Optical lens, camera module and electronic device

Abstract

This application discloses an optical lens, a camera module, and an electronic device that can meet the requirements of miniaturization and high imaging quality, and can stably image under complex lighting conditions. The optical lens has six refractive lenses, which are arranged sequentially from the object side to the image side along the optical axis: the first lens has negative refractive power, and its object side is concave near the optical axis, and its image side is concave near the optical axis; the second lens has positive refractive power, and its object side is convex near the optical axis, and its image side is convex near the optical axis; the third lens has positive refractive power, and its object side is convex near the optical axis; the fourth lens has positive refractive power, and its object side is convex near the optical axis, and its image side is convex near the optical axis; the fifth lens has negative refractive power, and its object side is concave near the optical axis; the sixth lens has negative refractive power, and its image side is concave near the optical axis; the optical lens satisfies the following relationship: 30°≤FOV≤40°, 1≤CT4 / CT5≤1.4.

Description

Technical Field

[0001] This application relates to the field of optical imaging technology, specifically to an optical lens, a camera module, and an electronic device. Background Technology

[0002] With the rapid development of automotive intelligence, automotive optical lenses have become core components of driver assistance systems. Among them, Advanced Driving Assistant System (ADAS) lenses are a crucial application of imaging optical lenses, widely deployed within vehicle cabins. From real-time driver fatigue monitoring and identity verification to driver monitoring systems (DMS) providing driving safety warnings and intelligent cabin control, all rely on the imaging support of automotive ADAS lenses. The performance of these lenses directly impacts not only the accuracy of driver status recognition and identity verification but also driving safety.

[0003] Current automotive ADAS lenses not only need to break through towards higher resolution, but also need to meet the needs of different driving scenarios. However, existing automotive DMS optical lenses struggle to simultaneously meet the multiple technical requirements of miniaturized structural design and high-quality imaging. For example, while some optical lenses have achieved relatively miniaturized designs, their pixel resolution is low, failing to guarantee the accuracy of driver status and identity recognition. Other optical lenses, while possessing high imaging quality, have large lens diameters and bulky overall structures, making it difficult to meet users' miniaturization needs. Furthermore, most automotive ADAS lenses have poor adaptability to lighting conditions, making it difficult to achieve stable imaging in scenarios with alternating light and dark conditions, varying lighting, and low illumination inside the vehicle. Summary of the Invention

[0004] In view of the above, it is necessary to propose an optical lens, camera module and electronic device that can meet the requirements of miniaturization and high imaging quality, and can stably image under complex lighting conditions.

[0005] The first aspect of this application provides an optical lens comprising six refractive lenses, arranged sequentially along the optical axis from the object side to the image side: a first lens having negative refractive power, its object side being concave near the optical axis and its image side being concave near the optical axis; a second lens having positive refractive power, its object side being convex near the optical axis and its image side being convex near the optical axis; a third lens having positive refractive power, its object side being convex near the optical axis; and a fourth lens having positive refractive power, its object side being convex near the optical axis. The fourth lens has a convex surface at the optical axis, and its image-side surface is convex near the optical axis; the fifth lens has negative refractive power, and its object-side surface is concave near the optical axis; the sixth lens has negative refractive power, and its image-side surface is concave near the optical axis; the optical lenses satisfy the following relationships: 30°≤FOV≤40°, 1≤CT4 / CT5≤1.4; where FOV is the maximum field of view of the optical 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.

[0006] The aforementioned optical lens, along the optical axis from the object side to the image side, comprises: a first lens with negative refractive power, whose object-side and image-side surfaces are concave near the optical axis; a second lens with positive refractive power, whose object-side and image-side surfaces are convex near the optical axis, which is beneficial for receiving large-angle light rays incident on the first and second lenses, and the second lens can cooperate with the first lens to effectively control the distortion introduced by large-angle incident light rays, which is beneficial for improving the illumination of the edge field of view; a third lens with positive refractive power, whose object-side surface is convex near the optical axis, which can effectively converge the divergent light rays emitted by the first and second lenses, and can effectively correct the aberrations of the optical lens; and a fourth lens with positive refractive power, whose object-side and image-side surfaces are convex near the optical axis, which is beneficial for compressing the optical path and making the structure of the optical lens compact. The fifth lens has negative refractive power, and its object-side surface is concave near the optical axis. The fourth and fifth lenses allow light rays exiting the third lens to enter the sixth lens more smoothly, which is beneficial to improving the uniformity of illumination on the imaging surface. The sixth lens has negative refractive power, and its image-side surface is concave near the optical axis. This allows light rays entering from different angles to be gently deflected and converged on the imaging surface when passing through the sixth lens, which is beneficial to balancing the aberrations of the optical lens (such as simultaneously suppressing spherical aberration, chromatic aberration, field curvature, and astigmatism of the optical lens), thereby improving image quality. It also helps to improve the imaging capability of the optical lens under alternating light and dark conditions, at night, and complex lighting conditions. Thus, the optical lens can meet the miniaturization requirements while having good image quality and can stably image under complex lighting conditions.

[0007] Furthermore, by ensuring that the optical lens meets the FOV (Field of View) requirement of 30°≤FOV≤40°, the maximum field of view of the optical lens is controlled within a certain range. This allows the optical lens to have a larger field of view and a wider field of view, meeting the demand for a large field of view. This expands the shooting range of the optical lens, allowing it to acquire image information within a wider field of view. At the same time, it can effectively suppress edge aberrations, ensuring that the optical lens has good imaging quality and resolution from the center to the edge of the imaging surface, which is beneficial for further meeting users' demand for high imaging quality.

[0008] Furthermore, by ensuring that the optical lens satisfies 1≤CT4 / CT5≤1.4, the ratio of the thickness of the fourth lens on the optical axis to that of the fifth lens on the optical axis is controlled within a certain range. This facilitates a reasonable configuration of the center thickness ratio between the fourth and fifth lenses. While ensuring that the fourth lens has sufficient positive refractive power, it provides ample space for the fifth lens to effectively exert its negative refractive power. This allows light to be converged by the fourth lens and then diverged relatively smoothly by the fifth lens, which is beneficial for further improving the imaging quality of the optical lens. At the same time, a reasonable thickness ratio between the fourth and fifth lenses can also make the optical lens structure more compact, which helps reduce manufacturing difficulty and further shortens the overall optical length of the optical lens. This makes the six-element structure more compact and helps the optical lens meet the miniaturization requirements while maintaining good imaging quality.

[0009] A second aspect of this application provides a camera module, including: an optical lens as described above; and an image sensor disposed on the image side of the optical lens.

[0010] The aforementioned camera module includes the aforementioned optical lens, which can meet the requirements of miniaturization and high imaging quality, and can stably image under complex lighting conditions.

[0011] A third aspect of this application provides an electronic device, including: a housing; and the aforementioned camera module, wherein the camera module is mounted on the housing.

[0012] The aforementioned electronic device, including the aforementioned optical lens, can balance the requirements of miniaturization and high imaging quality, and can stably image under complex lighting conditions. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the optical lens disclosed in the first embodiment of this application.

[0014] 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.

[0015] Figure 3This is a schematic diagram of the structure of the optical lens disclosed in the second embodiment of this application.

[0016] 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.

[0017] Figure 5 This is a schematic diagram of the structure of the optical lens disclosed in the third embodiment of this application.

[0018] 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.

[0019] Figure 7 This is a schematic diagram of the structure of the optical lens disclosed in the fourth embodiment of this application.

[0020] 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.

[0021] Figure 9 This is a schematic diagram of the structure of the optical lens disclosed in the fifth embodiment of this application.

[0022] 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.

[0023] Figure 11 This is a schematic diagram of the structure of the camera module according to an embodiment of this application.

[0024] Figure 12 This is a schematic diagram of the structure of an electronic device according to an embodiment of this application.

[0025] Explanation of key component symbols: Optical lens 100, optical axis O, first lens L1, second lens L2, third lens L3, fourth lens L4, fifth lens L5, sixth lens L6, object side surface S1, S3, S5, S7, S9, S11, image side surface S2, S4, S6, S8, S10, S12, aperture STO, protective glass CG, imaging surface IMG, camera module 200, image sensor 201, electronic device 300, housing 301. Detailed Implementation

[0026] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0027] Please see Figure 1 This application provides an optical lens 100, which has six lenses with refractive power. Along the optical axis O from the object side to the image side, the lenses are 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 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 from the object side of the first lens L1, and finally forms an image on the imaging surface IMG of the optical lens 100.

