Optical lens, camera module and terminal device

Abstract

The application discloses an optical lens, a camera module and a terminal device. The optical lens has six lenses with refractive power. Along the optical axis, the optical lens comprises, in sequence from the object side to the image side: a first lens with negative refractive power, the object side surface and the image side surface of which are convex and concave respectively near the optical axis; a second lens with negative refractive power, the object side surface and the image side surface of which are concave and convex respectively near the optical axis; a third lens with positive refractive power, the object side surface and the image side surface of which are both convex near the optical axis; a fourth lens with positive refractive power, the object side surface and the image side surface of which are both convex near the optical axis; a fifth lens with negative refractive power, the object side surface and the image side surface of which are both concave near the optical axis; and a sixth lens with positive refractive power, the object side surface and the image side surface of which are both convex near the optical axis. The optical lens satisfies the relationship: 118°≤FOV≤130°; 1.5≤FNO≤1.62. The optical lens meets the requirements of large aperture, high resolution and low tolerance sensitivity.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical imaging, in particular to an optical lens, a camera module and a terminal device. BACKGROUND

[0002] In recent years, with the rapid development of intelligent driving technology and the wide application of artificial intelligence technology, the market demand for vehicle-mounted optical lenses has grown significantly, and their application scenarios have expanded from traditional imaging to environmental perception, obstacle identification and high-precision map construction. In the automatic driving system, as the core optical element of the environmental perception module, the imaging quality of the optical lens directly determines the recognition accuracy of the vehicle to the surrounding environment, and thus affects the driving safety. With the development of high-level automatic driving technology (such as L3 and above), especially the system based on multi-sensor fusion and deep learning algorithm, the vehicle-mounted front-view optical lens needs to meet multiple stringent technical indicators, including but not limited to: the balance between low cost and high resolution, the compatibility of large light quantity and high pixel density, and the field of view angle adaptability in different environments. In view of the above problems, it is urgent to develop an optical lens with large aperture, high resolution and low tolerance sensitivity. SUMMARY

[0003] In view of the above, it is necessary to propose an optical lens, a camera module and a terminal device to meet the requirements of large aperture, high resolution and low tolerance sensitivity.

[0004] To achieve the above purpose, in a first aspect, the present application discloses an optical lens, which has a total of six lenses with refractive power, and comprises in order from the object side to the image side along the optical axis: a first lens with negative refractive power, the object side surface of the first lens is convex at the near optical axis, and the image side surface of the first lens is concave at the near optical axis; a second lens with negative refractive power, the object side surface of the second lens is concave at the near optical axis, and the image side surface of the second lens is convex at the near optical axis; a third lens with positive refractive power, the object side surface of the third lens is convex at the near optical axis, and the image side surface of the third lens is convex at the near optical axis; a fourth lens with positive refractive power, the object side surface of the fourth lens is convex at the near optical axis, and the image side surface of the fourth lens is convex at the near optical axis; a fifth lens with negative refractive power, the object side surface of the fifth lens is concave at the near optical axis, and the image side surface of the fifth lens is concave at the near optical axis; a sixth lens with positive refractive power, the object side surface of the sixth lens is convex at the near optical axis, and the image side surface of the sixth lens is convex at the near optical axis; the optical lens satisfies the following relationship: 118°≤FOV≤130°; 1.5≤FNO≤1.62; wherein FOV is the maximum field of view angle of the optical lens, and FNO is the aperture number of the optical lens.

[0005] The optical lens provided in the application has a first lens with negative refractive power, a convex object side surface at a near optical axis, and a concave image side surface at the near optical axis, which is conducive to expanding the light collection range of the optical lens, increasing the light quantity, and making the light ray trend smooth and transition; the second lens has negative refractive power, a concave object side surface at the near optical axis, and a convex image side surface at the near optical axis, which is conducive to better receiving the light rays of the first lens, balancing the light ray divergence degree of each field of view, helping the rear end lenses to better receive and converge the light rays, correcting the aberration generated by the first lens, reducing the tolerance sensitivity, and improving the resolution; the third lens has positive refractive power, a convex object side surface at the near optical axis, and a convex image side surface at the near optical axis, which is conducive to converging the light rays projected by the second lens, better converging the light rays in the third lens, reducing the aberration, improving the resolution, and making the light rays smoothly transition to the fourth lens, correcting the field curvature of the optical lens, and improving the imaging optical quality of the optical lens; the fourth lens with positive refractive power and the fifth lens with negative refractive power are combined in a positive-negative lens combination, which is conducive to correcting the aberration of the optical lens and improving the resolution; the sixth lens has positive refractive power, a convex object side surface at the near optical axis, and a convex image side surface at the near optical axis, so that various aberrations in the optical lens are fully corrected, the edge field of view aberration of the optical lens is corrected, the tolerance sensitivity of the optical lens is reduced, and the resolution and the imaging optical quality of the optical lens are improved.

[0006] When the optical lens satisfies 118°≤FOV≤130°, the optical lens has a large field of view, so that more abundant information of a photographed object is obtained, good optical performance is met, and high imaging optical quality is met; when the optical lens satisfies 1.5≤FNO≤1.62, the optical lens has a large aperture, has sufficient light quantity, and can make the image photographed by the optical lens clearer, so that the optical lens can be applied to photograph high-quality night scenes or scenes in a space with low brightness. Therefore, the optical lens meets the requirements of a large aperture, high resolution, and low tolerance sensitivity.

[0007] In a second aspect, the application discloses a camera module, which comprises a photosensitive chip and the optical lens according to the first aspect, and the photosensitive chip is arranged on the image side of the optical lens. The camera module with the optical lens can meet the requirements of a large aperture, high resolution, and low tolerance sensitivity.

[0008] In a third aspect, the application discloses a terminal device, which comprises a shell and the camera module according to the second aspect, and the camera module is arranged in the shell. The terminal device with the camera module can meet the requirements of a large aperture, high resolution, and low tolerance sensitivity. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 is a structure diagram of an optical lens disclosed by the first embodiment of the present application.

[0010] Figure 2 is a longitudinal spherical aberration curve, an astigmatism curve and a distortion curve of the optical lens disclosed by the first embodiment of the present application.

[0011] Figure 3 is a structure diagram of an optical lens disclosed by the second embodiment of the present application.

[0012] Figure 4 is a longitudinal spherical aberration curve, an astigmatism curve and a distortion curve of the optical lens disclosed by the second embodiment of the present application.

[0013] Figure 5 is a structure diagram of an optical lens disclosed by the third embodiment of the present application.

[0014] Figure 6 is a longitudinal spherical aberration curve, an astigmatism curve and a distortion curve of the optical lens disclosed by the third embodiment of the present application.

[0015] Figure 7 is a structure diagram of an optical lens disclosed by the fourth embodiment of the present application.

[0016] Figure 8 is a longitudinal spherical aberration curve, an astigmatism curve and a distortion curve of the optical lens disclosed by the fourth embodiment of the present application.

[0017] Figure 9 is a structure diagram of an optical lens disclosed by the fifth embodiment of the present application.

[0018] Figure 10 is a longitudinal spherical aberration curve, an astigmatism curve and a distortion curve of the optical lens disclosed by the fifth embodiment of the present application.

[0019] Figure 11 is a structure diagram of a camera module disclosed by the present application.

[0020] Figure 12 is a structure diagram of a terminal device disclosed by the present application. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0022] Please refer to Figure 1The embodiment of the present application discloses an optical lens 100, which has six lenses with refractive power, and is sequentially provided with a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5 and a sixth lens L6 along an optical axis O from an object side to an image side. During imaging, light rays enter the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5 and the sixth lens L6 in sequence from the object side of the first lens L1, and finally form an image on an imaging surface IMG of the optical lens 100.

[0023] Further, the first lens L1 has negative refractive power, the second lens L2 has negative refractive power, the third lens L3 has positive refractive power, the fourth lens L4 has positive refractive power, the fifth lens L5 has negative refractive power, and the sixth lens L6 has positive refractive power.

