Optical lens, camera module and terminal equipment

Abstract

The invention discloses an optical lens, a camera module and a terminal device, and the optical lens comprises six lens elements with refractive power, and the six lens elements sequentially comprise a first lens element with negative refractive power, a second lens element with negative refractive power, a third lens element with negative refractive power, a fourth lens element with negative refractive power, a fifth lens element with negative refractive power and a sixth lens element with negative refractive power from the object side to the image side along the optical axis, a second lens element with negative refractive power having an object-side surface being concave in a paraxial region and an image-side surface being convex in a paraxial region; a third lens element with positive refractive power having an object-side surface being convex in a paraxial region thereof; a fourth lens element with positive refractive power having an object-side surface being convex in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof; a fifth lens element with negative refractive power having an object-side surface being concave in a paraxial region thereof; a sixth lens element having an object-side surface being convex in a paraxial region and an image-side surface being concave in a paraxial region; the optical lens satisfies the following relational expressions: 115 DEG < = FOV < = 130 DEG, and 4.8 DEG < = TTL / F < = 5.5. The optical lens provided by the invention meets the requirements of large field of view, high resolution and miniaturization.

Description

Technical Field

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

[0002] Thanks to the rapid development of automotive assisted driving systems in recent years, optical lenses have been widely used in automobiles. Among them, optical lenses can be widely used in vehicle-mounted reversing visual systems, driving recorders, automatic parking and panoramic parking systems, road finding systems, etc. On-board optical lenses are key components for automatic driving assistance systems to obtain external information. With the rapid development of automatic driving assistance systems, the performance requirements for forward-looking optical lenses are becoming increasingly higher, and are developing in the direction of large field of view, high resolution and miniaturization. Therefore, there is a need for an optical lens with a large field of view, high resolution and miniaturization to meet automotive forward-looking applications. 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 meet the requirements of large field of view, high resolution and miniaturization.

[0004] In order to achieve the above-mentioned purpose, in a first aspect, the present application discloses an optical lens, which has a total of six lenses with refractive power, which include, in order from the object side to the image side along the optical axis: a first lens, which has 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, which has 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, which has positive refractive power, the object side surface of the third lens is convex at the near optical axis; a fourth lens, which has positive refractive power, the object side surface of the fourth lens is concave at the near optical axis The optical lens is convex, and the image side surface of the fourth lens is convex at the near optical axis; the fifth lens has negative refractive power, and the object side surface of the fifth lens is concave at the near optical axis; the sixth lens has 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 concave at the near optical axis; the optical lens satisfies the following relationship: 115°≤FOV≤130°, 4.8≤TTL / F≤5.5; wherein 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 by the present application, the first lens with negative refractive power, matched with the object side surface that is convex at the near optical axis and the image side surface that is concave at the near optical axis, can effectively control the effective aperture of the first lens of the optical lens, so that the optical lens has a larger light incident angle, which is conducive to realizing a large field of view of the optical lens; the second lens with negative refractive power, matched with the object side surface that is concave at the near optical axis and the image side surface that is convex at the near optical axis, can effectively constrain the light incident at a large angle projected by the first lens, so that the light is smoothly projected after passing through the second lens, which is conducive to reducing the field curvature astigmatism of the optical lens and reducing distortion; the third lens with positive refractive power, matched with the object side surface that is convex at the near optical axis, the light smoothly projected by the second lens can be converged after passing through the third lens, reducing the decentering sensitivity of the optical lens and reducing the total optical length of the optical lens; the fourth lens with positive refractive power can be well bonded with the fifth lens with negative refractive power to form a bonded lens, which is conducive to reducing the chromatic aberration of the optical lens and correcting the spherical aberration of the optical lens, improving the resolution of the optical lens, and reducing the length of the optical lens. In addition, the fourth lens with positive refractive power, matched with the object side surface that is convex at the near optical axis and the image side surface that is convex at the near optical axis, is beneficial to improving the resolving power of the optical lens; the fifth lens with negative refractive power, matched with the object side surface that is concave at the near optical axis, allows the light projected through the fourth lens to enter smoothly, which is beneficial to reducing the chromatic aberration of the optical lens and correcting the spherical aberration of the optical lens, thereby improving the resolution of the optical lens; the sixth lens with refractive power, matched with the object side surface that is convex at the near optical axis and the image side surface that is concave at the near optical axis, allows the light projected smoothly through the fifth lens to converge after passing through the object side surface of the sixth lens and to enter the imaging surface smoothly through the image side surface of the sixth lens, thereby improving the resolving power of the optical lens and at the same time facilitating the optical lens to adapt to a large-size imaging surface.

[0006] When the optical lens satisfies 115°≤FOV≤130°, the optical lens has a larger field of view, which is beneficial for the optical lens to obtain subject information within a larger angle, so that the optical lens meets the requirements of a large field of view; when the optical lens satisfies 4.8≤TTL / F≤5.5, the ratio of the total length of the optical lens to the effective focal length of the optical lens can be controlled within a reasonable range, which is beneficial for better convergence of light on the imaging surface, and for improving the resolution capability of the optical lens, while enabling the optical lens to achieve a miniaturized design.

[0007] In a second aspect, the present application discloses a camera module, the camera module comprising a photosensitive chip and the optical lens as described in the first aspect, the photosensitive chip being arranged on the image side of the optical lens. The camera module with the optical lens can meet the requirements of large field of view, high resolution and miniaturization.

[0008] In a third aspect, the present application discloses a terminal device, comprising a housing and a camera module as described in the second aspect, wherein the camera module is arranged in the housing. The terminal device having the camera module can meet the requirements of large field of view, high resolution and miniaturization. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

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

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

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

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

[0017] Fig. 9 It is a schematic diagram of the structure of the optical lens disclosed in the fifth embodiment of the present application.

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

[0019] Fig.11 It is a schematic diagram of the structure of the optical lens disclosed in the sixth embodiment of the present application.

[0020] Fig.12 It is a longitudinal spherical aberration curve diagram, an astigmatism curve diagram and a distortion curve diagram of the optical lens disclosed in the sixth embodiment of the present application.

[0021] Fig.13 It is a structural schematic diagram of the camera module disclosed in this application.

[0022] Fig.14 It is a structural schematic diagram of the terminal device disclosed in this application. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1 The embodiment of the present application discloses an optical lens 100, which has six lenses with refractive power, which are 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 from the object side to the image side along the optical axis O. When imaging, light enters 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 forms an image on the imaging surface IMG of the optical lens 100.

[0025] 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 refractive power.

[0026] 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; 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; 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 concave at the near optical axis O.

