Optical lens and electronic device

Abstract

The application provides an optical lens and an electronic device. The optical lens comprises: a first lens, the first lens having a negative focal power, a first side of the first lens being a convex surface, and a second side of the first lens being a concave surface; a first side of a second lens being a concave surface, and a second side of the second lens being a convex surface; a third lens having a positive focal power, a first side of the third lens being a concave surface, and a second side of the third lens being a convex surface; a fourth lens, the fourth lens having a positive focal power, at least one of a first side and a second side of the fourth lens being a convex surface; a fifth lens; at least one of a first side and a second side of a sixth lens being a convex surface; a seventh lens having a positive focal power, a first side of the seventh lens being a convex surface, and a second side of the seventh lens being a convex surface. The application solves the problem that the optical lens in the prior art cannot simultaneously consider high resolution, miniaturization, a large aperture, weak ghost images, a small front aperture, a large field of view, long focus, and a large central angle resolution.

Description

Technical Field

[0001] This invention relates to the field of optical imaging equipment technology, and more specifically, to an optical lens and an electronic device. Background Technology

[0002] With the rise of forward-looking cameras, driver assistance systems, and the autonomous driving market, optical lenses are increasingly being used in automotive driver assistance systems. These lenses need to keep pace with the development of chips, thus placing high resolution demands on them. While existing optical lenses can achieve megapixel resolution, aberrations such as chromatic aberration and astigmatism remain significant problems.

[0003] For aesthetic reasons and ease of installation, current vehicle manufacturers mostly use concealed mounting methods for optical lenses, thus placing higher demands on the small aperture and miniaturization of these lenses. Balancing miniaturization with a large field of view and telephoto lens, and improving center angular resolution, are also current challenges in optical lens design. The light transmission capacity of some existing optical lenses is insufficient for user needs, making them unsuitable for low-light shooting environments such as at night or in rainy weather; therefore, a large aperture is required for these lenses. As the application of optical lenses in intelligent assisted driving and autonomous driving fields gradually increases, ghosting can cause autonomous driving assistance systems to misjudge real-world road conditions, potentially endangering the lives of occupants; therefore, a requirement for optical lenses with low ghosting is also being placed.

[0004] In conclusion, considering the mounting position and functional implementation of optical lenses, there is a great need for an optical lens design that can comprehensively meet the requirements of high light transmission, high resolution, low ghosting, and miniaturization.

[0005] In other words, existing optical lenses suffer from the problem of not being able to simultaneously achieve high resolution, miniaturization, large aperture, weak ghosting, small front aperture, large field of view, telephoto, and high center angle resolution. Summary of the Invention

[0006] The main objective of this invention is to provide an optical lens and an electronic device to solve the problem that existing optical lenses cannot simultaneously achieve high resolution, miniaturization, large aperture, weak ghosting, small front aperture, large field of view, long focal length, and large center angle resolution.

[0007] To achieve the above objectives, according to one aspect of the present invention, an optical lens is provided, comprising, from a first side to a second side: a first lens having negative optical power, a first side surface of the first lens being convex, and a second side surface of the first lens being concave; a second lens having optical power, a first side surface of the second lens being concave, and a second side surface of the second lens being convex; a third lens having positive optical power, a first side surface of the third lens being concave, and a second side surface of the third lens being convex; a fourth lens having positive optical power, at least one of the first side surface and the second side surface of the fourth lens being convex; a fifth lens having optical power; a sixth lens having optical power, at least one of the first side surface and the second side surface of the sixth lens being convex; and a seventh lens having positive optical power, a first side surface of the seventh lens being convex, and a second side surface of the seventh lens being convex.

[0008] Furthermore, the optical power of the second lens is positive.

[0009] Furthermore, the optical power of the second lens is negative.

[0010] Furthermore, the first side surface of the fourth lens is convex, and the second side surface of the fourth lens is also convex.

[0011] Furthermore, the first side surface of the fourth lens is convex, and the second side surface of the fourth lens is concave.

[0012] Furthermore, the fifth lens has negative optical power, the first side of the fifth lens is convex, and the second side of the fifth lens is concave.

[0013] Furthermore, the fifth lens has negative optical power, and the first side surface of the fifth lens is concave, as is the second side surface of the fifth lens.

[0014] Furthermore, the fifth lens has positive optical power, and the first side surface of the fifth lens is convex, as is the second side surface of the fifth lens.

[0015] Furthermore, the sixth lens has positive optical power, and the first side surface of the sixth lens is convex, and the second side surface of the sixth lens is convex.

[0016] Furthermore, the sixth lens has positive optical power, the first side of the sixth lens is convex, and the second side of the sixth lens is concave.

[0017] Furthermore, the sixth lens has negative optical power, the first side of the sixth lens is concave, and the second side of the sixth lens is convex.

[0018] Furthermore, the optical lens also includes an aperture stop, which is positioned between the second lens and the third lens.

[0019] Furthermore, the fifth lens and the sixth lens are cemented together to form a cemented lens.

[0020] Furthermore, at least two of the first, third, fourth, and seventh lenses are aspherical lenses.

[0021] Furthermore, the first side surface of the seventh lens is a curved surface.

[0022] Furthermore, the total focal length F of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: 0.1≤F / H≤1.8.

[0023] Furthermore, the focal length F1 of the first lens and the combined focal length F12 of the first and second lenses satisfy the following condition: 0.05≤|F1 / F12|≤2.

[0024] Furthermore, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view FOV of the optical lens satisfy the following relationship: D / H / FOV≤0.1.

[0025] Furthermore, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the following relationship: D / H / θ≤2.

[0026] Furthermore, the combined focal length F12 of the first lens and the second lens satisfies the following relationship with the total focal length F of the optical lens: -10≤F12 / F≤-3.

[0027] Furthermore, the central radius of curvature R3 of the first side surface of the second lens, the central radius of curvature R4 of the second side surface of the second lens, and the central thickness d3 of the second lens satisfy the following condition: 0.5≤R3 / (R4+d3)≤5.

[0028] Furthermore, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the maximum field of view FOV of the optical lens satisfy the following condition: D / F / FOV≤0.5.

[0029] Furthermore, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the following relationship: D / F / θ≤2.

[0030] Furthermore, the total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens of the optical lens to the center of the imaging plane of the optical lens, satisfies the following condition with respect to the maximum field of view (FOV) of the optical lens: 0.46≤2*TTL / FOV≤1.5.

[0031] Furthermore, the central radius of curvature R14 of the second side of the seventh lens and the central thickness d13 of the seventh lens satisfy the following condition: R14 / d13≤-5.

[0032] Furthermore, the focal length F4 of the fourth lens satisfies the following condition with respect to the total focal length F of the optical lens: 0.1 ≤ F4 / F.

[0033] Furthermore, the combined focal length F34 of the third and fourth lenses satisfies the following relationship with the total focal length F of the optical lens: 0.1≤F34 / F≤3.

[0034] Furthermore, the focal length F3 of the third lens satisfies the following condition with respect to the total focal length F of the optical lens: 0.5 ≤ F3 / F.

[0035] Furthermore, the maximum field of view (FOV) of the optical lens, the total focal length (F) of the optical lens, and the image height (H) corresponding to the maximum field of view of the optical lens satisfy the following relationship: 85 ≤ (FOV × F) / H.

[0036] Furthermore, the image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the following relationship: (H / 2) / (F*tan(θ / 2))≤1.2.

[0037] Furthermore, the image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the maximum field of view FOV of the optical lens satisfy the following relationship: |(F*FOV) / (HF*FOV)|≤2.

[0038] Furthermore, the image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the following relationship: |(F*θ) / (HF*θ)|≤5.

[0039] Furthermore, the central radius of curvature R1 of the first side of the first lens satisfies the following relationship with the total focal length F of the optical lens: 0.1≤R1 / F≤3.

[0040] Furthermore, the central radius of curvature R1 of the first side surface of the first lens and the focal length F1 of the first lens satisfy the following condition: -0.39≤R1 / F1≤-0.05.

[0041] Furthermore, the effective aperture DST of the optical lens and the total focal length F of the optical lens satisfy the following condition: 0.3≤DST / F.

[0042] Furthermore, the total focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy the following relationship: F / ENPD≤2.

[0043] Furthermore, the center thickness d10 of the fifth lens, the center thickness d11 of the sixth lens, the air gap d12 between the sixth and seventh lenses, the center thickness d13 of the seventh lens, and the total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens of the optical lens to the center of the imaging plane of the optical lens, satisfy the following: 0.05≤(d10+d11+d12+d13) / TTL≤0.7.

[0044] Furthermore, the radius of curvature R6 of the first side surface of the third lens and the radius of curvature R7 of the second side surface of the third lens satisfy the following condition: 0.5≤R6 / R7≤10.

[0045] According to another aspect of the present invention, an optical lens is provided, comprising, from a first side to a second side, the following components in sequence: a first lens having negative optical power; a second lens having optical power; a third lens having positive optical power; a fourth lens having positive optical power; a fifth lens having optical power; a sixth lens having optical power; and a seventh lens having positive optical power; wherein the central radius of curvature R1 of the first side of the first lens satisfies the following condition with respect to the total focal length F of the optical lens: 0.1 ≤ R1 / F ≤ 3.

[0046] Furthermore, the first side surface of the first lens is convex, and the second side surface of the first lens is concave.

[0047] Furthermore, the optical power of the second lens is positive or negative, the first side surface of the second lens is concave, and the second side surface of the second lens is convex.

[0048] Furthermore, the first side surface of the third lens is concave, and the second side surface of the third lens is convex.

[0049] Furthermore, the first side surface of the fourth lens is convex, and the second side surface of the fourth lens is also convex.

[0050] Furthermore, the first side surface of the fourth lens is convex, and the second side surface of the fourth lens is concave.

[0051] Furthermore, the fifth lens has negative optical power, the first side of the fifth lens is convex, and the second side of the fifth lens is concave.

[0052] Furthermore, the fifth lens has negative optical power, and the first side surface of the fifth lens is concave, as is the second side surface of the fifth lens.

[0053] Furthermore, the fifth lens has positive optical power, and the first side surface of the fifth lens is convex, as is the second side surface of the fifth lens.

[0054] Furthermore, the sixth lens has positive optical power, and the first side surface of the sixth lens is convex, and the second side surface of the sixth lens is convex.

[0055] Furthermore, the sixth lens has positive optical power, the first side of the sixth lens is convex, and the second side of the sixth lens is concave.

[0056] Furthermore, the sixth lens has negative optical power, the first side of the sixth lens is concave, and the second side of the sixth lens is convex.

[0057] Furthermore, the first side surface of the seventh lens is convex, and the second side surface of the seventh lens is also convex.

[0058] Furthermore, the optical lens also includes an aperture stop, which is positioned between the second lens and the third lens.

[0059] Furthermore, the fifth lens and the sixth lens are cemented together to form a cemented lens.

[0060] Furthermore, at least two of the first, third, fourth, and seventh lenses are aspherical lenses.

[0061] Furthermore, the first side surface of the seventh lens is a curved surface.

[0062] Furthermore, the total focal length F of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: 0.1≤F / H≤1.8.

[0063] Furthermore, the focal length F1 of the first lens and the combined focal length F12 of the first and second lenses satisfy the following condition: 0.05≤|F1 / F12|≤2.

[0064] Furthermore, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view FOV of the optical lens satisfy the following relationship: D / H / FOV≤0.1.

[0065] Furthermore, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the following relationship: D / H / θ≤2.

[0066] Furthermore, the combined focal length F12 of the first lens and the second lens satisfies the following relationship with the total focal length F of the optical lens: -10≤F12 / F≤-3.

[0067] Furthermore, the central radius of curvature R3 of the first side surface of the second lens, the central radius of curvature R4 of the second side surface of the second lens, and the central thickness d3 of the second lens satisfy the following condition: 0.5≤R3 / (R4+d3)≤5.

[0068] Furthermore, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the maximum field of view FOV of the optical lens satisfy the following condition: D / F / FOV≤0.5.

[0069] Furthermore, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the following relationship: D / F / θ≤2.

[0070] Furthermore, the total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens of the optical lens to the center of the imaging plane of the optical lens, satisfies the following condition with respect to the maximum field of view (FOV) of the optical lens: 0.46≤2*TTL / FOV≤1.5.

[0071] Furthermore, the central radius of curvature R14 of the second side of the seventh lens and the central thickness d13 of the seventh lens satisfy the following condition: R14 / d13≤-5.