[0028] The first lens L1 has negative refractive power, the second lens L2 has positive refractive power, the third lens L3 has positive refractive power, the fourth lens L4 has positive refractive power, the fifth lens L5 has negative refractive power, and the sixth lens L6 has negative refractive power. The object-side surface S1 of the first lens L1 is concave 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 convex near the optical axis O. The object-side surface S5 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 its image-side surface S8 is convex near the optical axis O. The object-side surface S9 of the fifth lens L5 is concave near the optical axis O. The image-side surface S12 of the sixth lens L6 is concave near the optical axis O.

[0029] The aforementioned optical lens 100, along the optical axis O from the object side to the image side, comprises: a first lens L1 with negative refractive power, its object-side surface S1 and its image-side surface S2 being concave near the optical axis O; a second lens L2 with positive refractive power, its object-side surface S3 and its image-side surface S4 being convex near the optical axis O, which is beneficial for receiving large-angle light rays incident on the first lens L1 and the second lens L2, and the second lens L2 can cooperate with the first lens L1 to effectively control the distortion introduced by large-angle incident light rays, which is beneficial for improving the illumination of the edge field of view; a third lens L3 with positive refractive power, its object-side surface S5 being convex near the optical axis O, which can effectively converge the divergent light rays emitted by the first lens L1 and the second lens L2, and can effectively correct the aberrations of the optical lens 100; and a fourth lens L4 with positive refractive power, its object-side surface S7 and its image-side surface S8 being convex near the optical axis O, which is beneficial for compressing the optical path and making the structure of the optical lens 100 more compact. The structure is compact; the fifth lens L5 has negative refractive power, and its object-side surface S9 is concave near the optical axis O; the fourth lens L4 and the fifth lens L5 enable the light rays emitted from the third lens L3 to enter the sixth lens L6 more smoothly, which is beneficial to improving the uniformity of illumination on the imaging surface IMG. The sixth lens L6 has negative refractive power, and its image-side surface S12 is concave near the optical axis O; it enables light rays incident from different angles to be gently deflected and converged on the imaging surface IMG when passing through the sixth lens L6, which is beneficial to balancing the aberrations of the optical lens 100 (e.g., simultaneously suppressing spherical aberration, chromatic aberration, field curvature and astigmatism of the optical lens 100), thereby improving the imaging quality. It also helps to improve the imaging capability of the optical lens 100 under alternating light and dark conditions, nighttime and complex lighting conditions, so that the optical lens 100 meets the miniaturization requirements while having good imaging quality and can stably image under complex lighting conditions.

[0030] Furthermore, by ensuring that the optical lens 100 satisfies 30°≤FOV≤40°, where FOV is the maximum field of view of the optical lens 100; for example, FOV can be 30°, 31°, 32°, 33°, 34°, 35°, 36°, 37°, 38°, 39°, 40°, etc.; by controlling the maximum field of view of the optical lens 100 within a certain range, it is beneficial for the optical lens 100 to have a larger field of view and a wider field of view, meeting the requirement of a large field of view, thereby expanding the shooting range of the optical lens 100, acquiring image information within a wider field of view, and effectively suppressing edge aberrations, so that the imaging surface IMG of the optical lens 100 has good imaging quality and resolution from the center to the edge, which is beneficial to further meet the user's demand for high imaging quality.

[0031] Furthermore, the optical lens 100 is made to satisfy 1≤CT4 / CT5≤1.4, where CT4 is the thickness of the fourth lens L4 on the optical axis O, and CT5 is the thickness of the fifth lens L5 on the optical axis O. For example, CT4 / CT5 can be 1.00, 1.02, 1.05, 1.10, 1.15, 1.20, 1.25, 1.30, 1.35, 1.40, etc. By controlling the ratio of the thickness of the fourth lens L4 on the optical axis O to the thickness of the fifth lens L5 on the optical axis O in the optical lens 100 within a certain range, it is beneficial to rationally configure the center thickness ratio of the fourth lens L4 and the fifth lens L5. While ensuring that the fourth lens L4 has sufficient positive refractive power, it provides sufficient space for the fifth lens L5 to effectively exert its negative refractive power, so that the light converged by the fourth lens L4 can be diverged relatively smoothly by the fifth lens L5, which is beneficial to further improve the imaging quality of the optical lens 100. At the same time, the reasonable thickness ratio between the fourth lens L4 and the fifth lens L5 can also make the structure of the optical lens 100 compact, which is beneficial to reducing the manufacturing difficulty, further shortening the total optical length of the optical lens 100, making the six-element structure more compact, and enabling the optical lens 100 to meet the miniaturization requirements while having good imaging quality.

[0032] In some embodiments, when the optical lens 100 is applied to electronic devices such as automotive lenses and monitors, the materials of the first lens L1, second lens L2, third lens L3, fourth lens L4, fifth lens L5, and sixth lens L6 can all be glass. This allows the optical lens 100 to achieve good image quality while reducing the impact of temperature on the lenses. Furthermore, it is understood that when the optical lens 100 is applied to electronic devices such as mobile phones, tablets, smartwatches, thumb cameras, and drones, the materials of the first lens L1, second lens L2, third lens L3, fourth lens L4, fifth lens L5, and sixth lens L6 can all be plastic to reduce the overall weight of the optical lens 100. Of course, among the multiple lenses of the optical lens 100, some lenses can be made of glass, and some can be made of plastic. This ensures that while reducing the impact of temperature on the lenses to achieve good image quality, it also reduces the processing cost and weight of the lenses, thereby reducing the processing cost and overall weight of the optical lens 100.

[0033] In some embodiments, spherical lenses are considered to have the advantages of simple manufacturing process and low production cost, and the ability to flexibly design the surface shape of the lens to improve the imaging resolution of the 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, the optical lens 100 does not need to have too many lenses to achieve good image quality, which is beneficial for shortening the length of the optical lens 100. Based on this, any one or a combination of two of the aforementioned first lens L1, second lens L2, third lens L3, fourth lens L4, fifth lens L5, and sixth lens L6 (e.g., second lens L2 and sixth lens L6, or first lens L1 and second lens L2) can be aspherical lenses. This aspherical design not only improves the lens's manufacturability and facilitates surface design, but also allows for more flexible design of the object-side or image-side of the lens. 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 can achieve good image quality and high resolution without requiring an excessive number of lenses, while also shortening the length of the optical lens 100, thus meeting the miniaturization requirements of the optical lens 100. It is understood that in other embodiments, the surfaces of each lens in the optical lens 100 can be all spherical, all aspherical, or any combination of spherical and aspherical surfaces, depending on actual needs. Therefore, this embodiment does not impose specific limitations.

[0034] In some embodiments, the optical lens 100 further includes an aperture stop STO, which may be an aperture stop and / or a field stop. For example, the aperture stop STO may be an aperture stop, or a field stop, or both an aperture stop and a field stop. In some embodiments, the optical lens 100 includes one aperture stop STO disposed between the first lens L1 and the second lens L2; ​​in some embodiments, the optical lens 100 may also include two aperture stops STO, one disposed between the first lens L1 and the second lens L2, and the other disposed between the third lens L3 and the fourth lens L4, which is not limited in this application. By setting the aperture stop STO to divide the optical lens 100 into a front lens group and a rear lens group, it is possible to more evenly correct both the edge rays and the principal rays passing through the lens; this is beneficial for the rational distribution of the refractive power of the optical lens 100, thereby enabling the optical lens 100 to have both a large field of view and a large aperture. It is understood that in other embodiments, the aperture stop STO may also be set between the second lens L2 and the third lens L3, or between other lenses, and the setting may be adjusted according to the actual situation. This embodiment does not make specific limitations on this.

[0035] In some embodiments, the optical lens 100 further includes a filter (not shown), which may be disposed between the image-side surface S12 of the sixth lens L6 and the imaging surface IMG of the optical lens 100. Optionally, the filter may be an infrared bandpass filter, which can filter out light of other wavelengths such as visible light, allowing infrared light to pass through and reflecting visible light to achieve infrared imaging of the optical lens 100. This enables the optical lens 100 to image in low-light environments or special application scenarios and obtain better image quality, thereby further improving the imaging capability of the optical lens 100 under alternating light and dark conditions, nighttime, and complex lighting conditions, providing stable and clear images, and further enhancing the sensing capability of the optical lens 100.

[0036] In some embodiments, the optical lens 100 further includes a protective glass CG disposed between the image-side surface S12 of the sixth lens L6 and the imaging surface IMG of the optical lens 100.

