Optical lenses, camera modules and terminal equipment

Abstract

An optical lens, camera module, and terminal device comprise seven refractive lenses arranged sequentially along the optical axis from the object side to the image side: a first lens with negative refractive power, a convex object side, and a concave image side; a second lens with negative refractive power, a convex object side, and a concave image side; a third lens with negative refractive power, a concave object side, and a convex image side; a fourth lens with positive refractive power, a convex object side, and a convex image side; a fifth lens with positive refractive power, and both the object side and image side are convex; a sixth lens with negative refractive power, and both the object side and image side are concave; and a seventh lens with positive refractive power, and both the object side and image side are convex. The optical lens satisfies the following relationships: 200° ≤ FOV ≤ 210°, 11.5 ≤ TTL / F ≤ 12.5. The optical lens provided in this application enables miniaturization of the optical lens design while simultaneously providing a large field of view, thus improving the imaging quality of the optical lens.

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] With the rapid development of the automotive industry and the increasing demand for driving safety and convenience, the importance of in-vehicle driver assistance technology is becoming increasingly prominent. Surround-view in-vehicle camera systems, as a key component of in-vehicle driver assistance technology, are gradually becoming a hot area of ​​research and development. Surround-view in-vehicle camera systems place high demands on the performance of the in-vehicle lenses. However, existing in-vehicle lenses suffer from the following problems: large size, making installation difficult; insufficient field of view, and low image quality, resulting in limited monitoring range and numerous blind spots, making it difficult to meet the requirements of intelligent in-vehicle and monitoring systems for large field of view and high image quality. Summary of the Invention

[0003] In view of the above, it is necessary to propose an optical lens, a camera module and a terminal device to achieve miniaturization of the optical lens, while also enabling the optical lens to have a large field of view and improve the imaging quality of the optical lens.

[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, with the object side being convex near the optical axis and the image side being concave near the optical axis; a second lens having negative refractive power, with the object side being convex near the optical axis and the image side being concave near the optical axis; a third lens having negative refractive power, with the object side being concave near the optical axis and the image side being convex near the optical axis; and a fourth lens having positive refractive power, with both the object side and image side being convex near the optical axis. The fifth lens has positive refractive power, and both the object-side and image-side surfaces are convex near the optical axis; the sixth lens has negative refractive power, and both the object-side and image-side surfaces are concave near the optical axis; the seventh lens has positive refractive power, and both the object-side and image-side surfaces are convex near the optical axis; the optical lens satisfies the following relationship: 200°≤FOV≤210°, 11.5≤TTL / F≤12.5; 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 surface of the optical lens on the optical axis, and F is the effective focal length of the optical lens.

[0005] In the optical lens provided in this application embodiment, the first lens has negative refractive power, with the object-side surface being convex near the optical axis and the image-side surface being concave near the optical axis. The convex surface is a meniscus shape facing the object side, which can effectively collect incident light rays with a large field of view, expanding the field of view of the optical lens to achieve a maximum field of view greater than or equal to 200°. The second lens has negative refractive power, with the object-side surface being convex near the optical axis and the image-side surface being concave near the optical axis. It can initially correct the astigmatism of the optical lens, while further controlling the direction of light rays, reducing the difficulty of aberration correction for subsequent lenses, and improving the imaging quality of the optical lens. The third lens has negative refractive power, with the object-side surface being concave near the optical axis and the image-side surface being convex near the optical axis. It can make light rays more reasonably diverge to the rear lenses, reducing field curvature between different fields of view. The fourth lens has positive refractive power, with the object-side surface being convex near the optical axis and the image-side surface being convex near the optical axis. It can converge light rays. The fifth lens, with its positive refractive power and convex object-side and image-side surfaces near the optical axis, further converges light rays and adjusts the optical path difference between different fields of view. This allows the light rays emitted from the fifth lens to smoothly transition to the rear, thereby reducing sensitivity and aberrations. The sixth lens, with its negative refractive power and concave object-side and image-side surfaces near the optical axis, and the seventh lens, with its positive refractive power and convex object-side and image-side surfaces near the optical axis, adjust the light rays passing through the central and peripheral fields of view of the fifth lens. This increases the proportion of the peripheral field of view in the image and enhances the sharpness of the peripheral field of view. Simultaneously, it helps correct chromatic aberration and balance various aberrations, improving resolution and effectively reducing tolerance sensitivity, thus enhancing the image quality of the optical lens.

[0006] When 200°≤FOV≤210°, the optical lens has a large field of view, which is beneficial for the optical lens to capture more scene content and thus enrich the imaging information. When 11.5≤TTL / F≤12.5, the ratio of the total length of the optical lens to the focal length can be controlled within a reasonable range. This not only enables the miniaturization of the optical lens but also helps to better converge light onto the imaging surface, thereby improving the imaging quality of the optical lens.

[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 enables miniaturized optical lens design while simultaneously providing the optical lens with a large field of view, thus improving the imaging quality of the optical lens.

[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. Electronic devices having the camera module achieve miniaturized optical lens design while simultaneously enabling the optical lens to possess a large field of view, thereby improving the imaging quality of the optical lens. 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 13This is a schematic diagram of the camera module disclosed in this application.

[0022] Figure 14 This is a schematic diagram of the terminal device disclosed in this application.

[0023] Explanation of main component symbols: Optical lens 100, optical axis O, first lens L1, second lens L2, third lens L3, fourth lens L4, fifth lens L5, sixth lens L6, seventh lens L7, object side surface S1, S3, S5, S7, S9, S11, S13, image side surface S2, S4, S6, S8, S10, S12, S14, aperture STO, filter IR, protective glass CG, imaging surface IMG, camera module 200, photosensitive chip 201, terminal device 300, housing 301. Detailed Implementation

[0024] 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.

[0025] Firstly, please refer to Figure 1 This application discloses an optical lens 100 comprising seven refractive lenses, 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.

[0026] 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.

[0027] 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 concave near the optical axis O, and the image-side surface S6 of the third lens L3 is convex 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.

[0028] In the optical lens 100 provided in this embodiment, the first lens L1 has negative refractive power, the object-side surface S1 is convex near the optical axis O, and the image-side surface S2 is concave near the optical axis O. The convex surface is a meniscus shape facing the object side, which can effectively collect incident light with a large field of view, expand the field of view of the optical lens 100, and achieve a maximum field of view FOV ≥ 200°; the second lens L2 has negative refractive power, and the object-side surface S3 is convex near the optical axis O, which can initially correct the astigmatism of the optical lens 100, and simultaneously... The first step controls the direction of light, reducing the difficulty of aberration correction in subsequent lenses and improving the image quality of the optical lens 100. The third lens L3 has negative refractive power, and its object-side surface S5 is concave near the optical axis O, while its image-side surface S6 is convex near the optical axis O. This allows light to be more rationally diverged to the rear lenses, reducing field curvature between different fields of view. The fourth lens L4 has positive refractive power, and its object-side surface S7 is convex near the optical axis O, while its image-side surface S8 is convex near the optical axis O. This allows it to converge light and reduce light distortion. While reducing the light refraction tendency, the fifth lens L5 has positive refractive power. Its object-side surface S9 and image-side surface S10 are both convex near the optical axis O, which further converges the light and adjusts the optical path difference between different fields of view. This allows the emitted light from the fifth lens L5 to smoothly transition to the rear, thereby reducing sensitivity and aberrations. The sixth lens L6 has negative refractive power. Its object-side surface S11 and image-side surface S12 are both concave near the optical axis O. The seventh lens L7 has positive refractive power. The object-side surface S13 is convex near the optical axis O, and the image-side surface S14 is convex near the optical axis O. The sixth lens L6 and the seventh lens L7 can adjust the light rays passing through the central and peripheral fields of view of the fifth lens L5, increase the proportion of the peripheral field of view in the image, and enhance the image clarity of the peripheral field of view. At the same time, it is beneficial to correct chromatic aberration and balance various aberrations, improve resolution, and effectively reduce tolerance sensitivity, thereby improving the image quality of the optical lens 100.