[0024] Further, the object side surface S1 of the first lens L1 is a convex surface at the near optical axis O, the image side surface S2 of the first lens L1 is a concave surface at the near optical axis O; the object side surface S3 of the second lens L2 is a concave surface at the near optical axis O, the image side surface S4 of the second lens L2 is a convex surface at the near optical axis O; the object side surface S5 of the third lens L3 is a convex surface at the near optical axis O, the image side surface S6 of the third lens L3 is a convex surface at the near optical axis O; the object side surface S7 of the fourth lens L4 is a convex surface at the near optical axis O, the image side surface S8 of the fourth lens L4 is a convex surface at the near optical axis O; the object side surface S9 of the fifth lens L5 is a concave surface at the near optical axis O, the image side surface S10 of the fifth lens L5 is a concave surface at the near optical axis O; the object side surface S11 of the sixth lens L6 is a convex surface at the near optical axis O, and the image side surface S12 of the sixth lens L6 is a convex surface at the near optical axis O.

[0025] In the optical lens 100 provided in the application, the first lens L1 with negative refractive power is matched with the object side S1 which is convex at the near optical axis O and the image side S2 which is concave at the near optical axis O, which is beneficial to expand the light collection range of the optical lens, increase the light quantity, and make the light trend transition smoothly; the second lens L2 with negative refractive power is matched with the object side S3 which is concave at the near optical axis O and the image side S4 which is convex at the near optical axis O, which is beneficial to better receive the light of the first lens L1, balance the light divergence degree of each field of view, help the rear end lenses better receive and converge light, and is also beneficial to correct the aberration generated by the first lens L1, reduce the tolerance sensitivity, and improve the resolution; the third lens L3 with positive refractive power is matched with the object side S5 which is convex at the near optical axis O and the image side S6 which is convex at the near optical axis O, which is beneficial to converge the light projected by the second lens L2, make the light better converge at the third lens L3, reduce the aberration, improve the resolution, and make the light smoothly transition to the fourth lens L4, which is beneficial to correct the field curvature of the optical lens 100 and improve the imaging optical quality of the optical lens 100; the fourth lens L4 with positive refractive power and the fifth lens L5 with negative refractive power are combined in positive and negative lens groups, which is beneficial to correct the aberration of the optical lens 100 and improve the resolution; the sixth lens L6 with positive refractive power is matched with the object side S11 which is convex at the near optical axis O and the image side S12 which is convex at the near optical axis O, which makes various aberrations in the optical lens 100 be fully corrected, corrects the edge field aberration of the optical lens 100, reduces the tolerance sensitivity of the optical lens 100, and improves the resolution and imaging optical quality of the optical lens 100.

[0026] In some embodiments, when the optical lens 100 is applied to a terminal device such as a vehicle-mounted device or a driving recorder, the materials of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, and the sixth lens L6 can all be glass, so that the optical lens 100 has good optical effect while reducing the influence of temperature on the above lenses. Of course, among the multiple lenses of the optical lens 100, some lenses can be made of glass material, and some lenses can be made of plastic material, so as to reduce the processing cost and weight of the lenses while ensuring that the temperature has less influence on the lenses to achieve better imaging effect, thereby reducing the processing cost of the optical lens 100 and reducing the overall weight of the optical lens 100. In addition, it can be understood that when the optical lens 100 is applied to a terminal device such as a smart phone or a smart tablet, the materials of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, and the sixth lens L6 can be plastic to reduce the overall weight of the optical lens 100.

[0027] In some embodiments, the spherical lens has the advantages of simple manufacturing process, low production cost, and flexible design of the lens surface, which can improve the imaging resolution of the optical lens 100. The aspherical lens can make the object side or image side of the lens more flexible, so that the lens can solve the problems of unclear imaging, distorted view, and narrow field of view in a small and thin size, and the optical lens 100 can have good imaging quality without setting too many lenses, which is beneficial to shorten the length of the optical lens 100. Based on this, the second lens L2, the third lens L3, the fourth lens L4, and the fifth lens L5 can be spherical lenses, and the first lens L1 and the sixth lens L6 can be aspherical lenses. In this way, by combining the spherical and aspherical lenses, the processability of each lens can be improved, the surface design is facilitated, and the object side or image side of the lens can be more flexible, so that each lens can solve the problems of unclear imaging, distorted view, and narrow field of view in a small and thin size, and the optical lens 100 can have good imaging quality and high resolution without setting too many lenses, which is beneficial to shorten the length of the optical lens 100. It can be understood that in other embodiments, the surfaces of the lenses in the optical lens 100 can all be spherical, all be aspherical, or any combination of spherical and aspherical, which can be selected according to actual needs, and thus is not limited in this embodiment.

[0028] In some embodiments, the optical lens 100 further includes a stop STO, which is arranged between the image side S4 of the second lens L2 and the object side S5 of the third lens L3. The stop STO can be an aperture stop and / or a field stop. For example, the stop STO can be an aperture stop, or the stop STO can be a field stop, or the stop STO can be an aperture stop and a field stop. By arranging the stop STO between the image side S4 of the second lens L2 and the object side S5 of the third lens L3, the light entering the optical lens 100 can be effectively collected, thereby reducing the total optical length of the optical lens 100 and the front aperture of the optical lens 100. It can be understood that in other embodiments, the stop STO can also be arranged between other lenses, which can be adjusted according to actual conditions, and thus is not limited in this embodiment.

[0029] In some embodiments, the optical lens 100 further comprises an optical filter IR, which is arranged between the image side S12 of the sixth lens L6 and the imaging surface IMG of the optical lens 100. Optionally, the optical filter IR can be an infrared cut-off filter, which filters out infrared light and passes visible light, so that the imaging is more consistent with the visual experience of the human eye, thereby improving the imaging quality. In other embodiments, the optical filter IR can be an infrared band-pass filter, which passes infrared light and reflects visible light, so as to realize infrared imaging of the optical lens 100, so that the optical lens 100 can image and obtain better imaging quality in a dark environment or a special application scenario. It can be understood that the optical filter IR can be made of plastic, or can be made of optical glass coating, or other materials of infrared filter, which can be selected according to actual needs, and is not specifically limited in the present embodiment.

[0030] In some embodiments, the optical lens 100 further comprises a protective glass CG, which is arranged between the optical filter IR and the imaging surface IMG of the optical lens 100, so as to protect and prevent dust from affecting the photosensitive chip. The protective glass CG can be made of plastic, or can be made of optical glass coating, or other materials of protective glass CG, which can be selected according to actual needs, and is not specifically limited in the present embodiment. It can be understood that the protective glass CG can be part of the optical lens 100, or can be removed from the optical lens 100, but the total optical length of the optical lens 100 remains unchanged when the protective glass CG is removed.

[0031] In some embodiments, the optical lens 100 satisfies the relationship: 118°≤FOV≤130°. Wherein, FOV is the maximum field of view angle of the optical lens 100. Further, 121°≤FOV≤126°. Specifically, FOV can be 118°, 119°, 120°, 121°, 122°, 123°, 124°, 125°, 126°, 127°, 128°, 129°, 130°, etc. When the optical lens 100 satisfies the above relationship, the range of FOV is reasonably configured, so that the optical lens 100 has a larger field of view angle, thereby obtaining more abundant information of the photographed object, and satisfying good optical performance and higher imaging optical quality.

[0032] In some embodiments, the optical lens 100 satisfies a relationship: 1.5≤FNO≤1.62. Wherein, the FNO is the F-number of the optical lens 100. Further, 1.52≤FNO≤1.60. Specifically, the FNO can be 1.5, 1.51, 1.52, 1.53, 1.54, 1.55, 1.56, 1.57, 1.58, 1.59, 1.6, 1.61, 1.62, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of FNO, the optical lens 100 has the characteristics of a large aperture, the optical lens 100 has sufficient light amount, which can make the image captured by the optical lens 100 clearer, so as to be applicable to shooting high-quality night scenes or shooting in spaces with low brightness.

[0033] In some embodiments, the optical lens 100 satisfies a relationship: 6≤TTL / IMGH≤7.5. Wherein, the TTL is the distance from the object side of the first lens L1 to the imaging surface IMG of the optical lens 100 on the optical axis O, and the IMGH is half of the image height corresponding to the maximum field angle of the optical lens 100. Further, 6.3≤TTL / IMGH≤7.2, or 6.610≤TTL / IMGH≤7.161. Specifically, the TTL / IMGH can be 6, 6.1, 6.2, 6.3, 6.4, 6.5, 6.6, 6.6610, 6.7, 6.8, 6.9, 7, 7.1, 7.161, 7.2, 7.3, 7.4, 7.5, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of TTL / IMGH, the optical lens 100 can support high-pixel photosensitive elements, which is beneficial to improve the resolution of the optical lens 100. At the same time, by controlling the ratio of the image height to the total optical length of the optical lens 100 under a certain image height, the optical lens 100 has a relatively small total optical length, which is beneficial to realize miniaturization.