[0072] Furthermore, the focal length F4 of the fourth lens satisfies the following condition with respect to the total focal length F of the optical lens: 0.1 ≤ F4 / F.

[0073] Furthermore, the combined focal length F34 of the third and fourth lenses satisfies the following relationship with the total focal length F of the optical lens: 0.1≤F34 / F≤3.

[0074] Furthermore, the focal length F3 of the third lens satisfies the following condition with respect to the total focal length F of the optical lens: 0.5 ≤ F3 / F.

[0075] Furthermore, the maximum field of view (FOV) of the optical lens, the total focal length (F) of the optical lens, and the image height (H) corresponding to the maximum field of view of the optical lens satisfy the following relationship: 85 ≤ (FOV × F) / H.

[0076] Furthermore, the image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the following relationship: (H / 2) / (F*tan(θ / 2))≤1.2.

[0077] Furthermore, the image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the maximum field of view FOV of the optical lens satisfy the following relationship: |(F*FOV) / (HF*FOV)|≤2.

[0078] Furthermore, the image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the following relationship: |(F*θ) / (HF*θ)|≤5.

[0079] Furthermore, the central radius of curvature R1 of the first side surface of the first lens and the focal length F1 of the first lens satisfy the following condition: -0.39≤R1 / F1≤-0.05.

[0080] Furthermore, the effective aperture DST of the optical lens and the total focal length F of the optical lens satisfy the following condition: 0.3≤DST / F.

[0081] Furthermore, the total focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy the following relationship: F / ENPD≤2.

[0082] Furthermore, the center thickness d10 of the fifth lens, the center thickness d11 of the sixth lens, the air gap d12 between the sixth and seventh lenses, the center thickness d13 of the seventh lens, and the total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens of the optical lens to the center of the imaging plane of the optical lens, satisfy the following: 0.05≤(d10+d11+d12+d13) / TTL≤0.7.

[0083] Furthermore, the radius of curvature R6 of the first side surface of the third lens and the radius of curvature R7 of the second side surface of the third lens satisfy the following condition: 0.5≤R6 / R7≤10.

[0084] According to another aspect of the present invention, an electronic device is provided, including the aforementioned optical lens and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

[0085] According to the technical solution of this invention, the optical lens includes, from the first side to the second side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The first lens has negative optical power, a first side surface of the first lens is convex, and a second side surface of the first lens is concave. The second lens has optical power, a first side surface of the second lens is concave, and a second side surface of the second lens is convex. The third lens has positive optical power, a first side surface of the third lens is concave, and a second side surface of the third lens is convex. The fourth lens has positive optical power, and at least one of the first side surface and the second side surface of the fourth lens is convex. The fifth lens has optical power. The sixth lens has optical power, and at least one of the first side surface and the second side surface of the sixth lens is convex. The seventh lens has positive optical power, a first side surface of the seventh lens is convex, and a second side surface of the seventh lens is convex.

[0086] The first lens has negative optical power, which diverges light rays passing through it, ensuring that the light rays exiting the first lens maintain an upward trajectory. Under the same field of view, the light rays exiting through the second side of the first lens provide a larger light-receiving surface for the subsequent optical system. The first side of the first lens is convex, and the second side is concave. This allows the light rays to have a smaller incident angle on the first side of the first lens, enabling them to reach the subsequent optical system smoothly and facilitating a large field of view. The convex design of the first side of the first lens also facilitates the sliding of water droplets in practical environments such as rain and snow, reducing the interference of water droplets on image quality. The first lens is preferably made of a material with a high refractive index, which allows for a smaller front aperture. An aspherical lens can also be chosen to further improve resolution. The first side of the first lens has a large R-value at the center and a relatively smooth edge with a small R-value, thus achieving the requirement of large angular resolution at the center.

[0087] The second lens has optical power; when the second lens has positive optical power, it has a relatively small positive optical power, resulting in less improvement in the light trajectory. The light rays exiting the second lens still maintain an upward trajectory. Under the same field of view, the light rays exiting through the second side of the second lens can provide a larger light-receiving surface for the subsequent optical system. This is beneficial for both expanding the imaging plane and increasing the physical aperture of the stop, resulting in a larger aperture, greater light intake, and increased image brightness. The first side of the second lens is concave, and the second side is convex. Designing the second lens in a meniscus shape helps it collect the light rays entering through the first lens. Because the curvatures of the first and second sides of the second lens are similar, it facilitates a smooth transition of light rays on the second lens, reducing sensitivity. At the same time, the concave first side of the second lens, combined with the concave second side of the first lens, allows for a reduction in the front aperture of the optical lens, thus reducing its size. This design facilitates miniaturization and cost reduction. When the second lens has negative optical power, it diverges light. Under the same field of view, the light emitted from the second side of the second lens can provide a larger light receiving surface for the subsequent optical system. This is beneficial for expanding the imaging surface and increasing the physical aperture of the stop, resulting in a larger light intake and increased image brightness. The first side of the second lens is concave, and the second side is convex. Designing the second lens in a meniscus shape helps collect light entering through the first lens. Because the curvatures of the first and second sides of the second lens are similar, it facilitates a smooth transition of light on the second lens and reduces sensitivity. By rationally planning the surface shapes of the two surfaces of the second lens, making them nearly concentric circles, there is an optical path difference between the peripheral and central rays, which diverges the central rays and allows them to enter the subsequent optical system. This also reduces the front aperture of the optical lens and decreases its size, which is beneficial for miniaturization and cost reduction.

[0088] The third lens has positive optical power, which is beneficial for converging light. On the one hand, it allows diverging light to smoothly enter the rear optical system, and on the other hand, it lowers the position of the light entering the subsequent optical system, which helps to reduce the rear port diameter and facilitates miniaturization. The first side of the third lens is concave, and the second side is convex. This allows the shape of the first side of the third lens to match that of the second side of the second lens, which makes the light path between the second and third lenses smoother, thereby reducing sensitivity, reducing aberrations, and improving resolving power. At the same time, it ensures that the light emitted from the second lens can be well received by the third lens, reducing the loss of light in each field of view and improving the relative illumination in each field of view.

[0089] The fourth lens has positive optical power. When both the first and second sides of the fourth lens are convex, its positive optical power further converges light, allowing the light to smoothly transition to the rear lens after passing through the third and fourth lenses. Simultaneously, the converging effect of the fourth lens further reduces the rear aperture. Furthermore, the significant difference in shape between the second side of the third lens and the first side of the fourth lens noticeably alters the light trajectory. With the same fourth lens aperture, this allows for a reduction in the front aperture and overall miniaturization of the optical lens. The first side of the fourth lens is convex with a large curvature, ensuring a smooth transition of light from the third lens to the rear lens, further improving resolution and contributing to a smaller overall lens size. When the first side of the fourth lens is convex and the second side is concave, it converges light, reducing divergence and allowing light to enter the rear lens more smoothly, improving image quality. The converging effect of the fourth lens further reduces the rear aperture, contributing to lens miniaturization.

[0090] The fifth lens has optical power. When the fifth lens has negative optical power, it diverges light rays. By controlling the focal length of the fifth lens, various aberrations caused by the front positive lens can be effectively corrected, thereby improving image quality. When the fifth lens has positive optical power, it further converges light rays, allowing the light to smoothly transition to the rear lens after passing through the fifth lens. At the same time, the converging effect of the fifth lens can further reduce the rear aperture.

[0091] The sixth lens has optical power, and at least one of its first and second side surfaces is convex. When the sixth lens has positive optical power and both its first and second side surfaces are convex, the convexity of its first side surface allows the light rays entering from the fifth lens to converge further and enter the rear lens more smoothly, thereby improving resolution. A positive optical power sixth lens can be used in conjunction with a negative optical power fifth lens to improve astigmatism and field curvature, thus enhancing the resolution of the optical system. When the sixth lens has positive optical power, and its first side surface is convex while its second side surface is concave, the positive optical power causes the light rays to converge after passing through the sixth lens, reducing the upward tendency of the light rays and preventing energy loss caused by excessive angles between large field-of-view rays and the chip's principal ray when reaching the imaging surface. This also helps improve the illumination at the edge of the field of view. When the sixth lens has negative optical power, and the first side is concave and the second side is convex, the negative optical power of the sixth lens is beneficial for collecting the light entering through the fifth lens, making the light path transition smoothly and improving the resolving power; the concave first side helps the light to present an upward trend, thereby expanding the imaging range and ensuring the characteristics of a large image plane.

[0092] The seventh lens has positive optical power and a relatively large focal length, causing minimal alteration to the light trajectory. It allows light rays that have passed through the fifth and sixth lenses to smoothly transition to the imaging plane, improving astigmatism and field curvature, and enhancing the resolving power of the optical system. Both the first and second sides of the seventh lens are convex, causing light rays to converge downwards after passing through the second side, with a larger radius. This helps to shorten physical distances, reducing the overall length of the optical system and facilitating miniaturization. The seventh lens is preferably an aspherical lens, which effectively corrects astigmatism and field curvature, further improving the resolving power of the optical system.

[0093] In addition, the optical lens of this application uses seven lenses. By optimizing the optical power and surface shape of each lens, the optical lens of this application has at least one beneficial effect such as high resolution, miniaturization, large aperture, weak ghosting, small front aperture, large field of view, long focal length, and large center angle resolution. Attached Figure Description

[0094] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0095] Figure 1 A schematic diagram of the structure of an optical lens of Example 1 of the present invention is shown;

[0096] Figure 2 A schematic diagram of the structure of the optical lens of Example 2 of the present invention is shown;

[0097] Figure 3 A schematic diagram of the structure of the optical lens of Example 3 of the present invention is shown;

[0098] Figure 4 A schematic diagram of the structure of the optical lens of Example 4 of the present invention is shown;

[0099] Figure 5 A schematic diagram of the structure of the optical lens of Example 5 of the present invention is shown;

[0100] Figure 6 A schematic diagram of the structure of the optical lens of Example Six of the present invention is shown;

[0101] Figure 7 A schematic diagram of the structure of the optical lens of Example Seven of the present invention is shown;

[0102] Figure 8 A schematic diagram of the structure of the optical lens of Example 8 of the present invention is shown;

[0103] Figure 9 A schematic diagram of the structure of the optical lens of Example 9 of the present invention is shown;

[0104] Figure 10 A schematic diagram of the structure of the optical lens of Example 10 of the present invention is shown.

[0105] The above figures include the following reference numerals:

[0106] L1, First lens; S1, First side surface of the first lens; S2, Second side surface of the first lens; L2, Second lens; S3, First side surface of the second lens; S4, Second side surface of the second lens; STO, Aperture stop; L3, Third lens; S6, First side surface of the third lens; S7, Second side surface of the third lens; L4, Fourth lens; S8, First side surface of the fourth lens; S9, Second side surface of the fourth lens; L5, Fifth lens; S10, First side surface of the fifth lens; S11, Second side surface of the fifth lens; L6, Sixth lens; S11, First side surface of the sixth lens; S12, Second side surface of the sixth lens; L7, Seventh lens; S13, First side surface of the seventh lens; S14, Second side surface of the seventh lens; L8, Filter; S15, First side surface of the filter; S16, Second side surface of the filter; S17, First side surface of the protective glass; S18, Second side surface of the protective glass; IMA, Imaging plane. Detailed Implementation

[0107] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0108] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0109] In this invention, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0110] It should be noted that in this specification, the terms "first," "second," "third," etc., are used only to distinguish one feature from another and do not imply any limitation on the features. Therefore, without departing from the teachings of this application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0111] In the accompanying drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are illustrated by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustrative purposes only and are not drawn strictly to scale.

[0112] In this paper, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the location of the convexity is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the location of the concaveness is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the first side is called the first side surface of the lens, and the surface of each lens closest to the second side is called the second side surface of the lens. The surface shape in the paraxial region can be determined according to the judgment method commonly known in the field, using the R value (R refers to the radius of curvature of the paraxial region, usually the R value in the lens database of optical software) to determine concavity or convexity. For the first side surface, when the R value is positive, it is determined to be convex, and when the R value is negative, it is determined to be concave; for the second side surface, when the R value is positive, it is determined to be concave, and when the R value is negative, it is determined to be convex.

[0113] In an exemplary embodiment, the optical lens provided in this application can be used, for example, as an automotive lens. In this case, the left side is the image side, and the right side is the object side. The first side is the image side, and the second side is the object side. The first side of the optical lens is the image plane of the automotive lens, and the second side of the optical lens is the object plane of the automotive lens.

[0114] In an exemplary embodiment, the optical lens provided in this application can be used as, for example, a projection lens or a lidar transmitter lens.