[0029] In some embodiments, when the optical lens 100 is applied to electronic devices such as in-vehicle devices, dashcams, or automobiles, 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 have 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 the impact of temperature on the lenses is reduced to achieve better imaging results, while also reducing 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 electronic 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.

[0030] In some embodiments, spherical lenses are considered to have the advantages of simple manufacturing process and low production cost, and can facilitate 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 set 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 and the fifth lens L5 can be spherical lenses, while the second lens L2, the third lens L3, the fourth lens L4, and the seventh lens L7 are aspherical lenses. This combination of spherical and aspherical lenses 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. 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 does not require an excessive number of lenses to achieve good image quality, which helps to shorten 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.

[0031] In some embodiments, the optical lens 100 further includes an aperture stop STO, which may be an aperture stop and / or a field stop. For example, the aperture stop STO may be an aperture stop, or it may be a field stop, or it may be both an aperture stop and a field stop. By placing 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, the exit pupil can be moved away from the imaging plane IMG, and the effective diameter of the optical lens 100 can be reduced without reducing the telecentricity of the optical lens 100, thereby achieving miniaturization.

[0032] In some embodiments, the optical lens 100 further includes an infrared filter IR, which is disposed between the seventh lens L7 and the imaging surface IMG of the optical lens 100. In this embodiment, the infrared cutoff filter IR can be selected, thereby filtering out light of other wavelengths such as infrared light, while allowing only visible light to pass through, making the image more in line with the visual experience of the human eye. Of course, the infrared bandpass filter IR can also be selected, thereby filtering out light of other wavelengths such as visible light, while allowing only infrared light to pass through. By filtering out light of other wavelengths such as visible light, the image quality is improved; and the optical lens 100 can be used as an infrared optical lens, that is, the optical lens 100 can also image and obtain good image effects in dim environments and other special application scenarios. The infrared filter IR can also be selected as a dual-pass filter, which can simultaneously transmit high levels of visible light and transmit some infrared light, thereby achieving different wavelength selection, enabling both visible light imaging and infrared imaging, thus achieving day and night usability. It is understood that the filter IR can be made of glass, optical glass with a coating, or other materials. The choice can be made according to actual needs, and no specific limitation is made in this embodiment.

[0033] In some embodiments, the optical lens 100 further 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.

[0034] In some embodiments, the optical lens 100 satisfies the relationship: 200° ≤ FOV ≤ 210°. Here, FOV is the maximum field of view of the optical lens 100. Specifically, FOV can be 200.1°, 201°, 203°, 205°, 207°, or 209°, etc. When the optical lens 100 satisfies the above relationship, it has a larger field of view, which is beneficial for the optical lens 100 to acquire more scene content, thereby enriching the imaging information of the optical lens 100.

[0035] In some embodiments, the optical lens 100 satisfies the relationship: 11.5 ≤ TTL / F ≤ 12.5. Here, TTL is the distance along 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. Specifically, TTL / F can be 11.5, 11.7, 11.9, 12.1, 12.3, or 12.5, etc. When the optical lens 100 satisfies the above relationship, the ratio of the total length of the optical lens 100 to its focal length can be controlled within a reasonable range. This not only enables the miniaturization of the optical lens 100 but also facilitates better convergence of light onto the imaging surface IMG, thereby improving the imaging quality of the optical lens 100.

[0036] In some embodiments, the optical lens 100 satisfies the relationship: 0.5 ≤ F / IMGH ≤ 0.55. Here, F is the effective focal length of the optical lens 100, and IMGH is the radius of the largest effective imaging circle on the imaging plane IMG of the optical lens 100. Specifically, F / IMGH can be 0.5, 0.51, 0.52, 0.53, 0.54, 0.55, etc. When the optical lens 100 satisfies the above relationship, it can effectively correct the distortion generated by the optical lens 100, thereby reducing the manufacturing difficulty of the optical lens 100 while improving its imaging quality. Furthermore, it helps to control the focal length of the optical lens 100 within a reasonable range and ensures that the optical lens 100 has sufficient light-gathering area and a sufficient field of view, thus simultaneously satisfying the characteristics of a large field of view and a large image plane.

[0037] In some embodiments, the optical lens 100 satisfies the relationship: 120° ≤ FOV / FNO ≤ 130°. Here, FOV is the maximum field of view of the optical lens 100, and FNO is the aperture number of the optical lens. Specifically, FOV / FNO can be 120°, 121°, 123°, 125°, 127°, 129°, 130°, etc. When the optical lens 100 satisfies the above relationship, the field of view and light transmission of the optical lens 100 can be reasonably controlled, distortion at the edges of the field of view can be improved, and excessive light transmission of the optical lens 100 can be prevented. If the field of view of the optical lens 100 is too large when it exceeds the upper limit of the above relationship, it will cause excessive distortion at the edge of the field of view, resulting in distortion at the periphery of the image. In addition, it will also cause the aperture number to be too small, resulting in excessive light transmission of the optical lens 100. This will cause non-effective light rays to also reach the imaging plane IMG, resulting in aberrations such as spherical aberration and field curvature in the image (especially at the edge of the field of view), which will lead to a decrease in the imaging performance of the optical lens 100. If the field of view is below the lower limit of the above relationship, the aperture number of the optical lens 100 will be relatively large, resulting in insufficient light transmission of the optical lens 100 and a decrease in the sharpness of the captured image.

[0038] In some embodiments, the optical lens 100 satisfies the relationship: 1.8 ≤ ∑CT / ∑AT ≤ 2.4. Here, ∑CT is the sum of the thicknesses of all lenses 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. Specifically, ∑CT / ∑AT can be 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4, etc. Satisfying the above relationship allows for a reasonable configuration of air gaps, effectively shortening the step difference between the lenses of the optical lens 100, and facilitating the support design of the lenses, thus improving the assembly yield of the optical lens 100. If the upper limit of the relationship is exceeded, the lenses are too close together, easily leading to collisions; if the lower limit is below the relationship, the gaps between the lenses are too large, which is detrimental to lens assembly.

[0039] In some embodiments, the optical lens 100 satisfies the relationship: 1.8 ≤ BFL / F ≤ 2.4. Here, BFL is the distance on the optical axis O from the image-side surface S14 of the seventh lens L7 to the imaging surface IMG of the optical lens 10, and F is the effective focal length of the optical lens 100. Specifically, BFL / F can be 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4, etc. By controlling the ratio of the back focal length to the focal length of the optical lens 100, it is beneficial to reasonably control the back focal length and ensure the matching between the lens group and the image sensor. When the optical lens 100 exceeds the upper limit of the above relationship, the back focal length of the optical lens 100 is too long, which is not conducive to achieving a large image plane effect; when the optical lens 100 is below the lower limit of the above relationship, the focal length of the optical lens 100 is too large, which is not conducive to achieving the large field of view required by the optical lens 100.

[0040] In some embodiments, the optical lens 100 satisfies the relationship: 7.5 ≤ R1 / F ≤ 9.5. Here, R1 is the radius of curvature of the object-side surface S1 of the first lens L1 at the optical axis O, and F is the effective focal length of the optical lens 100. Specifically, R1 / F can be 7.5, 7.7, 8.0, 8.5, 9.0, 9.5, etc. By controlling the ratio of the radius of curvature of the object-side surface S1 of the first lens L1 at the optical axis O to the focal length of the optical lens 100, the refractive power of the first lens L1 can be controlled within a reasonable range. This helps to balance the refractive power borne by the first lens L1 in the optical lens 100, and further helps to balance the higher-order coma of the optical lens 100, resulting in good imaging quality.

[0041] In some embodiments, the optical lens 100 satisfies the relationship: 3.8 ≤ F4 / F ≤ 4.2. Here, F4 is the effective focal length of the fourth lens L4, and F is the effective focal length of the optical lens 100. Specifically, F4 / F can be 3.8, 3.85, 3.9, 4.0, 4.1, 4.2, etc. When the optical lens 100 satisfies the above relationship, the fourth lens L4 provides a portion of the positive refractive power to the optical lens 100, which can be used to adjust the overall refractive power of the optical lens 100. The fourth lens L4, together with the first lens L1, the second lens L2, and the third lens L3, forms a Gaussian-like structure, which can balance the distortion generated by the first lens L1, the second lens L2, and the third lens L3, avoiding excessive refractive index and causing higher-order aberrations, thereby improving the imaging quality of the optical lens 100.

