Optical lens, camera module and terminal device

Abstract

An optical lens, a camera module and a terminal device are provided, wherein the optical lens has six lenses with refractive power, and comprises first to sixth lenses in sequence from the object side to the image side along the optical axis, and the refractive power of the first to sixth lenses is negative, negative, positive, negative, positive and negative respectively; the object side surface and the image side surface of the first lens are convex and concave respectively at the near optical axis; the object side surface and the image side surface of the second lens are concave and convex respectively at the near optical axis; the object side surface and the image side surface of the third lens are both convex at the near optical axis; the object side surface and the image side surface of the fourth lens are convex and concave respectively at the near optical axis; the object side surface and the image side surface of the fifth lens are both convex at the near optical axis; the image side surface of the sixth lens is concave at the near optical axis; the object side surface and the image side surface of the seventh lens are convex and concave respectively at the near optical axis; and the optical lens satisfies the relationship: 65°<FOV<75°, 3.5<TTL / H<4.2. The optical lens provided in the application can realize miniaturization and has the characteristics of a large field of view.

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 demand for driving safety and the continuous maturity of ADAS (Advanced Driver Assistance System) technology, the market demand for vehicle-mounted cameras has shown explosive growth. By using front-view, rear-view, surround-view and other vehicle-mounted lenses installed on vehicles, comprehensive information inside and outside the vehicle can be obtained, thus helping drivers to make correct driving behaviors. Therefore, the environmental adaptability and imaging stability of the lens become the safety guarantee during the driving process of the vehicle.

[0003] The ADAS system has high requirements for the vehicle-mounted lenses it carries. Firstly, it requires the vehicle-mounted lenses to have high imaging clarity to effectively distinguish the details of the road environment. It also requires the vehicle-mounted lenses to have a large field of view to better collect the road information in front of the vehicle to meet the special requirements of the intelligent driving system. In addition, due to the limited installation space of the vehicle-mounted system, the volume of the vehicle-mounted lenses is required not to be too large. Summary of the Invention

[0004] In view of the above, it is necessary to propose an optical lens, a camera module, and a terminal device, which can achieve miniaturized design of the optical lens while having a large field of view.

[0005] 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 sequentially 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, both the object side surface and the image side surface of the third lens are 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, both the object side surface and the image side surface of the fifth lens are convex near the optical axis; a sixth lens with negative refractive power, the image side surface of the sixth lens is concave near the optical axis; the optical lens satisfies the following relational expressions: 65° < FOV < 75°, 3.5 < TTL / H < 4.2; where, FOV is the maximum field of view of the optical lens, TTL is the distance from the object side surface of the first lens to the imaging surface of the optical lens on the optical axis, and H is the image height corresponding to the maximum field of view of the optical lens.

[0006] The optical lens provided in this application includes a first lens with negative refractive power, paired with a convex object-side surface near the optical axis and a concave image-side surface near the optical axis. This effectively controls the effective aperture of the first lens and allows the optical lens to have a larger angle of incidence, which is beneficial for achieving a wide-angle effect. It also helps to better control the head aperture of the optical lens. A second lens with negative refractive power, paired with a concave object-side surface near the optical axis and a convex image-side surface near the optical axis, effectively gathers the large-angle incident light rays projected by the first lens, allowing the light to enter smoothly and effectively reducing field astigmatism. A third lens with positive refractive power, paired with a convex object-side surface near the optical axis and a convex image-side surface near the optical axis, facilitates the convergence of light rays after passing through the third lens. To reduce the eccentricity sensitivity of the optical lens, the overall optical length of the lens can also be reduced. The fourth lens with negative refractive power can be cemented with the fifth lens with positive refractive power to form a cemented lens, which helps to reduce chromatic aberration and correct spherical aberration, thereby improving the resolution of the optical lens. In addition, the fourth lens with negative refractive power has a convex object-side and a concave image-side, which facilitates the smooth entry of light into the fifth lens. The fifth lens with positive refractive power has a convex object-side and a convex image-side, which helps the light to converge after passing through the fifth lens, reducing the overall optical length of the optical lens. The sixth lens with negative refractive power, combined with a surface design where the image-side is concave near the optical axis, facilitates the smooth entry of light into the image plane, improving the relative illumination of the optical lens, while controlling the back focal length to achieve the designed image height. Therefore, the optical lens of this application has a wide-angle capability while maintaining good image quality.

[0007] When the field of view (FOV) is between 65° and 75°, the optical lens has a large field of view, which allows it to capture more scene content and enrich the imaging information. When the TTL / H is between 3.5 and 4.2, the optical lens has a sufficiently large image height, which can be adapted to larger image sensors and achieve higher image quality. This allows the optical lens to help the driver obtain a clearer image and more accurate driving environment information when used in driver assistance systems. In addition, when the optical lens meets the above relationship, it can also limit the range of the total optical length, which helps to achieve a smaller size and meet the requirements of miniaturization design.

[0008] Secondly, this application discloses a camera module, which includes a photosensitive chip and an optical lens as described in the first aspect above, wherein the photosensitive chip is disposed on the image side of the optical lens. The camera module with the optical lens enables miniaturized optical lens design while simultaneously providing the optical lens with a large field of view.

[0009] Thirdly, this application discloses a terminal device, including a housing and a camera module as described in the second aspect above, wherein the camera module is disposed in the housing. The electronic device having the camera module achieves a miniaturized optical lens design while simultaneously enabling the optical lens to possess a large field of view. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of the optical lens disclosed in the first embodiment of this application.

[0011] Figure 2 These are the longitudinal spherical aberration curve, astigmatism curve, and distortion curve of the optical lens disclosed in the first embodiment of this application.

[0012] Figure 3 This is a schematic diagram of the structure of the optical lens disclosed in the second embodiment of this application.

[0013] Figure 4 These are the longitudinal spherical aberration curve, astigmatism curve, and distortion curve of the optical lens disclosed in the second embodiment of this application.

[0014] Figure 5 This is a schematic diagram of the structure of the optical lens disclosed in the third embodiment of this application.

[0015] Figure 6 These are the longitudinal spherical aberration curve, astigmatism curve, and distortion curve of the optical lens disclosed in the third embodiment of this application.

[0016] Figure 7 This is a schematic diagram of the structure of the optical lens disclosed in the fourth embodiment of this application.

[0017] Figure 8 These are the longitudinal spherical aberration curve, astigmatism curve, and distortion curve of the optical lens disclosed in the fourth embodiment of this application.

[0018] Figure 9 This is a schematic diagram of the structure of the optical lens disclosed in the fifth embodiment of this application.

[0019] Figure 10 These are the longitudinal spherical aberration curve, astigmatism curve, and distortion curve of the optical lens disclosed in the fifth embodiment of this application.

[0020] Figure 11 This is a schematic diagram of the structure of the optical lens disclosed in the sixth embodiment of this application.

[0021] Figure 12 These are the longitudinal spherical aberration curve, astigmatism curve, and distortion curve of the optical lens disclosed in the sixth embodiment of this application.

[0022] Figure 13This is a schematic diagram of the structure of the optical lens disclosed in the seventh embodiment of this application.

[0023] Figure 14 These are the longitudinal spherical aberration curve, astigmatism curve, and distortion curve of the optical lens disclosed in the seventh embodiment of this application.

[0024] Figure 15 This is a schematic diagram of the structure of the optical lens disclosed in the eighth embodiment of this application.

[0025] Figure 16 These are the longitudinal spherical aberration curve, astigmatism curve, and distortion curve of the optical lens disclosed in the eighth embodiment of this application.

[0026] Figure 17 This is a schematic diagram of the camera module disclosed in this application.

[0027] Figure 18 This is a schematic diagram of the terminal device disclosed in this application. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Firstly, please refer to Figure 1 This application discloses an optical lens 100 comprising six lenses with refractive power, arranged sequentially from the object side to the image side along the optical axis O as a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6. During imaging, light rays enter sequentially from the object side of the first lens L1 through the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, and the sixth lens L6, and are ultimately imaged onto the imaging plane IMG of the optical lens 100.

[0030] 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.

[0031] Furthermore, the object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is concave near the optical axis O; the object-side surface S3 of the second lens L2 is concave near the optical axis O, and the image-side surface S4 of the second lens L2 is convex near the optical axis O; the object-side surface S5 and the image-side surface S6 of the third lens L3 are both 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 concave near the optical axis O; the object-side surface S9 and the image-side surface S10 of the fifth lens L5 are both convex near the optical axis O; and the image-side surface S12 of the sixth lens L6 is concave near the optical axis O.

