Optical lens and electronic device

Abstract

The application discloses an optical lens and an electronic device comprising the same. The optical lens comprises, in order from the object side to the image side along the optical axis, a first lens with negative refractive power and a convex object side and a concave image side; a second lens with refractive power and a concave object side and a convex image side; a third lens with positive refractive power; a fourth lens with positive refractive power and a convex object side and a convex image side; a fifth lens with positive refractive power and a convex object side and a convex image side; a sixth lens with negative refractive power; and a seventh lens with refractive power. The number of lenses with refractive power in the optical lens is seven. The optical lens satisfies the following conditions: |F / R11|≤0.4; 1.4337≤|F3 / F4|≤2.888; -1.0≤R12 / R21≤-0.652; and 3.13≤R11 / R12≤6.0, wherein F is the overall focal length of the optical lens, R11 is the curvature radius of the object side of the first lens, F3 is the focal length of the third lens, F4 is the focal length of the fourth lens, R12 is the curvature radius of the image side of the first lens, and R21 is the curvature radius of the object side of the second lens.

Description

[0001] Divisional Application Declaration

[0002] This application is a divisional application of the China Invention Patent Application No. 202010461914.3 filed on May 27, 2020 and entitled "Optical Lens and Electronic Device". TECHNICAL FIELD

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

[0004] In recent years, the automobile auxiliary driving system has developed rapidly, and the vehicle-mounted optical lens, as the eyes of the automobile to obtain external information, plays an irreplaceable role. In order to obtain more accurate information, the system needs to be matched with a large chip with higher resolution, so the resolution requirement of the optical lens itself is also higher and higher. In order to meet the requirement of higher imaging quality, more lens structures are often selected, which will lead to the increase of cost and also seriously affect the miniaturization of the lens.

[0005] In addition, for safety considerations, the vehicle-mounted optical lens applied in the automatic driving field has a high requirement for stability and needs to be able to cope with various harsh environments to avoid significant performance degradation of the lens in different environments.

[0006] Therefore, the market currently needs an optical lens that can match a large chip, has high resolution, and also has low cost, miniaturization, low distortion, good temperature performance and other characteristics, which can meet the requirements of automatic driving applications. SUMMARY

[0007] One aspect of the present application provides an optical lens, which can comprise, in order from the object side to the image side along the optical axis, a first lens having a negative refractive 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 refractive power, an object side surface of which is a concave surface and an image side surface of which is a convex surface; a third lens having a positive refractive power; a fourth lens having a positive refractive power, an object side surface of which is a convex surface and an image side surface of which is a convex surface; a fifth lens having a positive refractive power, an object side surface of which is a convex surface and an image side surface of which is a convex surface; a sixth lens having a negative refractive power; and a seventh lens having a positive refractive power, wherein the fifth lens and the sixth lens form a cemented lens.

[0008] In one embodiment, the object side surface of the third lens can be a convex surface and the image side surface of the third lens can be a concave surface.

[0009] In one embodiment, the object side surface of the third lens can be a convex surface and the image side surface of the third lens can be a convex surface.

[0010] In an embodiment, the object-side surface of the sixth lens can be a concave surface, and the image-side surface of the sixth lens can be a concave surface.

[0011] In an embodiment, the object-side surface of the sixth lens can be a concave surface, and the image-side surface of the sixth lens can be a convex surface.

[0012] In an embodiment, the object-side surface of the seventh lens can be a convex surface, and the image-side surface of the seventh lens can be a convex surface.

[0013] In an embodiment, the object-side surface of the seventh lens can be a convex surface, and the image-side surface of the seventh lens can be a concave surface.

[0014] In an embodiment, the total track length TTL of the optical lens and the overall focal length value F of the optical lens can satisfy: TTL / F≤10.

[0015] In an embodiment, the maximum field of view FOV of the optical lens, the maximum entrance pupil diameter D of the object-side surface 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 can satisfy: D / H / FOV≤0.02.

[0016] In an embodiment, the optical back focal length BFL of the optical lens and the lens group length TL of the optical lens can satisfy: BFL / TL≥0.1.

[0017] In an embodiment, the overall focal length value F 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 can satisfy: 50≤(FOV×F) / H≤70.

[0018] In an embodiment, the focal length value F3 of the third lens and the focal length value F4 of the fourth lens can satisfy: |F3 / F4|≥0.6.

[0019] In an embodiment, the focal length value F4 of the fourth lens and the focal length value F5 of the fifth lens can satisfy: 0.5≤|F4 / F5|≤2.5.

[0020] In an embodiment, the focal length value F5 of the fifth lens and the focal length value F6 of the sixth lens can satisfy: 0.5≤|F5 / F6|≤3.5.

[0021] In an embodiment, the overall focal length value F of the optical lens and the radius of curvature R11 of the object-side surface of the first lens can satisfy: |F / R11|≤0.5.

[0022] In an embodiment, the radius of curvature R12 of the image-side surface of the first lens and the radius of curvature R21 of the object-side surface of the second lens can satisfy: R12 / R21≥-1.0.

[0023] In an embodiment, the fourth lens has a positive refractive power, and a convex object side surface and a convex image side surface.

[0024] In an embodiment, the optical lens has a total track length TTL, and the second lens and the third lens have a separation distance d4 on the optical axis, and d4 / TTL≤0.004.

[0025] In an embodiment, the first lens has a positive refractive power, and a convex object side surface and a convex image side surface.

[0026] In an embodiment, the first lens has a positive refractive power, and a convex object side surface and a convex image side surface.

[0027] In an embodiment, the optical lens has a total track length TTL, and the second lens and the third lens have a separation distance d4 on the optical axis, and d4 / TTL≤0.004.

[0028] Another aspect of the present application provides an optical lens, which can include, in order from an object side to an image side along an optical axis, a first lens having a convex object side surface and a concave image side surface, a second lens having a concave object side surface and a convex image side surface, a third lens, a fourth lens having a convex object side surface and a convex image side surface, a fifth lens having a convex object side surface and a convex image side surface, a sixth lens, a seventh lens, and the fifth lens and the sixth lens forming a cemented lens. The optical lens has a total track length TTL, and the second lens and the third lens have a separation distance d4 on the optical axis, and d4 / TTL≤0.004.

[0029] In an embodiment, the third lens has a positive refractive power, and a convex object side surface and a concave image side surface.

[0030] In an embodiment, the third lens has a positive refractive power, and a convex object side surface and a convex image side surface.

[0031] In an embodiment, the sixth lens has a negative refractive power, and a concave object side surface and a concave image side surface.

[0032] In an embodiment, the sixth lens has a negative refractive power, and a concave object side surface and a convex image side surface.

[0033] In an embodiment, the seventh lens has a positive refractive power, and a convex object side surface and a convex image side surface.

[0034] In an embodiment, the seventh lens can have a positive refractive power, the object side surface of the seventh lens can be convex, and the image side surface of the seventh lens can be concave.

[0035] In an embodiment, the total track length TTL of the optical lens and the overall focal length F of the optical lens can satisfy: TTL / F≤10.

[0036] In an embodiment, the maximum field of view FOV of the optical lens, the maximum entrance pupil diameter D of the object side surface 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 can satisfy: D / H / FOV≤0.02.

[0037] In an embodiment, the optical back focal length BFL of the optical lens and the lens group length TL of the optical lens can satisfy: BFL / TL≥0.1.

[0038] In an embodiment, the overall focal length F 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 can satisfy: 50≤(FOV×F) / H≤70.

[0039] In an embodiment, the focal length F3 of the third lens and the focal length F4 of the fourth lens can satisfy: |F3 / F4|≥0.6.

[0040] In an embodiment, the focal length F4 of the fourth lens and the focal length F5 of the fifth lens can satisfy: 0.5≤|F4 / F5|≤2.5.

[0041] In an embodiment, the focal length F5 of the fifth lens and the focal length F6 of the sixth lens can satisfy: 0.5≤|F5 / F6|≤3.5.

[0042] In an embodiment, the overall focal length F of the optical lens and the radius of curvature R11 of the object side surface of the first lens can satisfy: |F / R11|≤0.5.

[0043] In an embodiment, the radius of curvature R12 of the image side surface of the first lens and the radius of curvature R21 of the object side surface of the second lens can satisfy: R12 / R21≥-1.0.

[0044] In an embodiment, the radius of curvature R41 of the object side surface of the fourth lens and the radius of curvature R42 of the image side surface of the fourth lens can satisfy: R41 / R42≤-0.2.

[0045] In an embodiment, the interval distance d4 of the second lens and the third lens on the optical axis and the total track length TTL of the optical lens satisfy: d4 / TTL≤0.004.

[0046] In an embodiment, the radius of curvature R11 of the object side surface of the first lens and the radius of curvature R12 of the image side surface of the first lens can satisfy: 2.0≤R11 / R12≤8.0.

[0047] In an embodiment, the integral focal length value F of the optical lens and the image height H corresponding to the maximum field angle of view of the optical lens can satisfy: F / H≤0.55.

[0048] Another aspect of the present application provides an electronic device. The electronic device comprises 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.

