Optical lens, camera module and electronic equipment

Abstract

The invention discloses an optical lens, a camera module and an electronic device, the requirements of high resolution quality, a large field angle and a large aperture can be considered, stable imaging in different application environments can be realized, the optical lens has six lenses with refractive power, and the optical lens sequentially comprises a first lens with negative refractive power, a second lens with negative refractive power, a third lens with negative refractive power and a fourth lens with negative refractive power from an object side to an image side along an optical axis, and a fourth lens with negative refractive power from the object side to the image side. The object side surface is a convex surface near the optical axis; a second lens element with positive refractive power having an object-side surface being concave in a paraxial region thereof; a third lens element with positive refractive power having an object-side surface being convex in a paraxial region thereof; a fourth lens element with negative refractive power having an object-side surface being concave in a paraxial region thereof; a fifth lens element with positive refractive power having an object-side surface being convex in a paraxial region thereof; a sixth lens element with refractive power having an object-side surface being convex in a paraxial region thereof; the optical lens satisfies the following relational expressions: FOV is more than or equal to 160 degrees and less than or equal to 186 degrees, and FNO is more than or equal to 1.8 degrees and less than or equal to 2.25; wherein the FOV is the maximum field angle of the optical lens, and the FNO is the aperture number of the optical lens.

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 and autonomous driving technology, optical lenses, as a core component of driver assistance systems, are indispensable in everything from reversing camera systems that help drivers observe what's behind them and automatic parking systems that help them park precisely, to dashcams that record the driving process, in-vehicle infotainment systems that record the vehicle's interior status, and road navigation systems that plan driving routes.

[0003] Currently, user demand for in-vehicle interior optical lenses continues to expand, for example, for monitoring packages inside the vehicle, supervising children, and facilitating video calls. The performance of the optical lens directly determines the reliability and safety of environmental perception, obstacle recognition, and driving decisions. To meet user needs, current optical lenses not only need to achieve breakthroughs in high resolution, wide field of view, and low distortion, but also need to adapt to different application environments. For example, optical lenses not only need to provide stable imaging in visible light during the day to meet users' needs for visual video calls, but also need to enable object monitoring in nighttime environments.

[0004] However, existing optical lenses struggle to balance high resolution, wide field of view, large aperture, and the demands of diverse application environments. For instance, some optical lenses, when designed with a large aperture, cannot guarantee high resolution; some optical lenses, while achieving megapixel resolution, cannot meet users' wide field of view requirements; and some optical lenses have weak light transmission capabilities, making it difficult to achieve stable imaging in various application environments. Summary of the Invention

[0005] In view of the above, it is necessary to propose an optical lens, camera module and electronic device that can meet the requirements of high resolution, wide field of view and large aperture, and can stably image in different application environments.

[0006] 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 convex 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 concave 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 its image side being convex near the optical axis; and a fourth lens having negative refractive power, its object side being concave near the optical axis and its image side being convex near the optical axis; and a fifth lens having negative refractive power, its object side being concave near the optical axis and its image side being convex near the optical axis. The fifth lens has positive refractive power, with its object-side surface being convex near the optical axis and its image-side surface being convex near the optical axis; the sixth lens has refractive power, with its object-side surface being convex near the optical axis and its image-side surface being concave near the optical axis; the optical lenses satisfy the following relationships: 160°≤FOV≤186°, 1.8≤FNO≤2.25; where FOV is the maximum field of view of the optical lens, and FNO is the aperture number of the optical lens.

[0007] The aforementioned optical lens, along the optical axis from the object side to the image side, comprises: a first lens with negative refractive power, its object-side and image-side surfaces being convex and concave near the optical axis, respectively; a second lens with positive refractive power, its object-side and image-side surfaces being concave and convex near the optical axis, respectively, which is beneficial for receiving large-angle incident light and can deflect large-angle incident light, providing a basis for the optical lens to achieve a large field of view; a third lens with positive refractive power, its object-side and image-side surfaces being convex and convex near the optical axis, respectively, the third lens can effectively deflect light emitted from the first and second lenses, which is beneficial for adjusting the field curvature and astigmatism that may occur at the edge of the field of view in a large-angle optical lens; furthermore, in the embodiments of this application, the fourth lens has negative refractive power, and the fifth lens has positive refractive power, the object-side and image-side surfaces of the fourth lens being concave and concave near the optical axis, respectively, and the object-side and image-side surfaces of the fifth lens being concave and concave near the optical axis, respectively. The object-side and image-side surfaces are convex and concave near the optical axis, respectively. The fourth and fifth lenses allow light rays exiting from the third lens to be smoothly deflected sequentially by the fourth and fifth lenses, which helps to compress the optical path and further suppress the aberrations of the optical lens. The sixth lens has refractive power, and its object-side and image-side surfaces are convex and concave near the optical axis, respectively. This allows light rays incident from different angles to be smoothly deflected and converged onto the image plane after passing through the fourth, fifth, and sixth lenses in the optical lens. This helps to further balance the aberrations of the optical lens (such as simultaneously suppressing spherical aberration, chromatic aberration, field curvature, and astigmatism), thereby improving image quality and the overall field of view imaging quality. It also helps to compress the optical path, making the structure of the optical lens compact, thus enabling the optical lens to meet the miniaturization requirements while maintaining good image quality.

[0008] Furthermore, by ensuring that the optical lens meets the FOV (Field of View) requirement of 160°≤FOV≤186°, the maximum field of view of the optical lens is controlled within a certain range. This helps the optical lens to have a larger field of view and a wider field of view, meeting the requirements of 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 control the growth of edge aberrations, ensuring that the optical lens has good imaging quality and resolution from the center to the edge of the imaging surface.

[0009] Furthermore, by ensuring that the aperture number of the optical lens meets the requirement of 1.8≤FNO≤2.25, the aperture number of the optical lens is controlled within a certain range. This allows the optical lens to have a large aperture characteristic, thereby obtaining a higher amount of light and achieving high-illuminance optical performance. This can improve the imaging capability of the optical lens in low-light environments, making the captured images clearer. It is also beneficial to improve the imaging capability of the optical lens in daylight, nighttime, alternating light and dark conditions, and complex lighting conditions. This helps to meet the user's need for stable shooting in different application environments, providing stable and clear images, and improving the sensing capability of the optical lens.

[0010] 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.

[0011] The aforementioned camera module includes the aforementioned optical lens, which can meet the requirements of high resolution, wide field of view and large aperture, and can stably image in different application environments.

[0012] 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.

[0013] The aforementioned electronic devices, including the aforementioned optical lenses, can meet the requirements of high resolution, wide field of view, and large aperture, and can achieve stable imaging in different application environments. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the optical lens disclosed in the first embodiment of this application.

[0015] 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.

[0016] Figure 3 This is a schematic diagram of the structure of the optical lens disclosed in the second embodiment of this application.

[0017] 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.

[0018] Figure 5 This is a schematic diagram of the structure of the optical lens disclosed in the third embodiment of this application.

[0019] 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.

[0020] Figure 7 This is a schematic diagram of the structure of the optical lens disclosed in the fourth embodiment of this application.

[0021] 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.

[0022] Figure 9 This is a schematic diagram of the structure of the optical lens disclosed in the fifth embodiment of this application.