[0042] In some embodiments, the optical lens 100 satisfies the relationship: -12 ≤ F3 / F ≤ -5. Here, F3 is the effective focal length of the third lens L3, and F is the effective focal length of the optical lens 100. Specifically, F3 / F can be -12, -10, -8, -7, -6, -5, etc. By limiting the relationship between the focal length of the third lens L3 and the effective focal length of the optical lens 100, the edge field-of-view aberration of the optical lens 100 can be corrected, the imaging resolution of the optical lens 100 can be improved, and thus the imaging quality of the optical lens 100 can be enhanced.

[0043] In some embodiments, the optical lens 100 satisfies the relationship: 1.4 ≤ SAGS1 / CT1 ≤ 2.2. Where SAGS1 is the distance from the maximum effective aperture of the object-side surface S1 of the first lens L1 to the intersection of the object-side surface S1 of the first lens L1 and the optical axis O along the optical axis O, and CT1 is the thickness of the first lens L1 along the optical axis O. Specifically, SAGS1 / CT1 can be 1.4, 1.6, 1.8, 2.0, 2.1, 2.2, etc. When the optical lens 100 satisfies the above relationship, it can effectively avoid the difficulty in lens manufacturing caused by excessive thickness of the first lens L1 or excessive curvature of the object-side surface S1 of the first lens L1, thereby reducing production costs.

[0044] In some embodiments, the optical lens 100 satisfies the relationship: 2.95 ≤ SD1 / SD14 ≤ 3.4. Wherein, SD1 is half the maximum effective aperture of the object-side surface S1 of the first lens L1, and SD14 is half the maximum effective aperture of the image-side surface S14 of the seventh lens L7. Specifically, SD1 / SD14 can be 2.95, 3.0, 3.1, 3.2, 3.3, 3.4, etc. When the optical lens 100 satisfies the above relationship, it is beneficial to control the shape of the first lens L1 and the seventh lens L7, making the overall structure of the optical lens 100 transition smoothly and avoiding large step differences, thereby improving the imaging quality of the optical lens 100.

[0045] In some embodiments, the optical lens 100 satisfies the relationship: 0.34 ≤ SD1 / TTL ≤ 0.4. Here, SD1 is half the maximum effective aperture of the object-side surface S1 of the first lens L1, and TTL is the distance from the object-side surface S1 of the first lens L1 to the imaging surface IMG of the optical lens 100 along the optical axis O. Specifically, SD1 / TTL can be 0.34, 0.35, 0.36, 0.37, 0.39, 0.4, etc. By controlling the relationship between the maximum effective half-aperture of the object-side surface S1 of the first lens L1 and the total length of the optical lens 100, it is possible to ensure that the first lens L1 has a sufficient and suitable aperture size. This allows for a small head design of the optical lens 100 while ensuring image quality and collecting large-angle light. In other words, satisfying the above relationship helps to reduce the head size and total length of the optical lens 100, achieving a balance between image quality and miniaturization.

[0046] In some embodiments, the optical lens 100 satisfies the relationship: 1 ≤ SD8 / SD9 ≤ 1.1. Here, SD8 is half the maximum effective aperture of the image-side surface S8 of the fourth lens L4, and SD9 is half the maximum effective aperture of the object-side surface S9 of the fifth lens L5. Specifically, SD8 / SD9 can be 1, 1.02, 1.04, 1.06, 1.08, 1.1, etc. When the optical lens 100 satisfies the above relationship, the aperture of the image-side surface S8 of the fourth lens L4 and the aperture of the object-side surface S9 of the fifth lens L5 can be reasonably configured, which is beneficial to the large image surface characteristics of the optical lens 100. Therefore, when the optical lens 100 is applied to a camera module, it can be matched with a large-size photosensitive chip, thereby improving the imaging quality of the optical lens 100.

[0047] In some embodiments, the optical lens 100 satisfies the relationship: 3.5 ≤ CT MAX / CT MIN ≤5.5. Among them, CT MAX CT represents the maximum thickness of the first lens L1 to the seventh lens L7 along the optical axis O. MIN This refers to the minimum thickness along the optical axis O among lenses L1 to L7. Specifically, CT MAX / CT MIN The possible values ​​are 3.5, 3.8, 4.0, 4.5, 5.0, 5.5, etc. This can be achieved through proper CT settings. MAX With CT MIN The relationship between these factors can make the thickness distribution of the lens more uniform, which is beneficial to improving the spatial layout and manufacturability of the optical lens 100.

[0048] In some embodiments, the optical lens 100 satisfies the relationship: -30 ≤ F3 / CT3 ≤ -10. Here, F3 is the effective focal length of the third lens L3, and CT3 is the thickness of the third lens L3 along the optical axis O. Specifically, F3 / CT3 can be -30, -25, -20, -18, -12, -10, etc. When the above relationship is satisfied, the thickness of the third lens L3 is suitable, which helps to reduce the thickness tolerance sensitivity of the third lens L3, reduce the processing difficulty of the third lens L3, improve the assembly qualification rate of the optical lens 100, and further reduce production costs. When the upper limit of the above relationship is exceeded, the thickness of the third lens L3 is too small while meeting the optical performance requirements, which is not conducive to the processing of the third lens L3, and the thickness tolerance sensitivity of the third lens L3 is high. When the thickness is below the lower limit of the above relationship, the thickness of the third lens L3 is too large while meeting the optical performance requirements, which is not conducive to the miniaturization and lightweight design requirements of the optical lens 100.

[0049] In some embodiments, the optical lens 100 satisfies the relationship: 1.7 ≤ F5 / CT5 ≤ 3.2. Here, F5 is the effective focal length of the fifth lens L5, and CT5 is the thickness of the fifth lens L5 along the optical axis O. Specifically, F5 / CT5 can be 1.7, 2.0, 2.4, 2.8, 3.0, 3.2, etc. When the optical lens 100 satisfies the above condition, the ratio of the effective focal length to the center thickness of the fifth lens L5 can be reasonably configured, ensuring that the center thickness of the fifth lens L5 is neither too thin nor too thick. This helps reduce the tolerance sensitivity of the fifth lens L5 and allows the fifth lens L5 to effectively correct aberrations caused by the refraction of light rays from the object-side lenses, thereby improving the imaging resolution of the optical lens 100.

[0050] In some embodiments, the optical lens 100 satisfies the relationship: 0.85 ≤ CT45 / CT56 ≤ 4.3. Here, CT45 is the distance on the optical axis O between the image-side surface S8 of the fourth lens L4 and the object-side surface S9 of the fifth lens L5, and CT56 is the distance on the optical axis O between the image-side surface S10 of the fifth lens L6 and the object-side surface S11 of the sixth lens L6. Specifically, CT45 / CT56 can be 0.85, 1.5, 2.5, 3.0, 3.5, 4.3, etc. Satisfying the above relationship allows for a reasonable configuration of the air gaps on the optical axis O between the fourth lens L4, the fifth lens L5, and the sixth lens L6, thereby further shortening the overall system length of the optical lens 100 and facilitating its assembly.

[0051] In some embodiments, the optical lens 100 satisfies the relationship: 7.5 ≤ |F67 / F| ≤ 15. Here, F67 is the combined effective focal length of the sixth lens L6 and the seventh lens L7, and F is the effective focal length of the optical lens 100. Specifically, |F67 / F| can be 7.5, 9, 11, 12.5, 13.5, 15, etc. Satisfying the above relationship and rationally configuring the ratio of the combined effective focal length of the sixth lens L6 and the seventh lens L7 to the effective focal length of the optical lens 100 is beneficial for correcting the off-axis aberrations of the optical lens 100 and improving the imaging quality of the optical lens 100.