[0115] To address the challenges of simultaneously achieving high resolution, miniaturization, large aperture, weak ghosting, small front aperture, wide field of view, telephoto lens, and high center angle resolution in existing optical lenses, this invention provides an optical lens and an electronic device.

[0116] Example 1

[0117] like Figures 1 to 10As shown, the optical lens includes, from the first side to the second side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The first lens has negative optical power, its first side surface is convex, and its second side surface is concave. The second lens has optical power, its first side surface is concave, and its second side surface is convex. The third lens has positive optical power, its first side surface is concave, and its second side surface is convex. The fourth lens has positive optical power, and at least one of its first and second side surfaces is convex. The fifth lens has optical power. The sixth lens has optical power, and at least one of its first and second side surfaces is convex. The seventh lens has positive optical power, its first side surface is convex, and its second side surface is convex.

[0118] The first lens has negative optical power, which allows it to diverge light rays, ensuring that the light rays exiting the first lens maintain an upward trajectory. Under the same field of view, the light rays exiting from the second side of the first lens provide a larger light-receiving surface for the subsequent optical system. The first side of the first lens is convex, and the second side is concave. This allows the light rays to have a smaller incident angle on the first side of the first lens, enabling them to reach the subsequent optical system smoothly and facilitating a large field of view. Designing the first side of the first lens as convex also facilitates the sliding of water droplets in practical environments such as rain and snow, reducing the interference of water droplets on image quality. The first lens is preferably made of a material with a high refractive index, which allows for a smaller front aperture. An aspherical lens can also be chosen to further improve resolution. The first side of the first lens has a large R-value at the center and a relatively smooth edge with a small R-value, thus achieving the requirement of large angular resolution at the center.

[0119] The second lens has optical power; when the second lens has positive optical power, it has a relatively small positive optical power, resulting in less improvement in the light trajectory. The light rays exiting the second lens still maintain an upward trajectory. Under the same field of view, the light rays exiting through the second side of the second lens can provide a larger light-receiving surface for the subsequent optical system. This is beneficial for both expanding the imaging plane and increasing the physical aperture of the stop, resulting in a larger aperture, greater light intake, and increased image brightness. The first side of the second lens is concave, and the second side is convex. Designing the second lens in a meniscus shape helps it collect the light rays entering through the first lens. Because the curvatures of the first and second sides of the second lens are similar, it facilitates a smooth transition of light rays on the second lens, reducing sensitivity. At the same time, the concave first side of the second lens, combined with the concave second side of the first lens, allows for a reduction in the front aperture of the optical lens, thus reducing its size. This design facilitates miniaturization and cost reduction. When the second lens has negative optical power, it diverges light. Under the same field of view, the light emitted from the second side of the second lens can provide a larger light receiving surface for the subsequent optical system. This is beneficial for expanding the imaging surface and increasing the physical aperture of the stop, resulting in a larger light intake and increased image brightness. The first side of the second lens is concave, and the second side is convex. Designing the second lens in a meniscus shape helps collect light entering through the first lens. Because the curvatures of the first and second sides of the second lens are similar, it facilitates a smooth transition of light on the second lens and reduces sensitivity. By rationally planning the surface shapes of the two surfaces of the second lens, making them nearly concentric circles, there is an optical path difference between the peripheral and central rays, which diverges the central rays and allows them to enter the subsequent optical system. This also reduces the front aperture of the optical lens and decreases its size, which is beneficial for miniaturization and cost reduction.

[0120] The third lens has positive optical power, which is beneficial for converging light. On the one hand, it allows diverging light to smoothly enter the rear optical system, and on the other hand, it lowers the position of the light entering the subsequent optical system, which helps to reduce the rear port diameter and facilitates miniaturization. The first side of the third lens is concave, and the second side is convex. This allows the shape of the first side of the third lens to match that of the second side of the second lens, which makes the light path between the second and third lenses smoother, thereby reducing sensitivity, reducing aberrations, and improving resolving power. At the same time, it ensures that the light emitted from the second lens can be well received by the third lens, reducing the loss of light in each field of view and improving the relative illumination in each field of view.

[0121] The fourth lens has positive optical power. When both the first and second sides of the fourth lens are convex, its positive optical power further converges light, allowing the light to smoothly transition to the rear lens after passing through the third and fourth lenses. Simultaneously, the converging effect of the fourth lens further reduces the rear aperture. Furthermore, the significant difference in shape between the second side of the third lens and the first side of the fourth lens noticeably alters the light trajectory. With the same fourth lens aperture, this allows for a reduction in the front aperture and overall miniaturization of the optical lens. The first side of the fourth lens is convex with a large curvature, ensuring a smooth transition of light from the third lens to the rear lens, further improving resolution and contributing to a smaller overall lens size. When the first side of the fourth lens is convex and the second side is concave, it converges light, reducing divergence and allowing light to enter the rear lens more smoothly, improving image quality. The converging effect of the fourth lens further reduces the rear aperture, contributing to lens miniaturization.

[0122] The fifth lens has optical power. When the fifth lens has negative optical power, it diverges light rays. By controlling the focal length of the fifth lens, various aberrations caused by the front positive lens can be effectively corrected, thereby improving image quality. When the fifth lens has positive optical power, it further converges light rays, allowing the light to smoothly transition to the rear lens after passing through the fifth lens. At the same time, the converging effect of the fifth lens can further reduce the rear aperture.

[0123] The sixth lens has optical power, and at least one of its first and second side surfaces is convex. When the sixth lens has positive optical power and both its first and second side surfaces are convex, the convexity of its first side surface allows the light rays entering from the fifth lens to converge further and enter the rear lens more smoothly, thereby improving resolution. A positive optical power sixth lens can be used in conjunction with a negative optical power fifth lens to improve astigmatism and field curvature, enhancing the resolution of the optical system. Using a focal length ratio similar to that of the fifth lens ensures stable imaging even at high and low temperatures. When the sixth lens has positive optical power, and its first side surface is convex while its second side surface is concave, the positive optical power causes light rays to converge after passing through the sixth lens, reducing the upward tendency of the light rays and preventing energy loss caused by excessive angles between large field-of-view rays and the chip's principal ray when reaching the imaging surface. This also helps improve illumination at the edge of the field of view. When the sixth lens has negative optical power, and the first side is concave and the second side is convex, the negative optical power of the sixth lens is beneficial for collecting the light entering through the fifth lens, making the light path transition smoothly and improving the resolving power; the concave first side helps the light to present an upward trend, thereby expanding the imaging range and ensuring the characteristics of a large image plane.

[0124] The seventh lens has positive optical power and a relatively large focal length, causing minimal alteration to the light trajectory. It allows light rays that have passed through the fifth and sixth lenses to smoothly transition to the imaging plane, improving astigmatism and field curvature, and enhancing the resolving power of the optical system. Both the first and second sides of the seventh lens are convex, causing light rays to converge downwards after passing through the second side, with a larger radius. This helps to shorten physical distances, reducing the overall length of the optical system and facilitating miniaturization. The seventh lens is preferably an aspherical lens, which effectively corrects astigmatism and field curvature, further improving the resolving power of the optical system.

[0125] In addition, the optical lens of this application uses seven lenses. By optimizing the optical power and surface shape of each lens, the optical lens of this application has at least one beneficial effect such as high resolution, miniaturization, large aperture, weak ghosting, small front aperture, large field of view, long focal length, and large center angle resolution.

[0126] In this embodiment, the first side surface of the fourth lens is convex, and the second side surface of the fourth lens is also convex. The fourth lens has positive optical power, which further converges the light rays, allowing them to smoothly transition to the rear lens after passing through the third and fourth lenses. Simultaneously, the converging effect of the fourth lens further reduces the rear aperture. Furthermore, the significant difference in shape between the second side surface of the third lens and the first side surface of the fourth lens results in a noticeable change in the light trajectory of the fourth lens. With the same fourth lens aperture, this achieves a reduction in the front aperture of the optical lens and overall miniaturization. The convex shape and large curvature of the first side surface of the fourth lens ensure a smooth transition of light rays after passing through the third lens to the rear lens, further improving resolution and contributing to a reduction in the overall size of the optical lens.

[0127] In this embodiment, the first side surface of the fourth lens is convex, and the second side surface is concave. This can converge light rays, reduce light divergence, and facilitate the smooth entry of light into the rear lens, thereby improving image quality. At the same time, the light-converging effect of the fourth lens can further reduce the rear aperture, which is beneficial for the miniaturization of optical lenses.

[0128] In this embodiment, the first side of the fifth lens is convex, and the second side is concave. At this time, the fifth lens has negative optical power and a gently sloping shape, allowing diverging light rays to converge smoothly and enter the rear, further smoothing the light path and reducing lens sensitivity. At least two positive optical power lenses are connected to the front of the fifth lens, which, while altering the light path, also introduce significant aberrations. The fifth lens, being negative optical power, has a diverging effect on light. By controlling the focal length of the fifth lens, various aberrations introduced by the front positive lenses can be effectively corrected, improving image quality.

[0129] In this embodiment, the first side surface of the fifth lens is concave, and the second side surface of the fifth lens is also concave. At this time, the fifth lens has negative optical power; it is a biconcave negative optical power lens. The concave first side surface causes a significant light reversal upon light entering the lens, clearly distinguishing the edge rays from the center rays in each field of view. This alters the trend of the edge rays, facilitating aberration correction between the center and edge rays in each field of view, and promoting high resolution. Simultaneously, it allows the light emitted from the fifth lens to diverge, resulting in smoother light emission and improved resolution. Furthermore, the fifth lens is preferably made of a high refractive index material, making it easier to pair with high dispersion coefficient lenses to correct chromatic aberration.

[0130] In this embodiment, both the first and second sides of the fifth lens are convex. The fifth lens then possesses positive optical power. The convexity of the first side of the fifth lens facilitates a reduction in the height of light entering the sixth lens, thereby decreasing the rear aperture and achieving miniaturization.

[0131] In this embodiment, the first side surface of the sixth lens is convex, and the second side surface of the sixth lens is also convex. At this time, the sixth lens has positive optical power. The convexity of the first side surface of the sixth lens allows the light rays entering from the fifth lens to be further converged and smoothly enter the rear lens, thereby improving resolving power. The positive optical power of the sixth lens allows it to work in conjunction with the negative optical power of the fifth lens, improving astigmatism and field curvature in imaging, and enhancing the resolving power of the optical system.

[0132] In this embodiment, the first side surface of the sixth lens is convex, and the second side surface of the sixth lens is concave. At this time, the fifth lens has positive optical power. The positive optical power causes the light rays to converge after passing through the sixth lens, reducing the upward trend of the light rays. This avoids light energy loss caused by an excessively large angle between the large field-of-view light rays and the chip's main ray when they reach the imaging surface, thus improving the illumination of the edge field of view.

[0133] In this embodiment, the first side surface of the sixth lens is concave, and the second side surface of the sixth lens is convex. At this time, the sixth lens has negative optical power, which is beneficial for collecting light rays entering through the fifth lens, ensuring a smooth transition of light path and improving resolution. The concave first side surface helps to make the light rays trend upwards, thereby expanding the imaging range and ensuring the large image area characteristic.

[0134] In this embodiment, the optical lens also includes an aperture stop, which is disposed between the second lens and the third lens. The aperture stop's location between the second and third lenses facilitates an increase in aperture diameter; it effectively concentrates the light entering the optical system, reduces the aperture of each lens in the optical system, and lowers the system's assembly sensitivity.

[0135] In this embodiment, the fifth and sixth lenses are cemented together to form a cemented lens. Cementing the fifth and sixth lenses reduces the air gap between them, making the overall optical system more compact. Cementing also shortens the physical length of the optical system, facilitating miniaturization. Furthermore, cementing eliminates significant light refraction between the fifth and sixth lenses, effectively transitioning forward light and reducing lens sensitivity. Using materials with different Abbe numbers in combination facilitates overall aberration correction and improves image quality. When the fifth lens has positive optical power, it helps converge light; when it has negative optical power, it prevents excessive divergence of light from the first side, ensuring a smooth transition to the rear lenses. This arrangement also reduces the number of assembly components between the fifth and sixth lenses, simplifying the assembly process and lowering costs. It also reduces tolerance sensitivity issues caused by tilting or eccentricity during lens assembly, minimizes light loss due to reflections between the two lenses, improving illumination, and helps eliminate chromatic aberration, while retaining some residual chromatic aberration to balance the system's overall color accuracy. Under the premise of compact structure, it is conducive to improving optical performance such as resolution, distortion optimization, and CRA. It can reduce ghosting to a certain extent, share the overall chromatic aberration correction of the system, effectively correct aberrations, and improve resolution.

