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, a fifth lens element with negative refractive power and a sixth lens element with negative refractive power from an object side to an image side, the second lens element with negative refractive power has a concave object-side surface and a convex image-side surface in a paraxial region, respectively. The third lens element with positive refractive power has an object-side surface and an image-side surface being convex in a paraxial region. A fourth lens element with negative refractive power having a convex object-side surface and a concave image-side surface in paraxial regions, respectively; the fifth lens element with positive refractive power has an object-side surface and an image-side surface being convex in a paraxial region. A sixth lens element with negative refractive power having a convex object-side surface and a concave image-side surface in paraxial regions, respectively; the optical lens satisfies the relational expression: 78 degree tilt; a DFOVlt; the angle is 83 degrees, and the result is 1.5; fNOlt, FNOlt; and 1.75. The optical lens provided by the invention meets the requirements of high resolution and small distortion.

Description

Technical Field

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

[0002] With the continuous improvement of people's requirements for the imaging performance of terminal devices and the continuous progress of photosensitive chip technology, optical lenses are widely used in terminal devices such as mobile terminals, information terminals, surveillance cameras, and vehicle-mounted cameras. However, with the continuous progress of photosensitive chip technology, the pixel pitch of photosensitive chips is becoming increasingly fine. When the field of view of the optical lens is insufficient or the light transmission amount is insufficient, the full performance of high-pixel photosensitive chips cannot be exerted. Therefore, there is a need for an optical lens with high resolution and small distortion to support photosensitive chips with higher pixels. Summary of the Invention

[0003] In view of the above, it is necessary to provide an optical lens, a camera module, and a terminal device to meet the requirements of high resolution and small distortion.

[0004] To achieve the above object, in a first aspect, this application discloses an optical lens, which has six lenses with refractive power. Along the optical axis, from the object side to the image side, it successively includes: a first lens with negative refractive power, the object side surface of the first lens is convex near the optical axis, and the image side surface of the first lens is concave near the optical axis; a second lens with negative refractive power, the object side surface of the second lens is concave near the optical axis, and the image side surface of the second lens is convex near the optical axis; a third lens with positive refractive power, the object side surface of the third lens is convex near the optical axis, and the image side surface of the third lens is convex near the optical axis; a fourth lens with negative refractive power, the object side surface of the fourth lens is convex near the optical axis, and the image side surface of the fourth lens is concave near the optical axis; a fifth lens with positive refractive power, the object side surface of the fifth lens is convex near the optical axis, and the image side surface of the fifth lens is convex near the optical axis; a sixth lens with negative refractive power, the object side surface of the sixth lens is convex near the optical axis, and the image side surface of the sixth lens is concave near the optical axis; the optical lens satisfies the following relational expressions: 78° < DFOV < 83°, 1.5 < FNO < 1.75; where DFOV is the diagonal field of view angle of the optical lens, and FNO is the f-number of the optical lens.

[0005] In the optical lens provided by the present application, the first lens with negative refractive power is paired with an object side surface that is convex near the optical axis and an image side surface that is concave near the optical axis, which can effectively control the effective aperture of the first lens of the optical lens, enabling the optical lens to have a large optical incident angle, ensuring that the optical lens has sufficient light input, and being beneficial to improving the imaging quality of the optical lens; the second lens with negative refractive power is paired with an object side surface that is concave near the optical axis and an image side surface that is convex near the optical axis, which can effectively collect the light incident at a large angle projected by the first lens and make the light project smoothly, being beneficial to reducing the aberration of the optical lens and improving the resolution of the optical lens. The third lens with positive refractive power is paired with an object side surface that is convex near the optical axis and an image side surface that is convex near the optical axis. The third lens effectively converges the light smoothly projected by the second lens, being beneficial to reducing the eccentricity sensitivity of the optical lens and suppressing distortion; the fourth lens with negative refractive power can be preferably glued with the fifth lens with positive refractive power to form a glued lens, being beneficial to reducing the aberration of the optical lens, correcting chromatic aberration, and being beneficial to improving the resolution of the optical lens. The fourth lens with negative refractive power is paired with an object side surface that is convex near the optical axis and an image side surface that is concave near the optical axis, being beneficial to correcting the chromatic aberration of the optical lens and improving the resolution of the optical lens. The fifth lens with positive refractive power is paired with an object side surface that is convex near the optical axis and an image side surface that is convex near the optical axis, being beneficial to reducing the aberration of the optical lens and improving the resolution of the optical lens; the sixth lens with negative refractive power is paired with an object side surface that is convex near the optical axis and an image side surface that is concave near the optical axis. The light projected by the fifth lens converges on the object side surface of the sixth lens and then smoothly enters the imaging surface through the image side surface of the sixth lens, being beneficial to the optical lens adapting to a large-sized imaging surface.

[0006] When the optical lens satisfies 78° < DFOV < 83°, the optical lens has a large field of view angle, which is beneficial to the optical lens obtaining richer information of the object to be photographed and improving the imaging quality of the optical lens; when the optical lens satisfies 1.5 < FNO < 1.75, the optical lens has the characteristic of a large aperture, the optical lens has sufficient light input, and it can make the image taken by the optical lens clearer, so that it can be applicable to photographing object space scenes with low light brightness such as high-quality night scenes and starry skies. Therefore, the optical lens of the present application meets the requirements of high resolution and small distortion, thereby supporting a photosensitive chip with a higher pixel count.

[0007] In a second aspect, the present application discloses an imaging module, the imaging module includes a photosensitive chip and the optical lens as described in the first aspect above, and the photosensitive chip is disposed on the image side of the optical lens. The imaging module with the optical lens can meet the requirements of high resolution and small distortion.

[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 high resolution and small distortion. 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 schematic diagram of the structure of the optical lens disclosed in the seventh embodiment of the present application.

[0022] Fig.14 It is a longitudinal spherical aberration curve diagram, an astigmatism curve diagram and a distortion curve diagram of the optical lens disclosed in the seventh embodiment of the present application.

[0023] Fig.15 It is a structural schematic diagram of the camera module disclosed in this application.

[0024] Fig.16 It is a structural schematic diagram of the terminal device disclosed in this application. DETAILED DESCRIPTION

[0025] 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.

[0026] 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.

[0027] 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 negative refractive power, the fifth lens L5 has positive refractive power, and the sixth lens L6 has negative refractive power.

[0028] 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 concave at the near optical axis O; the object-side surface S9 of the fifth lens L5 is convex 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.