[0052] In some embodiments, the optical lens 100 satisfies the relationship: 1.4mm -1 ≤|(Vd6-Vd7) / F67|≤3.2mm -1 Where Vd6 is the Abbe number of the sixth lens L6, Vd7 is the Abbe number of the seventh lens L7, and F67 is the combined effective focal length of the sixth lens L6 and the seventh lens L7. Specifically, |(Vd6-Vd7) / F67| can be 1.4mm. -1 1.8mm -1 2.2mm -1 2.4mm -1 2.8mm -1 3.2mm -1 By appropriately setting the Abbe number difference between the sixth lens L6 and the seventh lens L7 and the effective focal length ratio of the combination of the sixth lens L6 and the seventh lens L7, the chromatic aberration of the optical lens 100 can be effectively corrected, the authenticity of colors can be restored, and the image quality can be improved.

[0053] In some embodiments, the optical lens 100 satisfies the relationship: 0.3 ≤ CT6 / ET6 ≤ 0.5. Here, CT6 is the thickness of the sixth lens L6 along the optical axis O, and ET6 is the distance from the maximum effective aperture of the object-side surface S11 of the sixth lens L6 to the maximum effective aperture of the image-side surface S12 of the sixth lens L6 along the optical axis O. Specifically, |(Vd6-Vd7) / F67| can be 0.3, 0.36, 0.42, 0.46, 0.48, 0.5, etc. When the optical lens 100 satisfies the above relationship, the edge thickness and center thickness of the sixth lens L6 are within a reasonable range, the surface shape change of the sixth lens L6 is small, which can effectively control the aberrations present in the optical lens 100, and also facilitates manufacturing processes and improves production yield.

[0054] In some embodiments, the optical lens 100 satisfies the relationship: 2.3 ≤ CT7 / ET7 ≤ 3.4. Here, CT7 is the thickness of the seventh lens L7 along the optical axis O, and ET7 is the distance from the maximum effective aperture of the object-side surface S13 of the seventh lens L7 to the maximum effective aperture of the image-side surface S14 of the seventh lens L7 along the optical axis O. Specifically, CT7 / ET7 can be 2.3, 2.5, 2.7, 2.9, 3.2, 3.4, etc. By controlling the ratio of the thickness of the seventh lens L7 along the optical axis O to its edge thickness, not only can the higher-order aberrations generated by the optical lens 100 be effectively balanced, but the field curvature adjustment of the seventh lens L7 is also facilitated, thereby improving the imaging quality of the optical lens 100.

[0055] In some embodiments, the optical lens 100 satisfies the relationship: -0.5 ≤ (R5 - R6) / (R5 + R6) ≤ -0.2. Here, 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. Specifically, (R5 - R6) / (R5 + R6) can be -0.5, -0.45, -0.4, -0.35, -0.3, -0.2, etc. Satisfying this relationship allows for a reasonable setting of the surface shape difference between the object-side surface S5 and the image-side surface S6 of the third lens L3, enabling reasonable control of the shape of the third lens L3, which helps reduce the sensitivity of the third lens L3 to eccentricity, thereby effectively correcting aberrations.

[0056] In some embodiments, the optical lens 100 satisfies the relationship: -1.2 ≤ R9 / R10 ≤ -0.7. Here, 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. Specifically, R9 / R10 can be -1.2, -1.1, -0.99, -0.9, -0.8, -0.7, etc. When the optical lens 100 satisfies the above condition, the surface shape of the fifth lens L5 can be reasonably controlled, effectively controlling the astigmatism contribution of the fifth lens L5, ensuring the imaging quality of the intermediate field of view, which is beneficial for correcting the aberrations of the optical lens 100, ensuring the balance of the distortion of the optical lens 100, and at the same time, avoiding excessive curvature of the object-side surface S9 and image-side surface S10 of the fifth lens L5 at the optical axis O, which helps reduce the processing difficulty of the fifth lens L5 and improve the yield rate of the fifth lens L5.

[0057] In some embodiments, the optical lens 100 satisfies the relationship: -20 ≤ R11 / R12 ≤ -8. Here, 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. Specifically, R11 / R12 can be -20, -19, -16, -13, -10, -8, etc. When the optical lens 100 satisfies the above relationship, the radii of curvature of the object-side surface S11 of the sixth lens L6 at the optical axis O and the radii of curvature of the image-side surface S12 of the sixth lens L6 at the optical axis O can be appropriately configured, preventing the shape of the sixth lens L6 from becoming excessively curved. This not only corrects the astigmatism of the optical lens 100 but also reduces the sensitivity of the optical lens 100 to performance changes, thus improving product yield.

[0058] In some embodiments, the optical lens 100 satisfies the relationship: -0.6 ≤ R13 / R14 ≤ -0.1. Here, 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. Specifically, R13 / R14 can be -0.6, -0.5, -0.4, -0.3, -0.2, -0.1, etc. By constraining the ratio of the curvature radii of the object-side surface S13 to the image-side surface S14 of the seventh lens L7, the difference between the curvature radii of the object-side surface S13 and the image-side surface S14 of the seventh lens L7 becomes more reasonable. When the seventh lens L7 satisfies the above relationship, the curvature radius of the object-side surface S13 of the seventh lens L7 is smaller than the curvature radius of the image-side surface S14 of the seventh lens L7. The object-side surface S13 of the seventh lens L7 is more curved than the image-side surface S14 of the seventh lens L7, so that the incident light maintains a smaller deflection angle, which is beneficial for correcting the astigmatism generated by the front lens group (i.e., the first lens L1 to the sixth lens L6) and improving the imaging quality of the optical lens 100.

[0059] In some embodiments, the optical lens 100 satisfies the relationship: 102° ≤ FOV*F / IMGH ≤ 113°. Here, FOV is the maximum field of view of the optical lens 100, F is the effective focal length of the optical lens 100, and IMGH is the radius of the largest effective imaging circle on the imaging plane IMG of the optical lens 100. Specifically, FOV*F / IMGH can be 102°, 104°, 106°, 108°, 111°, 113°, etc. When the optical lens 100 satisfies the above relationship, it not only achieves a large field of view but also helps to ensure the image height of the optical lens 100, ensuring the image plane size on the imaging plane IMG, thus giving the optical lens 100 a suitable image plane size and improving the brightness of the imaging plane IMG of the optical lens 100. When the image height exceeds the upper limit of the conditional expression, the image height of the optical lens 100 is relatively small, resulting in an image with an excessively small imaging size. This makes it difficult for the imaging surface IMG of the optical lens 100 to match the settings of the image sensor, causing a significant decrease in the relative illuminance of the imaging surface IMG. Consequently, the brightness of the imaging surface IMG is relatively dark, and the captured image is prone to vignetting, thus reducing image quality. When the image height is below the lower limit of the conditional expression, the field of view of the optical lens 100 is relatively small, resulting in a reduced field of view for the optical lens 100, which is not conducive to achieving wide-angle imaging.

[0060] In some embodiments, the optical lens 100 satisfies the relationship: 72 ≤ FNO * SD1 / IMGH ≤ 77. Here, FNO is the aperture number of the optical lens 100, SD1 is half the maximum effective aperture of the object-side surface S1 of the first lens L1, and IMGH is the radius of the maximum effective imaging circle on the imaging plane IMG of the optical lens 100. Specifically, FNO * SD1 / IMGH can be 72, 73, 74, 75, 76, 77, etc. When the optical lens 100 satisfies the above relationship, the optical lens 100 has sufficient light intake, enabling the maximum effective half-aperture of the object-side surface S1 of the first lens L1 to be larger than the size of the imaging plane IMG, thereby achieving large image plane imaging while controlling the head aperture of the optical lens 100.