[0023] 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.

[0024] Figure 11 This is a schematic diagram of the structure of the camera module according to an embodiment of this application.

[0025] Figure 12 This is a schematic diagram of the structure of an electronic device according to an embodiment of this application.

[0026] 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, filter IR, imaging plane IMG, camera module 200, image sensor 201, electronic device 300, housing 301. Detailed Implementation

[0027] 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.

[0028] Please see Figure 1This application provides an optical lens 100, which has six lenses with refractive power, and includes, in sequence from the object side to the image side along the optical axis O: a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6; during imaging, light rays enter the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, and the sixth lens L6 in sequence from the object side of the first lens L1, and finally form an image on the imaging surface IMG of the optical lens 100.

[0029] The first lens L1 has negative refractive power. The object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is concave near the optical axis O. The second lens L2 has positive refractive power. The object-side surface S3 of the second lens L2 is concave near the optical axis O, and the image-side surface S4 of the second lens L2 is convex near the optical axis O. The third lens L3 has positive refractive power. 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. Lens L4 has negative refractive power. The object-side surface S7 of the fourth lens L4 is concave near the optical axis O, and the image-side surface S8 of the fourth lens L4 is concave near the optical axis O. Lens L5 has positive refractive power. The object-side surface S9 of the fifth lens L5 is convex near the optical axis O, and the image-side surface S10 of the fifth lens L5 is convex near the optical axis O. Lens L6 has refractive power. 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.

[0030] 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 image-side surface S2 being convex and concave near the optical axis O, respectively; a second lens L2 with positive refractive power, its object-side surface S3 and image-side surface S4 being concave and convex near the optical axis O, respectively, which is beneficial for receiving large-angle incident light and can deflect large-angle incident light, providing a basis for the optical lens 100 to achieve a large field of view; and a third lens L3 with positive refractive power, its object-side surface S1 and image-side surface S2 being convex and concave near the optical axis O, respectively. The object-side surface S7 and image-side surface S8 of the fourth lens L3 are convex and concave respectively at the near-optical axis O. The third lens L3 can effectively deflect the light rays emitted from the first lens L1 and the second lens L2, which is beneficial for adjusting the field curvature and astigmatism of the edge field of view that may occur in the large-angle optical lens 100. Furthermore, in this embodiment, the fourth lens L4 has negative refractive power, and the fifth lens L5 has positive refractive power. The object-side surface S7 and image-side surface S8 of the fourth lens L4 are concave and concave respectively at the near-optical axis O. S9 and the image-side surface S10 are convex and concave respectively at near the optical axis O. The fourth lens L4 and the fifth lens L5 allow light rays emitted from the third lens L3 to be smoothly deflected by the fourth lens L4 and the fifth lens L5 in sequence, which helps to compress the optical path and further suppress the aberrations of the optical lens 100. The sixth lens L6 has refractive power, and its object-side surface S11 and image-side surface S12 are convex and concave respectively at near the optical axis O. This allows light rays incident from different angles to be smoothly deflected and converged onto the imaging plane IMG when passing through the fourth lens L4, the fifth lens L5 and the sixth lens L6 in the optical lens 100. This helps to further balance 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 and the full field of view imaging quality. At the same time, it helps to compress the optical path, making the structure of the optical lens 100 compact, so that the optical lens 100 meets the miniaturization requirements while having good imaging quality.

[0031] Furthermore, the optical lens 100 satisfies the following relationship: 160° ≤ FOV ≤ 186°, where FOV is the maximum field of view of the optical lens 100. For example, FOV can be 160°, 161°, 162°, 163°, 164°, 165°, 166°, 167°, 168°, 169°, 170°, 171°, 172°, 173°, 174°, 175°, 176°, 177°, 178°, 179°, 180°, 181°, 182°, 183°, 184°, 185°, 186°, etc. Controlling the maximum field of view of the optical lens 100 within a certain range is beneficial for the optical lens 100 to have a larger field of view and a wider field of view, thus meeting the requirements of a large field of view, thereby expanding the shooting range of the optical lens 100 and acquiring image information within a wider field of view. At the same time, it can effectively control the growth of edge aberrations and ensure that the imaging surface IMG of the optical lens 100 has good imaging quality and resolution from the center to the edge.

[0032] Furthermore, the optical lens 100 satisfies the following relationship: 1.8 ≤ FNO ≤ 2.25, where FNO is the aperture number of the optical lens 100. For example, FNO can be 1.80, 1.85, 1.90, 1.95, 2.00, 2.05, 2.10, 2.15, 2.20, 2.25, etc. Controlling the aperture number of the optical lens 100 within a certain range is beneficial for giving the optical lens 100 a large aperture characteristic, thereby obtaining higher light intake and achieving high-illuminance optical performance. This can improve the imaging capability of the optical lens 100 in low-light environments, making the captured images clearer. It also helps improve the imaging capability of the optical lens 100 under daytime, nighttime, alternating light and dark, and complex lighting conditions, thus helping to meet the user's need for stable shooting in different application environments, providing stable and clear images, and improving the sensing capability of the optical lens 100.

[0033] In some embodiments, when the optical lens 100 is applied to electronic devices 300 such as automotive lenses (e.g., automotive ADAS lenses, OMS / DMS lenses, or reversing camera lenses), monitors, etc., the materials of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, and the sixth lens L6 can all be glass. This allows the optical lens 100 to have 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 300 such as mobile phones, tablets, smartwatches, thumb cameras, drones, etc., the materials of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, and the sixth lens L6 can all be plastic to reduce the overall weight of the optical lens 100 and improve its lightweight design. 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 lens to achieve better image quality, it also reduces the processing cost and weight of the lens, thereby reducing the processing cost and overall weight of the optical lens 100.

[0034] In some embodiments, spherical lenses are considered to have the advantages of simple manufacturing process and low production cost, and 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 first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, and the sixth lens L6 (e.g., the second lens L2, or a combination of the second lens L2, the fourth lens L4, the fifth lens L5, and the sixth lens L6) can be an aspherical lens. In this way, the aspherical design not only improves the manufacturability of the lens and is beneficial to the 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 solve problems such as unclear imaging, distorted field of view, or narrow field of view even when it is small and thin. Furthermore, the optical lens 100 does not need to set too many lenses to have good imaging quality and high resolution. At the same time, it is beneficial to shorten the length of the optical lens 100, thereby helping to meet 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 spherical, aspherical, or any combination of spherical and aspherical. For example, the object side surface S3 of the second lens L2 is spherical, and the image side surface S4 of the second lens L2 is aspherical. The specific selection can be made according to actual needs, so no specific limitation is made in this embodiment.

[0035] 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 aperture stop STO is disposed between the second lens L2 and the third lens L3. Dividing the optical lens 100 into a front lens group and a rear lens group by the aperture stop STO facilitates the rational distribution of the refractive power of the optical lens 100, thereby further enhancing the large field of view characteristic of the optical lens 100. It is understood that in other embodiments, the aperture stop STO may also be disposed between the third lens L3 and the fourth lens L4, or between other lenses, depending on the actual situation. This embodiment does not specifically limit this.

