Optical lens, camera module and terminal device

Abstract

The application discloses an optical lens, a camera module and a terminal device. The optical lens comprises: a first lens with negative refractive power, the object side surface and the image side surface of which are convex and concave respectively at the near optical axis; a second lens with negative refractive power, the object side surface and the image side surface of which are convex and concave respectively at the near optical axis; a third lens with negative refractive power, the object side surface and the image side surface of which are convex and concave respectively at the near optical axis; a fourth lens with positive refractive power, the object side surface and the image side surface of which are both convex at the near optical axis; a fifth lens with positive refractive power, the object side surface and the image side surface of which are both convex at the near optical axis; a sixth lens with negative refractive power, the object side surface and the image side surface of which are both concave at the near optical axis; and a seventh lens with positive refractive power, the object side surface and the image side surface of which are both convex at the near optical axis. The optical lens satisfies the relationship: 190°≤FOV≤210°; 14≤TTL / F≤16. The optical lens meets the requirements of large field of view and miniaturization.

Description

Technical Field

[0001] This application relates to the field of optical imaging technology, specifically to an optical lens, a camera module, and a terminal device. Background Technology

[0002] In recent years, with the rapid development of intelligent driving technology and the widespread application of artificial intelligence (AI) technology, the market demand for automotive optical lenses has increased significantly, and their application scenarios have expanded from traditional imaging to fields such as environmental recognition. In driver assistance systems, optical lenses, as the core optical components of the environmental recognition module, directly affect the accuracy of the vehicle's recognition of its surroundings, thus impacting driving safety. To meet the demand for optical lenses to capture wide-field, high-resolution images, the pixel count of the accompanying image sensors has been continuously increasing, and the size of the image sensors has also become larger. However, the design of optical lenses faces compatibility issues with large field of view and large pixel counts, as well as the contradiction between large field of view and miniaturization. Therefore, there is an urgent need to develop an optical lens that balances a large field of view and miniaturization to adapt to image sensors with higher pixel counts and larger sizes. Summary of the Invention

[0003] In view of the above, it is necessary to propose an optical lens, camera module and terminal device to meet the requirements of both large field of view and miniaturization, so as to adapt to image sensors with higher pixels and larger size.

[0004] To achieve the above objectives, in a first aspect, this application discloses an optical lens comprising seven lenses with refractive power, arranged sequentially from the object side to the image side along the optical axis: a first lens having negative refractive power, wherein the object side of the first lens is convex near the optical axis, and the image side of the first lens is concave near the optical axis; a second lens having negative refractive power, wherein the object side of the second lens is convex near the optical axis, and the image side of the second lens is concave near the optical axis; a third lens having negative refractive power, wherein the object side of the third lens is convex near the optical axis, and the image side of the third lens is concave near the optical axis; a fourth lens having positive refractive power, wherein the object side of the fourth lens is convex near the optical axis, and the image side of the fourth lens is convex near the optical axis; a fifth... The optical lens comprises a fifth lens with positive refractive power, wherein the object-side surface of the fifth lens is convex near the optical axis, and the image-side surface of the fifth lens is convex near the optical axis; a sixth lens with negative refractive power, wherein the object-side surface of the sixth lens is concave near the optical axis, and the image-side surface of the sixth lens is concave near the optical axis; and a seventh lens with positive refractive power, wherein the object-side surface of the seventh lens is convex near the optical axis, and the image-side surface of the seventh lens is convex near the optical axis; the optical lens satisfies the following relationships: 190°≤FOV≤210°; 14≤TTL / F≤16; where FOV is the maximum field of view of the optical lens, TTL is the distance from the object-side surface of the first lens to the imaging plane of the optical lens on the optical axis, and F is the effective focal length of the optical lens.

[0005] The optical lens provided in this application includes a first lens with negative refractive power, paired with an object-side surface that is convex near the optical axis and an image-side surface that is concave near the optical axis. This helps to expand the field of view of the optical lens, facilitates the coupling of more light into the optical lens, and improves the relative illumination of the optical lens. A second lens with negative refractive power, paired with an object-side surface that is convex near the optical axis and an image-side surface that is concave near the optical axis, works in conjunction with the first lens to better control the aperture of the optical lens, which is beneficial for miniaturization of the optical lens. It also facilitates further coupling of light passing through the first lens into the optical lens. A third lens with negative refractive power, paired with an object-side surface that is convex near the optical axis and an image-side surface that is concave near the optical axis, helps to slow down the entry of light into the optical lens, allowing the light path to smoothly transition to the fourth lens, which is beneficial for correcting the field curvature of the optical lens. A fourth lens with positive refractive power, paired with an object-side surface that is convex near the optical axis and an image-side surface that is concave near the optical axis... The convex object-side and convex image-side near the optical axis help suppress field curvature of the optical lens; the fifth lens with positive refractive power, combined with the convex object-side and convex image-side near the optical axis, helps compensate for temperature drift caused by the optical lens in high or low temperature environments, thus ensuring the imaging quality of the optical lens in high or low temperature environments; the sixth lens with negative refractive power, combined with the concave object-side and concave image-side near the optical axis, helps correct chromatic aberration of the optical lens, ensuring the imaging quality of the optical lens; the seventh lens with positive refractive power, combined with the convex object-side and convex image-side near the optical axis, allows various aberrations in the optical lens to be fully corrected, corrects the field aberration of the optical lens, simplifies the field curvature and aberration correction of the optical lens, reduces the tolerance sensitivity of the optical lens, and improves the imaging quality of the optical lens.

[0006] When the optical lens meets the requirements of 190°≤FOV≤210°, it possesses a large field of view, satisfying the wide-angle requirement and thus acquiring richer subject information, achieving good optical performance and high imaging optical quality. When the optical lens meets the requirements of 14≤TTL / F≤16, the optical assembly and focal length can be reasonably controlled, facilitating miniaturization and allowing light to converge better onto the imaging surface, thereby improving image quality. Therefore, the optical lens of this application satisfies the requirements of both a large field of view and miniaturization, and can be adapted to image sensors with higher pixel counts and larger sizes.

[0007] Secondly, this application discloses a camera module, which includes a photosensitive chip and an optical lens as described in the first aspect above, wherein the photosensitive chip is disposed on the image side of the optical lens. The camera module with the optical lens can meet the requirements of both a large field of view and miniaturization, and can be adapted to photosensitive chips with higher pixel counts and larger sizes.

[0008] Thirdly, this application discloses a terminal device, including a housing and a camera module as described in the second aspect above, wherein the camera module is disposed in the housing. The terminal device having the camera module can meet the requirements of both a large field of view and miniaturization, and can be adapted to image sensors with higher pixel counts and larger sizes. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of the optical lens disclosed in the first embodiment of this application.

[0010] Figure 2 These are the longitudinal spherical aberration curve, astigmatism curve, and distortion curve of the optical lens disclosed in the first embodiment of this application.

[0011] Figure 3 This is a schematic diagram of the structure of the optical lens disclosed in the second embodiment of this application.

[0012] Figure 4 These are the longitudinal spherical aberration curve, astigmatism curve, and distortion curve of the optical lens disclosed in the second embodiment of this application.

[0013] Figure 5 This is a schematic diagram of the structure of the optical lens disclosed in the third embodiment of this application.

[0014] Figure 6 These are the longitudinal spherical aberration curve, astigmatism curve, and distortion curve of the optical lens disclosed in the third embodiment of this application.

[0015] Figure 7 This is a schematic diagram of the structure of the optical lens disclosed in the fourth embodiment of this application.

[0016] Figure 8 These are the longitudinal spherical aberration curve, astigmatism curve, and distortion curve of the optical lens disclosed in the fourth embodiment of this application.

[0017] Figure 9 This is a schematic diagram of the structure of the optical lens disclosed in the fifth embodiment of this application.

[0018] Figure 10 These are the longitudinal spherical aberration curve, astigmatism curve, and distortion curve of the optical lens disclosed in the fifth embodiment of this application.

[0019] Figure 11 This is a schematic diagram of the structure of the optical lens disclosed in the sixth embodiment of this application.

[0020] Figure 12 These are the longitudinal spherical aberration curve, astigmatism curve, and distortion curve of the optical lens disclosed in the sixth embodiment of this application.

[0021] Figure 13 This is a schematic diagram of the structure of the optical lens disclosed in the seventh embodiment of this application.

[0022] Figure 14 These are the longitudinal spherical aberration curve, astigmatism curve, and distortion curve of the optical lens disclosed in the seventh embodiment of this application.

[0023] Figure 15 This is a schematic diagram of the structure of the optical lens disclosed in the eighth embodiment of this application.

[0024] Figure 16 These are the longitudinal spherical aberration curve, astigmatism curve, and distortion curve of the optical lens disclosed in the eighth embodiment of this application.

[0025] Figure 17 This is a schematic diagram of the structure of the optical lens disclosed in the ninth embodiment of this application.

[0026] Figure 18 These are the longitudinal spherical aberration curve, astigmatism curve, and distortion curve of the optical lens disclosed in the ninth embodiment of this application.

[0027] Figure 19 This is a schematic diagram of the camera module disclosed in this application.

[0028] Figure 20 This is a schematic diagram of the terminal device disclosed in this application. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figure 1 This application discloses an optical lens 100 comprising seven lenses with refractive power, arranged sequentially from the object side to the image side along the optical axis O: a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7. During imaging, light rays enter sequentially from the object side of the first lens L1 through the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, and the seventh lens L7, and are ultimately imaged onto the imaging plane IMG of the optical lens 100.