[0029] 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 which is convex at the near optical axis O and the image-side surface S2 which is concave 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 optical incident angle, ensuring that the optical lens 100 has a sufficient amount of light entering, which is beneficial to improving the imaging quality of the optical lens 100; the second lens L2 with negative refractive power, in combination with the object-side surface S3 which is concave at the near optical axis O and the image-side surface S4 which is convex at the near optical axis O, can effectively collect light incident at a large angle projected by the first lens L1, and project the light smoothly, which is beneficial to reducing the aberration of the optical lens 100 and improving the resolution of the optical lens 100. 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 image side surface S6 which is convex at the near optical axis O. The third lens L3 effectively converges the light smoothly projected by the second lens L2, which is beneficial to reduce the decentering sensitivity of the optical lens 100 and suppress distortion; the fourth lens L4 with negative refractive power can be well bonded with the fifth lens L5 with positive refractive power to form a bonded lens, which is beneficial to reduce the convergence difference of the optical lens 100, correct chromatic aberration, and improve the resolution of the optical lens 100. The fourth lens L4 with negative 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 concave at the near optical axis O, which is beneficial to correct The chromatic aberration of the optical lens 100 is improved, and the resolution of the optical lens 100 is improved. The fifth lens L5 with positive refractive power is matched with the object side surface S9 which is convex at the near optical axis O and the image side surface S10 which is convex at the near optical axis O, which is beneficial to reduce the aberration of the optical lens 100 and improve the resolution of the optical lens 100; the sixth lens L6 with negative 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. The light projected by the fifth lens L5 is converged by the object side surface S11 of the sixth lens L6 and then smoothly shot into the imaging surface IMG through the image side surface S12 of the sixth lens L6, which is beneficial for the optical lens 100 to adapt to the large-sized imaging surface IMG. Therefore, the optical lens 100 of the present application meets the requirements of high resolution and small distortion, thereby supporting photosensitive chips with higher pixels.

[0030] 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.

[0031] 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 first lens L1, the fourth lens L4 and the fifth lens L5 can be spherical lenses, and the second lens L2, the third lens L3 and the sixth lens L6 can be aspherical lenses. In this way, through the combination 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 and high resolution without too many lenses, and it is also 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.

[0032] In some embodiments, the optical lens 100 further includes a stop STO, which is disposed between the image side surface S4 of the second lens L2 and the object side surface S5 of the third lens L3. The stop STO 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 disposing 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 disposed between other lenses, and the setting may be adjusted according to actual conditions, and this embodiment does not specifically limit this.

[0033] In some embodiments, the optical lens 100 further includes a filter IR, and the filter IR is disposed between the image side surface S12 of 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.

[0034] 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.

[0035] In some embodiments, the optical lens 100 satisfies the relation: 78° < DFOV < 83°. Wherein, DFOV is the diagonal field of view of the optical lens 100. Further, 78.2° ≤ DFOV ≤ 82.8°. Specifically, DFOV can be 78.1°, 78.2°, 78.5°, 79°, 79.5°, 80°, 80.5°, 81°, 81.5°, 82°, 82.5°, 82.8°, 82.9°, etc. When the optical lens 100 satisfies the above relation, by reasonably configuring the range of DFOV, the optical lens 100 has a larger field of view angle, which is beneficial to enabling the optical lens 100 to obtain richer information of the object to be photographed and improving the imaging quality of the optical lens 100.

[0036] In some embodiments, the optical lens 100 satisfies the relation: 1.5 < FNO < 1.75. Wherein, FNO is the aperture number of the optical lens 100. Further, 1.53 ≤ FNO ≤ 1.72. Specifically, FNO can be 1.51, 1.52, 1.53, 1.54, 1.55, 1.58, 1.6, 1.62, 1.64, 1.66, 1.68, 1.69, 1.7, 1.71, 1.72, 1.73, 1.74, etc. When the optical lens 100 satisfies the above relation, by reasonably configuring the range of FNO, the optical lens 100 has the characteristic of a large aperture, and the optical lens 100 has sufficient light input, which can make the image taken by the optical lens 100 clearer, so that it can be applicable to object space scenes with low light brightness such as shooting high-quality night scenes and starry skies.

[0037] In some embodiments, the optical lens 100 satisfies the relationship: 60° < (HFOV / 2) / (SD1 / R1) < 83.5°. Wherein, HFOV is the horizontal field of view angle of the optical lens 100, SD1 is the maximum effective semi-aperture of the object side surface S1 of the first lens L1, and R1 is the curvature radius of the object side surface S1 of the first lens L1 at the optical axis O. Further, 65° ≤ (HFOV / 2) / (SD1 / R1) ≤ 82°. Specifically, (HFOV / 2) / (SD1 / R1) can be 60.1°, 60.3°, 60.5°, 60.8°, 61°, 62°, 63°, 64°, 65°, 66°, 67°, 68°, 69°, 70°, 71°, 72°, 73°, 74°, 75°, 76°, 77°, 78°, 79°, 80°, 81°, 82°, 82.2°, 82.4°, 82.6°, 82.8°, 83°, 83.1°, 83.2°, 83.3°, 83.4°, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of HFOV, SD1, and R1, the maximum effective aperture of the object side surface S1 of the first lens L1 is effectively controlled, which is beneficial to correcting the distortion generated by the first lens L1, beneficial to ensuring the aberration of the optical lens 100, and improving the resolution of the optical lens 100.

[0038] In some embodiments, the optical lens 100 satisfies the relationship: 1.2 < SD1 / ImgH < 1.36. Wherein, ImgH is half of the image height corresponding to the maximum field of view angle of the optical lens 100. Further, 1.209 ≤ SD1 / ImgH ≤ 1.352. Specifically, SD1 / ImgH can be 1.201, 1.203, 1.208, 1.209, 1.21, 1.23, 1.25, 1.27, 1.29, 1.3, 1.31, 1.33, 1.34, 1.35, 1.351, 1.352, 1.358, 1.359, 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.

[0039] In some embodiments, the optical lens 100 satisfies the relation: 1.32 < SD1 / SD12 < 1.48. Wherein, SD12 is the maximum effective semi-aperture of the image side S12 of the sixth lens L6. Further, 1.352 ≤ SD1 / SD12 ≤ 1.476. Specifically, SD1 / SD12 can be 1.321, 1.325, 1.328, 1.33, 1.335, 1.34, 1.345, 1.35, 1.352, 1.355, 1.36, 1.365, 1.37, 1.375, 1.38, 1.39, 1.4, 1.41, 1.42, 1.43, 1.44, 1.45, 1.46, 1.47, 1.472, 1.474, 1.476, 1.477, 1.479, etc. When the optical lens 100 satisfies the above relation, by reasonably configuring the ratio of SD1 to SD12, it is beneficial to reduce the volume of the optical lens 100 and enable the optical lens 100 to achieve a miniaturized design.