[0032] In the optical lens 100 provided in this application, a first lens L1 with negative refractive power, paired with an object-side surface S1 that is convex near the optical axis O and an image-side surface S2 that is concave near the optical axis O, can effectively control the effective aperture of the first lens L1 of the optical lens 100, while enabling the optical lens 100 to have a larger light incident angle, which is beneficial to achieving a wide-angle effect of the optical lens 100, and can also better control the head aperture of the optical lens 100; a second lens L2 with negative refractive power, paired with an object-side surface S3 that is concave near the optical axis O and an image-side surface S4 that is convex near the optical axis O, can better converge the large-angle incident light rays projected by the first lens L1, so that the light rays enter smoothly, and can better reduce the field curvature astigmatism of the optical lens 100; a third lens L3 with positive refractive power, paired with an object-side surface S5 that is convex near the optical axis O and an image-side surface S6 that is convex near the optical axis O, can facilitate the convergence of light rays after passing through the third lens L3, and can To reduce the eccentricity sensitivity of the optical lens 100, the overall optical length of the optical lens 100 can also be reduced. The fourth lens L4 with negative refractive power can be cemented with the fifth lens L5 with positive refractive power to form a cemented lens, which is beneficial to reduce the chromatic aberration of the optical lens 100 and correct the spherical aberration of the optical lens 100, thereby improving the resolution of the optical lens 100. In addition, the fourth lens L4 with negative refractive power has a convex object side S7 and a concave image side S8, which is conducive to the smooth entry of light into the fifth lens L5. The fifth lens L5 with positive refractive power has a convex object side S9 and a convex image side S10, which can facilitate the convergence of light after passing through the fifth lens L5, thereby reducing the overall optical length of the optical lens 100. The sixth lens L6 with negative refractive power, combined with the surface design of the image side S12 being concave at the near optical axis O, is conducive to the smooth entry of light into the imaging plane, which can improve the relative illumination of the optical lens 100, while controlling the back focal length to achieve the image height required by the design. Therefore, the optical lens 100 of this application has both wide-angle capability and good image quality.

[0033] In some embodiments, when the optical lens 100 is applied to electronic devices such as in-vehicle devices, dashcams, or automobiles, the first lens L1, second lens L2, third lens L3, fourth lens L4, fifth lens L5, and sixth lens L6 can all be made of glass. This allows the optical lens 100 to have good optical performance while reducing the impact of temperature on the lenses. Of course, some lenses in the optical lens 100 can be made of glass, while others can be made of plastic. This ensures that the impact of temperature on the lenses is reduced to achieve better imaging results, while also reducing the processing cost and weight of the lenses, thereby reducing the overall weight of the optical lens 100. Furthermore, it is understood that when the optical lens 100 is applied to electronic devices such as smartphones and tablets, the first lens L1, second lens L2, third lens L3, fourth lens L4, fifth lens L5, and sixth lens L6 can be made of plastic to reduce the overall weight of the optical lens 100.

[0034] In some embodiments, spherical lenses are considered to have the advantages of simple manufacturing process and low production cost, and can facilitate flexible design of lens surface shape, thereby improving the imaging resolution of optical lens 100. Aspherical lenses allow for more flexible design of the object side or image side of the lens, enabling the lens to effectively solve problems such as unclear imaging, distorted field of view, or narrow field of view even when the lens is small and thin. Furthermore, optical lens 100 does not need to set too many lenses to achieve good image quality, which is beneficial for shortening the length of optical lens 100. Based on this, the first lens L1, the fourth lens L4, and the fifth lens L5 can be spherical lenses, while the second lens L2, the third lens L3, and the sixth lens L6 are aspherical lenses. This combination of spherical and aspherical lenses not only improves the manufacturability of each lens and facilitates surface design, but also allows for more flexible design of the object-side or image-side surfaces. This enables each lens to effectively address issues such as unclear imaging, distorted field of view, or narrow field of view even with smaller and thinner dimensions. Furthermore, the optical lens 100 does not require an excessive number of lenses to achieve good image quality, which helps to shorten the length of the optical lens 100. It is understood that in other embodiments, the surfaces of each lens in the optical lens 100 can be entirely spherical, entirely aspherical, or any combination of spherical and aspherical surfaces, depending on actual needs. Therefore, this embodiment does not impose specific limitations.

[0035] In some embodiments, the optical lens 100 further includes an aperture stop STO, and the aperture stop STO can be an aperture diaphragm and / or a field stop. For example, the aperture stop STO can be an aperture diaphragm, or the aperture stop STO can be a field stop, or the aperture stop STO can be an aperture diaphragm and a field stop. By disposing the aperture stop STO between the image side S6 of the third lens L3 and the object side S7 of the fourth lens L4, the exit pupil can be made to be far 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 can be understood that in other embodiments, the aperture stop STO can also be disposed between other lenses and adjusted according to actual conditions, and this embodiment does not make specific limitations thereon.

[0036] In some embodiments, the optical lens 100 further includes an IR filter IR, and the IR filter IR is disposed between the fifth lens L5 and the sixth lens L6. Optionally, the IR filter IR can be an infrared cut-off filter to filter out infrared light and allow visible light to pass through, so that the imaging is more in line with the visual experience of the human eye, thereby improving the imaging quality. In some other embodiments, the IR filter IR can 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, so that the optical lens 100 can image in a low-light environment or a special application scenario and obtain good imaging quality. It can be understood that the IR filter IR can be made of plastic, or can be made of optical glass coating, or other materials of IR filter IR, and can be selected according to actual needs, and this embodiment does not make specific limitations thereon.

[0037] In some embodiments, the optical lens 100 further includes a protective glass CG, and the protective glass CG is disposed between the sixth lens L6 and the imaging surface IMG of the optical lens 100, so as to protect the photosensitive chip and prevent dust. The protective glass CG can be made of plastic, or can be made of optical glass coating, or other materials of protective glass CG, and can be selected according to actual needs, and this embodiment does not make specific limitations thereon. It can be understood that the protective glass CG can be a part of the optical lens 100, or can be removed from the optical lens 100, but when the protective glass CG is removed, the overall optical length of the optical lens 100 remains unchanged.

[0038] In some embodiments, the optical lens 100 satisfies the relationship: 65° < FOV < 75°. Wherein, FOV is the maximum field angle of the optical lens 100. Further, 66° < FOV < 72°. Specifically, FOV can be 66.1°, 67°, 68°, 69°, 70°, 71° or 71.8°, etc. When the optical lens 100 satisfies the above relationship, the optical lens 100 has a larger field angle, which is beneficial for the optical lens 100 to obtain more scene content, and further enriches the imaging information of the optical lens 100.

[0039] In some embodiments, the optical lens 100 satisfies the relationship: 3.5 < TTL / H < 4.2. 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 H is the image height corresponding to the maximum field angle of the optical lens 100. Specifically, TTL / H can be 3.51, 3.6, 3.7, 3.8, 3.9, 4.0, 4.1, or 4.19, etc. When the optical lens 100 satisfies the above relationship, it can ensure that the optical lens 100 has a sufficiently large image height, so that a larger image sensor can be adapted and higher imaging quality can be obtained. Thus, when the optical lens is used in an assisted driving system, it can help the driver obtain a clearer image to obtain more accurate driving environment information. In addition, when the optical lens satisfies the above relationship, it can also limit the range of the overall optical length, which helps the optical lens 100 to obtain a smaller volume, thereby meeting the requirements of miniaturized design.

[0040] In some embodiments, the optical lens 100 satisfies the relationship: 4 < TTL / F < 5.5. 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, 4.2 < TTL / F < 5.2. Specifically, TTL / F can be 4.1, 4.3, 4.5, 4.7, 4.9, 5.1, 5.3, or 5.4, etc. When the optical lens 100 satisfies the above relationship, it can control the ratio of the overall length of the optical lens 100 to the focal length of the optical lens 100 within a reasonable range, so that not only can the miniaturization of the optical lens 100 be achieved, but it is also beneficial to better converge light on the imaging surface IMG, and thus is beneficial to improving the imaging quality of the optical lens 100.

[0041] In some embodiments, the optical lens 100 satisfies the relation: 40° < FOV / FNO < 45°. Here, FOV is the maximum field of view angle of the optical lens 100, and FNO is the f-number of the optical lens 100. Specifically, FOV / FNO can be 40.1°, 40.5°, 41°, 41.5°, 42.0°, 42.5°, 43°, 43.5°, 44°, or 44.9°, etc. When the optical lens 100 satisfies the above relation, the field of view angle and the light transmission amount of the optical lens 100 can be reasonably controlled, the distortion of the edge field of view can be improved, and the excessive light flux of the optical lens 100 can be prevented. If it is higher than the upper limit of the above relation, the field of view angle of the optical lens 100 is too large, resulting in excessive distortion of the edge field of view, and there will be a distortion phenomenon in the periphery of the image. In addition, it will also cause the f-number to be too small, resulting in too large light transmission amount of the optical lens 100, causing non-effective light rays to reach the imaging surface IMG as well, resulting in aberration such as spherical aberration and field curvature in the imaging (especially at the edge field of view), and further causing the imaging performance of the optical lens 100 to decline; if it is lower than the lower limit of the above relation, the light transmission amount of the optical lens 100 is insufficient, and the clarity of the captured image decreases.

