 to 9, characterized in that: The distance TTL from the center of the object-side surface of the first lens to the imaging surface of the optical lens on the optical axis and the total effective focal length F of the optical lens satisfy: TTL / F≤2.

15. The optical lens according to any one of claims 1 to 9, characterized in that: The distance TTL from the center of the object-side surface of the first lens to the imaging surface of the optical lens on the optical axis and the total effective focal length F of the optical lens satisfy: 1≤TTL / F≤2.

16. The optical lens according to any one of claims 1 to 9, characterized in that: The effective focal length F2 of the second lens and the total effective focal length F of the optical lens satisfy: 0.7≤|F2 / F|≤2.

17. The optical lens according to any one of claims 1 to 9, characterized in that: The distance TTL from the center of the object-side surface of the first lens to the imaging surface of the optical lens on the optical axis and the distance BFL from the center of the image-side surface of the sixth lens to the imaging surface on the optical axis satisfy: 0.07≤BFL / TTL≤0.

2.

18. The optical lens according to any one of claims 1 to 9, characterized in that: The maximum field of view FOV of the optical lens, the maximum clear aperture D of the object side of the first lens corresponding to the maximum field of view of the optical lens, and the image height H corresponding to the maximum field of view of the optical lens satisfy the following conditions: 1.8≤D / H / FOV×180°≤18.

19. The optical lens according to any one of claims 1 to 9, characterized in that: The effective focal length F3 of the third lens and the effective focal length F4 of the fourth lens satisfy: 1≤|F3 / F4|≤2.

20. The optical lens according to any one of claims 1 to 9, characterized in that: The curvature radius R4 of the object-side surface of the second lens and the curvature radius R5 of the image-side surface of the second lens satisfy: 3≤|(R4-R5) / (R4+R5)|≤7.

6.

21. The optical lens according to any one of claims 1 to 9, characterized in that: The curvature radius R1 of the object-side surface of the first lens and the curvature radius R2 of the image-side surface of the first lens satisfy: 1.4≤|R1 / R2|≤3.

6.

22. The optical lens according to any one of claims 1 to 9, characterized in that: The distance TTL from the center of the object-side surface of the first lens to the imaging surface of the optical lens on the optical axis, the maximum field of view FOV of the optical lens, and the image height H corresponding to the maximum field of view of the optical lens satisfy: 9≤TTL / H / FOV×180°≤27.

23. The optical lens according to any one of claims 1 to 22, characterized in that: The optical lens satisfies at least one of the following conditions: 1.3≤|F / R1|≤2.1, 3.6≤|F1 / F2|≤5.2, 2.9≤|F1 / F|≤4.3, 1.7≤TTL / F≤1.8, 0 .7≤|F2 / F|≤0.83, 0.1≤BFL / TTL≤0.13, 5.76≤D / H / FOV×180°≤6.48, 1.2≤|F3 / F4|≤1.7, 1.4≤|R1 / R2|≤1.6, 15.12≤TTL / H / FOV×180°≤16.2, 2.1≤|F34 / F |≤70,0.12≤|R11 / R12|≤3.5,0.1≤T12 / TTL≤0.16,0.0035≤T23 / TTL≤0.033, Wherein, F1 is the effective focal length of the first lens, R1 is the curvature radius of the object side of the first lens, R2 is the curvature radius of the image side of the first lens, F is the total effective focal length of the optical lens, F2 is the effective focal length of the second lens, TTL is the distance from the center of the object side of the first lens to the imaging surface of the optical lens on the optical axis, BFL is the distance from the center of the image side of the sixth lens to the imaging surface on the optical axis, FOV is the maximum field of view of the optical lens, D is the maximum clear aperture of the object side of the first lens corresponding to the maximum field of view of the optical lens, and H is the The image height corresponding to the maximum field of view angle of the optical lens, F3 is the effective focal length of the third lens, F4 is the effective focal length of the fourth lens, R2 is the radius of curvature of the image side surface of the first lens, R11 is the radius of curvature of the object side surface of the sixth lens, R12 is the radius of curvature of the image side surface of the sixth lens, F34 is the combined focal length of the third lens and the fourth lens, T12 is the distance from the center of the image side surface of the first lens to the center of the object side surface of the second lens on the optical axis, and T23 is the distance from the center of the image side surface of the second lens to the center of the object side surface of the third lens on the optical axis.

24. An electronic device, characterized in that: The optical lens comprises the optical lens according to any one of claims 1 to 23 and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

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