[0040] In some embodiments, the optical lens 100 satisfies the relation: 1.08 < |F1 / TTS| < 1.52. Wherein, F1 is the effective focal length of the first lens L1, and TTS is the distance from the object side S1 of the first lens L1 to the stop STO on the optical axis O. Further, -1.35 ≤ F1 / TTS ≤ -1.2. Specifically, |F1 / TTS| can be 1.081, 1.085, 1.09, 1.1, 1.15, 1.2, 1.25, 1.3, 1.35, 1.4, 1.45, 1.48, 1.49, 1.5, 1.511, 1.513, 1.515, 1.518, 1.519, etc. When the optical lens 100 satisfies the above relation, by reasonably configuring the ratio of F1 to TTS, it is beneficial to achieve a miniaturized design of the head of the optical lens 100.

[0041] In some embodiments, the optical lens 100 satisfies the relation: -3 < F1 / F < -2. Wherein, F is the effective focal length of the optical lens 100. Further, -2.614 ≤ F1 / F ≤ -2.370. Specifically, F1 / F can be -2.99, -2.95, -2.9, -2.8, -2.7, -2.614, -2.6, -2.5, -2.4, -2.370, -2.3, -2.2, -2.1, -2.05, -2.01, etc. When the optical lens 100 satisfies the above relation, by reasonably configuring the ratio of F1 to F, it is possible to avoid the first lens L1 introducing too much spherical aberration and effectively correct the aberration, improve the resolution ability of the optical lens 100, and at the same time, it is beneficial to shorten the length of the optical lens 100.

[0042] In some embodiments, the optical lens 100 satisfies the relation: 2 < SD2 / CT1 < 3.2. Wherein, SD2 is the maximum effective semi-aperture of the image side S2 of the first lens L1, and CT1 is the thickness of the first lens L1 on the optical axis O. Further, 2.02 ≤ SD2 / CT1 ≤ 3.106. Specifically, SD2 / CT1 can be 2.01, 2.02, 2.03, 2.05, 2.09, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3.0, 3.1, 3.106, 3.11, 3.13, 3.15, 3.16, 3.18, 3.19, etc. When the optical lens 100 satisfies the above relation, by reasonably configuring the ratio of SD2 to CT1, the curvature of the image side S2 of the first lens L1 is effectively controlled, the processing difficulty of the first lens L1 is reduced, and the problem of uneven coating caused by excessive curvature of the image side S2 of the first lens L1 is avoided, and the risk of ghosting generated by the first lens L1 is reduced.

[0043] In some embodiments, the optical lens 100 satisfies the relation: 0.61 < ST11 / STL < 0.93. Wherein, ST11 is the distance from the stop STO to the object side S11 of the sixth lens L6 on the optical axis O, and STL is the distance from the stop STO to the imaging surface IMG of the optical lens 100 on the optical axis O. Further, 0.72 ≤ ST11 / STL ≤ 0.75. Specifically, ST11 / STL can be 0.611, 0.62, 0.63, 0.65, 0.67, 0.69, 0.7, 0.72, 0.73, 0.75, 0.76, 0.78, 0.8, 0.81, 0.83, 0.85, 0.87, 0.89, 0.9, 0.91, 0.92, 0.922, 0.924, 0.926, 0.929, etc. When the optical lens 100 satisfies the above relation, by reasonably configuring the ratio of ST11 to STL, it is beneficial to correct the field curvature and distortion of the optical lens 100 and improve the imaging quality of the optical lens 100. When the ratio of ST11 to STL is above 0.93, the curvature of the image on the imaging surface IMG is large and the correction is difficult; when the ratio of ST11 to STL is below 0.61, the imaging quality of the optical lens 100 cannot be guaranteed.

[0044] In some embodiments, the optical lens 100 satisfies the relation: 0.425 < STL / TTL < 0.735. Herein, 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. Further, 0.55 ≤ STL / TTL ≤ 0.58. Specifically, STL / TTL can be 0.426, 0.428, 0.429, 0.43, 0.45, 0.48, 0.5, 0.52, 0.55, 0.56, 0.58, 0.6, 0.61, 0.65, 0.67, 0.69, 0.7, 0.71, 0.72, 0.73, 0.731, 0.733, 0.734, etc. When the optical lens 100 satisfies the above relation, by reasonably configuring the ratio of STL to TTL, the inclination angle of the chief ray of the optical lens 100 is within a reasonable range, improving the efficiency of the light receiving surface of the optical lens 100 for receiving light, which is beneficial to improving the imaging quality of the optical lens 100. When the ratio of STL to TTL is below 0.425, the inclination angle of the chief ray of the optical lens 100 becomes larger, resulting in a decrease in the efficiency of the light receiving surface of the optical lens 100 for receiving light, thereby affecting the imaging quality of the optical lens 100.

[0045] In some embodiments, the optical lens 100 satisfies the relation: 6.2 < TTL / CTMAX < 7. Herein, CTMAX is the maximum value of the thicknesses of the first lens L1 to the sixth lens L6 on the optical axis O. Further, 6.347 ≤ TTL / CTMAX ≤ 6.967. Specifically, TTL / CTMAX can be 6.21, 6.215, 6.22, 6.3, 6.347, 6.35, 6.4, 6.45, 6.5, 6.55, 6.6, 6.65, 6.7, 6.75, 6.8, 6.85, 6.9, 6.91, 6.93, 6.95, 6.967, 6.97, 6.99, etc. When the optical lens 100 satisfies the above relation, by reasonably configuring the ratio of TTL to CTMAX, the thicknesses of all the lenses of the optical lens 100 on the optical axis O can be reasonably configured, which is beneficial to the injection molding and assembly of each lens. At the same time, it is also beneficial to the convergence of effective light rays, improving aberration, compensating chromatic aberration, reducing the distortion of the optical lens 100, and effectively enabling the entire optical lens 100 to reduce its size while ensuring good imaging quality.

[0046] In some embodiments, the optical lens 100 satisfies the relation: 1.62 < |F12 / F3456| < 2.54. Herein, F12 is the combined effective focal length of the first lens L1 and the second lens L2, and F3456 is the combined effective focal length of the third lens L3, the fourth lens L4, the fifth lens L5, and the sixth lens L6. Further, 1.8 ≤ |F12 / F3456| ≤ 2.2. Specifically, |F12 / F3456| can be 1.63, 1.65, 1.68, 1.7, 1.75, 1.8, 1.85, 1.9, 1.95, 2, 2.05, 2.1, 2.15, 2.2, 2.25, 2.3, 2.35, 2.4, 2.45, 2.5, 2.51, 2.52, 2.53, 2.535, etc. When the optical lens 100 satisfies the above relation, by reasonably configuring the ratio of F12 to F3456, it is beneficial to achieve the miniaturized design of the head of the optical lens 100 and is also beneficial to compensating for the field curvature of the optical lens 100. When the ratio of F12 to F3456 is above 2.54, the aperture of the first lens L1 of the optical lens 100 becomes larger, which is not conducive to the miniaturized design of the head of the optical lens 100; when the ratio of F12 to F3456 is below 1.62, it is difficult to compensate for the field curvature of the optical lens 100.