[0061] In some embodiments, the optical lens 100 satisfies the relationship: 1 ≤ IMGH / (F*θ) ≤ 1.2. Where IMGH is the radius of the maximum effective imaging circle on the imaging plane IMG of the optical lens 100, F is the effective focal length of the optical lens 100, and θ is the radian value of the maximum half-field-of-view angle of the optical lens 100. Specifically, IMGH / (F×θ) can be 1, 1.03, 1.06, 1.1, 1.15, 1.2, etc. When the optical lens 100 satisfies the above relationship, it can achieve a larger positive F-θ distortion, which is beneficial for realizing the ultra-wide-angle characteristics of the optical lens 100. Simultaneously, it can effectively increase the proportion of the edge field of view of the optical lens 100 in the entire image plane, thereby improving the angular resolution of the edge field of view.

[0062] In some embodiments, the optical lens 100 satisfies the relationship: 6.35 ≤ TTL / IMGH ≤ 6.55. Here, TTL is the distance along 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 IMGH is the radius of the largest effective imaging circle on the imaging surface IMG of the optical lens 100. Specifically, TTL / IMGH can be 6.35, 6.38, 6.41, 6.45, 6.5, 6.55, etc. When the optical lens 100 satisfies the above relationship, with the reasonable configuration of the refractive forces of each lens, the optical lens 100 can achieve good thinness and lightness, good aberration balance and image quality improvement capabilities, and can support high-pixel image sensors.

[0063] In some embodiments, the optical lens 100 satisfies the relationship: 1.6 ≤ FNO ≤ 1.65. Here, FNO is the aperture number of the optical lens 100. Specifically, FNO can be 1.6, 1.61, 1.62, 1.629, 1.64, or 1.65, etc. When the optical lens 100 satisfies the above relationship, it possesses the characteristic of a large aperture, allowing sufficient light intake and resulting in clearer images. This makes it suitable for capturing high-quality night scenes, starry skies, and other low-light object space scenes. Furthermore, it avoids introducing excessive aberrations, achieving overall balance for the optical lens 100.

[0064] In some embodiments, the optical lens 100 satisfies the relationship: -5 ≤ F1 / F ≤ -3.5. Here, F1 is the effective focal length of the first lens L1, and F is the effective focal length of the optical lens 100. Specifically, F1 / F can be -5, -4.5, -4.1, -3.9, -3.7, -3.5, etc. When the optical lens 100 satisfies the above relationship, the ratio of the focal length of the first lens L1 to the focal length of the optical lens 100 can be reasonably configured. For the entire optical lens 100, the refractive power of the first lens L1 will not be too strong, avoiding the introduction of excessive spherical aberration, thus enabling the optical lens 100 to have good imaging quality.

[0065] In some embodiments, the optical lens 100 satisfies the relationship: -4.5 ≤ F2 / F ≤ -3. Here, F2 is the effective focal length of the second lens L2, and F is the effective focal length of the optical lens 100. Specifically, F2 / F can be -4.5, -4.2, -3.9, -3.6, -3.3, -3, etc. When the optical lens 100 satisfies the above relationship, it helps to reduce the refractive angle of light in the second lens L2, and simultaneously allows the negative refractive force provided by the second lens L2 to effectively balance the spherical aberration of the optical lens 100, effectively correcting aberrations and thus achieving good image quality. It also facilitates the rational configuration of the center thickness of the second lens L2, thereby shortening the overall length of the optical lens 100, and further helps to expand the field of view of the optical lens 100.

[0066] In some embodiments, the optical lens 100 satisfies the relationship: 2.6 ≤ F5 / F ≤ 3.1. Here, F5 is the effective focal length of the fifth lens L5, and F is the effective focal length of the optical lens 100. Specifically, F5 / F can be 2.6, 2.7, 2.8, 2.9, 3.0, 3.1, etc. When the optical lens 100 satisfies the above relationship, it can reduce the exit angle of light after being refracted by the lens group, thereby reducing the incident angle of light entering the photosensitive chip on the image side of the optical lens 100, and thus improving the photosensitive performance of the photosensitive chip. When the value is below the lower limit of the above relationship, the refractive power of the fifth lens L5 is too strong, easily producing large edge aberrations and chromatic aberrations, which is detrimental to improving the resolving performance of the optical lens 100; when the value exceeds the upper limit of the relationship, the refractive power of the fifth lens L5 is insufficient to reduce the exit angle of light, which is also detrimental to improving the photosensitive performance of the photosensitive chip.

[0067] In some embodiments, the optical lens 100 satisfies the relationship: -1.8 ≤ F6 / F ≤ -1.4. Here, F6 is the effective focal length of the sixth lens L6, and F is the effective focal length of the optical lens 100. Specifically, F6 / F can be -1.8, 1.7, 1.6, -1.5, -1.45, -1.4, etc. By limiting the relationship between the focal length of the sixth lens L6 and the effective focal length of the optical lens 100 as described above, it helps to correct the aberrations of the optical lens 100 and reduces the temperature sensitivity of the optical lens 100, thereby improving the imaging quality of the optical lens 100.

[0068] In some embodiments, the optical lens 100 satisfies the relationship: 1.65 ≤ F7 / F ≤ 1.9. Here, F7 is the effective focal length of the seventh lens L7, and F is the effective focal length of the optical lens 100. Specifically, F7 / F can be 1.65, 1.7, 1.75, 1.8, 1.85, 1.9, etc. When the optical lens 100 satisfies the above relationship, the positive refractive power of the seventh lens L7 of the optical lens 100 will not become excessively strong. This prevents the angle between the normals of the object-side surface S13 and the image-side surface S14 of the seventh lens L7 and the incident light rays from becoming too large, thus further suppressing the occurrence of higher-order aberrations.

[0069] In some embodiments, the optical lens 100 satisfies the relationship: -7 ≤ F1 / CT1 ≤ -5.5. Here, F1 is the effective focal length of the first lens L1, and CT1 is the thickness of the first lens L1 along the optical axis O. Specifically, F1 / CT1 can be -7, -6.6, -6.3, -6.0, -5.8, -5.5, etc. Since the first lens L1 is closest to the object side, setting the first lens L1 as a lens with negative refractive power allows incident light rays entering the optical lens 100 at large angles to enter smoothly, thereby expanding the field of view of the optical lens 100 and ensuring the imaging quality of the optical lens 100.

[0070] In some embodiments, the optical lens 100 satisfies the relationship: -7 ≤ F2 / CT2 ≤ -6. Here, F2 is the effective focal length of the second lens L2, and CT2 is the thickness of the second lens L2 along the optical axis O. Specifically, F2 / CT2 can be -7, -6.8, -6.6, -6.4, -6.2, -6, etc. When the optical lens 100 satisfies the above relationship, by rationally configuring the effective focal length of the second lens L2 and the thickness of the second lens L2 along the optical axis O, the aberrations of the optical lens 100 can be effectively corrected, improving the image quality.

[0071] In some embodiments, the optical lens 100 satisfies the relationship: 1.9 ≤ F4 / CT4 ≤ 3.3. Here, F4 is the effective focal length of the fourth lens L4, and CT4 is the thickness of the fourth lens L4 along the optical axis O. Specifically, F4 / CT4 can be 1.9, 2.4, 2.4, 2.6, 2.8, 3.3, etc. When the optical lens 100 satisfies the above relationship, the fourth lens L4 can be rationally configured, effectively controlling the deflection angle of light in the optical lens 100, thereby reducing the sensitivity of the optical lens 100 and improving resolution. When the upper limit of the above relationship is exceeded, the thickness of the fourth lens L4 is too thin, resulting in an excessively small deflection angle of edge light, which is not conducive to correcting the aberrations of the optical lens 100, thus hindering the improvement of the imaging quality of the optical lens 100; when the lower limit of the above relationship is below, the focal length of the fourth lens L4 is too small, providing excessive positive refractive force to the optical lens 100, resulting in an excessively large deflection angle of light in the optical lens 100.