[0049] The optical lens provided by the present application adopts a plurality of lenses, for example, the first lens to the seventh lens, at least one of the beneficial effects of high resolution, miniaturization, small front end, large field angle, small distortion, low cost, etc. of the optical lens is realized by optimizing the shape of the lens, reasonably distributing the refractive power of each lens, and forming a cemented lens. BRIEF DESCRIPTION OF DRAWINGS

[0050] Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments, taken in conjunction with the accompanying drawings. In the drawings:

[0051] Figure 1 A structure schematic diagram of an optical lens according to Embodiment 1 of the present application is shown;

[0052] Figure 2 A structure schematic diagram of an optical lens according to Embodiment 2 of the present application is shown;

[0053] Figure 3 A structure schematic diagram of an optical lens according to Embodiment 3 of the present application is shown;

[0054] Figure 4 A structure schematic diagram of an optical lens according to Embodiment 4 of the present application is shown;

[0055] Figure 5 A structure schematic diagram of an optical lens according to Embodiment 5 of the present application is shown;

[0056] Figure 6 A structure schematic diagram of an optical lens according to Embodiment 6 of the present application is shown;

[0057] Figure 7 A structure schematic diagram of an optical lens according to Embodiment 7 of the present application is shown;

[0058] Figure 8 A structure schematic diagram of an optical lens according to Embodiment 8 of the present application is shown;

[0059] Figure 9A structural diagram of an optical lens according to Embodiment 9 of the present application is shown; and

[0060] Figure 10 A structural diagram of an optical lens according to Embodiment 10 of the present application is shown. DETAILED DESCRIPTION

[0061] 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 drawings. It is to be understood that these detailed descriptions are merely exemplary of the application and are not intended to limit the scope of the application in any way. Throughout this document, same reference numerals are used to represent same elements in the various figures. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0062] It should be noted that, in the present specification, the expressions first, second, third and the like are used only to distinguish one feature from another feature, and do not denote any limitation on the features. Thus, 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.

[0063] 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 surface or aspherical surface shown in the drawings is shown by way of example. That is, the shape of the spherical surface or aspherical surface is not limited to the shape of the spherical surface or aspherical surface shown in the drawings. The drawings are merely examples and are not drawn to scale.

[0064] In the present specification, 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.

[0065] It should also be understood that the words "comprise", "comprising", "include", "including", and / or "contain", when used in this specification, specify the presence of stated features, elements, and / or components, but do not preclude the presence or addition of one or more other features, elements, components, and / or groups thereof. Furthermore, when describing the embodiments of the present application, the use of "may" means one or more embodiments of the present application. Also, the word "exemplary" is intended to mean an example or an illustration.

[0066] 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 overly formal sense unless expressly so defined herein.

[0067] It should be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0068] The features, principles, and other aspects of the present application are described in detail below.

[0069] The optical lens according to the exemplary embodiments of the present application can include, for example, seven lenses with optical power, i.e., a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The seven lenses are arranged in order along an optical axis from an object side to an image side.

[0070] The optical lens according to the exemplary embodiments of the present application can further include a light sensing element disposed at the imaging plane. Optionally, the light sensing element disposed at the imaging plane can be a charge-coupled device (CCD) or a complementary metal-oxide-semiconductor device (CMOS).

[0071] The first lens can have negative optical power, which can improve the imaging quality of the optical lens, avoid excessive divergence of light rays on the object side, and be conducive to controlling the aperture of the rear lens. The first lens is arranged in a meniscus shape, the object side surface of which can be convex, and the image side surface of which can be concave, which can collect as much light as possible in a large field of view and enter the rear system, thereby effectively increasing the light flux and achieving a large overall field of view. At the same time, the object side surface of the first lens is arranged as a convex surface, which is conducive to the sliding of water droplets in actual use environments (such as rainy and snowy weather), and can effectively reduce the influence of, for example, harsh environments on imaging.

[0072] The second lens can have positive optical power or negative optical power, which is conducive to further converging or diverging light rays, and adjusting the light rays to reduce the chromatic aberration of the system. The object side surface and the image side surface of the second lens are preferably arranged as aspherical surfaces to improve the resolution quality of the optical lens.

[0073] The third lens can have positive optical power, which is conducive to converging light rays, adjusting the light rays to smoothly transition to the rear lens, and balancing the spherical aberration introduced by the first and second lenses.

[0074] The fourth lens can have positive focal power, which is conducive to converging the light rays and adjusting the light rays to smoothly transition to the rear lens. The object side and image side of the fourth lens are preferably arranged as aspheric mirrors to further improve the resolving power of the optical lens.

[0075] The fifth lens can have positive focal power, and the sixth lens can have negative focal power. The fifth lens and the sixth lens are combined into a cemented lens.

[0076] As known by those skilled in the art, the cemented lens can be used to minimize or eliminate chromatic aberration. The use of the cemented lens in the optical lens can improve the image quality and reduce the reflection loss of light energy, thereby improving the clarity of the lens imaging. In addition, the use of the cemented lens can also simplify the assembly procedure in the lens manufacturing process.

[0077] By cementing the image side of the fifth lens with the object side of the sixth lens to form a cemented lens, the light rays passing through the fourth lens can be smoothly transitioned to the imaging surface. This helps to reduce the air gap between the lenses and the overall length of the system. Furthermore, it can fully correct various aberrations in the optical system, further improve the resolution of the optical lens, and optimize the optical performance such as distortion and chief ray angle under the premise of a more compact structure of the optical system.

[0078] The cemented lens can achieve the following beneficial effects: it helps to reduce the air gap between the fifth and sixth lenses and the overall length of the optical system; it reduces the assembly components between the fifth and sixth lenses, reduces the processing procedures of the optical lens, and reduces the manufacturing cost of the lens; it reduces the tolerance sensitivity problems of the lens unit caused by tilting and eccentricity during assembly; it reduces the light loss caused by reflection between the lenses, improves the illumination of the optical lens; and further reduces the field curvature of the optical system and corrects the off-axis point aberration of the system.

[0079] The seventh lens can have positive focal power, which can smoothly transition the light rays passing through the cemented lens to the imaging surface, reduce the overall length of the optical lens, correct the astigmatism and field curvature of the system, and improve the resolving power of the optical lens. The object side and image side of the seventh lens are preferably arranged as aspheric mirrors to further improve the resolving power of the optical lens.

[0080] Optionally, a diaphragm for limiting the light beam can be arranged between the third lens and the fourth lens to further improve the imaging quality of the lens. When the diaphragm is arranged between the third lens and the fourth lens, it can be conducive to the effective convergence of the light rays entering the optical system, thereby reducing the overall length of the optical system and the front aperture of the lens. However, it should be noted that the position of the diaphragm disclosed herein is only an example and not a limitation; in alternative embodiments, the diaphragm can also be arranged at other positions as needed.

[0081] Optionally, the optical lens further comprises a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface.

[0082] In an example embodiment, at least one of the mirror surfaces of the lenses is an aspherical mirror surface, i.e., at least one of the mirror surfaces of the object side surface of the first lens to the image side surface of the seventh lens is an aspherical mirror surface. The aspherical lens is characterized in that the curvature continuously changes from the center of the lens to the periphery of the lens. Unlike the spherical lens having a constant curvature from the center of the lens to the periphery of the lens, the aspherical lens has a better curvature radius characteristic, which has the advantages of improving the distortion aberration and improving the astigmatism aberration. After using the aspherical lens, the aberration occurring during imaging can be eliminated as much as possible, thereby improving the imaging quality. Optionally, at least one of the object side surface and the image side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens is an aspherical mirror surface. Optionally, the object side surface and the image side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens are aspherical mirror surfaces.

[0083] In an example embodiment, the total optical length TTL of the optical lens and the total focal length F of the optical lens satisfy TTL / F≤10. For example, TTL / F≤9. By constraining the ratio of the total optical length of the system to the total focal length within a reasonable numerical range, the total length of the optical lens can be effectively reduced, and the miniaturization of the optical lens can be realized.

[0084] In an example embodiment, the maximum field of view FOV of the optical lens, the maximum entrance pupil diameter D of the object side surface 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 D / H / FOV≤0.02. For example, D / H / FOV≤0.015. Reasonably controlling the mutual relationship among the maximum field of view of the optical lens, the maximum entrance pupil diameter 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 that the front end of the optical lens has a small aperture, which is conducive to the miniaturization of the optical lens; and can shorten the total optical length of the lens, reduce the sensitivity of the lens to the Modulation Transfer Function, improve the production yield of the lens, and reduce the production cost.

[0085] In an example embodiment, the optical back focal length BFL of the optical lens and the lens group length TL of the optical lens can satisfy: BFL / TL≥0.1. For example, BFL / TL≥0.11. By constraining the ratio of the optical back focal length of the optical lens and the lens group length of the optical lens within a reasonable numerical range, it is beneficial to realize the back focal length on the basis of miniaturization, and it is beneficial to the assembly of the module.

[0086] In an example embodiment, the total focal length value F of the optical lens, the maximum field of view angle FOV of the optical lens, and the image height H corresponding to the maximum field of view angle of the optical lens can satisfy: 50≤(FOVxF) / H≤70. For example, 55≤(FOVxF) / H≤65. Reasonably controlling the mutual relationship between the total focal length value of the optical lens, the maximum field of view angle of the optical lens, and the image height corresponding to the maximum field of view angle of the optical lens can realize the large-angle resolution of the optical lens; it is helpful to meet the small distortion and large field of view angle of the optical lens, and improve the overall effect of the optical system.

[0087] In an example embodiment, the focal length value F3 of the third lens and the focal length value F4 of the fourth lens can satisfy: |F3 / F4|≥0.6. For example, |F3 / F4|≥0.7. By constraining the ratio of the focal length values of the third lens and the fourth lens within a reasonable numerical range, the adjacent third lens and the fourth lens are very close, which is beneficial to the smooth transition of light to the rear imaging surface, and improves the resolving power of the optical lens.

[0088] In an example embodiment, the focal length value F4 of the fourth lens and the focal length value F5 of the fifth lens can satisfy: 0.5≤|F4 / F5|≤2.5. For example, 1.0≤|F4 / F5|≤2.0. By constraining the ratio of the focal length values of the fourth lens and the fifth lens within a reasonable numerical range, the adjacent fourth lens and the fifth lens are very close, which is beneficial to the smooth transition of light to the rear imaging surface, and improves the resolving power of the optical lens.

