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, a second lens element with negative refractive power having a concave image-side surface in a paraxial region; the third lens element with positive refractive power has an object-side surface and an image-side surface being convex in a paraxial region. The fourth lens element with positive refractive power has an object-side surface and an image-side surface being convex in a paraxial region. A fifth lens element with negative refractive power, the object-side and image-side surfaces thereof being concave in paraxial regions; the sixth lens element with positive refractive power has an object-side surface and an image-side surface being convex in a paraxial region. The optical lens satisfies the following relational expression: FOV is more than or equal to 160 degrees and less than or equal to 190 degrees; and 1.8 < = FNO < = 2.2. The optical lens provided by the invention meets the requirements of miniaturization, large aperture and wide visual field.

Description

Technical Field

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

[0002] With the rapid development of the automotive industry, users' demand for the performance of in-vehicle cameras is increasing day by day. With the continuous progress of semiconductor technology, core components such as image sensors are gradually developing towards miniaturization and high pixel counts, and the imaging devices equipped with these core components have also been miniaturized accordingly. At the same time, with the automotive industry's emphasis on safety performance, the front-view lens can effectively reduce the blind spot of the vehicle's field of view, thereby reducing the incidence of traffic accidents and improving driving safety. However, the commonly used in-vehicle rear-view imaging lenses currently usually adopt a structural design with 6 or more lenses, which not only has a high cost but also has significant limitations in terms of miniaturization. Therefore, there is an urgent need for an optical lens with miniaturization, a large aperture, and a wide field of view. 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 miniaturization, a large aperture, and a wide field of view.

[0004] To achieve the above object, in a first aspect, this application discloses an optical lens, which has a total of six lenses with refractive power, and sequentially includes, from the object side to the image side along the optical axis: a first lens with negative refractive power, the object side surface of the first lens is convex 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 image side surface of the second lens is concave 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 positive refractive power, the object side surface of the fourth lens is convex near the optical axis, and the image side surface of the fourth lens is convex near the optical axis; a fifth lens with negative refractive power, the object side surface of the fifth lens is concave near the optical axis, and the image side surface of the fifth lens is concave near the optical axis; a sixth lens with positive 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 convex near the optical axis; the optical lens satisfies the following relational expressions: 160° ≤ FOV ≤ 190°; 1.8 ≤ FNO ≤ 2.2; where FOV is the maximum 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 provided 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 is beneficial to expanding the light-gathering range of the optical lens. At the same time, it is also beneficial to the sliding of water droplets on the object side surface of the optical lens, thereby reducing the influence of bad weather such as rain and snow on the imaging quality of the optical lens; the second lens with negative refractive power is provided with an image side surface that is concave near the optical axis, which is beneficial to assisting the first lens in converging light and correcting the aberration generated by the first lens; the third lens with positive refractive power is provided with an object side surface that is convex near the optical axis and an image side surface that is convex near the optical axis, which is beneficial to converging the light projected by the second lens and making the light smoothly transition to the cemented lens formed by cementing the fourth lens and the fifth lens, which is beneficial to correcting the field curvature of the optical lens and improving the imaging optical quality of the optical lens; the fourth lens with positive refractive power can be preferably cemented with the fifth lens with negative refractive power to form a cemented lens. The combination of the fourth lens and the fifth lens with positive and negative lenses is beneficial to correcting the aberration of the optical lens and shortening the optical total length of the optical lens, which is beneficial to realizing miniaturized design; the sixth lens with positive refractive power is provided with an object side surface that is convex near the optical axis and an image side surface that is convex near the optical axis, which is beneficial to correcting the marginal field aberration of the optical lens and improving the imaging optical quality of the optical lens.

[0006] When the optical lens satisfies 160° ≤ FOV ≤ 190°, the optical lens has a large field of view angle and a wide field of view range, so as to obtain richer information of the object to be photographed, meeting good optical performance and high imaging optical quality; when the optical lens satisfies 1.8 ≤ FNO ≤ 2.2, the optical lens has the characteristic of a large aperture, and the optical lens has sufficient light input, which can make the image taken by the optical lens clearer, so that it can be applicable to shooting high-quality night scenes or shooting in a space scene with low light brightness. Therefore, the optical lens of the present application meets the requirements of miniaturization, large aperture, and wide field of view.

[0007] In a second aspect, the present application discloses an imaging module, which includes an image sensor chip and the optical lens as described in the first aspect above, and the image sensor chip is disposed on the image side of the optical lens. The imaging module with the optical lens can meet the requirements of miniaturization, large aperture, and wide field of view.

[0008] In a third aspect, the present application discloses a terminal device, which includes a housing and the imaging module as described in the second aspect above, and the imaging module is disposed in the housing. The terminal device with the imaging module can meet the requirements of miniaturization, large aperture, and wide field of view. Description of the Drawings

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

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

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

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

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

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

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

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

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

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

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

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

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

[0022] Figure 14 It is a schematic structural diagram of the terminal device disclosed in the present application. Detailed implementation manners

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] Please refer to Figure 1 , an optical lens 100 is disclosed in an embodiment of the present application. There are six lenses with refractive power in total. Along the optical axis O from the object side to the image side, they 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 in sequence. 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] 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.

[0026] Furthermore, the object side surface S1 of the first lens L1 is convex near the optical axis O, and the image side surface S2 of the first lens L1 is concave near the optical axis O; the image side surface S4 of the second lens L2 is concave near the optical axis O; the object side surface S5 of the third lens L3 is convex near the optical axis O, and the image side surface S6 of the third lens L3 is convex near the optical axis O; the object side surface S7 of the fourth lens L4 is convex near the optical axis O, and the image side surface S8 of the fourth lens L4 is convex near the optical axis O; the object side surface S9 of the fifth lens L5 is concave near the optical axis O, and the image side surface S10 of the fifth lens L5 is concave near the optical axis O; the object side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image side surface S12 of the sixth lens L6 is convex near the optical axis O.

[0027] In the optical lens 100 provided by the present application, the first lens L1 with negative refractive power is paired with an object side S1 that is convex near the optical axis O and an image side S2 that is concave near the optical axis O, which is beneficial to expanding the light-receiving range of the optical lens 100 and also beneficial to the sliding of water droplets on the object side S1 of the optical lens 100, thereby reducing the influence of bad weather such as rain and snow on the imaging quality of the optical lens 100; the second lens L2 with negative refractive power is paired with an image side S4 that is concave near the optical axis O, which is beneficial to assisting the first lens L1 in converging light and is beneficial to correcting the aberration generated by the first lens L1; the third lens L3 with positive refractive power is paired with an object side S5 that is convex near the optical axis O and an image side S6 that is convex near the optical axis O, which is beneficial to converging the light projected by the second lens L2 and making the light gently transition to the cemented lens formed by cementing the fourth lens L4 and the fifth lens L5, which is beneficial to correcting the field curvature of the optical lens 100 and simultaneously improving the imaging optical quality of the optical lens 100; the fourth lens L4 with positive refractive power can be preferably cemented with the fifth lens L5 with negative refractive power to form a cemented lens. The combination of the fourth lens L4 and the fifth lens L5 with positive and negative lenses is beneficial to correcting the aberration of the optical lens 100 and shortening the overall optical length of the optical lens 100, which is beneficial to realizing a miniaturized design; the sixth lens L6 with positive refractive power is paired with an object side S11 that is convex near the optical axis O and an image side S12 that is convex near the optical axis O, which is beneficial to correcting the marginal field aberration of the optical lens 100 and improving the imaging optical quality of the optical lens 100.

[0028] In some embodiments, when the optical lens 100 is applied to terminal devices such as vehicle-mounted devices and dash cams, 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 while the optical lens 100 has good optical effects, the influence of temperature on the above lenses can also be reduced. 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 the reduction of the influence of temperature on the lenses to achieve better imaging effects, the processing cost of the lenses and the weight of the lenses can also 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 selected as 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 facilitate the flexible design of the lens surface shape, thereby improving the imaging resolution of the optical lens 100. The aspherical lens can enable the object side or the image side of the lens to have a more flexible design, so that the lens can well solve the problems of unclear imaging, distorted field of view or narrow field of view under the conditions of small size and thin thickness, and the optical lens 100 can have good imaging quality without setting too many lenses, which is beneficial to shortening the length of the optical lens 100. Based on this, the above-mentioned first lens L1, second lens L2, third lens L3, fourth lens L4 and fifth lens L5 can adopt spherical lenses, and the sixth lens L6 can adopt aspherical lenses. In this way, through the combined design of spherical and aspherical lenses, not only can the processability of each lens be improved, which is beneficial to the surface shape design, but also the object side or the image side of the lens can have a more flexible design, so that each lens can well solve the problems of unclear imaging, distorted field of view or narrow field of view under the conditions of small size and thin thickness, and the optical lens 100 can have good imaging quality and high resolution without setting too many lenses, and at the same time, it is beneficial to shortening the length of the optical lens 100. It can be understood that in other embodiments, the surfaces of the lenses in the optical lens 100 can all be spherical, all aspherical or any combination of spherical and aspherical. Exemplarily, the first lens L1, third lens L3, fourth lens L4 and fifth lens L5 can adopt spherical lenses, and the second lens L2 and sixth lens L6 can adopt aspherical lenses, which can be specifically selected according to actual needs, so no specific limitation is made in this embodiment.