[0136] In this embodiment, at least two of the first, third, fourth, and seventh lenses are aspherical lenses. Preferably, all of the first, third, fourth, and seventh lenses are aspherical lenses. Using two or more aspherical lenses helps to improve field curvature and astigmatism, thereby enhancing the resolving power of the optical lens.

[0137] In this embodiment, the first side surface of the seventh lens is an inverted curved surface. By setting an inverted curved surface on the seventh lens, it is beneficial to correct astigmatism and field curvature.

[0138] In this embodiment, the ratio of the total focal length F of the optical lens to the image height H corresponding to the maximum field of view of the optical lens satisfies the condition: 0.1 ≤ F / H ≤ 1.8. By constraining the ratio of the total focal length F of the optical lens to the image height H corresponding to the maximum field of view of the optical lens within a certain range, it is beneficial to improve resolving power. Preferably, 0.5 ≤ F / H ≤ 1.2.

[0139] In this embodiment, the focal length F1 of the first lens and the combined focal length F12 of the first and second lenses satisfy the condition: 0.05 ≤ |F1 / F12| ≤ 2. Satisfying this condition facilitates a reasonable allocation of the focal lengths of the first and second lenses, promotes a smooth transition of light, and thus improves image quality. Preferably, 0.1 ≤ |F1 / F12| ≤ 1.2.

[0140] In this embodiment, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view (FOV) of the optical lens satisfy the condition: D / H / FOV ≤ 0.1. Satisfying this condition helps to ensure that the front aperture of the optical lens is small and the field of view is large, thus balancing miniaturization and a large field of view. Preferably, D / H / FOV ≤ 0.05. FOV is related to H; FOV is the field of view corresponding to the image height H.

[0141] In this embodiment, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the condition: D / H / θ≤2. Satisfying this condition helps to ensure that the front aperture of the optical lens is small and the field of view is large, thus balancing the characteristics of miniaturization and a large field of view. Preferably, D / H / θ≤1.5.

[0142] In this embodiment, the combined focal length F12 of the first and second lenses satisfies the following relationship with the total focal length F of the optical lens: -10 ≤ F12 / F ≤ -3. Satisfying this condition ensures that the combined focal length of the first and second lenses is negative and controls the focal length within a certain range, which helps in light collection and facilitates achieving a wide angle of view. Preferably, -8 ≤ F12 / F ≤ -3.12.

[0143] In this embodiment, the central radius of curvature R3 of the first side surface of the second lens, the central radius of curvature R4 of the second side surface of the second lens, and the central thickness d3 of the second lens satisfy the condition: 0.5 ≤ R3 / (R4+d3) ≤ 5. Satisfying this condition makes the shape of the second lens nearly concentric, resulting in an optical path difference between the peripheral rays and the central rays, diverging the central rays before they enter the rear optical system. This also helps to reduce the front diameter of the optical lens, decrease its size, and facilitate miniaturization and low cost. Preferably, 1 ≤ R3 / (R4+d3) ≤ 3.

[0144] In this embodiment, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the maximum field of view (FOV) of the optical lens satisfy the condition: D / F / FOV ≤ 0.5. Satisfying this condition helps to ensure a small front aperture of the optical lens, which is beneficial for miniaturization. Preferably, D / F / FOV ≤ 0.05.

[0145] In this embodiment, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the condition: D / F / θ≤2. Satisfying this condition helps to ensure a small front aperture of the optical lens, which is beneficial for miniaturization. Preferably, D / F / θ≤1.5.

[0146] In this embodiment, the total optical length of the optical lens, i.e., the distance TTL from the center of the first side surface of the first lens to the center of the imaging plane of the optical lens, satisfies the following condition with respect to the maximum field of view (FOV) of the optical lens: 0.46 ≤ 2 * TTL / FOV ≤ 1.5. Controlling this condition within a reasonable range allows the optical lens to achieve both miniaturization and a large field of view. Preferably, 0.55 ≤ 2 * TTL / FOV ≤ 1.

[0147] In this embodiment, the central radius of curvature R14 of the second side surface of the seventh lens and the central thickness d13 of the seventh lens satisfy the condition: R14 / d13≤-5. Satisfying this condition helps ensure a reasonable central radius of curvature and central thickness; a larger curvature results in a smoother lens surface, and a thinner central thickness, which is beneficial for reducing the overall size of the optical lens. Preferably, R14 / d13≤-10.

[0148] In this embodiment, the focal length F4 of the fourth lens satisfies the condition 0.1 ≤ F4 / F with the overall focal length F of the optical lens. Satisfying this condition helps ensure that the fourth lens has a positive optical power, converging light rays. This allows diverging light rays to smoothly enter the subsequent optical system while also lowering the point of incidence of light rays into the subsequent optical system, reducing the rear aperture and achieving miniaturization. Preferably, 0.5 ≤ F4 / F.

[0149] In this embodiment, the combined focal length F34 of the third and fourth lenses satisfies the following condition with respect to the overall focal length F of the optical lens: 0.1 ≤ F34 / F ≤ 3. Satisfying this condition helps ensure that the focal lengths of the third and fourth lenses are within a certain range, controlling the light path between the second and fifth lenses, reducing aberrations caused by large-angle light rays entering through the second lens, and simultaneously ensuring that the combined optical power of the third and fourth lenses is positive, which can suppress light rays, reduce the rear aperture, and achieve miniaturization. Preferably, 0.5 ≤ F34 / F ≤ 2.

[0150] In this embodiment, the focal length F3 of the third lens satisfies the condition 0.5 ≤ F3 / F with the overall focal length F of the optical lens. Satisfying this condition helps ensure that the third lens has a positive optical power, converging light rays. This allows diverging light rays to smoothly enter the subsequent optical system while also lowering the position of the light rays incident on the subsequent optical system, reducing the rear aperture and achieving miniaturization. Preferably, 1 ≤ F3 / F.

[0151] In this embodiment, the maximum field of view (FOV) of the optical lens, the total focal length (F) of the optical lens, and the image height (H) corresponding to the maximum field of view of the optical lens satisfy the condition: 85 ≤ (FOV × F) / H. Satisfying this condition allows the optical lens to simultaneously meet the characteristics of a telephoto lens and a large field of view; it helps the overall effect of the optical lens to maintain a large field of view and achieve a large central angular resolution. Preferably, 90 ≤ (FOV × F) / H.

[0152] In this embodiment, the image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the following condition: (H / 2) / (F*tan(θ / 2))≤1.2. Satisfying this condition ensures that increasing the focal length of the optical lens enhances telephoto capability, i.e., increases the angular resolution of the central region, while keeping the field of view and image plane size constant. Preferably, (H / 2) / (F*tan(θ / 2))≤0.8.

[0153] In this embodiment, the image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the maximum field of view (FOV) of the optical lens satisfy the following condition: |(F*FOV) / (HF*FOV)|≤2. Satisfying this condition ensures that, while maintaining the same image plane size, increasing the field of view achieves greater distortion, i.e., increases the angular resolution of the central region. Preferably, |(F*FOV) / (HF*FOV)|≤1.5.

[0154] In this embodiment, the image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the condition: |(F*θ) / (HF*θ)|≤5. Satisfying this condition ensures that, while maintaining the same image plane size, increasing the field of view achieves greater distortion, i.e., increases the angular resolution of the central region. Preferably, |(F*θ) / (HF*θ)|≤3.5.

[0155] In this embodiment, the central radius of curvature R1 of the first side surface of the first lens satisfies the following condition with respect to the focal length F of the entire optical lens: 0.1 ≤ R1 / F ≤ 3. Satisfying this condition results in a smaller central radius of curvature and a flatter edge on the first side surface of the first lens, allowing large-angle light rays to concentrate at the lens edge, which is beneficial for achieving a higher central angular resolution than the peripheral angular resolution. Preferably, 0.5 ≤ R1 / F ≤ 1.5.

[0156] In this embodiment, the central radius of curvature R1 of the first side surface of the first lens and the focal length F1 of the first lens satisfy the condition: -0.39 ≤ R1 / F1 ≤ -0.05. Satisfying this condition results in a smaller central radius of curvature and a flatter edge on the first side surface of the first lens, allowing large-angle light rays to concentrate at the lens edge, which is beneficial for achieving a higher central angular resolution than the peripheral angular resolution. Preferably, -0.33 ≤ R1 / F1 ≤ -0.1.

[0157] In this embodiment, the effective aperture diameter (DST) of the optical lens and the total focal length (F) of the optical lens satisfy the condition: 0.3 ≤ DST / F. Satisfying this condition ensures a large ratio between the effective aperture diameter and the total focal length of the optical lens, resulting in a larger aperture, greater light intake, and increased image brightness. Preferably, 0.65 ≤ DST / F.

[0158] In this embodiment, the overall focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy the condition: F / ENPD ≤ 2. Satisfying this condition is beneficial for achieving a small FNO, increasing light transmission, ensuring a large entrance pupil diameter, and improving relative illumination. Preferably, F / ENPD ≤ 1.8.

[0159] In this embodiment, the center thickness d10 of the fifth lens, the center thickness d11 of the sixth lens, the air gap d12 between the sixth and seventh lenses, the center thickness d13 of the seventh lens, and the total optical length of the optical lens (i.e., the distance TTL from the center of the first side surface of the first lens to the center of the imaging plane of the optical lens) satisfy the following condition: 0.05 ≤ (d10 + d11 + d12 + d13) / TTL ≤ 0.7. Reasonably controlling the distance between the fifth and seventh lenses ensures that light enters the seventh lens smoothly, which helps to reduce ghosting caused by the distance between the fifth and seventh lenses, further reducing the risk of ghosting. Preferably, 0.1 ≤ (d10 + d11 + d12 + d13) / TTL ≤ 0.5.

[0160] In this embodiment, the radius of curvature R6 of the first side surface of the third lens and the radius of curvature R7 of the second side surface of the third lens satisfy the following ratio: 0.5 ≤ R6 / R7 ≤ 10. By reasonably controlling the ratio between the radius of curvature R6 of the first side surface and the radius of curvature R7 of the second side surface of the third lens, the deviation of the incident and exit angles of light in different fields of view can be reduced, resulting in a smoother transition of light and thus reducing sensitivity. Preferably, 1.5 ≤ R6 / R7 ≤ 8.

[0161] Example 2

[0162] like Figures 1 to 10As shown, the optical lens, from the first side to the second side, includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The first lens has negative optical power; the second lens has optical power; the third lens has positive optical power; the fourth lens has positive optical power; the fifth lens has optical power; the sixth lens has optical power; and the seventh lens has positive optical power. The central radius of curvature R1 of the first side of the first lens satisfies the following relationship with the total focal length F of the optical lens: 0.1 ≤ R1 / F ≤ 3. By constraining the ratio between the central radius of curvature R1 of the first side of the first lens and the total focal length F of the optical lens within a reasonable range, the central radius of curvature of the first side of the first lens can be made smaller, and the edge flatter. This allows large-angle light rays to concentrate at the lens edge, which is beneficial for achieving a higher central angular resolution than the peripheral angular resolution. Preferably, -0.33 ≤ R1 / F1 ≤ -0.1.

[0163] In addition, the optical lens of this application uses seven lenses. By optimizing the optical power and surface shape of each lens, the optical lens of this application has at least one beneficial effect such as high resolution, miniaturization, large aperture, weak ghosting, small front aperture, large field of view, long focal length, and large center angle resolution.

[0164] In this embodiment, the first side surface of the first lens is convex, and the second side surface is concave. The first lens has negative optical power, which allows it to diverge light rays, ensuring that the light rays exiting the first lens maintain an upward trajectory. Under the same field of view, the light rays exiting the second side surface of the first lens provide a larger light-receiving surface for the subsequent optical system. The convexity of the first side surface and the concaveness of the second side surface of the first lens result in a smaller incident angle of light on the first side surface, allowing the light to reach the subsequent optical system smoothly, thus facilitating a large field of view. Designing the first side surface of the first lens as convex also facilitates the sliding of water droplets in practical environments such as rain and snow, reducing the interference of water droplets on image quality. The first lens is preferably made of a material with a high refractive index, which allows for a smaller front aperture. An aspherical lens can also be selected to further improve resolution, ensuring a large R-value at the center of the first side surface and a relatively smooth edge with a small R-value, thereby achieving the requirement of a large central angular resolution.