[0036] In some embodiments, the optical lens 100 further includes a filter IR, which is disposed between the image-side surface S12 of the sixth lens L6 and the imaging surface IMG of the optical lens 100. Optionally, the filter IR can be a dual-pass filter, that is, it can simultaneously transmit high levels of visible light and transmit a portion of infrared light, thereby achieving different wavelength selection. It can realize both visible light imaging and infrared imaging, thus achieving day and night versatility, and further helping to meet the stable imaging requirements of the optical lens 100 in different application environments. Optionally, the filter IR can also be an infrared cutoff filter to filter out infrared light and allow visible light to pass through, making the imaging more in line with the visual experience of the human eye, thereby improving image quality. In other embodiments, the IR filter can 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, which is beneficial to further improving the imaging capability of the optical lens 100 in low-light environments, making the captured images clearer. It is also beneficial to further improve the imaging capability of the optical lens 100 under daytime, nighttime, alternating light and dark, and complex lighting conditions, thereby meeting the user's need for stable shooting in different application environments, providing stable and clear images, and improving the sensing capability of the optical lens 100. It is understood that the IR filter can be made of plastic, optical glass with coating, or other materials, and can be selected according to actual needs. This embodiment does not make specific limitations.

[0037] In some embodiments, the optical lens 100 further includes a protective glass CG disposed between the image-side surface of the sixth lens L6 and the imaging surface IMG of the optical lens 100.

[0038] 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. At the same time, it is beneficial to shorten the total optical length of the optical lens 100, which is conducive to miniaturization design and reducing the size of the electronic device 300 using the optical lens 100. In some embodiments, the image-side surface S10 of the fifth lens L5 and the object-side surface S11 of the sixth lens L6 can be cemented together to form a cemented lens. The image-side surface S10 of the fifth lens L5 and the object-side surface S11 of the sixth lens L6 are cemented surfaces. That is, the fifth lens L5 and the sixth lens L6 are combined to form a cemented lens group. This can be selected according to actual needs and is not specifically limited in this embodiment.

[0039] In some embodiments, the optical lens 100 satisfies the following relationship: 5 ≤ TTL / F ≤ 6.9, where TTL is the distance on the optical axis O from the object 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. Exemplarily, TTL / F can be 5.0, 5.1, 5.2, 5.3, 5.4, 5.5, 5.6, 5.7, 5.8, 5.7, 5.9, 6.0, 6.1, 6.2, 6.3, 6.4, 6.5, 6.6, 6.7, 6.8, 6.9, etc. By ensuring that the optical lens 100 satisfies the above-mentioned relationship, and by rationally configuring the ratio of the total optical length to the effective focal length of the optical lens 100 within a certain range, the optical lens 100 can meet the requirements of miniaturization design while also taking into account the large field of view characteristics of the optical lens 100. The total optical length of the optical lens 100 can be reasonably controlled, which is beneficial for the optical lens 100 to have both small size and high imaging quality.

[0040] In some embodiments, the optical lens 100 satisfies the following relationship: 3.7 ≤ TTL / ImgH ≤ 4.6, where TTL is the distance on the optical axis O from the object 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. For example, TTL / ImgH can be 3.7, 3.8, 3.9, 4.0, 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, etc. By ensuring that the optical lens 100 satisfies the above relationship and rationally configuring the range of TTL / ImgH, it is beneficial to limit the total optical length of the optical lens 100, enabling a miniaturized design of the optical lens 100 and meeting the user's demand for lightweight optical lens 100.

[0041] In some embodiments, the optical lens 100 satisfies the following relationship: 67° ≤ FOV / F ≤ 87°; 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. Exemplarily, FOV / F can be 67°, 68°, 69°, 70°, 71°, 72°, 73°, 74°, 75°, 76°, 77°, 78°, 79°, 80°, 81°, 82°, 83°, 84°, 85°, 86°, etc. Controlling the ratio of the maximum field of view to the effective focal length of the optical lens 100 within a certain range is beneficial for the optical lens 100 to balance various aberrations with a wider field of view, and for the optical lens 100 to have good imaging quality and resolution from the center to the edge of the imaging plane IMG.

[0042] In some embodiments, the optical lens 100 satisfies the following relationship: 3.3 ≤ F2 / F ≤ 7.3, where F2 is the effective focal length of the second lens L2 and F is the effective focal length of the optical lens 100. Exemplarily, F2 / F can be 3.3, 3.5, 3.7, 3.9, 4.1, 4.3, 4.5, 4.7, 4.9, 5.1, 5.3, 5.5, 5.7, 5.9, 6.1, 6.4, 6.5, 6.7, 6.9, 7.1, 7.3, etc. By making the optical lens 100 satisfy the above relationship, the second lens L2 can have an appropriate positive refractive power, which helps to reduce the degree of refraction of light rays emitted from the first lens L1, avoids excessive convergence of light rays in the optical lens 100, and helps to balance the aberrations generated by the first lens L1 and the second lens L2.

[0043] In some embodiments, the optical lens 100 satisfies the following relationship: 0.5 ≤ |F6 / F2| ≤ 7.2, where F2 is the effective focal length of the second lens L2 and F6 is the effective focal length of the sixth lens L6; exemplarily, |F6 / F2| can be 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.1, 7.2, etc. By making the optical lens 100 satisfy the above relationship, the second lens L2 and the sixth lens L6 can have appropriate refractive forces, which can improve the lens's temperature drift stability performance, help reduce the impact of ambient temperature on the optical lens 100, thereby further meeting the user's need for stable shooting in different application environments, improving the sensing capability of the optical lens 100, and also helping to meet the compactness requirements of the optical lens 100.

[0044] In some embodiments, the optical lens 100 satisfies the following relationship: 6 ≤ |F45 / F| ≤ 16, where F45 is the combined focal length of the fourth lens L4 and the fifth lens L5, and F is the effective focal length of the optical lens 100. For example, |F45 / F| can be 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, etc. By ensuring the optical lens 100 satisfies the above relationship, magnification chromatic aberration and axial chromatic aberration can be effectively corrected. This facilitates the control of the optical power and chromatic aberration correction capability of the cemented lens group composed of the fourth lens L4 and the fifth lens L5, optimizes the flatness of the image plane and the telecentricity of the image side, and thus improves the imaging quality of the edge field of view. When this relationship exceeds the upper limit, the curvature of the cemented lens may become excessively curved, potentially introducing excessively large higher-order aberrations. If the relationship exceeds the lower limit, the optical power of the cemented lens is too weak, resulting in insufficient chromatic aberration correction capability and inability to effectively balance the chromatic aberration of the optical lens 100, which may affect the imaging quality of the optical lens 100. Therefore, the above setting is beneficial to reduce tolerance sensitivity and improve the imaging quality of the optical lens 100.

[0045] In some embodiments, the optical lens 100 satisfies the following relationship: 0.9≤BFL / F≤1.7; where BFL is the distance on the optical axis O from the image side of the sixth lens L6 to the imaging plane IMG of the optical lens 100, and F is the effective focal length of the optical lens 100. For example, BFL / F can be 0.90, 0.95, 0.98, 1.00, 1.05, 1.15, 1.20, 1.25, 1.30, 1.35, 1.40, 1.45, 1.50, 1.55, 1.60, 1.65, 1.70, etc. By making the optical lens 100 satisfy the above relationship, the ratio of the distance from the image side surface S12 of the sixth lens L6 to the imaging plane IMG of the optical lens 100 on the optical axis O to the effective focal length of the optical lens 100 can be reasonably constrained within a certain range. This can shorten the back focal length of the optical lens 100, avoid the optical lens 100 from being too large, and help to further meet the user's demand for lightweight optical lens 100.