[0047] In some embodiments, the optical lens 100 satisfies the relation: -25 < F2 / F < -12. Herein, F2 is the effective focal length of the second lens L2. Further, -22.958 ≤ F2 / F ≤ -14.137. Specifically, F2 / F can be -24.9, -24.5, -24, -23, -22.958, -22, -21, -20, -19, -18, -17, -16, -15, -14.137, -14, -13, -12.5, -12.3, -12.1, etc. When the optical lens 100 satisfies the above relation, 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 introducing excessive spherical aberration and can effectively correct the aberration, which is beneficial to improving the resolution of the optical lens 100.

[0048] In some embodiments, the optical lens 100 satisfies the relation: -6 < F6 / F < -4.7. Herein, F6 is the effective focal length of the sixth lens L6. Further, -5.803 ≤ F6 / F ≤ -4.846. Specifically, F6 / F can be -5.99, -5.97, -5.95, -5.803, -5.8, -5.7, -5.6, -5.5, -5.4, -5.3, -5.2, -5.1, -5, -4.9, -4.846, -4.8, -4.75, -4.73, -4.71, etc. When the optical lens 100 satisfies the above relation, 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, excessive spherical aberration introduced by the sixth lens L6 is avoided and the aberration can be effectively corrected, which is beneficial to improving the resolution of the optical lens 100.

[0049] In some embodiments, the optical lens 100 satisfies the relation: 14.5 mm < R8 / (N4 - N5) < 20.5 mm. Herein, R8 is the curvature radius of the image side surface S8 of the fourth lens L4 at the optical axis O, N4 is the refractive index of the fourth lens L4, and N5 is the refractive index of the fifth lens L5. Further, 16.2 mm ≤ R8 / (N4 - N5) ≤ 18.1 mm. Specifically, R8 / (N4 - N5) can be 14.6 mm, 14.8 mm, 15 mm, 15.5 mm, 16 mm, 16.2 mm, 16.5 mm, 17 mm, 17.5 mm, 18 mm, 18.1 mm, 18.5 mm, 19 mm, 19.5 mm, 20 mm, 20.1 mm, 20.2 mm, 20.3 mm, 20.4 mm, etc. When the optical lens 100 satisfies the above relation, by reasonably configuring the ratio of R8 to (N4 - N5), it is beneficial to improve the combination effect of the fourth lens L4 and the fifth lens L5 and is beneficial to correcting the chromatic aberration of the optical lens 100. When the ratio of R8 to (N4 - N5) is above 20.5, the combination effect of the fourth lens L4 and the fifth lens L5 weakens, which is not beneficial to correcting the chromatic aberration of the optical lens 100; when the ratio of R8 to (N4 - N5) is below 14.5, the spherical aberration of the optical lens 100 increases, which is not beneficial to correcting the chromatic aberration of the optical lens 100.

[0050] In some embodiments, the optical lens 100 satisfies the relation: 1.9 < CT5 / ET5 < 2.3. Here, CT5 is the thickness of the fifth lens L5 on the optical axis O, and ET5 is the distance in the direction of the optical axis O from the maximum effective aperture of the object side S9 of the fifth lens L5 to the maximum effective aperture of the image side S10 of the fifth lens L5. Further, 1.917 ≤ CT5 / ET5 ≤ 2.254. Specifically, CT5 / ET5 can be 1.91, 1.911, 1.917, 1.92, 1.94, 1.96, 1.98, 1.99, 2, 2.1, 2.15, 2.2, 2.25, 2.254, 2.26, 2.27, 2.28, 2.29, 2.299, etc. When the optical lens 100 satisfies the above relation, by reasonably configuring the ratio of CT5 to ET5 and reasonably controlling the ratio of the central thickness to the edge thickness of the fifth lens L5, the overall thickness of the fifth lens L5 is made reasonable, facilitating the gluing of the fifth lens L5 to the fourth lens L4 and enabling the miniaturized design of the optical lens 100 at the same time.

[0051] In some embodiments, the optical lens 100 satisfies the relation: 2.5 < F5 / CT5 < 3.5. Here, F5 is the effective focal length of the fifth lens L5. Further, 2.778 ≤ F5 / CT5 ≤ 3.483. Specifically, F5 / CT5 can be 2.51, 2.53, 2.55, 2.6, 2.65, 2.7, 2.75, 2.778, 2.8, 2.85, 2.9, 3, 3.05, 3.1, 3.15, 3.2, 3.25, 3.3, 3.35, 3.4, 3.45, 3.47, 3.483, 3.49, etc. When the optical lens 100 satisfies the above relation, 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 generated by the refracted light of each lens on the object side, which is beneficial to improving the resolution ability of the optical lens 100.

[0052] In some embodiments, the optical lens 100 satisfies the relational expression: 3.5 < R7 / R8 < 4.2. Wherein, R7 is the radius of curvature of the object side surface S7 of the fourth lens L4 at the optical axis O. Further, 3.605 ≤ R7 / R8 ≤ 4.172. Specifically, R7 / R8 can be 3.51, 3.53, 3.55, 3.6, 3.605, 3.65, 3.7, 3.75, 3.8, 3.85, 3.9, 3.95, 4, 4.05, 4.1, 4.15, 4.17, 4.172, 4.19, etc. When the optical lens 100 satisfies the above relational expression, by reasonably configuring the ratio of the radius of curvature 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 is beneficial to improving the resolution of the optical lens 100.