[0165] In this embodiment, the first side surface of the second lens is concave, and the second side surface is convex. The second lens has optical power; when the second lens has positive optical power, it has a relatively small positive optical power, resulting in less improvement in the light trajectory. The light emitted through the second lens still maintains an upward trajectory. Under the same field of view, the light emitted through the second side surface of the second lens allows the subsequent optical system to have a larger light receiving surface, which is beneficial for expanding the imaging surface. On the other hand, it allows for a larger aperture, resulting in a larger aperture and greater light intake, thus increasing the brightness of the image plane. The first side surface of the second lens is concave, and the second side surface is convex. Designing the second lens in a meniscus shape helps it collect the light entering through the first lens. Because the curvatures of the first and second sides of the second lens are similar, it facilitates a smooth transition of light on the second lens, reducing sensitivity. At the same time, the concave first side surface of the second lens, combined with the concave second side surface of the first lens, allows for a reduction in the front aperture of the optical lens, thus reducing its size. This design facilitates miniaturization and cost reduction. When the second lens has negative optical power, it diverges light. Under the same field of view, the light emitted from the second side of the second lens can provide a larger light receiving surface for the subsequent optical system. This is beneficial for expanding the imaging surface and increasing the physical aperture of the stop, resulting in a larger light intake and increased image brightness. The first side of the second lens is concave, and the second side is convex. Designing the second lens in a meniscus shape helps collect light entering through the first lens. Because the curvatures of the first and second sides of the second lens are similar, it facilitates a smooth transition of light on the second lens and reduces sensitivity. By rationally planning the surface shapes of the two surfaces of the second lens, making them nearly concentric circles, there is an optical path difference between the peripheral and central rays, which diverges the central rays and allows them to enter the subsequent optical system. This also reduces the front aperture of the optical lens and decreases its size, which is beneficial for miniaturization and cost reduction.

[0166] In this embodiment, the first side surface of the third lens is concave, and the second side surface is convex. The third lens has positive optical power, which is beneficial for converging light. On the one hand, it allows diverging light to smoothly enter the subsequent optical system; on the other hand, it lowers the position of the light entering the subsequent optical system, which helps to reduce the rear port diameter and facilitates miniaturization. The concave shape of the first side surface of the third lens and the convex shape of the second side surface of the third lens make the shape of the first side surface of the third lens match that of the second side surface of the second lens. This makes the light path between the second and third lenses smoother, thereby reducing sensitivity, reducing aberrations, and improving resolution. At the same time, it ensures that the light emitted from the second lens can be well received by the third lens, reducing the loss of light in each field of view and improving the relative illumination of each field of view.

[0167] In this embodiment, the first side surface of the fourth lens is convex, and the second side surface of the fourth lens is also convex. The fourth lens has positive optical power, which further converges the light rays, allowing them to smoothly transition to the rear lens after passing through the third and fourth lenses. Simultaneously, the converging effect of the fourth lens further reduces the rear aperture. Furthermore, the significant difference in shape between the second side surface of the third lens and the first side surface of the fourth lens results in a noticeable change in the light trajectory of the fourth lens. With the same fourth lens aperture, this achieves a reduction in the front aperture of the optical lens and overall miniaturization. The convex shape and large curvature of the first side surface of the fourth lens ensure a smooth transition of light rays after passing through the third lens to the rear lens, further improving resolution and contributing to a reduction in the overall size of the optical lens.

[0168] In this embodiment, the first side surface of the fourth lens is convex, and the second side surface is concave. This can converge light rays, reduce light divergence, and facilitate the smooth entry of light into the rear lens, thereby improving image quality. At the same time, the light-converging effect of the fourth lens can further reduce the rear aperture, which is beneficial for the miniaturization of optical lenses.

[0169] In this embodiment, the first side of the fifth lens is convex, and the second side is concave. At this time, the fifth lens has negative optical power and a gently sloping shape, allowing diverging light rays to converge smoothly and enter the rear, further smoothing the light path and reducing lens sensitivity. At least two positive optical power lenses are connected to the front of the fifth lens, which, while altering the light path, also introduce significant aberrations. The fifth lens, being negative optical power, has a diverging effect on light. By controlling the focal length of the fifth lens, various aberrations introduced by the front positive lenses can be effectively corrected, improving image quality.

[0170] In this embodiment, the first side surface of the fifth lens is concave, and the second side surface of the fifth lens is also concave. At this time, the fifth lens has negative optical power; it is a biconcave negative optical power lens. The concave first side surface causes a significant light reversal upon light entering the lens, clearly distinguishing the edge rays from the center rays in each field of view. This alters the trend of the edge rays, facilitating aberration correction between the center and edge rays in each field of view, and promoting high resolution. Simultaneously, it allows the light emitted from the fifth lens to diverge, resulting in smoother light emission and improved resolution. Furthermore, the fifth lens is preferably made of a high refractive index material, making it easier to pair with high dispersion coefficient lenses to correct chromatic aberration.

[0171] In this embodiment, both the first and second sides of the fifth lens are convex. The fifth lens then possesses positive optical power. The convexity of the first side of the fifth lens facilitates a reduction in the height of light entering the sixth lens, thereby decreasing the rear aperture and achieving miniaturization.

[0172] In this embodiment, both the first and second sides of the sixth lens are convex. The sixth lens has positive optical power, and the convexity of its first side allows the light rays entering from the fifth lens to converge further and enter the rear lenses more smoothly, thereby improving resolving power. The positive optical power of the sixth lens, combined with the negative optical power of the fifth lens, can improve astigmatism and field curvature, enhancing the resolving power of the optical system. By using a focal length ratio similar to that of the fifth lens, stable imaging can be maintained even at high and low temperatures.

[0173] In this embodiment, the first side surface of the sixth lens is convex, and the second side surface of the sixth lens is concave. At this time, the fifth lens has positive optical power. The positive optical power causes the light rays to converge after passing through the sixth lens, reducing the upward trend of the light rays. This avoids light energy loss caused by an excessively large angle between the large field-of-view light rays and the chip's main ray when they reach the imaging surface, thus improving the illumination of the edge field of view.

[0174] In this embodiment, the first side surface of the sixth lens is concave, and the second side surface of the sixth lens is convex. At this time, the sixth lens has negative optical power, which is beneficial for collecting light rays entering through the fifth lens, ensuring a smooth transition of light path and improving resolution. The concave first side surface helps to make the light rays trend upwards, thereby expanding the imaging range and ensuring the large image area characteristic.

[0175] In this embodiment, both the first and second sides of the seventh lens are convex. The seventh lens has positive optical power and a large focal length, resulting in minimal alteration to the light trajectory. This allows light rays that have passed through the fifth and sixth lenses to smoothly transition to the imaging plane, improving astigmatism and field curvature, and enhancing the resolving power of the optical system. The convexity of both the first and second sides of the seventh lens causes light rays to converge downwards after passing through the second side, with a larger radius, which helps to shorten the physical distance, reduce the overall length of the optical system, and facilitate miniaturization. The seventh lens is preferably an aspherical lens, which effectively corrects astigmatism and field curvature, improving the resolving power of the optical system.

[0176] In this embodiment, the optical lens also includes an aperture stop, which is disposed between the second lens and the third lens. The aperture stop's location between the second and third lenses facilitates an increase in aperture diameter; it effectively concentrates the light entering the optical system, reduces the aperture of each lens in the optical system, and lowers the system's assembly sensitivity.

[0177] In this embodiment, the fifth and sixth lenses are cemented together to form a cemented lens. Cementing the fifth and sixth lenses reduces the air gap between them, making the overall optical system more compact. Cementing also shortens the physical length of the optical system, facilitating miniaturization. Furthermore, cementing eliminates significant light refraction between the fifth and sixth lenses, effectively transitioning forward light and reducing lens sensitivity. Using materials with different Abbe numbers in combination facilitates overall aberration correction and improves image quality. When the fifth lens has positive optical power, it helps converge light; when it has negative optical power, it prevents excessive divergence of light from the first side, ensuring a smooth transition to the rear lenses. This arrangement also reduces the number of assembly components between the fifth and sixth lenses, simplifying the assembly process and lowering costs. It also reduces tolerance sensitivity issues caused by tilting or eccentricity during lens assembly, minimizes light loss due to reflections between the two lenses, improving illumination, and helps eliminate chromatic aberration, while retaining some residual chromatic aberration to balance the system's overall color accuracy. Under the premise of compact structure, it is conducive to improving optical performance such as resolution, distortion optimization, and CRA. It can reduce ghosting to a certain extent, share the overall chromatic aberration correction of the system, effectively correct aberrations, and improve resolution.

[0178] In this embodiment, at least two of the first, third, fourth, and seventh lenses are aspherical lenses. Preferably, all of the first, third, fourth, and seventh lenses are aspherical lenses. Using two or more aspherical lenses helps to improve field curvature and astigmatism, thereby enhancing the resolving power of the optical lens.

[0179] In this embodiment, the first side surface of the seventh lens is an inverted curved surface. By setting an inverted curved surface on the seventh lens, it is beneficial to correct astigmatism and field curvature.

[0180] In this embodiment, the ratio of the total focal length F of the optical lens to the image height H corresponding to the maximum field of view of the optical lens satisfies the condition: 0.1 ≤ F / H ≤ 1.8. By constraining the ratio of the total focal length F of the optical lens to the image height H corresponding to the maximum field of view of the optical lens within a certain range, it is beneficial to improve resolving power. Preferably, 0.5 ≤ F / H ≤ 1.2.

[0181] In this embodiment, the focal length F1 of the first lens and the combined focal length F12 of the first and second lenses satisfy the condition: 0.05 ≤ |F1 / F12| ≤ 2. Satisfying this condition facilitates a reasonable allocation of the focal lengths of the first and second lenses, promotes a smooth transition of light, and thus improves image quality. Preferably, 0.1 ≤ |F1 / F12| ≤ 1.2.

[0182] In this embodiment, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view (FOV) of the optical lens satisfy the condition: D / H / FOV ≤ 0.1. Satisfying this condition helps to ensure that the front aperture of the optical lens is small and the field of view is large, thus balancing miniaturization and a large field of view. Preferably, D / H / FOV ≤ 0.05. FOV is related to H; FOV is the field of view corresponding to the image height H.

[0183] In this embodiment, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the condition: D / H / θ≤2. Satisfying this condition helps to ensure that the front aperture of the optical lens is small and the field of view is large, thus balancing the characteristics of miniaturization and a large field of view. Preferably, D / H / θ≤1.5.

[0184] In this embodiment, the combined focal length F12 of the first and second lenses satisfies the following relationship with the total focal length F of the optical lens: -10 ≤ F12 / F ≤ -3. Satisfying this condition ensures that the combined focal length of the first and second lenses is negative and controls the focal length within a certain range, which helps in light collection and facilitates achieving a wide angle of view. Preferably, -8 ≤ F12 / F ≤ -3.12.

[0185] In this embodiment, the central radius of curvature R3 of the first side surface of the second lens, the central radius of curvature R4 of the second side surface of the second lens, and the central thickness d3 of the second lens satisfy the condition: 0.5 ≤ R3 / (R4+d3) ≤ 5. Satisfying this condition makes the shape of the second lens nearly concentric, resulting in an optical path difference between the peripheral rays and the central rays, diverging the central rays before they enter the rear optical system. This also helps to reduce the front diameter of the optical lens, decrease its size, and facilitate miniaturization and low cost. Preferably, 1 ≤ R3 / (R4+d3) ≤ 3.

[0186] In this embodiment, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the maximum field of view (FOV) of the optical lens satisfy the condition: D / F / FOV ≤ 0.5. Satisfying this condition helps to ensure a small front aperture of the optical lens, which is beneficial for miniaturization. Preferably, D / F / FOV ≤ 0.05.

[0187] In this embodiment, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the condition: D / F / θ≤2. Satisfying this condition helps to ensure a small front aperture of the optical lens, which is beneficial for miniaturization. Preferably, D / F / θ≤1.5.

[0188] In this embodiment, the total optical length of the optical lens, i.e., the distance TTL from the center of the first side surface of the first lens to the center of the imaging plane of the optical lens, satisfies the following condition with respect to the maximum field of view (FOV) of the optical lens: 0.46 ≤ 2 * TTL / FOV ≤ 1.5. Controlling this condition within a reasonable range allows the optical lens to achieve both miniaturization and a large field of view. Preferably, 0.55 ≤ 2 * TTL / FOV ≤ 1.