[0046] In some embodiments, the optical lens 100 satisfies the following relationship: 3.2 ≤ ∑CT / ∑AT ≤ 4.9, where ∑CT is the sum of the thicknesses of all lenses from the first lens L1 to the sixth lens L6 along the optical axis O, and ∑AT is the sum of the air gaps between two adjacent lenses from the first lens L1 to the sixth lens L6. Exemplarily, ∑CT / ∑AT can be 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4.0, 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 4.7, 4.8, 4.9, etc. By making the optical lens 100 satisfy the above relationship, the air gaps between the lenses can be controlled more effectively, and the thickness of each lens can be controlled simultaneously, effectively shortening the step difference between the lenses of the optical lens 100, and facilitating the support design of the lenses of the optical lens 100, thereby improving the assembly yield of the optical lens 100.

[0047] In some embodiments, the optical lens 100 satisfies the following relationship: 4≤TTL / BFL≤5.4, where TTL is the distance from the object side surface S12 of the first lens L1 to the imaging surface IMG of the optical lens 100 on the optical axis O, and BFL is the distance from the image side surface S12 of the sixth lens L6 to the imaging surface IMG of the optical lens 100 on the optical axis O. For example, TTL / BFL can be 4.0, 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 4.7, 4.8, 4.9, 5.0, 5.1, 5.2, 5.3, 5.4, etc. By making the optical lens 100 satisfy the above relationship, the ratio of the total optical length and the optical back focal length of the optical lens 100 can be controlled within a certain range. While achieving lens miniaturization, it has the characteristic of a long back focal length, which allows the edge beam to be incident on the image sensor 201 at a gentler angle. This makes the matching between the incident angle of the main ray and the image sensor 201 better, which helps to reduce the ghost energy generated by the reflection of the optical lens 100 and the IR center of the filter.

[0048] In some embodiments, the optical lens 100 satisfies the following relationship: 4≤TTL / (CT4+CT5)≤4.8, where 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, 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, TTL / (CT4+CT5) can be 4, 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 4.7, 4.8, etc. By making the optical lens 100 satisfy the above relationship, the center thickness of the cemented lens (i.e., the fourth lens L4 and the fifth lens L5) can be increased while controlling the total optical length. This enhances the ability of the cemented lens to control light, allowing more light to pass through the cemented lens and enter the sixth lens L6, which is beneficial for increasing the aperture and improving relative illumination.

[0049] In some embodiments, the optical lens 100 satisfies the following relationship: 3.5 ≤ F2 / CT2 ≤ 9.6; 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. Exemplarily, F2 / CT2 can be 3.5, 3.7, 3.9, 4, 4.3, 4.5, 4.7, 5, 5.3, 5.5, 5.7, 5.9, 6, 6.3, 6.5, 6.7, 7, 7.3, 7.5, 7.7, 7.9, 8, 8.3, 8.5, 8.9, 9, 9.3, 9.5, 9.6, etc. By ensuring that the optical lens 100 satisfies the above relationship, it is beneficial to reasonably constrain the positive refractive power and thickness of the second lens L2, facilitating aberration correction and improving the assembly yield of the optical lens 100.

[0050] In some embodiments, the optical lens 100 satisfies the following relationship: 2.7≤R3 / (R4+CT2)≤6.8, where R3 is the radius of curvature of the object side surface S3 of the second lens L2 at the optical axis O, R4 is the radius of curvature of the image side surface S4 of the second lens L2 at the optical axis O, and CT2 is the thickness of the second lens L2 on the optical axis O. For example, R3 / (R4+CT2) can be 2.7, 2.9, 3, 3.1, 3.3, 3.5, 3.7, 3.9, 4, 4.1, 4.3, 4.5, 4.7, 4.9, 5, 5.1, 5.3, 5.5, 5.7, 5.9, 6, 6.1, 6.3, 6.5, 6.6, 6.7, 6.8, etc. By making the optical lens 100 satisfy the above relationship, the curvature radius of the object side surface S3 and image side surface S4 of the second lens L2 at the optical axis O and the thickness of the second lens L2 on the optical axis O can be reasonably configured. This is beneficial to reducing the front port diameter of the optical lens 100, miniaturizing the optical lens 100, and reducing costs. In addition, the above settings can also effectively reduce the difficulty of correcting the edge field distortion of the optical lens 100, so that the distortion of the optical lens 100 can be controlled within a reasonable range, thereby improving the imaging quality of the entire field of view.

[0051] In some embodiments, the optical lens 100 satisfies the following relationship: |(R5-R6) / (R5+R6)|≥2.5, 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. Exemplarily, |(R5-R6) / (R5+R6)| can be 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, 12, 13, 15, 20, 50, 100, 200, 300, 400, etc. When light exits from the first lens L1 and the second lens L2, which have strong refractive power, it may cause edge field rays to easily enter the imaging plane IMG, resulting in… To reduce the field curvature, by ensuring that the optical lens 100 satisfies the above-mentioned relationship, the degree of refraction of light rays emitted from the first lens L1 and the second lens L2 can be reduced. This effectively collects and compresses the light rays emitted from the first lens L1 and the second lens L2, allowing the light rays to smoothly transition into the rear optical system (i.e., the third lens L3, the fourth lens L4, the fifth lens L5, and the sixth lens L6). This reduces the aberration correction pressure on the rear lens of the optical lens 100 and is also beneficial for correcting STO aberrations.

[0052] In some embodiments, the optical lens 100 satisfies the following relationship: 0 ≤ R11 / R12 ≤ 1.3; where R11 is the radius of curvature of the object-side surface S11 of the sixth lens L6 at the optical axis O, and R12 is the radius of curvature of the image-side surface S12 of the sixth lens L6 at the optical axis O. Exemplarily, R11 / R12 can be 0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, etc. By making the optical lens 100 satisfy the above relationship, it is beneficial to control the shape of the sixth lens L6, correct the aberrations generated by the sixth lens L6 itself, and improve the imaging quality of the optical lens 100.

[0053] In some embodiments, the optical lens 100 satisfies the following relationship: 1.05≤SD2 / SD3≤1.15, where SD2 is half of the maximum effective aperture of the image side surface S2 of the first lens L1, and SD3 is half of the maximum effective aperture of the object side surface S3 of the second lens L2. For example, SD2 / SD3 can be 1.05, 1.06, 1.07, 1.08, 1.09, 1.10, 1.11, 1.12, 1.13, 1.14, 1.15, etc. By making the optical lens 100 satisfy the above relationship, the ratio of the maximum effective aperture of the image side surface S2 of the first lens L1 and the object side surface S3 of the second lens L2 can be reasonably constrained within a certain range, effectively controlling the shape and surface profile of the first lens L1 and the second lens L2. This helps to reduce the assembly sensitivity of the optical lens 100 and ensures that beams in each field of view, especially the edge field of view beams, can pass through the first lens L1 and the second lens L2 smoothly and without obstruction. This creates favorable conditions for aberration balance correction while achieving high relative illumination, thereby helping to reduce the aberrations generated by the first lens L1 and the second lens L2 in the optical lens 100, and further improving the imaging quality of the optical lens 100.