[0037] In some embodiments, the image-side surface S8 of the fourth lens L4 and the object-side surface S9 of the fifth lens L5 are cemented together to form a cemented lens. The image-side surface S8 of the fourth lens L4 and the object-side surface S9 of the fifth lens L5 are cemented surfaces. By combining the fourth lens L4 and the fifth lens L5 into a cemented lens group, the aberrations of the optical lens 100 can be further corrected, while also helping to shorten the overall optical length of the optical lens 100, which is beneficial for achieving high imaging quality while realizing miniaturization design.

[0038] In some embodiments, the optical lens 100 satisfies the following relationship: 5.6 ≤ TTL / ImgH ≤ 7.4, for example, TTL / ImgH can be 5.6, 5.8, 6.0, 6.2, 6.4, 6.6, 6.8, 7.0, 7.2, 7.4, etc.; where TTL is the distance on the optical axis O from the object side surface S1 of the first lens L1 to the imaging surface IMG of the optical lens 100, and ImgH is half the image height corresponding to the maximum field of view of the optical lens 100. By making the optical lens 100 satisfy the above relationship, the ratio of the total optical length to half the image height of the optical lens 100 can be reasonably configured, which is beneficial to achieving a compact design of the optical lens 100 while ensuring that the optical lens 100 has a sufficient imaging range, and further meets the miniaturization design requirements of the optical lens 100. Furthermore, by configuring the ratio of the total optical length to the half-image height of the optical lens 100 to be within the aforementioned range, it is also beneficial to balance the refractive power distribution and surface design of each lens, thereby improving the uniformity of illumination and image sharpness across the entire field of view.

[0039] In some embodiments, the optical lens 100 satisfies the following relationship: 2.8 ≤ F / ImgH ≤ 3.6, for example, F / ImgH can be 2.80, 2.90, 3.00, 3.10, 3.20, 3.30, 3.40, 3.50, 3.55, 3.60, etc.; where ImgH is half the image height corresponding to the maximum field of view of the optical lens 100, and F is the effective focal length of the optical lens 100. By making the optical lens 100 satisfy the above relationship, the ratio between the focal length and the image plane size of the optical lens 100 can be effectively balanced. This is beneficial for the optical lens 100 to maintain good aberration correction capability while miniaturizing, and it is beneficial to improve the imaging quality of the optical lens 100. This allows the optical lens 100 to adapt to the use needs in darker environments such as night or rainy days, effectively suppresses ghosting, improves image clarity, and gives the optical lens 100 the characteristics of miniaturization and high imaging quality.

[0040] In some embodiments, the optical lens 100 satisfies the following relationship: 1.5≤FNO≤2; for example, FNO can be 1.50, 1.55, 1.60, 1.65, 1.70, 1.75, 1.80, 1.85, 1.90, 2.00, etc.; where FNO is the aperture number of the optical lens 100. By controlling the ratio of the maximum field of view to the aperture number of the optical lens 100 within a certain range, it is beneficial to reasonably control the amount of light entering the optical lens 100, giving it a large aperture characteristic. This significantly improves the light transmission capability of the optical lens 100, and helps to improve its stable imaging in low-light environments such as at night or on rainy days. It also helps to solve the problem of insufficient light transmission capability and inability to adapt to dark environments in traditional optical lenses. This, in turn, helps to improve image quality. Achieving a large aperture in a compact six-element structure can further balance the aberrations of the optical lens 100, and further improve its imaging capability under alternating light and dark conditions, at night, and in complex lighting conditions. Thus, the optical lens 100 can meet the miniaturization requirements while having good image quality, and can achieve stable imaging under complex lighting conditions.

[0041] In some embodiments, the optical lens 100 satisfies the following relationship: -1.5 ≤ F1 / F ≤ -1.1, for example, F1 / F can be -1.50, -1.45, -1.40, -1.35, -1.30, -1.25, -1.20, -1.15, -1.10, -1.10, etc.; where F is the effective focal length of the optical lens 100, and F1 is the effective focal length of the first lens L1. By making the optical lens 100 satisfy the above relationship, the negative optical power of the first lens L1 can be reasonably allocated, so that the first lens L1 can effectively deflect the light from the edge of the field of view, thus reducing the negative optical power of the first lens L1. Light rays within the field of view are coupled into the optical lens 100, which helps to increase the field of view of the optical lens 100 and shorten the total optical length of the optical lens 100. At the same time, it helps to balance the aberrations generated by the first lens L1 and the aberration compensation relationship between the subsequent positive lens. If the upper limit of the relationship is exceeded, the negative refractive power of the first lens is too weak, which can easily lead to insufficient field of view of the optical lens 100. If the lower limit of the relationship is exceeded, the negative refractive power of the first lens is too strong, which can easily lead to difficulty in correcting the edge aberrations of the optical lens 100. This helps the optical lens 100 to improve the imaging quality of the edge field of view while achieving wide-angle characteristics.

[0042] In some embodiments, the optical lens 100 satisfies the following relationship: 1.2 ≤ F3 / F ≤ 2.8, for example, F3 / F can be 1.20, 1.35, 1.50, 1.65, 1.80, 2.00, 2.20, 2.40, 2.60, 2.80, etc.; where F is the effective focal length of the optical lens 100, and F3 is the effective focal length of the third lens L3. By making the optical lens 100 satisfy the above relationship, the magnitude of the positive refractive power of the third lens L3 can be reasonably controlled, so that the third lens L3 can receive and guide the light emitted from the second lens L2 toward the fourth lens L3. The deflection angle of the light on the surface of the third lens L3 can be controlled, which is beneficial to balancing the astigmatism and coma of the optical lens 100. In addition, it is also beneficial to shorten the total optical length of the optical lens 100, which is beneficial to further enabling the optical lens 100 to meet the user's miniaturization requirements while having good imaging quality.

[0043] In some embodiments, the optical lens 100 satisfies the following relationship: -5.2 ≤ F5 / F ≤ -0.7, for example, F5 / F can be -5.20, -4.80, -4.20, -3.60, -3.00, -2.50, -2.00, -1.50, -1.00, -0.70, etc.; where F is the effective focal length of the optical lens 100, and F5 is the effective focal length of the fifth lens L5. By making the optical lens 100 satisfy the above relationship, the negative optical power of the fifth lens L5 can be reasonably controlled, which is beneficial for correcting the higher-order aberrations of the optical lens 100 and optimizing the angle of the light rays emitted from the fifth lens L5. This is also beneficial for the subsequent sixth lens L6 to receive a large field of view light rays, thereby improving the uniformity of the image plane illumination of the optical lens 100.

[0044] In some embodiments, the optical lens 100 satisfies the following relationship: -41 ≤ R2 / R1 ≤ -3, for example, R2 / R1 can be -41, -38, -35, -30, -25, -20, -15, -10, -5, -3, etc.; where R1 is the radius of curvature of the object side surface S1 of the first lens L1 at the optical axis O, and R2 is the radius of curvature of the image side surface S2 of the first lens L1 at the optical axis O. By making the optical lens 100 satisfy the above relationship, the radius of curvature of the object side surface S1 of the first lens L1 can be reasonably controlled. The ratio of the curvature radius of the object side S1 to that of the image side S2 allows the object side S1 of the first lens L1 to have an appropriate degree of curvature to effectively receive and deflect edge field light, while the image side S2 of the first lens L1 can smoothly emit the diverged light to the second lens L2. This is beneficial for effectively collecting light from a large field of view and reducing the astigmatism of the optical lens 100. It also helps to improve the manufacturing yield and stability of the optical lens 100, so that the optical lens 100 can maintain good imaging quality while achieving a large field of view and miniaturization.

[0045] In some embodiments, the optical lens 100 satisfies the following relationship: -2.3 ≤ F3 / R4 ≤ -0.8, for example, F3 / R4 can be -2.30, -2.10, -1.90, -1.70, -1.50, -1.30, -1.10, -0.95, -0.85, -0.80, etc.; where F3 is the effective focal length of the third lens L3, and R4 is the radius of curvature of the image side surface S4 of the second lens L2 at the optical axis O. By making the optical lens 100 satisfy the above relationship, the optical power of the third lens L3 and the second lens L2 can be effectively controlled. The matching relationship between the curvature of the image side surface S4 of the second lens L2 is beneficial to controlling the curvature of the image side surface S4 of the second lens L2, so that the image side surface S4 of the second lens L2 can effectively receive and deflect incident light within a large field of view, and smoothly couple light from the edge field of view into the third lens L3. This is beneficial to balancing the coma and field curvature of the optical lens 100. At the same time, it is beneficial to reduce the surface shape sensitivity of the second lens L2, reduce the impact of processing and assembly tolerances on image quality, improve the manufacturing yield and stability of the second lens L2, and thus improve the assembly yield and imaging stability of the optical lens 100.