[0034] In some embodiments, the optical lens 100 satisfies a relationship: 5.3≤TTL / F≤5.7. Wherein, F is the effective focal length of the optical lens 100. Further, 5.374≤TTL / F≤5.67. Specifically, TTL / F can be 5.3, 5.31, 5.35, 5.36, 5.37, 5.374, 5.38, 5.4, 5.45, 5.48, 5.49, 5.5, 5.52, 5.54, 5.56, 5.58, 5.6, 5.62, 5.64, 5.65, 5.67, 5.68, 5.69, 5.7, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of TTL / F, it is beneficial to make the light better converge on the imaging surface IMG of the optical lens 100, improve the resolution of the optical lens 100, reduce the tolerance sensitivity of the optical lens 100, and at the same time, it is beneficial to realize the miniaturization design of the optical lens 100.

[0035] In some embodiments, the optical lens 100 satisfies a relationship: 4.6≤∑CT / ∑AT≤5.8. Wherein, ∑CT is the sum of the thickness of each lens in the first lens L1 to the sixth lens L6 on the optical axis O, and ∑AT is the sum of the air gap between adjacent lenses in the first lens L1 to the sixth lens L6 on the optical axis O. Further, 4.62≤∑CT / ∑AT≤5.733. Specifically, ∑CT / ∑AT can be 4.6, 4.61, 4.62, 4.65, 4.68, 4.69, 4.7, 4.8, 4.9, 5, 5.1, 5.2, 5.3, 5.4, 5.5, 5.6, 5.7, 5.71, 5.73, 5.733, 5.75, 5.78, 5.79, 5.8, 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 the lenses, make the structure of the optical lens 100 compact, and be beneficial to realize miniaturization.

[0036] In some embodiments, the optical lens 100 satisfies the relationship: -8≤F1 / CT1≤-6, where F1 is the effective focal length of the first lens L1, and CT1 is the thickness of the first lens L1 on the optical axis O. Further, -7.687≤F1 / CT1≤-6.833. Specifically, F1 / CT1 can be -8, -7.9, -7.8, -7.7, -7.687, -7.6, -7.5, -7.4, -7.3, -7.2, -7.1, -7, -6.9, -6.833, -6.8, -6.7, -6.6, -6.5, -6.4, -6.3, -6.2, -6.1, -6, and the like. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of F1 / CT1, the first lens L1 can be designed as a lens with negative refractive power, thereby providing the optical lens 100 with negative refractive power, which is conducive to effectively widening the converging light rays after being refracted by the first lens L1, so that the large-angle light rays can be fully transmitted to the imaging surface IMG of the optical lens 100, thereby obtaining a wider field of view range, which is conducive to realizing high resolution of the optical lens 100.

[0037] In some embodiments, the optical lens 100 satisfies the relationship: 1≤R3 / (R4+CT2)≤1.2, where CT2 is the thickness of the second lens L2 on the optical axis O, 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, 1≤R3 / (R4+CT2)≤1.139. Specifically, R3 / (R4+CT2) can be 1, 1.01, 1.02, 1.03, 1.04, 1.05, 1.054, 1.06, 1.062, 1.07, 1.073, 1.08, 1.09, 1.1, 1.11, 1.139, 1.12, 1.13, 1.14, 1.15, 1.16, 1.17, 1.18, 1.19, 1.2, and the like. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of R3 / (R4+CT2) and reasonably matching the radii of curvature of the object side surface S3 and the image side surface S4 of the second lens L2 at the optical axis O, the shape of the second lens L2 is close to a concentric circle, which is conducive to smooth transition of the light rays; at the same time, it is conducive to reducing the front aperture of the optical lens 100, reducing the volume of the optical lens 100, and realizing miniaturization and cost reduction of the optical lens 100.

[0038] In some embodiments, the optical lens 100 satisfies the relationship: 0.9≤CT2 / ET2≤1. Wherein ET2 is the distance from the maximum effective aperture of the object side S3 of the second lens L2 to the maximum effective aperture of the image side S4 of the second lens L2 in the direction of the optical axis O. Further, 0.941≤CT2 / ET2≤0.974. Specifically, CT2 / ET2 can be 0.9, 0.91, 0.92, 0.93, 0.94, 0.941, 0.95, 0.96, 0.97, 0.974, 0.98, 0.99, 1, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of CT2 / ET2, the central thickness and the edge thickness of the second lens L2 can be reasonably constrained while maintaining good imaging quality, so that the second lens L2 has a suitable thickness ratio, thereby reducing the processing difficulty of the second lens L2 and being conducive to mass production.

[0039] In some embodiments, the optical lens 100 satisfies the relationship: 1.9≤F3 / F≤2.2. Wherein F3 is the effective focal length of the third lens L3. Further, 1.996≤F3 / F≤2.144. Specifically, F3 / F can be 1.9, 1.91, 1.95, 1.99, 1.996, 2, 2.01, 2.05, 2.07, 2.09, 2.1, 2.14, 2.144, 2.15, 2.17, 2.19, 2.2, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of F3 / F, the incident light in front can be effectively collected and compressed, so that the light smoothly transitions into the rear optical lens 100, reduces the generation of aberration, and thereby improves the imaging quality of the optical lens 100.

[0040] In some embodiments, the optical lens 100 satisfies the relationship: -2≤R5 / R6≤-1. Wherein R5 is the curvature radius of the object side S5 of the third lens L3 at the optical axis O, and R6 is the curvature radius of the image side S6 of the third lens L3 at the optical axis O. Further, -1.495≤R5 / R6≤-1.21. Specifically, R5 / R6 can be -2, -1.9, -1.8, -1.7, -1.6, -1.5, -1.495, -1.49, -1.45, -1.4, -1.3, -1.25, -1.21, -1.2, -1.15, -1.11, -1.1, -1.09, -1.07, -1.05, -1.03, -1.01, -1, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of R5 / R6, the ratio of the curvature radius of the object side S5 and the image side S6 of the third lens L3 can be controlled within a certain range, which can ensure that the light passing through the stop STO is smooth, which is conducive to the smooth transition of the light to the rear, reduces the aberration of the optical lens 100, and improves the resolution of the optical lens 100.

[0041] In some embodiments, the optical lens 100 satisfies the relationship: 1.4 ≤ F3 / CT3 ≤ 1.65. Wherein, CT3 is the thickness of the third lens L3 along the optical axis O. Further, 1.434 ≤ F3 / CT3 ≤ 1.615. Specifically, F3 / CT3 can be 1.4, 1.41, 1.42, 1.43, 1.434, 1.44, 1.46, 1.48, 1.5, 1.51, 1.52, 1.53, 1.54, 1.55, 1.56, 1.57, 1.58, 1.59, 1.6, 1.61, 1.615, 1.62, 1.63, 1.64, 1.65, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of F3 / CT3, it is beneficial to reasonably constrain the ratio of the focal length of the third lens L3 to the thickness of the third lens L3 on the optical axis O, thereby reducing the tolerance sensitivity of the thickness of the third lens L3 on the optical axis O, reducing the processing difficulty of the third lens L3, and improving the assembly yield of the optical lens 100.

[0042] In some embodiments, the optical lens 100 satisfies the relationship: 0.2 ≤ (Vd4 - Vd5) / F45 ≤ 1.2. Where Vd4 is the Abbe number of the fourth lens L4, Vd5 is the Abbe number of the fifth lens L5, and F45 is the combined effective focal length of the fourth lens L4 and the fifth lens L5. Further, 0.28 ≤ (Vd4 - Vd5) / F45 ≤ 1.178. Specifically, (Vd4-Vd5) / F45 can be 0.2, 0.21, 0.24, 0.26, 0.28, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, 1, 1.05, 1.08, 1.09, 1.1, 1.11, 1.13, 1.15, 1.17, 1.178, 1.19, 1.2, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of (Vd4-Vd5) / F45, the chromatic aberration of the optical lens 100 can be effectively corrected, the authenticity of colors can be restored, and thus the imaging quality of the optical lens 100 can be improved.