[0054] In some embodiments, the optical lens 100 satisfies the following relationship: 0.8 ≤ SD5 / SD4 ≤ 1.1, where SD4 is half the maximum effective aperture of the image-side surface of the second lens L2, and SD5 is half the maximum effective aperture of the object-side surface of the third lens L3. For example, SD5 / SD4 can be 0.8, 0.85, 0.9, 0.95, 1.0, 1.05, 1.10, etc. By ensuring that the optical lens 100 satisfies the above relationship, the ratio of half the maximum effective aperture of the image-side surface S4 of the second lens L2 to half the maximum effective aperture of the object-side surface S5 of the third lens L3 can be reasonably constrained within a certain range. This effectively controls the shape and surface profile of the second lens L2 and the third lens L3, which is beneficial for reducing the overall aberration of the optical lens 100 and improving the imaging quality of the optical lens 100.

[0055] In some embodiments, the optical lens 100 satisfies the following relationship: 1.1 ≤ ImgH / SD12 ≤ 1.25; where SD12 is half the maximum effective aperture of the image-side surface of the sixth lens L6, and ImgH is half the image height corresponding to the maximum field of view of the optical lens 100. For example, ImgH / SD12 can be 1.1, 1.15, 1.20, 1.25, etc.; by making the optical lens 100 satisfy the above relationship, the optical lens 100 can meet the requirements of adapting to a large-sized imaging surface IMG, while taking into account the miniaturization and large aperture design of the side of the optical lens 100 away from the imaging surface IMG.

[0056] In some embodiments, the optical lens 100 satisfies the following relationship: 5 ≤ SD1 / SAGS1 ≤ 6.2, where SD1 is half the maximum effective aperture of the object-side surface of the first lens L1, and SAGS1 is the sag of the edge of the effective optical diameter of the object-side surface of the first lens L1. For example, SD1 / SAGS1 can be 5, 5.1, 5.2, 5.3, 5.4, 5.5, 5.6, 5.7, 5.8, 5.9, 6.0, 6.1, 6.2, etc. By making the optical lens 100 satisfy the above relationship, the shape of the object-side surface S1 of the first lens L1 is effectively constrained, enabling the first lens L1 to achieve smooth control over the direction of light, avoiding a sharp increase in aberrations due to excessive curvature of the object-side surface S1 of the first lens L1, or loss of control over the optical path due to excessive flatness; it also helps to correct the aberrations of the optical lens 100.

[0057] In some embodiments, the optical lens 100 satisfies the following relationship: -0.95 ≤ SAGS2 / SAGS3 ≤ -0.4, where SAGS2 is the sagitta of the edge of the effective optical diameter of the image-side surface S1 of the first lens L1, and SAGS3 is the sagitta of the edge of the effective optical diameter of the object-side surface S3 of the second lens L2. For example, SAGS2 / SAGS3 can be -0.95, -0.9, -0.85, -0.8, -0.75, -0.7, -0.65, -0.6, -0.55, -0.5, -0.45, -0.4, etc. By making the optical lens 100 satisfy the above relationship and rationally configuring the sagitta ratio of the image-side surface S2 of the first lens L1 and the object-side surface S3 of the second lens L2, the overall volume of the first lens L1 and the second lens L2 can be compressed to a large extent, reducing the risk of ghosting.

[0058] In some embodiments, the optical lens 100 satisfies the following relationship: |SAGS11 / SAGS12|≤8.5; where SAGS11 is the sag of the edge of the effective optical diameter of the object-side surface S11 of the sixth lens L6, and SAGS12 is the sag of the edge of the effective optical diameter of the image-side surface S12 of the sixth lens L6. For example, |SAGS11 / SAGS12| can be 8.5, 8.3, 8.1, 8, 7.9, 7.5, 7.3, 7.1, 7, 6.5, 6.3, 6.1, 6, 5, 4, 3, 2, 1, 0, etc. By making the optical lens 100 satisfy the above relationship, the shape of the sixth lens L6 can be well controlled, which is beneficial to the forming and processing of the sixth lens L6.

[0059] In some embodiments, the optical lens 100 satisfies the following relationship: 0.022≤TTL / ImgH / FOV≤0.027, where TTL is the distance from the object side of the first lens L1 to the imaging surface IMG of the optical lens 100 on the optical axis O, ImgH is half of the image height corresponding to the maximum field of view of the optical lens 100, and FOV is the maximum field of view of the optical lens 100. For example, TTL / ImgH / FOV can be 0.022, 0.023, 0.024, 0.025, 0.026, 0.027, etc. By making the optical lens 100 satisfy the above relationship, 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, the ratio of the maximum field of view of the optical lens 100 to half of the image height, and the maximum field of view of the optical lens 100 can be reasonably configured, which is beneficial to improving the resolution of the optical lens 100 in the full field of view and improving the imaging quality of the edge field of view. The above relationship reflects the constraints of the optical lens 100 in terms of target surface size and volume. Under the same imaging surface IMG and the same image height, the total length of the optical lens 100 is effectively limited, which helps to realize the miniaturization of the optical lens 100.

[0060] In some embodiments, the optical lens 100 satisfies the following relationship: 0.005 ≤ SD1 / ImgH / FOV ≤ 0.007, where SD1 is half the maximum effective aperture of the object-side surface S1 of the first lens L1, ImgH is half the image height corresponding to the maximum field of view of the optical lens 100, and FOV is the maximum field of view of the optical lens 100. For example, SD1 / ImgH / FOV can be 0.005, 0.0055, 0.006, 0.0065, 0.007, etc. By making the optical lens 100 satisfy the above relationship, a balance can be achieved between the front aperture size of the optical lens 100, the field of view FOV, and the image plane, which is beneficial for reducing the front aperture of the optical lens 100, miniaturizing the optical lens 100, and reducing costs.

[0061] In some embodiments, the optical lens 100 satisfies the following relationship: 72°≤FOV / FNO≤98°; where FOV is the maximum field of view of the optical lens 100 and FNO is the aperture number of the optical lens 100. For example, the FOV / FNO can be 72°, 73°, 74°, 75°, 76°, 77°, 78°, 79°, 80°, 81°, 82°, 83°, 84°, 85°, 86°, 90°, 91°, 92°, 93°, 94°, 95°, 96°, etc. By making the optical lens 100 satisfy the above relationship, the ratio of the maximum field of view of the optical lens 100 to the aperture number is controlled within a certain range. This allows the optical lens 100 to be matched with different aperture sizes, which can better balance the relationship between the field of view and the aperture size of the optical lens 100. This is beneficial for obtaining higher light intake, 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 enhancing the sensing capability of the optical lens 100.

[0062] In some embodiments, the optical lens 100 satisfies the following relationship: -1.7 ≤ F1 / F ≤ -1.4; where F is the effective focal length of the optical lens 100 and F1 is the effective focal length of the first lens L1. For example, F1 / F can be -1.7, -1.6, -1.5, -1.4, etc. By making the optical lens 100 satisfy the above relationship, the ratio of the effective focal length of the first lens L1 to the effective focal length of the optical lens 100 is reasonably constrained within a certain range, giving the first lens L1 negative refractive power. This is beneficial for the optical lens 100 to collect incident light rays at large angles, enabling the optical lens 100 to achieve a large field of view.