[0031] Furthermore, the first lens L1 has negative refractive power, the second lens L2 has negative refractive power, the third lens L3 has negative refractive power, the fourth lens L4 has positive refractive power, the fifth lens L5 has positive refractive power, the sixth lens L6 has negative refractive power, and the seventh lens L7 has positive refractive power.

[0032] Furthermore, the object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is concave near the optical axis O; the object-side surface S3 of the second lens L2 is convex near the optical axis O, and the image-side surface S4 of the second lens L2 is concave near the optical axis O; the object-side surface S5 of the third lens L3 is convex near the optical axis O, and the image-side surface S6 of the third lens L3 is concave near the optical axis O; the object-side surface S7 of the fourth lens L4 is convex near the optical axis O. The image-side surface S8 of the fourth lens L4 is convex near the optical axis O; the object-side surface S9 of the fifth lens L5 is convex near the optical axis O, and the image-side surface S10 of the fifth lens L5 is convex near the optical axis O; the object-side surface S11 of the sixth lens L6 is concave near the optical axis O, and the image-side surface S12 of the sixth lens L6 is concave near the optical axis O; the object-side surface S13 of the seventh lens L7 is convex near the optical axis O, and the image-side surface S14 of the seventh lens L7 is convex near the optical axis O.

[0033] In the optical lens 100 provided in this application, the first lens L1 with negative refractive power, combined with the object-side surface S1 which is convex near the optical axis O and the image-side surface S2 which is concave near the optical axis O, is beneficial for expanding the field of view of the optical lens 100, for coupling more light into the optical lens 100, and for improving the relative illumination of the optical lens 100; the second lens L2 with negative refractive power, combined with the object-side surface S3 which is convex near the optical axis O and the image-side surface S4 which is concave near the optical axis O, works in conjunction with the first lens L1 to better control the optical... The aperture of lens 100 facilitates miniaturization of the optical lens 100 and also allows for further coupling of light passing through the first lens L1 into the optical lens 100. The third lens L3, with negative refractive power, combined with the object-side surface S5 (convex near the optical axis O) and the image-side surface S6 (concave near the optical axis O), helps to slow down the entry of light into the optical lens 100, ensuring a smooth transition of light to the fourth lens L4, which helps correct the field curvature of the optical lens 100. The fourth lens L4, with positive refractive power, combined with the object-side surface S5 (convex near the optical axis O) and the image-side surface S6 (concave near the optical axis O), helps to reduce the amount of light entering the optical lens 100, allowing for a smoother transition of light to the fourth lens L4, thus helping to correct the field curvature of the optical lens 100. The object-side surface S7 and the image-side surface S8, which is convex near the optical axis O, help suppress field curvature of the optical lens 100. The fifth lens L5, with positive refractive power, combined with the object-side surface S9 and the image-side surface S10, which are convex near the optical axis O, helps compensate for temperature drift caused by the optical lens 100 in high or low temperature environments, thereby ensuring the imaging quality of the optical lens 100 in high or low temperature environments. The sixth lens L6, with negative refractive power, combined with the object-side surface S11, which is concave near the optical axis O, and the image-side surface S8, which is concave near the optical axis O, helps suppress field curvature of the optical lens 100. The concave image-side surface S12 at point O is beneficial for correcting chromatic aberration in the optical lens 100 and ensuring the imaging quality of the optical lens 100. The seventh lens L7 with positive refractive power, together with the convex object-side surface S13 at point O near the optical axis and the convex image-side surface S14 at point O near the optical axis, enables various aberrations in the optical lens 100 to be fully corrected, corrects the field aberration of the optical lens 100, simplifies the field curvature correction of the optical lens 100, reduces the tolerance sensitivity of the optical lens 100, and improves the imaging quality of the optical lens 100.

[0034] In some embodiments, when the optical lens 100 is applied to terminal devices such as in-vehicle devices and dashcams, the first lens L1, second lens L2, third lens L3, fourth lens L4, fifth lens L5, sixth lens L6, and seventh lens L7 can all be made of glass. This allows the optical lens 100 to achieve good optical performance while reducing the impact of temperature on the lenses. Of course, some lenses in the optical lens 100 can be made of glass, while others can be made of plastic. This ensures that while reducing the impact of temperature on the lenses to achieve good imaging results, it also reduces the processing cost and weight of the lenses, thereby reducing the overall weight of the optical lens 100. Furthermore, it is understood that when the optical lens 100 is applied to terminal devices such as smartphones and tablets, the first lens L1, second lens L2, third lens L3, fourth lens L4, fifth lens L5, sixth lens L6, and seventh lens L7 can be made of plastic to reduce the overall weight of the optical lens 100.

[0035] In some embodiments, spherical lenses are considered to have the advantages of simple manufacturing process and low production cost, and they also allow for flexible design of lens surface shape, thereby improving the imaging resolution of optical lens 100. Aspherical lenses allow for more flexible design of the object side or image side of the lens, enabling the lens to effectively solve problems such as unclear imaging, distorted field of view, or narrow field of view even when the lens is small and thin. Furthermore, optical lens 100 does not need to use too many lenses to achieve good image quality, which is beneficial for shortening the length of optical lens 100. Based on this, the first lens L1, second lens L2, third lens L3, fourth lens L4, fifth lens L5, and sixth lens L6 can be spherical lenses, and the seventh lens L7 can be an aspherical lens. This combination of spherical and aspherical surfaces not only improves the manufacturability of each lens and facilitates surface design, but also allows for more flexible design of the object-side or image-side surfaces of the lenses. This enables each lens to effectively address issues such as unclear imaging, distorted field of view, or narrow field of view even with smaller and thinner dimensions. Furthermore, the optical lens 100 achieves good image quality and high resolution without requiring an excessive number of lenses, while also reducing the length of the optical lens 100. It is understood that in other embodiments, the surfaces of each lens in the optical lens 100 can be entirely spherical, entirely aspherical, or any combination of spherical and aspherical surfaces, depending on actual needs. Therefore, this embodiment does not impose specific limitations.

[0036] In some embodiments, the optical lens 100 further includes an aperture stop STO, which is disposed between the image-side surface S8 of the fourth lens L4 and the object-side surface S9 of the fifth lens L5. The aperture stop STO can be an aperture stop and / or a field stop; for example, the aperture stop STO can be an aperture stop, or it can be a field stop, or it can be both an aperture stop and a field stop. By disposing the aperture stop STO between the image-side surface S8 of the fourth lens L4 and the object-side surface S9 of the fifth lens L5, it is beneficial to effectively converge the light entering the optical lens 100, thereby reducing the overall optical length and the front aperture of the optical lens 100. It is understood that in other embodiments, the aperture stop STO can also be disposed between other lenses, and the specific setting can be adjusted according to the actual situation. This embodiment does not specifically limit this.

[0037] In some embodiments, the optical lens 100 further includes an infrared filter IR, which is disposed between the image-side surface S14 of the seventh lens L7 and the imaging surface IMG of the optical lens 100. Optionally, the infrared filter IR can be an infrared cut-off filter to filter out infrared light and allow visible light to pass through, making the image more consistent with the visual experience of the human eye, thereby improving image quality. In other embodiments, the infrared filter IR can be an infrared bandpass filter to allow infrared light to pass through and reflect visible light, thereby achieving infrared imaging of the optical lens 100, enabling the optical lens 100 to image in low-light environments or special application scenarios and obtain better image quality. It is understood that the infrared filter IR can be made of plastic, optical glass with coating, or other materials, and can be selected according to actual needs. This embodiment does not impose specific limitations.

[0038] In some embodiments, the optical lens 100 also includes a protective glass CG, which is disposed between the filter IR and the imaging surface IMG of the optical lens 100, thereby protecting the photosensitive chip from dust. The protective glass CG can be made of plastic, optical glass with a coating, or other materials, and can be selected according to actual needs; no specific limitation is made in this embodiment. It is understood that the protective glass CG can be part of the optical lens 100 or can be removed from the optical lens 100, but when the protective glass CG is removed, the total optical length of the optical lens 100 remains unchanged.

[0039] In some embodiments, the optical lens 100 satisfies the relationship: 190° ≤ FOV ≤ 210°. Here, FOV is the maximum field of view of the optical lens 100. Specifically, FOV can be 190°, 191°, 192°, 193°, 194°, 195°, 196°, 197°, 198°, 199°, 200°, 201°, 202°, ​​203°, 204°, 205°, 206°, 207°, 208°, 209°, 210°, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of FOV, the optical lens 100 has a large field of view, meeting the wide-angle requirement of the optical lens 100, thereby acquiring richer information about the subject and achieving good optical performance and high imaging optical quality.

[0040] In some embodiments, the optical lens 100 satisfies the relationship: 14 ≤ TTL / F ≤ 16. Where TTL is the distance on the optical axis O from the object-side surface S1 of the first lens L1 to the imaging surface IMG of the optical lens 100, and F is the effective focal length of the optical lens 100. Further, 14.1 ≤ TTL / F ≤ 15.9. Specifically, TTL / F can be 14, 14.1, 14.15, 14.154, 14.2, 14.3, 14.4, 14.5, 14.6, 14.7, 14.8, 14.9, 15, 15.1, 15.2, 15.3, 15.4, 15.5, 15.6, 15.7, 15.8, 15.89, 15.898, 15.9, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the TTL / F range, the optical assembly and focal length of the optical lens 100 can be reasonably controlled, which is conducive to the miniaturization design of the optical lens 100. At the same time, it is conducive to the better convergence of light onto the imaging surface IMG of the optical lens 100, thereby improving the imaging quality of the optical lens 100.