[0043] In some embodiments, the optical lens 100 satisfies the relationship: -1≤R7 / R8≤-0.5, where R7 is the radius of curvature of the object side S7 of the fourth lens L4 at the optical axis O, and R8 is the radius of curvature of the image side S8 of the fourth lens L4 at the optical axis O. Further, -1≤R7 / R8≤-0.7, or -0.884≤R7 / R8≤-0.762. Specifically, R7 / R8 can be -1, -0.95, -0.9, -0.884, -0.85, -0.8, -0.762, -0.76, -0.75, -0.7, -0.65, -0.62, -0.6, -0.55, -0.54, -0.53, -0.52, -0.51, -0.5, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of R7 / R8, the radii of curvature of the object side S7 and the image side S8 of the fourth lens L4 are similar, which can correct the aberration of the optical lens 100 and ensure that the light passing through the third lens L3 is gentle, thereby reducing the tolerance sensitivity of the optical lens 100.

[0044] In some embodiments, the optical lens 100 satisfies the relationship: -0.6≤R9 / R10≤-0.2, where R9 is the radius of curvature of the object side S9 of the fifth lens L5 at the optical axis O, and R10 is the radius of curvature of the image side S10 of the fifth lens L5 at the optical axis O. Further, -0.555≤R9 / R10≤-0.237. Specifically, R9 / R10 can be -0.6, -0.59, -0.58, -0.57, -0.555, -0.55, -0.53, -0.51, -0.5, -0.45, -0.4, -0.35, -0.3, -0.25, -0.24, -0.237, -0.23, -0.22, -0.21, -0.2, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of R9 / R10, the ratio of the radii of curvature of the object side S9 and the image side S10 of the fifth lens L5 is controlled within a certain range, which is conducive to correcting the aberration of the optical lens 100 and improving the resolution; at the same time, it is conducive to shortening the total optical length of the optical lens 100 and realizing miniaturization design.

[0045] In some embodiments, the optical lens 100 satisfies a relationship: 2≤CT6 / CT56≤6.1. Wherein CT6 is the thickness of the sixth lens L6 on the optical axis O, CT56 is the distance between the image side S10 of the fifth lens L5 and the object side S11 of the sixth lens L6 on the optical axis O. Further, 2.113≤CT6 / CT56≤6.042. Specifically, CT6 / CT56 can be 2, 2.1, 2.11, 2.113, 2.2, 2.6, 2.8, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.01, 6.02, 6.04, 6.042, 6.05, 6.06, 6.08, 6.1, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of CT6 / CT56, it is beneficial to make the sixth lens L6 correct the aberration generated by the first lens L1 to the fifth lens L5, balance the field curvature and astigmatism of the optical lens 100, and at the same time, it is beneficial to reduce the tolerance sensitivity of the optical lens 100.

[0046] In some embodiments, the optical lens 100 satisfies a relationship: -60≤R12 / R11≤-20. Wherein R11 is the radius of curvature of the object side S11 of the sixth lens L6 at the optical axis O, R12 is the radius of curvature of the image side S12 of the sixth lens L6 at the optical axis O. Further, -59≤R12 / R11≤-21. Specifically, R12 / R11 can be -60, -59, -58, -55, -53, -51, -50, -49, -46, -42, -40, -38, -36, -34, -32, -30, -29, -28, -26, -25, -24, -22, -21, -20, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of R12 / R11, the ratio of the radii of curvature of the object side S11 and the image side S12 of the last lens is controlled within a certain range, which ensures miniaturization while weakening the ghosting at the last lens.

[0047] In some embodiments, the optical lens 100 satisfies the relationship: 5.8≤F6 / CT6≤6.7. Wherein, F6 is the effective focal length of the sixth lens L6. Further, 5.977≤F6 / CT6≤6.522. Specifically, F6 / CT6 can be 5.8, 5.9, 5.95, 5.97, 5.977, 5.98, 6, 6.1, 6.2, 6.3, 6.4, 6.5, 6.52, 6.522, 6.53, 6.55, 6.58, 6.59, 6.6, 6.61, 6.63, 6.65, 6.68, 6.69, 6.7, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of F6 / CT6, the effective focal length of the sixth lens L6 can be avoided to be too large to produce difficult-to-correct astigmatism, thereby improving the imaging quality of the optical lens 100; at the same time, the central thickness of the sixth lens L6 can also be well controlled within a reasonable range, which is conducive to the lightweight design of the optical lens 100, and also conducive to the molding and processing of the sixth lens L6.

[0048] In some embodiments, the optical lens 100 satisfies the relationship: -7.5≤CT2 / SAGS3≤-5.5. Wherein, SAGS3 is the sag of the edge of the optical effective diameter of the object side S3 of the second lens L2. Further, -7.341≤CT2 / SAGS3≤-5.575. Specifically, CT2 / SAGS3 can be -7.5, -7.4, -7.341, -7.3, -7.1, -7, -6.9, -6.8, -6.7, -6.6, -6.5, -6.4, -6.3, -6.2, -6.1, -6, -5.9, -5.8, -5.7, -5.6, -5.58, -5.575, -5.57, -5.56, -5.51, -5.5, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of CT2 / SAGS3, the central thickness of the second lens L2 can be avoided to be too large, and at the same time, the image side S4 of the second lens L2 is avoided to be too curved to increase the difficulty of lens manufacturing, thereby facilitating the reduction of production cost.

[0049] In some embodiments, the optical lens 100 satisfies a relationship: 1≤SD2 / SD3≤1.3. Wherein, SD2 is half of the maximum effective aperture of the image side S2 of the first lens L1, and SD3 is half of the maximum effective aperture of the object side S3 of the second lens L2. Further, 1.076≤SD2 / SD3≤1.269. Specifically, SD2 / SD3 can be 1, 1.01, 1.03, 1.05, 1.07, 1.076, 1.09, 1.1, 1.12, 1.14, 1.16, 1.18, 1.2, 1.21, 1.22, 1.23, 1.24, 1.25, 1.26, 1.269, 1.27, 1.28, 1.29, 1.3, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of SD2 / SD3, the light is smoothly transmitted between the first lens L1 and the second lens L2, which is beneficial to reduce the tolerance sensitivity of the optical lens 100.

[0050] In some embodiments, the optical lens 100 satisfies a relationship: 0.15≤SD1 / TTL≤0.17. Wherein, SD1 is half of the maximum effective aperture of the object side S1 of the first lens L1. Further, 0.152≤SD1 / TTL≤0.165. Specifically, SD1 / TTL can be 0.15, 0.151, 0.152, 0.156, 0.159, 0.16, 0.162, 0.163, 0.165, 0.167, 0.169, 0.17, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of SD1 / TTL, under certain total optical length, by controlling the ratio of the maximum effective aperture of the first lens L1 to the total optical length, the head size and volume of the optical lens 100 are limited, which is beneficial to realize miniaturization.

[0051] In some embodiments, the optical lens 100 satisfies the relationship: 16.4°≤FOV*IMGH / TTL≤19.9°. Specifically, FOV*IMGH / TTL can be 16.4°, 16.5°, 16.6°, 16.7°, 16.8°, 16.9°, 17°, 17.2°, 17.4°, 17.6°, 17.8°, 17.9°, 18°, 18.1°, 18.3°, 18.5°, 18.7°, 18.9°, 19°, 19.1°, 19.3°, 19.5°, 19.6°, 19.7°, 19.8°, 19.9°, or the like. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of FOV*IMGH / TTL, the case of effectively restricting the characteristics of the optical lens 100 in the target surface size and the volume size can be achieved, which can meet the market demand for the miniaturization of the optical lens 100 while meeting the adaptation of the optical lens 100 to the large-size imaging surface IMG, so that the optical lens 100 can meet the market demand for large target surface and miniaturization at the same time.

[0052] In some embodiments, the optical lens 100 satisfies the relationship: 3.8≤TTL / CT3≤4.4. Further, 3.859≤TTL / CT3≤4.287. Specifically, TTL / CT3 can be 3.8, 3.85, 3.859, 3.88, 3.89, 3.9, 3.95, 4, 4.05, 4.1, 4.15, 4.2, 4.25, 4.28, 4.287, 4.29, 4.3, 4.35, 4.36, 4.37, 4.38, 4.39, 4.4, or the like. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of TTL / CT3, it is beneficial to make the structure of the optical lens 100 compact, shorten the total optical length of the optical lens 100, and make the optical lens 100 achieve miniaturization design.