[0030] In some embodiments, the optical lens 100 further includes a stop STO, and the stop STO is disposed between the image side S6 of the third lens L3 and the object side S7 of the fourth lens L4. The stop STO can be an aperture stop and / or a field stop. For example, the stop STO can be an aperture stop, or the stop STO can be a field stop, or the stop STO can be an aperture stop and a field stop. By disposing the stop STO between the image side S6 of the third lens L3 and the object side S7 of the fourth lens L4, the first lens L1, second lens L2, third lens L3 and the fourth lens L4, fifth lens L5, sixth lens L6 can be symmetrically separated respectively, which is beneficial to effectively converging the light rays entering the optical lens 100, thereby reducing the overall optical length of the optical lens 100 and the front aperture of the optical lens 100. It can be understood that in other embodiments, the stop STO can also be disposed between other lenses and adjusted according to actual conditions, and no specific limitation is made in this embodiment.

[0031] In some embodiments, the optical lens 100 further includes an IR filter. The IR filter is disposed between the image side S12 of the sixth lens L6 and the imaging surface IMG of the optical lens 100. Optionally, the IR filter may be an infrared cut-off filter to filter out infrared light and pass visible light, making the imaging more in line with the visual experience of the human eye, thereby improving the imaging quality. In other embodiments, the IR filter may be an infrared band-pass filter to allow infrared light to pass through and reflect visible light to achieve infrared imaging of the optical lens 100, enabling the optical lens 100 to image in low-light environments or special application scenarios and obtain good imaging quality. It can be understood that the IR filter can be made of plastic, or 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 cover glass CG. The cover glass CG is disposed between the IR filter and the imaging surface IMG of the optical lens 100, thereby being able to protect the photosensitive chip and prevent dust. The cover glass CG can be made of plastic, or made of optical glass coating, or a cover glass CG of other materials, which can be selected according to actual needs and is not specifically limited in this embodiment. It can be understood that the cover glass CG can be a part of the optical lens 100 or can be removed from the optical lens 100. However, when the cover glass CG is removed, the overall optical length of the optical lens 100 remains unchanged.

[0033] In some embodiments, the optical lens 100 satisfies the relation: 160° ≤ FOV ≤ 190°. Wherein, FOV is the maximum field of view angle of the optical lens 100. Further, 164° ≤ FOV ≤ 188.8°. Specifically, FOV can be 160°, 161°, 163°, 164°, 165°, 168°, 169°, 170°, 174°, 178°, 179°, 180°, 182°, 184°, 186°, 187°, 188°, 188.8°, 189°, 190°, etc. When the optical lens 100 satisfies the above relation, by reasonably configuring the range of FOV, the optical lens 100 has a large field of view angle and a wide field of view range, thereby obtaining richer information of the object to be photographed and meeting good optical performance and high imaging optical quality.

[0034] In some embodiments, the optical lens 100 satisfies the relationship: 1.8 ≤ FNO ≤ 2.2. Here, FNO is the f-number of the optical lens 100. Further, 1.8 ≤ FNO ≤ 2.0, or 2.0 ≤ FNO ≤ 2.2. Specifically, FNO can be 1.8, 1.81, 1.82, 1.83, 1.85, 1.86, 1.88, 1.9, 1.92, 1.94, 1.96, 1.97, 1.99, 2, 2.02, 2.04, 2.06, 2.08, 2.1, 2.11, 2.13, 2.14, 2.16, 2.17, 2.18, 2.19, 2.2, etc. When the optical lens 100 satisfies the above relationship, 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 images captured by the optical lens 100 clearer, so that it can be applicable to shooting high-quality night scenes or shooting in space scenes with low light brightness.

[0035] In some embodiments, the optical lens 100 satisfies the relationship: 9 ≤ TTL / F ≤ 12. Here, 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, 9.2962 ≤ TTL / F ≤ 11.976. Specifically, TTL / F can be 9, 9.01, 9.03, 9.08, 9.1, 9.15, 9.2, 9.25, 9.2962, 9.3, 9.4, 9.5, 9.7, 9.9, 10, 10.05, 10.1, 10.3, 10.7, 10.9, 11, 11.1, 11.3, 11.5, 11.7, 11.8, 11.9, 11.976, 12, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the range of TTL / F, it is beneficial to make the light converge better on the imaging surface IMG of the optical lens 100, which is beneficial to improving the imaging optical quality of the optical lens 100, and at the same time is beneficial to realizing the miniaturized design of the optical lens 100.

[0036] In some embodiments, the optical lens 100 satisfies the relation: 5.9 ≤ TTL / IMGH ≤ 7.4. Wherein, IMGH is half of the image height corresponding to the maximum field of view angle of the optical lens 100. Further, 5.9284 ≤ TTL / IMGH ≤ 7.3329. Specifically, TTL / IMGH can be 5.9, 5.91, 5.92, 5.9284, 5.93, 5.95, 5.97, 5.99, 6, 6.1, 6.2, 6.3, 6.4, 6.5, 6.6, 6.7, 6.8, 6.9, 7, 7.1, 7.2, 7.3, 7.3329, 7.4, etc. When the optical lens 100 satisfies the above relation, by reasonably configuring the value of TTL / IMGH, the optical lens 100 can support a high-pixel photosensitive element.

[0037] In some embodiments, the optical lens 100 satisfies the relation: 0.5 ≤ F / IMGH ≤ 0.7. Further, 0.5405 ≤ F / IMGH ≤ 0.6570. Specifically, F / IMGH can be 0.5, 0.51, 0.52, 0.53, 0.54, 0.5405, 0.55, 0.56, 0.57, 0.58, 0.59, 0.6, 0.61, 0.62, 0.63, 0.64, 0.65, 0.6570, 0.66, 0.67, 0.68, 0.69, 0.7, etc. When the optical lens 100 satisfies the above relation, by reasonably configuring the value of F / IMGH, the optical lens 100 can meet the requirements of high pixels, which is beneficial to improving the imaging optical quality of the optical lens 100.

[0038] In some embodiments, the optical lens 100 satisfies the relation: 4.9 ≤ TTL / BFL ≤ 6.8. Wherein, BFL is the distance from the image side surface S12 of the sixth lens L6 to the imaging surface IMG of the optical lens 100 on the optical axis O. Further, 4.9846 ≤ TTL / BFL ≤ 6.7321. Specifically, TTL / BFL can be 4.9, 4.91, 4.93, 4.95, 4.98, 4.9846, 5, 5.1, 5.2, 5.3, 5.4, 5.5, 5.6, 5.7, 5.8, 5.9, 6, 6.1, 6.2, 6.3, 6.4, 6.5, 6.6, 6.7, 6.71, 6.73, 6.7321, 6.75, 6.77, 6.79, 6.8, etc. When the optical lens 100 satisfies the above relation, by reasonably configuring TTL / BFL, it is beneficial to control the incident angle of the chief ray of the optical lens 100, so that the optical lens 100 can better match the photosensitive chip.

[0039] In some embodiments, the optical lens 100 satisfies the relation: 3.8 ≤ TTL / CT3 ≤ 6. Herein, CT3 is the thickness of the third lens L3 on the optical axis O. Further, 3.8160 ≤ TTL / CT3 ≤ 5.9663. Specifically, TTL / CT3 can be 3.8, 3.81, 3.815, 3.8160, 3.82, 3.85, 3.88, 3.89, 3.9, 3.95, 4, 4.5, 5, 5.1, 5.2, 5.3, 5.4, 5.5, 5.6, 5.7, 5.8, 5.9, 5.95, 5.96, 5.9663, 5.97, 5.98, 5.99, 6, etc. When the optical lens 100 satisfies the above relation, by reasonably configuring the value of TTL / CT3, it is beneficial to shorten the overall optical length of the optical lens 100, make the structure of the optical lens 100 compact, enable the optical lens 100 to achieve a miniaturized design. At the same time, it is beneficial to correct the lateral chromatic aberration of the wide-band optical lens 100.