[0041] In some embodiments, the optical lens 100 satisfies the relationship: 7.5 ≤ TTL / IMGH ≤ 8. Wherein, IMGH is half the image height corresponding to the maximum field of view of the optical lens 100. Further, 7.6 ≤ TTL / IMGH ≤ 7.8. Specifically, TTL / IMGH can be 7.5, 7.51, 7.53, 7.55, 7.58, 7.59, 7.6, 7.62, 7.64, 7.68, 7.69, 7.7, 7.74, 7.78, 7.787, 7.79, 7.8, 7.81, 7.83, 7.85, 7.87, 7.89, 7.9, 7.91, 7.93, 7.95, 7.97, 7.98, 7.99, 8, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the TTL / IMGH range, the optical lens 100 can be adapted to a high-pixel photosensitive element, which is beneficial to improving the resolution of the optical lens 100. At the same time, under a certain image height, by controlling the ratio of the image height to the total optical length of the optical lens 100, the optical lens 100 can be limited to have a small total optical length, which is beneficial to miniaturization. However, when the TTL / IMGH range exceeds the upper limit of 8, the side length of the total optical length of the optical lens 100 increases, resulting in a larger front lens, which is not conducive to miniaturization. When the TTL / IMGH range exceeds the lower limit of 7.5, although miniaturization can be achieved, the difference correction of the optical lens 100 becomes difficult.

[0042] In some embodiments, the optical lens 100 satisfies the relationship: 1.8 ≤ IMGH / F ≤ 2.1. Further, 1.83 ≤ IMGH / F ≤ 2.09. Specifically, IMGH / F can be 1.8, 1.81, 1.83, 1.832, 1.85, 1.87, 1.89, 1.9, 1.91, 1.93, 1.95, 1.97, 1.99, 2, 2.01, 2.03, 2.05, 2.07, 2.08, 2.086, 2.09, 2.1, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of IMGH / F, the optical lens 100 can achieve the requirement of high pixel count, which is beneficial to improving the imaging quality of the optical lens 100. However, when the IMGH / F exceeds the upper limit of 2.1, the effective focal length of the optical lens 100 becomes smaller and the angle of view becomes larger, making it difficult to correct for aberration. When the IMGH / F exceeds the lower limit of 1.8, the effective focal length of the optical lens 100 becomes larger and it becomes difficult to maintain the angle of view. If the angle of view is maintained first, it will lead to a larger field curvature aberration, which in turn will degrade the surrounding resolution capability, making it difficult to guarantee the pixel count.

[0043] In some embodiments, the optical lens 100 satisfies the relationship: 95° ≤ FOV / FNO ≤ 105°. Here, FNO is the aperture number of the optical lens 100. Specifically, FOV / FNO can be 95°, 95.5°, 96°, 96.5°, 97°, 97.5°, 98°, 98.5°, 99°, 99.5°, 100°, 100.5°, 101°, 101.5°, 102°, 102.5°, 103°, 103.5°, 104°, 104.5°, 105°, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of FOV / FNO, while maintaining a large field of view, the aperture number of the optical lens 100 can be reduced, which is beneficial for achieving a miniaturized design of the optical lens 100 and reducing costs.

[0044] In some embodiments, the optical lens 100 satisfies the relationship: 1.7 ≤ CT12 / CT1 ≤ 2.7. Wherein, CT12 is the distance on the optical axis O between the image-side surface S2 of the first lens L1 and the object-side surface S3 of the second lens L2, and CT1 is the thickness of the first lens L1 on the optical axis O. Further, 1.73 ≤ CT12 / CT1 ≤ 2.68. Specifically, CT12 / CT1 can be 1.7, 1.71, 1.73, 1.75, 1.77, 1.79, 1.8, 1.82, 1.85, 1.89, 1.9, 1.95, 2, 2.05, 2.1, 2.15, 2.2, 2.25, 2.3, 2.35, 2.4, 2.45, 2.5, 2.55, 2.6, 2.65, 2.68, 2.69, 2.7, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of CT12 / CT1, it is beneficial to reduce the amount of deformation generated during the lens assembly process, reduce the assembly difficulty, reduce the size of the optical lens 100, achieve miniaturization, and improve the field curvature aberration of the off-axis field of view.

[0045] In some embodiments, the optical lens 100 satisfies the relationship: 3.7 ≤ R3 / R4 ≤ 35. Here, R3 is the radius of curvature of the object-side surface S3 of the second lens L2 at the optical axis O, and R4 is the radius of curvature of the image-side surface S4 of the second lens L2 at the optical axis O. Further, 3.9 ≤ R3 / R4 ≤ 30.3. Specifically, R3 / R4 can be 3.7, 3.8, 3.9, 4, 6, 8, 10, 15, 18, 20, 23, 25, 28, 29, 30, 30.3, 31, 35, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of R3 / R4, the surface shape of the second lens L2 can be reasonably configured to reduce the tolerance sensitivity of the second lens L2 and improve the forming yield of the second lens L2. However, when the range of R3 / R4 exceeds the upper limit of 50, the refractive power of the second lens L2 is insufficient, the back focal length is reduced, and the processability of the second lens L2 deteriorates. When the range of R3 / R4 exceeds the lower limit of 3.7, the refractive power of the second lens L2 increases, resulting in a larger field curvature aberration and an increase in the total optical length, which is not conducive to the miniaturization of the optical lens 100.

[0046] In some embodiments, the optical lens 100 satisfies the relationship: -5 ≤ F2 / F ≤ -2.6. Here, F2 is the effective focal length of the second lens L2. Further, -4.92 ≤ F2 / F ≤ -2.7. Specifically, F2 / F can be -5, -4.95, -4.92, -4.9, -4.8, -4.7, -4.6, -4.4, -4.2, -4, -3.9, -3.8, -3.7, -3.6, -3.5, -3.4, -3.3, -3.2, -3.1, -3, -2.9, -2.8, -2.786, -2.7, -2.6, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of F2 / F, it is beneficial to control the light rays passing through the first lens L1 to enter the third lens L3 appropriately, which is beneficial to correcting the aberrations generated by the first lens L1 and reducing tolerance sensitivity. However, when the range of F2 / F exceeds the upper limit of -2.6, the refractive power of the second lens L2 is insufficient, which increases the total optical length; when the range of F2 / F exceeds the lower limit of -5, the refractive power of the second lens L2 increases, resulting in a reduction in the rear foot, which is not conducive to the matching of the optical lens 100 with the photosensitive chip.

[0047] In some embodiments, the optical lens 100 satisfies the relationship: 0.4 ≤ CT3 / CT23 ≤ 1.1. Wherein, CT3 is the thickness of the third lens L3 on the optical axis O, and CT23 is the distance on the optical axis O between the image-side surface S4 of the second lens L2 and the object-side surface S5 of the third lens L3. Further, 0.47 ≤ CT3 / CT23 ≤ 1.09. Specifically, CT3 / CT23 can be 0.4, 0.41, 0.43, 0.45, 0.47, 0.49, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, 1, 1.01, 1.03, 1.05, 1.07, 1.09, 1.1, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of CT3 / CT23, the thickness of the third lens L3 on the optical axis O can be reasonably set, which helps to simplify the surface shape settings of the second lens L2 and the third lens L3, so that the second lens L2 and the third lens L3 can be adjusted to each other and reduce aberrations; at the same time, the interval between the second lens L2 and the third lens L3 on the optical axis O is also reasonably set, which helps to control the incident angle of light and maintain the miniaturized characteristics of the optical lens 100.

[0048] In some embodiments, the optical lens 100 satisfies the relationship: 1.5 ≤ R5 / R6 ≤ 4.8. Wherein, R5 is the radius of curvature of the object-side surface S5 of the third lens L3 at the optical axis O, and R6 is the radius of curvature of the image-side surface S6 of the third lens L3 at the optical axis O. Further, 1.7 ≤ R5 / R6 ≤ 4.6. Specifically, R5 / R6 can be 1.5, 1.6, 1.7, 1.8, 1.9, 2, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4, 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 4.7, 4.8, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of R5 / R6, the ratio of the curvature radii of the object side S5 and the image side S6 of the third lens L3 is controlled within a certain range, which is beneficial for the smooth transition of light to the rear, reducing the aberration of the optical lens 100 and improving the resolution of the optical lens 100. However, when the range of R5 / R6 exceeds the upper limit of 4.8, the refractive power of the third lens L3 is insufficient, the back focal length is reduced, and the manufacturability of the third lens L3 deteriorates; when the range of R5 / R6 exceeds the lower limit of 1.5, the refractive power of the third lens L3 increases, resulting in an increase in field curvature aberration, and at the same time, an increase in the optical assembly size.