[0046] In some embodiments, the optical lens 100 satisfies the following relationship: 1.9 ≤ |R6 / R5| ≤ 3.7, for example, |R6 / R5| can be 1.90, 2.10, 2.30, 2.50, 2.70, 2.90, 3.10, 3.30, 3.50, 3.70, etc.; where R5 is the radius of curvature of the object-side surface S5 of the third lens L3 at the optical axis O, and R6 is the radius of curvature of the image-side surface S6 of the third lens L3 at the optical axis O. This is achieved by making the optical lens... The head 100 satisfies the above relationship and can reasonably control the ratio of the curvature radius of the object side S5 and the image side S6 of the third lens L3. This allows the third lens L3 to effectively converge the light rays emitted from the first two lenses and accurately converge the light rays to the fourth lens L4. This helps to reduce the spherical aberration and coma of the optical lens 100, while also reducing the processing sensitivity of the third lens L3. Thus, the processing difficulty of the optical lens 100 is reduced while maintaining high resolution.

[0047] In some embodiments, the optical lens 100 satisfies the following relationship: -2.4 ≤ R8 / R7 ≤ -0.9, for example, R8 / R7 can be -2.40, -2.20, -2.00, -1.80, -1.60, -1.40, -1.20, -1.10, -1.00, -0.90, etc.; where R7 is the radius of curvature of the object-side surface S8 of the fourth lens L4 at the optical axis O, and R8 is the radius of curvature of the image-side surface S8 of the fourth lens L4 at the optical axis O. By making the optical lens 100 satisfy the above relationship, the ratio of the radii of curvature of the object-side surface S7 and the image-side surface S8 of the fourth lens L4 can be effectively controlled, enabling the fourth lens L4 to effectively converge the light rays emitted from the first three lenses, while also helping to correct the field curvature and astigmatism of the optical lens 100, and improving the imaging clarity and uniformity across the entire field of view. Furthermore, the reasonable ratio of the curvature radius between the object side S7 and the image side S8 of the fourth lens L4 helps to reduce the deflection angle of light on the surface of the fourth lens L4, reduce the generation of ghost images and stray light, improve image clarity, and further enable the optical lens 100 to achieve high-resolution imaging quality on the basis of miniaturization.

[0048] In some embodiments, the optical lens 100 satisfies the following relationship: 1 ≤ CT4 / CT3 ≤ 2.1, for example, CT4 / CT3 can be 1.00, 1.15, 1.30, 1.45, 1.60, 1.75, 1.85, 1.95, 2.05, 2.10, etc.; where CT3 is the thickness of the third lens L3 on the optical axis O, and CT4 is the thickness of the fourth lens L4 on the optical axis O. By making the optical lens 100 satisfy the above relationship, the center thickness ratio between the third lens L3 and the fourth lens L4 can be reasonably allocated. While ensuring that the third lens L3 has sufficient positive refractive power, sufficient space is provided for the fourth lens L4 to effectively exert its positive refractive power. At the same time, the reasonable thickness ratio between the third lens L3 and the fourth lens L4 helps to reduce the processing difficulty and forming stress of the lens, improves the manufacturing yield of the optical lens 100, and balances the formability and assembly stability of the lens, thereby improving the manufacturability of the optical lens 100 while achieving good imaging quality.

[0049] In some embodiments, the optical lens 100 satisfies the following relationship: 1.8≤TTL / F≤2.1, for example, TTL / F can be 1.80, 1.83, 1.86, 1.89, 1.92, 1.95, 1.98, 2.00, 2.05, 2.10, etc.; wherein, TTL is the distance on the optical axis O from the object side surface S1 of the first lens L1 to the imaging surface IMG of the optical lens 100, and F is the effective focal length of the optical lens 100. By ensuring that the optical lens 100 satisfies the above-mentioned relationship, the ratio of the total optical length to the focal length of the optical lens 100 can be effectively controlled. This is beneficial for further ensuring good imaging performance of the optical lens 100 while effectively controlling its total optical length, making the structure of the optical lens 100 more compact and meeting the user's miniaturization requirements. At the same time, it also helps to reduce the difficulty of aberration correction and further improve the imaging clarity and uniformity across the entire field of view while controlling the total optical length of the optical lens 100. This allows the optical lens 100 to achieve high-resolution imaging in limited spaces (such as inside a vehicle), thus achieving both miniaturization and high imaging quality.

[0050] In some embodiments, the optical lens 100 satisfies the following relationship: 0.84≤SL / TTL≤0.96; for example, SL / TTL can be 0.84, 0.85, 0.87, 0.89, 0.90, 0.91, 0.92, 0.93, 0.94, 0.96, etc.; wherein, TTL is the distance from the object side surface S1 of the first lens L1 to the imaging surface IMG of the optical lens 100 on the optical axis O, and SL is the distance from the aperture stop STO to the imaging surface IMG of the optical lens 100 on the optical axis O. By ensuring that the optical lens 100 satisfies the above-mentioned relationship, the relative position of the aperture stop STO in the optical lens 100 can be reasonably controlled, which is beneficial for controlling the total optical length of the optical lens 100, balancing the length distribution of the front and rear lens groups, reasonably controlling the arrangement density of the front and rear lens groups, and improving the assembly yield of the optical lens 100. In addition, it is also beneficial for suppressing off-axis aberrations and improving the uniformity of image plane illumination, thereby improving the assembly stability and overall imaging performance of the optical lens 100.

[0051] In some embodiments, the optical lens 100 satisfies the following relationship: -6 ≤ F5 / F4 ≤ -0.6, for example, F5 / F4 can be -6.0, -5.5, -5.0, -4.5, -4.0, -3.5, -3.0, -2.5, -1.5, -0.6, etc.; where F4 is the effective focal length of the fourth lens L4 and F5 is the effective focal length of the fifth lens L5. By making the optical lens 100 satisfy the above relationship, it is beneficial to rationally configure the refractive power ratio between the fourth lens L4 and the fifth lens L5, so that the two can form good aberration complementarity in the process of light convergence and divergence, which is beneficial to balance the spherical aberration, coma and astigmatism of the optical lens 100, effectively correct the chromatic aberration and higher-order spherical aberration of the optical lens 100, and improve the imaging uniformity and resolution of the optical lens 100 across the entire field of view. Furthermore, the refractive force distribution between the fourth lens L4 and the fifth lens L5 helps to shorten the total optical length of the optical lens 100, making the six-element structure more compact, thereby enabling the optical lens 100 to achieve high imaging quality on the basis of miniaturization.

[0052] In some embodiments, the optical lens 100 satisfies the following relationship: 4 ≤ F2 / CT2 ≤ 8.8, for example, F2 / CT2 can be 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.8, etc.; where 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. By making the optical lens 100 satisfy the above relationship, the ratio between the optical power of the second lens L2 and the center thickness of the second lens L2 can be reasonably controlled. This is beneficial for the second lens L2 to provide sufficient positive refractive power while having good formability and structural strength, providing sufficient light deflection space for the second lens L2, reducing the difficulty of injection molding or compression molding of the second lens L2, and balancing the aberrations of the optical lens 100.

[0053] In some embodiments, the optical lens 100 satisfies the following relationship: -23≤F5 / CT5≤-3; for example, F5 / CT5 can be -23, -21, -18, -15, -12, -9, -7, -5, -4, -3, etc.; where 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. By ensuring that the optical lens 100 satisfies the aforementioned relationship, the ratio between the optical power of the fifth lens L5 and its central thickness can be reasonably controlled. This helps to ensure that the fifth lens L5 has sufficient negative refractive power to effectively diverge light emitted from the fourth lens L4, correcting field curvature and astigmatism of the optical lens 100. Simultaneously, it ensures that the fifth lens L5 has an appropriate central thickness, improving its stability during assembly and effectively increasing the mass production yield of the optical lens. Exceeding the upper limit of the relationship results in an excessively short focal length for the fifth lens L5, leading to excessive divergence of edge light and introducing significant higher-order spherical aberration and axial chromatic aberration, thus reducing the on-axis resolution of the optical lens 100. Conversely, below the lower limit of the relationship, the focal length of the fifth lens L5 is too long, resulting in weak refractive power and an inability to effectively diverge large-angle incident light. Furthermore, a reasonable focal length-to-thickness ratio for the fifth lens L5 helps to reduce its surface sensitivity, decrease ghosting and stray light generation, and improve image clarity, enabling the optical lens 100 to achieve high-resolution imaging quality while maintaining miniaturization.