[0040] In some embodiments, the optical lens 100 satisfies the relation: 89° / mm ≤ FOV / F ≤ 99° / mm. Further, 89.950° / mm ≤ FOV / F ≤ 98.204° / mm. Specifically, FOV / F can be 89° / mm, 89.1° / mm, 89.3° / mm, 89.5° / mm, 89.8° / mm, 89.9° / mm, 89.950° / mm, 89.99° / mm, 90° / mm, 91° / mm, 92° / mm, 93° / mm, 94° / mm, 95° / mm, 96° / mm, 97° / mm, 98° / mm, 98.1° / mm, 98.2° / mm, 98.204° / mm, 98.3° / mm, 98.5° / mm, 98.7° / mm, 98.9° / mm, 99° / mm, etc. When the optical lens 100 satisfies the above relation, by reasonably configuring the ratio of FOV / F, it is beneficial to obtain a larger field of view angle. At the same time, it can also reduce the deflection angle of the outgoing light, reduce the tolerance sensitivity, weaken the vignetting at the edge of the optical lens 100, and ensure that the optical lens 100 can capture the details of the object to be photographed at a large angle, enabling the optical lens 100 to achieve a wide-angle design.

[0041] In some embodiments, the optical lens 100 satisfies the relation: 0.8 ≤ CT3 / ET3 ≤ 1.2. Wherein, ET3 is the distance in the optical axis O direction from the maximum effective aperture of the object side S5 of the third lens L3 to the maximum effective aperture of the image side S6 of the third lens L3. Further, 0.8625 ≤ CT3 / ET3 ≤ 1.1871. Specifically, CT3 / ET3 can be 0.8, 0.81, 0.82, 0.83, 0.84, 0.85, 0.86, 0.8625, 0.88, 0.89, 0.9, 0.92, 0.94, 0.96, 0.98, 0.99, 1, 1.02, 1.04, 1.06, 1.08, 1.1, 1.12, 1.14, 1.16, 1.18, 1.1871, 1.19, 1.2, etc. When the optical lens 100 satisfies the above relation, by reasonably configuring the ratio of CT3 / ET3 and reasonably controlling the ratio of the central thickness to the edge thickness of the third lens L3, it is beneficial to correct the field curvature of the optical lens 100, improve the imaging optical quality of the optical lens 100, and at the same time make the overall thickness of the third lens L3 reasonable, which is beneficial to realizing the miniaturized design of the optical lens 100.

[0042] In some embodiments, the optical lens 100 satisfies the relation: 1.18 ≤ CT4 / ET4 ≤ 1.75. Wherein, CT4 is the thickness of the fourth lens L4 on the optical axis O, and ET4 is the distance in the optical axis O direction from the maximum effective aperture of the object side S7 of the fourth lens L4 to the maximum effective aperture of the image side S8 of the fourth lens L4. Further, 1.1983 ≤ CT4 / ET4 ≤ 1.6209. Specifically, CT4 / ET4 can be 1.18, 1.19, 1.1983, 1.2, 1.22, 1.24, 1.26, 1.28, 1.3, 1.35, 1.4, 1.45, 1.5, 1.55, 1.6, 1.61, 1.62, 1.6209, 1.63, 1.65, 1.66, 1.67, 1.68, 1.7, 1.71, 1.72, 1.73, 1.74, 1.75, etc. When the optical lens 100 satisfies the above relation, by reasonably configuring the ratio of CT4 / ET4 and reasonably controlling the ratio of the central thickness to the edge thickness of the fourth lens L4, the optical path difference of the light rays in the central field of view and the peripheral field of view in the optical lens 100 can be effectively balanced, preventing the optical path difference between the central field of view and the peripheral field of view from being too large, and prompting the light rays in the central field of view and the peripheral field of view to converge near the same plane, thereby realizing the correction of the field curvature. At the same time, the overall thickness of the fourth lens L4 is reasonable, which is beneficial to realizing the miniaturized design of the optical lens 100.

[0043] In some embodiments, the optical lens 100 satisfies the relation: 1.47 ≤ CT6 / ET6 ≤ 1.81. Wherein, CT6 is the thickness of the sixth lens L6 on the optical axis O, and ET6 is the distance in the direction of the optical axis O 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. Further, 1.4844 ≤ CT6 / ET6 ≤ 1.8005. Specifically, CT6 / ET6 can be 1.47, 1.48, 1.4844, 1.5, 1.51, 1.53, 1.55, 1.57, 1.59, 1.6, 1.62, 1.64, 1.66, 1.68, 1.7, 1.72, 1.74, 1.76, 1.78, 1.79, 1.8, 1.8001, 1.8003, 1.8005, 1.8007, 1.8009, 1.81, etc. When the optical lens 100 satisfies the above relation, by reasonably configuring the ratio of CT6 / ET6, the ratio of the central thickness to the edge thickness of the sixth lens L6 can be reasonably configured, so that the sixth lens L6 can effectively balance the high-order aberrations generated by the optical lens 100. At the same time, it is also beneficial to the field curvature adjustment of the sixth lens L6 in engineering manufacturing, and further beneficial to improving the imaging optical quality of the optical lens 100. In addition, it is also beneficial to prevent the surface shape of the sixth lens L6 from being overly curved, thereby improving the forming and assembly yield of the sixth lens L6.

[0044] In some embodiments, the optical lens 100 satisfies the relation: -1.75 ≤ F1 / R2 ≤ -1.5. Wherein, F1 is the effective focal length of the first lens L1, and R2 is the curvature radius of the image side surface S2 of the first lens L1 at the optical axis O. Further, -1.7114 ≤ F1 / R2 ≤ -1.5827. Specifically, F1 / R2 can be -1.75, -1.74, -1.73, -1.72, -1.7114, -1.71, -1.7, -1.68, -1.66, -1.64, -1.62, -1.6, -1.59, -1.5827, -1.58, -1.56, -1.54, -1.52, -1.51, -1.5, etc. When the optical lens 100 satisfies the above relation, by reasonably configuring the ratio of F1 / R2, it is beneficial to reduce the head aperture of the optical lens 100, realize miniaturized design, facilitate the assembly of the optical lens 100, and ensure that the first lens L1 has sufficient refractive power, thereby being beneficial to suppressing high-order aberrations, improving the imaging optical quality of the optical lens 100, and reducing the processing difficulty of the first lens L1 to ensure that the first lens L1 is not prone to ghost images.

[0045] In some embodiments, the optical lens 100 satisfies the relational expression: -2.7 ≤ F2 / F ≤ -1.95. Wherein, F2 is the effective focal length of the second lens L2. Further, -2.6679 ≤ F2 / F ≤ -2.0461. Specifically, F2 / F can be -2.7, -2.6679, -2.6, -2.5, -2.4, -2.3, -2.2, -2.1, -2.0461, -2, -1.99, -1.98, -1.97, -1.96, -1.95, etc. When the optical lens 100 satisfies the above relational expression, by reasonably configuring the ratio of F2 / F, it is beneficial to control the light passing through the first lens L1 to enter the third lens L3 reasonably, which is beneficial to correcting the aberration generated by the first lens L1. At the same time, it is beneficial to the reasonable matching of the optical lens 100 with the photosensitive chip in the later stage.

[0046] In some embodiments, the optical lens 100 satisfies the relational expression: 2 ≤ |SAGS4 / SAGS3| ≤ 6. Wherein, SAGS3 is the distance from the intersection of the object side S3 of the second lens L2 and the optical axis O to the maximum effective aperture of the object side S3 of the second lens L2 on the optical axis O, and SAGS4 is the distance from the intersection of the image side S4 of the second lens L2 and the optical axis O to the maximum effective aperture of the image side S4 of the second lens L2 on the optical axis O. Further, 2.0488 ≤ |SAGS4 / SAGS3| ≤ 5.8000, or 2.0488 ≤ SAGS4 / SAGS3 ≤ 5.8000, or -5.8000 ≤ SAGS4 / SAGS3 ≤ -2.0488. Specifically, SAGS4 / SAGS3 can be -6, -5.8000, -5.5, -5, -4.5, -4, -3.5, -3, -2.5, -2.0488, -2, 2, 2.0488, 2.05, 2.1, 2.5, 2.8, 3, 3.5, 4, 4.5, 5, 5.5, 5.6, 5.7, 5.8000, 5.9, 6, etc. When the optical lens 100 satisfies the above relational expression, by reasonably configuring the ratio of |SAGS4 / SAGS3|, the marginal aberration of the optical lens 100 can be corrected, the generation of astigmatism can be suppressed, the shape of the second lens L2 can be controlled, and the surface of the second lens L2 can be prevented from being too curved, which is not conducive to the lens processing technology.