[0053] In some embodiments, the optical lens 100 satisfies the relationship: 1.29≤CT3 / CT4≤1.45. Wherein, CT4 is the thickness of the fourth lens L4 on the optical axis O. Further, 1.297≤CT3 / CT4≤1.436. Specifically, CT3 / CT4 can be 1.29, 1.297, 1.3, 1.31, 1.32, 1.33, 1.34, 1.35, 1.36, 1.37, 1.38, 1.39, 1.4, 1.41, 1.42, 1.43, 1.436, 1.44, 1.45, or the like. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of CT3 / CT4, it is beneficial to shorten the total optical length of the optical lens 100, and beneficial to make the overall structure of the optical lens 100 relatively compact, so that the optical lens 100 can meet the miniaturization design.

[0054] In some embodiments, the optical lens 100 satisfies the relationship: 1.15 ≤ F / IMGH ≤ 1.3. Further, 1.16 ≤ F / IMGH ≤ 1.263. Specifically, F / IMGH can be 1.15, 1.16, 1.17, 1.18, 1.19, 1.2, 1.21, 1.22, 1.23, 1.24, 1.25, 1.26, 1.263, 1.27, 1.28, 1.29, 1.3, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of F / IMGH, the optical lens 100 meets the requirement of high pixels, which is beneficial to improve the imaging quality of the optical lens 100.

[0055] In some embodiments, the optical lens 100 satisfies the relationship: 70° ≤ FOV / FNO ≤ 86°. Further, 73.583° ≤ FOV / FNO ≤ 85.257°. Specifically, FOV / FNO can be 70°, 71°, 72°, 73°, 73.5°, 73.583°, 76°, 77°, 78°, 79°, 80°, 81°, 82°, 83°, 84°, 85°, 85.2°, 85.257°, 85.3°, 85.5°, 85.6°, 85.8°, 85.9°, 86°, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of FOV / FNO, the field of view is taken into account while reducing the aperture number of the optical lens 100, which is beneficial to realize the miniaturization design of the optical lens 100 and reduce the cost.

[0056] In some embodiments, the optical lens 100 satisfies the relationship: 145° ≤ FOV*F / IMGH ≤ 160°. Further, 146.164° ≤ FOV*F / IMGH ≤ 158.172°. Specifically, FOV*F / IMGH can be 145°, 146°, 146.1°, 146.164°, 147°, 148°, 149°, 150°, 151°, 152°, 153°, 154°, 155°, 156°, 157°, 158°, 158.1°, 158.172°, 159°, 160°, 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, realize the characteristics of large view angle, large image surface and high pixels, and thus can capture the details of the object well. In addition, the distortion of the optical lens 100 can be well suppressed, so that the optical lens 100 can have a large view angle while having a low distortion risk.

[0057] In some embodiments, the optical lens 100 satisfies the relationship: -2≤F1 / F≤-1.5. Further, -1.836≤F1 / F≤-1.683. Specifically, F1 / F can be -2, -1.99, -1.97, -1.95, -1.93, -1.91, -1.9, -1.89, -1.88, -1.86, -1.84, -1.836, -1.83, -1.81, -1.8, -1.75, -1.73, -1.7, -1.69, -1.683, -1.68, -1.67, -1.65, -1.63, -1.61, -1.6, -1.58, -1.56, -1.54, -1.52, -1.51, -1.5, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of F1 / F, the light deviation can be effectively controlled, the tolerance sensitivity is reduced, and the imaging quality of the optical lens 100 is effectively improved. In addition, the total optical length of the optical lens 100 can be controlled, which is beneficial to the miniaturization of the optical lens 100.

[0058] In some embodiments, the optical lens 100 satisfies the relationship: -15≤F2 / F≤-5. Wherein, F2 is the effective focal length of the second lens L2. Further, -14.171≤F2 / F≤-7.161. Specifically, F2 / F can be -15, -14.5, -14.171, -14, -13.5, -13, -12.5, -12, -11.5, -11, -10.5, -10, -9.5, -9, -8.5, -8, -7.5, -7.161, -7.1, -7, -6.5, -6, -5.5, -5, 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 reasonably incident on the third lens L3 through the first lens L1, and beneficial to correct the aberration generated by the first lens L1 and reduce the tolerance sensitivity.

[0059] In some embodiments, the optical lens 100 satisfies the relationship: 1.4≤F4 / F≤1.7. Wherein, F4 is the effective focal length of the fourth lens L4. Further, 1.569≤F4 / F≤1.608. Specifically, F4 / F can be 1.4, 1.41, 1.43, 1.45, 1.47, 1.49, 1.5, 1.51, 1.52, 1.53, 1.54, 1.56, 1.569, 1.57, 1.59, 1.6, 1.601, 1.605, 1.608, 1.61, 1.63, 1.65, 1.67, 1.69, 1.7, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of F4 / F, the aberration can be effectively corrected after the combination of the fourth lens L4 and the fifth lens L5, and the resolution of the optical lens 100 is further improved.

[0060] In some embodiments, the optical lens 100 satisfies the relationship: -1.5≤F5 / F≤-1.1, where F5 is the effective focal length of the fifth lens L5. Further, -1.379≤F5 / F≤-1.198. Specifically, F5 / F can be -1.5, -1.45, -1.4, -1.38, -1.379, -1.35, -1.3, -1.25, -1.2, -1.198, -1.19, -1.18, -1.16, -1.14, -1.12, -1.1, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of F5 / F, the fifth lens L5 avoids introducing too much spherical aberration and can effectively correct aberration, reduce tolerance sensitivity, and help improve the resolution of the optical lens 100. In addition, the optical total length of the optical lens 100 can be controlled, which is beneficial to the miniaturization of the optical lens 100.

[0061] In some embodiments, the optical lens 100 satisfies the relationship: 2.7≤F6 / F≤3.1, where F6 is the effective focal length of the sixth lens L6. Further, 2.889≤F6 / F≤3.035. Specifically, F6 / F can be 2.7, 2.75, 2.8, 2.85, 2.88, 2.889, 2.89, 2.9, 2.95, 3, 3.01, 3.03, 3.035, 3.05, 3.07, 3.09, 3.1, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of F6 / F, the overall refractive power of the optical lens 100 can be reasonably distributed, the resolution of the optical lens 100 can be improved, and high-pixel imaging of the optical lens 100 can be achieved.

[0062] In some embodiments, the fourth lens L4 and the fifth lens L5 are cemented to form a cemented lens, which is beneficial to correcting chromatic aberration and balancing various aberrations, improving the resolving power of the optical lens 100, and effectively reducing the tolerance sensitivity and improving the imaging quality of the optical lens 100. At the same time, it is beneficial to shorten the optical total length of the optical lens 100, which is beneficial to the miniaturization design.

[0063] In some embodiments, the optical lens 100 satisfies the relationship: 9≤F45 / F≤40. Further, 9.734≤F45 / F≤39.82. Specifically, F45 / F can be 9, 9.5, 9.7, 9.734, 9.9, 10, 12, 14, 16, 18, 19, 20, 21, 23, 25, 27, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 39.82, 40, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of F45 / F, reasonably matching the cemented lens composed of the fourth lens L4 and the fifth lens L5 after cementing, it is beneficial to correct chromatic aberration and balance various aberrations, improve resolution, and effectively reduce tolerance sensitivity, and improve the imaging quality of the optical lens 100.

[0064] In some embodiments, the optical lens 100 satisfies the relationship: -20≤F2 / CT2≤-9. Further, -19.248≤F2 / CT2≤-9.683. Specifically, F2 / CT2 can be -20, -19.9, -19.248, -19, -18, -17, -16, -15, -14, -13, -12, -11, -10, -9.683, -9.5, -9.1, -9, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of F2 / CT2, the aberration, spherical aberration, coma, and other phenomena of the optical lens 100 can be effectively corrected, which is beneficial to improve the imaging quality.