[0042] In some embodiments, the optical lens 100 satisfies the relation: 1.1 < H / F < 1.3. H is the image height corresponding to the maximum field of view angle of the optical lens 100, and F is the effective focal length of the optical lens 100. Specifically, H / F can be 1.11, 1.13, 1.15, 1.17, 1.19, 1.21, 1.27, or 1.29, etc. By reasonably configuring the ratio relationship between the image height and the focal length of the optical lens 100, it is beneficial for the optical lens 100 to maintain good optical performance, realize the feature of high pixels of the optical lens 100, capture the details of the photographed object well, have a high resolution, and at the same time, it is beneficial for the optical lens 100 to have a small chief ray exit angle, thereby reducing the risk of vignetting and distortion of the optical lens 100.

[0043] In some embodiments, the optical lens 100 satisfies the relation: 2 < (R12 - R21) / CT12 < 3. Here, R12 is the curvature radius of the image side S2 of the first lens L1 on the optical axis O, R21 is the curvature radius of the object side S3 of the second lens L2 on the optical axis O, and CT12 is the distance between the image side S2 of the first lens L1 and the object side S3 of the second lens L2 on the optical axis O. Further, 2.1 < (R2 - R3) / CT12 < 2.8. Specifically, (R2 - R3) / CT12 can be 2.11, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, or 2.79, etc. When the optical lens 100 satisfies the above relation, it is beneficial to reasonably configure the ratio of the curvature radius of the object side S3 of the second lens L2 on the optical axis O, the curvature radius of the image side S2 of the first lens L1 on the optical axis O, and the distance between the image side S2 of the first lens L1 and the object side S3 of the second lens L2 on the optical axis O, enabling light to smoothly transition from the first lens L1 to the second lens L2, and enabling the optical lens 100 to obtain a larger field of view. At the same time, the reasonable distance between the first lens L1 and the second lens L2 can not only reduce the risk of stray light ghost images but also reduce the assembly difficulty of the lenses.

[0044] In some embodiments, the optical lens 100 satisfies the relation: -1.1 < R12 / R21 < -0.7. R12 is the curvature radius of the image side S2 of the first lens L1 on the optical axis O, and R21 is the curvature radius of the object side S3 of the second lens L2 on the optical axis O. Specifically, R12 / R21 can be -1.01, -0.95, -0.91, -0.85, -0.8, -0.75, -0.7, or -0.69, etc. When the optical lens 100 satisfies the above relation, the surface shapes of the image side S3 of the first lens L1 and the object side S4 of the second lens L2 can be made similar, thereby avoiding excessive deflection of light when passing through the image side S3 of the first lens L1 and the object side S4 of the second lens L2. At the same time, it can also reduce the sensitivity of the photosensitive chip and improve the imaging quality of the photosensitive chip.

[0045] In some embodiments, the optical lens 100 satisfies the relation: F2 / CT2 > -20. Here, F2 is the effective focal length of the second lens L2, and CT2 is the thickness of the second lens L2 on the optical axis O. Specifically, F2 / CT2 can be -19.9, -17, -15, -13, -11, -9, -7, or -6, etc. When the optical lens 100 satisfies the above relation, by reasonably configuring the effective focal length of the second lens L2 and the thickness of the second lens L2 on the optical axis O, the aberration of the optical lens 100 can be effectively corrected, improving the imaging quality. When exceeding the range of the above relation, the effective focal length of the second lens L2 is too small, resulting in too strong refractive power of the second lens L2, and thus large aberration is likely to occur.

[0046] In some embodiments, the optical lens 100 satisfies the relationship: 1 < F3 / F < 2. Where F3 is the effective focal length of the third lens L3, and F is the effective focal length of the optical lens 100. Specifically, F3 / F can be 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, or 1.9, etc. By limiting the relationship between the focal length of the third lens L3 and the effective focal length of the optical lens 100, the peripheral field aberration of the optical lens 100 can be corrected, the imaging resolution of the optical lens 100 can be improved, and thus the imaging quality of the optical lens 100 can be improved. When exceeding the upper limit of the above relationship, the refractive power of the third lens L3 is relatively too weak, the light converging ability becomes poor, resulting in large light deflection, which will affect the correction ability of the optical lens 100 for chromatic aberration and aberration, and thus affect the imaging quality of the optical lens 100; when lower than the lower limit of the conditional formula, the effective focal length of the optical lens 100 will be too large, resulting in a smaller field angle of the optical lens 100, and the characteristics of large aperture and wide angle cannot be achieved.

[0047] In some embodiments, the optical lens 100 satisfies the relationship: 0.85 < SD21 / SD22 < 0.95. Where SD21 is the maximum effective aperture of the object side surface S of the second lens L2, and SD22 is the maximum effective aperture of the image side surface S4 of the second lens L2. Specifically, SD21 / SD22 can be 0.851, 0.86, 0.87, 0.88, 0.9, 0.91, 0.93, or 0.94, etc. By reasonably controlling the difference between the aperture of the object side surface S3 and the aperture of the image side surface S4 of the second lens L2 within a certain range, the peripheral field light can be made smoother and the relative brightness of the optical lens 100 can be improved.

[0048] In some embodiments, the optical lens 100 satisfies the relationship: 1.4 < SD11 / H < 1.8. Where SD11 is the maximum effective aperture of the object side surface S1 of the first lens L1, and H is the image height corresponding to the maximum field angle of the optical lens 100. Specifically, SD11 / H can be 1.41, 1.45, 1.5, 1.55, 1.60, 1.65, 1.72, or 1.79, etc. When the optical lens 100 satisfies the above relationship, it can ensure that the effective aperture of the first lens L1 and the image height of the optical lens 100 are within a suitable range, so as to control the aperture of the first lens L1, so that the illuminance, field angle, and overall optical length reach balance. When exceeding the range of this relationship, the aperture of the first lens L1 or the image height of the optical lens 100 exceeds the range defined by the relationship, making the overall size of the optical lens 100 too large or the imaging quality poor.

[0049] In some embodiments, the optical lens 100 satisfies the relation: 1.4 < SD11 / SD12 < 2. Here, SD11 is the maximum effective aperture of the object side S1 of the first lens L1, and SD12 is the maximum effective aperture of the image side S2 of the first lens L1. Specifically, SD11 / SD12 can be 1.41, 1.45, 1.5, 1.55, 1.6, 1.7, 1.8, 1.9, etc. When the optical lens 100 satisfies the above relation, the difference in aperture sizes between the object side S1 and the image side S2 of the first lens L1 can be reduced, ensuring that the aperture of the object side S1 of the first lens L1 is not too large, and reducing the sensitivity of the optical lens 100. More importantly, by controlling the ratio of SD11 and SD12 within the above range, the aperture of the object side S1 of the first lens L1 can be better restricted, thereby making the head aperture with the optical lens 100 smaller and achieving miniaturization of the optical lens 100.

[0050] In some embodiments, the optical lens 100 satisfies the relation: 0.9 < CT1 / CT2 < 2. Here, CT1 is the thickness of the first lens L1 on the optical axis O, and CT2 is the thickness of the second lens L2 on the optical axis O. Specifically, CT1 / CT2 can be 0.901, 1.0, 1.1, 1.3, 1.5, 1.7, 1.9, 1.99, etc. When the optical lens 100 satisfies the above relation, the relationship between the refractive powers of the first lens L1 and the second lens L2 can be effectively adjusted, which is beneficial for the optical lens 100 to achieve wide-angle and miniaturization. At the same time, the angle of light exiting the optical lens 100 is reduced, so as to better match the photosensitive chip and improve the optical performance.

[0051] In some embodiments, the optical lens 100 satisfies the relation: CT3 / CT34 < 4. Here, CT3 is the thickness of the third lens L3 on the optical axis O, and CT34 is the distance on the optical axis O between the image side S6 of the third lens L3 and the object side S7 of the fourth lens L4. Further, 0.3 < CT3 / CT34 < 3.5. Specifically, CT3 / CT34 can be 0.301, 1, 1.5, 2, 2.5, 3, 0.349, etc. By reasonably limiting the distance of the third lens L3 on the optical axis O and the distance on the optical axis O from the image side S6 of the third lens L3 to the object side S7 of the fourth lens L4, the gap between the third lens L3 and the fourth lens L4 can be greatly compressed, which is beneficial for shortening the total length of the optical lens 100 and is beneficial for miniaturization of the optical lens 100.