[0047] In some embodiments, the optical lens 100 satisfies the relational expression: 0.55 ≤ SD6 / SD7 ≤ 1.6. Wherein, 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, 0.5887 ≤ SD6 / SD7 ≤ 1.5923. Specifically, SD6 / SD7 can be 0.55, 0.56, 0.57, 0.58, 0.5887, 0.59, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 1, 1.05, 1.1, 1.15, 1.2, 1.25, 1.3, 1.35, 1.4, 1.45, 1.5, 1.55, 1.59, 1.5923, 1.595, 1.6, etc. When the optical lens 100 satisfies the above relational expression, by reasonably configuring the ratio of SD6 / SD7, since the aperture STO of the optical lens 100 of the present application is located between the third lens L3 and the fourth lens L4, therefore, by limiting the ratio of SD6 / SD7, the maximum effective semi-aperture difference between the two can be made small, reducing the aperture step difference between the two, so that light can be guided to transition from the third lens L3 to the fourth lens L4 better and more smoothly.

[0048] In some embodiments, the optical lens 100 satisfies the relational expression: 0.55 ≤ f123 / f456 ≤ 1.25. Wherein, f123 is the combined effective focal length of the first lens L1, the second lens L2 and the third lens L3, and f456 is the combined effective focal length of the fourth lens L4, the fifth lens L5 and the sixth lens L6. Further, 0.5555 ≤ f123 / f456 ≤ 1.2438. Specifically, f123 / f456 can be 0.55, 0.555, 0.5555, 0.56, 0.58, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, 1, 1.05, 1.1, 1.15, 1.2, 1.21, 1.22, 1.23, 1.24, 1.2438, 1.245, 1.247, 1.249, 1.25, etc. When the optical lens 100 satisfies the above relational expression, by reasonably configuring the ratio of f123 / f456, wherein, the first lens L1 and the structures of the first lens L1, the third lens L3, the fourth lens L4, the fifth lens L5 and the sixth lens L6 are symmetrically distributed, which is beneficial to the optical lens 100 to reasonably distribute the optical power, beneficial to improving the imaging optical quality of the optical lens 100. At the same time, by reasonably distributing the ratio of f123 / f456, the exit angle of the chief ray passing through the sixth lens L6 can also be reduced, which is beneficial to improving the relative brightness of the optical lens 100.

[0049] In some embodiments, the optical lens 100 satisfies the relation: 1.78 ≤ SD1 / IMGH ≤ 2.2, where SD1 is half of the maximum effective aperture of the object side surface S1 of the first lens L1. Further, 1.7961 ≤ SD1 / IMGH ≤ 2.1080. Specifically, SD1 / IMGH can be 1.78, 1.79, 1.7961, 1.8, 1.85, 1.9, 1.95, 1.96, 1.98, 1.99, 2, 2.01, 2.05, 2.09, 2.1, 2.1080, 2.11, 2.15, 2.17, 2.18, 2.19, 2.2, etc. When the optical lens 100 satisfies the above relation, by reasonably configuring the ratio of SD1 / IMGH, the optical lens 100 can meet the requirement of adapting to a large-size imaging surface IMG, while taking into account the miniaturized design of the head of the optical lens 100.

[0050] In some embodiments, the optical lens 100 satisfies the relation: -1.6 ≤ (R6 + CT3) / R5 ≤ -0.2. Wherein, R5 is the curvature radius of the object side surface S5 of the third lens L3 on the optical axis O, and R6 is the curvature radius of the image side surface S6 of the third lens L3 on the optical axis O. Further, -1.5295 ≤ (R6 + CT3) / R5 ≤ -0.2283. Specifically, (R6 + CT3) / R5 can be -1.6, -1.55, -1.5295, -1.5, -1.45, -1.4, -1.35, -1.3, -1.25, -1.2, -1.15, -1.1, -1.05, -1.0, -0.95, -0.9, -0.85, -0.8, -0.75, -0.7, -0.65, -0.6, -0.55, -0.5, -0.45, -0.4, -0.35, -0.3, -0.25, -0.2283, -0.22, -0.21, -0.2, etc. When the optical lens 100 satisfies the above relation, by reasonably configuring the ratio of (R6 + CT3) / R5, it is beneficial to control the processing shape of the third lens L3, ensure the overall miniaturization of the optical lens 100, and at the same time, it is beneficial to correct the field curvature of the optical lens 100 and improve the imaging optical quality.

[0051] In some embodiments, the optical lens 100 satisfies the relational expression: -3.5 ≤ R6 / ET3 ≤ -1.4. Further, -3.2810 ≤ R6 / ET3 ≤ -1.4614. Specifically, R6 / ET3 can be -3.5, -3.4, -3.3, -3.2810, -3.2, -3.1, -3, -2.9, -2.8, -2.7, -2.6, -2.5, -2.4, -2.3, -2.2, -2.1, -2, -1.9, -1.8, -1.7, -1.6, -1.5, -1.4614, -1.4, etc. When the optical lens 100 satisfies the above relational expression, by reasonably configuring the ratio of R6 / ET3, the large-angle light rays contracted by the second lens L2 converge at the third lens L3, avoiding excessive light deflection and resulting in an increase in marginal aberration, which is beneficial to suppressing and eliminating chromatic aberration and improving the resolution and imaging optical quality of the optical lens 100.

[0052] In some embodiments, the optical lens 100 satisfies the relational expression: 4.5 ≤ CT3 / CT2 ≤ 9. Wherein, CT2 is the thickness of the second lens L2 on the optical axis O. Further, 4.5910 ≤ CT3 / CT2 ≤ 8.6733. Specifically, CT3 / CT2 can be 4.5, 4.55, 4.59, 4.5910, 4.6, 4.8, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 8.6, 8.6733, 8.7, 8.8, 8.9, 9, etc. When the optical lens 100 satisfies the above relational expression, by reasonably configuring the ratio of CT3 / CT2, it is beneficial for the second lens L2 and the third lens L3 to cooperate with each other in shape, thereby effectively improving the relative brightness of the periphery of the optical lens 100 and simultaneously improving the yield rate during the assembly of the second lens L2 and the third lens L3.

[0053] In some embodiments, the optical lens 100 satisfies the relational expression: 74° ≤ FOV / FNO ≤ 100°. Further, 74.545° ≤ FOV / FNO ≤ 99.444°. Specifically, FOV / FNO can be 74°, 74.5°, 74.545°, 74.6°, 74.8°, 75°, 78°, 80°, 82°, 84°, 86°, 88°, 90°, 91°, 92°, 93°, 94°, 95°, 96°, 97°, 98°, 99°, 99.1°, 99.2°, 99.4°, 99.444°, 99.5°, 99.6°, 99.8°, 99.9°, 100°, etc. When the optical lens 100 satisfies the above relational expression, by reasonably configuring the ratio of FOV / FNO, while taking into account a large field of view angle, the aperture number of the optical lens 100 is reduced, which is beneficial to realizing the miniaturized design of the optical lens 100 and reducing costs.

[0054] In some embodiments, the optical lens 100 satisfies the relationship: 1.3 ≤ F4 / CT4 ≤ 2.1. Wherein, F4 is the effective focal length of the fourth lens L4. Further, 1.3281 ≤ F4 / CT4 ≤ 2.0669. Specifically, F4 / CT4 can be 1.3, 1.32, 1.3281, 1.34, 1.36, 1.38, 1.4, 1.45, 1.5, 1.52, 1.56, 1.58, 1.6, 1.63, 1.66, 1.69, 1.7, 1.74, 1.78, 1.8, 1.84, 1.88, 1.89, 1.9, 1.92, 1.94, 1.96, 1.98, 2, 2.05, 2.06, 2.0669, 2.07, 2.09, 2.1, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of F4 / CT4, it is beneficial to control the thickness of the fourth lens L4 within a reasonable range, thereby facilitating the compact structure of the optical lens 100, and further facilitating the miniaturized design of the optical lens 100; at the same time, the positive refractive power provided by the fourth lens L4 can be controlled within a reasonable range, improving the effect of suppressing chromatic aberration, so that the optical lens 100 can obtain high resolution performance, thereby ensuring the imaging quality of the optical lens 100.