[0053] In some embodiments, the optical lens 100 satisfies the relational expression: 4.85 mm < F3 / N3 < 7.25 mm. Wherein, F3 is the effective focal length of the third lens L3, and N3 is the refractive index of the third lens L3. Further, 5.8 mm ≤ F3 / N3 ≤ 6 mm. Specifically, F3 / N3 can be 4.86 mm, 4.88 mm, 4.89 mm, 4.9 mm, 5 mm, 5.1 mm, 5.2 mm, 5.3 mm, 5.4 mm, 5.5 mm, 5.6 mm, 5.7 mm, 5.8 mm, 5.9 mm, 6 mm, 6.1 mm, 6.2 mm, 6.3 mm, 6.4 mm, 6.5 mm, 6.6 mm, 6.7 mm, 6.8 mm, 6.9 mm, 7 mm, 7.1 mm, 7.2 mm, 7.21 mm, 7.22 mm, 7.23 mm, 7.24 mm, etc. When the optical lens 100 satisfies the above relational expression, by reasonably configuring the ratio of F3 and N3, it is beneficial to reducing the spherical aberration of the optical lens 100, beneficial to correcting the chromatic aberration and spherical aberration of the optical lens 100, and taking into account the miniaturized design of the optical lens 100 at the same time. When the ratio of F3 and N3 is above 7.25, the size of the third lens L3 becomes larger, resulting in the increase of the size of the optical lens 100, which is not conducive to the miniaturized design of the optical lens 100; when the ratio of F3 and N3 is below 4.85, the spherical aberration of the optical lens 100 becomes larger, which is not conducive to correcting the chromatic aberration and spherical aberration of the optical lens 100.

[0054] In some embodiments, the optical lens 100 satisfies the relation: 1.55 < CT3 / ET3 < 1.82. Here, CT3 is the thickness of the third lens L3 on the optical axis O, and ET3 is the distance in the direction of the optical axis O 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. Further, 1.58 ≤ CT3 / ET3 ≤ 1.7. Specifically, CT3 / ET3 can be 1.56, 1.58, 1.59, 1.6, 1.61, 1.62, 1.63, 1.64, 1.66, 1.68, 1.7, 1.71, 1.73, 1.75, 1.77, 1.79, 1.8, 1.81, 1.815, 1.819, etc. When the optical lens 100 satisfies the above relation, by reasonably configuring the ratio of CT3 to ET3 and reasonably controlling the ratio of the central thickness to the edge thickness of the third lens L3, the overall thickness of the third lens L3 is made reasonable, which is conducive to realizing the miniaturized design of the optical lens 100.

[0055] In some embodiments, the optical lens 100 satisfies the relation: 3.5 < (CT2 + CT3) / CT23 < 7.8. Here, CT2 is the thickness of the second lens L2 on the optical axis O, and CT23 is the distance on the optical axis O between the image side surface S4 of the second lens L2 and the object side surface S5 of the third lens L3. Further, 3.595 ≤ (CT2 + CT3) / CT23 ≤ 7.766. Specifically, (CT2 + CT3) / CT23 can be 3.51, 3.53, 3.55, 3.59, 3.595, 3.6, 3.8, 4, 4.1, 4.3, 4.5, 4.7, 4.9, 5, 5.2, 5.6, 5.8, 6, 6.4, 6.8, 7, 7.1, 7.2, 7.3, 7.4, 7.5, 7.6, 7.7, 7.75, 7.766, 7.77, 7.79, etc. When the optical lens 100 satisfies the above relation, by reasonably configuring the ratio of (CT2 + CT3) to CT23 and effectively controlling the thicknesses of the second lens L2 and the third lens L3, it is conducive to realizing the miniaturized design of the optical lens 100.

[0056] In some embodiments, the optical lens 100 satisfies the relationship: 4.3 < TTL / F < 4.65. Further, 4.394 ≤ TTL / F ≤ 4.621. Specifically, TTL / F can be 4.31, 4.33, 4.35, 4.37, 4.39, 4.394, 4.4, 4.45, 4.5, 4.55, 4.6, 4.61, 4.62, 4.621, 4.63, 4.64, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of the total optical length TTL of the optical lens 100 to the effective focal length F of the optical lens 100, it is beneficial to make the light converge better on the imaging surface IMG, beneficial to improving the resolution of the optical lens 100, reducing the sensitivity of the optical lens 100, and at the same time beneficial to realizing the miniaturized design of the optical lens 100.

[0057] In some embodiments, the optical lens 100 satisfies the relationship: 1.35 < F / ImgH < 1.47. Further, 1.386 ≤ F / ImgH ≤ 1.468. Specifically, F / ImgH can be 1.351, 1.36, 1.38, 1.386, 1.39, 1.4, 1.41, 1.42, 1.43, 1.44, 1.45, 1.46, 1.465, 1.468, 1.469, 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.

[0058] In some embodiments, the optical lens 100 satisfies the relationship: 45° < DFOV / FNO < 54°. Further, 46.744° ≤ DFOV / FNO ≤ 52.549°. Specifically, DFOV / FNO can be 45.1°, 45.5°, 45.9°, 46°, 46.5°, 46.744°, 47°, 47.5°, 48°, 48.5°, 49°, 49.5°, 50°, 50.5°, 51°, 51.5°, 52°, 52.5°, 52.549°, 53°, 53.5°, 53.7°, 53.9°, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of DFOV to FNO, while taking into account the large field of view angle, reducing the aperture number of the optical lens 100, it is beneficial to realize the miniaturized design of the optical lens 100 and reduce the cost.

[0059] In some embodiments, the optical lens 100 satisfies the relation: VD5 - VD4 > 45. Here, VD5 is the Abbe number of the fifth lens L5, and VD4 is the Abbe number of the fourth lens L4. Further, 75 ≥ VD5 - VD4 ≥ 65. Specifically, VD5 - VD4 can be 45.1, 45.5, 46, 47, 49, 50, 52, 55, 58, 60, 62, 65, 66, 68, 70, 74, 75, 76, 79, 80, 82, 85, etc. When the optical lens 100 satisfies the above relation, by reasonably configuring the difference between VD5 and VD4, the chromatic aberration of the optical lens 100 can be effectively corrected, the authenticity of the chromatic aberration can be restored, and the resolution of the optical lens 100 can be improved.

[0060] In some embodiments, the optical lens 100 satisfies the relation: 1.3 < F3 / F < 1.5. Further, 1.368 ≤ F3 / F ≤ 1.444. Specifically, F3 / F can be 1.31, 1.32, 1.34, 1.36, 1.368, 1.38, 1.4, 1.42, 1.44, 1.444, 1.46, 1.48, 1.49, 1.491, 1.493, 1.495, 1.499, etc. When the optical lens 100 satisfies the above relation, 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 smoothly transitions to the fourth lens L4 through the third lens L3, reducing the generation of spherical aberration and coma, thereby improving the imaging quality of the optical lens 100.

[0061] In some embodiments, the optical lens 100 satisfies the relation: -1.9 < F4 / F < -1.6. Here, F4 is the effective focal length of the fourth lens L4. Further, -1.789 ≤ F4 / F ≤ -1.696. Specifically, F4 / F can be -1.899, -1.85, -1.8, -1.789, -1.75, -1.7, -1.696, -1.65, -1.64, -1.63, -1.62, -1.61, -1.609, -1.601, etc. When the optical lens 100 satisfies the above relation, 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, it is convenient to effectively correct the aberration after the fourth lens L4 and the fifth lens L5 are combined, further improving the resolution of the optical lens 100.