[0089] In an example embodiment, the focal length value F5 of the fifth lens and the focal length value F6 of the sixth lens can satisfy: 0.5≤|F5 / F6|≤3.5. For example, 1.0≤|F5 / F6|≤3.0. By constraining the ratio of the focal length values of the fifth lens and the sixth lens within a reasonable numerical range, the adjacent fifth lens and the sixth lens are very close, which is beneficial to the smooth transition of light to the rear imaging surface, and improves the resolving power of the optical lens.

[0090] In an example embodiment, the whole set focal length value F of the optical lens and the radius of curvature R11 of the object side surface of the first lens can satisfy: |F / R11|≤0.5. For example, |F / R11|≤0.4. By restricting the ratio of the whole set focal length value of the optical lens and the radius of curvature of the object side surface of the first lens within a reasonable numerical range, the problem of the radius of curvature of the object side surface of the first lens being too small can be avoided, and the aberration generated by the system when the light is incident can be effectively avoided, and the production and processing of the first lens are facilitated.

[0091] In an example embodiment, the radius of curvature R12 of the image side surface of the first lens and the radius of curvature R21 of the object side surface of the second lens can satisfy: R12 / R21≥-1.0. For example, R12 / R21≥-0.9. By restricting the ratio of the radius of curvature of the image side surface of the first lens and the object side surface of the second lens within a reasonable numerical range, the aberration of the optical system can be corrected, and when the light emitted from the first lens is incident on the object side surface of the second lens, the incident light is relatively gentle, thereby reducing the tolerance sensitivity of the optical lens.

[0092] In an example embodiment, the radius of curvature R41 of the object side surface of the fourth lens and the radius of curvature R42 of the image side surface of the fourth lens can satisfy: R41 / R42≤-0.2. For example, R41 / R42≤-0.25. By restricting the ratio of the radius of curvature of the object side surface and the image side surface of the fourth lens within a reasonable numerical range, the tolerance sensitivity of the fourth lens can be reduced, and the assembly of the optical lens is facilitated.

[0093] In an example embodiment, the whole set focal length value F 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 can satisfy: (H-FOVxF) / FOVxF≤-0.4. For example, (H-FOVxF) / FOVxF≤-0.45. Reasonably controlling the mutual relationship among the whole set focal length value of the optical lens, 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 that the focal length of the lens is increased while the field of view and the imaging surface size of the optical lens remain unchanged, and the imaging effect of the central region of the imaging surface of the lens is highlighted.

[0094] In an example embodiment, the interval distance d4 of the second lens and the third lens on the optical axis and the total optical length TTL of the optical lens can satisfy: d4 / TTL≤0.004. For example, d4 / TTL≤0.0035. By restricting the ratio of the interval distance of the second lens and the third lens on the optical axis and the total optical length of the optical lens within a reasonable numerical range, the second lens and the third lens can be relatively close to each other, which is beneficial to the smooth transition of light and improves the resolution quality of the optical lens.

[0095] In an exemplary embodiment, the radius of curvature R11 of the object side surface of the first lens and the radius of curvature R12 of the image side surface of the first lens can satisfy: 2.0≤R11 / R12≤8.0. For example, 3.2≤R11 / R12≤6.0. By restricting the ratio of the radius of curvature of the object side surface and the image side surface of the first lens within a reasonable numerical range, a special-shaped first lens can be set to improve the resolving power of the optical lens.

[0096] In an exemplary embodiment, the total focal length value F of the optical lens and the image height H corresponding to the maximum field angle of the optical lens can satisfy: F / H≤0.55. For example, F / H≤0.50. By restricting the ratio of the total focal length value of the optical lens and the image height corresponding to the maximum field angle of the optical lens within a reasonable numerical range, the resolving quality of the optical lens is improved.

[0097] The optical lens according to the above embodiments of the present application can employ multiple lenses, for example, seven lenses as described above. By reasonably allocating the optical power, surface shape, focal length value, and radius of curvature of each lens, the incident light can be effectively converged, the optical total length of the optical lens can be shortened, and the processability of the optical lens can be improved, so that the optical lens is more conducive to production and processing. The optical lens according to the above embodiments of the present application can have characteristics such as high resolution, low cost, long back focus, good temperature performance, miniaturization, large aperture, small front-end caliber, simple structure by reasonable use of cemented components, and the like.

[0098] However, those skilled in the art will understand that the number of lenses constituting the optical 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 seven lenses are described as an example in the embodiments, the optical lens is not limited to including seven lenses. If necessary, the optical lens can also include other numbers of lenses.

[0099] The specific embodiments of the optical lens applicable to the above embodiments are further described below with reference to the accompanying drawings.

[0100] Example 1

[0101] The following refers to Figure 1 An optical lens according to Embodiment 1 of the present application is described. Figure 1 is a structural schematic diagram showing the optical lens according to Embodiment 1 of the present application.

[0102] As Figure 1 shown, the optical lens sequentially includes, 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 stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7.

[0103] 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 spherical surfaces.

[0104] The second lens L2 is a meniscus lens with negative focal power, the object side surface S3 is a concave surface, the image side surface S4 is a convex surface, and both the object side surface S3 and the image side surface S4 of the second lens L2 are aspherical surfaces.

[0105] The third lens L3 is a meniscus lens with positive focal power, the object side surface S5 is a convex surface, the image side surface S6 is a concave surface, and both the object side surface S5 and the image side surface S6 of the third lens L3 are spherical surfaces.

[0106] The fourth lens L4 is a double convex lens with positive focal power, the object side surface S8 is a convex surface, the image side surface S9 is a convex surface, and both the object side surface S8 and the image side surface S9 of the fourth lens L4 are spherical surfaces.

[0107] The fifth lens L5 is a double convex lens with positive focal power, the object side surface S10 is a convex surface, the image side surface S11 is a convex surface, and both the object side surface S10 and the image side surface S11 of the fifth lens L5 are spherical surfaces.

[0108] 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 spherical surfaces.

[0109] The seventh lens L7 is a double convex lens with positive focal power, the object side surface S13 is a convex surface, the image side surface S14 is a convex surface, and both the object side surface S13 and the image side surface S14 of the seventh lens L7 are aspherical surfaces.

[0110] In this embodiment, the fifth lens L5 and the sixth lens L6 are combined into a cemented lens.

[0111] Optionally, the optical lens can further include a filter L8 and / or a protective glass L8 with an object side surface S15 and an image side surface S16. The filter L8 can be used to correct color deviation, and the protective glass L8 can be used to protect the image sensor chip located at the imaging surface IMA. The light from the object sequentially passes through the surfaces S1 to S16 and is finally imaged on the imaging surface IMA.

[0112] In the optical lens of this embodiment, the stop STO can be arranged between the third lens L3 and the fourth lens L4 to further improve the imaging quality.

[0113] Table 1 shows the basic parameter table of the optical lens of Embodiment 1, wherein the units of the curvature radius and the thickness / distance are millimeters (mm).

[0114]

[0115] Table 1

[0116] In the present embodiment, the object side surface and the image side surface of the second lens L2 and the seventh lens L7 are aspherical surfaces, and the surface type Z of each aspherical surface can be defined by, but not limited to, the following aspherical surface formula:

[0117]

[0118] wherein Z is the sag of the aspherical surface at a position with a height of h along the optical axis 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 in Table 1 above); k is the conic coefficient; A, B, C, D, E, F, etc. are high-order coefficients. Table 2 below shows the conic coefficient k and the high-order coefficients A, B, C, D, E, F and G of the aspherical surface S3, S4, S13 and S14 of the aspherical surface lens in Embodiment 1.

[0119]

[0120]

[0121] Table 2

[0122] Table 3 below gives the optical length TTL (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) of the optical lens of Embodiment 1, the overall focal length value F of the optical lens, the maximum clear aperture D of the object side surface S1 of the first lens L1 corresponding to the maximum field of view FOV of the optical lens, the image height H corresponding to the maximum field of view FOV of the optical lens, the maximum field of view FOV 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 surface S14 of the seventh lens L7 to the imaging surface IMA of the optical lens), the lens group length TL of the optical lens (i.e., the distance on the optical axis from the center of the object side surface S1 of the first lens L1 to the center of the image side surface S14 of the seventh lens L7), the focal length value F3 of the third lens L3, the focal length value F4 of the fourth lens L4, the focal length value F5 of the fifth lens L5, and the focal length value F6 of the sixth lens L6.

[0123] TTL (mm) 31.0892 TL (mm) 26.7937 F (mm) 4.0045 F3 (mm) 18.4408 D (mm) 12.4400 F4 (mm) 12.8622 H (mm) 9.0844 F5 (mm) 8.9731 FOV (°) 140 F6 (mm) -4.2489 BFL (mm) 4.2954

[0124] Table 3

[0125] Example 2

[0126] The following refers to Figure 2 An optical lens according to Embodiment 2 of the present application is described. Figure 2 is a structural schematic diagram showing an optical lens according to Embodiment 2 of the present application.

[0127] As shown in FIG. 1, 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 stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7. Figure 2

[0128] 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 spherical surfaces.

[0129] The second lens L2 is a meniscus lens with negative focal power, the object side surface S3 is a concave surface, the image side surface S4 is a convex surface, and both the object side surface S3 and the image side surface S4 of the second lens L2 are aspherical surfaces.

[0130] The third lens L3 is a meniscus lens with positive focal power, the object side surface S5 is a convex surface, the image side surface S6 is a concave surface, and both the object side surface S5 and the image side surface S6 of the third lens L3 are spherical surfaces.

[0131] The fourth lens L4 is a double convex lens with positive focal power, the object side surface S8 is a convex surface, the image side surface S9 is a convex surface, and both the object side surface S8 and the image side surface S9 of the fourth lens L4 are spherical surfaces.