[0055] In some embodiments, the optical lens 100 satisfies the relationship: -6 ≤ F5 / CT5 ≤ -2. Wherein, F5 is the effective focal length of the fifth lens L5, and CT5 is the thickness of the fifth lens L5 on the optical axis O. Further, -5.8486 ≤ F5 / CT5 ≤ -2.7514. Specifically, F5 / CT5 can be -6, -5.9, -5.8486, -5.8, -5.5, -5.3, -5.1, -5, -4.8, -4.6, -4.4, -4.2, -4, -3.8, -3.6, -3.4, -3.2, -3, -2.9, -2.7514, -2.7, -2.5, -2.3, -2.1, -2.05, -2, etc. When the optical lens 100 satisfies the above relationship, by reasonably configuring the ratio of F5 / CT5, the converging ability of the fifth lens L5 to incident light can be reasonably adjusted, which is beneficial to correcting the marginal aberration of the optical lens 100, reducing the chief ray angle of the marginal field of view, and further improving the photosensitive performance of the photosensitive element and the resolution ability of the optical lens 100.

[0056] In some embodiments, the optical lens 100 satisfies the relational expression: -3.5 ≤ F1 / F ≤ -2.6. Further, -3.498 ≤ F1 / F ≤ -2.644. Specifically, F1 / F can be -3.5, -3.498, -3.49, -3.47, -3.45, -3.43, -3.4, -3.25, -3.2, -3.15, -3.1, -3.05, -3, -2.95, -2.9, -2.85, -2.8, -2.75, -2.7, -2.65, -2.644, -2.64, -2.62, -2.61, -2.6, etc. When the optical lens 100 satisfies the above relational expression, by reasonably configuring the ratio of F1 / F, the light segregation can be effectively controlled, the sensitivity can be reduced. At the same time, the field curvature can be corrected, and the spherical aberration, astigmatism, etc. of the optical lens 100 can be reduced, thereby effectively improving the imaging quality of the optical lens 100. In addition, the overall optical length of the optical lens 100 can be controlled, which is beneficial to the miniaturization of the optical lens 100.

[0057] In some embodiments, the optical lens 100 satisfies the relational expression: 1.95 ≤ F3 / F ≤ 2.65. Wherein, F3 is the effective focal length of the third lens L3. Further, 1.977 ≤ F3 / F ≤ 2.604. Specifically, F3 / F can be 1.95, 1.97, 1.977, 1.99, 2, 2.1, 2.2, 2.3, 2.35, 2.4, 2.45, 2.5, 2.55, 2.6, 2.601, 2.604, 2.608, 2.61, 2.63, 2.65, etc. When the optical lens 100 satisfies the above relational expression, by reasonably configuring the ratio of F3 / F, 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 chromatic aberration, thereby improving the imaging quality of the optical lens 100.

[0058] In some embodiments, the optical lens 100 satisfies the relational expression: 1.5 ≤ F4 / F ≤ 2.3. Further, 1.503 ≤ F4 / F ≤ 2.243. Specifically, F4 / F can be 1.5, 1.501, 1.503, 1.505, 1.51, 1.53, 1.57, 1.59, 1.6, 1.65, 1.7, 1.75, 1.8, 1.85, 1.9, 1.95, 2, 2.05, 2.1, 2.15, 2.2, 2.22, 2.243, 2.25, 2.27, 2.29, 2.3, etc. When the optical lens 100 satisfies the above relational expression, by reasonably configuring the ratio of F4 / F, 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.

[0059] In some embodiments, the optical lens 100 satisfies the relational expression: -2 ≤ F5 / F ≤ -1. Further, -1.635 ≤ F5 / F ≤ -1.067. Specifically, F5 / F can be -2, -1.9, -1.8, -1.7, -1.635, -1.6, -1.5, -1.4, -1.3, -1.2, -1.1, -1.09, -1.08, -1.07, -1.067, -1.06, -1.04, -1.02, -1.01, -1, etc. When the optical lens 100 satisfies the above relational expression, by reasonably configuring the ratio of F5 / F, excessive spherical aberration introduced by the fifth lens L5 can be avoided and aberration can be effectively corrected, which is beneficial to improving the resolution of the optical lens 100. In addition, the overall optical length of the optical lens 100 can be controlled, which is conducive to miniaturizing the optical lens 100.

[0060] In some embodiments, the optical lens 100 satisfies the relational expression: 2 ≤ F6 / F ≤ 2.6. Wherein, F6 is the effective focal length of the sixth lens L6. Further, 2.025 ≤ F6 / F ≤ 2.515. Specifically, F6 / F can be 2, 2.01, 2.02, 2.025, 2.03, 2.05, 2.09, 2.1, 2.15, 2.2, 2.25, 2.3, 2.35, 2.4, 2.45, 2.5, 2.51, 2.515, 2.52, 2.54, 2.56, 2.58, 2.6, etc. When the optical lens 100 satisfies the above relational expression, by reasonably configuring the ratio of F6 / F, it is beneficial to reasonably distribute the overall refractive power of the optical lens 100, improve the imaging resolution of the optical lens 100, and achieve high-pixel imaging of the optical lens 100.

[0061] In some embodiments, the optical lens 100 satisfies the relational expression: 3.5 ≤ R1 / R2 ≤ 4.7. Wherein, R1 is the curvature radius of the object side surface S1 of the first lens L1 at the optical axis O. Further, 3.552 ≤ R1 / R2 ≤ 4.661. Specifically, R1 / R2 can be 3.5, 3.51, 3.52, 3.53, 3.55, 3.552, 3.56, 3.58, 3.6, 3.7, 3.8, 3.9, 4, 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 4.61, 4.63, 4.64, 4.65, 4.66, 4.661, 4.67, 4.68, 4.69, 4.7, etc. When the optical lens 100 satisfies the above relational expression, by reasonably configuring the ratio of R1 / R2, 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 beneficial to achieving a large field of view of the optical lens 100.

[0062] In some embodiments, the optical lens 100 satisfies the relational expression: -1.1 ≤ R5 / R6 ≤ -0.4. Further, -1.000 ≤ R5 / R6 ≤ -0.457. Specifically, R5 / R6 can be -1.1, -1.05, -1.000, -0.95, -0.9, -0.85, -0.8, -0.75, -0.7, -0.65, -0.6, -0.55, -0.5, -0.48, -0.46, -0.457, -0.45, -0.44, -0.43, -0.42, -0.41, -0.4, etc. When the optical lens 100 satisfies the above relational expression, by reasonably configuring the ratio of R5 / R6, 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 is beneficial to improving the resolution of the optical lens 100; at the same time, it is beneficial to reasonably constrain the surface shape of the third lens L3 and reduce the processing and forming difficulty.

[0063] In some embodiments, the optical lens 100 satisfies the relational expression: -3 ≤ R7 / R8 ≤ -1. Wherein, R7 is the curvature radius of the object side surface S7 of the fourth lens L4 at the optical axis O, and R8 is the curvature radius of the image side surface S8 of the fourth lens L4 at the optical axis O. Further, -2.973 ≤ R7 / R8 ≤ -1.199. Specifically, R7 / R8 can be -3, -2.98, -2.973, -2.97, -2.95, -2.93, -2.91, -2.9, -2.8, -2.7, -2.5, -2.3, -2.1, -2, -1.9, -1.8, -1.7, -1.6, -1.5, -1.4, -1.3, -1.2, -1.199, -1.19, -1.1, -1.05, -1.01, -1, etc. When the optical lens 100 satisfies the above relational expression, by reasonably configuring the ratio of R7 / R8, 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; at the same time, it is beneficial to reasonably constrain the surface shape of the fourth lens L4 and reduce the processing and forming difficulty.

[0064] In some embodiments, the optical lens 100 satisfies the relation: -0.45 ≤ R9 / R10 ≤ -0.22. Herein, 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, -0.424 ≤ R9 / R10 ≤ -0.248. Specifically, R9 / R10 can be -0.45, -0.44, -0.424, -0.42, -0.4, -0.38, -0.36, -0.34, -0.32, -0.3, -0.29, -0.28, -0.27, -0.26, -0.25, -0.248, -0.24, -0.23, -0.225, -0.221, -0.22, etc. When the optical lens 100 satisfies the above relation, by reasonably configuring the ratio of R9 / R10, 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 of the optical lens 100; meanwhile, it is beneficial to reasonably constrain the surface shape of the fifth lens L5 and reduce the processing and forming difficulty.

[0065] In some embodiments, the optical lens 100 satisfies the relation: -2.2 ≤ R11 / R12 ≤ -1. Herein, 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, -2.155 ≤ R11 / R12 ≤ -1.040. Specifically, R11 / R12 can be -2.2, -2.19, -2.17, -2.155, -2.15, -2.13, -2.1, -2, -1.9, -1.8, -1.7, -1.6, -1.5, -1.4, -1.3, -1.2, -1.1, -1.05, -1.040, -1.03, -1.02, -1.01, -1, etc. When the optical lens 100 satisfies the above relation, by reasonably configuring the ratio of R11 / R12, 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; meanwhile, it is beneficial to reasonably constrain the surface shape of the sixth lens L6 and reduce the processing and forming difficulty.