[0027] In the optical lens 100 provided in the present application, the first lens L1 with negative refractive power, in combination with the object-side surface S1 with a convex surface at the near optical axis O and the image-side surface S2 with a concave surface at the near optical axis O, can effectively control the effective aperture of the first lens L1 of the optical lens 100, so that the optical lens 100 has a larger incident angle of light, which is conducive to achieving a large field of view of the optical lens 100; the second lens L2 with negative refractive power, in combination with the object-side surface S3 with a concave surface at the near optical axis O and the image-side surface S4 with a convex surface at the near optical axis O, can effectively constrain the light incident at a large angle projected by the first lens L1, so that the light is smoothly projected after passing through the second lens L2 , which is beneficial to reducing the field curvature and astigmatism of the optical lens 100 and reducing distortion; the third lens L3 with positive refractive power is matched with the object-side surface S5 which is convex at the near optical axis O, and the light smoothly projected by the second lens L2 can be converged after passing through the third lens L3, thereby reducing the decentering sensitivity of the optical lens 100 and reducing the total optical length of the optical lens 100; the fourth lens L4 with positive refractive power can be well bonded with the fifth lens L5 with negative refractive power to form a bonded lens, which is beneficial to reducing the chromatic aberration of the optical lens 100 and correcting the spherical aberration of the optical lens 100, thereby improving the resolution of the optical lens 100 and reducing the size of the optical lens 100. In addition, the fourth lens L4 with positive refractive power is matched with the object-side surface S7 which is convex at the near optical axis O and the image-side surface S8 which is convex at the near optical axis O, which is beneficial to improving the resolution capability of the optical lens 100; the fifth lens L5 with negative refractive power is matched with the object-side surface S9 which is concave at the near optical axis O, so that the light projected by the fourth lens L4 is smoothly incident, which is beneficial to reducing the chromatic aberration of the optical lens 100 and correcting the spherical aberration of the optical lens 100, thereby improving the resolution of the optical lens 100; the sixth lens L6 with refractive power is matched with the object-side surface S11 which is convex at the near optical axis O and the image-side surface S12 which is concave at the near optical axis O, and the light smoothly projected by the fifth lens L5 is converged after passing through the object-side surface S11 of the sixth lens L6 and smoothly incident on the imaging surface IMG through the image-side surface S12 of the sixth lens L6, thereby improving the resolution capability of the optical lens 100 and facilitating the optical lens 100 to adapt to a large-sized imaging surface. Therefore, the optical lens 100 of the present application can meet the requirements of large field of view, high resolution and miniaturization.

[0028] In some embodiments, when the optical lens 100 is applied to terminal devices such as vehicle-mounted devices and driving recorders, 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 can have a 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, and some lenses can be made of plastic, so that while ensuring that the influence of temperature on the lens is reduced to achieve a better imaging effect, the processing cost of the lens and the weight of the lens can be reduced, 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 terminal devices such as smart phones and smart tablets, 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.

[0029] In some embodiments, considering that the spherical lens has the characteristics of simple manufacturing process and low production cost, and can be convenient for flexible design of the lens surface shape, the imaging resolution capability of the optical lens 100 is improved. The aspherical lens can make the object side or image side of the lens have a more flexible design, so that the lens can well solve the undesirable phenomena such as unclear imaging, distorted field of view or narrow field of view when the lens is small and thin, and the optical lens 100 can have good imaging quality without too many lenses, which is conducive to shortening 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, through the combined design of spherical and aspherical surfaces, not only can the processability of each lens be improved, which is beneficial to the surface design, but also the object side or image side of the lens can have a more flexible design, so that each lens can solve the undesirable phenomena such as unclear imaging, distorted field of view or narrow field of view in a small size and thinner condition, and the optical lens 100 can have good imaging quality without 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 each lens in the optical lens 100 can be spherical, aspherical or any combination of spherical and aspherical surfaces, which can be selected according to actual needs, so it is not specifically limited in this embodiment.

[0030] In some embodiments, the optical lens 100 further includes a stop STO, which may be an aperture stop and / or a field stop. For example, the stop STO may be an aperture stop, or the stop STO may be a field stop, or the stop STO may be an aperture stop and a field stop. By setting the stop STO between the image side surface S4 of the second lens L2 and the object side surface S5 of the third lens L3, the exit pupil can be moved away from the imaging surface 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. It is understandable that in other embodiments, the stop STO may also be set between other lenses, and the setting is adjusted according to actual conditions, and this embodiment does not specifically limit this.

[0031] In some embodiments, the optical lens 100 further includes a filter IR, and the filter IR is disposed between the sixth lens L6 and the imaging surface IMG of the optical lens 100. Optionally, the filter IR may be an infrared cutoff filter to filter out infrared light and pass visible light, so that the imaging is more in line with the visual experience of the human eye, thereby improving the imaging quality. In other embodiments, the filter IR may be an infrared bandpass filter to allow infrared light to pass through and reflect visible light to achieve infrared imaging of the optical lens 100, so that the optical lens 100 can be imaged in a dark environment or special application scenarios and obtain better imaging quality. It is understandable that the filter IR can be made of plastic, or can be made of optical glass coating, or an infrared filter of other materials, which can be selected according to actual needs and is not specifically limited in this embodiment.

[0032] 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, so as to protect and prevent dust from the photosensitive chip. The protective glass CG may be made of plastic, or may be made of optical glass coating, or protective glass of other materials, which may be selected according to actual needs and is not specifically limited in this embodiment. It is understandable that the protective glass CG may be a part of the optical lens 100, or may 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.

[0033] In some embodiments, the optical lens 100 satisfies the relationship: 115°≤FOV≤130°. Wherein, FOV is the maximum field of view angle of the optical lens 100. Further, 115°≤FOV≤127°. Specifically, FOV can be 115°, 116°, 117°, 118°, 119°, 120°, 122°, 123°, 124°, 125°, 126°, 127°, 128°, 129°, 130°, etc. When the optical lens 100 satisfies the above relationship, the optical lens 100 has a larger field of view angle, which is beneficial for the optical lens 100 to obtain the subject information within a larger angle, so that the optical lens 100 meets the requirements of a large field of view.

[0034] In some embodiments, the optical lens 100 satisfies the relationship: 4.8≤TTL / F≤5.5. Wherein, 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 on the optical axis O, and F is the effective focal length of the optical lens 100. Further, 4.886≤TTL / F≤5.415. Specifically, TTL / F can be 4.8, 4.85, 4.886, 4.9, 4.95, 5.0, 5.05, 5.1, 5.15, 5.2, 5.25, 5.3, 5.35, 5.4, 5.415, 5.45, 5.5, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of the total length TTL of the optical lens 100 and the effective focal length F of the optical lens 100, it is beneficial to better converge the light on the imaging surface IMG, to improve the resolution capability of the optical lens 100, to reduce the sensitivity of the optical lens 100, and to realize a miniaturized design of the optical lens 100.

[0035] In some embodiments, the optical lens 100 satisfies the relationship: 6.5≤TTL / SD1≤7.2. Wherein, SD1 is half of the maximum effective aperture of the object side S1 of the first lens L1. Further, 6.503≤TTL / SD1≤7.105. Specifically, TTL / SD1 can be 6.5, 6.503, 6.55, 6.6, 6.65, 6.7, 6.75, 6.8, 6.85, 6.9, 6.95, 7.0, 7.05, 7.1, 7.105, 7.15, 7.2, etc. When the optical lens 100 satisfies the above relationship, under the condition of a certain total length of the optical lens 100, by reasonably configuring the ratio of the total length TTL of the optical lens 100 to the maximum effective aperture SD1 of the object side S1 of the first lens L1, the head size and volume of the optical lens 100 are effectively limited, which is conducive to realizing a miniaturized design of the optical lens 100.

[0036] In some embodiments, the optical lens 100 satisfies the relationship: 1.24≤F / ImgH≤1.4. Wherein, ImgH is half of the image height corresponding to the maximum field angle of the optical lens 100. Further, 1.248≤F / ImgH≤1.382. Specifically, F / ImgH can be 1.24, 1.248, 1.25, 1.26, 1.28, 1.29, 1.3, 1.31, 1.32, 1.33, 1.34, 1.35, 1.36, 1.37, 1.38, 1.382, 1.39, 1.4, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of F to ImgH, it is beneficial to improve the resolution of the optical lens 100, thereby improving the imaging quality of the optical lens 100.

[0037] In some embodiments, the optical lens 100 satisfies the relationship: -2.1≤F1 / F≤-1.7. Wherein, F1 is the effective focal length of the first lens L1. Further, -2.031≤F1 / F≤-1.722. Specifically, F1 / F can be -2.1, -2.05, -2.0, -2.031, -1.95, -1.9, -1.85, -1.8, -1.75, -1.722, -1.7, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of the effective focal length F1 of the first lens L1 to the effective focal length F of the optical lens 100, it is possible to avoid the first lens L1 from introducing too much spherical aberration and effectively correct the aberration, thereby improving the resolution capability of the optical lens 100.