[0189] In this embodiment, the central radius of curvature R14 of the second side surface of the seventh lens and the central thickness d13 of the seventh lens satisfy the condition: R14 / d13≤-5. Satisfying this condition helps ensure a reasonable central radius of curvature and central thickness; a larger curvature results in a smoother lens surface, and a thinner central thickness, which is beneficial for reducing the overall size of the optical lens. Preferably, R14 / d13≤-10.

[0190] In this embodiment, the focal length F4 of the fourth lens satisfies the condition 0.1 ≤ F4 / F with the overall focal length F of the optical lens. Satisfying this condition helps ensure that the fourth lens has a positive optical power, converging light rays. This allows diverging light rays to smoothly enter the subsequent optical system while also lowering the point of incidence of light rays into the subsequent optical system, reducing the rear aperture and achieving miniaturization. Preferably, 0.5 ≤ F4 / F.

[0191] In this embodiment, the combined focal length F34 of the third and fourth lenses satisfies the following condition with respect to the overall focal length F of the optical lens: 0.1 ≤ F34 / F ≤ 3. Satisfying this condition helps ensure that the focal lengths of the third and fourth lenses are within a certain range, controlling the light path between the second and fifth lenses, reducing aberrations caused by large-angle light rays entering through the second lens, and simultaneously ensuring that the combined optical power of the third and fourth lenses is positive, which can suppress light rays, reduce the rear aperture, and achieve miniaturization. Preferably, 0.5 ≤ F34 / F ≤ 2.

[0192] In this embodiment, the focal length F3 of the third lens satisfies the condition 0.5 ≤ F3 / F with the overall focal length F of the optical lens. Satisfying this condition helps ensure that the third lens has a positive optical power, converging light rays. This allows diverging light rays to smoothly enter the subsequent optical system while also lowering the position of the light rays incident on the subsequent optical system, reducing the rear aperture and achieving miniaturization. Preferably, 1 ≤ F3 / F.

[0193] In this embodiment, the maximum field of view (FOV) of the optical lens, the total focal length (F) of the optical lens, and the image height (H) corresponding to the maximum field of view of the optical lens satisfy the condition: 85 ≤ (FOV × F) / H. Satisfying this condition allows the optical lens to simultaneously meet the characteristics of a telephoto lens and a large field of view; it helps the overall effect of the optical lens to maintain a large field of view and achieve a large central angular resolution. Preferably, 90 ≤ (FOV × F) / H.

[0194] In this embodiment, the image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the following condition: (H / 2) / (F*tan(θ / 2))≤1.2. Satisfying this condition ensures that increasing the focal length of the optical lens enhances telephoto capability, i.e., increases the angular resolution of the central region, while keeping the field of view and image plane size constant. Preferably, (H / 2) / (F*tan(θ / 2))≤0.8.

[0195] In this embodiment, the image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the maximum field of view (FOV) of the optical lens satisfy the following condition: |(F*FOV) / (HF*FOV)|≤2. Satisfying this condition ensures that, while maintaining the same image plane size, increasing the field of view achieves greater distortion, i.e., increases the angular resolution of the central region. Preferably, |(F*FOV) / (HF*FOV)|≤1.5.

[0196] In this embodiment, the image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the condition: |(F*θ) / (HF*θ)|≤5. Satisfying this condition ensures that, while maintaining the same image plane size, increasing the field of view achieves greater distortion, i.e., increases the angular resolution of the central region. Preferably, |(F*θ) / (HF*θ)|≤3.5.

[0197] In this embodiment, the central radius of curvature R1 of the first side surface of the first lens and the focal length F1 of the first lens satisfy the condition: -0.39 ≤ R1 / F1 ≤ -0.05. Satisfying this condition results in a smaller central radius of curvature and a flatter edge on the first side surface of the first lens, allowing large-angle light rays to concentrate at the lens edge, which is beneficial for achieving a higher central angular resolution than the peripheral angular resolution. Preferably, -0.33 ≤ R1 / F1 ≤ -0.1.

[0198] In this embodiment, the effective aperture diameter (DST) of the optical lens and the total focal length (F) of the optical lens satisfy the condition: 0.3 ≤ DST / F. Satisfying this condition ensures a large ratio between the effective aperture diameter and the total focal length of the optical lens, resulting in a larger aperture, greater light intake, and increased image brightness. Preferably, 0.65 ≤ DST / F.

[0199] In this embodiment, the overall focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy the condition: F / ENPD ≤ 2. Satisfying this condition is beneficial for achieving a small FNO, increasing light transmission, ensuring a large entrance pupil diameter, and improving relative illumination. Preferably, F / ENPD ≤ 1.8.

[0200] In this embodiment, the center thickness d10 of the fifth lens, the center thickness d11 of the sixth lens, the air gap d12 between the sixth and seventh lenses, the center thickness d13 of the seventh lens, and the total optical length of the optical lens (i.e., the distance TTL from the center of the first side surface of the first lens to the center of the imaging plane of the optical lens) satisfy the following condition: 0.05 ≤ (d10 + d11 + d12 + d13) / TTL ≤ 0.7. Reasonably controlling the distance between the fifth and seventh lenses ensures that light enters the seventh lens smoothly, which helps to reduce ghosting caused by the distance between the fifth and seventh lenses, further reducing the risk of ghosting. Preferably, 0.1 ≤ (d10 + d11 + d12 + d13) / TTL ≤ 0.5.

[0201] In this embodiment, the radius of curvature R6 of the first side surface of the third lens and the radius of curvature R7 of the second side surface of the third lens satisfy the following ratio: 0.5 ≤ R6 / R7 ≤ 10. By reasonably controlling the ratio between the radius of curvature R6 of the first side surface and the radius of curvature R7 of the second side surface of the third lens, the deviation of the incident and exit angles of light in different fields of view can be reduced, resulting in a smoother transition of light and thus reducing sensitivity. Preferably, 1.5 ≤ R6 / R7 ≤ 8.

[0202] Optionally, the aforementioned optical lens may also include a filter for correcting color deviation and a protective glass for protecting the photosensitive element located on the imaging surface.

[0203] The optical lens in this application can employ multiple lens elements, such as the seven elements mentioned above. This application does not specifically limit the number of spherical and aspherical lenses; the number of aspherical lenses can be increased when image quality is a primary concern. Aspherical lenses are characterized by a continuously changing curvature from the lens center to the periphery. Unlike spherical lenses, which have a constant curvature from the lens center to the periphery, aspherical lenses have superior curvature radius characteristics, offering advantages in improving distortion and astigmatism. Using aspherical lenses can minimize aberrations that occur during image formation, thereby improving image quality.

[0204] In this exemplary embodiment, the solution is not limited to plastic or glass for the lenses. If temperature performance is a primary concern, the first, second, third, fourth, fifth, sixth, and seventh lenses can all be glass lenses. Optical lenses made of glass can suppress the shift in the back focus of the optical lens due to temperature changes, thereby improving system stability. Simultaneously, using glass avoids lens blurring caused by high and low temperature variations in the operating environment, thus preventing disruption to the normal use of the optical lens. For example, an all-glass optical lens has a wider temperature range, maintaining stable optical performance within the range of -40℃ to 105℃. Specifically, when resolution and reliability are of primary concern, the first to seventh lenses can all be aspherical glass lenses. Of course, in applications where temperature stability requirements are lower, the first to seventh lenses in the optical lens can also be made entirely of plastic. Using plastic to make optical lenses can effectively reduce manufacturing costs. Alternatively, the first to seventh lenses in the optical lens can also be made of a combination of plastic and glass.

[0205] This application also provides an electronic device, including the aforementioned optical lens and an imaging element that converts the optical image formed by the optical lens into an electrical signal. The imaging element may be a photocoupled device (CCD) or a complementary metal oxide semiconductor device (CMOS). The electronic device may be a standalone imaging device such as a digital camera, or an imaging module integrated into a mobile electronic device such as a mobile phone. This electronic device is equipped with the optical lens described above.

[0206] However, those skilled in the art will understand that the number of lenses constituting the optical lens can be varied to obtain the various results and advantages described herein without departing from the technical solutions claimed in this application. For example, although seven lenses are described as an example in the embodiments, the optical lens is not limited to including seven lenses. If necessary, the optical lens may also include other numbers of lenses.

[0207] The following description, with reference to the accompanying drawings, further illustrates examples of specific surface shapes and parameters of optical lenses applicable to the above embodiments.

[0208] It should be noted that any of the examples one through ten below are applicable to all embodiments of this application.

[0209] Example 1

[0210] like Figure 1 The diagram shown is a schematic of the optical lens structure of Example 1.

[0211] like Figure 1 As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, sixth lens L6, seventh lens L7, filter L8, first side surface of protective glass S17, second side surface of protective glass S18, and imaging surface IMA.

[0212] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has positive optical power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 has positive optical power, its first side surface S6 is concave, and its second side surface S7 is convex. The fourth lens L4 has positive optical power, its first side surface S8 is convex, and its second side surface S9 is convex. The fifth lens L5 has negative optical power, its first side surface S10 is convex, and its second side surface S11 is concave. The sixth lens L6 has positive optical power, its first side surface S11 is convex, and its second side surface S12 is convex. The seventh lens L7 has positive optical power, its first side surface S13 is convex, and its second side surface S14 is convex. The filter L8 has a first side surface S15 and a second side surface S16. Light from the first side passes sequentially through surfaces S11 to S18 and is finally imaged onto the imaging plane IMA. Since the fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens, S11 is both the second side surface of the fifth lens and the first side surface of the sixth lens.

[0213] In this example, the total effective focal length F of the optical lens is 9.425mm, the maximum field of view (FOV) of the optical lens is 110°, and the total length (TTL) of the optical lens is 43.196mm.

[0214] Table 1 shows the basic structural parameters of the optical lens in Example 1, where the units for radius of curvature and thickness / distance are millimeters (mm).

[0215]

[0216]

[0217] Table 1 shows that the surface shape of each aspherical lens in Example 1 can be defined using, but is not limited to, the following aspherical formulas:

[0218]

[0219] Where x is the distance vector from the vertex of the aspherical surface at a height h along the optical axis; c is the paraxial curvature of the aspherical surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient; A, B, C, D, E, F, and G are all higher-order coefficients. Table 2 below shows the conic coefficient k and the higher-order coefficients A, B, C, D, E, F, and G for the aspherical lens surfaces S1, S2, S6, S7, S8, S9, S13, and S14 in Example 1.

[0220] Higher order terms / 4 6 8 Surf K A B C 1 -0.2725 -4.6827E-04 -8.8026E-06 -2.4789E-07 2 -0.4204 -1.6343E-03 -7.1458E-05 1.7473E-06 6 88.1940 -4.2163E-04 -2.9812E-06 4.9175E-07 7 8.7590 -3.7497E-04 4.0993E-06 -1.6329E-07 8 -16.8620 1.9442E-04 -8.1326E-06 1.6366E-07 9 -6.2082 1.1055E-05 -2.8159E-06 -2.9271E-08 13 99.0000 3.8515E-04 1.2550E-05 -1.5708E-06 14 44.9080 -1.5399E-03 8.5983E-05 -2.9642E-06 Higher order terms 10 12 14 16 Surf D E F G 1 1.4460E-08 -2.9747E-10 3.1112E-12 -1.4664E-14 2 7.0884E-08 -8.4466E-09 2.7170E-10 -3.4010E-12 6 -6.5992E-08 3.9204E-09 -9.6886E-11 7.0075E-13 7 1.8335E-09 3.9232E-10 -1.8695E-11 2.7898E-13 8 -1.6875E-09 -2.5816E-12 3.5326E-13 -2.5330E-15 9 5.9874E-10 2.8042E-11 -7.3913E-13 5.3323E-15 13 7.4495E-08 -2.0322E-09 2.9682E-11 -1.7901E-13 14 6.1118E-08 -7.9689E-10 6.2524E-12 -2.1961E-14

[0221] Table 2

[0222] Example 2

[0223] like Figure 2 The image shows an optical lens of Example 2 of this application. For the sake of brevity, descriptions similar to those in Example 1 will be omitted in this example and the following examples. Figure 2 A schematic diagram of the optical lens structure of Example 2 is shown.

[0224] like Figure 2 As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, sixth lens L6, seventh lens L7, filter L8, first side surface of protective glass S17, second side surface of protective glass S18, and imaging surface IMA.