[0066] The surface shapes of the aspherical lenses can be defined by, but not limited to, the following aspherical formula:

[0067]

[0068] Wherein, Z is the distance from the corresponding point on the aspherical surface to the plane tangent to the surface vertex, c is the curvature of the aspherical vertex, 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 conic constant, and Ai is the coefficient corresponding to the i-th high-order term in the aspherical surface formula.

[0069] The optical lens 100 of this embodiment will be described in detail below in combination with specific parameters.

[0070] First Embodiment

[0071] The structural schematic diagram of the optical lens 100 disclosed in the first embodiment of this application is as Figure 1 shown. The optical lens 100 includes a first lens L1, a second lens L2, a third lens L3, a stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, an infrared filter IR, and a protective glass CG, which are sequentially arranged along the optical axis O from the object side to the image side.

[0072] Furthermore, the first lens L1 has a negative refractive power, the second lens L2 has a negative refractive power, the third lens L3 has a positive refractive power, the fourth lens L4 has a positive refractive power, the fifth lens L5 has a negative refractive power, and the sixth lens L6 has a positive refractive power.

[0073] Even further, the object side surface S1 of the first lens L1 is convex near the optical axis O, and the image side surface S2 of the first lens L1 is concave near the optical axis O; the object side surface S3 of the second lens L2 is concave near the optical axis O, and the image side surface S4 of the second lens L2 is concave near the optical axis O; the object side surface S5 of the third lens L3 is convex near the optical axis O, and the image side surface S6 of the third lens L3 is convex near the optical axis O; the object side surface S7 of the fourth lens L4 is convex near the optical axis O, and the image side surface S8 of the fourth lens L4 is convex near the optical axis O; the object side surface S9 of the fifth lens L5 is concave near the optical axis O, and the image side surface S10 of the fifth lens L5 is concave near the optical axis O; the object side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image side surface S12 of the sixth lens L6 is convex near the optical axis O.

[0074] Specifically, the Y radius in Table 1a is the curvature radius of the object side or image side corresponding to the 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 subsequent surface on the optical axis O. The value of the stop STO in the "thickness" parameter column is the distance from the stop STO to the vertex of the subsequent surface (the vertex refers to the intersection of the surface and the optical axis O) on the optical axis O. By default, the positive direction of the optical axis O is from the object side S1 of the first lens L1 to the image side S12 of the last lens. When this value is negative, it indicates that the stop STO is set on the image side of the vertex of the subsequent surface. If the thickness of the stop STO is positive, the stop STO is on the object side of the vertex of the subsequent surface. It can be understood that the units of the Y radius, thickness, and effective focal length in Table 1a are all mm. And the refractive index, Abbe number, and reference wavelength of the effective focal length of each lens in Table 1a are all 546.0000 nm.

[0075] In the first embodiment, both the object side S11 and the image side S12 of the sixth lens L6 are aspherical surfaces. Table 1b gives the conic constant k, and the high-order term coefficients A4, A6, A8, A10, A12, A14, and A16 that can be used for each aspherical mirror surface in the first embodiment.

[0076] Table 1a

[0077]

[0078] Table 1b

[0079]

[0080] Please refer to Figure 2 in (A) Figure 2 in (A) shows the longitudinal spherical aberration diagrams of the optical lens 100 in the first embodiment at wavelengths of 656.2700 nm, 587.5600 nm, 546.0000 nm, 487.0000 nm, 435.0000 nm, and 410.0000 nm respectively. Among them, the abscissa along the X-axis direction represents the focal shift, with the unit of mm, and the ordinate along the Y-axis direction represents the normalized field of view. It can be seen from Figure 2 in (A) that the spherical aberration value of the optical lens 100 in the first embodiment is relatively good, indicating that the imaging quality of the optical lens 100 in this embodiment is relatively good. Please refer to Figure 2 in (B) Figure 2(B) in shows the astigmatism diagram of the optical lens 100 in the first embodiment at a wavelength of 546.0000 nm. Among them, the abscissa along the X-axis direction represents the focus shift, with the unit of mm, and the ordinate along the Y-axis direction represents the field angle, with the unit of deg. 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. From Figure 2 (B) in it can be seen that at this wavelength, the astigmatism of the optical lens 100 is well compensated. Please refer to Figure 2 (C) in Figure 2 (C) in shows the distortion curve diagram of the optical lens 100 in the first embodiment at a wavelength of 546.0000 nm. Among them, the abscissa along the X-axis direction represents the distortion, and the ordinate along the Y-axis direction represents the field angle, with the unit of deg. From Figure 2 (C) in it can be seen that at this wavelength, the distortion of the optical lens 100 is well corrected.

[0081] Second Embodiment

[0082] The structural schematic diagram of the optical lens 100 disclosed in the second embodiment of the present application is as shown in Figure 3 , and the optical lens 100 includes a first lens L1, a second lens L2, a third lens L3, a diaphragm STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a filter IR, and a protective glass CG, which are sequentially arranged from the object side to the image side along the optical axis O.

[0083] Furthermore, the first lens L1 has a negative refractive power, the second lens L2 has a negative refractive power, the third lens L3 has a positive refractive power, the fourth lens L4 has a positive refractive power, the fifth lens L5 has a negative refractive power, and the sixth lens L6 has a positive refractive power.

[0084] Furthermore still, the object side surface S1 of the first lens L1 is convex near the optical axis O, and the image side surface S2 of the first lens L1 is concave near the optical axis O; the object side surface S3 of the second lens L2 is concave near the optical axis O, and the image side surface S4 of the second lens L2 is concave near the optical axis O; the object side surface S5 of the third lens L3 is convex near the optical axis O, and the image side surface S6 of the third lens L3 is convex near the optical axis O; the object side surface S7 of the fourth lens L4 is convex near the optical axis O, and the image side surface S8 of the fourth lens L4 is convex near the optical axis O; the object side surface S9 of the fifth lens L5 is concave near the optical axis O, and the image side surface S10 of the fifth lens L5 is concave near the optical axis O; the object side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image side surface S12 of the sixth lens L6 is convex near the optical axis O.

[0085] The other parameters in the second embodiment are given in Table 2a below, and the definitions of the parameters can be obtained from the descriptions of the foregoing embodiments, and will not be elaborated here. It can be understood that the units of the Y radius, thickness, and effective focal length in Table 2a are all mm. The refractive index, Abbe number, and reference wavelength of the effective focal length of each lens in Table 2a are all 546.0000 nm.

[0086] In the second embodiment, the object side surface S11 and the image side surface S12 of the sixth lens L6 are both aspherical surfaces, and Table 2b gives the conic constant k, and the higher-order term coefficients A4, A6, A8, A10, A12, A14, and A16 that can be used for each aspherical mirror surface in the second embodiment.

[0087] Table 2a

[0088]

[0089] Table 2b

[0090]

[0091]

[0092] Please refer to Figure 4 , from Figure 4 in the (A) longitudinal spherical aberration diagram, (B) astigmatism diagram, and (C) distortion curve diagram, it can be seen that in the second embodiment, the longitudinal spherical aberration, astigmatism, and distortion of the optical lens 100 are all well controlled, so that the optical lens 100 in this embodiment has good imaging quality. In addition, regarding Figure 4 in (A), Figure 4 in (B), and Figure 4 in (C), the wavelengths corresponding to the curves can refer to the content described in (A) in the first embodiment regarding Figure 2 in (A), Figure 2 in (B), Figure 2 in (C), which will not be elaborated here.

[0093] Third Embodiment

[0094] The structural schematic diagram of the optical lens 100 disclosed in the third embodiment of the present application is as shown in Figure 5 , and the optical lens 100 includes a first lens L1, a second lens L2, a third lens L3, a stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a filter IR, and a protective glass CG that are sequentially arranged along the optical axis O from the object side to the image side.

[0095] Further, the first lens L1 has a negative refractive power, the second lens L2 has a negative refractive power, the third lens L3 has a positive refractive power, the fourth lens L4 has a positive refractive power, the fifth lens L5 has a negative refractive power, and the sixth lens L6 has a positive refractive power.

[0096] Furthermore, the object side surface S1 of the first lens L1 is convex near the optical axis O, and the image side surface S2 of the first lens L1 is concave near the optical axis O; the object side surface S3 of the second lens L2 is concave near the optical axis O, and the image side surface S4 of the second lens L2 is concave near the optical axis O; the object side surface S5 of the third lens L3 is convex near the optical axis O, and the image side surface S6 of the third lens L3 is convex near the optical axis O; the object side surface S7 of the fourth lens L4 is convex near the optical axis O, and the image side surface S8 of the fourth lens L4 is convex near the optical axis O; the object side surface S9 of the fifth lens L5 is concave near the optical axis O, and the image side surface S10 of the fifth lens L5 is concave near the optical axis O; the object side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image side surface S12 of the sixth lens L6 is convex near the optical axis O.