[0132] The fifth lens L5 is a double convex lens with positive focal power, the object side surface S10 is a convex surface, the image side surface S11 is a convex surface, and both the object side surface S10 and the image side surface S11 of the fifth lens L5 are spherical surfaces.

[0133] 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 spherical surfaces.

[0134] The seventh lens L7 is a double convex lens with positive focal power, the object side surface S13 is a convex surface, the image side surface S14 is a convex surface, and both the object side surface S13 and the image side surface S14 of the seventh lens L7 are aspherical surfaces.

[0135] In this embodiment, the fifth lens L5 and the sixth lens L6 are combined into a cemented lens.

[0136] Optionally, the optical lens can further comprise a filter L8 and / or a protective glass L8 having an object side surface S15 and an image side surface S16. The filter L8 can be used to correct color deviation, and the protective glass L8 can be used to protect the image sensor chip located at the imaging surface IMA. The light from the object sequentially passes through the surfaces S1 to S16 and is finally imaged on the imaging surface IMA.

[0137] ​In the optical lens of the embodiment, the diaphragm STO can be arranged between the third lens L3 and the fourth lens L4 to further improve the imaging quality.

[0138] Table 4 shows a basic parameter table of the optical lens of embodiment 2, wherein the units of the radius of curvature and the thickness / distance are millimeters (mm).

[0139]

[0140] Table 4

[0141] The following table 5 shows the conic coefficients k and the respective high-order term coefficients A, B, C, D, E, F and G of the aspherical lens surfaces S3, S4, S13 and S14 that can be used in embodiment 2.

[0142] Surface No. k A B C D E F G S3 0.5353 -7.5210E-06 7.3668E-06 -8.6720E-07 1.6880E-07 -1.2034E-08 4.3093E-10 -5.7835E-12 S4 -0.8896 -4.1659E-06 6.1399E-07 1.3109E-07 -9.3904E-09 5.2493E-10 -1.6138E-11 2.1193E-13 S13 -3.2178 2.3653E-04 1.9404E-05 -9.5573E-07 4.4926E-07 -5.8573E-08 2.3132E-09 -3.8477E-11 S14 -132.3455 -1.1984E-03 2.0734E-04 -1.6244E-05 6.7567E-07 4.4360E-08 -5.4141E-09 1.5930E-10

[0143] Table 5

[0144] The following table 6 gives the 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 plane IMA) of the optical lens of embodiment 2, the overall focal length value F of the optical lens, the maximum clear aperture D of the object side S1 of the first lens L1 corresponding to the maximum field of view FOV of the optical lens, the image height H corresponding to the maximum field of view FOV of the optical lens, the maximum field of view FOV 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 S14 of the seventh lens L7 to the imaging plane IMA of the optical lens), the lens group length TL (i.e. the distance on the optical axis from the center of the object side S1 of the first lens L1 to the center of the image side S14 of the seventh lens L7), the focal length value F3 of the third lens L3, the focal length value F4 of the fourth lens L4, the focal length value F5 of the fifth lens L5 and the focal length value F6 of the sixth lens L6.

[0145] TTL (mm) 31.3877 TL (mm) 26.6798 F (mm) 4.0583 F3 (mm) 19.5887 D (mm) 12.8407 F4 (mm) 12.5236 H (mm) 9.0290 F5 (mm) 8.9401 FOV (°) 140 F6 (mm) -4.2939 BFL (mm) 4.7079

[0146] Table 6

[0147] Example 3

[0148] The following refers to Figure 3 An 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.

[0149] As Figure 3 shown, 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 diaphragm STO, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7.

[0150] 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 the object side S1 and the image side S2 of the first lens L1 are both spherical surfaces.

[0151] The second lens L2 is a meniscus lens with positive focal power, the object side S3 is a concave surface, the image side S4 is a convex surface, and the object side S3 and the image side S4 of the second lens L2 are both aspherical surfaces.

[0152] The third lens L3 is a double convex lens with positive focal power, the object side S5 is a convex surface, the image side S6 is a convex surface, and the object side S5 and the image side S6 of the third lens L3 are both spherical surfaces.

[0153] The fourth lens L4 is a double convex lens with positive focal power, the object side S8 is a convex surface, the image side S9 is a convex surface, and the object side S8 and the image side S9 of the fourth lens L4 are both spherical surfaces.

[0154] The fifth lens L5 is a double convex lens with positive focal power, the object side S10 is a convex surface, the image side S11 is a convex surface, and the object side S10 and the image side S11 of the fifth lens L5 are both spherical surfaces.

[0155] 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 the object side S11 and the image side S12 of the sixth lens L6 are both spherical surfaces.

[0156] The seventh lens L7 is a double convex lens with positive focal power, the object side S13 is a convex surface, the image side S14 is a convex surface, and the object side S13 and the image side S14 of the seventh lens L7 are both aspherical surfaces.

[0157] In the embodiment, the fifth lens L5 and the sixth lens L6 are combined into a cemented lens.

[0158] Optionally, the optical lens can further include a filter L8 and / or a protective glass L8 with an object side S15 and an image side S16. The filter L8 can be used to correct color deviation, and the protective glass L8 can be used to protect the image sensor chip located at the imaging surface IMA. The light from the object sequentially passes through the surfaces S1 to S16 and is finally imaged on the imaging surface IMA.

[0159] In the optical lens of the embodiment, the stop STO can be arranged between the third lens L3 and the fourth lens L4 to further improve the imaging quality.

[0160] Table 7 shows the basic parameter table of the optical lens of embodiment 3, wherein the units of the curvature radius and the thickness / distance are millimeters (mm).

[0161]

[0162]

[0163] Table 7

[0164] The following Table 8 shows the conic constant k and the respective higher order coefficients A, B, C, D, E, F and G of the aspherical lens surfaces S3, S4, S13 and S14 used in the optical lens according to Example 3.

[0165] Surface No. k A B C D E F G S3 1.4743 -1.4187E-04 9.3990E-06 -1.4293E-06 2.3980E-07 -1.9000E-08 7.5766E-10 -1.1690E-11 S4 -1.0840 -5.6427E-05 3.4074E-06 2.7449E-08 -1.2560E-08 7.9147E-10 -2.0674E-11 2.0481E-13 S13 -3.0925 1.1789E-04 3.2921E-05 -4.4977E-06 9.2674E-07 -8.9974E-08 4.4465E-09 -8.6607E-11 S14 -221.9613 -2.6637E-03 2.6839E-04 -1.8173E-05 4.4759E-07 5.2332E-08 -4.2957E-09 1.0208E-10

[0166] Table 8

[0167] The following Table 9 gives the total track length TTL (i.e. the distance on the optical axis from the center of the object side surface S1 of the first lens L1 to the image plane IMA of the optical lens), the total focal length value F of the optical lens, the maximum entrance pupil diameter D of the object side surface S1 of the first lens L1 corresponding to the maximum field of view FOV of the optical lens, the image height H corresponding to the maximum field of view FOV of the optical lens, the maximum field of view FOV of the optical lens, the back focal length BFL of the optical lens (i.e. the distance on the optical axis from the center of the image side surface S14 of the seventh lens L7 to the image plane IMA of the optical lens), the lens group length TL of the optical lens (i.e. the distance on the optical axis from the center of the object side surface S1 of the first lens L1 to the center of the image side surface S14 of the seventh lens L7), the focal length value F3 of the third lens L3, the focal length value F4 of the fourth lens L4, the focal length value F5 of the fifth lens L5 and the focal length value F6 of the sixth lens L6 of the optical lens according to Example 3.

[0168] TTL (mm) 32.0001 TL (mm) 27.3678 F (mm) 4.00353 F3 (mm) 20.888 D (mm) 14.0204 F4 (mm) 12.3 H (mm) 9.34951 F5 (mm) 10.485 FOV (°) 140 F6 (mm) -4.6207 BFL (mm) 4.6323

[0169] Table 9

[0170] Example 4

[0171] The following refers to Figure 4 An optical lens according to Example 4 of the present application is described. Figure 4 is a schematic diagram showing the structure of an optical lens according to Example 4 of the present application.

[0172] 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 stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7.

[0173] The first lens L1 is a meniscus lens with negative refractive power, the object side surface S1 of which is convex and the image side surface S2 of which is concave, and both the object side surface S1 and the image side surface S2 of the first lens L1 are spherical surfaces.

[0174] The second lens L2 is a meniscus lens with positive refractive power, the object side S3 is a concave surface, the image side S4 is a convex surface, and the object side S3 and the image side S4 of the second lens L2 are both aspherical surfaces.

[0175] The third lens L3 is a double convex lens with positive refractive power, the object side S5 is a convex surface, the image side S6 is a convex surface, and the object side S5 and the image side S6 of the third lens L3 are both spherical surfaces.

[0176] The fourth lens L4 is a double convex lens with positive refractive power, the object side S8 is a convex surface, the image side S9 is a convex surface, and the object side S8 and the image side S9 of the fourth lens L4 are both spherical surfaces.

[0177] The fifth lens L5 is a double convex lens with positive refractive power, the object side S10 is a convex surface, the image side S11 is a convex surface, and the object side S10 and the image side S11 of the fifth lens L5 are both spherical surfaces.

[0178] The sixth lens L6 is a double concave lens with negative refractive power, the object side S11 is a concave surface, the image side S12 is a concave surface, and the object side S11 and the image side S12 of the sixth lens L6 are both spherical surfaces.

[0179] The seventh lens L7 is a double convex lens with positive refractive power, the object side S13 is a convex surface, the image side S14 is a convex surface, and the object side S13 and the image side S14 of the seventh lens L7 are both aspherical surfaces.

[0180] In the embodiment, the fifth lens L5 and the sixth lens L6 are combined into a cemented lens.