[0049] In some embodiments, the optical lens 100 satisfies the relationship: -10 ≤ F3 / F ≤ -3. Here, F3 is the effective focal length of the third lens L3. Further, -9.3 ≤ F3 / F ≤ -3.2. Specifically, F3 / F can be -10, -9.9, -9.7, -9.5, -9.3, -9.1, -9, -8.5, -8, -7.5, -7, -6.5, -6, -5.5, -5, -4.5, -4, -3.7, -3.5, -3.3, -3.2, -3.1, -3, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of F3 / F, the incident light from the front can be effectively collected and compressed, allowing the light to smoothly transition to the rear optical lens 100, reducing aberrations, and thus improving the imaging quality of the optical lens 100. However, when the range of F3 / F exceeds the upper limit of -3, the refractive power of the third lens L3 is insufficient, which also leads to an increase in the total optical length; when the range of F3 / F exceeds the lower limit of -10, the refractive power of the third lens L3 increases, which leads to a reduction in back focal length, which is not conducive to the matching of the optical lens 100 with the image sensor.

[0050] In some embodiments, the optical lens 100 satisfies the relationship: 3 ≤ TTL / CT4 ≤ 4.2. Here, CT4 is the thickness of the fourth lens L4 on the optical axis O. Further, 3.1 ≤ TTL / CT4 ≤ 4.11. Specifically, TTL / CT4 can be 3, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4, 4.1, 4.11, 4.15, 4.19, 4.2, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of TTL / CT4, the ratio of the total optical length of the optical lens 100 to the center thickness of the fourth lens L4 can be controlled. This facilitates the rational allocation of the entire space of the optical lens 100, resulting in a more compact structure and enabling miniaturized design of the optical lens 100. However, when the range of TTL / CT4 exceeds the upper limit of 4.2, the chromatic aberration correction of the fourth lens L4 is insufficient, which is not conducive to the optical lens 100 achieving high resolution; when the range of TTL / CT4 exceeds the lower limit of 3, the chromatic aberration correction of the fourth lens L4 is excessive, which is not conducive to the miniaturization of the optical lens 100.

[0051] In some embodiments, the optical lens 100 satisfies the relationship: 3 ≤ CT4 / F ≤ 5. Further, 3.4 ≤ CT4 / F ≤ 4.7. Specifically, CT4 / F can be 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4, 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 4.7, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of CT4 / F, the field curvature and astigmatism of the optical lens 100 can be corrected while ensuring the reasonable structure of the fourth lens L4. However, when the range of CT4 / F exceeds the upper limit of 5, the chromatic aberration correction of the fourth lens L4 is excessive, which is not conducive to the miniaturization of the optical lens 100; when the range of CT4 / F exceeds the lower limit of 3, the chromatic aberration correction of the fourth lens L4 is excessive, which is not conducive to the high pixel count of the optical lens 100.

[0052] In some embodiments, the optical lens 100 satisfies the relationship: 2.4 ≤ F4 / F ≤ 3.1, where F4 is the effective focal length of the fourth lens L4. Further, 2.48 ≤ F4 / F ≤ 2.98. Specifically, F4 / F can be 2.4, 2.42, 2.44, 2.46, 2.48, 2.5, 2.55, 2.6, 2.65, 2.7, 2.75, 2.8, 2.85, 2.9, 2.95, 2.98, 3, 3.01, 3.03, 3.05, 3.07, 3.09, 3.1, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of F4 / F, it is beneficial to reasonably configure the focal length of the fourth lens L4, effectively correcting the aberrations of the optical lens 100, and improving the imaging quality of the optical lens 100. However, when the range of F4 / F exceeds the upper limit of 3.1, the refractive power of the fourth lens L4 is insufficient; when the range of F4 / F exceeds the lower limit of 2.4, the chromatic aberration correction of the fourth lens L4 is excessive, which is not conducive to the optical lens 100 achieving high resolution.

[0053] In some embodiments, the optical lens 100 satisfies the relationship: -2 ≤ F5 / F6 ≤ -1.3. Here, F5 is the effective focal length of the fifth lens L5, and F6 is the effective focal length of the sixth lens L6. Further, -1.9 ≤ F5 / F6 ≤ -1.4. Specifically, F5 / F6 can be -2, -1.95, -1.9, -1.85, -1.8, -1.75, -1.7, -1.65, -1.6, -1.55, -1.5, -1.45, -1.4, -1.35, -1.3, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of F5 / F6, the spherical aberration contribution of the fifth lens L5 and the sixth lens L6 can be kept within a reasonable range, which also helps to improve the imaging quality of the optical lens 100 in the field of view area on the optical axis O. However, when the range of F5 / F6 exceeds the upper limit of -1.3, the refractive power of the fifth lens L5 is insufficient, resulting in excessive chromatic aberration correction of the optical lens 100 and an increase in the total optical length. When the range of F5 / F6 exceeds the lower limit of -2, the refractive power of the fifth lens L5 increases, resulting in insufficient chromatic aberration correction of the optical lens and a reduction in back focal length, which is not conducive to the matching of the optical lens 100 with the image sensor.

[0054] In some embodiments, the optical lens 100 satisfies the relationship: 2 ≤ F5 / F ≤ 2.9. Further, 2.2 ≤ F5 / F ≤ 2.8. Specifically, F5 / F can be 2, 2.05, 2.1, 2.15, 2.2, 2.25, 2.3, 2.35, 2.4, 2.45, 2.5, 2.55, 2.6, 2.65, 2.7, 2.75, 2.8, 2.85, 2.9, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of F5 / F, excessive spherical aberration introduced by the fifth lens L5 can be avoided and aberrations can be effectively corrected, reducing tolerance sensitivity and improving the resolution of the optical lens 100. Simultaneously, the overall optical length of the optical lens 100 can be controlled, facilitating miniaturization of the optical lens 100. However, when the range of F5 / F exceeds the upper limit of 2.9, the refractive power of the fifth lens L5 is insufficient, resulting in an increase in the total optical length; when the range of F5 / F exceeds the lower limit of 2, the refractive power of the fifth lens L5 increases, resulting in insufficient chromatic aberration correction of the optical path and a reduction in back focus, which is not conducive to the matching of the optical lens 100 with the image sensor.

[0055] In some embodiments, the optical lens 100 satisfies the relationship: 2.1 ≤ CT5 / CT6 ≤ 2.82. Wherein, CT5 is the thickness of the fifth lens L5 on the optical axis O, and CT6 is the thickness of the sixth lens L6 on the optical axis O. Further, 2.109 ≤ CT5 / CT6 ≤ 2.811. Specifically, CT5 / CT6 can be 2.1, 2.109, 2.11, 2.15, 2.2, 2.25, 2.3, 2.35, 2.4, 2.45, 2.5, 2.55, 2.6, 2.65, 2.7, 2.75, 2.8, 2.81, 2.811, 2.815, 2.819, 2.82, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of CT5 / CT6, it is beneficial to shorten the arrangement space of the fifth lens L5 and the sixth lens L6 in the optical lens 100, thereby maintaining the miniaturization of the optical lens 100.

[0056] In some embodiments, the optical lens 100 satisfies the relationship: -4 ≤ R13 / R14 ≤ -1. Wherein, R13 is the radius of curvature of the object-side surface S13 of the seventh lens L7 at the optical axis O, and R14 is the radius of curvature of the image-side surface S14 of the seventh lens L7 at the optical axis O. Further, -3.7 ≤ R13 / R14 ≤ -1.1. Specifically, R13 / R14 can be -4, -3.9, -3.8, -3.7, -3.6, -3.5, -3.4, -3.3, -3.2, -3.1, -3, -2.9, -2.8, -2.7, -2.6, -2.5, -2.4, -2.3, -2.2, -2.1, -2, -1.9, -1.8, -1.7, -1.6, -1.5, -1.4, -1.3, -1.2, -1.1, -1, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of R13 / R14, the ratio of the curvature radius of the object side S13 and the image side S14 of the last lens is controlled within a certain range, ensuring miniaturization while reducing ghosting at the last lens.

[0057] In some embodiments, the optical lens 100 satisfies the relationship: 1.55 ≤ SD14 / IMGH ≤ 1.85. Wherein, SD14 is half the maximum effective aperture of the image-side surface S14 of the seventh lens L7. Further, 1.56 ≤ SD14 / IMGH ≤ 1.84. Specifically, SD14 / IMGH can be 1.55, 1.56, 1.57, 1.58, 1.59, 1.6, 1.61, 1.62, 1.63, 1.64, 1.65, 1.66, 1.67, 1.68, 1.69, 1.7, 1.71, 1.72, 1.73, 1.74, 1.75, 1.76, 1.77, 1.78, 1.79, 1.8, 1.81, 1.82, 1.83, 1.84, 1.85, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of SD14 / IMGH, half of the maximum effective aperture of the image side surface S14 of the seventh lens L7 can be adapted to the imaging surface IMG of the optical lens 100, thereby enabling more light to enter the imaging surface IMG of the optical lens 100 from the seventh lens L7, which is beneficial to improving the imaging quality of the optical lens 100.

[0058] In some embodiments, the optical lens 100 satisfies the relationship: 4.9 ≤ SD1 / IMGH ≤ 5.21. Wherein, SD1 is half the maximum effective aperture of the object-side surface 1S of the first lens L1. Further, 4.95 ≤ SD1 / IMGH ≤ 5.208. Specifically, SD1 / IMGH can be 4.9, 4.91, 4.92, 4.93, 4.94, 4.95, 4.96, 4.97, 4.98, 4.99, 5, 5.01, 5.02, 5.03, 5.04, 5.05, 5.06, 5.07, 5.08, 5.09, 5.1, 5.11, 5.12, 5.13, 5.14, 5.15, 5.16, 5.17, 5.18, 5.19, 5.2, 5.208, 5.21, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of SD1 / IMGH, the optical lens 100 can be adapted to a larger photosensitive chip under a smaller space constraint, thereby improving the imaging quality of the optical lens 100; at the same time, the limitation of the above relationship can make full use of the internal space of the first lens L1, thereby improving the compactness of the optical lens 100 and realizing the miniaturization design of the optical lens 100.