[0054] In some embodiments, the optical lens 100 satisfies the following relationship: 0.95≤SD5 / SD4≤1.2, for example, SD5 / SD4 can be 0.95, 0.98, 1.00, 1.03, 1.05, 1.08, 1.10, 1.13, 1.15, 1.20, etc., wherein SD4 is half of the maximum effective aperture of the image side surface S4 of the second lens L2, and SD5 is half of the maximum effective aperture of the object side surface S5 of the third lens L3. By ensuring that the optical lens 100 satisfies the aforementioned relationship, the effective half-aperture ratio between the object-side surface of the third lens L3 and the image-side surface S4 of the second lens L4 can be effectively controlled. This ensures that the effective half-apertures of the object-side surface of the third lens L3 and the image-side surface S4 of the second lens L4 are essentially consistent, which facilitates the smooth entry of light from the second lens L2 into the third lens L3, avoiding light cutting and energy loss caused by abrupt changes in aperture, thus improving the light throughput of the optical lens 100. Simultaneously, it helps reduce light scattering and reflection at the lens edges, reducing ghosting and stray light generation, and improving the image clarity of the optical lens 100. Furthermore, the similar aperture design between the object-side surface of the third lens L3 and the image-side surface S4 of the second lens L4 reduces assembly difficulty and improves manufacturing yield, enabling the optical lens 100 to achieve high imaging quality while maintaining miniaturization.

[0055] In some embodiments, the optical lens 100 satisfies the following relationship: 1≤SD10 / SD11≤1.2, for example, SD10 / SD11 can be 1.00, 1.02, 1.04, 1.06, 1.08, 1.10, 1.12, 1.14, 1.18, 1.20, etc.; wherein, SD10 is half of the maximum effective aperture of the image side surface S10 of the fifth lens L5, and SD11 is half of the maximum effective aperture of the object side surface S11 of the sixth lens L6. By ensuring that the optical lens 100 satisfies the above-mentioned relationship, the effective half-aperture ratio between the image-side surface S10 of the fifth lens L5 and the object-side surface S11 of the sixth lens L6 can be effectively controlled. This helps to reduce the abrupt change in aperture between the fifth lens L5 and the sixth lens L6, and improves the image clarity of the optical lens 100. The similar aperture design between the image-side surface S10 of the fifth lens L5 and the object-side surface S11 of the sixth lens L6 helps to reduce assembly difficulty, maintain the continuity and assembly stability of the internal structure of the lens barrel, and thus improve the overall imaging quality and production yield of the optical lens 100.

[0056] In some embodiments, the optical lens 100 satisfies the following relationship: 1.5≤CT3 / ET3≤2.6; for example, CT3 / ET3 can be 1.50, 1.65, 1.80, 1.95, 2.10, 2.20, 2.30, 2.40, 2.50, 2.60, etc.; wherein, CT3 is the thickness of the third lens L3 on the optical axis O, and ET3 is the distance from the maximum effective aperture of the object side surface S5 of the third lens L3 to the maximum effective aperture of the image side surface S6 of the third lens L3 on the optical axis O. By ensuring that the optical lens 100 satisfies the above-mentioned relationship, the ratio of the center thickness to the edge thickness of the third lens L3 can be rationally configured, giving the third lens L3 an appropriate thickness-to-weight ratio. This is beneficial for the third lens L3 to maintain good processing and forming characteristics while possessing positive refractive power, avoiding injection molding difficulties or stress concentration problems caused by excessively thin edges, and improving the manufacturing yield and reliability of the third lens L3. At the same time, it is beneficial to control the degree of light deflection inside the third lens L3, reduce aberrations, and improve the imaging sharpness of the optical lens 100. In addition, it is also beneficial to shorten the overall optical length of the optical lens 100, making the six-element structure more compact, and further enabling the optical lens 100 to achieve both miniaturization and high imaging quality.

[0057] In some embodiments, the optical lens 100 satisfies the following relationship: 105° ≤ (FOV×F) / ImgH ≤ 115°, for example, (FOV×F) / ImgH can be 105°, 106°, 107°, 108°, 109°, 110°, 111°, 112°, 113°, 115°, etc. Wherein, FOV is the maximum field of view of the optical lens 100, F is the effective focal length of the optical lens 100, and ImgH is half the image height corresponding to the maximum field of view of the optical lens 100. By ensuring that the optical lens 100 satisfies the above-mentioned relationship, the matching relationship between the field of view, focal length, and image height can be effectively balanced. This is beneficial for maintaining a reasonable image plane size and distortion control while achieving a large field of view. The optical lens 100 can effectively receive incident light within a large field of view and accurately image it onto the imaging plane, improving the imaging uniformity and resolution across the entire field of view. Consequently, the optical lens 100 possesses excellent wide-angle imaging capabilities and edge image quality, which helps reduce ghosting and stray light generation. This allows the optical lens 100 to achieve high-definition imaging quality while maintaining a miniaturized design, meeting the usage requirements of different application environments (such as under alternating light and dark conditions, nighttime, and complex lighting conditions).

[0058] In some embodiments, the optical lens 100 satisfies the following relationship: 2.7 ≤ F / BFL ≤ 7.8, for example, F / BFL can be 2.7, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 7.0, 7.8, etc.; where F is the effective focal length of the optical lens 100, and BFL is the distance on the optical axis O from the image side surface S12 of the sixth lens L6 to the imaging surface IMG of the optical lens 100. By making the optical lens 100 satisfy the above relationship, the ratio between the focal length and the optical back focal length of the optical lens 100 can be effectively controlled, which is beneficial to achieving miniaturization of the optical lens 100 while ensuring sufficient focusing tolerance, and to achieving a long back focal length on the basis of miniaturization of the optical lens 100, providing the necessary safety gap for the packaging structure such as protective glass and image sensor.

[0059] In some embodiments, the optical lens 100 satisfies the following relationship: 1.9° / mm ≤ FOV / F ≤ 3.3° / mm; for example, FOV / F can be 1.9° / mm, 2.0° / mm, 2.2° / mm, 2.4° / mm, 2.6° / mm, 2.8° / mm, 3.0° / mm, 3.1° / mm, 3.2° / mm, 3.3° / mm, etc.; where FOV is the maximum field of view of the optical lens 100, and F is the effective focal length of the optical lens 100. By ensuring that the optical lens 100 satisfies the above-mentioned relationship, it is beneficial to rationally configure the ratio of the maximum field of view to the effective focal length of the optical lens 100. This allows the optical lens 100 to obtain a large field of view while maintaining an appropriate focal length, thereby effectively controlling the light deflection angle at the edge of the field of view. This helps to reduce the difficulty of aberration correction and improve the imaging uniformity and resolution across the entire field of view. At the same time, it is beneficial to further realize the miniaturization design of the optical lens 100, and to shorten the total optical length of the optical lens 100 as much as possible while ensuring a wide field of view.

[0060] In some embodiments, the optical lens 100 satisfies the following relationship: 1.6≤TTL / ∑CT≤2; for example, TTL / ∑CT can be 1.60, 1.65, 1.70, 1.75, 1.80, 1.85, 1.90, 1.95, 1.98, 2.00, etc.; where TTL is the distance on the optical axis O from the object side surface S1 of the first lens L1 to the imaging surface IMG of the optical lens 100, and ∑CT is the sum of the thicknesses of all lenses from the first lens L1 to the sixth lens L6 on the optical axis O. By ensuring that the optical lens 100 satisfies the above-mentioned relationship, the ratio between the total optical length of the optical lens 100 and the total thickness of the six lenses of the optical lens 100 can be effectively controlled. This effectively controls the overall length of the optical lens 100, making its structure more compact and meeting the requirements of miniaturization design. It also helps to reduce abrupt changes in the light deflection angle, thereby effectively reducing aberrations and ghosting, and improving the imaging resolution and image clarity of the optical lens 100. This allows the optical lens 100 to balance miniaturization and high imaging quality.