[0181] Optionally, the optical lens can further include a filter L8 and / or a protective glass L8 with an object side S15 and an image side S16. The filter L8 can be used to correct color deviation, and the protective glass L8 can be used to protect the image sensor chip located at the imaging surface IMA. The light from the object sequentially passes through the surfaces S1 to S16 and is finally imaged on the imaging surface IMA.

[0182] In the optical lens of the embodiment, the stop STO can be arranged between the third lens L3 and the fourth lens L4 to further improve the imaging quality.

[0183] Table 10 shows the basic parameter table of the optical lens of embodiment 4, wherein the units of the curvature radius and the thickness / distance are all millimeters (mm).

[0184]

[0185]

[0186] Table 10

[0187] The following Table 11 shows the conic coefficients k and the respective higher order coefficients A, B, C, D, E, F and G of the aspherical lens surfaces S3, S4, S13 and S14 used in the optical lens according to Example 4.

[0188] Surface No. k A B C D E F G S3 1.6363 -2.2697E-04 9.3138E-06 -7.5984E-07 1.3508E-07 -1.2029E-08 5.8020E-10 -1.0536E-11 S4 -1.0739 -6.7842E-05 3.7560E-06 8.3653E-09 -9.8000E-09 6.4736E-10 -1.6635E-11 1.6097E-13 S13 -4.0906 2.0986E-04 2.8522E-05 -1.7884E-06 4.5026E-07 -4.6586E-08 2.4352E-09 -4.8409E-11 S14 -200.0000 -1.6612E-03 2.7079E-04 -1.7987E-05 4.7030E-07 5.1945E-08 -4.4923E-09 1.1310E-10

[0189] Table 11

[0190] The following Table 12 gives the optical total track length TTL (i.e. the distance on the optical axis from the center of the object side surface S1 of the first lens L1 to the image plane IMA of the optical lens), the overall focal length value F of the optical lens, the maximum entrance pupil diameter D of the object side surface S1 of the first lens L1 corresponding to the maximum field of view FOV of the optical lens, the image height H corresponding to the maximum field of view FOV of the optical lens, the maximum field of view FOV 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 surface S14 of the seventh lens L7 to the image plane IMA of the optical lens), the lens group length TL of the optical lens (i.e. the distance on the optical axis from the center of the object side surface S1 of the first lens L1 to the center of the image side surface S14 of the seventh lens L7), the focal length value F3 of the third lens L3, the focal length value F4 of the fourth lens L4, the focal length value F5 of the fifth lens L5 and the focal length value F6 of the sixth lens L6 of the optical lens according to Example 4.

[0191] TTL (mm) 33.0857 TL (mm) 27.4045 F (mm) 3.9891 F3 (mm) 22.7504 D (mm) 12.5597 F4 (mm) 12.1312 H (mm) 9.5599 F5 (mm) 10.1036 FOV (°) 140 F6 (mm) -4.4905 BFL (mm) 5.6812

[0192] Table 12

[0193] Example 5

[0194] The following Table 13 shows the conic coefficients k and the respective higher order coefficients A, B, C, D, E, F and G of the aspherical lens surfaces S3, S4, S13 and S14 used in the optical lens according to Example 5. Figure 5 An optical lens according to Example 5 of the present application is described. Figure 5 is a schematic view showing the structure of an optical lens according to Example 5 of the present application.

[0195] As shown in Figure 5 , 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 stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7.

[0196] The first lens L1 is a meniscus lens with negative refractive power, the object side surface S1 of which is convex and the image side surface S2 of which is concave, and both the object side surface S1 and the image side surface S2 of the first lens L1 are spherical surfaces.

[0197] The second lens L2 is a meniscus lens with negative refractive power, the object side surface S3 of which is concave and the image side surface S4 of which is convex, and both the object side surface S3 and the image side surface S4 of the second lens L2 are aspherical surfaces.

[0198] The third lens L3 is a meniscus lens with positive refractive power. The object-side surface S5 of the third lens L3 is convex, and the image-side surface S6 is concave. Both the object-side surface S5 and the image-side surface S6 of the third lens L3 are spherical surfaces.

[0199] The fourth lens L4 is a biconvex lens with positive refractive power. Its object-side surface S8 is convex, and its image-side surface S9 is convex. Both the object-side surface S8 and the image-side surface S9 of the fourth lens L4 are aspherical surfaces.

[0200] The fifth lens L5 is a biconvex lens with positive refractive power. The object-side surface S10 and the image-side surface S11 of the fifth lens L5 are convex, and both the object-side surface S10 and the image-side surface S11 are spherical.

[0201] The sixth lens L6 is a meniscus lens with negative refractive power. The object-side surface S11 thereof is concave, and the image-side surface S12 is convex. Both the object-side surface S11 and the image-side surface S12 of the sixth lens L6 are spherical surfaces.

[0202] The seventh lens L7 is a meniscus lens with positive refractive power. The object-side surface S13 thereof is convex, and the image-side surface S14 thereof is concave. Both the object-side surface S13 and the image-side surface S14 of the seventh lens L7 are aspherical surfaces.

[0203] In this embodiment, the fifth lens L5 and the sixth lens L6 are combined into a cemented lens.

[0204] Optionally, the optical lens may further include a filter L8 and / or a protective glass L8 having an object-side surface S15 and an image-side surface S16. The filter L8 may be used to correct for color deviation, and the protective glass L8 may 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 S16 and is ultimately imaged on the imaging surface IMA.

[0205] In the optical lens of this embodiment, the aperture STO can be disposed between the third lens L3 and the fourth lens L4 to further improve the imaging quality.

[0206] Table 13 shows the basic parameters of the optical lens of Example 5, wherein the units of curvature radius and thickness / distance are all millimeters (mm).

[0207]

[0208] Table 13

[0209] Table 14 below shows the conic coefficient k and the higher-order coefficients A, B, C, D, E, F, and G that can be used for the aspherical lens surfaces S3, S4, S8, S9, S13, and S14 in Example 5.

[0210] Surface No. k A B C D E F G S3 -0.5957 4.0390E-04 -4.3642E-06 1.7874E-06 -2.0450E-07 1.2700E-08 -3.8529E-10 4.3195E-12 S4 -2.2779 2.4454E-04 3.3539E-07 2.9720E-07 -1.9963E-08 7.9086E-10 -1.2936E-11 7.3297E-15 S8 1.7704 -1.2450E-04 5.6747E-05 -1.7547E-05 2.1012E-06 -1.4564E-07 5.2612E-09 -8.1970E-11 S9 -59.1945 -7.9032E-04 1.1506E-04 -9.3715E-06 6.0082E-07 -1.8372E-08 -3.9824E-11 1.2062E-11 S13 -14.0684 2.0557E-04 -1.5254E-04 4.4282E-06 -2.6851E-07 1.2460E-10 7.2407E-10 -1.3247E-11 S14 -15.0970 -8.2608E-04 -8.4856E-05 3.6054E-06 -2.6968E-07 1.1097E-08 1.3088E-10 -8.7242E-12

[0211] Table 14

[0212] The following Table 15 gives the 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 plane IMA) of the optical lens of Example 5, the overall focal length value F of the optical lens, the maximum clear aperture D of the object side S1 of the first lens L1 corresponding to the maximum field of view FOV of the optical lens, the image height H corresponding to the maximum field of view FOV of the optical lens, the maximum field of view FOV 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 S14 of the seventh lens L7 to the imaging plane IMA of the optical lens), the lens group length TL 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 center of the image side S14 of the seventh lens L7), the focal length value F3 of the third lens L3, the focal length value F4 of the fourth lens L4, the focal length value F5 of the fifth lens L5, and the focal length value F6 of the sixth lens L6.

[0213] TTL (mm) 32.2187 TL (mm) 27.7649 F (mm) 4.0522 F3 (mm) 25.3956 D (mm) 12.8343 F4 (mm) 11.3608 H (mm) 9.8932 F5 (mm) 8.0009 FOV (°) 140 F6 (mm) -7.1157 BFL (mm) 4.4538

[0214] Table 15

[0215] Example 6

[0216] The following refers to Figure 6 An optical lens according to Example 6 of the present application is described. Figure 6 is a structural schematic diagram illustrating an optical lens according to Example 6 of the present application.

[0217] As shown in Figure 6 , 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 stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7.

[0218] The first lens L1 is a meniscus lens with negative refractive power, the object side S1 of which is a convex surface, and the image side S2 of which is a concave surface, and both the object side S1 and the image side S2 of the first lens L1 are spherical surfaces.

[0219] The second lens L2 is a meniscus lens with negative refractive power, the object side S3 of which is a concave surface, and the image side S4 of which is a convex surface, and both the object side S3 and the image side S4 of the second lens L2 are aspherical surfaces.

[0220] The third lens L3 is a meniscus lens with positive refractive power, the object side S5 of which is a convex surface, and the image side S6 of which is a concave surface, and both the object side S5 and the image side S6 of the third lens L3 are spherical surfaces.

[0221] The fourth lens L4 is a biconvex lens with positive refractive power, the object side S8 is a convex surface, the image side S9 is a convex surface, and the object side S8 and the image side S9 of the fourth lens L4 are both aspherical surfaces.

[0222] The fifth lens L5 is a biconvex lens with positive refractive power, the object side S10 is a convex surface, the image side S11 is a convex surface, and the object side S10 and the image side S11 of the fifth lens L5 are both spherical surfaces.

[0223] The sixth lens L6 is a meniscus lens with negative refractive power, the object side S11 is a concave surface, the image side S12 is a convex surface, and the object side S11 and the image side S12 of the sixth lens L6 are both spherical surfaces.

[0224] The seventh lens L7 is a meniscus lens with positive refractive power, the object side S13 is a convex surface, the image side S14 is a concave surface, and the object side S13 and the image side S14 of the seventh lens L7 are both aspherical surfaces.