[0038] 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, 1.915≤F3 / F≤2.148. Specifically, F3 / F can be 1.9, 1.915, 1.95, 2.0, 2.05, 2.1, 2.148, 2.15, 2.2, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of the effective focal length F3 of the third lens L3 to the effective focal length F of the optical lens 100, the incident light of the first lens L1 and the second lens L2 can be effectively collected and compressed, so that the light can smoothly transition to the fourth lens L4 through the third lens L3, reducing the generation of spherical aberration and aberration, thereby improving the imaging quality of the optical lens 100.

[0039] In some embodiments, the optical lens 100 satisfies the relationship: 1≤F4 / F≤1.4. Wherein, F4 is the effective focal length of the fourth lens L4. Further, 1.086≤F4 / F≤1.365. Specifically, F4 / F can be 1.0, 1.05, 1.086, 1.1, 1.15, 1.2, 1.25, 1.3, 1.35, 1.365, 1.4, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of the effective focal length F4 of the fourth lens L4 to the effective focal length F of the optical lens 100, the aberration can be effectively corrected after the fourth lens L4 is combined with the fifth lens L5, thereby further improving the resolution of the optical lens 100.

[0040] In some embodiments, the optical lens 100 satisfies the relationship: -11≤F1 / CT1≤-8. Wherein, CT1 is the thickness of the first lens L1 on the optical axis O. Further, -10.345≤F1 / CT1≤-8.734. Specifically, F1 / CT1 can be -11, -10.5, -10.345, -10, -9.5, -9, -8.734, -8.5, -8, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of the effective focal length of the first lens L1 to the thickness of the first lens L1, the incident light entering the optical lens 100 at a large angle can enter smoothly, thereby expanding the field of view angle range of the optical lens 100, so that the optical lens 100 meets the demand of a large field of view.

[0041] In some embodiments, the optical lens 100 satisfies the relationship: 1.3≤SAGS2 / CT1≤1.6. Wherein, SAGS2 is the sagittal height of the edge of the optical effective diameter of the image side surface S2 of the first lens L1. Further, 1.313≤SAGS2 / CT1≤1.574. Specifically, SAGS2 / CT1 can be 1.3, 1.313, 1.35, 1.4, 1.45, 1.5, 1.55, 1.574, 1.6, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of SAGS2 to CT1, it is beneficial to control the curvature of the image side surface S2 of the first lens L1, thereby controlling the head aperture of the first lens L1, which is beneficial to the processing of the first lens L1. When the ratio of SAGS2 to CT1 exceeds the upper limit of the above relationship, the image side surface S2 of the first lens L1 is too curved, which is not conducive to the surface shape control of the first lens L1 and increases the risk of ghosting. When the ratio of SAGS2 to CT1 is lower than the lower limit of the above relationship, the first lens L1 is too thick, which affects the miniaturization of the entire optical lens 100.

[0042] In some embodiments, the optical lens 100 satisfies the relationship: 0.95≤SD1 / ImgH≤1.05. Further, 0.95≤SD1 / ImgH≤1.038. Specifically, SD1 / ImgH can be 0.95, 0.96, 0.97, 0.98, 0.99, 1.00, 1.01, 1.02, 1.03, 1.038, 1.04, 1.05, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of SD1 to ImgH, the optical lens 100 can meet the requirements of adapting to a large-sized imaging surface IMG while taking into account the miniaturized design of the head of the optical lens 100.

[0043] In some embodiments, the optical lens 100 satisfies the relationship: 0.8≤SD7 / SD6≤1.2. Among them, SD6 is half of the maximum effective aperture of the image side S6 of the third lens L3, and SD7 is half of the maximum effective aperture of the object side S7 of the fourth lens L4. Further, 0.868≤SD7 / SD6≤1.157. Specifically, SD7 / SD6 can be 0.8, 0.85, 0.8680.9, 0.95, 1.0, 1.05, 1.1, 1.15, 1.157, 1.2, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of SD7 to SD6, it is possible to reduce the total optical length of the optical lens 100 while using the third lens L3 to expand the peripheral field of view light, thereby reducing the decentering sensitivity of the optical lens 100, which is beneficial to improving the production yield of the optical lens 100 and realizing the miniaturization design of the optical lens 100.

[0044] In some embodiments, the optical lens 100 satisfies the relationship: 0.5≤CT4 / CT5≤4.62. Wherein, CT4 is the thickness of the fourth lens L4 on the optical axis O, and CT5 is the thickness of the fifth lens L5 on the optical axis O. Further, 0.503≤CT4 / CT5≤4.377. Specifically, CT4 / CT5 can be 0.5, 0.503, 0.7, 0.9, 1.0, 1.1, 1.3, 1.4, 1.5, 1.7, 1.9, 2.0, 2.2, 2.4, 2.6, 2.8, 3.0, 3.1, 3.2, 3.4, 3.6, 3.8, 4.0, 4.1, 4.3, 4.377, 4.5, 4.6, 4.62, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of the thickness of the fourth lens L4 to the fifth lens L5, the length of the fourth lens L4 and the fifth lens L5 after bonding is reduced, which is conducive to miniaturization of the optical lens 100.

[0045] In some embodiments, the optical lens 100 satisfies the relationship: -2≤F5 / F4≤-1. Wherein, F5 is the effective focal length of the fifth lens L5. Further, -1.683≤F5 / F4≤-1.036. Specifically, F5 / F4 can be -2, -1.9, -1.8, -1.7, -1.6, -1.683, -1.5, -1.4, -1.3, -1.2, -1.1, -1.036, -1, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of the effective focal length F5 of the fifth lens L5 to the effective focal length F4 of the fourth lens L4, the fourth lens L4 and the fifth lens L5 are prevented from introducing too much spherical aberration and the aberration can be effectively corrected, thereby improving the resolution of the optical lens 100 and reducing the length of the fourth lens L4 and the fifth lens L5 after bonding.

[0046] In some embodiments, the optical lens 100 satisfies the relationship: 0.95≤R3 / (R4+CT2)≤1.7. Wherein, R3 is the radius of curvature of the object side surface S3 of the second lens L2 at the optical axis O, R4 is the radius of curvature of the image side surface S4 of the second lens L2 at the optical axis O, and CT2 is the thickness of the second lens L2 on the optical axis O. Further, 0.997≤R3 / (R4+CT2)≤1.681. Specifically, R3 / (R4+CT2) can be 0.95, 0.997, 1.0, 1.05, 1.1, 1.15, 1.2, 1.25, 1.3, 1.35, 1.4, 1.45, 1.5, 1.55, 1.6, 1.65, 1.681, 1.7, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratios of R3, R4 and CT2, it is beneficial to make the shape of the second lens L2 close to a concentric circle, to make the light passing through the second lens L2 transition smoothly, and to reduce the front port diameter of the optical lens 100, reduce the volume of the optical lens 100, and realize the miniaturization design of the optical lens 100 and reduce the cost.

[0047] In some embodiments, the optical lens 100 satisfies the relationship: 1.6 mm -1 ≤|(Vd4-Vd5) / F45|≤3.4mm -1 Wherein, 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, 1.661 mm -1 ≤|(Vd4-Vd5) / F45|≤3.301mm -1 Specifically, |(Vd4-Vd5) / F45| may be 1.6 mm -1 , 1.661mm -1 , 1.7mm -1 , 1.8mm -1, 1.9mm -1 , 2.0mm -1 , 2.1mm -1 , 2.2mm -1 , 2.3mm -1 , 2.4mm -1 , 2.5mm -1 , 2.6mm -1 , 2.7mm -1 , 2.8mm -1 , 2.9mm -1 , 3.0mm -1 、3.1mm -1 , 3.2mm -1 , 3.3mm -1 、3.301mm -1 、3.4mm -1 When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of the difference in the Abbe numbers of the fourth lens L4 and the fifth lens L5 to the combined effective focal length F45 of the fourth lens L4 and the fifth lens L5, the chromatic aberration of the optical system can be effectively corrected, the authenticity of the chromatic aberration can be restored, and the resolution and imaging quality of the optical lens 100 can be improved.