[0052] In some embodiments, the optical lens 100 satisfies the relationship: 1 < F2 / F1 < 6. Here, F1 is the effective focal length of the first lens L1, and F2 is the effective focal length of the second lens L2. Specifically, F2 / F1 can be 1.1, 1.5, 2, 2.5, 3, 3.5, 4, or 5.9, etc. By reasonably controlling the ratio of the focal lengths of the second lens L2 and the first lens L1, it is beneficial to achieve the effects of a large aperture and a large image plane for the optical lens 100, and have an appropriate refractive power to fully contract the light beam, thereby being conducive to improving the image quality of the optical lens 100.

[0053] In some embodiments, the optical lens 100 satisfies the relationship: 1 < CT5 / CT4 < 8. Here, CT5 is the thickness of the fifth lens L5 on the optical axis O, and CT4 is the thickness of the fourth lens L4 on the optical axis O. Specifically, CT5 / CT4 can be 1.1, 2, 3, 4, 5, 6, 7.5, or 7.9, etc. When the optical lens 100 satisfies the above relationship, it is possible to reasonably control the ratio of the thicknesses of the fifth lens L5 and the fourth lens L4 on the optical axis O, thereby reasonably controlling their thicknesses, facilitating their reasonable arrangement on the optical axis O, and at the same time being able to balance aberrations, which is further conducive to improving the imaging quality of the optical lens 100.

[0054] In some embodiments, the optical lens 100 satisfies the relationship: 0.5 < ET5 / ET4 < 2.5. Here, 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, and ET4 is the distance in the direction of the optical axis O 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. Specifically, ET5 / ET4 can be 0.6, 0.8, 1.0, 1.3, 1.6, 1.9, 2.1, or 2.4, etc. When the optical lens 100 satisfies the above relationship, it is possible to reasonably control the ratio of the edge thicknesses of the fifth lens L5 and the fourth lens L4, so that the edge thicknesses of the fifth lens L5 and the fourth lens L4 are reasonable, which is further convenient for their gluing.

[0055] In some embodiments, the optical lens 100 satisfies the relationship: VD4 < 21. Here, VD4 is the Abbe number of the fourth lens L4. Specifically, VD4 can be 19.0, 19.3, 19.65, 19.95, 20.0, or 20.9, etc. When the optical lens 100 satisfies the above relationship, it is possible to reasonably configure the material of the fourth lens L4, so that the fourth lens L4 can effectively correct the chromatic aberration of the optical lens 100 and improve the imaging quality of the optical lens 100.

[0056] In some embodiments, the optical lens 100 satisfies the relation: VD5>65. Here, VD5 is the Abbe number of the fifth lens L5. Specifically, VD5 can be 75, 73, 71, 70, 72, 74, 68, 66, etc. When the optical lens 100 satisfies the above relation, the material of the fifth lens L5 can be reasonably configured, so that the fifth lens L5 can effectively correct the chromatic aberration of the optical lens 100 and improve the imaging quality of the optical lens 100.

[0057] In some embodiments, the fourth lens L4 and the fifth lens L5 are cemented together, which is beneficial to further enhance the effect of chromatic aberration elimination and spherical aberration correction of the optical lens 100.

[0058] In some embodiments, the optical lens 100 satisfies the relation: 1.1<R11 / (R12+CT1)<1.6. Here, R11 is the curvature radius of the object side surface S1 of the first lens L1 at the optical axis O, R12 is the curvature radius of the image side surface S2 of the first lens L1 at the optical axis O, and CT1 is the thickness of the first lens L1 on the optical axis O. Specifically, R11 / (R12+CT1) can be 1.101, 1.2, 1.3, 1.4, 1.5, 1.599, etc. When the optical lens 100 satisfies the above relation and the ratio of the above three is within the above range, it can ensure that the first lens L1 has high stability. Its object side surface S1 can not only obtain a larger light entrance amount and light entrance range, but also make the light transition to the next lens more smoothly, thus ensuring that the optical lens 100 has a small optical distortion.

[0059] In some embodiments, the optical lens 100 satisfies the relation: 0.75<R22 / (R21-CT2)<1.2. Here, R22 is the curvature radius of the image side surface S4 of the second lens L2 at the optical axis O, R21 is the curvature radius of the object side surface S3 of the second lens L2 at the optical axis O, and CT2 is the thickness of the second lens L2 on the optical axis O. Specifically, R22 / (R21-CT2) can be 0.751, 0.8, 0.85, 0.9, 0.95, 1, 1.19, etc. When the optical lens 100 satisfies the above relation, it is beneficial to reasonably configure the thickness of the second lens L2 on the optical axis O and the curvature radii of the object side surface S3 and the image side surface S4 of the second lens L2, improve the manufacturing yield of the second lens L2, and at the same time, it is also beneficial to correct the aberration and improve the imaging quality of the optical lens 100.

[0060] In some embodiments, the optical lens 100 satisfies the relation: 1.4 < (R11 - R22) / CT14 < 2.2. Here, R11 is the radius of curvature of the object side surface S1 of the first lens L1 at the optical axis O, R22 is the radius of curvature of the image side surface S4 of the second lens L2 at the optical axis O, and CT14 is the distance from the intersection point of the object side surface S1 of the first lens L1 and the optical axis O to the intersection point of the image side surface S8 of the fourth lens L4 and the optical axis O. Specifically, (R11 - R22) / CT14 can be 1.41, 1.7, 1.6, 1.8, 1.5, 1.9, 2, 2.19, etc. When the optical lens 100 satisfies the above relation, the gap between the first lens L1 and the fourth lens L4 can be greatly compressed. At the same time, it is also beneficial to correct aberrations and improve the imaging quality of the optical lens 100.

[0061] In some embodiments, the optical lens 100 satisfies the relation: 48° < FOV*F / H < 65°. FOV is the maximum field angle of the optical lens 100, F is the effective focal length of the optical lens 100, and H is the image height corresponding to the maximum field angle of the optical lens 100. Specifically, FOV*F / H can be 48.1°, 50°, 53°, 56°, 59°, 61°, 63°, 64.9°, etc. When the optical lens 100 satisfies the above relation, it is beneficial to achieve the effect of a large image height, facilitate the matching of the photosensitive chip, and improve the image plane brightness of the optical lens 100. When exceeding the upper limit of the above relation, the maximum image height of the optical lens 100 becomes smaller, resulting in a reduction in the field of view range of the optical lens 100, which is not conducive to achieving the effect of a large image height; when lower than the lower limit of the above relation, the field angle of the optical lens 100 becomes smaller, and it cannot reach the field angle required for the front view and main field of view cameras, which is not conducive to achieving the wide-angle characteristic of the optical lens 100.

[0062] In some embodiments, the optical lens 100 satisfies the relation: -7 < F6 / F5 < -3. Here, F6 is the effective focal length of the sixth lens L6, and F5 is the effective focal length of the fifth lens L5. Specifically, F6 / F5 can be -6.9, -6, -5.5, -5, -4.5, -4, -3.5, -2.9, etc. By reasonably controlling the ratio of the focal length of the sixth lens L6 to the focal length of the fifth lens L5, it is beneficial to reasonably distribute the refractive powers of the fifth lens L5 and the sixth lens L6, beneficial to the balance of aberrations, and thus beneficial to improving the imaging quality of the optical lens 100.

[0063] In some embodiments, the optical lens 100 satisfies the relation: FNO < 1.8. Here, FNO is the f-number of the optical lens 100. Further, 1.5 < FNO < 1.7. Specifically, FNO can be 1.79, 1.71, 1.6, 1.51, etc. When the optical lens 100 satisfies the above relation, it has the characteristic of a large aperture. 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 object space scenes with low light brightness such as shooting high-quality night scenes and starry skies. In addition, it can also avoid introducing excessive aberrations, making the optical lens 100 achieve an overall balance.

[0064] In some embodiments, the optical lens 100 satisfies the relations: -3 < F1 / F < -1; F2 / F > -15; -2 < F4 / F < -1; F6 / F > -10. Here, F1 is the effective focal length of the first lens L1, F2 is the effective focal length of the second lens L2, F4 is the effective focal length of the fourth lens L4, F6 is the effective focal length of the sixth lens L6, and F is the effective focal length of the optical lens 100. Specifically, F1 / F can be -2.9, -2.5, -2, -1.5, -1.1, etc.; F2 / F can be -14.9, -11, -9, -7, -6, -5, -4, or -3, etc.; F4 / F can be -1.9, -1.8, -1.7, -1.6, -1.5, -1.4, -1.2, or -1.1, etc.; F6 / F can be -9.9, -9, -8, -7, -6, -5, -4, or -3, etc. By reasonably configuring the ratio of the focal length of the first lens L1, the focal length of the second lens L2, the effective focal length of the fourth lens L4, and the focal length of the sixth lens L6 to the focal length of the optical lens 100, excessive spherical aberration can be avoided and aberrations can be effectively corrected, thereby improving the imaging quality of the optical lens 100.