[0225] In this embodiment, the fifth lens L5 and the sixth lens L6 are combined into a cemented lens.

[0226] Optionally, the optical lens can further include a filter L8 and / or a protective glass L8 with an object side S15 and an image side S16. The filter L8 can be used to correct color deviation, and the protective glass L8 can be used to protect the image sensor chip located at the imaging plane IMA. The light from the object sequentially passes through the surfaces S1 to S16 and is finally imaged on the imaging plane IMA.

[0227] In the optical lens of this embodiment, the stop STO can be arranged between the third lens L3 and the fourth lens L4 to further improve the imaging quality.

[0228] Table 16 shows the basic parameter table of the optical lens of embodiment 6, wherein the units of the radius of curvature and the thickness / distance are all millimeters (mm).

[0229]

[0230] Table 16

[0231] The following table 17 shows the conic coefficients k and the high-order coefficients A, B, C, D, E, F and G of the aspherical lens surfaces S3, S4, S8, S9, S13 and S14 that can be used in embodiment 6.

[0232] Surface No. k A B C D E F G S3 -0.6091 4.5150E-04 -8.1755E-07 1.7065E-06 -2.0567E-07 1.2565E-08 -3.9046E-10 4.6938E-12 S4 -1.8263 6.9928E-05 6.8789E-07 2.4503E-07 -2.0932E-08 8.9349E-10 -1.8972E-11 1.3604E-13 S8 1.6400 -1.8955E-04 6.7087E-05 -1.7272E-05 2.0820E-06 -1.4521E-07 5.3397E-09 -8.3086E-11 S9 -96.3605 -4.0411E-04 1.1263E-04 -1.0369E-05 6.8871E-07 -1.4033E-08 -5.3734E-10 2.5610E-11 S13 -8.9239 2.1871E-03 -1.0165E-04 5.3766E-06 -2.2452E-07 1.8766E-09 2.6737E-10 -7.1689E-12 S14 -34.9739 4.0942E-04 -4.1072E-05 3.9322E-06 -2.6377E-07 8.3391E-09 4.0165E-11 -4.0334E-12

[0233] Table 17

[0234] The following Table 18 shows the 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 plane IMA of the optical lens), the overall focal length value F of the optical lens, the maximum clear aperture D of the first lens L1 corresponding to the maximum field of view FOV of the optical lens, the image height H corresponding to the maximum field of view FOV of the optical lens, the maximum field of view FOV of the optical lens, the optical back focal length BFL (the distance on the optical axis from the center of the image side S14 of the seventh lens L7 to the imaging plane IMA of the optical lens), the lens group length TL (the distance on the optical axis from the center of the object side S1 of the first lens L1 to the center of the image side S14 of the seventh lens L7), the focal length value F3 of the third lens L3, the focal length value F4 of the fourth lens L4, the focal length value F5 of the fifth lens L5, and the focal length value F6 of the sixth lens L6 of the optical lens of Example 6.

[0235]

[0236]

[0237] Table 18

[0238] Example 7

[0239] The following refers to Figure 7 An optical lens according to Example 7 of the present application is described. Figure 7 is a structural schematic diagram illustrating an optical lens according to Example 7 of the present application.

[0240] As shown in Figure 7 , 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 stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7.

[0241] The first lens L1 is a meniscus lens with negative refractive power, the object side S1 of which is a convex surface, and the image side S2 of which is a concave surface, and both the object side S1 and the image side S2 of the first lens L1 are spherical surfaces.

[0242] The second lens L2 is a meniscus lens with negative refractive power, the object side S3 of which is a concave surface, and the image side S4 of which is a convex surface, and both the object side S3 and the image side S4 of the second lens L2 are aspherical surfaces.

[0243] The third lens L3 is a meniscus lens with positive refractive power, the object side S5 of which is a convex surface, and the image side S6 of which is a concave surface, and both the object side S5 and the image side S6 of the third lens L3 are spherical surfaces.

[0244] The fourth lens L4 is a biconvex lens with positive refractive power, the object side S8 is a convex surface, the image side S9 is a convex surface, and the object side S8 and the image side S9 of the fourth lens L4 are both spherical surfaces.

[0245] The fifth lens L5 is a biconvex lens with positive refractive power, the object side S10 is a convex surface, the image side S11 is a convex surface, and the object side S10 and the image side S11 of the fifth lens L5 are both spherical surfaces.

[0246] The sixth lens L6 is a meniscus lens with negative refractive power, the object side S11 is a concave surface, the image side S12 is a convex surface, and the object side S11 and the image side S12 of the sixth lens L6 are both spherical surfaces.

[0247] The seventh lens L7 is a meniscus lens with positive refractive power, the object side S13 is a concave surface, the image side S14 is a convex surface, and the object side S13 and the image side S14 of the seventh lens L7 are both aspherical surfaces.

[0248] In the embodiment, the fifth lens L5 and the sixth lens L6 are combined into a cemented lens.

[0249] Optionally, the optical lens can further include a filter L8 and / or a protective glass L8 with an object side S15 and an image side S16. The filter L8 can be used to correct color deviation, and the protective glass L8 can be used to protect the image sensor chip located at the imaging plane IMA. The light from the object sequentially passes through the surfaces S1 to S16 and is finally imaged on the imaging plane IMA.

[0250] In the optical lens of the embodiment, the stop STO can be arranged between the third lens L3 and the fourth lens L4 to further improve the imaging quality.

[0251] Table 19 shows the basic parameter table of the optical lens of embodiment 7, wherein the units of the radius of curvature and the thickness / distance are all millimeters (mm).

[0252]

[0253]

[0254] Table 19

[0255] The following table 20 shows the conic coefficients k and the high-order coefficients A, B, C, D, E, F and G of the aspherical lens surfaces S3, S4, S13 and S14 that can be used in embodiment 7.

[0256]

[0257] Table 20

[0258] The following Table 21 shows the 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 plane IMA) of the optical lens of Example 7, the overall focal length value F of the optical lens, the maximum clear aperture D of the first lens L1 corresponding to the maximum field of view FOV of the optical lens, the image height H corresponding to the maximum field of view FOV of the optical lens, the maximum field of view FOV of the optical lens, the optical back focal length BFL (the distance on the optical axis from the center of the image side S14 of the seventh lens L7 to the imaging plane IMA of the optical lens), the lens group length TL (the distance on the optical axis from the center of the object side S1 of the first lens L1 to the center of the image side S14 of the seventh lens L7) of the optical lens, the focal length value F3 of the third lens L3, the focal length value F4 of the fourth lens L4, the focal length value F5 of the fifth lens L5, and the focal length value F6 of the sixth lens L6.

[0259] TTL (mm) 31.0029 TL (mm) 25.8926 F (mm) 4.0704 F3 (mm) 28.0012 D (mm) 11.7993 F4 (mm) 10.8825 H (mm) 9.2709 F5 (mm) 8.0025 FOV (°) 140 F6 (mm) -6.7304 BFL (mm) 5.1103

[0260] Table 21

[0261] Example 8

[0262] The following refers to Figure 8 An optical lens according to Example 8 of the present application is described. Figure 8 is a structural schematic diagram illustrating an optical lens according to Example 8 of the present application.

[0263] 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 stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7.

[0264] 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 spherical surfaces.

[0265] The second lens L2 is a meniscus lens with negative refractive power, the object side S3 thereof is a concave surface, the image side S4 thereof is a convex surface, and both the object side S3 and the image side S4 of the second lens L2 are aspherical surfaces.

[0266] The third lens L3 is a meniscus lens with positive refractive power, the object side S5 thereof is a convex surface, the image side S6 thereof is a concave surface, and both the object side S5 and the image side S6 of the third lens L3 are spherical surfaces.

[0267] The fourth lens L4 is a double convex lens with positive refractive power, the object side S8 thereof is a convex surface, the image side S9 thereof is a convex surface, and both the object side S8 and the image side S9 of the fourth lens L4 are spherical surfaces.

[0268] The fifth lens L5 is a biconvex lens with positive refractive power, the object side surface S10 is a convex surface, the image side surface S11 is a convex surface, and both the object side surface S10 and the image side surface S11 of the fifth lens L5 are spherical surfaces.

[0269] 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 spherical surfaces.

[0270] The seventh lens L7 is a meniscus lens with positive refractive power, the object side surface S13 is a concave surface, the image side surface S14 is a convex surface, and both the object side surface S13 and the image side surface S14 of the seventh lens L7 are aspherical surfaces.

[0271] In this embodiment, the fifth lens L5 and the sixth lens L6 are combined into a cemented lens.

[0272] Optionally, the optical lens can further include a filter L8 and / or a protective glass L8 with an object side surface S15 and an image side surface S16. The filter L8 can be used to correct color deviation, and the protective glass L8 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 S16 and is finally imaged on the imaging plane IMA.

[0273] In the optical lens of this embodiment, the stop STO can be arranged between the third lens L3 and the fourth lens L4 to further improve the imaging quality.

[0274] Table 22 shows the basic parameter table of the optical lens of embodiment 8, wherein the units of the radius of curvature and the thickness / distance are all millimeters (mm).

[0275]

[0276]

[0277] Table 22

[0278] The following table 23 shows the conic coefficients k and the high-order coefficients A, B, C, D, E, F and G of the aspherical lens surfaces S3, S4, S13 and S14 that can be used in embodiment 8.

[0279]

[0280] Table 23

[0281] The following Table 24 shows the 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 plane IMA) of the optical lens of Example 8, the overall focal length value F of the optical lens, the maximum clear aperture D of the first lens L1 corresponding to the maximum field of view FOV of the optical lens, the image height H corresponding to the maximum field of view FOV of the optical lens, the maximum field of view FOV of the optical lens, the optical back focal length BFL (the distance on the optical axis from the center of the image side S14 of the seventh lens L7 to the imaging plane IMA of the optical lens), the lens group length TL (the distance on the optical axis from the center of the object side S1 of the first lens L1 to the center of the image side S14 of the seventh lens L7) of the optical lens, the focal length value F3 of the third lens L3, the focal length value F4 of the fourth lens L4, the focal length value F5 of the fifth lens L5, and the focal length value F6 of the sixth lens L6.