[0048] In some embodiments, the optical lens 100 satisfies the relationship: 2.9≤F45 / F≤6.2. Further, 2.993≤F45 / F≤6.183. Specifically, F45 / F can be 2.9, 2.993, 3.0, 3.1, 3.3, 3.5, 3.7, 3.9, 4.0, 4.2, 4.4, 4.6, 4.8, 5.0, 5.1, 5.3, 5.5, 5.7, 5.9, 6.0, 6.1, 6.183, 6.2, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of the effective combined focal length F45 of the fourth lens L4 and the fifth lens L5 to the effective focal length F of the optical lens 100, it is beneficial to correct chromatic aberration and balance various aberrations, improve the resolution of the optical lens 100, and can effectively reduce the tolerance sensitivity and improve the imaging quality of the optical lens 100.

[0049] In some embodiments, the optical lens 100 satisfies the relationship: 1.4≤CT4 / ET4≤2.7. 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 in the direction of the optical axis O. Further, 1.402≤CT4 / ET4≤2.678. Specifically, CT4 / ET4 can be 1.4, 1.402, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.678, 2.7, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of CT4 to ET4, the ratio of the center thickness to the edge thickness of the fourth lens L4 is reasonably controlled, so that the overall thickness of the fourth lens L4 is reasonable, which is convenient for gluing the fourth lens L4 and the fifth lens L5, and can also achieve a miniaturized design of the optical lens 100.

[0050] In some embodiments, the optical lens 100 satisfies the relationship: |R5 / R6|≤0.55. Wherein, R5 is the radius of curvature of the object side surface S5 of the third lens L3 at the optical axis O, and R6 is the radius of curvature of the image side surface S6 of the third lens L3 at the optical axis O. Further, 0.086≤|R5 / R6|≤0.541. Specifically, |R5 / R6| can be 0.001, 0.086, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.541, 0.55, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of the curvature radii of the object-side surface S5 and the image-side surface S6 of the third lens L3, the refractive power of the third lens L3 of the optical lens 100 is evenly configured, which is beneficial to correcting the distortion and aberration generated by the first lens L1 and the second lens L2, reducing the sensitivity of the performance change of the optical lens 100, and improving the resolution capability.

[0051] In some embodiments, the optical lens 100 satisfies the relationship: 0.3≤R11 / R12≤1.4. Wherein, R11 is the radius of curvature of the object-side surface S11 of the sixth lens L6 at the optical axis O, and R12 is the radius of curvature of the image-side surface S12 of the sixth lens L6 at the optical axis O. Further, 0.330≤R11 / R12≤1.371. Specifically, R11 / R12 can be 0.3, 0.330, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.371, 1.4, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of the curvature radii of the object-side surface S11 and the image-side surface S12 of the sixth lens L6, the refractive power of the sixth lens L6 of the optical lens 100 is evenly configured, which is beneficial to correcting the distortion and aberration generated by the first lens L1, the second lens L2, the third lens L3, the fourth lens L4 and the fifth lens L5, reducing the sensitivity of the performance change of the optical lens 100, and improving the resolution capability.

[0052] In some embodiments, the optical lens 100 satisfies the relationship: 1.3≤CT6 / CT56≤33. Wherein, CT6 is the thickness of the sixth lens L6 on the optical axis O, and CT56 is the distance between the image side surface S10 of the fifth lens L5 and the object side surface S11 of the sixth lens L6 on the optical axis O. Further, 1.371≤CT6 / CT56≤32.639. Specifically, CT6 / CT56 can be 1.3, 1.371, 1.4, 1.6, 1.8, 2, 3, 5, 7, 9, 10, 15, 20, 25, 26, 28, 29, 30, 31, 32, 32.639, 33, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of CT6 to CT56, the thickness of the sixth lens L6 is effectively controlled, which is conducive to realizing the miniaturization design of the optical lens 100.

[0053] In some embodiments, the optical lens 100 satisfies the relationship: 2.1≤F*tan(FOV / 2) / ImgH≤2.55. Further, 2.170≤F*tan(FOV / 2) / ImgH≤2.503. Specifically, F*tan(FOV / 2) / ImgH can be 2.1, 2.15, 2.170, 2.2, 2.25, 2.3, 2.35, 2.4, 2.45, 2.5, 2.503, 2.55, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of F, FOV and ImgH, the miniaturization of the optical lens 100 can be achieved, and the optical lens 100 can also have the characteristic of a large field of view.

[0054] In some embodiments, the optical lens 100 satisfies the relationship: -63≤arctan(1 / K12)≤-57. Wherein, K12 is the edge slope of the image side surface S12 of the sixth lens L6 corresponding to the maximum field angle of the optical lens 100. Further, -62.668≤arctan(1 / K12)≤-57.668. Specifically, arctan(1 / K12) can be -63, -62.668, -62.5, -62, -61.5, -61, -60.5, -60, -59.5, -59, -58.5, -58, -57.668, -57.5, -57, etc. When the optical lens 100 satisfies the above relationship, the opening angle of the central area of ​​the image-side surface S12 of the sixth lens L6 can be a positive opening angle bent toward the image-side surface S12, and the opening angle of the edge area can be zero or a negative opening angle bent toward the object-side surface S, so that the opening angles of the central area and the edge area of ​​the image-side surface S12 of the sixth lens L6 are different, and thus an inflection point exists on the image-side surface S12 of the sixth lens L6, which is beneficial to correcting astigmatism and field curvature, and is beneficial to improving the resolution capability of the optical lens 100.

[0055] In some embodiments, the optical lens 100 satisfies the relationship: 6.7≤TTL / ImgH≤6.8. Further, 6.732≤TTL / ImgH≤6.758. Specifically, TTL / ImgH can be 6.7, 6.71, 6.72, 6.73, 6.732, 6.74, 6.75, 6.758, 6.76, 6.77, 6.78, 6.79, 6.8, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of TTL to ImgH, the optical lens 100 can meet both the requirements of high pixels and the requirements of miniaturization.

[0056] In some embodiments, the optical lens 100 satisfies the relationship: 0.05≤TTL / ImgH / FOV≤0.06. Further, 0.053≤TTL / ImgH / FOV≤0.059. Specifically, TTL / ImgH / FOV can be 0.05, 0.051, 0.052, 0.053, 0.054, 0.055, 0.056, 0.057, 0.058, 0.059, 0.06, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of TTL, ImgH, and FOV, the requirement of the optical lens 100 to adapt to a large-size imaging surface IMG can be met, while the requirement of miniaturization of the optical lens 100 can be met, so that the optical lens 100 can simultaneously meet the requirements of a large imaging surface IMG and miniaturization.

[0057] In some embodiments, the optical lens 100 satisfies the relationship: 1.5≤FNO≤1.8. Wherein, FNO is the aperture number of the optical lens 100. Further, 1.6≤FNO≤1.7, and further, 1.617≤FNO≤1.68. Specifically, FNO can be 1.5, 1.51, 1.53, 1.55, 1.57, 1.58, 1.59, 1.6, 1.61, 1.617, 1.63, 1.65, 1.66, 1.68, 1.69, 1.7, 1.71, 1.73, 1.75, 1.77, 1.78, 1.79, 1.8, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring FNO between 1.5 and 1.8, the optical lens 100 has the characteristics of a large aperture, and the optical lens 100 has a sufficient amount of light entering, which can make the image taken by the optical lens 100 clearer, so that it can be suitable for shooting high-quality night scenes, starry sky and other object space scenes with low brightness.