[0065] In some embodiments, the optical lens 100 satisfies the relation: -6 < F1 / CT1 < -2. F1 is the effective focal length of the first lens L1, and CT1 is the thickness of the first lens L1 on the optical axis O. Specifically, F1 / CT1 can be -5.9, -5.5, -5, -4.5, -4, -3.5, -3, or -2.1, etc. Since the first lens L1 is closest to the object side, setting the first lens L1 as a lens with negative refractive power can enable the incident light rays entering the optical lens 100 at large angles to enter smoothly, and then the field angle range of the optical lens 100 is expanded, ensuring the imaging quality of the optical lens 100.

[0066] In some embodiments, the optical lens 100 satisfies the relation: F3 / CT3 < 15. F3 is the effective focal length of the third lens L3, and CT3 is the thickness of the third lens L3 on the optical axis O. Specifically, F3 / CT3 can be 14.9, 11, 9, 7, 5, 4, 3, or 2, etc. Since both the first lens L1 and the second lens L2 have negative refractive powers, therefore, setting a third lens L3 with positive refractive power is beneficial to correcting peripheral aberration and improving the imaging resolution of the optical lens 100. Limiting the ratio of the focal length of the third lens L3 to the thickness of the third lens L3 within a certain range is beneficial to reducing the sensitivity of the thickness tolerance of the third lens L3, reducing the processing difficulty of the third lens L3, improving the assembly qualification rate of the optical lens 100, and further reducing the production cost.

[0067] In some embodiments, the optical lens 100 satisfies the relation: F4 / CT4 > -15. F4 is the effective focal length of the fourth lens L4, and CT4 is the thickness of the fourth lens L4 on the optical axis O. Specifically, F4 / CT4 can be -14.9, -13, -11, -9, -7, -5, or -3, etc. When the optical lens 100 satisfies the above relation, it can reasonably configure the fourth lens L4, effectively control the deflection angle of the light rays in the optical lens 100, and further reduce the sensitivity of the optical lens 100 and improve the resolution.

[0068] In some embodiments, the optical lens 100 satisfies the relation: 1 < F5 / CT5 < 2. 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. Specifically, F5 / CT5 can be 1.01, 1.1, 1.3, 1.5, 1.7, or 1.9, etc. When the optical lens 100 satisfies the above conditional expression, it can reasonably configure the ratio of the effective focal length to the central thickness of the fifth lens L5, so that the central thickness of the fifth lens L5 is neither too thin nor too thick, which is beneficial to reducing the tolerance sensitivity of the fifth lens L5, and at the same time enabling the fifth lens L5 to effectively correct the aberration generated by the refracted light rays of each lens on the object side, and improving the imaging analysis ability of the optical lens 100.

[0069] In some embodiments, the optical lens 100 satisfies the relational expression: -25 < F6 / CT6 < -5. Here, F6 is the effective focal length of the sixth lens L6, and CT6 is the thickness of the sixth lens L6 on the optical axis O. Specifically, F6 / CT6 can be -24.9, -20, -16, -12, -8, -7, or -5.1, etc. When the optical lens 100 satisfies the above conditional expression, on the one hand, it can avoid the astigmatism that is difficult to correct due to the excessive effective focal length of the sixth lens L6, thereby improving the imaging quality of the optical lens 100; on the other hand, it can also better control the central thickness of the sixth lens L6 within a reasonable range, which is beneficial to both the lightweight design of the optical lens 100 and the molding and processing of the sixth lens L6.

[0070] In some embodiments, the optical lens 100 satisfies the following relationships: 2 < R11 / R12 < 3; 1 < R22 / R21 < 2; -3 < R32 / R31 < -1; 1 < R41 / R42 < 3; -3 < R52 / R51 < -1; |R61 / R62| < 30. Here, R11 is the curvature radius of the object side surface S1 of the first lens L1 at the optical axis O, R12 is the curvature radius of the image side surface S2 of the first lens L1 at the optical axis O, R21 is the curvature radius of the object side surface S3 of the second lens L2 at the optical axis O, R22 is the curvature radius of the image side surface S4 of the second lens L2 at the optical axis O, R32 is the curvature radius of the image side surface S6 of the third lens L3 at the optical axis O, R31 is the curvature radius of the object side surface S5 of the third lens L3 at the optical axis O, R41 is the curvature radius of the object side surface S7 of the fourth lens L4 at the optical axis O, R42 is the curvature radius of the image side surface S8 of the fourth lens L4 at the optical axis O, R52 is the curvature radius of the image side surface S10 of the fifth lens L5 at the optical axis O, R51 is the curvature radius of the object side surface S9 of the fifth lens L5 at the optical axis O, R61 is the curvature radius of the object side surface S11 of the sixth lens L6 at the optical axis O, and R62 is the curvature radius of the image side surface S12 of the sixth lens L6 at the optical axis O. Specifically, R11 / R12 can be 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.75, 2.9, etc.; R22 / R21 can be 1.1, 1.3, 1.5, 1.7, 1.9, etc.; R32 / R31 can be -2.9, -2.5, -2, -1.5, -1.3, -1.1, etc.; R41 / R42 can be 1.1, 1.3, 1.6, 1.9, 2, 2.3, 2.5, 2.9, etc.; R52 / R51 can be -2.9, -2.6, -2.3, -2.1, -1.90, -1.5, -1.1, etc.; |R61 / R62| can be 2.0, 4, 8, 10, 15, 20, 25, 29, etc. By reasonably configuring the curvature radii of the object side surfaces and image side surfaces of the first lens L1 to the sixth lens L6, the refractive power distribution of each lens of the optical lens 100 in the direction perpendicular to the optical axis O can be made uniform, significantly correcting the distortion and aberration generated by the front lens, and also reducing the sensitivity of the performance change of the optical lens 100, which is beneficial to improving the product yield.

[0071] The surface profiles of each aspherical lens can be defined by, but not limited to, the following aspherical formula:

[0072]

[0073] Where Z is the distance from the corresponding point on the aspherical surface to the plane tangent to the vertex of the surface, r is the distance from any point on the aspherical surface to the optical axis, c is the curvature of the vertex of the aspherical surface, c = 1 / Y, Y is the radius of curvature (i.e., the paraxial curvature c is the reciprocal of the radius of Y in Table 1), k is the conic constant, and Ai is the coefficient corresponding to the i-th higher-order term in the aspherical surface shape formula.

[0074] The optical lens 100 of this embodiment will be described in detail below with reference to specific parameters.

[0075] First Embodiment

[0076] The structural schematic diagram of the optical lens 100 disclosed in the first embodiment of this application is shown below. Figure 1 As shown, the optical lens 100 includes a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a filter IR, and a protective glass CG arranged sequentially along the optical axis O from the object side to the image side.

[0077] 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.

[0078] Furthermore, the object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is concave near the optical axis O; the object-side surface S3 of the second lens L2 is concave near the optical axis O, and the image-side surface S4 of the second lens L2 is convex near the optical axis O; the object-side surface S5 of the third lens L3 is convex near the optical axis O, and the image-side surface S6 of the third lens L3 is convex near the optical axis O; the object-side surface S7 of the fourth lens L4 is convex near the optical axis O, and the image-side surface S8 of the fourth lens L4 is concave near the optical axis O; the object-side surface S9 of the fifth lens L5 is convex near the optical axis O, and the image-side surface S10 of the fifth lens L5 is convex near the optical axis O; the object-side surface S11 of the sixth lens L6 is concave near the optical axis O, and the image-side surface S12 of the sixth lens L6 is concave near the optical axis O.

[0079] Specifically, along the optical axis O of the optical lens 100, the elements from the object side to the image side are arranged sequentially according to the order of the elements in Table 1a from top to bottom. In the same lens, the surface with the smaller surface number is the object side of the lens, and the surface with the larger surface number is the image side of the lens. For example, surface numbers 1 and 2 correspond to the object side S1 and image side S2 of the first lens L1, respectively. The Y-radius in Table 1a is the radius of curvature of the object side or image side of the corresponding surface number at the optical axis O. The first value in the "thickness" parameter column of the lens is the thickness of the lens on the optical axis O, and the second value is the distance from the image side of the lens to the next surface on the optical axis O. The value of the stop STO in the "Thickness" parameter column represents the distance from the stop STO to the vertex of the next surface (the vertex refers to the intersection of the surface and the optical axis O) on the optical axis O. By default, the direction from the object side S1 of the first lens L1 to the image side of the last lens is the positive direction of the optical axis O. When this value is negative, it indicates that the stop STO is set on the image side of the vertex of the next surface. If the thickness of the stop STO is positive, the stop STO is on the object side of the vertex of the next surface. It can be understood that the units of Y radius, thickness, and effective focal length in Table 1a are all mm. And the reference wavelength for the refractive index, Abbe number, and effective focal length of each lens in Table 1a is 588nm.