[0059] In some embodiments, the optical lens 100 satisfies the relationship: 100° ≤ FOV*F / IMGH ≤ 110°. Further, 100.6° ≤ FOV*F / IMGH ≤ 107°. Specifically, FOV*F / IMGH can be 100°, 100.1°, 100.3°, 100.5°, 100.6°, 100.8°, 101°, 101.5°, 102°, 102.5°, 103°, 103.5°, 104°, 104.5°, 105°, 105.5°, 106°, 106.5°, 107°, 107.5°, 108°, 108.5°, 109°, 109.5°, 110°, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of FOV*F / IMGH, the optical lens 100 can maintain good optical performance, achieving the characteristics of a large angle of view, a large image plane, and high pixel count. This allows it to capture the details of the subject well and also effectively suppresses distortion, enabling the optical lens 100 to have a large angle of view while maintaining a low risk of distortion. However, when the range of FOV*F / IMGH exceeds the upper limit of 110°, the angle of view of the optical lens 100 becomes larger, making it difficult to ensure the optical performance of the optical lens 100, and also requiring an increase in the size of the front lens of the optical lens 100. When the range of FOV*F / IMGH exceeds the lower limit of 100°, ensuring the angle of view of the optical lens 100 becomes difficult.

[0060] In some embodiments, the optical lens 100 satisfies the relationship: 2 ≤ ∑CT / ∑AT ≤ 3.4. Wherein, ∑CT is the sum of the thicknesses of each lens from the first lens L1 to the seventh lens L7 along the optical axis O, and ∑AT is the sum of the air gaps between adjacent lenses from the first lens L1 to the seventh lens L7 along the optical axis O. Further, 2.04 ≤ ∑CT / ∑AT ≤ 3.37. Specifically, ∑CT / ∑AT can be 2, 2.02, 2.04, 2.08, 2.1, 2.15, 2.2, 2.25, 2.3, 2.35, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3, 3.05, 3.1, 3.15, 3.2, 3.25, 3.3, 3.35, 3.37, 3.39, 3.4, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of ∑CT / ∑AT, it is beneficial to reasonably control the distance between each lens, making the structure of the optical lens 100 compact and facilitating miniaturization.

[0061] In some embodiments, the optical lens 100 satisfies the relationship: 1.6 ≤ BFL / F ≤ 2.2. Wherein, BFL is the minimum distance between the image-side surface S14 of the seventh lens L7 and the imaging surface IMG of the optical lens 100 in the direction parallel to the optical axis O. Further, 1.604 ≤ BFL / F ≤ 2.14. Specifically, BFL / F can be 1.6, 1.602, 1.604, 1.608, 1.61, 1.62, 1.63, 1.64, 1.65, 1.66, 1.68, 1.69, 1.7, 1.75, 1.8, 1.85, 1.9, 1.95, 2, 2.05, 2.1, 2.14, 2.15, 2.18, 2.19, 2.2, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of BFL / F, the ratio of the back focal length of the optical lens 100 to the effective focal length of the optical lens 100 can be controlled, which is beneficial to reasonably control the back focal length and ensure the matching performance between the optical lens 100 and the image sensor.

[0062] In some embodiments, the optical lens 100 satisfies the relationship: -6.7 ≤ F1 / F ≤ -4.5, where F1 is the effective focal length of the first lens L1. Further, -6.63 ≤ F1 / F ≤ -4.7. Specifically, F1 / F can be -6.7, -6.65, -6.63, -6.6, -6.55, -6.5, -6.4, -6.3, -6.2, -6.1, -6, -5.9, -5.8, -5.7, -5.6, -5.5, -5.4, -5.3, -5.2, -5.1, -5, -4.9, -4.8, -4.7, -4.6, -4.5, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of F1 / F, light bias can be effectively controlled, tolerance sensitivity can be reduced, thereby effectively improving the imaging quality of the optical lens 100. It also allows for control of the overall optical length of the optical lens 100, which facilitates the miniaturization of the optical lens 100.

[0063] In some embodiments, the optical lens 100 satisfies the relationship: -1.8 ≤ F6 / F ≤ -1.3. Further, -1.795 ≤ F6 / F ≤ -1.38. Specifically, F6 / F can be -1.8, -1.795, -1.79, -1.78, -1.77, -1.75, -1.73, -1.71, -1.7, -1.65, -1.6, -1.55, -1.5, -1.45, -1.4, -1.39, -1.38, -1.37, -1.36, -1.35, -1.34, -1.33, -1.32, -1.31, -1.3, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of F6 / F, it is beneficial to improve the resolution of the optical lens 100 and achieve high-pixel imaging.

[0064] In some embodiments, the optical lens 100 satisfies the relationship: 2.4 ≤ F7 / F ≤ 3.3. Here, F7 is the effective focal length of the seventh lens L7. Further, 2.44 ≤ F7 / F ≤ 3.28. Specifically, F7 / F can be 2.4, 2.42, 2.44, 2.46, 2.48, 2.5, 2.6, 2.7, 2.8, 2.9, 3, 3.1, 3.15, 3.2, 3.25, 3.28, 3.3, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of F7 / F, it is beneficial to reasonably distribute the overall refractive power of the optical lens 100, improve the resolution of the optical lens 100, and achieve high-pixel imaging of the optical lens 100.

[0065] In some embodiments, the optical lens 100 satisfies the relationship: 2.3 ≤ R1 / R2 ≤ 2.85. Where R1 is the radius of curvature of the object-side surface S1 of the first lens L1 at the optical axis O, and R2 is the radius of curvature of the image-side surface S2 of the first lens L1 at the optical axis O. Further, 2.32 ≤ R1 / R2 ≤ 2.83. Specifically, R1 / R2 can be 2.3, 2.31, 2.32, 2.35, 2.4, 2.45, 2.5, 2.55, 2.6, 2.65, 2.7, 2.75, 2.8, 2.81, 2.82, 2.83, 2.84, 2.85, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of R1 / R2, the effective aperture of the first lens L1 of the optical lens 100 can be effectively controlled, which is conducive to expanding the light-gathering range of the optical lens 100, increasing the amount of light transmitted, and making the light path transition smoothly.

[0066] In some embodiments, the optical lens 100 satisfies the relationship: -1.7 ≤ R7 / R8 ≤ -1. Here, R7 is the radius of curvature of the object-side surface S7 of the fourth lens L4 at the optical axis O, and R8 is the radius of curvature of the image-side surface S8 of the fourth lens L4 at the optical axis O. Further, -1.64 ≤ R7 / R8 ≤ -1. Specifically, R7 / R8 can be -1.7, -1.65, -1.64, -1.6, -1.55, -1.5, -1.45, -1.4, -1.35, -1.3, -1.25, -1.2, -1.15, -1.1, -1.05, -1, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of R7 / R8, the ratio of the curvature radius of the object side S7 and the image side S8 of the fourth lens L4 can be controlled within a certain range, thereby correcting the aberration of the optical lens 100 and ensuring that the light passing through the third lens L3 is smooth, thus reducing the tolerance sensitivity of the optical lens 100.

[0067] In some embodiments, the optical lens 100 satisfies the relationship: -1.7 ≤ R9 / R10 ≤ -0.7. Where R9 is the radius of curvature of the object-side surface S9 of the fifth lens L5 at the optical axis O, and R10 is the radius of curvature of the image-side surface S10 of the fifth lens L5 at the optical axis O. Further, -1.62 ≤ R9 / R10 ≤ -0.71. Specifically, R9 / R10 can be -1.7, -1.65, -1.62, -1.6, -1.55, -1.5, -1.45, -1.4, -1.35, -1.3, -1.25, -1.2, -1.15, -1.1, -1.05, -1, -0.95, -0.9, -0.85, -0.8, -0.75, -0.71, -0.7, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of R9 / R10, the ratio of the curvature radius of the object side S9 and the image side S10 of the fifth lens L5 is controlled within a certain range, which is beneficial to correct the aberration of the optical lens 100 and improve the resolution; at the same time, it is beneficial to shorten the total optical length of the optical lens 100 and to achieve miniaturization design.

[0068] In some embodiments, the optical lens 100 satisfies the relationship: -1.3 ≤ R11 / R12 ≤ -0.3. Where R11 is the radius of curvature of the object-side surface S11 of the sixth lens L6 at the optical axis O, and R12 is the radius of curvature of the image-side surface S12 of the sixth lens L6 at the optical axis O. Further, -1.28 ≤ R11 / R12 ≤ -0.303. Specifically, R11 / R12 can be -1.3, -1.29, -1.28, -1.26, -1.24, -1.22, -1.2, -1.15, -1.1, -1.05, -1, -0.95, -0.9, -0.85, -0.8, -0.75, -0.7, -0.65, -0.6, -0.55, -0.5, -0.45, -0.4, -0.35, -0.31, -0.303, -0.3, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of R11 / R12, the ratio of the curvature radii of the object side surface S11 and the image side surface S12 of the sixth lens L6 can be controlled within a certain range, which is beneficial to achieving miniaturization design.