[0058] In some embodiments, the optical lens 100 satisfies the relationship: F2 / F≤-6. Further, -117.629≤F2 / F≤-6.755. Specifically, F2 / F can be -120, -117.629, -110, -100, -90, -80, -70, -60, -50, -40, -30, -20, -10, -9, -8, -7, -6.755, -6, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of the effective focal length F2 of the second lens L2 to the effective focal length F of the optical lens 100, it is possible to avoid the second lens L2 from introducing too much spherical aberration and effectively correct the aberration, which is beneficial to improving the resolution of the optical lens 100.

[0059] In some embodiments, the optical lens 100 satisfies the relationship: -2.1≤F5 / F≤-1.4. Further, -2.002≤F5 / F≤-1.413. Specifically, F5 / F can be -2.1, -2.05, -2.002, -2, -1.95, -1.9, -1.85, -1.8, -1.75, -1.7, -1.65, -1.6, -1.55, -1.5, -1.45, -1.413, -1.4, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of the effective focal length F5 of the fifth lens L5 to the effective focal length F of the optical lens 100, the fifth lens L5 is prevented from introducing too much spherical aberration and the aberration can be effectively corrected, which is beneficial to improving the resolution of the optical lens 100.

[0060] In some embodiments, the optical lens 100 satisfies the relationship: 4.5≤|F6 / F|≤30. Wherein, F6 is the effective focal length of the sixth lens L6. Further, 4.709≤|F6 / F|≤29.057. Specifically, |F6 / F| can be 4.5, 4.709, 5, 6, 7, 8, 9, 10, 12, 14, 16, 18, 20, 21, 23, 25, 27, 29, 29.057, 30, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of the effective focal length F6 of the sixth lens L6 to the effective focal length F of the optical lens 100, it is possible to avoid the sixth lens L6 from introducing too much spherical aberration and effectively correct the aberration, which is beneficial to improving the resolution capability of the optical lens 100.

[0061] In some embodiments, the optical lens 100 satisfies the relationship: F2 / CT2≤-6. Further, -108.628≤F2 / CT2≤-6.535. Specifically, F2 / CT2 can be -110, -108.628, -105, -100, -90, -80, -70, -60, -50, -40, -30, -20, -10, -9, -8, -7, -6.535, -6, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of the effective focal length F2 of the second lens L2 to the thickness CT2 of the second lens L2, the deflection angle of the light in the optical lens 100 is effectively controlled, so that the light is smoothly projected after passing through the second lens L2, thereby reducing the field curvature astigmatism of the optical lens 100, which is beneficial to reducing the distortion of the optical lens 100.

[0062] In some embodiments, the optical lens 100 satisfies the relationship: 1.3≤F3 / CT3≤7.1. Wherein, CT3 is the thickness of the third lens L3 on the optical axis O. Further, 1.373≤F3 / CT3≤7.097. Specifically, F3 / CT3 can be 1.3, 1.373, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2, 2.1, 2.3, 2.5, 2.7, 2.9, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.1, 6.2, 6.3, 6.4, 6.5, 6.6, 6.7, 6.8, 6.9, 7, 7.097, 7.1, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of the effective focal length F3 of the third lens L3 to the thickness CT3 of the third lens L3, the light smoothly projected by the second lens L2 is converged, thereby reducing the decentering sensitivity of the optical lens 100, which is beneficial to improving the resolution of the optical lens 100.

[0063] In some embodiments, the optical lens 100 satisfies the relationship: 1.1≤F4 / CT4≤2.8. Further, 1.150≤F4 / CT4≤2.748. Specifically, F4 / CT4 can be 1.1, 1.150, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.748, 2.8, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of the effective focal length F4 of the fourth lens L4 to the thickness CT4 of the fourth lens L4, it is beneficial to reduce the chromatic aberration of the optical lens 100 and improve the resolution of the optical lens 100.

[0064] In some embodiments, the optical lens 100 satisfies the relationship: -9≤F5 / CT5≤-2. Further, -8.458≤F5 / CT5≤-2.328. Specifically, F5 / CT5 can be -9, -8.5, -8.458, -8, -7.5, -7, -6.5, -6, -5.5, -5, -4.5, -4, -3.5, -3, -2.5, -2.328, -2, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of the effective focal length F5 of the fifth lens L5 to the thickness CT5 of the fifth lens L5, the fifth lens L5 can effectively correct the aberration caused by the deflection of light by each lens on the object side, which is beneficial to improving the resolution ability of the optical lens 100.

[0065] In some embodiments, the optical lens 100 satisfies the relationship: 12≤|F6 / CT6|≤65. Further, 12.458≤|F6 / CT6|≤62.657. Specifically, |F6 / CT6| can be 12, 12.458, 13, 14, 15, 16, 17, 18, 19, 20, 22, 24, 26, 28, 30, 35, 40, 45, 50, 55, 56, 57, 58, 59, 60, 61, 62, 62.657, 63, 64, 65, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of the effective focal length F6 of the sixth lens L6 to the thickness CT6 of the sixth lens L6, it is avoided that the effective focal length of the sixth lens L6 is too large to generate astigmatism that is difficult to correct, which is beneficial to improving the resolution of the optical lens 100.

[0066] In some embodiments, the optical lens 100 satisfies the relationship: 1.6≤R1 / R2≤1.85. Wherein, R1 is the radius of curvature of the object side surface S1 of the first lens L1 at the optical axis O, and R2 is the radius of curvature of the image side surface S2 of the first lens L1 at the optical axis O. Further, 1.646≤R1 / R2≤1.822. Specifically, R1 / R2 can be 1.6, 1.61, 1.62, 1.63, 1.64, 1.646, 1.65, 1.66, 1.67, 1.68, 1.69, 1.7, 1.71, 1.72, 1.73, 1.74, 1.75, 1.76, 1.77, 1.78, 1.79, 1.8, 1.81, 1.82, 1.822, 1.83, 1.84, 1.85, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of the curvature radii of the object-side surface S1 and the image-side surface S2 of the first lens L1, the refractive power of the first lens L1 of the optical lens 100 is evenly configured, and the effective aperture of the first lens L1 of the optical lens 100 is effectively controlled, which is conducive to achieving a large field of view of the optical lens 100.

[0067] In some embodiments, the optical lens 100 satisfies the relationship: 0.55≤R3 / R4≤0.75. Further, 0.580≤R3 / R4≤0.733. Specifically, R3 / R4 can be 0.55, 0.56, 0.57, 0.58, 0.59, 0.6, 0.61, 0.62, 0.63, 0.64, 0.65, 0.66, 0.67, 0.68, 0.69, 0.7, 0.71, 0.72, 0.73, 0.733, 0.74, 0.75, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of the radius of curvature of the object side surface S3 and the image side surface S4 of the second lens L2, the refractive power of the second lens L2 of the optical lens 100 is uniformly configured, which is conducive to reducing the field curvature astigmatism of the optical lens 100 and reducing distortion.

[0068] In some embodiments, the optical lens 100 satisfies the relationship: -2≤R7 / R8≤-1. Wherein, R7 is the radius of curvature of the object side surface S7 of the fourth lens L4 at the optical axis O, and R8 is the radius of curvature of the image side surface S8 of the fourth lens L4 at the optical axis O. Further, -1.976≤R7 / R8≤-1.002. Specifically, R7 / R8 can be -2, -1.976, -1.9, -1.8, -1.7, -1.6, -1.5, -1.4, -1.3, -1.2, -1.1, -1.002, -1, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of the curvature radii of the object-side surface S7 and the image-side surface S8 of the fourth lens L4, the refractive power of the fourth lens L4 of the optical lens 100 is evenly configured, which is beneficial to reducing chromatic aberration and spherical aberration, reducing the sensitivity of the performance change of the optical lens 100, and improving the resolution capability.