[0097] The other parameters in the third embodiment are given in Table 3a below, and the definitions of the parameters can be obtained from the descriptions of the foregoing embodiments and will not be elaborated here. It can be understood that the units of the Y radius, thickness, and effective focal length in Table 3a are all mm. Also, the refractive index, Abbe number, and reference wavelength of the effective focal length of each lens in Table 3a are all 546.0000 nm.

[0098] In the third embodiment, both the object side surface S11 and the image side surface S12 of the sixth lens L6 are aspherical surfaces, and Table 3b gives the conic constants k, and the higher-order term coefficients A4, A6, A8, A10, A12, A14, and A16 of the aspherical mirror surfaces that can be used in the third embodiment.

[0099] Table 3a

[0100]

[0101] Table 3b

[0102]

[0103] Please refer to Figure 6 , from Figure 6 in the (A) longitudinal spherical aberration diagram, (B) astigmatism diagram, and (C) distortion curve diagram, it can be seen that in the third embodiment, the longitudinal spherical aberration, astigmatism, and distortion of the optical lens 100 are all well controlled, so that the optical lens 100 in this embodiment has good imaging quality. In addition, regarding Figure 6 in (A), Figure 6 in (B), and Figure 6The wavelengths corresponding to the curves in (C) can be referred to those described in the first embodiment regarding Figure 2 (A) in Figure 2 (B) in Figure 2 (C) in, which will not be elaborated here.

[0104] Fourth Embodiment

[0105] The structural schematic diagram of the optical lens 100 disclosed in the fourth embodiment of the present application is as shown in Figure 7 Figure. The optical lens 100 includes a first lens L1, a second lens L2, a third lens L3, a stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, an IR filter, and a protective glass CG, which are sequentially arranged from the object side to the image side along the optical axis O.

[0106] Furthermore, the first lens L1 has a negative refractive power, the second lens L2 has a negative refractive power, the third lens L3 has a positive refractive power, the fourth lens L4 has a positive refractive power, the fifth lens L5 has a negative refractive power, and the sixth lens L6 has a positive refractive power.

[0107] Moreover, the object side surface S1 of the first lens L1 is convex near the optical axis O, and the image side surface S2 of the first lens L1 is concave near the optical axis O; the object side surface S3 of the second lens L2 is convex near the optical axis O, and the image side surface S4 of the second lens L2 is concave near the optical axis O; the object side surface S5 of the third lens L3 is convex near the optical axis O, and the image side surface S6 of the third lens L3 is convex near the optical axis O; the object side surface S7 of the fourth lens L4 is convex near the optical axis O, and the image side surface S8 of the fourth lens L4 is convex near the optical axis O; the object side surface S9 of the fifth lens L5 is concave near the optical axis O, and the image side surface S10 of the fifth lens L5 is concave near the optical axis O; the object side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image side surface S12 of the sixth lens L6 is convex near the optical axis O.

[0108] Other parameters in the fourth embodiment are given in Table 4a below, and the definitions of the parameters can be obtained from the descriptions of the foregoing embodiments, which will not be elaborated 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 refractive index, Abbe number, and reference wavelength of the effective focal length of each lens in Table 4a are all 546.0000 nm.

[0109] In the fourth embodiment, the object side surface S3 and the image side surface S4 of the second lens L2 and the object side surface S11 and the image side surface S12 of the sixth lens L6 are all aspherical surfaces. Table 4b gives the conic constants k, and the higher-order term coefficients A4, A6, A8, A10, A12, A14, and A16 that can be used for each aspherical mirror surface in the fourth embodiment.

[0110] Table 4a

[0111]

[0112]

[0113] Table 4b

[0114]

[0115] Please refer to Figure 8 and it can be seen from the (A) longitudinal spherical aberration diagram, (B) astigmatism diagram, and (C) distortion curve diagram in Figure 8 that the longitudinal spherical aberration, astigmatism, and distortion of the optical lens 100 in the fourth embodiment are all well controlled, so that the optical lens 100 in this embodiment has good imaging quality. In addition, regarding the wavelengths corresponding to the curves in (A) in Figure 8 , (B) in Figure 8 , and (C) in Figure 8 , reference can be made to the content described in (A) in the first embodiment regarding Figure 2 , (B) in Figure 2 , and (C) in Figure 2 , which will not be elaborated here.

[0116] Fifth Embodiment

[0117] The structural schematic diagram of the optical lens 100 disclosed in the fifth embodiment of the present application is as shown in Figure 9 . The optical lens 100 includes a first lens L1, a second lens L2, a third lens L3, a stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, an infrared filter IR, and a protective glass CG, which are sequentially arranged from the object side to the image side along the optical axis O.

[0118] Furthermore, the first lens L1 has a negative refractive power, the second lens L2 has a negative refractive power, the third lens L3 has a positive refractive power, the fourth lens L4 has a positive refractive power, the fifth lens L5 has a negative refractive power, and the sixth lens L6 has a positive refractive power.

[0119] Furthermore, the object side surface S1 of the first lens L1 is convex near the optical axis O, and the image side surface S2 of the first lens L1 is concave near the optical axis O; the object side surface S3 of the second lens L2 is concave near the optical axis O, and the image side surface S4 of the second lens L2 is concave near the optical axis O; the object side surface S5 of the third lens L3 is convex near the optical axis O, and the image side surface S6 of the third lens L3 is convex near the optical axis O; the object side surface S7 of the fourth lens L4 is convex near the optical axis O, and the image side surface S8 of the fourth lens L4 is convex near the optical axis O; the object side surface S9 of the fifth lens L5 is concave near the optical axis O, and the image side surface S10 of the fifth lens L5 is concave near the optical axis O; the object side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image side surface S12 of the sixth lens L6 is convex near the optical axis O.

[0120] The other parameters in the fifth embodiment are given in Table 5a below, and the definitions of the parameters can be obtained from the descriptions of the foregoing embodiments and will not be elaborated here. It can be understood that the units of the Y radius, thickness, and effective focal length in Table 5a are all mm. The refractive index, Abbe number, and reference wavelength of the effective focal length of each lens in Table 5a are all 546.0700 nm.

[0121] In the fifth embodiment, both the object side surface S11 and the image side surface S12 of the sixth lens L6 are aspherical surfaces, and Table 5b gives the conic constants k, and the higher-order term coefficients A4, A6, A8, A10, A12, A14, and A16 of the aspherical mirror surfaces that can be used in the fifth embodiment.

[0122] Table 5a

[0123]

[0124] Table 5b

[0125]

[0126] Please refer to Figure 10 , from Figure 10 the (A) longitudinal spherical aberration diagram, (B) astigmatism diagram, and (C) distortion curve diagram in it, it can be seen that in the fifth embodiment, the longitudinal spherical aberration, astigmatism, and distortion of the optical lens 100 are all well controlled, so that the optical lens 100 in this embodiment has good imaging quality. In addition, regarding Figure 10 the (A) in Figure 10 the (B) in Figure 10 and the (C) in Figure 2 the wavelengths corresponding to the curves in (A) in Figure 2 the (B) in Figure 2 and the (C) in

[0127] The Sixth Embodiment

[0128] The structural schematic diagram of the optical lens 100 disclosed in the sixth embodiment of the present application is as shown in Figure 11 Figure 5. The optical lens 100 includes a first lens L1, a second lens L2, a third lens L3, a stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, an infrared filter IR, and a protective glass CG, which are sequentially arranged from the object side to the image side along the optical axis O.

[0129] Furthermore, the first lens L1 has a negative refractive power, the second lens L2 has a negative refractive power, the third lens L3 has a positive refractive power, the fourth lens L4 has a positive refractive power, the fifth lens L5 has a negative refractive power, and the sixth lens L6 has a positive refractive power.

[0130] Furthermore, the object side surface S1 of the first lens L1 is convex near the optical axis O, and the image side surface S2 of the first lens L1 is concave near the optical axis O; the object side surface S3 of the second lens L2 is concave near the optical axis O, and the image side surface S4 of the second lens L2 is concave near the optical axis O; the object side surface S5 of the third lens L3 is convex near the optical axis O, and the image side surface S6 of the third lens L3 is convex near the optical axis O; the object side surface S7 of the fourth lens L4 is convex near the optical axis O, and the image side surface S8 of the fourth lens L4 is convex near the optical axis O; the object side surface S9 of the fifth lens L5 is concave near the optical axis O, and the image side surface S10 of the fifth lens L5 is concave near the optical axis O; the object side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image side surface S12 of the sixth lens L6 is convex near the optical axis O.