[0080] In the first embodiment, the object-side surface and image-side surface of the second lens L2, the third lens L3 and the sixth lens L6 are aspherical. Table 1b gives the conic constant k and higher-order coefficients A4, A6, A8, A10, A12, A14 and A16 that can be used for each aspherical mirror in the first embodiment.

[0081] Table 1a

[0082]

[0083]

[0084] Table 1b

[0085]

[0086] Please see Figure 2 (A) in the middle Figure 2 Figure (A) in section 2 shows longitudinal spherical aberration diagrams of the optical lens 100 in the first embodiment at wavelengths of 588 nm, 656 nm, and 486 nm. The horizontal axis along the X-axis represents the focus shift in mm, and the vertical axis along the Y-axis represents the normalized field of view. As can be seen from Figure (A) in section 2, the spherical aberration values ​​of the optical lens 100 in the first embodiment are better, indicating that the imaging quality of the optical lens 100 in this embodiment is better. Please refer to... Figure 2 (B) in the middle Figure 2Figure (B) shows an astigmatism diagram of the optical lens 100 in the first embodiment at a wavelength of 588 nm. The horizontal axis along the X-axis represents the focus shift in mm, and the vertical axis along the Y-axis represents the field of view in degrees. In the astigmatism diagram, T represents the curvature of the imaging plane IMG in the sub-arc direction, and S represents the curvature of the imaging plane IMG in the sagittal direction. Figure 2 As can be seen in (B) above, the astigmatism of optical lens 100 is well compensated at this wavelength. Please refer to [link / reference]. Figure 2 (C) in the middle, Figure 2 Figure (C) shows the distortion curve of the optical lens 100 in the first embodiment at a wavelength of 588 nm. The horizontal axis along the X-axis represents distortion, and the vertical axis along the Y-axis represents the field of view, in degrees (deg). Figure 2 As can be seen from (C), the distortion of the optical lens 100 is well corrected at this wavelength.

[0087] Second Embodiment

[0088] The structural schematic diagram of the optical lens 100 disclosed in the second embodiment of this application is shown below. Figure 3 As shown, the optical lens 100 includes a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a filter IR, and a protective glass CG arranged sequentially along the optical axis O from the object side to the image side.

[0089] Furthermore, the object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is concave near the optical axis O; the object-side surface S3 of the second lens L2 is concave near the optical axis O, and the image-side surface S4 of the second lens L2 is convex near the optical axis O; the object-side surface S5 of the third lens L3 is convex near the optical axis O, and the image-side surface S6 of the third lens L3 is convex near the optical axis O; the object-side surface S7 of the fourth lens L4 is convex near the optical axis O, and the image-side surface S8 of the fourth lens L4 is concave near the optical axis O; the object-side surface S9 of the fifth lens L5 is convex near the optical axis O, and the image-side surface S10 of the fifth lens L5 is convex near the optical axis O; the object-side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image-side surface S12 of the sixth lens L6 is concave near the optical axis O.

[0090] Other parameters in the second embodiment are given in Table 2a below, and the definitions of each parameter can be derived from the description of the foregoing embodiments, and will not be repeated here. It is understood that the units for the Y-radius, thickness, and effective focal length in Table 2a are all mm. Furthermore, the reference wavelength for the refractive index, Abbe number, and effective focal length of each lens in Table 2a is 588 nm.

[0091] In the second embodiment, the object-side surface and image-side surface of the second lens L2, the third lens L3 and the sixth lens L6 are all aspherical. Table 2b gives the conic constant k and higher-order coefficients A4, A6, A8, A10, A12, A14 and A16 that can be used for each aspherical mirror in the second embodiment.

[0092] Table 2a

[0093]

[0094] Table 2b

[0095]

[0096] Please see Figure 4 ,Depend on Figure 4 As can be seen from (A) the longitudinal spherical aberration diagram, (B) the astigmatism diagram, and (C) the distortion curve diagram, in the second embodiment, the longitudinal spherical aberration, astigmatism, and distortion of the optical lens 100 are all well controlled, thus the optical lens 100 of this embodiment has good imaging quality. Furthermore, regarding... Figure 4 (A) Figure 4 (B) and Figure 4 The wavelengths corresponding to each curve in (C) can be referred to in the first embodiment regarding... Figure 2 (A) in the middle Figure 2 (B) in the middle Figure 2 The content described in (C) will not be repeated here.

[0097] Third Embodiment

[0098] The structural schematic diagram of the optical lens 100 disclosed in the third embodiment of this application is shown below. Figure 5 As shown, the optical lens 100 includes a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a filter IR, and a protective glass CG arranged sequentially along the optical axis O from the object side to the image side.

[0099] Furthermore, the object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is concave near the optical axis O; the object-side surface S3 of the second lens L2 is concave near the optical axis O, and the image-side surface S4 of the second lens L2 is convex near the optical axis O; the object-side surface S5 of the third lens L3 is convex near the optical axis O, and the image-side surface S6 of the third lens L3 is convex near the optical axis O; the object-side surface S7 of the fourth lens L4 is convex near the optical axis O, and the image-side surface S8 of the fourth lens L4 is concave near the optical axis O; the object-side surface S9 of the fifth lens L5 is convex near the optical axis O, and the image-side surface S10 of the fifth lens L5 is convex near the optical axis O; the object-side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image-side surface S12 of the sixth lens L6 is concave near the optical axis O.

[0100] Other parameters in the third embodiment are given in Table 3a below, and the definitions of each parameter can be derived from the description of the foregoing embodiments, and will not be repeated here. It is understood that the units for the Y-radius, thickness, and effective focal length in Table 3a are all mm. Furthermore, the reference wavelength for the refractive index, Abbe number, and effective focal length of each lens in Table 3a is 588 nm.

[0101] In the third embodiment, the object-side surface and image-side surface of the second lens L2, the third lens L3 and the sixth lens L6 are all aspherical. Table 3b gives the conic constant k and higher-order coefficients A4, A6, A8, A10, A12, A14 and A16 that can be used for each aspherical mirror in the third embodiment.

[0102] Table 3a

[0103]

[0104] Table 3b

[0105]

[0106]

[0107] Please see Figure 6 ,Depend on Figure 6 As can be seen from (A) the longitudinal spherical aberration diagram, (B) the astigmatism diagram, and (C) the distortion curve diagram, in the third embodiment, the longitudinal spherical aberration, astigmatism, and distortion of the optical lens 100 are all well controlled, thus the optical lens 100 of this embodiment has good imaging quality. Furthermore, regarding... Figure 6 (A) Figure 6 (B) and Figure 6 The wavelengths corresponding to each curve in (C) can be referred to in the first embodiment regarding... Figure 2 (A) in the middle Figure 2 (B) in the middle Figure 2The content described in (C) will not be repeated here.

[0108] Fourth embodiment

[0109] The structural schematic diagram of the optical lens 100 disclosed in the fourth embodiment of this application is shown below. Figure 7 As shown, the optical lens 100 includes a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a filter IR, and a protective glass CG arranged sequentially along the optical axis O from the object side to the image side.

[0110] Furthermore, the object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is concave near the optical axis O; the object-side surface S3 of the second lens L2 is concave near the optical axis O, and the image-side surface S4 of the second lens L2 is convex near the optical axis O; the object-side surface S5 of the third lens L3 is convex near the optical axis O, and the image-side surface S6 of the third lens L3 is convex near the optical axis O; the object-side surface S7 of the fourth lens L4 is convex near the optical axis O, and the image-side surface S8 of the fourth lens L4 is concave near the optical axis O; the object-side surface S9 of the fifth lens L5 is convex near the optical axis O, and the image-side surface S10 of the fifth lens L5 is convex near the optical axis O; the object-side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image-side surface S12 of the sixth lens L6 is concave near the optical axis O.

[0111] The other parameters in the fourth embodiment are given in Table 4a below, and the definitions of each parameter can be derived from the descriptions of the foregoing embodiments, and will not be repeated here. It is understood that the units for the Y-radius, thickness, and effective focal length in Table 4a are all mm. Furthermore, the reference wavelength for the refractive index, Abbe number, and effective focal length of each lens in Table 4a is 588 nm.

[0112] In the fourth embodiment, the object-side surface and image-side surface of the second lens L2, the third lens L3, and the sixth lens L6 are all aspherical. Table 4b gives the conic constant k and higher-order coefficients A4, A6, A8, A10, A12, A14, and A16 that can be used for each aspherical mirror in the fourth embodiment.