[0069] In some embodiments, the optical lens 100 satisfies the relationship: |R9 / R10|≤0.4. Wherein, R9 is the radius of curvature of the object-side surface S9 of the fifth lens L5 at the optical axis O, and R10 is the radius of curvature of the image-side surface S10 of the fifth lens L5 at the optical axis O. Further, 0.036≤|R9 / R10|≤0.038. Specifically, |R9 / R10| can be 0.001, 0.036, 0.05, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.38, 0.4, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of the curvature radii of the object-side surface S9 and the image-side surface S10 of the fifth lens L5, the refractive power of the fifth lens L5 of the optical lens 100 is evenly configured, which is beneficial to correcting the distortion and aberration generated by the first lens L1, the second lens L2, the third lens L3 and the fourth lens L4, reducing the sensitivity of the performance change of the optical lens 100, and helping to improve the resolution capability of the optical lens 100.

[0070] In some embodiments, the optical lens 100 satisfies the relationship: 0.55≤CT1 / ET1≤0.7. 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 in the direction of the optical axis O. Further, 0.56≤CT1 / ET1≤0.69. Specifically, CT1 / ET1 can be 0.55, 0.56, 0.57, 0.58, 0.59, 0.6, 0.61, 0.62, 0.63, 0.64, 0.65, 0.66, 0.67, 0.68, 0.69, 0.7, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of CT1 to ET1, the ratio of the center thickness to the edge thickness of the first lens L1 is reasonably controlled, so that the overall thickness of the first lens L1 is reasonable, which is conducive to the miniaturization design of the optical lens 100.

[0071] In some embodiments, the optical lens 100 satisfies the relationship: 0.95≤CT2 / ET2≤1. Further, 0.96≤CT2 / ET2≤0.98. Specifically, CT2 / ET2 can be 0.95, 0.96, 0.965, 0.97, 0.985, 0.98, 0.99, 1, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of CT2 to ET2, the ratio of the center thickness to the edge thickness of the second lens L2 is reasonably controlled, so that the overall thickness of the second lens L2 is reasonable, which is conducive to the miniaturization design of the optical lens 100.

[0072] In some embodiments, the optical lens 100 satisfies the relationship: 1.1≤CT3 / ET3≤1.95. Wherein, 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 in the direction of the optical axis O. Further, 1.114≤CT3 / ET3≤1.926. Specifically, CT3 / ET3 can be 1.1, 1.114, 1.15, 1.2, 1.25, 1.3, 1.35, 1.4, 1.45, 1.5, 1.55, 1.6, 1.65, 1.7, 1.75, 1.8, 1.85, 1.9, 1.926, 1.95, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of CT3 to ET3 and reasonably controlling the ratio of the center thickness to the edge thickness of the third lens L3, the overall thickness of the third lens L3 is reasonable, which is conducive to realizing the miniaturized design of the optical lens 100.

[0073] In some embodiments, the optical lens 100 satisfies the relationship: 0.45≤CT5 / ET5≤0.91. 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 in the direction of the optical axis O. Further, 0.488≤CT5 / ET5≤0.905. Specifically, CT5 / ET5 can be 0.45, 0.488, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.905, 0.91, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of CT5 to ET5, the ratio of the center thickness to the edge thickness of the fifth lens L5 is reasonably controlled, so that the overall thickness of the fifth lens L5 is reasonable, which is convenient for gluing the fifth lens L5 with the fourth lens L4, and can also realize the miniaturization design of the optical lens 100.

[0074] In some embodiments, the optical lens 100 satisfies the relationship: 1≤CT6 / ET6≤1.4. 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 in the direction of the optical axis O. Further, 1.047≤CT6 / ET6≤1.385. Specifically, CT6 / ET6 can be 1, 1.047, 1.05, 1.1, 1.15, 1.2, 1.25, 1.3, 1.35, 1.385, 1.4, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of CT6 to ET6 and reasonably controlling the ratio of the center thickness to the edge thickness of the sixth lens L6, the overall thickness of the sixth lens L6 is reasonable, which is conducive to the miniaturization design of the optical lens 100.

[0075] The surface shape of each aspheric lens can be defined by, but not limited to, the following aspheric formula:

[0076]

[0077] Wherein, Z is the distance from the corresponding point on the aspherical surface to the plane tangent to the vertex of the surface, c is the curvature of the vertex of the aspherical surface, c=1 / Y, Y is the radius of curvature (i.e., the paraxial curvature c is the reciprocal of the Y radius in Table 1), r is the distance from any point on the aspherical surface to the optical axis O, k is the cone constant, and Ai is the coefficient corresponding to the i-th high-order term in the aspherical surface shape formula.

[0078] The optical lens 100 of this embodiment will be described in detail below with reference to specific parameters.

[0079] First embodiment

[0080] The structural schematic diagram of the optical lens 100 disclosed in the first embodiment of the present application is as follows Figure 1 As shown, the optical lens 100 includes a first lens L1, a second lens L2, an aperture 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, which are arranged in sequence from the object side to the image side along the optical axis O.

[0081] 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.

[0082] Furthermore, 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 convex 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 concave at the near optical axis O.

[0083] Specifically, 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 aperture STO in the "Thickness" parameter column is the distance from the aperture 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. The direction from the object side S1 of the first lens L1 to the image side S12 of the last lens is assumed to be the positive direction of the optical axis O. When the value is negative, it indicates that the aperture STO is set on the image side of the next surface vertex. If the thickness of the aperture STO is a positive value, the aperture STO is on the object side of the next surface vertex. It can be understood that the units of the Y radius, thickness and effective focal length in Table 1a are all mm. And the reference wavelength of the refractive index, Abbe number and effective focal length of each lens in Table 1a is 558nm.

[0084] In the first embodiment, the object-side surface and the image-side surface of the first lens L1 and the sixth lens L6 are both aspherical surfaces. Table 1b shows the cone constant k, and high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18 and A20 that can be used for each aspherical mirror surface in the first embodiment.

[0085] Table 1a

[0086]

[0087]

[0088] Table 1b

[0089]

[0090] See also Figure 2 In (A), Figure 2(A) in FIG. 1 shows the longitudinal spherical aberration diagram of the optical lens 100 in the first embodiment at wavelengths of 661 nm, 614 nm, 558 nm, 502 nm, and 435 nm, respectively. The horizontal axis along the X-axis direction represents the focus offset in mm, and the vertical axis along the Y-axis direction represents the normalized field of view. Figure 2 As can be seen from (A) in FIG. 1 , the spherical aberration value of the optical lens 100 in the first embodiment is better, indicating that the imaging quality of the optical lens 100 in this embodiment is better. Figure 2 In (B), Figure 2 (B) in the figure shows the astigmatism diagram of the optical lens 100 in the first embodiment at a wavelength of 558 nm. The horizontal axis along the X-axis direction represents the focus offset in mm, and the vertical axis along the Y-axis direction represents the field angle in degrees. T in the astigmatism diagram represents the curvature of the imaging surface IMG in the sub-arc direction, and S represents the curvature of the imaging surface IMG in the sagittal direction. Figure 2 As can be seen from (B) in FIG. 1 , at this wavelength, the astigmatism of the optical lens 100 is well compensated. Figure 2 (C) in Figure 2 (C) in FIG. 1 shows a distortion curve of the optical lens 100 in the first embodiment at a wavelength of 558 nm. The horizontal axis along the X-axis direction represents the distortion, and the vertical axis along the Y-axis direction represents the field of view angle, in degrees. Figure 2 As can be seen from (C) in FIG. 1 , at this wavelength, the distortion of the optical lens 100 is well corrected.