[0225] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has positive optical power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 has positive optical power, its first side surface S6 is concave, and its second side surface S7 is convex. The fourth lens L4 has positive optical power, its first side surface S8 is convex, and its second side surface S9 is convex. The fifth lens L5 has negative optical power, its first side surface S10 is convex, and its second side surface S11 is concave. The sixth lens L6 has positive optical power, its first side surface S11 is convex, and its second side surface S12 is convex. The seventh lens L7 has positive optical power, its first side surface S13 is convex, and its second side surface S14 is convex. The filter L8 has a first side surface S15 and a second side surface S16. Light from the first side passes sequentially through surfaces S11 to S18 and is finally imaged onto the imaging plane IMA. Since the fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens, S11 is both the second side surface of the fifth lens and the first side surface of the sixth lens.

[0226] In this example, the total effective focal length F of the optical lens is 9.402mm, the maximum field of view (FOV) of the optical lens is 110°, and the total length (TTL) of the optical lens is 43.106mm.

[0227] Table 3 shows the basic structural parameters of the optical lens in Example 2, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm).

[0228]

[0229]

[0230] Table 3

[0231] Table 4 below shows the conic coefficient k and the coefficients A, B, C, D, E, F, and G of each higher-order term that can be used for the aspherical lens surfaces S1, S2, S6, S7, S8, S9, S13, and S14 in Example 2.

[0232] Higher order terms / 4 6 8 Surf K A B C 1 -0.2725 -4.6827E-04 -8.8026E-06 -2.4789E-07 2 -0.4204 -1.6343E-03 -7.1458E-05 1.7473E-06 6 88.1940 -4.2163E-04 -2.9812E-06 4.9175E-07 7 8.7590 -3.7497E-04 4.0993E-06 -1.6329E-07 8 -16.8620 1.9442E-04 -8.1326E-06 1.6366E-07 9 -6.2082 1.1055E-05 -2.8159E-06 -2.9271E-08 13 99.0000 3.8515E-04 1.2550E-05 -1.5708E-06 14 44.9080 -1.5399E-03 8.5983E-05 -2.9642E-06 Higher order terms 10 12 14 16 Surf D E F G 1 1.4460E-08 -2.9747E-10 3.1112E-12 -1.4664E-14 2 7.0884E-08 -8.4466E-09 2.7170E-10 -3.4010E-12 6 -6.5992E-08 3.9204E-09 -9.6886E-11 7.0075E-13 7 1.8335E-09 3.9232E-10 -1.8695E-11 2.7898E-13 8 -1.6875E-09 -2.5816E-12 3.5326E-13 -2.5330E-15 9 5.9874E-10 2.8042E-11 -7.3913E-13 5.3323E-15 13 7.4495E-08 -2.0322E-09 2.9682E-11 -1.7901E-13 14 6.1118E-08 -7.9689E-10 6.2524E-12 -2.1961E-14

[0233] Table 4

[0234] Example 3

[0235] like Figure 3 As shown, an optical lens of Example 3 of this application is described. Figure 3 A schematic diagram of the optical lens structure of Example 3 is shown.

[0236] like Figure 3 As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, sixth lens L6, seventh lens L7, filter L8, first side surface of protective glass S17, second side surface of protective glass S18, and imaging surface IMA.

[0237] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has negative optical power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 has positive optical power, its first side surface S6 is concave, and its second side surface S7 is convex. The fourth lens L4 has positive optical power, its first side surface S8 is convex, and its second side surface S9 is convex. The fifth lens L5 has negative optical power, its first side surface S10 is concave, and its second side surface S11 is concave. The sixth lens L6 has positive optical power, its first side surface S11 is convex, and its second side surface S12 is convex. The seventh lens L7 has positive optical power, its first side surface S13 is convex, and its second side surface S14 is convex. The filter L8 has a first side surface S15 and a second side surface S16. Light from the first side passes sequentially through surfaces S11 to S18 and is finally imaged onto the imaging plane IMA. Since the fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens, S11 is both the second side surface of the fifth lens and the first side surface of the sixth lens.

[0238] In this example, the total effective focal length F of the optical lens is 9.312mm, the maximum field of view (FOV) of the optical lens is 110°, and the total length (TTL) of the optical lens is 42.741mm.

[0239] Table 5 shows the basic structural parameters of the optical lens in Example 3, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm).

[0240] Surf Radius Thickness Nd Vd 1 7.025 3.705 1.81 41.00 2 4.091 4.432 3 -9.993 6.500 1.80 46.57 4 -13.796 -0.300 STO Infinity 1.132 6 -31.300 3.704 1.81 41.00 7 -9.928 0.406 8 30.970 8.150 1.62 63.41 9 -10.664 0.100 10 -98.000 2.478 1.92 20.88 11 8.470 5.500 1.57 71.31 12 -70.100 0.300 13 74.562 3.782 1.69 31.08 14 -144.220 0.310 15 Infinity 0.500 1.52 64.21 16 Infinity 1.543 17 Infinity 0.500 1.52 64.21 18 Infinity -0.177 IMA / /

[0241] Table 5

[0242] Table 6 below shows the conic coefficient k and the coefficients A, B, C, D, E, F, and G of each higher-order term that can be used for the aspherical lens surfaces S1, S2, S6, S7, S8, S9, S13, and S14 in Example 3.

[0243]

[0244]

[0245] Table 6

[0246] Example 4

[0247] like Figure 4 As shown, the optical lens of Example 4 of this application is described. Figure 4 A schematic diagram of the optical lens structure of Example 4 is shown.

[0248] like Figure 4 As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, sixth lens L6, seventh lens L7, filter L8, first side surface of protective glass S17, second side surface of protective glass S18, and imaging surface IMA.

[0249] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has negative optical power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 has positive optical power, its first side surface S6 is concave, and its second side surface S7 is convex. The fourth lens L4 has positive optical power, its first side surface S8 is convex, and its second side surface S9 is convex. The fifth lens L5 has negative optical power, its first side surface S10 is concave, and its second side surface S11 is concave. The sixth lens L6 has positive optical power, its first side surface S11 is convex, and its second side surface S12 is convex. The seventh lens L7 has positive optical power, its first side surface S13 is convex, and its second side surface S14 is convex. The filter L8 has a first side surface S15 and a second side surface S16. Light from the first side passes sequentially through surfaces S11 to S18 and is finally imaged onto the imaging plane IMA. Since the fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens, S11 is both the second side surface of the fifth lens and the first side surface of the sixth lens.

[0250] In this example, the total effective focal length F of the optical lens is 9.368mm, the maximum field of view (FOV) of the optical lens is 110°, and the total length (TTL) of the optical lens is 42.852mm.

[0251] Table 7 shows the basic structural parameters of the optical lens in Example 4, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm).

[0252]

[0253]

[0254] Table 7

[0255] Table 8 below shows the conic coefficient k and the coefficients A, B, C, D, E, F, and G of each higher-order term that can be used for the aspherical lens surfaces S1, S2, S6, S7, S8, S9, S13, and S14 in Example 4.

[0256] Higher order terms / 4 6 8 Surf K A B C 1 -0.3356 -4.1901E-04 -1.0441E-05 -2.3088E-07 2 -0.4642 -1.4184E-03 -7.9001E-05 1.8358E-06 6 9.3355 -4.9881E-04 -1.6411E-06 3.5041E-07 7 -0.7973 -1.2226E-04 -4.5707E-06 1.7183E-08 8 -8.8119 2.3471E-04 -7.2305E-06 1.3267E-07 9 -3.7151 -3.2619E-05 -2.1693E-06 -3.1845E-08 13 99.0000 4.9692E-04 1.8778E-05 -1.8593E-06 14 99.0000 -1.5167E-03 9.6655E-05 -3.2285E-06 Higher order terms 10 12 14 16 Surf D E F G 1 1.3574E-08 -2.7810E-10 2.9711E-12 -1.4841E-14 2 6.9814E-08 -8.3251E-09 2.7453E-10 -3.5632E-12 6 -6.3749E-08 3.9610E-09 -9.7095E-11 5.5629E-13 7 -3.2167E-09 4.3179E-10 -1.7786E-11 2.4837E-13 8 -5.9873E-10 -4.8825E-11 8.9280E-13 -2.4842E-15 9 8.0149E-10 1.2338E-11 -5.3340E-13 4.6604E-15 13 8.2395E-08 -2.1292E-09 2.9748E-11 -1.7711E-13 14 6.5673E-08 -8.5610E-10 6.2646E-12 -2.0455E-14

[0257] Table 8

[0258] Example 5

[0259] like Figure 5 As shown, an optical lens of Example 5 of this application is described. Figure 5 A schematic diagram of the optical lens structure of Example 5 is shown.

[0260] like Figure 5 As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, sixth lens L6, seventh lens L7, filter L8, first side surface of protective glass S17, second side surface of protective glass S18, and imaging surface IMA.

[0261] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has positive optical power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 has positive optical power, its first side surface S6 is concave, and its second side surface S7 is convex. The fourth lens L4 has positive optical power, its first side surface S8 is convex, and its second side surface S9 is convex. The fifth lens L5 has negative optical power, its first side surface S10 is convex, and its second side surface S11 is concave. The sixth lens L6 has positive optical power, its first side surface S11 is convex, and its second side surface S12 is concave. The seventh lens L7 has positive optical power, its first side surface S13 is convex, and its second side surface S14 is convex. The filter L8 has a first side surface S15 and a second side surface S16. Light from the first side passes sequentially through surfaces S11 to S18 and is finally imaged onto the imaging plane IMA. Since the fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens, S11 is both the second side surface of the fifth lens and the first side surface of the sixth lens.

[0262] In this example, the total effective focal length F of the optical lens is 9.505mm, the maximum field of view (FOV) of the optical lens is 110°, and the total length (TTL) of the optical lens is 43.308mm.

[0263] Table 9 shows the basic structural parameters of the optical lens in Example 5, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm).

[0264]

[0265]

[0266] Table 9

[0267] Table 10 below shows the conic coefficient k and the coefficients A, B, C, D, E, F, and G of each higher-order term that can be used for the aspherical lens surfaces S1, S2, S6, S7, S8, S9, S13, and S14 in Example 5.

[0268] Higher order terms / 4 6 8 Surf K A B C 1 -0.2563 -4.8757E-04 -8.8215E-06 -2.3502E-07 2 -0.3950 -1.6926E-03 -6.7998E-05 1.7378E-06 6 1.0574 -4.1047E-04 -2.6204E-06 5.1179E-07 7 11.5190 -3.3278E-04 4.6299E-06 -1.6104E-07 8 -17.4500 1.8532E-04 -8.5379E-06 1.5586E-07 9 -4.3529 -5.9919E-08 -2.7659E-06 -3.0040E-08 13 99.0000 2.6987E-04 1.3769E-05 -1.5628E-06 14 96.3420 -1.6850E-03 8.8622E-05 -3.0072E-06 Higher order terms 10 12 14 16 Surf D E F G 1 1.4574E-08 -3.0384E-10 3.1683E-12 -1.4664E-14 2 7.0001E-08 -8.4466E-09 2.7170E-10 -3.4010E-12 6 -6.5904E-08 3.9204E-09 -9.6886E-11 7.0075E-13 7 2.2226E-09 3.9232E-10 -1.8695E-11 2.7898E-13 8 -1.6015E-09 -5.8158E-13 3.4911E-13 -2.5330E-15 9 5.6053E-10 2.7664E-11 -7.1446E-13 5.3323E-15 13 7.3453E-08 -2.0085E-09 2.9682E-11 -1.7901E-13 14 6.2158E-08 -8.0362E-10 6.2524E-12 -2.1961E-14

[0269] Table 10

[0270] Example 6

[0271] like Figure 6 As shown, an optical lens of Example Six of this application is described. Figure 6 A schematic diagram of the optical lens structure of Example Six is ​​shown.

[0272] like Figure 6 As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, sixth lens L6, seventh lens L7, filter L8, first side surface of protective glass S17, second side surface of protective glass S18, and imaging surface IMA.

[0273] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has positive optical power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 has positive optical power, its first side surface S6 is concave, and its second side surface S7 is convex. The fourth lens L4 has positive optical power, its first side surface S8 is convex, and its second side surface S9 is convex. The fifth lens L5 has negative optical power, its first side surface S10 is convex, and its second side surface S11 is concave. The sixth lens L6 has positive optical power, its first side surface S11 is convex, and its second side surface S12 is concave. The seventh lens L7 has positive optical power, its first side surface S13 is convex, and its second side surface S14 is convex. The filter L8 has a first side surface S15 and a second side surface S16. Light from the first side passes sequentially through surfaces S11 to S18 and is finally imaged onto the imaging plane IMA. Since the fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens, S11 is both the second side surface of the fifth lens and the first side surface of the sixth lens.