[0069] In some embodiments, the fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens, which is beneficial for correcting chromatic aberration and balancing various aberrations, improving the resolving power of the optical lens 100, effectively reducing tolerance sensitivity, and improving the imaging quality of the optical lens 100; at the same time, it is beneficial for shortening the total optical length of the optical lens 100, which is conducive to achieving miniaturization design.

[0070] The surface shape of each aspherical lens can be defined using, but is not limited to, the following aspherical formulas:

[0071]

[0072] Where Z is the distance from the corresponding point on the aspherical surface to the plane tangent to the vertex of the surface, c is the curvature of the vertex of the aspherical surface, c = 1 / Y, Y is the radius of curvature (i.e., the paraxial curvature c is the reciprocal of the radius of Y in Table 1), r is the distance from any point on the aspherical surface to the optical axis O, k is the conic constant, and Ai is the coefficient corresponding to the i-th higher-order term in the aspherical surface shape formula.

[0073] The optical lens 100 of this embodiment will be described in detail below with reference to specific parameters.

[0074] First Embodiment

[0075] The structural schematic diagram of the optical lens 100 disclosed in the first embodiment of this application is shown below. Figure 1 As shown, the optical lens 100 includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, an aperture stop STO, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter IR, and a protective glass CG arranged sequentially along the optical axis O from the object side to the image side.

[0076] Furthermore, the first lens L1 has negative refractive power, the second lens L2 has negative refractive power, the third lens L3 has negative refractive power, the fourth lens L4 has positive refractive power, the fifth lens L5 has positive refractive power, the sixth lens L6 has negative refractive power, and the seventh lens L7 has positive refractive power.

[0077] Furthermore, the object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is concave near the optical axis O; the object-side surface S3 of the second lens L2 is convex near the optical axis O, and the image-side surface S4 of the second lens L2 is concave near the optical axis O; the object-side surface S5 of the third lens L3 is convex near the optical axis O, and the image-side surface S6 of the third lens L3 is concave near the optical axis O; the object-side surface S7 of the fourth lens L4 is convex near the optical axis O. The image-side surface S8 of the fourth lens L4 is convex near the optical axis O; the object-side surface S9 of the fifth lens L5 is convex near the optical axis O, and the image-side surface S10 of the fifth lens L5 is convex near the optical axis O; the object-side surface S11 of the sixth lens L6 is concave near the optical axis O, and the image-side surface S12 of the sixth lens L6 is concave near the optical axis O; the object-side surface S13 of the seventh lens L7 is convex near the optical axis O, and the image-side surface S14 of the seventh lens L7 is convex near the optical axis O.

[0078] Specifically, the Y-radius in Table 1a refers to the radius of curvature of the object-side or image-side surface of the corresponding surface number at the optical axis O. The first value in the "Thickness" parameter column for a lens is its thickness along the optical axis O, and the second value is the distance from the image-side surface of the lens to the next surface along the optical axis O. The value of the stop STO in the "Thickness" parameter column is the distance from the stop STO to the vertex of the next surface (the vertex being the intersection of the surface and the optical axis O) along the optical axis O. By default, the direction from the object-side surface S1 of the first lens L1 to the image-side surface S14 of the last lens is the positive direction of the optical axis O. When this value is negative, it indicates that the stop STO is set on the image side of the vertex of the next surface. If the thickness of the stop STO is positive, the stop STO is on the object side of the vertex of the next surface. It is understood that the units for the Y-radius, thickness, and effective focal length in Table 1a are all mm. Furthermore, the reference wavelength for the refractive index, Abbe number, and effective focal length of each lens in Table 1a is 588.0000 nm.

[0079] In the first embodiment, the object side surface S13 and the image side surface S14 of the seventh lens L7 are both aspherical. Table 1b gives the conic constant k, higher-order coefficients A3, A4, A5, A6, A7, and A8 that can be used for the aspherical mirror S13 in the first embodiment, and the conic constant k, higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 for the aspherical mirror S14.

[0080] Table 1a

[0081]

[0082] Table 1b

[0083]

[0084]

[0085] Please see Figure 2 (A) in the middle Figure 2 Figure (A) shows longitudinal spherical aberration diagrams of the optical lens 100 in the first embodiment at wavelengths of 588.0000 nm, 486.0000 nm, and 656.0000 nm. The horizontal axis along the X-axis represents the focus shift in mm, and the vertical axis along the Y-axis represents the normalized field of view. Figure 2 As can be seen from (A) in the diagram, the optical lens 100 in the first embodiment has a better spherical aberration value, indicating that the optical lens 100 in this embodiment has better imaging quality. Please refer to [link / reference]. Figure 2 (B) in the middle Figure 2Figure (B) shows the astigmatism diagram of the optical lens 100 in the first embodiment at a wavelength of 588.0000 nm. The horizontal axis along the X-axis represents the focus shift in mm, and the vertical axis along the Y-axis represents the field of view in degrees. In the astigmatism diagram, T represents the curvature of the imaging plane IMG in the sub-arc direction, and S represents the curvature of the imaging plane IMG in the sagittal direction. Figure 2 As can be seen in (B) above, the astigmatism of optical lens 100 is well compensated at this wavelength. Please refer to [link / reference]. Figure 2 (C) in the middle, Figure 2 Figure (C) shows the distortion curve of the optical lens 100 in the first embodiment at a wavelength of 588.0000 nm. The horizontal axis along the X-axis represents distortion, and the vertical axis along the Y-axis represents the field of view, in degrees (deg). Figure 2 As can be seen from (C), the distortion of the optical lens 100 is well corrected at this wavelength.

[0086] Second Embodiment

[0087] The structural schematic diagram of the optical lens 100 disclosed in the second embodiment of this application is shown below. Figure 3 As shown, the structure of the optical lens 100, the refractive power of each lens, and the surface shape of each lens can be referred to the first embodiment. Other parameters in the second embodiment are given in Table 2a below, and the definitions of each parameter can be derived from the description of the aforementioned embodiments, and will not be repeated here. It is understood that the units for the Y-radius, thickness, and effective focal length in Table 2a are all mm. Furthermore, the reference wavelength for the refractive index, Abbe number, and effective focal length of each lens in Table 2a is 588.0000 nm. In the second embodiment, the object-side surface S13 and image-side surface S14 of the seventh lens L7 are both aspherical. Table 2b gives the conic constant k, higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for each aspherical mirror surface in the second embodiment.

[0088] Table 2a

[0089]

[0090]

[0091] Table 2b

[0092]

[0093] Please see Figure 4 ,Depend on Figure 4As can be seen from (A) the longitudinal spherical aberration diagram, (B) the astigmatism diagram, and (C) the distortion curve diagram, in the second embodiment, the longitudinal spherical aberration, astigmatism, and distortion of the optical lens 100 are all well controlled, thus the optical lens 100 of this embodiment has good imaging quality. Furthermore, regarding... Figure 4 (A) Figure 4 (B) and Figure 4 The wavelengths corresponding to the curves in (C) can be referred to in the first embodiment regarding... Figure 2 (A) in the middle Figure 2 (B) in the middle Figure 2 The content described in (C) will not be repeated here.

[0094] Third Embodiment

[0095] The structural schematic diagram of the optical lens 100 disclosed in the third embodiment of this application is shown below. Figure 5 As shown, the structure of the optical lens 100, the refractive power of each lens, and the surface shape of each lens can be referred to the first embodiment. Other parameters in the third embodiment are given in Table 3a below, and the definitions of each parameter can be derived from the description of the aforementioned embodiments, and will not be repeated here. It is understood that the units for the Y-radius, thickness, and effective focal length in Table 3a are all mm. Furthermore, the reference wavelength for the refractive index, Abbe number, and effective focal length of each lens in Table 3a is 588.0000 nm. In the third embodiment, the object-side surface S13 and image-side surface S14 of the seventh lens L7 are both aspherical. Table 3b gives the conic constant k, higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for each aspherical mirror surface in the third embodiment.

[0096] Table 3a

[0097]

[0098] Table 3b

[0099]

[0100]

[0101] Please see Figure 6 ,Depend on Figure 6 As can be seen from (A) the longitudinal spherical aberration diagram, (B) the astigmatism diagram, and (C) the distortion curve diagram, in the third embodiment, the longitudinal spherical aberration, astigmatism, and distortion of the optical lens 100 are all well controlled, thus the optical lens 100 of this embodiment has good imaging quality. Furthermore, regarding... Figure 6 (A) Figure 6 (B) and Figure 6 The wavelengths corresponding to the curves in (C) can be referred to in the first embodiment regarding... Figure 2 (A) in the middle Figure 2 (B) in the middle Figure 2 The content described in (C) will not be repeated here.

[0102] Fourth embodiment

[0103] The structural schematic diagram of the optical lens 100 disclosed in the fourth embodiment of this application is shown below. Figure 7 As shown, the structure of the optical lens 100, the refractive power of each lens, and the surface shape of each lens can be referred to the first embodiment. Other parameters in the fourth embodiment are given in Table 4a below, and the definitions of each parameter can be derived from the description of the aforementioned embodiments, and will not be repeated here. It is understood that the units for the Y-radius, thickness, and effective focal length in Table 4a are all mm. Furthermore, the reference wavelength for the refractive index, Abbe number, and effective focal length of each lens in Table 4a is 588.0000 nm. In the fourth embodiment, the object-side surface S13 and image-side surface S14 of the seventh lens L7 are both aspherical. Table 4b gives the conic constant k and higher-order coefficients A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15, and A16 that can be used for each aspherical mirror surface in the fourth embodiment.