[0062] In some embodiments, the optical lens 100 satisfies the relation: 1.5 < F5 / F < 1.7. Further, 1.565 ≤ F5 / F ≤ 1.605. Specifically, F5 / F can be 1.51, 1.53, 1.565, 1.57, 1.59, 1.6, 1.605, 1.62, 1.64, 1.66, 1.68, 1.69, 1.695, 1.699, etc. When the optical lens 100 satisfies the above relation, 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, excessive spherical aberration introduced by the fifth lens L5 is avoided and the aberration can be effectively corrected, which is beneficial to improving the resolution of the optical lens 100.

[0063] In some embodiments, the optical lens 100 satisfies the relation: -15 < F1 / CT1 < -5. Further, -12.033 ≤ F1 / CT1 ≤ -7.659. Specifically, F1 / CT1 can be -14.999, -14.5, -14, -13.5, -13, -12.5, -12.033, -12, -11, -10, -9, -8, -7.659, -7, -6.5, -6, -5.5, -5.4, -5.3, -5.2, -5.1, -5.09, -5.01, -5.001, etc. When the optical lens 100 satisfies the above relation, by reasonably configuring the ratio of the effective focal length F1 of the first lens L1 to the thickness CT1 of the first lens L1, the incident light rays 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, enabling the optical lens 100 to obtain richer information of the object to be photographed, and improving the imaging quality of the optical lens 100.

[0064] In some embodiments, the optical lens 100 satisfies the relation: -32 < F2 / CT2 < -20. Further, -31.534 ≤ F2 / CT2 ≤ -21.326. Specifically, F2 / CT2 can be -31.999, -31.9, -31.534, -31.5, -31, -30, -29, -28, -27, -26, -25, -24, -23, -22, -21.326, -21, -20.5, -20.1, -20.001, etc. When the optical lens 100 satisfies the above relation, 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 inclination angle of the chief ray in the optical lens 100 is effectively controlled, so that the light rays are projected smoothly after passing through the second lens L2, thereby reducing the field curvature and astigmatism of the optical lens 100, which is beneficial to reducing the distortion of the optical lens 100.

[0065] In some embodiments, the optical lens 100 satisfies the relation: 2 < F3 / CT3 < 2.5. Further, 2.043 ≤ F3 / CT3 ≤ 2.469. Specifically, F3 / CT3 can be 2.001, 2.01, 2.043, 2.05, 2.1, 2.15, 2.2, 2.25, 2.3, 2.35, 2.4, 2.41, 2.43, 2.469, 2.47, 2.49, 2.499, etc. When the optical lens 100 satisfies the above relation, 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 rays gently projected by the second lens L2 are converged, thereby reducing the eccentricity sensitivity of the optical lens 100, which is beneficial to improving the resolution of the optical lens 100.

[0066] In some embodiments, the optical lens 100 satisfies the relation: -20 < F4 / CT4 < -5. Wherein, CT4 is the thickness of the fourth lens L4 on the optical axis O. Further, -17.052 ≤ F4 / CT4 ≤ -9.237. Specifically, F4 / CT4 can be -19.999, -19.5, -19, -18, -17.052, -17, -16, -15, -14, -13, -12, -11, -10, -9.237, -9, -8, -7.5, -7, -6.5, -6, -5.9, -5.7, -5.5, -5.3, -5.1, -5.01, -5.001, etc. When the optical lens 100 satisfies the above relation, 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 is beneficial to improving the resolution of the optical lens 100.

[0067] In some embodiments, the optical lens 100 satisfies the relation: -32 < F6 / CT6 < -24. Wherein, CT6 is the thickness of the sixth lens L6 on the optical axis O. Further, -30.210 ≤ F6 / CT6 ≤ -25.585. Specifically, F6 / CT6 can be -31.999, -31.5, -31, -30.5, -30.210, -30, -29.5, -29, -28.5, -28, -27.5, -27, -26.5, -26, -25.585, -25.5, -25, -24.5, -24.3, -24.1, -24.001, etc. When the optical lens 100 satisfies the above relation, 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 possible to avoid the occurrence of chromatic aberration and spherical aberration that are difficult to correct due to the excessive effective focal length of the sixth lens L6, which is beneficial to improving the resolution of the optical lens 100.

[0068] In some embodiments, the optical lens 100 satisfies the relational expression: 2.5 < R1 / R2 < 3. Wherein, R2 is the curvature radius of the image side surface S2 of the first lens L1 at the optical axis O. Further, 2.514 ≤ R1 / R2 ≤ 2.82. Specifically, R1 / R2 can be 2.501, 2.51, 2.514, 2.53, 2.57, 2.59, 2.6, 2.7, 2.8, 2.82, 2.85, 2.9, 2.91, 2.93, 2.95, 2.97, 2.99, 2.999, etc. When the optical lens 100 satisfies the above relational expression, 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, effectively controlling the effective aperture of the first lens L1 of the optical lens 100, which is conducive to achieving a large field of view of the optical lens 100.

[0069] In some embodiments, the optical lens 100 satisfies the relational expression: 0.65 < R3 / R4 < 0.75. Wherein, R3 is the curvature radius of the object side surface S3 of the second lens L2 at the optical axis O, and R4 is the curvature radius of the image side surface S4 of the second lens L2 at the optical axis O. Further, 0.69 ≤ R3 / R4 ≤ 0.708. Specifically, R3 / R4 can be 0.651, 0.66, 0.68, 0.69, 0.7, 0.708, 0.71, 0.72, 0.73, 0.74, 0.745, 0.749, etc. When the optical lens 100 satisfies the above relational expression, by reasonably configuring the ratio of the curvature radii 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 evenly configured, which is conducive to reducing the field curvature and astigmatism of the optical lens 100 and reducing distortion.

[0070] In some embodiments, the optical lens 100 satisfies the relational expression: -0.65 < R5 / R6 < -0.55. Wherein, R5 is the curvature radius of the object side surface S5 of the third lens L3 at the optical axis O, and R6 is the curvature radius of the image side surface S6 of the third lens L3 at the optical axis O. Further, -0.612 ≤ R5 / R6 ≤ -0.596. Specifically, R5 / R6 can be -0.649, -0.645, -0.64, -0.63, -0.62, -0.612, -0.61, -0.6, -0.596, -0.59, -0.58, -0.57, -0.56, -0.555, -0.551, etc. When the optical lens 100 satisfies the above relational expression, 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 conducive 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 is conducive to improving the resolution of the optical lens 100.