[0063] In some embodiments, the optical lens 100 satisfies the following relationship: 1.4 ≤ F3 / F ≤ 1.9; where F is the effective focal length of the optical lens 100 and F3 is the effective focal length of the third lens L3. For example, F3 / F can be 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, etc. By ensuring that the optical lens 100 satisfies the above relationship, the ratio of the effective focal length of the third lens L3 to the effective focal length of the optical lens 100 is reasonably constrained within a certain range, enabling the third lens L3 to have positive refractive power and effectively converge the diverging light rays emitted by the front lens group, thereby improving the imaging quality of the optical lens 100.

[0064] In some embodiments, the optical lens 100 satisfies the following relationship: -1.3 ≤ F4 / F ≤ -0.9; where F is the effective focal length of the optical lens 100 and F4 is the effective focal length of the fourth lens L4. For example, F4 / F can be -1.3, -1.2, -1.1, -1.0, -0.9, etc. By making the optical lens 100 satisfy the above relationship, the ratio of the effective focal length of the fourth lens L4 to the effective focal length of the optical lens 100 is reasonably constrained within a certain range, giving the fourth lens L4 negative refractive power, which is beneficial for converging light and improving the imaging quality of the optical lens 100.

[0065] In some embodiments, the optical lens 100 satisfies the following relationship: 1.1 ≤ F5 / F ≤ 1.7; where F is the effective focal length of the optical lens 100, and F5 is the effective focal length of the fifth lens L5. For example, F5 / F can be 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, etc. By ensuring that the optical lens 100 satisfies the above relationship, the ratio of the overall effective focal length of the optical lens 100 to the effective focal length of the fifth lens L5 is reasonably constrained within a certain range, which facilitates a smooth transition of light to the imaging plane IMG and improves the resolving power of the optical lens 100.

[0066] In some embodiments, the optical lens 100 satisfies the following relationship: 4 ≤ |F6 / F| ≤ 32; where F6 is the effective focal length of the sixth lens L6, and F is the effective focal length of the optical lens 100. For example, |F6 / F| can be 4, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, etc. By ensuring that the optical lens 100 satisfies the above relationship, the ratio of the effective focal length of the sixth lens L6 to the effective focal length of the optical lens 100 can be effectively constrained within a certain range, which is beneficial for further correcting the aberrations of the optical lens 100 and improving the imaging quality of the optical lens 100.

[0067] In some embodiments, the optical lens 100 satisfies the following relationship: 3.9 ≤ R1 / R2 ≤ 5.4; 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. For example, R1 / R2 can be 3.9, 4.0, 4.2, 4.4, 4.6, 4.8, 5.0, 5.2, 5.4, etc. By ensuring that the optical lens 100 satisfies the above relationship, the ratio of the radii of curvature of the object-side surface S1 and the image-side surface S2 of the first lens L1 is reasonably constrained within a certain range. This allows for a reasonable setting of the surface shape difference of the first lens L1, which is beneficial for controlling the shape of the first lens L1, correcting aberrations generated by the first lens L1 itself, improving imaging quality, and also reducing the processing difficulty of the first lens L1.

[0068] In some embodiments, the optical lens 100 satisfies the following relationship: 1 ≤ R3 / R4 ≤ 2.1; where 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. Exemplarily, R3 / R4 can be 1, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, etc. By ensuring the optical lens 100 satisfies the above relationship, the ratio of the radii of curvature of the object-side surface S3 and the image-side surface S4 of the second lens L2 is reasonably constrained within a certain range. This allows for a reasonable setting of the surface shape difference of the second lens L2, which is beneficial for controlling the shape of the second lens L2, correcting aberrations generated by the second lens L2 itself, improving image quality, and also reducing the processing difficulty of the second lens L2.

[0069] In some embodiments, the optical lens 100 satisfies the following relationship: -2.2 ≤ R5 / R6 ≤ -0.9; 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. For example, R5 / R6 can be -2.2, -2.0, -1.8, -1.6, -1.4, -1.2, -1.0, -0.9, etc. By ensuring that the optical lens 100 satisfies the above relationship, the ratio of the radii of curvature of the object-side surface S5 and the image-side surface S6 of the third lens L3 is reasonably constrained within a certain range. This allows for a reasonable setting of the surface shape difference of the third lens L3, which is beneficial for controlling the shape of the third lens L3, correcting the aberrations generated by the third lens L3 itself, improving image quality, and also reducing the processing difficulty of the third lens L3.

[0070] In some embodiments, the optical lens 100 satisfies the following relationship: -6 ≤ R7 / R8 ≤ -2; where R7 is the radius of curvature of the object-side surface S7 of the fourth lens L4 at the optical axis O, and R8 is the radius of curvature of the image-side surface S8 of the fourth lens L4 at the optical axis O. Exemplarily, R7 / R8 can be -6, -5, -4, -3, -2, etc. By ensuring that the optical lens 100 satisfies the above relationship, it is beneficial to control the shape of the fourth lens L4, correct its own aberrations, and improve the imaging quality of the optical lens 100.

[0071] In some embodiments, the optical lens 100 satisfies the following relationship: -8 ≤ R10 / R9 ≤ -1; where R10 is the radius of curvature of the object-side surface S11 of the sixth lens L6 at the optical axis O, and R8 is the radius of curvature of the image-side surface S12 of the sixth lens L6 at the optical axis O. Exemplarily, R10 / R9 can be -8, -7, -6, -5, -4, -3, -2, -1, etc. By ensuring that the optical lens 100 satisfies the above relationship, it is beneficial to control the shape of the sixth lens L6, correct its own aberrations, and improve the imaging quality of the optical lens 100.

[0072] 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.

[0073] The optical lens 100 of this embodiment will be described in detail below with reference to specific parameters.

[0074] 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, a second lens L2, a third lens L3, an aperture stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a filter IR, and a protective glass CG, arranged sequentially along the optical axis O from the object side to the image side. 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 negative refractive power, the fifth lens L5 has positive refractive power, and the sixth lens L6 has positive refractive power.

[0075] The object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is concave near the optical axis O; the object-side surface S3 of the second lens L2 is concave near the optical axis O, and the image-side surface S4 of the second lens L2 is convex near the optical axis O; the object-side surface S5 of the third lens L3 is convex near the optical axis O, and the image-side surface S6 of the third lens L3 is convex near the optical axis O; the object-side surface S7 of the fourth lens L4 is concave near the optical axis O, and the image-side surface S8 of the fourth lens L4 is concave near the optical axis O; the object-side surface S9 of the fifth lens L5 is convex near the optical axis O, and the image-side surface S10 of the fifth lens L5 is convex near the optical axis O; the object-side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image-side surface S12 of the sixth lens L6 is concave near the optical axis O.

[0076] 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 for each lens is the thickness of that lens on the optical axis O, and the second value is the distance from the image-side surface of that 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 555.0000 nm.