[0061] In some embodiments, the optical lens 100 satisfies the following relationship: 1 ≤ F2 / F ≤ 1.4; for example, F2 / F can be 1.00, 1.04, 1.08, 1.12, 1.16, 1.20, 1.24, 1.28, 1.32, 1.40, etc.; where F is the effective focal length of the optical lens 100, and F2 is the effective focal length of the second lens L2. By making the optical lens 100 satisfy the above relationship, the magnitude of the positive refractive power of the second lens L2 can be reasonably controlled, so that the second lens L2 can converge the light rays emitted from the first lens L1, which is beneficial to balancing the astigmatism and coma of the optical lens 100; in addition, it is also beneficial to shorten the total optical length of the optical lens 100, which is beneficial to further enabling the optical lens 100 to meet the user's miniaturization requirements while having good imaging quality.

[0062] In some embodiments, the optical lens 100 satisfies the following relationship: 0.7 ≤ F4 / F ≤ 1.2; for example, F4 / F can be 0.70, 0.75, 0.80, 0.85, 0.90, 0.95, 1.00, 1.05, 1.10, 1.20, etc.; where F is the effective focal length of the optical lens 100, and F4 is the effective focal length of the fourth lens L4. By making the optical lens 100 satisfy the above relationship, the positive optical power of the fourth lens L4 can be reasonably controlled, which is beneficial for effectively correcting field curvature and distortion of the optical lens 100, and at the same time, it is beneficial for balancing the higher-order aberrations of the optical lens 100, and further improving the imaging quality of the optical lens 100.

[0063] In some embodiments, the optical lens 100 satisfies the following relationship: -1.8 ≤ F6 / F ≤ -0.5; for example, F6 / F can be -1.80, -1.60, -1.40, -1.20, -1.00, -0.90, -0.80, -0.70, -0.50, etc.; where F is the effective focal length of the optical lens 100, and F6 is the effective focal length of the sixth lens L6. By making the optical lens 100 satisfy the above relationship, the negative optical power of the sixth lens L6 can be reasonably controlled, enabling the sixth lens L6 to effectively diverge the light rays emitted from the first five lenses and accurately image them onto the imaging plane IMG; at the same time, it is beneficial to correct the field curvature and astigmatism of the optical lens 100, which can improve the imaging sharpness and uniformity across the entire field of view, and help to shorten the total optical length of the optical lens 100, making the six-element structure more compact. In addition, it helps to suppress stray light from the optical lens 100, improves the image clarity of the optical lens 100, and enhances the imaging quality of the optical lens 100 while miniaturizing it.

[0064] In some embodiments, the optical lens 100 satisfies the following relationship: -2 ≤ R3 / R4 ≤ -1; for example, R3 / R4 can be -2.00, -1.90, -1.80, -1.70, -1.60, -1.50, -1.40, -1.30, -1.20, -1.00, etc.; wherein, R3 is the radius of curvature of the object-side surface S3 of the second lens L2 at the optical axis O, and R4 is the radius of curvature of the image-side surface S4 of the second lens L2 at the optical axis O; By ensuring that the optical lens 100 satisfies the aforementioned relationship, the ratio of the curvature radii of the object-side surface S3 to the image-side surface S4 of the second lens L2 can be configured. This facilitates control over the surface shape of the second lens L2, allowing the object-side surface S3 of the second lens L2 to receive the diverging light rays emitted from the first lens L1 with an appropriate degree of curvature, and enabling the image-side surface S4 of the second lens L2 to smoothly guide the light rays to the third lens L3. This helps reduce surface reflection loss and ghosting, and can reduce astigmatism and coma. Simultaneously, a reasonable ratio of the curvature radii of the second lens L2 improves its fabrication characteristics and reduces surface sensitivity, allowing the optical lens 100 to achieve good imaging quality while maintaining miniaturization.

[0065] In some embodiments, the optical lens 100 satisfies the following relationship: 0.5 ≤ |R10 / R9| ≤ 25; for example, |R10 / R9| can be 0.5, 1.0, 2.0, 4.0, 6.0, 8.0, 10.0, 12.0, 18.0, 25.0, etc.; where R9 is the radius of curvature of the object side surface S9 of the fifth lens L5 at the optical axis O, and R10 is the radius of curvature of the image side surface S10 of the fifth lens L5 at the optical axis O; by making the optical lens 100 satisfy the above relationship, the ratio of the radius of curvature of the object side surface S9 and the image side surface S10 of the fifth lens L5 can be effectively controlled, which is beneficial to controlling the surface shape of the fifth lens L5 to correct the advanced aberrations and distortions generated by the optical lens 100, and at the same time can improve the imaging quality of the optical lens 100, and further enable the optical lens 100 to obtain high imaging quality on the basis of miniaturization.

[0066] In some embodiments, the optical lens 100 satisfies the following relationship: -25 ≤ F1 / CT1 ≤ -4; for example, F1 / CT1 can be -25, -22, -18, -15, -12, -10, -8, -6, -5, -4, etc.; where F1 is the effective focal length of the first lens L1, and CT1 is the thickness of the first lens L1 on the optical axis O. By making the optical lens 100 satisfy the above relationship, the matching relationship between the optical power of the first lens L1 and its center thickness can be reasonably controlled. If the relationship exceeds the upper limit, the focal length of the first lens L1 is too short, resulting in excessive divergence of edge light and reduced on-axis resolution of the optical lens 100; if the relationship is below the lower limit, the focal length of the first lens L1 is too long, resulting in weak lens refractive power and inability to effectively diverge large-angle incident light. Meanwhile, the reasonable focal length and thickness ratio of the first lens L1 helps to reduce the surface sensitivity of the first lens L1, improves the processing feasibility and structural stability of the optical lens 100, and enhances image clarity, enabling the optical lens 100 to achieve high-resolution imaging quality on the basis of miniaturization.

[0067] In some embodiments, the optical lens 100 satisfies the following relationship: 5 ≤ F3 / CT3 ≤ 19; for example, F3 / CT3 can be 5.0, 6.5, 8.0, 9.5, 11.0, 12.5, 14.0, 15.5, 17.0, 19.0, etc.; where 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. By making the optical lens 100 satisfy the above relationship, the ratio between the optical power and the center thickness of the third lens L3 can be reasonably controlled. This is beneficial for ensuring that the third lens L3 has sufficient positive refractive power to effectively converge light rays, thereby improving the imaging resolution of the optical lens 100 while maintaining an appropriate center thickness for the third lens L3. Exceeding the upper limit of the relationship will cause difficulties in processing and forming and assembly deformation due to the third lens L3 being too thin, while exceeding the lower limit of the relationship will cause the third lens L3 to be too thick, resulting in an increase in the total optical length of the optical lens 100.

[0068] This helps to ensure that the lens has sufficient structural strength and good injection molding flow while providing appropriate positive light power to focus light, thereby reducing the difficulty of lens molding and improving mass production consistency while improving the 100 resolution of the optical lens.

[0069] In some embodiments, the optical lens 100 satisfies the following relationship: 2.4 ≤ F4 / CT4 ≤ 4.6; for example, F4 / CT4 can be 2.4, 2.6, 2.9, 3.2, 3.5, 3.8, 4.0, 4.2, 4.4, 4.6, etc.; where 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. By making the optical lens 100 satisfy the above relationship, the ratio of the effective focal length of the fourth lens L4 to its center thickness is reasonably configured. This is beneficial to ensure that the fourth lens L4 has sufficient positive refractive power to effectively converge light, correct field curvature and astigmatism, and improve imaging resolution, while maintaining an appropriate center thickness of the fourth lens L4. This avoids the difficulties in processing and forming and assembly deformation caused by the fourth lens L4 being too thin, and avoids the increase in the total optical length of the optical lens 100 caused by the fourth lens L4 being too thick.

[0070] In some embodiments, the optical lens 100 satisfies the following relationship: -16≤F6 / CT6≤-7; for example, F6 / CT6 can be -16.0, -14.5, -13.0, -11.5, -10.0, -9.0, -8.5, -8.0, -7.5, -7.0, etc.; where 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. By ensuring that the optical lens 100 satisfies the above-mentioned relationship, the ratio of the effective focal length of the sixth lens L6 to its center thickness is rationally configured. This is beneficial in ensuring that the sixth lens L6 has sufficient negative refractive power to effectively diverge light. If the focal length exceeds the upper limit of the relationship, the focal length of the sixth lens L6 is too short, resulting in excessive divergence of edge light, which prevents light from entering the imaging plane IMG. If the focal length is below the lower limit of the relationship, the focal length of the sixth lens L6 is too long, resulting in weak lens refractive power and inability to effectively diverge large-angle incident light. In addition, the above settings also help improve the manufacturing feasibility and structural stability of the optical lens 100, and improve image clarity, enabling the optical lens 100 to achieve high-resolution imaging quality while miniaturizing.