[0071] In some embodiments, the optical lens 100 satisfies the relational expression: -0.7 < R9 / R10 < -0.6. Wherein, R9 is the curvature radius of the object side surface S9 of the fifth lens L5 at the optical axis O, and R10 is the curvature radius of the image side surface S10 of the fifth lens L5 at the optical axis O. Further, -0.673 ≤ R9 / R10 ≤ -0.626. Specifically, R9 / R10 can be -0.699, -0.69, -0.68, -0.673, -0.67, -0.66, -0.65, -0.64, -0.63, -0.626, -0.62, -0.61, -0.609, -0.605, -0.601, etc. When the optical lens 100 satisfies the above relational expression, 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 being beneficial to improving the resolution ability of the optical lens 100.

[0072] In some embodiments, the optical lens 100 satisfies the relational expression: 2 < R11 / R12 < 3.5. Wherein, R11 is the curvature radius of the object side surface S11 of the sixth lens L6 at the optical axis O, and R12 is the curvature radius of the image side surface S12 of the sixth lens L6 at the optical axis O. Further, 2.14 ≤ R11 / R12 ≤ 3.308. Specifically, R11 / R12 can be 2.001, 2.01, 2.1, 2.14, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3, 3.1, 3.2, 3.3, 3.308, 3.4, 3.45, 3.49, 3.499, etc. When the optical lens 100 satisfies the above relational expression, 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 being beneficial to improving the resolution of the optical lens 100.

[0073] The surface profiles of the aspherical lenses can be defined by, but not limited to, the following aspherical formula:

[0074]

[0075] 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.

[0076] The optical lens 100 of this embodiment will be described in detail below with reference to specific parameters.

[0077] First embodiment

[0078] 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.

[0079] 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 negative refractive power, the fifth lens L5 has positive refractive power, and the sixth lens L6 has negative refractive power.

[0080] 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 concave at the near optical axis O; the object-side surface S9 of the fifth lens L5 is convex 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.

[0081] 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 546.0700nm.

[0082] In the first embodiment, the object-side surface and the image-side surface of the second lens L2, the third lens L3 and the sixth lens L6 are all 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.

[0083] Table 1a

[0084]

[0085]

[0086] Table 1b

[0087]

[0088] 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 656.2800 nm, 546.0700 nm, and 486.1300 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 546.0700 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 546.0700 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.

[0089] Second embodiment

[0090] 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.

[0091] 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 negative refractive power, the fifth lens L5 has positive refractive power, and the sixth lens L6 has negative refractive power.

[0092] 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 concave at the near optical axis O; the object-side surface S9 of the fifth lens L5 is convex 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.

[0093] 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 546.0700nm.

[0094] In the second embodiment, the object-side surface and the image-side surface of the second lens L2, the third lens L3 and the sixth lens L6 are all aspherical surfaces. Table 2b 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 second embodiment.

[0095] Table 2a

[0096]

[0097] Table 2b

[0098]

[0099]

[0100] 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 2 The contents described in (C) will not be repeated here.

[0101] Third embodiment

[0102] 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.

[0103] 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 negative refractive power, the fifth lens L5 has positive refractive power, and the sixth lens L6 has negative refractive power.

[0104] 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 concave at the near optical axis O; the object-side surface S9 of the fifth lens L5 is convex 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.

[0105] 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 546.0700nm.

[0106] In the third embodiment, the object-side surface and the image-side surface of the second lens L2, the third lens L3 and the sixth lens L6 are all 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.

[0107] Table 3a

[0108]

[0109]

[0110] Table 3b

[0111]

[0112] 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.

[0113] Fourth embodiment

[0114] 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.

[0115] 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 negative refractive power, the fifth lens L5 has positive refractive power, and the sixth lens L6 has negative refractive power.

[0116] 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 concave at the near optical axis O; the object-side surface S9 of the fifth lens L5 is convex 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.

[0117] 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 546.0700 nm.

[0118] In the fourth embodiment, the object-side surface and the image-side surface of the second lens L2, the third lens L3 and the sixth lens L6 are all 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.

[0119] Table 4a

[0120]

[0121] Table 4b

[0122]

[0123] 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.

[0124] Fifth embodiment

[0125] 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.

[0126] 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 negative refractive power, the fifth lens L5 has positive refractive power, and the sixth lens L6 has negative refractive power.

[0127] 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 concave at the near optical axis O; the object-side surface S9 of the fifth lens L5 is convex 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.

[0128] 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 546.0700 nm.

[0129] In the fifth embodiment, the object-side surface and the image-side surface of the second lens L2, the third lens L3 and the sixth lens L6 are all 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.

[0130] Table 5a

[0131]

[0132] Table 5b

[0133]

[0134]

[0135] 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.10 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.

[0136] Sixth embodiment

[0137] 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.

[0138] 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 negative refractive power, the fifth lens L5 has positive refractive power, and the sixth lens L6 has negative refractive power.

[0139] 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 concave at the near optical axis O; the object-side surface S9 of the fifth lens L5 is convex 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.

[0140] 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 546.0700 nm.

[0141] In the sixth embodiment, the object-side surface and the image-side surface of the second lens L2, the third lens L3 and the sixth lens L6 are all 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.

[0142] Table 6a

[0143]

[0144]

[0145] Table 6b

[0146]

[0147] 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.

[0148] Seventh embodiment

[0149] The structural schematic diagram of the optical lens 100 disclosed in the seventh embodiment of the present application is as follows Fig.13 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.

[0150] 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 negative refractive power, the fifth lens L5 has positive refractive power, and the sixth lens L6 has negative refractive power.

[0151] 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 concave at the near optical axis O; the object-side surface S9 of the fifth lens L5 is convex 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.

[0152] The other parameters in the seventh embodiment are given in the following Table 7a, 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 7a are all mm. And the reference wavelength of the refractive index, Abbe number and effective focal length of each lens in Table 7a is 546.0700 nm.

[0153] In the seventh embodiment, the object-side surface and the image-side surface of the second lens L2, the third lens L3 and the sixth lens L6 are all aspherical surfaces. Table 7b 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 seventh embodiment.

[0154] Table 7a

[0155]

[0156] Table 7b

[0157]

[0158] See also Fig.14 ,Depend on Fig.14 It can be seen from the longitudinal spherical aberration diagram (A), astigmatism diagram (B) and distortion curve diagram (C) in the seventh 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.14 (A) Fig.14 Middle (B) and Fig.14 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.