[0077] In the first embodiment, the object-side surface S3 and image-side surface S4 of the second lens L2 are both aspherical, the object-side surface S7 and image-side surface S8 of the fourth lens L4, the object-side surface S9 and image-side surface S10 of the fifth lens L5, and the object-side surface S11 and image-side surface S12 of the sixth lens L6 are all aspherical. Table 1b gives the conic constant k and higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for the aspherical mirrors in the first embodiment.

[0078] 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 950.0000 nm, 650.0000 nm, 610.0000 nm, 555.0000 nm, 510.0000 nm, 480.0000 nm, and 435.0000 nm. The horizontal axis along the X-axis represents the focus offset 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 an astigmatism diagram of the optical lens 100 in the first embodiment at a wavelength of 555.0000 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 555.0000 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.

[0079] Second Embodiment The structural schematic diagram of the optical lens 100 disclosed in the second embodiment of this application is shown below. Figure 3 As shown, the optical lens 100 includes a first lens L1, a second lens L2, a third lens L3, an aperture stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a filter IR, and a protective glass CG, arranged sequentially along the optical axis O from the object side to the image side. 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 negative refractive power, the fifth lens L5 has positive refractive power, and the sixth lens L6 has negative refractive power.

[0080] The object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is concave near the optical axis O; the object-side surface S3 of the second lens L2 is concave near the optical axis O, and the image-side surface S4 of the second lens L2 is convex near the optical axis O; the object-side surface S5 of the third lens L3 is convex near the optical axis O, and the image-side surface S6 of the third lens L3 is convex near the optical axis O; the object-side surface S7 of the fourth lens L4 is concave near the optical axis O, and the image-side surface S8 of the fourth lens L4 is concave near the optical axis O; the object-side surface S9 of the fifth lens L5 is convex near the optical axis O, and the image-side surface S10 of the fifth lens L5 is convex near the optical axis O; the object-side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image-side surface S12 of the sixth lens L6 is concave near the optical axis O.

[0081] 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. 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 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 555.0000 nm.

[0082] In the second embodiment, the object-side surface S3 and image-side surface S4 of the second lens L2 are both aspherical, the object-side surface S7 and image-side surface S8 of the fourth lens L4, the object-side surface S9 and image-side surface S10 of the fifth lens L5, and the object-side surface S11 and image-side surface S12 of the sixth lens L6 are all aspherical. Table 2b gives the conic constant k and higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for the aspherical mirrors in the second embodiment.

[0083] Table 2a Table 2b Please see Figure 4 (A) in the middle Figure 4 Figure (A) shows longitudinal spherical aberration diagrams of the optical lens 100 in the second embodiment at wavelengths of 650.0000 nm, 610.0000 nm, 555.0000 nm, 510.0000 nm, 480.0000 nm, and 435.0000 nm. Figure 4 As can be seen from (A) in the diagram, the spherical aberration value of the optical lens 100 in the second embodiment is better, indicating that the imaging quality of the optical lens 100 in this embodiment is better. Please refer to [link / reference]. Figure 4 (B) in the middle Figure 4 Image (B) shows an astigmatism diagram of the optical lens 100 in the first embodiment at a wavelength of 510.0000 nm. Figure 4 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 4 (C) in the middle, Figure 4 Figure (C) shows the distortion curve of the optical lens 100 in the second embodiment at a wavelength of 510.0000 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 4 As can be seen from (C), the distortion of the optical lens 100 is well corrected at this wavelength.

[0084] 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, a second lens L2, a third lens L3, an aperture stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a filter IR, and a protective glass CG, arranged sequentially along the optical axis O from the object side to the image side. 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 negative refractive power, the fifth lens L5 has positive refractive power, and the sixth lens L6 has positive refractive power.

[0085] The object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is concave near the optical axis O; the object-side surface S3 of the second lens L2 is concave near the optical axis O, and the image-side surface S4 of the second lens L2 is convex near the optical axis O; the object-side surface S5 of the third lens L3 is convex near the optical axis O, and the image-side surface S6 of the third lens L3 is convex near the optical axis O; the object-side surface S7 of the fourth lens L4 is concave near the optical axis O, and the image-side surface S8 of the fourth lens L4 is concave near the optical axis O; the object-side surface S9 of the fifth lens L5 is convex near the optical axis O, and the image-side surface S10 of the fifth lens L5 is convex near the optical axis O; the object-side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image-side surface S12 of the sixth lens L6 is concave near the optical axis O.

[0086] Specifically, the Y-radius in Table 3a 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 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 555.0000 nm.

[0087] In the third embodiment, the object-side surface S3 and image-side surface S4 of the second lens L2 are both aspherical, the object-side surface S7 and image-side surface S8 of the fourth lens L4, the object-side surface S9 and image-side surface S10 of the fifth lens L5, and the object-side surface S11 and image-side surface S12 of the sixth lens L6 are all aspherical. Table 3b gives the conic constant k and higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for the aspherical mirrors in the third embodiment.

[0088] Table 3a Table 3b Please see Figure 6 , Figure 6Figure (A) shows the longitudinal spherical aberration diagrams of the optical lens 100 in the third embodiment at wavelengths of 650.0000 nm, 610.0000 nm, 555.0000 nm, 510.0000 nm, 480.0000 nm, and 435.0000 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.

[0089] 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, a second lens L2, a third lens L3, an aperture stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a filter IR, and a protective glass CG, arranged sequentially along the optical axis O from the object side to the image side. 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 negative refractive power, the fifth lens L5 has positive refractive power, and the sixth lens L6 has negative refractive power.

[0090] The object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is concave near the optical axis O; the object-side surface S3 of the second lens L2 is concave near the optical axis O, and the image-side surface S4 of the second lens L2 is convex near the optical axis O; the object-side surface S5 of the third lens L3 is convex near the optical axis O, and the image-side surface S6 of the third lens L3 is convex near the optical axis O; the object-side surface S7 of the fourth lens L4 is concave near the optical axis O, and the image-side surface S8 of the fourth lens L4 is concave near the optical axis O; the object-side surface S9 of the fifth lens L5 is convex near the optical axis O, and the image-side surface S10 of the fifth lens L5 is convex near the optical axis O; the object-side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image-side surface S12 of the sixth lens L6 is concave near the optical axis O.

[0091] Specifically, the Y-radius in Table 4a 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 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 555.0000 nm.

[0092] In the fourth embodiment, the object-side surface S3 and image-side surface S4 of the second lens L2 are both aspherical, the object-side surface S7 and image-side surface S8 of the fourth lens L4, the object-side surface S9 and image-side surface S10 of the fifth lens L5, and the object-side surface S11 and image-side surface S12 of the sixth lens L6 are all aspherical. Table 4b gives the conic constant k and higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for the aspherical mirrors in the fourth embodiment.

[0093] 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 950.0000 nm, 650.0000 nm, 610.0000 nm, 555.0000 nm, 510.0000 nm, 480.0000 nm, and 435.0000 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 8The 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.

[0094] 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, a second lens L2, a third lens L3, an aperture stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a filter IR, and a protective glass CG, arranged sequentially along the optical axis O from the object side to the image side. 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 negative refractive power, the fifth lens L5 has positive refractive power, and the sixth lens L6 has positive refractive power.