[0282] TTL (mm) 31.0016 TL (mm) 25.8675 F (mm) 4.0784 F3 (mm) 28.1821 D (mm) 12.1551 F4 (mm) 10.9355 H (mm) 9.2036 F5 (mm) 7.9907 FOV (°) 140 F6 (mm) -6.8386 BFL (mm) 5.1341

[0283] Table 24

[0284] Example 9

[0285] The following refers to Figure 9 An optical lens according to Example 9 of the present application is described. Figure 9 is a structural schematic diagram illustrating an optical lens according to Example 9 of the present application.

[0286] As shown in Figure 9 , 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 stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7.

[0287] 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 spherical surfaces.

[0288] The second lens L2 is a meniscus lens with negative refractive power, the object side S3 thereof is a concave surface, the image side S4 thereof is a convex surface, and both the object side S3 and the image side S4 of the second lens L2 are aspherical surfaces.

[0289] The third lens L3 is a meniscus lens with positive refractive power, the object side S5 thereof is a convex surface, the image side S6 thereof is a concave surface, and both the object side S5 and the image side S6 of the third lens L3 are spherical surfaces.

[0290] The fourth lens L4 is a double convex lens with positive refractive power, the object side S8 thereof is a convex surface, the image side S9 thereof is a convex surface, and both the object side S8 and the image side S9 of the fourth lens L4 are spherical surfaces.

[0291] The fifth lens L5 is a biconvex lens with positive refractive power, the object side surface S10 is a convex surface, the image side surface S11 is a convex surface, and both the object side surface S10 and the image side surface S11 of the fifth lens L5 are spherical surfaces.

[0292] 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 spherical surfaces.

[0293] The seventh lens L7 is a meniscus lens with negative refractive power, the object side surface S13 is a convex surface, the image side surface S14 is a concave surface, and both the object side surface S13 and the image side surface S14 of the seventh lens L7 are aspherical surfaces.

[0294] In this embodiment, the fifth lens L5 and the sixth lens L6 are combined into a cemented lens.

[0295] Optionally, the optical lens can further include a filter L8 and / or a protective glass L8 with an object side surface S15 and an image side surface S16. The filter L8 can be used to correct color deviation, and the protective glass L8 can be used to protect the image sensor chip located at the imaging plane IMA. Light from the object sequentially passes through the surfaces S1 to S16 and is finally imaged on the imaging plane IMA.

[0296] In the optical lens of this embodiment, the stop STO can be arranged between the third lens L3 and the fourth lens L4 to further improve the imaging quality.

[0297] Table 25 shows the basic parameter table of the optical lens of embodiment 9, wherein the units of the radius of curvature and the thickness / distance are all millimeters (mm).

[0298]

[0299] Table 25

[0300] The following table 26 shows the conic coefficients k and the high-order coefficients A, B, C, D, E, F and G of the aspherical lens surfaces S3, S4, S13 and S14 that can be used in embodiment 9.

[0301] Surface No. k A B C D E F G S3 -0.5577 -0.00018714 0.000100445 -2.18361E-05 3.43419E-06 -2.98238E-07 1.35969E-08 -2.53372E-10 S4 -0.8699 0.000310007 -3.84481E-05 1.07807E-05 -1.25727E-06 8.41332E-08 -2.97016E-09 4.33315E-11 S13 108.426 -0.0064430 0.000494761 -0.000114816 2.14609E-05 -2.00278E-06 1.00904E-07 -2.18071E-09 S14 200.0 -0.003598 0.000187167 -9.13174E-06 2.68951E-06 -2.79732E-07 1.59899E-08 -4.15607E-10

[0302] Table 26

[0303] The following Table 27 shows the 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 plane IMA) of the optical lens of Example 9, the overall focal length value F of the optical lens, the maximum clear aperture D of the first lens L1 corresponding to the maximum field of view FOV of the optical lens, the image height H corresponding to the maximum field of view FOV of the optical lens, the maximum field of view FOV of the optical lens, the optical back focal length BFL (the distance on the optical axis from the center of the image side S14 of the seventh lens L7 to the imaging plane IMA of the optical lens), the lens group length TL (the distance on the optical axis from the center of the object side S1 of the first lens L1 to the center of the image side S14 of the seventh lens L7) of the optical lens, the focal length value F3 of the third lens L3, the focal length value F4 of the fourth lens L4, the focal length value F5 of the fifth lens L5, and the focal length value F6 of the sixth lens L6.

[0304] TTL (mm) 31.0001 TL (mm) 26.092 F (mm) 4.1007 F3 (mm) 24.9029 D (mm) 13.427 F4 (mm) 10.229 H (mm) 8.6916 F5 (mm) 9.6869 FOV (°) 140 F6 (mm) -12.9412 BFL (mm) 4.9081

[0305] Table 27

[0306] Example 10

[0307] The following refers to Figure 10 An optical lens according to Example 10 of the present application is described. Figure 10 is a structural schematic diagram illustrating an optical lens according to Example 10 of the present application.

[0308] As shown in Figure 10 , 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 stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7.

[0309] The first lens L1 is a meniscus lens with negative refractive power, the object side S1 of which is a convex surface, and the image side S2 of which is a concave surface, and both the object side S1 and the image side S2 of the first lens L1 are spherical surfaces.

[0310] The second lens L2 is a meniscus lens with negative refractive power, the object side S3 of which is a concave surface, and the image side S4 of which is a convex surface, and both the object side S3 and the image side S4 of the second lens L2 are aspherical surfaces.

[0311] The third lens L3 is a meniscus lens with positive refractive power, the object side S5 of which is a convex surface, and the image side S6 of which is a concave surface, and both the object side S5 and the image side S6 of the third lens L3 are spherical surfaces.

[0312] The fourth lens L4 is a double convex lens with positive refractive power, the object side S8 of which is a convex surface, and the image side S9 of which is a convex surface, and both the object side S8 and the image side S9 of the fourth lens L4 are aspherical surfaces.

[0313] The fifth lens L5 is a biconvex lens with positive refractive power, the object side surface S10 is a convex surface, the image side surface S11 is a convex surface, and both the object side surface S10 and the image side surface S11 of the fifth lens L5 are spherical surfaces.

[0314] 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 spherical surfaces.

[0315] The seventh lens L7 is a meniscus lens with negative refractive power, the object side surface S13 is a concave surface, the image side surface S14 is a convex surface, and both the object side surface S13 and the image side surface S14 of the seventh lens L7 are aspherical surfaces.

[0316] In this embodiment, the fifth lens L5 and the sixth lens L6 are combined into a cemented lens.

[0317] Optionally, the optical lens can further include a filter L8 and / or a protective glass L8 with an object side surface S15 and an image side surface S16. The filter L8 can be used to correct color deviation, and the protective glass L8 can be used to protect the image sensor chip located at the imaging plane IMA. Light from the object sequentially passes through the surfaces S1 to S16 and is finally imaged on the imaging plane IMA.

[0318] In the optical lens of this embodiment, the stop STO can be arranged between the third lens L3 and the fourth lens L4 to further improve the imaging quality.

[0319] Table 28 shows the basic parameter table of the optical lens of embodiment 10, wherein the units of the radius of curvature and the thickness / distance are all millimeters (mm).

[0320]

[0321] Table 28

[0322] The following table 29 shows the conic constant k and the high-order coefficients A, B, C, D, E, F and G of the aspherical lens surfaces S3, S4, S8, S9, S13 and S14 that can be used in embodiment 10.

[0323]

[0324] Table 29

[0325] The following Table 30 shows the 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 plane IMA) of the optical lens of Example 10, the overall focal length value F of the optical lens, the maximum entrance pupil diameter D of the first lens L1 corresponding to the maximum field of view FOV of the optical lens, the image height H corresponding to the maximum field of view FOV of the optical lens, the maximum field of view FOV 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 S14 of the seventh lens L7 to the imaging plane IMA of the optical lens), the lens group length TL 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 center of the image side S14 of the seventh lens L7), the focal length value F3 of the third lens L3, the focal length value F4 of the fourth lens L4, the focal length value F5 of the fifth lens L5, and the focal length value F6 of the sixth lens L6.

[0326]

[0327]

[0328] Table 30

[0329] In summary, Examples 1 to 10 respectively satisfy the relationships shown in Table 31.

[0330]

[0331] Table 31

[0332] 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 such as an auxiliary driving system. 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.

[0333] The above description is merely exemplary of the application and the application principles of the technology used. It should be understood by those skilled in the art that the scope of the application 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 combination of the above technical features or equivalent features without departing from the inventive concept. For example, the above features can be replaced with technical features disclosed in the present application (but not limited to) having similar functions to form technical solutions.

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 optical power, wherein the object-side surface is concave and the image-side surface is convex; a third lens having positive optical power; a fourth lens element having positive optical power, with a convex object-side surface and a convex image-side surface; a fifth lens element having positive optical power, with a convex object-side surface and a convex image-side surface; a sixth lens having negative optical power; and a seventh lens having optical power, The number of lenses having optical power in the optical lens is seven; in, The focal length F of the optical lens set and the curvature radius R11 of the object side surface of the first lens satisfy: |F / R11|≤0.4; The focal length F3 of the third lens and the focal length F4 of the fourth lens satisfy: 1.4337≤|F3 / F4|≤2.888; The curvature radius R12 of the image-side surface of the first lens and the curvature radius R21 of the object-side surface of the second lens satisfy: -1.0≤R12 / R21≤-0.652; A curvature radius R11 of the object-side surface of the first lens and a curvature radius R12 of the image-side surface of the first lens satisfy: 3.13≤R11 / R12≤6.