[0072] In some embodiments, the optical lens 100 satisfies the relationship: -4 ≤ F6 / CT6 ≤ -2. Here, F6 is the effective focal length of the sixth lens L6, and CT6 is the thickness of the sixth lens L6 along the optical axis O. Specifically, F6 / CT6 can be -4, -3.6, -3.3, -3, -2.5, -2, etc. When the optical lens 100 satisfies the above condition, on the one hand, it can avoid the astigmatism that is difficult to correct due to an excessively large effective focal length of the sixth lens L6, thereby improving the imaging quality of the optical lens 100; on the other hand, it can also better control the center thickness of the sixth lens L6 within a reasonable range, which is beneficial for both the lightweight design of the optical lens 100 and the molding and processing of the sixth lens L6.

[0073] In some embodiments, the optical lens 100 satisfies the relationship: 0.85 ≤ F7 / CT7 ≤ 1.3. Here, F7 is the effective focal length of the seventh lens L7, and CT7 is the thickness of the seventh lens L7 along the optical axis O. Specifically, F7 / CT7 can be 0.85, 0.9, 1.0, 1.1, 1.2, 1.3, etc. When the optical lens 100 satisfies the above condition, the tolerance sensitivity of the center thickness of the seventh lens L7 can be reduced, the processing difficulty of the seventh lens L7 can be reduced, which is beneficial to improving the assembly yield of the optical lens 100, further reducing production costs. Furthermore, by satisfying the relationship, the effective focal length of the seventh lens L7 can be avoided, preventing the optical lens 100 from producing astigmatism that is difficult to correct, thereby improving the imaging quality of the optical lens 100. Simultaneously, the excessive center thickness of the seventh lens L7 can be avoided, which is beneficial to the miniaturization design of the optical lens 100.

[0074] In some embodiments, the optical lens 100 satisfies the relationship: 2.9 ≤ R1 / R2 ≤ 3.7. Here, 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. Specifically, R1 / R2 can be 2.9, 3.1, 3.2, 3.4, 3.6, 3.7, etc. When the optical lens 100 satisfies the above relationship, it is beneficial to control the shape and curvature of the first lens L1, thereby effectively reducing the aberration introduced by the incident light, promoting aberration balance in the optical lens 100, and also reducing the processing difficulty of the first lens L1, thus facilitating its manufacturing and improving the manufacturability of the optical lens 100.

[0075] In some embodiments, the optical lens 100 satisfies the relationship: 5 ≤ R3 / R4 ≤ 11. 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. Specifically, R3 / R4 can be 5, 6, 7, 8, 9, 10, 11, etc. When the optical lens 100 satisfies the above relationship, by adjusting the radius of curvature of the second lens L2, the spherical aberration and astigmatism of the optical lens 100 can be effectively corrected. Simultaneously, the sensitivity of the second lens L2 can be reduced, minimizing the influence of field curvature during focusing at different object distances and improving image quality.

[0076] In some embodiments, the optical lens 100 satisfies the relationship: 0.4 ≤ R5 / R6 ≤ 0.65. Here, 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. Specifically, R5 / R6 can be 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, etc. When the optical lens 100 satisfies the above relationship, in conjunction with the concave-convex surface shape of the third lens L3, the radius of curvature and surface shape of the object-side surface S5 and image-side surface S6 of the third lens L3 can be optimized. This facilitates the third lens L3's reasonable coordination with the negative refractive power of the first lens L1 and the second lens L2, thereby reducing the on-axis spherical aberration of the entire optical lens 100. Simultaneously, it helps to correct the optical path from the third lens L3 to the fourth lens L4, thus reducing optical distortion.

[0077] In some embodiments, the optical lens 100 satisfies the relationship: -2 ≤ R7 / R8 ≤ -0.8. 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. Specifically, R7 / R8 can be -2, -1.8, -1.6, -1.4, -1, -0.8, etc. When the optical lens 100 satisfies the above relationship, it helps to correct the aberrations generated by the optical lens 100, making the refractive forces of each lens in the direction perpendicular to the optical axis O uniform, significantly correcting the distortion and aberrations generated by the front lens, while avoiding excessive bending of the fourth lens L4, and facilitating its molding and manufacturing.

[0078] In some embodiments, the optical lens 100 satisfies the relationship: 0.5 ≤ CT1 / ET1 ≤ 0.9. Here, CT1 is the thickness of the first lens L1 along the optical axis O, and ET1 is the distance from the maximum effective aperture of the object-side surface S1 of the first lens L1 to the maximum effective aperture of the image-side surface S2 of the first lens L1 along the optical axis O. Specifically, R7 / R8 can be 0.5, 0.6, 0.7, 0.8, 0.85, 0.9, etc. By reasonably controlling the thickness of the first lens L1 along the optical axis O and the edge thickness of the first lens L1, the thickness ratio of the first lens L1 can be reasonably controlled, thereby optimizing the surface curvature freedom of the first lens L1. This facilitates the effective convergence of large-angle incident light rays, and the light rays passing through the first lens L1 have a smaller deflection angle, thereby reducing stray light generation and ensuring good imaging performance. Simultaneously, reasonable surface shape changes can optimize the lens manufacturing process and reduce the design and assembly sensitivity of the first lens L1.

[0079] In some embodiments, the optical lens 100 satisfies the relationship: 0.5 ≤ CT2 / ET2 ≤ 0.8. Here, CT2 is the thickness of the second lens L2 along the optical axis O, and ET2 is the distance from the maximum effective aperture of the object-side surface S3 of the second lens L2 to the maximum effective aperture of the image-side surface S4 of the second lens L2 along the optical axis O. Specifically, CT2 / ET2 can be 0.5, 0.6, 0.65, 0.7, 0.75, 0.8, etc. By reasonably controlling the ratio of the thickness of the second lens L2 along the optical axis O to its edge thickness, it is beneficial to balance the aberrations generated by the lens itself and improve the imaging quality of the optical lens 100.

[0080] In some embodiments, the optical lens 100 satisfies the relationship: 0.5 ≤ CT3 / ET3 ≤ 0.75. Here, CT3 is the thickness of the third lens L3 along the optical axis O, and ET3 is the distance from the maximum effective aperture of the object-side surface S5 of the third lens L3 to the maximum effective aperture of the image-side surface S6 of the third lens L3 along the optical axis O, i.e., the edge thickness. Specifically, CT3 / ET3 can be 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, etc. Satisfying the above relationship facilitates lens processing and shaping, reduces assembly difficulty, and effectively corrects system field curvature. When the thickness is below the lower limit of the above relationship, the center thickness of the third lens L3 along the optical axis O is too small relative to the edge thickness, which is detrimental to lens processing and shaping; when the thickness is above the upper limit of the above relationship, the center thickness of the third lens L3 along the optical axis O is too large, resulting in an excessively large length of the optical lens 100 near the optical axis O, which is detrimental to small-size designs.

[0081] In some embodiments, the optical lens 100 satisfies the relationship: 1.1 ≤ CT4 / ET4 ≤ 1.4. Here, CT4 is the thickness of the fourth lens L4 along the optical axis O, and ET4 is the distance from the maximum effective aperture of the object-side surface S7 of the fourth lens L4 to the maximum effective aperture of the image-side surface S8 of the fourth lens L4 along the optical axis O. Specifically, CT4 / ET4 can be 1.1, 1.15, 1.2, 1.3, 1.35, 1.4, etc. When the optical lens 100 satisfies the above relationship, the ratio of the center thickness to the edge thickness of the fourth lens L4 can be reasonably controlled, thereby reasonably controlling the overall thickness of the fourth lens L4 and avoiding a large difference in the thickness ratio between its center and edge, which would be detrimental to processing and assembly.

[0082] In some embodiments, the optical lens 100 satisfies the relationship: 1.24 ≤ CT5 / ET5 ≤ 1.8. Here, CT5 is the thickness of the fifth lens L5 along the optical axis O, and ET5 is the distance from the maximum effective aperture of the object-side surface S9 of the fifth lens L5 to the maximum effective aperture of the image-side surface S10 of the fifth lens L5 along the optical axis O. Specifically, CT5 / ET5 can be 1.24, 1.3, 1.4, 1.5, 1.6, 1.8, etc. By reasonably controlling the thickness of the fifth lens L5 along the optical axis O and the edge thickness of the fifth lens L5, the size of the optical lens 100 can be effectively reduced while still satisfying the telephoto characteristics of the optical lens 100; simultaneously, it also facilitates the adjustment of the structure of the optical lens 100, reducing the difficulty of lens processing and assembly.