[0065] In some embodiments, the optical lens 100 satisfies the relationship: 1.5≤F4 / CT4≤1.7. Further, 1.552≤F4 / CT4≤1.669. Specifically, F4 / CT4 can be 1.5, 1.51, 1.53, 1.55, 1.552, 1.57, 1.59, 1.6, 1.61, 1.62, 1.64, 1.66, 1.669, 1.68, 1.69, 1.7, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of F4 / CT4, it is beneficial to control the thickness of the fourth lens L4 within a reasonable range, thereby facilitating the compact structure of the optical lens 100, and further facilitating the miniaturization design of the optical lens 100. At the same time, the positive refractive power provided by the fourth lens L4 can be controlled within a reasonable range, which improves the effect of suppressing chromatic aberration, so that the optical lens 100 can have a higher resolution, thereby ensuring the imaging quality of the optical lens 100.

[0066] In some embodiments, the optical lens 100 satisfies the relationship: -9≤F5 / CT5≤-6. Wherein, CT5 is the thickness of the fifth lens L5 on the optical axis O. Further, -8.866≤F5 / CT5≤-6.844. Specifically, F5 / CT5 can be -9, -8.9, -8.866, -8.8, -8.7, -8.5, -8.3, -8.1, -8, -7.9, -7.7, -7.5, -7.3, -7.1, -7, -6.9, -6.844, -6.8, -6.6, -6.4, -6.2, -6.1, -6, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of F5 / CT5, the convergence ability of the fifth lens L5 to the incident light can be reasonably adjusted, which is conducive to correcting the edge aberration of the optical lens 100, reducing the chief ray angle of the edge field of view, and further improving the photosensitive performance of the photosensitive chip and the resolution of the optical lens 100.

[0067] In some embodiments, the optical lens 100 satisfies the relationship: 1.78≤R1 / R2≤1.85. Wherein, R1 is the curvature radius of the object side S1 of the first lens L1 at the optical axis O, and R2 is the curvature radius of the image side S2 of the first lens L1 at the optical axis O. Further, 1.796≤R1 / R2≤1.839. Specifically, R1 / R2 can be 1.78, 1.79, 1.796, 1.8, 1.81, 1.815, 1.82, 1.825, 1.83, 1.835, 1.839, 1.84, 1.845, 1.849, 1.85, 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 is effectively controlled, which is conducive to expanding the light collection range of the optical lens 100, increasing the light flux, and making the light ray smooth transition.

[0068] In some embodiments, the optical lens 100 satisfies the relationship: 0.6≤R3 / R4≤0.75. Wherein, R3 is the curvature radius of the object side S3 of the second lens L2 at the optical axis O, and R4 is the curvature radius of the image side S4 of the second lens L2 at the optical axis O. Further, 0.631≤R3 / R4≤0.713. Specifically, R3 / R4 can be 0.6, 0.61, 0.62, 0.63, 0.631, 0.64, 0.65, 0.66, 0.67, 0.68, 0.69, 0.7, 0.71, 0.713, 0.72, 0.73, 0.74, 0.75, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of R3 / R4, the surface type of the second lens L2 can be reasonably configured to reduce the tolerance sensitivity of the second lens L2 and improve the molding yield of the second lens L2.

[0069] The surface shape of each aspherical lens can be defined by, but is not limited to, the following aspherical formula:

[0070]

[0071] wherein Z is the distance from a 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 inverse of the Y radius 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 high-order term in the aspherical surface formula.

[0072] The optical lens 100 of the present embodiment will be described in detail below in combination with specific parameters.

[0073] First Embodiment

[0074] The structural schematic diagram of the optical lens 100 disclosed by the first embodiment of the present application is shown in Figure 1 The optical lens 100 comprises, in order from the object side to the image side along the optical axis O, a first lens L1, a second lens L2, a stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, an optical filter IR, and a protective glass CG.

[0075] Further, the first lens L1 has a negative refractive power, the second lens L2 has a negative refractive power, the third lens L3 has a positive refractive power, the fourth lens L4 has a positive refractive power, the fifth lens L5 has a negative refractive power, and the sixth lens L6 has a positive refractive power.

[0076] Still further, the object side surface S1 of the first lens L1 is convex at the vicinity of the optical axis O, and the image side surface S2 of the first lens L1 is concave at the vicinity of the optical axis O; the object side surface S3 of the second lens L2 is concave at the vicinity of the optical axis O, and the image side surface S4 of the second lens L2 is convex at the vicinity of the optical axis O; the object side surface S5 of the third lens L3 is convex at the vicinity of the optical axis O, and the image side surface S6 of the third lens L3 is convex at the vicinity of the optical axis O; the object side surface S7 of the fourth lens L4 is convex at the vicinity of the optical axis O, and the image side surface S8 of the fourth lens L4 is convex at the vicinity of the optical axis O; the object side surface S9 of the fifth lens L5 is concave at the vicinity of the optical axis O, and the image side surface S10 of the fifth lens L5 is concave at the vicinity of the optical axis O; the object side surface S11 of the sixth lens L6 is convex at the vicinity of the optical axis O, and the image side surface S12 of the sixth lens L6 is convex at the vicinity of the optical axis O.

[0077] In particular, the Y radius in Table 1a is the radius of curvature of the object side surface or the image side surface of the corresponding surface at the optical axis O. The first value in the "thickness" parameter column is the thickness of the lens at the optical axis O, and the second value is the distance from the image side surface of the lens to the vertex of the next surface at 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 at the optical axis O. By default, the direction from the object side surface S1 of the first lens L1 to the image side surface S12 of the last lens is the positive direction of the optical axis O. When the value is negative, it indicates that the stop STO is disposed 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 the Y radius, the thickness and the effective focal length in Table 1a are mm. In Table 1a, the refractive index, the Abbe number and the reference wavelength of the effective focal length of each lens are 558.0000 nm.

[0078] In the first embodiment, the object side surface S1 and the image side surface S2 of the first lens L1 and the object side surface S11 and the image side surface S12 of the sixth lens L6 are aspherical surfaces. Table 1b shows the conic constant k, the high-order term coefficients A4, A6, A8, A10, A12, A14, A16, A18 and A20 of the aspherical surfaces that can be used in the first embodiment.

[0079] Table 1a

[0080]

[0081] Table 1b

[0082]

[0083]

[0084] Please refer to Figure 2 (A), Figure 2 (A) of FIG. 10 shows the longitudinal spherical aberration of the optical lens 100 in the first embodiment at wavelengths of 661.0000 nm, 614.0000 nm, 558.0000 nm, 502.0000 nm and 455.0000 nm, respectively. In which, the abscissa along the X axis direction represents the focal point offset, and the unit is mm. The ordinate along the Y axis direction represents the normalized field of view. From Figure 2 (A) of FIG. 10, it can be seen that the spherical aberration value of the optical lens 100 in the first embodiment is better, which indicates that the imaging quality of the optical lens 100 in the embodiment is better. Please refer to Figure 2 (B), Figure 2(B) of FIG. 6 shows the astigmatism curve of the optical lens 100 in the first embodiment at a wavelength of 558.0000 nm. In (B) of FIG. 6, the abscissa along the X-axis represents the focal shift, in units of mm, and the ordinate along the Y-axis represents the field angle, in units of deg. In the astigmatism curve, T represents the curvature of the imaging surface IMG in the subarcuate direction, and S represents the curvature of the imaging surface IMG in the sagittal direction. From (B) of FIG. 6, it can be seen that, at this wavelength, the astigmatism of the optical lens 100 is well compensated. Figure 2 Please refer to (C) of FIG. 6, Figure 2 (C) of FIG. 6, Figure 2 (C) of FIG. 6 shows the distortion curve of the optical lens 100 in the first embodiment at a wavelength of 558.0000 nm. In (C) of FIG. 6, the abscissa along the X-axis represents the distortion, and the ordinate along the Y-axis represents the field angle, in units of deg. From (C) of FIG. 6, it can be seen that, at this wavelength, the distortion of the optical lens 100 is well corrected. Figure 3

[0085] Second Embodiment

[0086] The structural schematic diagram of the optical lens 100 disclosed by the second embodiment of the present application is shown in FIG. 7, which comprises, in order from the object side to the image side along the optical axis O, a first lens L1, a second lens L2, a stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, an optical filter IR, and a protective glass CG. Figure 4 Further, the first lens L1 has a negative refractive power, the second lens L2 has a negative refractive power, the third lens L3 has a positive refractive power, the fourth lens L4 has a positive refractive power, the fifth lens L5 has a negative refractive power, and the sixth lens L6 has a positive refractive power.