[0091] Second embodiment

[0092] The structural schematic diagram of the optical lens 100 disclosed in the second embodiment of the present application is as follows Figure 3 As shown, the optical lens 100 includes a first lens L1, a second lens L2, an aperture 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, which are arranged in sequence from the object side to the image side along the optical axis O.

[0093] 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.

[0094] Furthermore, 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 convex 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 concave at the near optical axis O.

[0095] The other parameters in the second embodiment are given in the following Table 2a, and the definitions of the parameters can be obtained from the description of the above-mentioned embodiment, and are not repeated here. It can be understood that the units of the Y radius, thickness and effective focal length in Table 2a are all mm. And the reference wavelength of the refractive index, Abbe number and effective focal length of each lens in Table 2a is 588nm.

[0096] In the second embodiment, the object-side surface and the image-side surface of the first lens L1 and the sixth lens L6 are both aspherical surfaces. Table 2b shows the cone constant k, and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 that can be used for each aspherical mirror surface in the second embodiment.

[0097] Table 2a

[0098]

[0099] Table 2b

[0100]

[0101]

[0102] See also Figure 4 ,Depend on Figure 4 It can be seen from the longitudinal spherical aberration diagram (A), astigmatism diagram (B) and distortion curve diagram (C) in the second embodiment that the longitudinal spherical aberration, astigmatism and distortion of the optical lens 100 are well controlled, so that the optical lens 100 of this embodiment has good imaging quality. Figure 4 (A) Figure 4 Middle (B) and Figure 4 The wavelengths corresponding to the curves in (C) can be referred to in the first embodiment. Figure 2 In (A), Figure 2 In (B), Figure 2The contents described in (C) will not be repeated here.

[0103] Third embodiment

[0104] The structural schematic diagram of the optical lens 100 disclosed in the third embodiment of the present application is as follows: Figure 5 As shown, the optical lens 100 includes a first lens L1, a second lens L2, an aperture 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, which are arranged in sequence from the object side to the image side along the optical axis O.

[0105] 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.

[0106] Furthermore, 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 convex 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 concave at the near optical axis O.

[0107] The other parameters in the third embodiment are given in the following Table 3a, and the definitions of the parameters can be obtained from the description of the above embodiments, and are not repeated here. It can be understood that the units of the Y radius, thickness and effective focal length in Table 3a are all mm. And the reference wavelength of the refractive index, Abbe number and effective focal length of each lens in Table 3a is 588nm.

[0108] In the third embodiment, the object-side surface and the image-side surface of the first lens L1 and the sixth lens L6 are both aspherical surfaces. Table 3b shows the cone constant k, and high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18 and A20 that can be used for each aspherical mirror surface in the third embodiment.

[0109] Table 3a

[0110]

[0111]

[0112] Table 3b

[0113]

[0114] See also Figure 6 ,Depend on Figure 6 It can be seen from the longitudinal spherical aberration diagram (A), astigmatism diagram (B) and distortion curve diagram (C) in the third embodiment that the longitudinal spherical aberration, astigmatism and distortion of the optical lens 100 are well controlled, so that the optical lens 100 of this embodiment has good imaging quality. Figure 6 (A) Figure 6 Middle (B) and Figure 6 The wavelengths corresponding to the curves in (C) can be referred to in the first embodiment. Figure 2 In (A), Figure 2 In (B), Figure 2 The contents described in (C) will not be repeated here.

[0115] Fourth embodiment

[0116] The structural schematic diagram of the optical lens 100 disclosed in the fourth embodiment of the present application is as follows: Figure 7 As shown, the optical lens 100 includes a first lens L1, a second lens L2, an aperture 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, which are arranged in sequence from the object side to the image side along the optical axis O.

[0117] 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.

[0118] Furthermore, 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 convex 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 concave at the near optical axis O.

[0119] The other parameters in the fourth embodiment are given in the following Table 4a, and the definitions of the parameters can be obtained from the description of the above embodiments, and are not repeated here. It can be understood that the units of the Y radius, thickness and effective focal length in Table 4a are all mm. And the reference wavelength of the refractive index, Abbe number and effective focal length of each lens in Table 4a is 588nm.

[0120] In the fourth embodiment, the object-side surface and the image-side surface of the first lens L1 and the sixth lens L6 are both aspherical surfaces. Table 4b shows the cone constant k, and high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18 and A20 that can be used for each aspherical mirror surface in the fourth embodiment.

[0121] Table 4a

[0122]

[0123]

[0124] Table 4b

[0125]

[0126] See also Figure 8 ,Depend on Figure 8 It can be seen from the longitudinal spherical aberration diagram (A), astigmatism diagram (B) and distortion curve diagram (C) in the fourth embodiment that the longitudinal spherical aberration, astigmatism and distortion of the optical lens 100 are well controlled, so that the optical lens 100 of this embodiment has good imaging quality. Figure 8 (A) Figure 8 Middle (B) and Figure 8 The wavelengths corresponding to the curves in (C) can be referred to in the first embodiment. Figure 2 In (A), Figure 2 In (B), Figure 2 The contents described in (C) will not be repeated here.

[0127] Fifth embodiment

[0128] The structural schematic diagram of the optical lens 100 disclosed in the fifth embodiment of the present application is as follows Fig. 9 As shown, the optical lens 100 includes a first lens L1, a second lens L2, an aperture 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, which are arranged in sequence from the object side to the image side along the optical axis O.

[0129] 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 negative refractive power.

[0130] Furthermore, 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 concave 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 convex 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 concave at the near optical axis O.

[0131] The other parameters in the fifth embodiment are given in the following Table 5a, and the definitions of the parameters can be obtained from the description of the above embodiments, and are not repeated here. It can be understood that the units of the Y radius, thickness and effective focal length in Table 5a are all mm. And the reference wavelength of the refractive index, Abbe number and effective focal length of each lens in Table 5a is 588nm.

[0132] In the fifth embodiment, the object-side surface and the image-side surface of the first lens L1 and the sixth lens L6 are both aspherical surfaces. Table 5b shows the cone constant k, and high-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.

[0133] Table 5a

[0134]

[0135] Table 5b

[0136]

[0137] See also Fig.10 ,Depend on Fig.10 It can be seen from the longitudinal spherical aberration diagram (A), astigmatism diagram (B) and distortion curve diagram (C) in the fifth embodiment that the longitudinal spherical aberration, astigmatism and distortion of the optical lens 100 are well controlled, so that the optical lens 100 of this embodiment has good imaging quality. Fig.10 (A) Fig.10 Middle (B) and Fig.10The wavelengths corresponding to the curves in (C) can be referred to in the first embodiment. Figure 2 In (A), Figure 2 In (B), Figure 2 The contents described in (C) will not be repeated here.

[0138] Sixth embodiment

[0139] The structural schematic diagram of the optical lens 100 disclosed in the sixth embodiment of the present application is as follows Fig.11 As shown, the optical lens 100 includes a first lens L1, a second lens L2, an aperture 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, which are arranged in sequence from the object side to the image side along the optical axis O.

[0140] 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.

[0141] 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 concave at the near optical axis O.

[0142] The other parameters in the sixth embodiment are given in the following Table 6a, and the definitions of the parameters can be obtained from the description of the above embodiments, and are not repeated here. It can be understood that the units of the Y radius, thickness and effective focal length in Table 6a are all mm. And the reference wavelength of the refractive index, Abbe number and effective focal length of each lens in Table 6a is 588nm.

[0143] In the sixth embodiment, the object-side surface and the image-side surface of the first lens L1 and the sixth lens L6 are both aspherical surfaces. Table 6b shows the cone constant k, and high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18 and A20 that can be used for each aspherical mirror surface in the sixth embodiment.