[0071] The surface shape of each aspherical lens can be defined using, but is not limited to, the following aspherical formulas: ; Where Z is the distance from the corresponding point on the aspherical surface to the plane tangent to the vertex of the surface, c is the curvature of the vertex of the aspherical surface, c = 1 / Y, Y is the radius of curvature (i.e., the paraxial curvature c is the reciprocal of the radius of Y in Table 1a), 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 higher-order term in the aspherical surface shape formula.

[0072] The optical lens 100 of this embodiment will be described in detail below with reference to specific parameters.

[0073] First Embodiment 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, an aperture stop STO, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a protective glass CG, arranged sequentially along the optical axis O from the object side to the image side. The first lens L1 has negative refractive power, the second lens L2 has positive refractive power, the third lens L3 has positive refractive power, the fourth lens L4 has positive refractive power, the fifth lens L5 has negative refractive power, and the sixth lens L6 has negative refractive power.

[0074] The object-side surface S1 of the first lens L1 is concave 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 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 concave 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 flat near the optical axis O, and the image-side surface S12 of the sixth lens L6 is concave near the optical axis O.

[0075] Specifically, the Y-radius in Table 1a refers to the radius of curvature of the object-side or image-side surface of the corresponding surface number at the optical axis O. The fourth lens L4 and the fifth lens L5 are cemented together to form a cemented lens. The image-side surface S8 of the fourth lens L4 and the object-side surface S9 of the fifth lens L5 have the same surface type and Y-radius. 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 surface of the lens to the rear 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 rear 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 surface S1 of the first lens L1 to the image-side surface S12 of the sixth lens L6 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 rear surface. If the thickness of the stop STO is positive, the stop STO is on the object side of the vertex of the rear surface. It is understandable that the units for the Y radius, thickness, and effective focal length in Table 1a are all mm. Furthermore, the reference wavelength for the refractive index, Abbe number, and effective focal length of each lens L in Table 1a is 486.0000 nm.

[0076] In the first embodiment, the object-side surface S3 and the image-side surface S4 of the second lens L2 are both aspherical, and the object-side surface S11 and the image-side surface S12 of the sixth lens L6 are both 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 the aspherical mirrors in the first embodiment.

[0077] Table 1a Table 1b Please see Figure 2 (A) in the middle Figure 2 Figure (A) shows longitudinal spherical aberration diagrams of the optical lens 100 in the first embodiment at wavelengths of 656.0000 nm, 588.0000 nm, 546.0000 nm, 486.0000 nm, 436.0000 nm, and 410.0000 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. Figure 2 As can be seen from (A) in the diagram, the optical lens 100 in the first embodiment has a better spherical aberration value, indicating that the optical lens 100 in this embodiment has better imaging quality. Please refer to [link / reference]. Figure 2 (B) in the middle Figure 2 Figure (B) shows the astigmatism diagram of the optical lens 100 in the first embodiment at a wavelength of 486.0000 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 486.0000 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. Figure 2 As can be seen from (C), the distortion of the optical lens 100 is well corrected at this wavelength.

[0078] Second Embodiment The structural schematic diagram of the optical lens 100 disclosed in the second embodiment of this application is shown below. Figure 3As shown, the optical lens 100 includes a first lens L1, an aperture stop STO, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a protective glass CG, arranged sequentially along the optical axis O from the object side to the image side. The first lens L1 has negative refractive power, the second lens L2 has positive refractive power, the third lens L3 has positive refractive power, the fourth lens L4 has positive refractive power, the fifth lens L5 has negative refractive power, and the sixth lens L6 has negative refractive power.

[0079] The object-side surface S1 of the first lens L1 is concave 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 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 concave 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 concave near the optical axis O.

[0080] Specifically, the Y-radius in Table 2a refers to the radius of curvature of the object-side or image-side surface of the corresponding surface number at the optical axis O. In this case, the fourth lens L4 and the fifth lens L5 are cemented together to form a cemented lens. The image-side surface S8 of the fourth lens L4 and the object-side surface S9 of the fifth lens L5 have the same surface type and Y-radius. 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 surface of the lens to the rear 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 rear 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 surface S1 of the first lens L1 to the image-side surface 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 rear surface. If the thickness of the stop STO is positive, the stop STO is on the object side of the vertex of the rear surface. 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 L in Table 2a is 486.0000 nm.

[0081] In the second embodiment, the object-side surface S3 and the image-side surface S4 of the second lens L2 are both aspherical, and the object-side surface S11 and the image-side surface S12 of the sixth lens L6 are both 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 the aspherical mirrors in the second embodiment.

[0082] Table 2a Table 2b Please see Figure 4 , Figure 4 Figure (A) shows the longitudinal spherical aberration diagrams of the optical lens 100 in the second embodiment at wavelengths of 656.0000 nm, 588.0000 nm, 546.0000 nm, 486.0000 nm, 436.0000 nm, and 410.0000 nm, respectively. 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 the curves in (C) can be referred to in the first embodiment regarding... Figure 2 (A) in the middle Figure 2 (B) in the middle Figure 2 The content described in (C) will not be repeated here.

[0083] Third Embodiment 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, an aperture stop STO, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a protective glass CG, arranged sequentially along the optical axis O from the object side to the image side. The first lens L1 has negative refractive power, the second lens L2 has positive refractive power, the third lens L3 has positive refractive power, the fourth lens L4 has positive refractive power, the fifth lens L5 has negative refractive power, and the sixth lens L6 has negative refractive power.

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

[0085] Specifically, the Y-radius in Table 3a refers to the radius of curvature of the object-side or image-side surface at the optical axis O for the corresponding surface number. The fourth lens L4 and the fifth lens L5 are cemented together to form a cemented lens. The image-side surface S8 of the fourth lens L4 and the object-side surface S9 of the fifth lens L5 have the same surface type and Y-radius. It can be understood that the units for 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 L in Table 3a is 486.0000 nm.

[0086] In the third embodiment, the object-side surface S3 and the image-side surface S4 of the second lens L2 are both aspherical, and the object-side surface S11 and the image-side surface S12 of the sixth lens L6 are both 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 the aspherical mirrors in the third embodiment.

[0087] Table 3a Table 3b Please see Figure 6 , Figure 6 Figure (A) shows the longitudinal spherical aberration diagrams of the optical lens 100 in the third embodiment at wavelengths of 656.0000 nm, 588.0000 nm, 546.0000 nm, 486.0000 nm, 436.0000 nm, and 410.0000 nm, respectively. 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 the curves in (C) can be referred to in the first embodiment regarding... Figure 2 (A) in the middle Figure 2 (B) in the middle Figure 2 The content described in (C) will not be repeated here.

[0088] Fourth embodiment 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, an aperture stop STO, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a protective glass CG, arranged sequentially along the optical axis O from the object side to the image side. The first lens L1 has negative refractive power, the second lens L2 has positive refractive power, the third lens L3 has positive refractive power, the fourth lens L4 has positive refractive power, the fifth lens L5 has negative refractive power, and the sixth lens L6 has negative refractive power.

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

[0090] Specifically, the Y-radius in Table 4a refers to the radius of curvature of the object-side or image-side surface at the optical axis O for the corresponding surface number. The fourth lens L4 and the fifth lens L5 are cemented together to form a cemented lens. The image-side surface S8 of the fourth lens L4 and the object-side surface S9 of the fifth lens L5 have the same surface type and Y-radius. It can be understood that the units for 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 L in Table 4a is 486.0000 nm.

[0091] In the fourth embodiment, the object-side surface S3 and the image-side surface S4 of the second lens L2 are both aspherical, and the object-side surface S11 and the image-side surface S12 of the sixth lens L6 are both 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 the aspherical mirrors in the fourth embodiment.

[0092] Table 4a Table 4b Please see Figure 8 , Figure 8 Figure (A) shows the longitudinal spherical aberration diagrams of the optical lens 100 in the fourth embodiment at wavelengths of 656.0000 nm, 588.0000 nm, 546.0000 nm, 486.0000 nm, 436.0000 nm, and 410.0000 nm, respectively. 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 the curves in (C) can be referred to in the first embodiment regarding... Figure 2 (A) in the middle Figure 2 (B) in the middle Figure 2 The content described in (C) will not be repeated here.