[0113] Table 4a

[0114]

[0115]

[0116] Table 4b

[0117]

[0118] Please see Figure 8 ,Depend on Figure 8 As can be seen from (A) the longitudinal spherical aberration diagram, (B) the astigmatism diagram, and (C) the distortion curve diagram, in the fourth embodiment, the longitudinal spherical aberration, astigmatism, and distortion of the optical lens 100 are all well controlled, thus the optical lens 100 of this embodiment has good imaging quality. Furthermore, regarding... Figure 8 (A) Figure 8 (B) and Figure 8 The wavelengths corresponding to each curve in (C) can be referred to in the first embodiment regarding... Figure 2 (A) in the middle Figure 2 (B) in the middle Figure 2 The content described in (C) will not be repeated here.

[0119] Fifth embodiment

[0120] The structural schematic diagram of the optical lens 100 disclosed in the fifth embodiment of this application is shown below. Figure 9 As shown, the optical lens 100 includes a first lens L1, a second lens L2, a third lens L3, an aperture stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a filter IR, and a protective glass CG arranged sequentially along the optical axis O from the object side to the image side.

[0121] Furthermore, the object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is concave near the optical axis O; the object-side surface S3 of the second lens L2 is concave near the optical axis O, and the image-side surface S4 of the second lens L2 is convex near the optical axis O; the object-side surface S5 of the third lens L3 is convex near the optical axis O, and the image-side surface S6 of the third lens L3 is convex near the optical axis O; the object-side surface S7 of the fourth lens L4 is convex near the optical axis O, and the image-side surface S8 of the fourth lens L4 is concave near the optical axis O; the object-side surface S9 of the fifth lens L5 is convex near the optical axis O, and the image-side surface S10 of the fifth lens L5 is convex near the optical axis O; the object-side surface S11 of the sixth lens L6 is concave near the optical axis O, and the image-side surface S12 of the sixth lens L6 is concave near the optical axis O.

[0122] Other parameters in the fifth embodiment are given in Table 4a below, and the definitions of each parameter can be derived from the descriptions of the foregoing embodiments, and will not be repeated here. It is understood that the units for the Y-radius, thickness, and effective focal length in Table 4a are all mm. Furthermore, the reference wavelength for the refractive index, Abbe number, and effective focal length of each lens in Table 5a is 588 nm.

[0123] In the fifth embodiment, the object-side surface and image-side surface of the second lens L2, the third lens L3, and the sixth lens L6 are all aspherical. Table 5b gives the conic constant k and higher-order coefficients A4, A6, A8, A10, A12, A14, and A16 that can be used for each aspherical mirror in the fifth embodiment.

[0124] Table 5a

[0125]

[0126]

[0127] Table 5b

[0128]

[0129] Please see Figure 10 ,Depend on Figure 10 As can be seen from (A) the longitudinal spherical aberration diagram, (B) the astigmatism diagram, and (C) the distortion curve diagram, in the fifth embodiment, the longitudinal spherical aberration, astigmatism, and distortion of the optical lens 100 are all well controlled, thus the optical lens 100 of this embodiment has good imaging quality. Furthermore, regarding... Figure 10 (A) Figure 10 (B) and Figure 10 The wavelengths corresponding to each curve in (C) can be referred to in the first embodiment regarding... Figure 2 (A) in the middle Figure 2 (B) in the middle Figure 2 The content described in (C) will not be repeated here.

[0130] Sixth Embodiment

[0131] The structural schematic diagram of the optical lens 100 disclosed in the sixth embodiment of this application is shown below. Figure 11 As shown, the optical lens 100 includes a first lens L1, a second lens L2, a third lens L3, an aperture stop STO, a fourth lens L4, a fifth lens L5, a filter IR, a sixth lens L6, and a protective glass CG arranged sequentially along the optical axis O from the object side to the image side.

[0132] Furthermore, the object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is concave near the optical axis O; the object-side surface S3 of the second lens L2 is concave near the optical axis O, and the image-side surface S4 of the second lens L2 is convex near the optical axis O; the object-side surface S5 of the third lens L3 is convex near the optical axis O, and the image-side surface S6 of the third lens L3 is convex near the optical axis O; the object-side surface S7 of the fourth lens L4 is convex near the optical axis O, and the image-side surface S8 of the fourth lens L4 is concave near the optical axis O; the object-side surface S9 of the fifth lens L5 is convex near the optical axis O, and the image-side surface S10 of the fifth lens L5 is convex near the optical axis O; the object-side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image-side surface S12 of the sixth lens L6 is concave near the optical axis O.

[0133] Other parameters in the sixth embodiment are given in Table 6a below, and the definitions of each parameter can be derived from the descriptions of the foregoing embodiments, and will not be repeated here. It is understood that the units for the Y-radius, thickness, and effective focal length in Table 6a are all mm. Furthermore, the reference wavelength for the refractive index, Abbe number, and effective focal length of each lens in Table 6a is 588 nm.

[0134] In the sixth embodiment, the object-side surface and image-side surface of the second lens L2, the third lens L3 and the sixth lens L6 are all aspherical. Table 6b gives the conic constant k and higher-order coefficients A4, A6, A8, A10, A12, A14 and A16 that can be used for each aspherical mirror in the sixth embodiment.

[0135] Table 6a

[0136]

[0137] Table 6b

[0138]

[0139] Please see Figure 12 ,Depend on Figure 12 As can be seen from (A) the longitudinal spherical aberration diagram, (B) the astigmatism diagram, and (C) the distortion curve diagram, in the sixth embodiment, the longitudinal spherical aberration, astigmatism, and distortion of the optical lens 100 are all well controlled, thus the optical lens 100 of this embodiment has good imaging quality. Furthermore, regarding... Figure 12 (A) Figure 12 (B) and Figure 12 The wavelengths corresponding to each curve in (C) can be referred to in the first embodiment regarding... Figure 2 (A) in the middle Figure 2 (B) in the middle Figure 2 The content described in (C) will not be repeated here.

[0140] Seventh Embodiment

[0141] The structural schematic diagram of the optical lens 100 disclosed in the seventh embodiment of this application is shown below. Figure 13 As shown, the optical lens 100 includes a first lens L1, a second lens L2, a third lens L3, an aperture stop STO, a fourth lens L4, a fifth lens L5, a filter IR, a sixth lens L6, and a protective glass CG arranged sequentially along the optical axis O from the object side to the image side.

[0142] Furthermore, the object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is concave near the optical axis O; the object-side surface S3 of the second lens L2 is concave near the optical axis O, and the image-side surface S4 of the second lens L2 is convex near the optical axis O; the object-side surface S5 of the third lens L3 is convex near the optical axis O, and the image-side surface S6 of the third lens L3 is convex near the optical axis O; the object-side surface S7 of the fourth lens L4 is convex near the optical axis O, and the image-side surface S8 of the fourth lens L4 is concave near the optical axis O; the object-side surface S9 of the fifth lens L5 is convex near the optical axis O, and the image-side surface S10 of the fifth lens L5 is convex near the optical axis O; the object-side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image-side surface S12 of the sixth lens L6 is concave near the optical axis O.

[0143] Other parameters in the seventh embodiment are given in Table 7a below, and the definitions of each parameter can be derived from the descriptions of the foregoing embodiments, and will not be repeated here. It is understood that the units for the Y-radius, thickness, and effective focal length in Table 7a are all mm. Furthermore, the reference wavelength for the refractive index, Abbe number, and effective focal length of each lens in Table 7a is 588 nm.

[0144] In the seventh embodiment, the object-side surface and image-side surface of the second lens L2, the third lens L3, and the sixth lens L6 are all aspherical. Table 7b gives the conic constant k and higher-order coefficients A4, A6, A8, A10, A12, A14, and A16 that can be used for each aspherical mirror in the sixth embodiment.

[0145] Table 7a

[0146]

[0147] Table 7b

[0148]

[0149]

[0150] Please see Figure 14 ,Depend on Figure 14As can be seen from (A) the longitudinal spherical aberration diagram, (B) the astigmatism diagram, and (C) the distortion curve diagram, in the seventh embodiment, the longitudinal spherical aberration, astigmatism, and distortion of the optical lens 100 are all well controlled, thus the optical lens 100 of this embodiment has good imaging quality. Furthermore, regarding... Figure 14 (A) Figure 14 (B) and Figure 14 The wavelengths corresponding to each curve in (C) can be referred to in the first embodiment regarding... Figure 2 (A) in the middle Figure 2 (B) in the middle Figure 2 The content described in (C) will not be repeated here.

[0151] Eighth embodiment

[0152] The structural schematic diagram of the optical lens 100 disclosed in the eighth embodiment of this application is shown below. Figure 15 As shown, the optical lens 100 includes a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a filter IR, a sixth lens L6, and a protective glass CG arranged sequentially along the optical axis O from the object side to the image side.