[0144] Table 6a

[0145]

[0146] Table 6b

[0147]

[0148]

[0149] See also Fig.12 ,Depend on Fig.12 It can be seen from the longitudinal spherical aberration diagram (A), astigmatism diagram (B) and distortion curve diagram (C) in the sixth embodiment that the longitudinal spherical aberration, astigmatism and distortion of the optical lens 100 are well controlled, so that the optical lens 100 of this embodiment has good imaging quality. Fig.12 (A) Fig.12 Middle (B) and Fig.12 The wavelengths corresponding to the curves in (C) can be referred to in the first embodiment. Figure 2 In (A), Figure 2 In (B), Figure 2 The contents described in (C) will not be repeated here.

[0150] Table 7 shows FOV, TTL / F, TTL / SD1, F / ImgH, F1 / F, F3 / F, F4 / F, F1 / CT1, SAGS2 / CT1, SD1 / ImgH, SD7 / SD6, CT4 / CT5, F5 / F4, R3 / (R4+CT2), |(Vd4-Vd5) / F45|, F45 / F, CT4 / ET4, |R5 / R6|, R11 / R12, CT6 / CT56, The values ​​of F*tan(FOV / 2) / ImgH, arctan(1 / K12), TTL / ImgH, TTL / ImgH / FOV, FNO, F2 / F, F5 / F, |F6 / F|, F2 / CT2, F3 / CT3, F4 / CT4, F5 / CT5, |F6 / CT6|, R1 / R2, R3 / R4, R7 / R8, |R9 / R10|, CT1 / ET1, CT2 / ET2, CT3 / ET3, CT5 / ET5 and CT6 / ET6.

[0151] Table 7

[0152]

[0153]

[0154] See also Fig.13The embodiment of the present application also discloses a camera module 200, which includes a photosensitive chip 201 and the above-mentioned optical lens 100, and the photosensitive chip 201 is arranged 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 to the photosensitive chip 201, and the photosensitive chip 201 is used to convert the light signal corresponding to the subject into an image signal, which will not be described in detail here. It can be understood that the camera module 200 with the above-mentioned optical lens 100 also has all the technical effects of the above-mentioned optical lens 100, that is, it can meet the requirements of large field of view, high resolution and miniaturization.

[0155] See also Fig.14 The embodiment of the present application further discloses a terminal device 300, which includes a housing 301 and the camera module 200, and the camera module 200 is disposed in the housing 300. The terminal device 300 may be, but is not limited to, a car, a mobile phone, a tablet computer, a laptop computer, a smart watch, a monitor, etc. It can be understood that the terminal device 300 having the camera module 200 also has all the technical effects of the optical lens 100, that is, it can meet the requirements of large field of view, high resolution and miniaturization.

[0156] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application and are not intended to limit it. Although the present application has been described in detail with reference to the preferred embodiments, a person of ordinary skill in the art should understand that the technical solution of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present application.

Claims

1. An optical lens, characterized in that: There are six lenses with refractive power, including: A first lens having negative refractive power, wherein 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 having negative refractive power, wherein 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 element has positive refractive power, and the object side surface of the third lens element is convex at the near optical axis; a fourth lens having positive refractive power, wherein 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 element having negative refractive power, wherein the object side surface of the fifth lens element is concave at the near optical axis; a sixth lens having refractive power, wherein 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 concave at the near optical axis; The optical lens satisfies the following relationship: 115°≤FOV≤130°, 4.8≤TTL / F≤5.5; Wherein, FOV is the maximum field of view of the optical lens, TTL is the distance from the object side 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.

2. The optical lens according to claim 1, wherein: The optical lens satisfies the following relationship: 6.5≤TTL / SD1≤7.2, and / or, 1.24≤F / ImgH≤1.4; Among them, SD1 is half of the maximum effective aperture of the object side of the first lens, and ImgH is half of the image height corresponding to the maximum field angle of the optical lens.

3. The optical lens according to claim 1, wherein: The optical lens satisfies the following relationship: -2.1≤F1 / F≤-1.7, and / or, 1.9≤F3 / F≤2.2, and / or, 1≤F4 / F≤1.4; Among them, F1 is the effective focal length of the first lens, F3 is the effective focal length of the third lens, and F4 is the effective focal length of the fourth lens.

4. The optical lens according to claim 1, wherein: The optical lens satisfies the following relationship: -11≤F1 / CT1≤-8, and / or, 1.3≤SAGS2 / CT1≤1.6, and / or, 0.95≤SD1 / ImgH≤1.05; Among them, F1 is the effective focal length of the first lens, CT1 is the thickness of the first lens on the optical axis, SAGS2 is the sagittal height of the edge of the optical effective diameter of the image side of the first lens, SD1 is half of the maximum effective aperture of the object side of the first lens, and ImgH is half of the image height corresponding to the maximum field of view angle of the optical lens.

5. The optical lens according to claim 1, wherein: The optical lens satisfies the following relationship: 0.8≤SD7 / SD6≤1.2, and / or, 0.5≤CT4 / CT5≤4.62, and / or, -2≤F5 / F4≤-1; Among them, SD6 is half of the maximum effective aperture of the image side of the third lens, SD7 is half of the maximum effective aperture of the object side of the fourth lens, CT4 is the thickness of the fourth lens on the optical axis, CT5 is the thickness of the fifth lens on the optical axis, F4 is the effective focal length of the fourth lens, and F5 is the effective focal length of the fifth lens.

6. The optical lens according to claim 1, wherein: The optical lens satisfies the following relationship: 0.95≤R3 / (R4+CT2)≤1.7, and / or, 1.6mm -1 ≤|(Vd4-Vd5) / F45|≤3.4mm -1 , and / or, 2.9≤F45 / F≤6.2; Wherein, R3 is the curvature radius of the object side of the second lens at the optical axis, R4 is the curvature radius of the image side of the second lens at the optical axis, CT2 is the thickness of the second lens on the optical axis, Vd4 is the Abbe number of the fourth lens, Vd5 is the Abbe number of the fifth lens, and F45 is the combined effective focal length of the fourth lens and the fifth lens.

7. The optical lens according to claim 1, wherein: The optical lens satisfies the following relationship: 1.4≤CT4 / ET4≤2.7, and / or, |R5 / R6|≤0.55, and / or, 0.3≤R11 / R12≤1.4; Among them, CT4 is the thickness of the fourth lens on the optical axis, ET4 is the distance from the maximum effective aperture of the object side of the fourth lens to the maximum effective aperture of the image side of the fourth lens in the direction of the optical axis, R5 is the curvature radius of the object side of the third lens at the optical axis, R6 is the curvature radius of the image side of the third lens at the optical axis, R11 is the curvature radius of the object side of the sixth lens at the optical axis, and R12 is the curvature radius of the image side of the sixth lens at the optical axis.

8. The optical lens according to claim 1, wherein: The optical lens satisfies the following relationship: 1.3≤CT6 / CT56≤33, and / or, 2.1≤F*tan(FOV / 2) / ImgH≤2.55, and / or, -63≤arctan(1 / K12)≤-57; Among them, CT6 is the thickness of the sixth lens on the optical axis, CT56 is the distance between the image side surface of the fifth lens and the object side surface of the sixth lens on the optical axis, ImgH is half of the image height corresponding to the maximum field of view angle of the optical lens, and K12 is the edge slope of the image side surface of the sixth lens corresponding to the maximum field of view angle of the optical 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 to 8, and the photosensitive chip is arranged on the image side of the optical lens.

10. A terminal device, characterized in that: It comprises a shell and a camera module as claimed in claim 9, wherein the camera module is arranged in the shell.

Images