[0093] Fifth embodiment 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, an aperture stop STO, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a protective glass CG, arranged sequentially along the optical axis O from the object side to the image side. The first lens L1 has negative refractive power, the second lens L2 has positive refractive power, the third lens L3 has positive refractive power, the fourth lens L4 has positive refractive power, the fifth lens L5 has negative refractive power, and the sixth lens L6 has negative refractive power.

[0094] The object-side surface S1 of the first lens L1 is concave 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 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 concave 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 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.

[0095] Specifically, the Y-radius in Table 5a refers to the radius of curvature of the object-side or image-side surface at the optical axis O for the corresponding surface number. The fourth lens L4 and the fifth lens L5 are cemented together to form a cemented lens. The image-side surface S8 of the fourth lens L4 and the object-side surface S9 of the fifth lens L5 have the same surface type and Y-radius. It can be understood that the units for Y-radius, thickness, and effective focal length in Table 5a are all mm. Furthermore, the reference wavelength for the refractive index, Abbe number, and effective focal length of each lens L in Table 5a is 486.0000 nm.

[0096] In the fifth embodiment, the object-side surface S3 and the image-side surface S4 of the second lens L2 are both aspherical, and the object-side surface S11 and the image-side surface S12 of the sixth lens L6 are both 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 the aspherical mirrors in the fourth embodiment.

[0097] Table 5a Table 5b Please see Figure 10 , Figure 10 Figure (A) shows the longitudinal spherical aberration diagrams of the optical lens 100 in the fifth embodiment at wavelengths of 656.0000 nm, 588.0000 nm, 546.0000 nm, 486.0000 nm, 436.0000 nm, and 410.0000 nm, respectively. 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 the curves in (C) can be referred to in the first embodiment regarding... Figure 2 (A) in the middle Figure 2 (B) in the middle Figure 2 The content described in (C) will not be repeated here.

[0098] Table 6a shows the values ​​of FOV, CT4 / CT5, TTL / ImgH, F / ImgH, FNO, F1 / F, F3 / F, F5 / F, R2 / R1, F3 / R4, |R6 / R5|, R8 / R7, CT4 / C3, TTL / F, SL / TTL, F5 / F4, F2 / CT2, F5 / CT5, SD5 / SD4, SD10 / SD11, CT3 / ET3, (FOV×F) / ImgH, F / BFL, and FOV / F in the optical lenses 100 of the first to fifth embodiments. Table 6b shows the values ​​of TTL / ∑CT, F2 / F, F4 / F, F6 / F, R3 / R4, |R10 / R9|, F1 / CT1, F3 / CT3, F4 / CT4, and F6 / CT6 in the optical lenses 100 of the first to fifth embodiments.

[0099] Table 6a Table 6b Please see Figure 11 This application also provides a camera module 200. The camera module 100 includes an optical lens 100 and an image sensor 201 as described in any of the above embodiments. The image sensor 201 is disposed on the image side of the optical lens 100. The image sensor 201 may be a complementary metal-oxide-semiconductor (CMOS) image sensor or a charge-coupled device (CCD).

[0100] Please see Figure 12 This application also provides an electronic device 300. The electronic device 300 includes a housing 301 and a camera module 200, with the camera module 200 mounted on the housing 301. The electronic device 300 in this application includes, but is not limited to, imaging-enabled electronic devices such as vehicle-mounted devices, mobile phones, drones, tablets, smartwatches, thumb cameras, monitors, dashcams, laptops, e-book readers, portable multimedia players (PMPs), portable telephones, video phones, mobile medical devices, and wearable devices.

[0101] 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 six refractive lenses in total, arranged sequentially from the object side to the image side along the optical axis: The first lens has negative refractive power, and its object side is concave near the optical axis, and its image side is concave near the optical axis. The second lens has positive refractive power, and its object side is convex near the optical axis, and its image side is convex near the optical axis. The third lens has positive refractive power, and its object-side surface is convex near the optical axis. The fourth lens has positive refractive power, and its object side is convex near the optical axis, and its image side is also convex near the optical axis. The fifth lens has negative refractive power, and its object-side surface is concave near the optical axis; The sixth lens has negative refractive power, and its image-side surface is concave near the optical axis; The optical lens satisfies the following relationship: 30°≤FOV≤40° 1≤CT4 / CT5≤1.4; Wherein, FOV is the maximum field of view of the optical 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.

2. The optical lens as described in claim 1, characterized in that, The optical lens satisfies the following relationship: 5.6 ≤ TTL / ImgH ≤ 7.4, and / or, 2.8 ≤ F / ImgH ≤ 3.6, and / or, 1.5≤FNO≤2; Wherein, TTL is the distance on the optical axis from the object side of the first lens to the imaging surface of the optical lens, ImgH is half the image height corresponding to the maximum field of view of the optical lens, 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 relationship: -1.5≤F1 / F≤-1.1, and / or, 1.2≤F3 / F≤2.8, and / or, -5.2≤F5 / F≤-0.7; Wherein, F is the effective focal length of the optical lens, F1 is the effective focal length of the first lens, F3 is the effective focal length of the third lens, and F5 is the effective focal length of the fifth lens.

4. The optical lens as described in claim 1, characterized in that, The optical lens satisfies the following relationship: -41≤R2 / R1≤-3, and / or, -2.3≤F3 / R4≤-0.8, and / or, 1.9 ≤ |R6 / R5| ≤ 3.7, and / or, -2.4≤R8 / R7≤-0.9; Wherein, R1 is the radius of curvature of the object side of the first lens at the optical axis, R2 is the radius of curvature of the image side of the first lens at the optical axis, F3 is the effective focal length of the third lens, R4 is the radius of curvature of the image side of the second lens at the optical axis, R5 is the radius of curvature of the object side of the third lens at the optical axis, R6 is the radius of curvature of the image side of the third lens at the optical axis, R7 is the radius of curvature of the object side of the fourth lens at the optical axis, and R8 is the radius of curvature of the image side of the fourth lens at the optical axis.

5. The optical lens as described in claim 1, characterized in that, The optical lens further includes an aperture stop, which is disposed between the first lens and the second lens and satisfies the following relationship: 1≤CT4 / CT3≤2.1, and / or, 1.8 ≤ TTL / F ≤ 2.1, and / or, 0.84≤SL / TTL≤0.96; Wherein, CT3 is the thickness of the third lens on the optical axis, TTL is the distance on the optical axis from the object side of the first lens to the imaging surface of the optical lens, F is the effective focal length of the optical lens, and SL is the distance on the optical axis from the aperture to the imaging surface of the optical lens.

6. The optical lens as described in claim 1, characterized in that, The optical lens satisfies the following relationship: -6≤F5 / F4≤-0.6, and / or, 4≤F2 / CT2≤8.8, and / or, -23≤F5 / CT5≤-3; Wherein, F2 is the effective focal length of the second lens, F4 is the effective focal length of the fourth lens, F5 is the effective focal length of the fifth lens, and CT2 is the thickness of the second lens on the optical axis.

7. The optical lens as described in claim 1, characterized in that, The optical lens satisfies the following relationship: 0.95≤SD5 / SD4≤1.2, and / or, 1≤SD10 / SD11≤1.2, and / or, 1.5≤CT3 / ET3≤2.6; Wherein, SD4 is half of the maximum effective aperture of the image side of the second lens, SD5 is half of the maximum effective aperture of the object side of the third lens, SD10 is half of the maximum effective aperture of the image side of the fifth lens, SD11 is half of the maximum effective aperture of the object side of the sixth lens, CT3 is the thickness of the third lens on the optical axis, and ET3 is the distance 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 on the optical axis.

8. The optical lens as described in claim 1, characterized in that, The optical lens satisfies the following relationship: 105°≤(FOV×F) / ImgH≤115°, and / or, 2.7 ≤ F / BFL ≤ 7.8, and / or, 1.9° / mm≤FOV / F≤3.3° / mm; Wherein, F is the effective focal length of the optical lens, ImgH is half the image height corresponding to the maximum field of view of the optical lens, and BFL is the distance on the optical axis from the image side of the sixth lens to the imaging surface of the optical lens.

9. A camera module, characterized in that, include: The optical lens as described in any one of claims 1 to 8; and An image sensor is located on the image side of the optical lens.

10. An electronic device, characterized in that, include: case; and The camera module as described in claim 9 is mounted on the housing.

Images