[0159] Table 8 shows DFOV, FNO, (HFOV / 2) / (SD1 / R1), SD1 / ImgH, SD1 / SD12, |F1 / TTS|, F1 / F, SD2 / CT1, ST11 / STL, STL / TTL, TTL / CTMAX, |F12 / F3456|, F2 / F, F6 / F, R8 / (N4-N5), CT5 / ET in the optical lens 100 of the first embodiment to the seventh embodiment. 5. F5 / CT5, R7 / R8, F3 / N3, CT3 / ET3, (CT2+CT3) / CT23, TTL / F, F / ImgH, DFOV / FNO, VD5-VD4, F3 / F, Values ​​of F4 / F, F5 / F, F1 / CT1, F2 / CT2, F3 / CT3, F4 / CT4, F6 / CT6, R1 / R2, R3 / R4, R5 / R6, R9 / R10 and R11 / R12.

[0160] Table 8

[0161]

[0162] See also Fig.15 The 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 small distortion.

[0163] See also Fig.16 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 arranged 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 small distortion.

[0164] 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 a total of six lenses with refractive power, which successively include, from the object side to the image side along the optical axis: The first lens, having negative refractive power, the object side surface of the first lens is convex near the optical axis, and the image side surface of the first lens is concave near the optical axis; The second lens, having negative refractive power, the object side surface of the second lens is concave near the optical axis, and the image side surface of the second lens is convex near the optical axis; The third lens, having positive refractive power, the object side surface of the third lens is convex near the optical axis, and the image side surface of the third lens is convex near the optical axis; The fourth lens, having negative refractive power, the object side surface of the fourth lens is convex near the optical axis, and the image side surface of the fourth lens is concave near the optical axis; The fifth lens, having positive refractive power, the object side surface of the fifth lens is convex near the optical axis, and the image side surface of the fifth lens is convex near the optical axis; The sixth lens, having negative refractive power, the object side surface of the sixth lens is convex near the optical axis, and the image side surface of the sixth lens is concave near the optical axis; The optical lens satisfies the following relational expressions: 78° < DFOV < 83°, 1.5 < FNO < 1.75; Wherein, DFOV is the diagonal field of view angle of the optical lens, and FNO is the f-number of the optical lens.

2. The optical lens according to claim 1, wherein: The optical lens satisfies the following relational expressions: 60° < (HFOV / 2) / (SD1 / R1) < 83.5°, and / or, 1.2 < SD1 / ImgH < 1.36, and / or, 1.32 < SD1 / SD12 < 1.48; Wherein, HFOV is the horizontal field of view angle of the optical lens, SD1 is the maximum effective semi-aperture of the object side surface of the first lens, R1 is the radius of curvature of the object side surface of the first lens at the optical axis, ImgH is half of the image height corresponding to the maximum field of view angle of the optical lens, and SD12 is the maximum effective semi-aperture of the image side surface of the sixth lens.

3. The optical lens according to claim 1, wherein: The optical lens further includes a diaphragm, the diaphragm is disposed between the image side surface of the second lens and the object side surface of the third lens, and the optical lens satisfies the following relational expressions: 1.08 < |F1 / TTS| < 1.52, and / or, -3 < F1 / F < -2, and / or, 2 < SD2 / CT1 < 3.2; Wherein, F1 is the effective focal length of the first lens, TTS is the distance from the object side surface of the first lens to the diaphragm on the optical axis, F is the effective focal length of the optical lens, SD2 is the maximum effective semi-aperture of the image side surface of the first lens, and CT1 is the thickness of the first lens on the optical axis.

4. The optical lens according to claim 1, wherein: The optical lens further includes a diaphragm, the diaphragm is disposed between the image side surface of the second lens and the object side surface of the third lens, and the optical lens satisfies the following relational expressions: 0.61 < ST11 / STL < 0.93, and / or, 0.425 < STL / TTL < 0.735, and / or, 6.2 < TTL / CTMAX < 7; Wherein, ST11 is the distance from the diaphragm to the object side of the sixth lens on the optical axis, STL is the distance from the diaphragm to the imaging surface of the optical lens on the optical axis, 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 CTMAX is the maximum value of the thicknesses of the first lens to the sixth lens on the optical axis.

5. The optical lens according to claim 1, wherein: The optical lens satisfies the following relationships: 1.62 < |F12 / F3456| < 2.54, and / or, -25 < F2 / F < -12, and / or, -6 < F6 / F < -4.7; Wherein, F12 is the combined effective focal length of the first lens and the second lens, F3456 is the combined effective focal length of the third lens, the fourth lens, the fifth lens, and the sixth lens, F2 is the effective focal length of the second lens, F is the effective focal length of the optical lens, and F6 is the effective focal length of the sixth lens.

6. The optical lens according to claim 1, wherein: The optical lens satisfies the following relationships: 14.5mm < R8 / (N4 - N5) < 20.5mm, and / or, 1.9 < CT5 / ET5 < 2.3, and / or, 2.5 < F5 / CT5 < 3.5, and / or, 3.5 < R7 / R8 < 4.2; Wherein, R8 is the radius of curvature of the image side of the fourth lens at the optical axis, N4 is the refractive index of the fourth lens, N5 is the refractive index of the fifth lens, CT5 is the thickness of the fifth lens on the optical axis, ET5 is the distance in the optical axis direction from the maximum effective aperture of the object side of the fifth lens to the maximum effective aperture of the image side of the fifth lens, F5 is the effective focal length of the fifth lens, and R7 is the radius of curvature of the object side of the fourth lens at the optical axis.

7. The optical lens according to claim 1, wherein: The optical lens satisfies the following relationships: 4.85mm < F3 / N3 < 7.25mm, and / or, 1.55 < CT3 / ET3 < 1.82, and / or, 3.5 < (CT2 + CT3) / CT23 < 7.8; Wherein, F3 is the effective focal length of the third lens, N3 is the refractive index of the third lens, CT3 is the thickness of the third lens on the optical axis, ET3 is the distance in the optical axis direction from the maximum effective aperture of the object side of the third lens to the maximum effective aperture of the image side of the third lens, CT2 is the thickness of the second lens on the optical axis, and CT23 is the distance on the optical axis between the image side of the second lens and the object side of the third lens.

8. The optical lens according to claim 1, wherein: The optical lens satisfies the following relationships: 4.3 < TTL / F < 4.65, and / or, 1.35 < F / ImgH < 1.47, and / or, 45° < DFOV / FNO < 54°; Wherein, TTL is the distance from the object side of the first lens to the imaging surface of the optical lens on the optical axis, F is the effective focal length of the optical lens, and ImgH is half of the image height corresponding to the maximum field of view angle of the optical lens.

9. A camera module, characterized in that: The imaging module includes an image sensor chip and the optical lens according to any one of claims 1 to 8, and the image sensor chip is disposed 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