[0087] Further, the object side surface S1 of the first lens L1 is a convex surface at the vicinity of the optical axis O, and the image side surface S2 of the first lens L1 is a concave surface at the vicinity of the optical axis O; the object side surface S3 of the second lens L2 is a concave surface at the vicinity of the optical axis O, and the image side surface S4 of the second lens L2 is a convex surface at the vicinity of the optical axis O; the object side surface S5 of the third lens L3 is a convex surface at the vicinity of the optical axis O, and the image side surface S6 of the third lens L3 is a convex surface at the vicinity of the optical axis O; the object side surface S7 of the fourth lens L4 is a convex surface at the vicinity of the optical axis O, and the image side surface S8 of the fourth lens L4 is a convex surface at the vicinity of the optical axis O; the object side surface S9 of the fifth lens L5 is a concave surface at the vicinity of the optical axis O, and the image side surface S10 of the fifth lens L5 is a concave surface at the vicinity of the optical axis O; the object side surface S11 of the sixth lens L6 is a convex surface at the vicinity of the optical axis O, and the image side surface S12 of the sixth lens L6 is a convex surface at the vicinity of the optical axis O.

[0088]

[0089] ​​The other parameters in the second embodiment are given in Table 2a below, and the definitions of the parameters can be derived from the descriptions of the previous embodiments, which are not repeated here. It is understood that the units of the Y radius, thickness and effective focal length in Table 2a are mm. It is also understood that the reference wavelength of the refractive index, Abbe number and effective focal length of each lens in Table 2a is 558.0000 nm.

[0090] In the second embodiment, the object side S1 and image side S2 of the first lens L1, and the object side S11 and image side S12 of the sixth lens L6 are aspherical surfaces. The conic constant k, the higher order coefficients A4, A6, A8, A10, A12, A14, A16, A18 and A20 of each aspherical surface in the second embodiment are given in Table 2b.

[0091] Table 2a

[0092]

[0093]

[0094] Table 2b

[0095]

[0096] Please refer to Figure 4 , the (A) longitudinal spherical aberration graph, (B) astigmatism graph and (C) distortion curve graph in Figure 4 , it can be seen that the longitudinal spherical aberration, astigmatism and distortion of the optical lens 100 in the second embodiment are well controlled, so that the optical lens 100 of the embodiment has good imaging quality. In addition, the wavelengths corresponding to the curves in (A) of Figure 4 , (B) of Figure 4 and (C) of Figure 2 can refer to the descriptions of the wavelengths corresponding to the curves in (A) of Figure 2 , (B) of Figure 2 and (C) of Figure 5 in the first embodiment, which are not repeated here.

[0097] Third embodiment

[0098] The structure diagram of the optical lens 100 disclosed by the third embodiment of the present application is shown in Figure 6 , which comprises a first lens L1, a second lens L2, a stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a filter IR and a protection glass CG arranged in order from the object side to the image side along the optical axis O.

[0099] Further, the first lens L1 has a negative refractive power, the second lens L2 has a negative refractive power, the third lens L3 has a positive refractive power, the fourth lens L4 has a positive refractive power, the fifth lens L5 has a negative refractive power, and the sixth lens L6 has a positive refractive power.

[0100] Further, the object side surface S1 of the first lens L1 is convex at the near optical axis O, and the image side surface S2 of the first lens L1 is concave at the near optical axis O; the object side surface S3 of the second lens L2 is concave at the near optical axis O, and the image side surface S4 of the second lens L2 is convex at the near optical axis O; the object side surface S5 of the third lens L3 is convex at the near optical axis O, and the image side surface S6 of the third lens L3 is convex at the near optical axis O; the object side surface S7 of the fourth lens L4 is convex at the near optical axis O, and the image side surface S8 of the fourth lens L4 is convex at the near optical axis O; the object side surface S9 of the fifth lens L5 is concave at the near optical axis O, and the image side surface S10 of the fifth lens L5 is concave at the near optical axis O; the object side surface S11 of the sixth lens L6 is convex at the near optical axis O, and the image side surface S12 of the sixth lens L6 is convex at the near optical axis O.

[0101] The other parameters in the third embodiment are given in Table 3a below, and the definitions of the parameters can be derived from the foregoing description of the embodiments, which will not be repeated here. It can be understood that the units of the Y radius, the thickness and the effective focal length in Table 3a are mm. And the reference wavelength of the refractive index, the Abbe number and the effective focal length of each lens in Table 3a is 558.0000 nm.

[0102] In the third embodiment, the object side surface S1 and the image side surface S2 of the first lens L1, and the object side surface S11 and the image side surface S12 of the sixth lens L6 are aspherical surfaces, and the conic constant k, the high-order term coefficients A4, A6, A8, A10, A12, A14, A16, A18 and A20 of the aspherical surfaces used in the third embodiment are given in Table 3b.

[0103] Table 3a

[0104]

[0105] Table 3b

[0106]

[0107]

[0108] Please refer to Figure 6 , by Figure 6As 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 2 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 7 The content described in (C) will not be repeated here.

[0109] Fourth embodiment

[0110] The structural schematic diagram of the optical lens 100 disclosed in the fourth embodiment of this application is shown below. Figure 8 As shown, the optical lens 100 includes a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a filter IR, and a protective glass CG arranged sequentially along the optical axis O from the object side to the image side.

[0111] Furthermore, the first lens L1 has negative refractive power, the second lens L2 has negative refractive power, the third lens L3 has positive refractive power, the fourth lens L4 has positive refractive power, the fifth lens L5 has negative refractive power, and the sixth lens L6 has positive refractive power.

[0112] 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 concave near the optical axis O, and the image-side surface S4 of the second lens L2 is convex 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 convex near the optical axis O; the object-side surface S7 of the fourth lens L4 is convex near the optical axis O, and 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 concave near the optical axis O, and the image-side surface S10 of the fifth lens L5 is concave near the optical axis O; the object-side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image-side surface S12 of the sixth lens L6 is convex near the optical axis O.

[0113] 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, Abbe number, and effective focal length of each lens in Table 4a is 558.0000 nm.

[0114] In the fourth embodiment, the object side S1 and the image side S2 of the first lens L1 and the object side S11 and the image side S12 of the sixth lens L6 are all aspherical surfaces, and Table 4b gives the conic constant k, the high order term coefficients A4, A6, A8, A10, A12, A14, A16, A18 and A20 of the aspherical surfaces used in the fourth embodiment.

[0115] Table 4a

[0116]

[0117]

[0118] Table 4b

[0119]

[0120] Please refer to Figure 8 , the (A) longitudinal spherical aberration graph, (B) astigmatism graph and (C) distortion curve graph in Figure 8 , it can be seen that the longitudinal spherical aberration, astigmatism and distortion of the optical lens 100 in the fourth embodiment are well controlled, so that the optical lens 100 of this embodiment has good imaging quality. In addition, the wavelengths corresponding to the curves in (A) of Figure 8 , (B) of Figure 8 and (C) of Figure 2 , please refer to the descriptions of the wavelengths corresponding to the curves in (A) of Figure 2 , (B) of Figure 2 and (C) of Figure 9 in the first embodiment, which will not be repeated here.

[0121] Fifth embodiment

[0122] The structure schematic diagram of the optical lens 100 disclosed by the fifth embodiment of the present application is shown in Figure 10 , the optical lens 100 comprises a first lens L1, a second lens L2, a stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a filter IR and a protection glass CG which are sequentially arranged along the optical axis O from the object side to the image side.

[0123] Further, the first lens L1 has a negative refractive power, the second lens L2 has a negative refractive power, the third lens L3 has a positive refractive power, the fourth lens L4 has a positive refractive power, the fifth lens L5 has a negative refractive power, and the sixth lens L6 has a positive refractive power.

[0124] 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 concave near the optical axis O, and the image-side surface S4 of the second lens L2 is convex 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 convex near the optical axis O; the object-side surface S7 of the fourth lens L4 is convex near the optical axis O, and 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 concave near the optical axis O, and the image-side surface S10 of the fifth lens L5 is concave near the optical axis O; the object-side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image-side surface S12 of the sixth lens L6 is convex near the optical axis O.