[0104] Table 4a

[0105]

[0106] Table 4b

[0107]

[0108] Please see Figure 8 ,Depend on Figure 8 As can be seen from (A) the longitudinal spherical aberration diagram, (B) the astigmatism diagram, and (C) the distortion curve diagram, in the fourth embodiment, the longitudinal spherical aberration, astigmatism, and distortion of the optical lens 100 are all well controlled, thus the optical lens 100 of this embodiment has good imaging quality. Furthermore, regarding... Figure 8 (A) Figure 8 (B) and Figure 8 The wavelengths corresponding to the curves in (C) can be referred to in the first embodiment regarding... Figure 2 (A) in the middle Figure 2 (B) in the middle Figure 2 The content described in (C) will not be repeated here.

[0109] Fifth embodiment

[0110] The structural schematic diagram of the optical lens 100 disclosed in the fifth embodiment of this application is shown below. Figure 9As shown, the structure of the optical lens 100, the refractive power of each lens, and the surface shape of each lens can be referred to the first embodiment. Other parameters in the fifth embodiment are given in Table 5a below, and the definitions of each parameter can be derived from the description of the foregoing embodiments, and will not be repeated here. It is understood that the units for the Y-radius, thickness, and effective focal length in Table 5a are all mm. Furthermore, the reference wavelength for the refractive index, Abbe number, and effective focal length of each lens in Table 5a is 588.0000 nm. In the fifth embodiment, the object-side surface S13 and image-side surface S14 of the seventh lens L7 are both aspherical. Table 5b gives the conic constant k and higher-order coefficients A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15, and A16 that can be used for each aspherical mirror surface in the fifth embodiment.

[0111] Table 5a

[0112]

[0113] Table 5b

[0114]

[0115] Please see Figure 10 ,Depend on Figure 10 As can be seen from (A) the longitudinal spherical aberration diagram, (B) the astigmatism diagram, and (C) the distortion curve diagram, in the fifth embodiment, the longitudinal spherical aberration, astigmatism, and distortion of the optical lens 100 are all well controlled, thus the optical lens 100 of this embodiment has good imaging quality. Furthermore, regarding... Figure 10 (A) Figure 10 (B) and Figure 10 The wavelengths corresponding to the curves in (C) can be referred to in the first embodiment regarding... Figure 2 (A) in the middle Figure 2 (B) in the middle Figure 2 The content described in (C) will not be repeated here.

[0116] Sixth Embodiment

[0117] The structural schematic diagram of the optical lens 100 disclosed in the sixth embodiment of this application is shown below. Figure 11As shown, the structure of the optical lens 100, the refractive power of each lens, and the surface shape of each lens can be referred to the first embodiment. Other parameters in the sixth embodiment are given in Table 6a below, and the definitions of each parameter can be derived from the description of the foregoing embodiments, and will not be repeated here. It is understood that the units for the Y-radius, thickness, and effective focal length in Table 6a are all mm. Furthermore, the reference wavelength for the refractive index, Abbe number, and effective focal length of each lens in Table 6a is 588.0000 nm. In the sixth embodiment, the object-side surface S13 and image-side surface S14 of the seventh lens L7 are both aspherical. Table 6b gives the conic constant k, higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for each aspherical mirror surface in the sixth embodiment.

[0118] Table 6a

[0119]

[0120] Table 6b

[0121] Face number K A4 A6 A8 A10 13 -6.368120E+00 -2.352970E-03 2.089790E-03 -1.328290E-03 7.402190E-04 14 1.493750E+00 5.254990E-03 2.078550E-03 -1.130330E-03 4.917090E-04 Face number A12 A14 A16 A18 A20 13 -2.329140E-04 3.737310E-05 -2.337410E-06 0.000000E+00 0.000000E+00 14 -9.887990E-05 9.346680E-06 -2.375900E-07 0.000000E+00 0.000000E+00

[0122] Please see Figure 12 ,Depend on Figure 12 As can be seen from (A) the longitudinal spherical aberration diagram, (B) the astigmatism diagram, and (C) the distortion curve diagram, in the sixth embodiment, the longitudinal spherical aberration, astigmatism, and distortion of the optical lens 100 are all well controlled, thus the optical lens 100 of this embodiment has good imaging quality. Furthermore, regarding... Figure 12 (A) Figure 12 (B) and Figure 12 The wavelengths corresponding to the curves in (C) can be referred to in the first embodiment regarding... Figure 2 (A) in the middle Figure 2 (B) in the middle Figure 2 The content described in (C) will not be repeated here.

[0123] Seventh Embodiment

[0124] The structural schematic diagram of the optical lens 100 disclosed in the seventh embodiment of this application is shown below. Figure 13As shown, the structure of the optical lens 100, the refractive power of each lens, and the surface shape of each lens can be referred to the first embodiment. Other parameters in the seventh embodiment are given in Table 7a below, and the definitions of each parameter can be derived from the description of the foregoing embodiments, and will not be repeated here. It is understood that the units for the Y-radius, thickness, and effective focal length in Table 7a are all mm. Furthermore, the reference wavelength for the refractive index, Abbe number, and effective focal length of each lens in Table 7a is 588.0000 nm. In the seventh embodiment, the object-side surface S13 and image-side surface S14 of the seventh lens L7 are both aspherical. Table 7b gives the conic constant k, higher-order coefficients A3, A4, A5, A6, A7, and A8 that can be used for the aspherical mirror surface S13 in the first embodiment, and the conic constant k, higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 for the aspherical mirror surface S14.

[0125] Table 7a

[0126]

[0127] Table 7b

[0128] Face number K A3 A4 A5 A6 13 -1.239660E+01 -1.910170E-04 4.800340E-03 -6.138670E-05 -5.142560E-05 14 -8.666660E-01 2.910410E-03 -3.548940E-06 Face number A7 A8 A10 A12 A14 13 -3.482640E-04 1.198020E-04 14 -1.525290E-05 9.062680E-06 -6.361060E-07 -1.122240E-07 Face number A16 A18 A20 14 1.517930E-08 0.000000E+00 0.000000E+00

[0129] Please see Figure 14 ,Depend on Figure 14 As can be seen from (A) the longitudinal spherical aberration diagram, (B) the astigmatism diagram, and (C) the distortion curve diagram, in the seventh embodiment, the longitudinal spherical aberration, astigmatism, and distortion of the optical lens 100 are all well controlled, thus the optical lens 100 of this embodiment has good imaging quality. Furthermore, regarding... Figure 14 (A) Figure 14 (B) and Figure 14 The wavelengths corresponding to the curves in (C) can be referred to in the first embodiment regarding... Figure 2 (A) in the middle Figure 2 (B) in the middle Figure 2 The content described in (C) will not be repeated here.

[0130] Eighth embodiment

[0131] The structural schematic diagram of the optical lens 100 disclosed in the eighth embodiment of this application is shown below. Figure 15As shown, the structure of the optical lens 100, the refractive power of each lens, and the surface shape of each lens can be referred to the first embodiment. Other parameters in the eighth embodiment are given in Table 8a below, and the definitions of each parameter can be derived from the description of the foregoing embodiments, and will not be repeated here. It is understood that the units for the Y-radius, thickness, and effective focal length in Table 8a are all mm. Furthermore, the reference wavelength for the refractive index, Abbe number, and effective focal length of each lens in Table 8a is 588.0000 nm. In the eighth embodiment, the object-side surface S13 and image-side surface S14 of the seventh lens L7 are both aspherical. Table 8b gives the conic constant k and higher-order coefficients A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15, and A16 that can be used for each aspherical mirror surface in the fourth embodiment.

[0132] Table 8a

[0133]

[0134] Table 8b

[0135] Face number K A3 A4 A5 A6 13 -4.38362E+01 -1.58636E-02 3.22726E-02 -1.26310E-02 -9.50628E-03 14 6.61016E-01 1.73422E-02 -8.15083E-03 -1.12520E-02 2.54575E-02 Face number A7 A8 A9 A10 A11 13 1.05750E-02 -1.51113E-03 -1.22376E-03 -1.59540E-04 3.90951E-04 14 -1.39709E-02 8.58787E-04 1.64176E-03 -3.42469E-05 -4.03422E-04 Face number A12 A13 A14 A15 A16 13 3.55443E-05 -7.83721E-05 5.98205E-06 5.11016E-06 -8.34522E-07 14 1.36544E-04 -3.27712E-06 -4.53138E-06 1.20731E-07 1.31973E-07

[0136] Please see Figure 16 ,Depend on Figure 16 As can be seen from (A) the longitudinal spherical aberration diagram, (B) the astigmatism diagram, and (C) the distortion curve diagram, in the eighth embodiment, the longitudinal spherical aberration, astigmatism, and distortion of the optical lens 100 are all well controlled, thus the optical lens 100 of this embodiment has good imaging quality. Furthermore, regarding... Figure 16 (A) Figure 16 (B) and Figure 16 The wavelengths corresponding to the curves in (C) can be referred to in the first embodiment regarding... Figure 2 (A) in the middle Figure 2 (B) in the middle Figure 2 The content described in (C) will not be repeated here.