0.

2. The optical lens according to claim 1, wherein: The second lens has positive refractive power.

3. The optical lens according to claim 1, wherein: The second lens has negative optical power.

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

5. The optical lens according to claim 1, wherein: The object-side surface of the third lens is convex, and the image-side surface is convex.

6. The optical lens according to claim 1, wherein: The object-side surface of the sixth lens is concave, and the image-side surface is concave.

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

8. The optical lens according to claim 1, wherein: The seventh lens has positive refractive power.

9. The optical lens according to claim 1, wherein: The seventh lens has negative refractive power.

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

11. The optical lens according to any one of claims 1 to 10, characterized in that: Satisfies: 0.1517≤|F / R11|≤0.

4.

12. The optical lens according to any one of claims 1 to 10, characterized in that: Satisfies: 0.1517≤|F / R11|≤0.

271.

13. The optical lens according to any one of claims 1 to 10, characterized in that: 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 the following conditions: 57.3436°≤(FOV×F) / H≤70°.

14. The optical lens according to any one of claims 1 to 10, characterized in that: A distance d4 between the second lens and the third lens on the optical axis and a total optical length TTL of the optical lens satisfy the following: 0.00266≤d4 / TTL≤0.

004.

15. The optical lens according to any one of claims 1 to 10, characterized in that: A distance d4 between the second lens and the third lens on the optical axis and a total optical length TTL of the optical lens satisfy the following: 0.00266≤d4 / TTL≤0.0035.

16. The optical lens according to any one of claims 1 to 10, characterized in that: The total optical length TTL of the optical lens satisfies: 7.5597≤TTL / F≤9.

17. The optical lens according to any one of claims 1 to 10, characterized in that: The optical back focus BFL of the optical lens and the lens group length TL of the optical lens satisfy the following: 0.11≤BFL / TL≤0.2073.

18. The optical lens according to any one of claims 1 to 10, characterized in that: The image height H corresponding to the maximum field angle of the optical lens satisfies the following: 0.4096≤F / H≤0.

55.

19. The optical lens according to any one of claims 1 to 10, characterized in that: The maximum field of view FOV of the optical lens, the maximum clear aperture D of the object side surface 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: D / H / FOV×180°≤2.

7.

20. The optical lens according to any one of claims 1 to 10, characterized in that: The focal length F4 of the fourth lens and the focal length F5 of the fifth lens satisfy: 1.0≤|F4 / F5|≤1.4334.

21. The optical lens according to any one of claims 1 to 10, characterized in that: The focal length F5 of the fifth lens and the focal length F6 of the sixth lens satisfy: 0.5≤|F5 / F6|≤3.

0.

22. The optical lens according to any one of claims 1 to 10, characterized in that: At least one of the following conditions is met: -0.9352≤R12 / R21≤-0.652;3.13≤R11 / R12≤5.3025;57.3436°≤(FOV×F) / H≤66.052°;0.00266≤d4 / TTL≤0.0032;7.5597≤TTL / F≤10;7.5597≤TTL / F≤8.7881;0.1226≤BFL / TL≤0.2073; 0.4096≤F / H≤0.4718; 1.638≤D / H / FOV×180°≤2.7; 1.638≤D / H / FOV×180°≤ 2.016; -0.614≤R41 / R42≤-0.25; 1.056≤|F4 / F5|≤1.4334; 0.7464≤|F5 / F6|≤2.2691; Among them, FOV is the maximum field of view of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, d4 is the distance between the second lens and the third lens on the optical axis, TTL is the total optical length of the optical lens, BFL is the optical back focus of the optical lens, TL is the lens group length 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, R41 is the curvature radius of the object side of the fourth lens, R42 is the curvature radius of the image side of the fourth lens, F5 is the focal length value of the fifth lens, and F6 is the focal length value of the sixth lens.

23. 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 optical power, wherein the object-side surface is concave and the image-side surface is convex; a third lens having positive optical power; a fourth lens element having positive optical power, with a convex object-side surface and a convex image-side surface; a fifth lens element having positive optical power, with a convex object-side surface and a convex image-side surface; a sixth lens having negative optical power; and a seventh lens having optical power, The number of lenses having optical power in the optical lens is seven; in, The maximum field of view FOV of the optical lens, the entire focal length F of the optical lens, and the image height H corresponding to the maximum field of view of the optical lens satisfy the following conditions: 50°≤(FOV×F) / H≤70°; The focal length F of the optical lens set and the curvature radius R11 of the object side surface of the first lens satisfy: |F / R11|≤0.271; The focal length F5 of the fifth lens and the focal length F6 of the sixth lens satisfy: 0.5≤|F5 / F6|≤3.

5.

24. The optical lens according to claim 23, wherein: The second lens has positive refractive power.

25. The optical lens according to claim 23, wherein: The second lens has negative optical power.

26. The optical lens according to claim 23, wherein: The object-side surface of the third lens is convex, and the image-side surface is concave.

27. The optical lens according to claim 23, wherein: The object-side surface of the third lens is convex, and the image-side surface is convex.

28. The optical lens according to claim 23, wherein: The object-side surface of the sixth lens is concave, and the image-side surface is concave.

29. The optical lens according to claim 23, wherein: The object-side surface of the sixth lens is concave, and the image-side surface is convex.

30. The optical lens according to claim 23, wherein: The seventh lens has positive refractive power.

31. The optical lens according to claim 23, wherein: The seventh lens has negative refractive power.

32. The optical lens according to claim 23, wherein: The object-side surface of the seventh lens is convex, and the image-side surface is convex; or, the object-side surface of the seventh lens is convex, and the image-side surface is concave; or, the object-side surface of the seventh lens is concave, and the image-side surface is convex.

33. The optical lens according to any one of claims 23 to 32, characterized in that: The focal length F3 of the third lens and the focal length F4 of the fourth lens satisfy: 1.4337≤|F3 / F4|≤2.

888.

34. The optical lens according to any one of claims 23 to 32, wherein: Satisfies: 0.1517≤|F / R11|≤0.

271.

35. The optical lens according to any one of claims 23 to 32, characterized in that: The focal length F5 of the fifth lens and the focal length F6 of the sixth lens satisfy: 0.5≤|F5 / F6|≤3.

0.

36. The optical lens according to any one of claims 23 to 32, wherein: Satisfies: 57.3436°≤(FOV×F) / H≤70°.

37. The optical lens according to any one of claims 23 to 32, characterized in that: A distance d4 between the second lens and the third lens on the optical axis and a total optical length TTL of the optical lens satisfy the following: 0.00266≤d4 / TTL≤0.

004.

38. The optical lens according to any one of claims 23 to 32, characterized in that: A distance d4 between the second lens and the third lens on the optical axis and a total optical length TTL of the optical lens satisfy the following: 0.00266≤d4 / TTL≤0.0035.

39. The optical lens according to any one of claims 23 to 32, characterized in that: The total optical length TTL of the optical lens satisfies: 7.5597≤TTL / F≤9.

40. The optical lens according to any one of claims 23 to 32, wherein: The optical back focus BFL of the optical lens and the lens group length TL of the optical lens satisfy: 0.11≤BFL / TL≤0.2073.

41. The optical lens according to any one of claims 23 to 32, wherein: Satisfies: 0.4096≤F / H≤0.

55.

42. The optical lens according to any one of claims 23 to 32, wherein: The maximum clear aperture D of the object-side surface of the first lens corresponding to the maximum field of view of the optical lens satisfies the following: D / H / FOV×180°≤2.

7.

43. The optical lens according to any one of claims 23 to 32, characterized in that: A curvature radius R12 of the image-side surface of the first lens and a curvature radius R21 of the object-side surface of the second lens satisfy: -1.0≤R12 / R21≤-0.

652.

44. The optical lens according to any one of claims 23 to 32, wherein: A curvature radius R12 of the image-side surface of the first lens satisfies: 2.0≤R11 / R12≤5.3025.

45. The optical lens according to any one of claims 23 to 32, characterized in that: The focal length F4 of the fourth lens and the focal length F5 of the fifth lens satisfy: 1.0≤|F4 / F5|≤1.4334.

46. ​​The optical lens according to any one of claims 23 to 32, characterized in that At least one of the following conditions is met: -0.9352≤R12 / R21≤-0.652; 0.7464≤|F5 / F6|≤2.2691; 57.3436°≤(FOV×F) / H≤66.05 2°; 0.00266≤d4 / TTL≤0.0032; 7.5597≤TTL / F≤10; 7.5597≤TTL / F≤8.7881; 0.1226≤BF L / TL≤0.2073; 0.4096≤F / H≤0.4718; 1.638≤D / H / FOV×180°≤2.7; 1.638≤D / H / FOV×180 °≤2.016; 3.13≤R11 / R12≤5.3025; -0.614≤R41 / R42≤-0.25; 1.056≤|F4 / F5|≤1.4334; Among them, R12 is the curvature radius of the image side surface of the first lens, R21 is the curvature radius of the object side surface of the second lens, d4 is the distance between the second lens and the third lens on the optical axis, TTL is the total optical length of the optical lens, BFL is the optical back focus of the optical lens, TL is the lens group length of the optical lens, D is the maximum clear aperture of the object side surface of the first lens corresponding to the maximum field of view of the optical lens, R12 is the curvature radius of the image side surface of the first lens, R41 is the curvature radius of the object side surface of the fourth lens, R42 is the curvature radius of the image side surface of the fourth lens, and F4 is the focal length value of the fourth lens.

47. An electronic device, characterized in that: The invention comprises an optical lens according to any one of claims 1 to 46 and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

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