[0125] 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, Abbe number, and effective focal length of each lens in Table 5a is 558.0000 nm.

[0126] In the fifth embodiment, the object-side surface S1 and image-side surface S2 of the first lens L1 and the object-side surface S11 and image-side surface S12 of the sixth lens L6 are both aspherical surfaces. Table 5b gives the conic constant k and higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18 and A20 that can be used for each aspherical mirror surface in the fifth embodiment.

[0127] Table 5a

[0128]

[0129] Table 5b

[0130]

[0131]

[0132] 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 2 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 (B) in the Figure 11 (C) in the (C) in the

[0133] Table 6 shows the values of FOV, FNO, TTL / IMGH, TTL / F, ∑CT / ∑AT, F1 / CT1, R3 / (R4+CT2), CT2 / ET2, F3 / F, R5 / R6, F3 / CT3, (Vd4-Vd5) / F45, R7 / R8, R9 / R10, CT6 / CT56, R12 / R11, F6 / CT6, CT2 / SAGS3, SD2 / SD3, SD1 / TTL, FOV*IMGH / TTL, TTL / CT3, CT3 / CT4, F / IMGH, FOV / FNO, FOV*F / IMGH, F1 / F, F2 / F, F4 / F, F5 / F, F6 / F, F45 / F, F2 / CT2, F4 / CT4, F5 / CT5, R1 / R2 and R3 / R4 in the optical lens 100 of the first embodiment to the fifth embodiment.

[0134] Table 6

[0135]

[0136]

[0137] Referring to Figure 12 The present application also discloses a camera module 200, which comprises a photosensitive chip 201 and the optical lens 100. The photosensitive chip 201 is arranged on the image side of the optical lens 100. The optical lens 100 is used for receiving light signals of an object and projecting the light signals to the photosensitive chip 201. The photosensitive chip 201 is used for converting the light signals corresponding to the object into image signals, which will not be described herein. It can be understood that the camera module 200 with the optical lens 100 has all the technical effects of the optical lens 100, i.e., can meet the requirements of large aperture, high resolution and low tolerance sensitivity.

[0138] Referring to ​ The present application also discloses a terminal device 300, which comprises a housing 301 and the camera module 200. The camera module 200 is arranged on the housing 300. The terminal device 300 can be, but is not limited to, a car, a mobile phone, a tablet computer, a notebook computer, a smart watch, a monitor, a smart robot, a sweeping robot and the like. It can be understood that the terminal device 300 with the camera module 200 has all the technical effects of the optical lens 100, i.e., can meet the requirements of large aperture, high resolution and low tolerance sensitivity.

[0139] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. An optical lens characterized in that, There are six lenses with refractive power, sequentially including, along the optical axis from the object side to the image side: a first lens with negative refractive power, the object side surface of the first lens is convex at the near optical axis, and the image side surface of the first lens is concave at the near optical axis; a second lens with negative refractive power, the object side surface of the second lens is concave at the near optical axis, and the image side surface of the second lens is convex at the near optical axis; a third lens with positive refractive power, the object side surface of the third lens is convex at the near optical axis, and the image side surface of the third lens is convex at the near optical axis; a fourth lens with positive refractive power, the object side surface of the fourth lens is convex at the near optical axis, and the image side surface of the fourth lens is convex at the near optical axis; a fifth lens with negative refractive power, the object side surface of the fifth lens is concave at the near optical axis, and the image side surface of the fifth lens is concave at the near optical axis; a sixth lens with positive refractive power, the object side surface of the sixth lens is convex at the near optical axis, and the image side surface of the sixth lens is convex at the near optical axis; The optical lens satisfies the following relationship: 118°≤FOV≤130°; 1.5≤FNO≤1.62; -7.5≤CT2 / SAGS3≤-5.5; -8≤F1 / CT1≤-6; wherein FOV is the maximum field of view angle of the optical lens, FNO is the aperture number of the optical lens, CT2 is the thickness of the second lens on the optical axis, SAGS3 is the sag of the edge of the object side optical effective diameter of the second lens, F1 is the effective focal length of the first lens, and CT1 is the thickness of the first lens on the optical axis.

2. The optical lens of claim 1, wherein, The optical lens satisfies the following relationship: 6≤TTL / IMGH≤7.5; and / or, 5.3≤TTL / F≤5.7; and / or, 4.6≤∑CT / ∑AT≤5.8; wherein 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, IMGH is half of the image height corresponding to the maximum field of view angle of the optical lens, F is the effective focal length of the optical lens, ∑CT is the sum of the thicknesses of the first lens to the sixth lens on the optical axis, and ∑AT is the sum of the air gaps between adjacent lenses of the first lens to the sixth lens on the optical axis.

3. The optical lens of claim 1, wherein, The optical lens satisfies the following relationship: 1≤R3 / (R4+CT2)≤1.2; and / or, 0.9≤CT2 / ET2≤1; wherein R3 is the curvature radius of the object side surface of the second lens at the optical axis, R4 is the curvature radius of the image side surface of the second lens at the optical axis, and ET2 is the distance in the direction of the optical axis from the maximum effective aperture of the object side surface of the second lens to the maximum effective aperture of the image side surface of the second lens.

4. The optical lens of claim 1, wherein, The optical lens satisfies the following relationship: 1.9≤F3 / F≤2.2; and / or, -2≤R5 / R6≤-1; and / or, 1.4≤F3 / CT3≤1.65; Wherein, F is an effective focal length of the optical lens, F3 is an effective focal length of the third lens, R5 is a radius of curvature of an object side surface of the third lens at the optical axis, R6 is a radius of curvature of an image side surface of the third lens at the optical axis, and CT3 is a thickness of the third lens on the optical axis.

5. The optical lens of claim 1, wherein, The optical lens satisfies the following relationship: 0.2≤(Vd4-Vd5) / F45≤1.2; and / or, -1≤R7 / R8≤-0.5; and / or, -0.6≤R9 / R10≤-0.2; Wherein, Vd4 is an Abbe number of the fourth lens, Vd5 is an Abbe number of the fifth lens, F45 is a combined effective focal length of the fourth lens and the fifth lens, R7 is a radius of curvature of an object side surface of the fourth lens at the optical axis, R8 is a radius of curvature of an image side surface of the fourth lens at the optical axis, R9 is a radius of curvature of an object side surface of the fifth lens at the optical axis, and R10 is a radius of curvature of an image side surface of the fifth lens at the optical axis.

6. The optical lens of claim 1, wherein, The optical lens satisfies the following relationship: 2≤CT6 / CT56≤6.1; and / or, -60≤R12 / R11≤-20; and / or, 5.8≤F6 / CT6≤6.7; Wherein, CT6 is a thickness of the sixth lens on the optical axis, CT56 is a distance between an image side surface of the fifth lens and an object side surface of the sixth lens on the optical axis, R11 is a radius of curvature of an object side surface of the sixth lens at the optical axis, R12 is a radius of curvature of an image side surface of the sixth lens at the optical axis, and F6 is an effective focal length of the sixth lens.

7. The optical lens of claim 1, wherein, The optical lens satisfies the following relationship: 1≤SD2 / SD3≤1.3; and / or, 0.15≤SD1 / TTL≤0.17; Wherein, SD1 is half of a maximum effective aperture of an object side surface of the first lens, SD2 is half of a maximum effective aperture of an image side surface of the first lens, SD3 is half of a maximum effective aperture of an object side surface of the second lens, and TTL is a distance between the object side surface of the first lens and an imaging surface of the optical lens on the optical axis.

8. The optical lens of claim 1, wherein, The optical lens satisfies the following relationship:

16. 4° < FOV IMGH / TTL < 19.9°; and / or, 3.8≤TTL / CT3≤4.4; and / or, 1.29≤CT3 / CT4≤1.45; Wherein, TTL is a distance between the object side surface of the first lens and an imaging surface of the optical lens on the optical axis, IMGH is half of an image height corresponding to a maximum field of view angle of the optical lens, CT3 is a thickness of the third lens on the optical axis, and CT4 is a thickness of the fourth lens on the optical axis.

9. An image capture module, comprising: The camera module comprises a photosensitive chip and the optical lens according to any one of claims 1 to 8, and the photosensitive chip is arranged on the image side of the optical lens.

10. A terminal device, comprising: The camera module according to claim 9 is arranged in the housing.

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