[0131] Other parameters in the sixth embodiment are given in Table 6a below, and the definitions of each parameter can be obtained from the descriptions of the foregoing embodiments, so they will not be elaborated 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 refractive index, Abbe number, and reference wavelength of the effective focal length of each lens in Table 6a are all 546.0700 nm.

[0132] In the sixth embodiment, both the object side surface S11 and the image side surface S12 of the sixth lens L6 are aspherical surfaces. Table 6b gives the conic constant k, and the higher-order term coefficients A4, A6, A8, A10, A12, A14, and A16 that can be used for each aspherical mirror surface in the sixth embodiment.

[0133] Table 6a

[0134]

[0135] Table 6b

[0136]

[0137] Please refer toFigure 12 , from Figure 12 's (A) longitudinal spherical aberration diagram, (B) astigmatism diagram, and (C) distortion curve diagram, it can be seen that in the sixth embodiment, the longitudinal spherical aberration, astigmatism, and distortion of the optical lens 100 are all well controlled, so that the optical lens 100 of this embodiment has good imaging quality. In addition, regarding Figure 12 's (A), Figure 12 's (B), and Figure 12 's (C), the wavelengths corresponding to the curves can refer to those described in (A) of the first embodiment regarding Figure 2 's (A), Figure 2 's (B), Figure 2 's (C), which will not be elaborated here.

[0138] Table 7 shows the values of FOV, FNO, TTL / F, TTL / IMGH, F / IMGH, TTL / BFL, TTL / CT3, FOV / F, CT3 / ET3, CT4 / ET4, CT6 / ET6, F1 / R2, F2 / F, |SAGS4 / SAGS3|, SD6 / SD7, f123 / f456, SD1 / IMGH, (R6 + CT3) / R5, R6 / ET3, CT3 / CT2, FOV / FNO, F4 / CT4, F5 / CT5, F1 / F, F3 / F, F4 / F, F5 / F, F6 / F, R1 / R2, R5 / R6, R7 / R8, R9 / R10, and R11 / R12 in the optical lens 100 of the first to sixth embodiments.

[0139] Table 7

[0140]

[0141]

[0142] Please refer to Figure 13 , this application embodiment also discloses an imaging module 200. The imaging module 200 includes an image sensor chip 201 and the above optical lens 100. The image sensor chip 201 is disposed on the image side of the optical lens 100. The optical lens 100 is used to receive the optical signal of the object to be photographed and project it onto the image sensor chip 201. The image sensor chip 201 is used to convert the optical signal corresponding to the object to be photographed into an image signal, which will not be elaborated here. It can be understood that the imaging module 200 with the above optical lens 100 also has all the technical effects of the above optical lens 100, that is, it can meet the requirements of miniaturization, large aperture, and wide field of view.

[0143] Please refer to Figure 14, an embodiment of the present application also discloses a terminal device 300, which includes a housing 301 and the above-mentioned camera module 200. The camera module 200 is disposed in the housing 300. Among them, the terminal device 300 can be, but is not limited to, an automobile, a mobile phone, a tablet computer, a notebook computer, a smart watch, a monitor, a smart robot, a floor cleaning robot, etc. It can be understood that the terminal device 300 with the above-mentioned camera module 200 also has all the technical effects of the above-mentioned optical lens 100, that is, it can meet the requirements of miniaturization, large aperture, and wide field of view.

[0144] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit them. Although the present application has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. An optical lens, characterized in that, There are 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 image side surface of the second lens is concave 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 positive refractive power, the object side surface of the fourth lens is convex near the optical axis, and the image side surface of the fourth lens is convex near the optical axis; The fifth lens, having negative refractive power, the object side surface of the fifth lens is concave near the optical axis, and the image side surface of the fifth lens is concave near the optical axis; The sixth lens, having positive 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 convex near the optical axis; The optical lens satisfies the following relationships: 160° ≤ FOV ≤ 190°; 1.8 ≤ FNO ≤ 2.2; Wherein, FOV is the maximum 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 relationships: 9 ≤ TTL / F ≤ 12; and / or, 5.9 ≤ TTL / IMGH ≤ 7.4; and / or, 0.5 ≤ F / IMGH ≤ 0.7; Wherein, TTL is the distance from the object side surface of the first lens to the imaging surface of the optical lens on the optical axis, 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.

3. The optical lens according to claim 1, wherein The optical lens satisfies the following relationships: 4.9 ≤ TTL / BFL ≤ 6.8; and / or, 3.8 ≤ TTL / CT3 ≤ 6; and / or, 89° / mm ≤ FOV / F ≤ 99° / mm; Wherein, TTL is the distance from the object side surface of the first lens to the imaging surface of the optical lens on the optical axis, BFL is the distance from the image side surface of the sixth lens to the imaging surface of the optical lens on the optical axis, CT3 is the thickness of the third lens on the optical axis, and F is the effective focal length of the optical lens.

4. The optical lens according to claim 1, characterized in that, The optical lens satisfies the following relationships: 0.8 ≤ CT3 / ET3 ≤ 1.2; and / or, 1.18 ≤ CT4 / ET4 ≤ 1.75; and / or, 1.47 ≤ CT6 / ET6 ≤ 1.81; Wherein, 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 surface of the third lens to the maximum effective aperture of the image side surface of the third lens, CT4 is the thickness of the fourth lens on the optical axis, ET4 is the distance in the optical axis direction from the maximum effective aperture of the object side surface of the fourth lens to the maximum effective aperture of the image side surface of the fourth lens, CT6 is the thickness of the sixth lens on the optical axis, and ET6 is the distance in the optical axis direction from the maximum effective aperture of the object side surface of the sixth lens to the maximum effective aperture of the image side surface of the sixth lens.

5. The optical lens according to claim 1, wherein, The optical lens satisfies the following relationships: -1.75 ≤ F1 / R2 ≤ -1.5; and / or, -2.7 ≤ F2 / F ≤ -1.95; and / or, 2 ≤ |SAGS4 / SAGS3| ≤ 6; wherein, F is the effective focal length of the optical lens, F1 is the effective focal length of the first lens, F2 is the effective focal length of the second lens, R2 is the curvature radius of the image side of the first lens on the optical axis, SAGS3 is the distance on the optical axis from the intersection of the object side of the second lens and the optical axis to the maximum effective aperture of the object side of the second lens, and SAGS4 is the distance on the optical axis from the intersection of the image side of the second lens and the optical axis to the maximum effective aperture of the image side of the second lens.

6. The optical lens according to claim 1, wherein The optical lens satisfies the following relational expressions: 0.55 ≤ SD6 / SD7 ≤ 1.6; and / or, 0.55 ≤ f123 / f456 ≤ 1.25; and / or, 1.78 ≤ SD1 / IMGH ≤ 2.2; wherein, SD1 is half of the maximum effective aperture of the object side of the first lens, 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, f123 is the combined effective focal length of the first lens, the second lens and the third lens, f456 is the combined effective focal length of the fourth lens, the fifth lens and the sixth lens, and IMGH is half of the image height corresponding to the maximum field of view angle of the optical lens.

7. The optical lens according to claim 1, wherein The optical lens satisfies the following relational expressions: -1.6 ≤ (R6 + CT3) / R5 ≤ -0.2; and / or, -3.5 ≤ R6 / ET3 ≤ -1.4; and / or, 4.5 ≤ CT3 / CT2 ≤ 9; wherein, R5 is the curvature radius of the object side of the third lens on the optical axis, R6 is the curvature radius of the image side of the third lens on the optical axis, CT2 is the thickness of the second lens on the optical axis, CT3 is the thickness of the third lens on the optical axis, and 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.

8. The optical lens according to claim 1, characterized in that, The optical lens satisfies the following relational expressions: 74° ≤ FOV / FNO ≤ 100°; and / or, 1.3 ≤ F4 / CT4 ≤ 2.1; and / or, -6 ≤ F5 / CT5 ≤ -2; wherein, F4 is the effective focal length of the fourth lens, F5 is the effective focal length of the fifth lens, CT4 is the thickness of the fourth lens on the optical axis, and CT5 is the thickness of the fifth lens on the optical axis.

9. An imaging module, characterized in that, The imaging module includes a photosensitive chip and the optical lens according to any one of claims 1 to 8, and the photosensitive chip is disposed on the image side of the optical lens.

10. A terminal device, characterized in that, It includes a housing and the imaging module according to claim 9, and the imaging module is disposed in the housing.

Images