[0083] The surface shape of each aspherical lens can be defined using, but is not limited to, the following aspherical formulas:

[0084]

[0085] Where Z is the distance from the corresponding point on the aspherical surface to the plane tangent to the vertex of the surface, r is the distance from any point on the aspherical surface to the optical axis, 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), k is the conic constant, and Ai is the coefficient corresponding to the i-th higher-order term in the aspherical surface shape formula.

[0086] The optical lens 100 of this embodiment will be described in detail below with reference to specific parameters.

[0087] First Embodiment

[0088] The structural schematic diagram of the optical lens 100 disclosed in the first embodiment of this application is shown below. Figure 1As 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.

[0089] The first lens L1 has negative refractive power. The object-side surface S1 is convex near the optical axis O, and the image-side surface S2 is concave near the optical axis O.

[0090] The second lens L2 has negative refractive power, the object side S3 is convex near the optical axis O, and the image side S4 is concave near the optical axis O.

[0091] The third lens L3 has negative refractive power, the object side S5 is concave near the optical axis O, and the image side S6 is convex near the optical axis O.

[0092] The fourth lens L4 has positive refractive power. The object-side surface S7 is convex near the optical axis O, and the image-side surface S8 is convex near the optical axis O.

[0093] The fifth lens L5 has positive refractive power. The object-side surface S9 is convex near the optical axis O, and the image-side surface S10 is convex near the optical axis O.

[0094] The sixth lens L6 has negative refractive power. The object-side surface S11 is concave near the optical axis O, and the image-side surface S12 is concave near the optical axis O.

[0095] The seventh lens L7 has positive refractive power. The object-side surface S13 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.

[0096] Specifically, along the optical axis O of the optical lens 100, the elements from the object side to the image side are arranged sequentially according to the order of the elements in Table 1a from top to bottom. In the same lens, the surface with the smaller surface number is the object side of the lens, and the surface with the larger surface number is the image side of the lens. For example, surface numbers 1 and 2 correspond to the object side S1 and image side S2 of the first lens L1, respectively. The Y-radius in Table 1a is the radius of curvature of the object side or image side of the corresponding surface number at the optical axis O. The first value in the "thickness" parameter column of the lens is the thickness of the lens on the optical axis O, and the second value is the distance from the image side of the lens to the next surface on the optical axis O. The value of the stop STO in the "Thickness" parameter column represents the distance from the stop STO to the vertex of the next surface (the vertex refers to the intersection of the surface and the optical axis O) on the optical axis O. By default, the direction from the object side S1 of the first lens L1 to the image side 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 can be understood that the units of Y radius, thickness, and effective focal length in Table 1a are all mm. And the reference wavelength for the refractive index and Abbe number of each lens in Table 1a is 587.56 nm, and the reference wavelength for the effective focal length is 546 nm.

[0097] In the first embodiment, the object-side and image-side surfaces of the second lens L2, the third lens L3, the fourth lens L4, and the seventh lens L7, and the image-side surface of the sixth lens L6 are all aspherical surfaces. Table 1b gives the conic constant k and higher-order coefficients A4, A6, A8, A10, A12, A14, and A16 that can be used for each aspherical mirror surface in the first embodiment.

[0098] Table 1a

[0099]

[0100] Table 1b

[0101]

[0102]

[0103] 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 656 nm, 587 nm, 546 nm, 486 nm, 436 nm, and 420 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 first embodiment, the spherical aberration value of the optical lens 100 is better, indicating that the imaging quality of the optical lens 100 in this embodiment is better.

[0104] Please see Figure 2 (B) in the middle Figure 2 Figure (B) shows an astigmatism diagram of the optical lens 100 in the first embodiment at a wavelength of 546 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 from (B) in the figure, the astigmatism of the optical lens 100 is well compensated at this wavelength.

[0105] Please see 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 546 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.

[0106] Second Embodiment

[0107] 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 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.

[0108] Furthermore, in the second embodiment, the refractive power and surface shape of each lens are consistent with those of each lens in the first embodiment.

[0109] 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 foregoing embodiments, and will not be repeated here. It is understood that the units for Y-radius, thickness, and effective focal length in Table 2a are all mm. Furthermore, the reference wavelength for the refractive index and Abbe number of each lens in Table 2a is 587.56 nm, and the reference wavelength for the effective focal length is 546 nm.

[0110] In the second embodiment, the object-side and image-side surfaces of the second lens L2, the third lens L3, the fourth lens L4, and the seventh lens L7, and the image-side surface of the sixth lens L6 are all aspherical. Table 2b gives the conic constant k and higher-order coefficients A4, A6, A8, A10, A12, A14, and A16 that can be used for each aspherical mirror surface in the second embodiment.

[0111] Table 2a

[0112]

[0113]

[0114] Table 2b

[0115]

[0116] Please see Figure 4 ,Depend on Figure 4 As 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 each curve 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.

[0117] Third Embodiment

[0118] 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 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.

[0119] Furthermore, in the third embodiment, the refractive power and surface shape of each lens are consistent with those of each lens in the first embodiment.

[0120] 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 foregoing embodiments, and will not be repeated here. It is understood that the units for Y-radius, thickness, and effective focal length in Table 3a are all mm. Furthermore, the reference wavelength for the refractive index and Abbe number of each lens in Table 3a is 587.56 nm, and the reference wavelength for the effective focal length is 546 nm.

[0121] In the third embodiment, the object-side and image-side surfaces of the second lens L2, the third lens L3, the fourth lens L4, and the seventh lens L7, and the image-side surface of the sixth lens L6 are all aspherical. Table 3b gives the conic constant k and higher-order coefficients A4, A6, A8, A10, A12, A14, and A16 that can be used for each aspherical mirror surface in the third embodiment.

[0122] Table 3a

[0123]

[0124] Table 3b

[0125]

[0126]

[0127] 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 each curve 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.

[0128] Fourth embodiment

[0129] 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 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.

[0130] Furthermore, in the fourth embodiment, the refractive power and surface shape of each lens are consistent with those of each lens in the first embodiment.

[0131] The other parameters in the fourth embodiment are given in Table 4a below, and the definitions of each parameter can be derived from the descriptions 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 4a are all mm. Furthermore, the reference wavelength for the refractive index and Abbe number of each lens in Table 4a is 587.56 nm, and the reference wavelength for the effective focal length is 546 nm.

[0132] In the fourth embodiment, the object-side and image-side surfaces of the second lens L2, the third lens L3, the fourth lens L4, and the seventh lens L7, and the image-side surface of the sixth lens L6 are all aspherical. Table 4b gives the conic constant k and higher-order coefficients A4, A6, A8, A10, A12, A14, and A16 that can be used for each aspherical mirror surface in the fourth embodiment.

[0133] Table 4a

[0134]

[0135]

[0136] Table 4b

[0137]

[0138] 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 each curve 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.

[0139] Fifth embodiment

[0140] The structural schematic diagram of the optical lens 100 disclosed in the fifth embodiment of this application is shown below. Figure 9 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.

[0141] Furthermore, in the fifth embodiment, the refractive power and surface shape of each lens are consistent with those of the lenses in the first embodiment.

[0142] Other parameters in the fifth embodiment are given in Table 5a below, and the definitions of each parameter can be derived from the descriptions 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 and Abbe number of each lens in Table 5a is 587.56 nm, and the reference wavelength for the effective focal length is 546 nm.

[0143] In the fifth embodiment, the object-side and image-side surfaces of the second lens L2, the third lens L3, the fourth lens L4, and the seventh lens L7, and the image-side surface of the sixth lens L6 are all aspherical. Table 5b gives the conic constant k and higher-order coefficients A4, A6, A8, A10, A12, A14, and A16 that can be used for each aspherical mirror surface in the fifth embodiment.

[0144] Table 5a

[0145]

[0146] Table 5b

[0147]

[0148]

[0149] 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 each curve 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.