[0137] Ninth Embodiment

[0138] The structural schematic diagram of the optical lens 100 disclosed in the ninth embodiment of this application is shown below. Figure 17As shown, the structure of the optical lens 100, the refractive power of each lens, and the surface shape of each lens can be referred to the first embodiment. Other parameters in the ninth embodiment are given in Table 9a below, and the definitions of each parameter can be derived from the description of the foregoing embodiments, and will not be repeated here. It is understood that the units for the Y-radius, thickness, and effective focal length in Table 9a are all mm. Furthermore, the reference wavelength for the refractive index, Abbe number, and effective focal length of each lens in Table 9a is 588.0000 nm. In the ninth embodiment, the object-side surface S13 and image-side surface S14 of the seventh lens L7 are both aspherical. Table 9b gives the conic constant k, higher-order coefficients A3, A4, A5, A6, A7, and A8 that can be used for the aspherical mirror surface S13 in the ninth embodiment, and the conic constant k, higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 for the aspherical mirror surface S14.

[0139] Table 9a

[0140]

[0141] Table 9b

[0142] Face number K A3 A4 A5 A6 13 -2.001970E+00 -2.893500E-03 1.338280E-03 -3.383190E-03 1.349750E-03 14 -1.430140E+00 2.275770E-03 1.711570E-04 Face number A7 A8 A10 A12 A14 13 1.288200E-03 -2.997370E-04 14 1.628620E-04 4.323120E-05 -1.733870E-06 -1.774390E-06 Face number A16 A18 A20 14 3.793980E-07 0.000000E+00 0.000000E+00

[0143] Please see Figure 18 ,Depend on Figure 18 As can be seen from (A) the longitudinal spherical aberration diagram, (B) the astigmatism diagram, and (C) the distortion curve diagram, in the ninth embodiment, the longitudinal spherical aberration, astigmatism, and distortion of the optical lens 100 are all well controlled, thus the optical lens 100 of this embodiment has good imaging quality. Furthermore, regarding... Figure 18 (A) Figure 18 (B) and Figure 18 The wavelengths corresponding to the curves in (C) can be referred to in the first embodiment regarding... Figure 2 (A) in the middle Figure 2 (B) in the middle Figure 2 The content described in (C) will not be repeated here.

[0144] Table 10 shows the values ​​of FOV, TTL / F, TTL / IMGH, IMGH / F, FOV / FNO, CT12 / CT1, R3 / R4, F2 / F, CT3 / CT23, R5 / R6, F3 / F, TTL / CT4, CT4 / F, F4 / F, F5 / F6, F5 / F, CT5 / CT6, R13 / R14, SD14 / IMGH, SD1 / IMGH, FOV*F / IMGH, ∑CT / ∑AT, BFL / F, F1 / F, F6 / F, F7 / F, R1 / R2, R7 / R8, R9 / R10, and R11 / R12 in the optical lenses 100 of the first to ninth embodiments.

[0145] Table 10

[0146]

[0147]

[0148] Please see Figure 19 This application also discloses a camera module 200, which includes a photosensitive chip 201 and the aforementioned optical lens 100. The photosensitive chip 201 is disposed on the image side of the optical lens 100. The optical lens 100 is used to receive the light signal of the subject and project it onto the photosensitive chip 201. The photosensitive chip 201 is used to convert the light signal corresponding to the subject into an image signal, which will not be elaborated here. It is understood that the camera module 200 with the aforementioned optical lens 100 also has all the technical effects of the aforementioned optical lens 100, that is, it can meet the requirements of balancing a large field of view and miniaturization, and can be adapted to photosensitive chips with higher pixels and larger sizes.

[0149] Please see Figure 20 This application also discloses a terminal device 300, which includes a housing 301 and the aforementioned camera module 200, with the camera module 200 disposed within the housing 300. The terminal device 300 can be, but is not limited to, automobiles, mobile phones, tablets, laptops, smartwatches, monitors, intelligent robots, and robotic vacuum cleaners. It is understood that the terminal device 300 with the aforementioned camera module 200 also possesses all the technical effects of the aforementioned optical lens 100, namely, it can meet the requirements of both a large field of view and miniaturization, and can be adapted to image sensors with higher pixel counts and larger sizes.

[0150] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. An optical lens, characterized in that, There are seven refractive lenses in total, arranged sequentially from the object side to the image side along the optical axis: The first lens has negative refractive power. The object side of the first lens is convex near the optical axis, and the image side of the first lens is concave near the optical axis. The second lens has negative refractive power. The object side of the second lens is convex near the optical axis, and the image side of the second lens is concave near the optical axis. The third lens has negative refractive power. The object side of the third lens is convex near the optical axis, and the image side of the third lens is concave near the optical axis. The fourth lens has positive refractive power. The object-side surface of the fourth lens is convex near the optical axis, and the image-side surface of the fourth lens is convex near the optical axis. The fifth lens has positive refractive power. The object-side surface of the fifth lens is convex near the optical axis, and the image-side surface of the fifth lens is convex near the optical axis. The sixth lens has negative refractive power. The object-side surface of the sixth lens is concave near the optical axis, and the image-side surface of the sixth lens is concave near the optical axis. The seventh lens has positive refractive power. The object-side surface of the seventh lens is convex near the optical axis, and the image-side surface of the seventh lens is convex near the optical axis. The optical lens satisfies the following relationship: 190°≤FOV≤210°; 14≤TTL / F≤16; 3≤CT4 / F≤5; Wherein, FOV is the maximum field of view of the optical lens, TTL is the distance on the optical axis from the object side of the first lens to the imaging surface of the optical lens, F is the effective focal length of the optical lens, and CT4 is the thickness of the fourth lens on the optical axis.

2. The optical lens as described in claim 1, characterized in that, The optical lens satisfies the following relationship: 7.5≤TTL / IMGH≤8; and / or, 1.8 ≤ IMGH / F ≤ 2.1; and / or, 95°≤FOV / FNO≤105°; Wherein, IMGH is half the image height corresponding to the maximum field of view of the optical lens, and FNO is the aperture number of the optical lens.

3. The optical lens as described in claim 1, characterized in that, The optical lens satisfies the following relationship: 1.7 ≤ CT12 / CT1 ≤ 2.7; and / or, 3.7≤R3 / R4≤35; and / or, -5≤F² / F≤-2.6; Wherein, CT12 is the distance on the optical axis between the image side of the first lens and the object side of the second lens, CT1 is the thickness of the first lens on the optical axis, R3 is the radius of curvature of the object side of the second lens on the optical axis, R4 is the radius of curvature of the image side of the second lens on the optical axis, and F2 is the effective focal length of the second lens.

4. The optical lens as described in claim 1, characterized in that, The optical lens satisfies the following relationship: 0.4 ≤ CT3 / CT23 ≤ 1.1; and / or, 1.5≤R5 / R6≤4.8; and / or, -10≤F3 / F≤-3; Wherein, CT3 is the thickness of the third lens on the optical axis, CT23 is the distance on the optical axis between the image side of the second lens and the object side of the third lens, R5 is the radius of curvature of the object side of the third lens on the optical axis, R6 is the radius of curvature of the image side of the third lens on the optical axis, and F3 is the effective focal length of the third lens.

5. The optical lens as described in claim 1, characterized in that, The optical lens satisfies the following relationship: 3≤TTL / CT4≤4.2; and / or, 2.4 ≤ F4 / F ≤ 3.1; Wherein, F4 is the effective focal length of the fourth lens.

6. The optical lens as described in claim 1, characterized in that, The optical lens satisfies the following relationship: -2≤F5 / F6≤-1.3; and / or, 2≤F5 / F≤2.9; and / or, 2.1≤CT5 / CT6≤2.82; Wherein, F5 is the effective focal length of the fifth lens, F6 is the effective focal length of the sixth lens, CT5 is the thickness of the fifth lens on the optical axis, and CT6 is the thickness of the sixth lens on the optical axis.

7. The optical lens as described in claim 1, characterized in that, The optical lens satisfies the following relationship: -4≤R13 / R14≤-1; and / or, 1.55≤SD14 / IMGH≤1.85; and / or, 4.9≤SD1 / IMGH≤5.21; Wherein, R13 is the radius of curvature of the object side of the seventh lens at the optical axis, R14 is the radius of curvature of the image side of the seventh lens at the optical axis, SD1 is half of the maximum effective aperture of the object side of the first lens, SD14 is half of the maximum effective aperture of the image side of the seventh lens, and IMGH is half of the image height corresponding to the maximum field of view of the optical lens.

8. The optical lens as described in claim 1, characterized in that, The optical lens satisfies the following relationship: 100°≤FOV F / IMGH ≤ 110°; and / or, 2≤∑CT / ∑AT≤3.4; and / or, 1.6 ≤ BFL / F ≤ 2.2; Wherein, IMGH is half the image height corresponding to the maximum field of view of the optical lens, ∑CT is the sum of the thicknesses of each lens from the first lens to the seventh lens on the optical axis, ∑AT is the sum of the air gaps between adjacent lenses from the first lens to the seventh lens on the optical axis, and BFL is the minimum distance between the image side of the seventh lens and the imaging surface of the optical lens in the direction parallel to the optical axis.

9. A camera module, characterized in that, The camera module includes a photosensitive chip and an optical lens as described in any one of claims 1 to 8, wherein the photosensitive chip is disposed on the image side of the optical lens.

10. A terminal device, characterized in that, It includes a housing and a camera module as described in claim 9, wherein the camera module is disposed in the housing.

Images