[0095] The object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is concave near the optical axis O; the object-side surface S3 of the second lens L2 is concave near the optical axis O, and the image-side surface S4 of the second lens L2 is convex near the optical axis O; the object-side surface S5 of the third lens L3 is convex near the optical axis O, and the image-side surface S6 of the third lens L3 is convex near the optical axis O; the object-side surface S7 of the fourth lens L4 is concave near the optical axis O, and the image-side surface S8 of the fourth lens L4 is concave near the optical axis O; the object-side surface S9 of the fifth lens L5 is convex near the optical axis O, and the image-side surface S10 of the fifth lens L5 is convex near the optical axis O; the object-side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image-side surface S12 of the sixth lens L6 is concave near the optical axis O.

[0096] Specifically, the Y-radius in Table 5a 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 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 555.0000 nm.

[0097] In the fifth embodiment, the object-side surface S3 and image-side surface S4 of the second lens L2 are both aspherical, the object-side surface S7 and image-side surface S8 of the fourth lens L4, the object-side surface S9 and image-side surface S10 of the fifth lens L5, and the object-side surface S11 and image-side surface S12 of the sixth lens L6 are all aspherical. Table 5b gives the conic constant k and higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for the aspherical mirrors in the fifth embodiment.

[0098] 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 950.0000 nm, 650.0000 nm, 610.0000 nm, 555.0000 nm, 510.0000 nm, 480.0000 nm, and 435.0000 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 10The 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.

[0099] Table 6a shows the FOV, FNO, TTL / F, TTL / ImgH, FOV / F, F2 / F, |F6 / F2|, |F45 / F|, BFL / F, ∑CT / ∑AT, TTL / BFL, TTL / (CT4+CT5, F2 / CT2, R3 / (R4+CT2), |(R5-R6) / (R5+R6)|, R11 / R12, SD2 / SD3, and SD5 / SD4 values ​​for the optical lenses 100 in the first to fifth embodiments. The values ​​of ImgH / SD12, SD1 / SAGS1, SAGS2 / SAGS3, |SAGS11 / SAGS12|, TTL / ImgH / FOV, SD1 / ImgH / FOV, and FOV / FNO are shown in Table 6b. Table 6b shows the values ​​of F1 / F, F3 / F, F4 / F, F5 / F, |F6 / F|, R1 / R2, R3 / R4, R5 / R6, R7 / R8, and R10 / R9 in the optical lenses 100 of the first to fifth embodiments.

[0100] 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).

[0101] 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.

[0102] 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, its object side is convex near the optical axis, and its image side is concave near the optical axis; The second lens has positive refractive power, its object side is concave 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, and its image side is convex near the optical axis. The fourth lens has negative refractive power; its object side is concave near the optical axis, and its image side is also concave near the optical axis. The fifth lens has positive refractive power; its object side is convex near the optical axis, and its image side is convex near the optical axis. The sixth lens has refractive power; its object side is convex near the optical axis, and its image side is concave near the optical axis. The optical lens satisfies the following relationship: 160°≤FOV≤186° 1.8 ≤ FNO ≤ 2.25; Wherein, FOV is the maximum field of view of the optical lens, and FNO is the aperture number of the optical lens.

2. The optical lens as described in claim 1, characterized in that, The optical lens satisfies the following relationship: 5 ≤ TTL / F ≤ 6.9, and / or, 3.7 ≤ TTL / ImgH ≤ 4.6, and / or, 67°≤FOV / F≤87°; 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, F is the effective focal length of the optical lens, and ImgH is half of the image height corresponding to the maximum field of view of the optical lens.

3. The optical lens as described in claim 1, characterized in that, The optical lens satisfies the following relationship: 3.3 ≤ F² / F ≤ 7.3, and / or, 0.5 ≤ |F6 / F2| ≤ 7.2, and / or, 6≤|F45 / F|≤16, and / or, 0.9 ≤ BFL / F ≤ 1.7; Wherein, F2 is the effective focal length of the second lens, F is the effective focal length of the optical lens, F6 is the effective focal length of the sixth lens, F45 is the combined focal length of the fourth and fifth lenses, 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.

4. The optical lens as described in claim 1, characterized in that, The optical lens satisfies the following relationship: 3.2≤∑CT / ∑AT≤4.9, and / or, 4 ≤ TTL / BFL ≤ 5.4, and / or, 4≤TTL / (CT4+CT5)≤4.8, and / or, 3.5≤F2 / CT2≤9.6; Wherein, ∑CT is the sum of the thicknesses of all lenses from the first lens to the sixth lens along the optical axis, ∑AT is the sum of the air gaps between two adjacent lenses from the first lens to the sixth lens along the optical axis, TTL is the distance along the optical axis from the object side of the first lens to the imaging surface of the optical lens, BFL is the distance along the optical axis from the image side of the sixth lens to the imaging surface of the optical lens, CT4 is the thickness of the fourth lens along the optical axis, CT5 is the thickness of the fifth lens along the optical axis, F2 is the effective focal length of the second lens, and CT2 is the thickness of the second lens along the optical axis.

5. The optical lens as described in claim 1, characterized in that, The optical lens satisfies the following relationship: 2.7≤R3 / (R4+CT2)≤6.8, and / or, |(R5-R6) / (R5+R6)|≥ 2.5, and / or, 0 ≤ R11 / R12 ≤ 1.3; Wherein, R3 is the radius of curvature of the object side of the second lens at the optical axis, R4 is the radius of curvature of the image side of the second lens at the optical axis, CT2 is the thickness of the second lens on 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, R11 is the radius of curvature of the object side of the sixth lens at the optical axis, and R12 is the radius of curvature of the image side of the sixth lens at the optical axis.

6. The optical lens as described in claim 1, characterized in that, The optical lens satisfies the following relationship: 1.05 ≤ SD2 / SD3 ≤ 1.15, and / or, 0.8 ≤ SD5 / SD4 ≤ 1.1, and / or, 1.1 ≤ ImgH / SD12 ≤ 1.25; Wherein, SD2 is half of the maximum effective aperture of the image side of the first lens, SD3 is half of the maximum effective aperture of the object side of the second lens, 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, SD12 is half of the maximum effective aperture of the image side of the sixth lens, and ImgH is half of the image height corresponding to the maximum field of view of the optical lens.

7. The optical lens as described in claim 1, characterized in that, The optical lens satisfies the following relationship: 5 ≤ SD1 / SAGS1 ≤ 6.2, and / or, -0.95≤SAGS2 / SAGS3≤-0.4, and / or, |SAGS11 / SAGS12|≤8.5; Wherein, SD1 is half of the maximum effective aperture of the object side of the first lens, SAGS1 is the sagitta of the edge of the effective optical diameter of the object side of the first lens, SAGS2 is the sagitta of the edge of the effective optical diameter of the image side of the first lens, SAGS3 is the sagitta of the edge of the effective optical diameter of the object side of the second lens, SAGS11 is the sagitta of the edge of the effective optical diameter of the object side of the sixth lens, and SAGS12 is the sagitta of the edge of the effective optical diameter of the image side of the sixth lens.

8. The optical lens as described in claim 1, characterized in that, The optical lens satisfies the following relationship: 0.022≤TTL / ImgH / FOV≤0.027, and / or, 0.005≤SD1 / ImgH / FOV≤0.007, and / or, 72°≤FOV / FNO≤98°; 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, and SD1 is half the maximum effective aperture of the object side of the first 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