[0150] Sixth Embodiment

[0151] The structural schematic diagram of the optical lens 100 disclosed in the sixth embodiment of this application is shown below. Figure 11As 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.

[0152] Furthermore, in the sixth embodiment, the refractive power and surface shape of each lens are consistent with those of each lens in the first embodiment.

[0153] Other parameters in the sixth embodiment are given in Table 6a below, and the definitions of each parameter can be derived from the descriptions of the foregoing embodiments, and will not be repeated here. It is understood that the units for Y-radius, thickness, and effective focal length in Table 6a are all mm. Furthermore, the reference wavelength for the refractive index and Abbe number of each lens in Table 6a is 587.56 nm, and the reference wavelength for the effective focal length is 546 nm.

[0154] In the sixth embodiment, the object-side and image-side surfaces of the second lens L2, the third lens L3, the fourth lens L4, and the seventh lens L7, as well as the image-side surface of the sixth lens L6, are all aspherical. Table 6b gives the conic constant k and higher-order coefficients A4, A6, A8, A10, A12, A14, and A16 that can be used for each aspherical mirror surface in the sixth embodiment.

[0155] Table 6a

[0156]

[0157]

[0158] Table 6b

[0159]

[0160] 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 each curve 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.

[0161] Table 7 shows the values ​​of several relationships in the optical lenses 100 of the first to sixth embodiments.

[0162] Table 7

[0163]

[0164]

[0165] Please see Figure 13 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. The camera module 200 with the optical lens 100 can achieve a miniaturized design of the optical lens 100, while also enabling the optical lens 100 to have a large field of view, thus improving the imaging quality of the optical lens 100.

[0166] Please see Figure 14 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 301. The terminal device 300 can be, but is not limited to, a mobile phone, tablet computer, laptop computer, smartwatch, monitor, etc. It is understood that the electronic device 300 with the aforementioned camera module 200 also possesses all the technical effects of the aforementioned optical lens 100, namely, it can achieve a miniaturized design of the optical lens 100 while simultaneously giving the optical lens 100 a large field of view, thus improving the imaging quality of the optical lens 100.

[0167] 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, with the object side being convex near the optical axis and the image side being concave near the optical axis; The second lens has negative refractive power, with the object side being convex near the optical axis and the image side being concave near the optical axis; The third lens has negative refractive power, with the object side being concave near the optical axis and the image side being convex near the optical axis; The fourth lens has positive refractive power, and both the object-side and image-side surfaces are convex near the optical axis; The fifth lens has positive refractive power, and both the object-side and image-side surfaces are convex near the optical axis; The sixth lens has negative refractive power, and both the object-side and image-side surfaces are concave near the optical axis. The seventh lens has positive refractive power, and both the object-side and image-side surfaces are convex near the optical axis; The optical lens satisfies the following relationship: 200°≤FOV≤210°, 11.5≤TTL / F≤12.5, 1≤IMGH / (F*θ)≤1.2, 3.8≤F4 / F≤4.2; 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, IMGH is the radius of the maximum effective imaging circle on the imaging surface of the optical lens, θ is the radian value of the maximum half field of view of the optical lens, and F4 is the effective focal length of the fourth lens.

2. The optical lens as described in claim 1, characterized in that, The optical lens satisfies the following relationship: 0.5 ≤ F / IMGH ≤ 0.55, and / or, 120°≤FOV / FNO≤130°, and / or, 1.8 ≤ ∑CT / ∑AT ≤ 2.4; Wherein, IMGH is the radius of the largest effective imaging circle on the imaging plane of the optical lens, FNO is the aperture number of the optical lens, ∑CT is the sum of the thicknesses of all lenses from the first lens to the seventh lens on the optical axis, and ∑AT is the sum of the air gaps between two adjacent lenses from the first lens to the seventh lens.

3. The optical lens as described in claim 1, characterized in that, The optical lens satisfies the following relationship: 1.8 ≤ BFL / F ≤ 2.4, and / or, 7.5 ≤ R1 / F ≤ 9.5, and / or, -12≤F3 / F≤-5; Wherein, BFL is the distance on the optical axis from the image side of the seventh lens to the imaging surface of the optical lens, R1 is the radius of curvature of the object side of the first lens on the optical axis, and F3 is the effective focal length of the third lens.

4. The optical lens as described in claim 1, characterized in that, The optical lens satisfies the following relationship: 1.4 ≤ SAGS1 / CT1 ≤ 2.2, and / or, 2.95≤SD1 / SD14≤3.4, and / or, 0.34≤SD1 / TTL≤0.4, and / or, 1≤SD8 / SD9≤1.1; Wherein, SAGS1 is the distance from the maximum effective aperture of the object side of the first lens to the intersection of the object side of the first lens and the optical axis in the optical axis direction, CT1 is the thickness of the first lens on 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, SD8 is half of the maximum effective aperture of the image side of the fourth lens, and SD9 is half of the maximum effective aperture of the object side of the fifth lens.

5. The optical lens as described in claim 1, characterized in that, The optical lens satisfies the following relationship: 3.5≤CT MAX / CT MIN ≤5.5, and / or, -30≤F3 / CT3≤-10, and / or, 1.7≤F5 / CT5≤3.2, and / or, 0.85≤CT45 / CT56≤4.3; Among them, CT MAX CT represents the maximum thickness along the optical axis among the first to seventh lenses. MIN CT3 is the minimum thickness on the optical axis among the first to the seventh lenses, CT45 is the effective focal length of the third lens, CT5 is the thickness on the optical axis of the third lens, CT5 is the effective focal length of the fifth lens, CT5 is the thickness on the optical axis of the fifth lens, CT45 is the distance on the optical axis between the image side of the fourth lens and the object side of the fifth lens, and CT56 is the distance on the optical axis between the image side of the fifth lens and the object side of the sixth lens.

6. The optical lens as described in claim 1, characterized in that, The optical lens satisfies the following relationship: 7.5 ≤ |F67 / F| ≤ 15, and / or, 1.4mm -1 ≤|(Vd6-Vd7) / F67|≤3.2mm -1 , and / or 0.3≤CT6 / ET6≤0.5, and / or, 2.3≤CT7 / ET7≤3.4; Wherein, F67 is the combined effective focal length of the sixth lens and the seventh lens, Vd6 is the Abbe number of the sixth lens, Vd7 is the Abbe number of the seventh lens, CT6 is the thickness of the sixth lens on the optical axis, ET6 is the distance from the maximum effective aperture of the object side of the sixth lens to the maximum effective aperture of the image side of the sixth lens on the optical axis, CT7 is the thickness of the seventh lens on the optical axis, and ET7 is the distance from the maximum effective aperture of the object side of the seventh lens to the maximum effective aperture of the image side of the seventh lens on the optical axis.

7. The optical lens as described in claim 1, characterized in that, The optical lens satisfies the following condition: -0.5≤(R5-R6) / (R5+R6)≤-0.2, and / or, -1.2≤R9 / R10≤-0.7, and / or, -20≤R11 / R12≤-8, and / or, -0.6≤R13 / R14≤-0.1; Wherein, R5 is the radius of curvature of the object side of the third lens at the optical axis, R6 is the radius of curvature of the image side of the third lens at the optical axis, R9 is the radius of curvature of the object side of the fifth lens at the optical axis, R10 is the radius of curvature of the image side of the fifth lens at the optical axis, R11 is the radius of curvature of the object side of the sixth lens at the optical axis, R12 is the radius of curvature of the image side of the sixth lens at the optical axis, R13 is the radius of curvature of the object side of the seventh lens at the optical axis, and R14 is the radius of curvature of the image side of the seventh lens at the optical axis.

8. The optical lens as described in claim 1, characterized in that, The optical lens satisfies the following condition: 102°≤FOV*F / IMGH≤113°, and / or, 72≤FNO*SD1 / IMGH≤77; Wherein, FNO is the aperture number of the optical lens, and SD1 is half of the maximum effective aperture of the object side of the first lens.

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 1-8, 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