[0153] Furthermore, the object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is concave near the optical axis O; the object-side surface S3 of the second lens L2 is concave near the optical axis O, and the image-side surface S4 of the second lens L2 is convex near the optical axis O; the object-side surface S5 of the third lens L3 is convex near the optical axis O, and the image-side surface S6 of the third lens L3 is convex near the optical axis O; the object-side surface S7 of the fourth lens L4 is convex near the optical axis O, and the image-side surface S8 of the fourth lens L4 is concave near the optical axis O; the object-side surface S9 of the fifth lens L5 is convex near the optical axis O, and the image-side surface S10 of the fifth lens L5 is convex near the optical axis O; the object-side surface S11 of the sixth lens L6 is concave near the optical axis O, and the image-side surface S12 of the sixth lens L6 is concave near the optical axis O.

[0154] Other parameters in the eighth embodiment are given in Table 8a below, and the definitions of each parameter can be derived from the descriptions of the foregoing embodiments, and will not be repeated here. It is understood that the units for the Y-radius, thickness, and effective focal length in Table 8a are all mm. Furthermore, the reference wavelength for the refractive index, Abbe number, and effective focal length of each lens in Table 8a is 588 nm.

[0155] In the eighth embodiment, the object-side surface and image-side surface of the second lens L2, the third lens L3 and the sixth lens L6 are aspherical. Table 8b gives the conic constant k and higher-order coefficients A4, A6, A8, A10, A12, A14 and A16 that can be used for each aspherical mirror in the eighth embodiment.

[0156] Table 8a

[0157]

[0158] Table 8b

[0159]

[0160] Please see Figure 16 ,Depend on Figure 16 As can be seen from (A) the longitudinal spherical aberration diagram, (B) the astigmatism diagram, and (C) the distortion curve diagram, in the eighth embodiment, the longitudinal spherical aberration, astigmatism, and distortion of the optical lens 100 are all well controlled, thus the optical lens 100 of this embodiment has good imaging quality. Furthermore, regarding... Figure 16 (A) Figure 16 (B) and Figure 16 The wavelengths corresponding to each curve in (C) can be referred to in the first embodiment regarding... Figure 2 (A) in the middle Figure 2 (B) in the middle Figure 2 The content described in (C) will not be repeated here.

[0161] Table 9 shows the FOV, TTL / H, TTL / F, FOV / FNO, H / F, (R12-R21) / CT12, R12 / R21, F2 / CT2, F3 / F, SD21 / SD22, SD11 / H, SD11 / SD12, CT1 / CT2, CT3 / CT34, F2 / F1, CT5 / CT4, ET5 / ET4, VD4, VD5, and R11 values ​​in the optical lenses 100 of the first to eighth embodiments. The values ​​of / (R12+CT1), R22 / (R21-CT2), (R11-R22) / CT14, FOV*F / H, F6 / F5, FNO, F1 / F, F2 / F, F4 / F, F6 / F, F1 / CT1, F3 / CT3, F4 / CT4, F5 / CT5, F6 / CT6, R11 / R12, R22 / R21, R32 / R31, R41 / R42, R52 / R51 and |R61 / R62|.

[0162] Table 9

[0163]

[0164]

[0165] Please see Figure 17This application also discloses a camera module 200, which includes a photosensitive chip 201 and the aforementioned optical lens 100. The photosensitive chip 201 is disposed on the image side of the optical lens 100. The optical lens 100 is used to receive the light signal of the subject and project it onto the photosensitive chip 201. The photosensitive chip 201 is used to convert the light signal corresponding to the subject into an image signal, which will not be elaborated here. The camera module with the optical lens 100 can achieve a miniaturized design of the optical lens 100, while also enabling the optical lens 100 to have a large field of view.

[0166] Please see Figure 18 This application also discloses a terminal device 300, which includes a housing 301 and the aforementioned camera module 200, with the camera module 200 disposed within the housing 301. The terminal device 300 can be, but is not limited to, a mobile phone, tablet computer, laptop computer, smartwatch, monitor, etc. It is understood that the electronic device 300 with the aforementioned camera module 200 also possesses all the technical effects of the aforementioned optical lens 100, namely, it can achieve a miniaturized design of the optical lens 100 while simultaneously enabling the optical lens 100 to have a large field of view.

[0167] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. An optical lens, characterized in that, There are 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 has 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 has 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 has positive refractive power. Both the object side surface and the image side surface of the third lens are convex near the optical axis. The fourth lens has 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 has positive refractive power. Both the object side surface and the image side surface of the fifth lens are convex near the optical axis. The sixth lens has negative refractive power. The image side surface of the sixth lens is concave near the optical axis. The optical lens satisfies the following relational expressions: 65° < FOV < 75°, 3.5 < TTL / H < 4.2; Where, FOV is the maximum field of view angle of the optical lens, TTL is the distance from the object side surface of the first lens to the imaging surface of the optical lens on the optical axis, and H is the image height corresponding to the maximum field of view angle of the optical lens.

2. The optical lens as described in claim 1, characterized in that, The optical lens satisfies the following relational expressions: 4 < TTL / F < 5.5, and / or, 40° < FOV / FNO < 45°, and / or, 1.1 < H / F < 1.3; Where, F is the effective focal length of the optical lens, and FNO is the aperture number of the optical lens.

3. The optical lens as described in claim 1, characterized in that, The optical lens satisfies the following relational expressions: 2 < (R12 - R21) / CT12 < 3, and / or, -1.1 < R12 / R21 < -0.7, and / or, F2 / CT2 > -20, and / or, 1 < F3 / F < 2; Where, R12 is the curvature radius of the image side surface of the first lens on the optical axis, R21 is the curvature radius of the object side surface of the second lens on the optical axis, CT12 is the distance between the image side surface of the first lens and the object side surface of the second lens on the optical axis, F2 is the effective focal length of the second lens, CT2 is the thickness of the second lens on the optical axis, F3 is the effective focal length of the third lens, and F is the effective focal length of the optical lens.

4. The optical lens as described in claim 1, characterized in that, The optical lens satisfies the following relational expressions: 0.85 < SD21 / SD22 < 0.95, and / or, 1.4 < SD11 / H < 1.8, and / or, 1.4 < SD11 / SD12 < 2; Where, SD21 is the maximum effective aperture of the object side surface of the second lens, SD22 is the maximum effective aperture of the image side surface of the second lens, SD11 is the maximum effective aperture of the object side surface of the first lens, and SD12 is the maximum effective aperture of the image side surface of the first lens.

5. The optical lens as described in claim 1, characterized in that, The optical lens satisfies the following relational expressions: 0.9 < CT1 / CT2 < 2, and / or, CT3 / CT34 < 4, and / or, 1 < F2 / F1 < 6; Where, CT1 is the thickness of the first 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, CT34 is the distance on the optical axis between the image side of the third lens and the object side of the fourth lens, F2 is the effective focal length of the second lens, and F1 is the effective focal length of the first lens.

6. The optical lens as described in claim 1, characterized in that, The optical lens satisfies the following relational expressions: 1 < CT5 / CT4 < 8, and / or, 0.5 < ET5 / ET4 < 2.5, and / or, VD4 < 21, and / or, VD5 > 65; Where, CT5 is the thickness of the fifth lens on the optical axis, CT4 is the thickness of the fourth lens on the optical axis, ET5 is the distance on the optical axis between the maximum effective aperture of the object side of the fifth lens and the maximum effective aperture of the image side of the fifth lens, ET4 is the distance on the optical axis between the maximum effective aperture of the object side of the fourth lens and the maximum effective aperture of the image side of the fourth lens, VD4 is the Abbe number of the fourth lens, and VD5 is the Abbe number of the fifth lens.

7. The optical lens as described in claim 1, characterized in that, The optical lens satisfies the following conditional expressions: 1.1 < R11 / (R12 + CT1) < 1.6, and / or, 0.75 < R22 / (R21 - CT2) < 1.2, and / or, 1.4 < (R11 - R22) / CT14 < 2.2; Where, R11 is the curvature radius of the object side of the first lens at the optical axis, R12 is the curvature radius of the image side of the first lens at the optical axis, CT1 is the thickness of the first lens on the optical axis, R22 is the curvature radius of the image side of the second lens at the optical axis, R21 is the curvature radius of the object side of the second lens at the optical axis, CT2 is the thickness of the second lens on the optical axis, and CT14 is the distance between the intersection point of the object side of the first lens and the optical axis and the intersection point of the image side of the fourth lens and the optical axis.

8. The optical lens as described in claim 1, characterized in that, The optical lens satisfies the following conditional expressions: 48° < FOV*F / H < 65°, and / or, -7 < F6 / F5 < -3; Where, F is the effective focal length of the optical lens, F6 is the effective focal length of the sixth lens, and F5 is the effective focal length of the fifth lens.

9. A camera module, characterized in that, The imaging module includes a photosensitive chip and the optical lens according to any one of claims 1-8, 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