[0274] In this example, the total effective focal length F of the optical lens is 9.523mm, the maximum field of view (FOV) of the optical lens is 110°, and the total length (TTL) of the optical lens is 43.099mm.

[0275] Table 11 shows the basic structural parameters of the optical lens in Example 6, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm).

[0276] Surf Radius Thickness Nd Vd 1 7.561 3.908 1.81 41.00 2 4.264 4.417 3 -9.144 6.500 1.80 46.57 4 -10.613 -0.300 STO Infinity 0.510 6 -116.000 3.190 1.81 41.00 7 -25.686 3.305 8 17.550 6.425 1.62 63.41 9 -16.110 0.500 10 24.110 1.095 1.92 20.88 11 7.200 4.605 1.57 71.31 12 91.100 0.320 13 71.650 5.481 1.69 31.18 14 -136.000 0.319 15 Infinity 0.500 1.52 64.21 16 Infinity 1.602 17 Infinity 0.500 1.52 64.21 18 Infinity 0.223 IMA / /

[0277] Table 11

[0278] Table 12 below shows the conic coefficient k and the coefficients A, B, C, D, E, F, and G of each higher-order term that can be used for the aspherical lens surfaces S1, S2, S6, S7, S8, S9, S13, and S14 in Example Six.

[0279]

[0280]

[0281] Table 12

[0282] Example 7

[0283] like Figure 7 As shown, an optical lens of Example Seven of this application is described. Figure 7 A schematic diagram of the optical lens structure of Example 7 is shown.

[0284] like Figure 7 As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, sixth lens L6, seventh lens L7, filter L8, first side surface of protective glass S17, second side surface of protective glass S18, and imaging surface IMA.

[0285] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has positive optical power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 has positive optical power, its first side surface S6 is concave, and its second side surface S7 is convex. The fourth lens L4 has positive optical power, its first side surface S8 is convex, and its second side surface S9 is concave. The fifth lens L5 has negative optical power, its first side surface S10 is convex, and its second side surface S11 is concave. The sixth lens L6 has positive optical power, its first side surface S11 is convex, and its second side surface S12 is convex. The seventh lens L7 has positive optical power, its first side surface S13 is convex, and its second side surface S14 is convex. The filter L8 has a first side surface S15 and a second side surface S16. Light from the first side passes sequentially through surfaces S11 to S18 and is finally imaged onto the imaging plane IMA. Since the fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens, S11 is both the second side surface of the fifth lens and the first side surface of the sixth lens. The first side surface S13 of the seventh lens is a curved surface.

[0286] In this example, the total effective focal length F of the optical lens is 9.342mm, the maximum field of view (FOV) of the optical lens is 110°, and the total length (TTL) of the optical lens is 42.952mm.

[0287] Table 13 shows the basic structural parameters of the optical lens of Example 7, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm).

[0288]

[0289]

[0290] Table 13

[0291] Table 14 below shows the conic coefficient k and the coefficients A, B, C, D, E, F, and G of each higher-order term that can be used for the aspherical lens surfaces S1, S2, S6, S7, S8, S9, S13, and S14 in Example 7.

[0292] Higher order terms / 4 6 8 Surf K A B C 1 -0.2488 -4.6113E-04 -8.1374E-06 -2.4796E-07 2 -0.3695 -1.6145E-03 -6.6353E-05 1.6018E-06 6 -27.2840 -4.6895E-04 -4.3188E-06 5.4017E-07 7 11.2010 -4.5725E-04 1.0943E-05 -2.6514E-07 8 -7.1869 3.0965E-04 -7.1314E-06 1.7310E-07 9 44.2890 1.8717E-04 -3.9377E-06 -1.8580E-08 13 -99.0000 1.2052E-04 1.6597E-05 -1.6420E-06 14 99.0000 -1.7745E-03 8.8811E-05 -2.9632E-06 Higher order terms 10 12 14 16 Surf D E F G 1 1.4511E-08 -3.0055E-10 3.1507E-12 -1.4664E-14 2 7.3585E-08 -8.4466E-09 2.7170E-10 -3.4010E-12 6 -6.8615E-08 3.9204E-09 -9.6886E-11 7.0075E-13 7 4.1027E-09 3.9232E-10 -1.8695E-11 2.7898E-13 8 -1.3145E-09 2.9566E-13 2.5849E-13 -2.5330E-15 9 1.5662E-09 2.8371E-11 -6.9166E-13 5.3323E-15 13 7.4452E-08 -2.0320E-09 2.9682E-11 -1.7901E-13 14 6.0850E-08 -7.9802E-10 6.2524E-12 -2.1961E-14

[0293] Table 14

[0294] Example 8

[0295] like Figure 8 As shown, an optical lens of Example 8 of this application is described. Figure 8 A schematic diagram of the optical lens structure of Example 8 is shown.

[0296] like Figure 8 As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, sixth lens L6, seventh lens L7, filter L8, first side surface of protective glass S17, second side surface of protective glass S18, and imaging surface IMA.

[0297] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has positive optical power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 has positive optical power, its first side surface S6 is concave, and its second side surface S7 is convex. The fourth lens L4 has positive optical power, its first side surface S8 is convex, and its second side surface S9 is concave. The fifth lens L5 has negative optical power, its first side surface S10 is convex, and its second side surface S11 is concave. The sixth lens L6 has positive optical power, its first side surface S11 is convex, and its second side surface S12 is convex. The seventh lens L7 has positive optical power, its first side surface S13 is convex, and its second side surface S14 is convex. The filter L8 has a first side surface S15 and a second side surface S16. Light from the first side passes sequentially through surfaces S11 to S18 and is finally imaged onto the imaging plane IMA. Since the fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens, S11 is both the second side surface of the fifth lens and the first side surface of the sixth lens. The first side surface S13 of the seventh lens is a curved surface.

[0298] In this example, the total effective focal length F of the optical lens is 9.370mm, the maximum field of view (FOV) of the optical lens is 110°, and the total length (TTL) of the optical lens is 43.134mm.

[0299] Table 15 shows the basic structural parameters of the optical lens of Example 8, where the units for radius of curvature (Radius) and thickness (Thickness / Distance) are millimeters (mm).

[0300]

[0301]

[0302] Table 15

[0303] Table 16 below shows the conic coefficient k and the coefficients A, B, C, D, E, F, and G of each higher-order term that can be used for the aspherical lens surfaces S1, S2, S6, S7, S8, S9, S13, and S14 in Example 8.

[0304] Higher order terms / 4 6 8 Surf K A B C 1 -0.2488 -4.6113E-04 -8.1374E-06 -2.4796E-07 2 -0.3695 -1.6145E-03 -6.6353E-05 1.6018E-06 6 -27.2840 -4.6895E-04 -4.3188E-06 5.4017E-07 7 11.2010 -4.5725E-04 1.0943E-05 -2.6514E-07 8 -7.1869 3.0965E-04 -7.1314E-06 1.7310E-07 9 44.2890 1.8717E-04 -3.9377E-06 -1.8580E-08 13 -99.0000 1.2052E-04 1.6597E-05 -1.6420E-06 14 99.0000 -1.7745E-03 8.8811E-05 -2.9632E-06 Higher order terms 10 12 14 16 Surf D E F G 1 1.4511E-08 -3.0055E-10 3.1507E-12 -1.4664E-14 2 7.3585E-08 -8.4466E-09 2.7170E-10 -3.4010E-12 6 -6.8615E-08 3.9204E-09 -9.6886E-11 7.0075E-13 7 4.1027E-09 3.9232E-10 -1.8695E-11 2.7898E-13 8 -1.3145E-09 2.9566E-13 2.5849E-13 -2.5330E-15 9 1.5662E-09 2.8371E-11 -6.9166E-13 5.3323E-15 13 7.4452E-08 -2.0320E-09 2.9682E-11 -1.7901E-13 14 6.0850E-08 -7.9802E-10 6.2524E-12 -2.1961E-14

[0305] Table 16

[0306] Example 9

[0307] like Figure 9 As shown, an optical lens of Example Nine of this application is described. Figure 9 A schematic diagram of the optical lens structure of Example 9 is shown.

[0308] like Figure 9 As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, sixth lens L6, seventh lens L7, filter L8, first side surface of protective glass S17, second side surface of protective glass S18, and imaging surface IMA.

[0309] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has positive optical power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 has positive optical power, its first side surface S6 is concave, and its second side surface S7 is convex. The fourth lens L4 has positive optical power, its first side surface S8 is convex, and its second side surface S9 is convex. The fifth lens L5 has positive optical power, its first side surface S10 is convex, and its second side surface S11 is convex. The sixth lens L6 has negative optical power, its first side surface S11 is concave, and its second side surface S12 is convex. The seventh lens L7 has positive optical power, its first side surface S13 is convex, and its second side surface S14 is convex. The filter L8 has a first side surface S15 and a second side surface S16. Light from the first side passes sequentially through surfaces S11 to S18 and is finally imaged onto the imaging plane IMA. Since the fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens, S11 is both the second side surface of the fifth lens and the first side surface of the sixth lens. The first side surface S13 of the seventh lens is a curved surface.

[0310] In this example, the total effective focal length F of the optical lens is 9.255mm, the maximum field of view (FOV) of the optical lens is 120°, and the total length (TTL) of the optical lens is 42.007mm.

[0311] Table 17 shows the basic structural parameters of the optical lens of Example 9, where the units for radius of curvature and thickness / distance are millimeters (mm).

[0312] Surf Radius Thickness Nd Vd 1 7.422 3.887 1.81 41.00 2 4.411 4.047 3 -9.532 6.587 1.80 46.57 4 -11.641 -0.300 STO Infinity 0.427 6 -46.306 3.843 1.81 41.00 7 -22.927 2.346 8 29.297 5.320 1.62 63.41 9 -14.689 0.100 10 17.300 5.102 1.57 71.31 11 -9.200 1.508 1.92 20.88 12 -160.000 1.353 13 72.959 4.869 1.69 31.08 14 -250.000 0.319 15 Infinity 0.500 1.52 64.21 16 Infinity 1.511 17 Infinity 0.500 1.52 64.21 18 Infinity 0.088 IMA / /

[0313] Table 17

[0314] Table 18 below shows the conic coefficient k and the coefficients A, B, C, D, E, F, and G of the aspherical lens surfaces S1, S2, S6, S7, S8, S9, S13, and S14 that can be used in Example 9.

[0315]

[0316]

[0317] Table 18

[0318] Example 10

[0319] like Figure 10 As shown, an optical lens of Example 10 of this application is described. Figure 10A schematic diagram of the optical lens structure of Example 10 is shown.

[0320] like Figure 10 As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, sixth lens L6, seventh lens L7, filter L8, first side surface of protective glass S17, second side surface of protective glass S18, and imaging surface IMA.

[0321] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has positive optical power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 has positive optical power, its first side surface S6 is concave, and its second side surface S7 is convex. The fourth lens L4 has positive optical power, its first side surface S8 is convex, and its second side surface S9 is convex. The fifth lens L5 has positive optical power, its first side surface S10 is convex, and its second side surface S11 is convex. The sixth lens L6 has negative optical power, its first side surface S11 is concave, and its second side surface S12 is convex. The seventh lens L7 has positive optical power, its first side surface S13 is convex, and its second side surface S14 is convex. The filter L8 has a first side surface S15 and a second side surface S16. Light from the first side passes sequentially through surfaces S11 to S18 and is finally imaged onto the imaging plane IMA. Since the fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens, S11 is both the second side surface of the fifth lens and the first side surface of the sixth lens. The first side surface S13 of the seventh lens is a curved surface.

[0322] In this example, the total effective focal length F of the optical lens is 9.215mm, the maximum field of view (FOV) of the optical lens is 120°, and the total length (TTL) of the optical lens is 41.983mm.

[0323] Table 19 shows the basic structural parameters of the optical lens of Example 10, where the units for radius of curvature and thickness / distance are millimeters (mm).

[0324]

[0325]

[0326] Table 19

[0327] Table 20 below shows the conic coefficient k and the coefficients A, B, C, D, E, F, and G of each higher-order term that can be used for the aspherical lens surfaces S1, S2, S6, S7, S8, S9, S13, and S14 in Example 10.

[0328] Higher order terms / 4 6 8 Surf K A B C 1 -0.2464 -4.7172E-04 -9.8420E-06 -2.7231E-07 2 -0.4413 -1.6876E-03 -7.9871E-05 1.9610E-06 6 99.4290 -6.0955E-04 -1.6936E-05 1.5243E-06 7 13.0180 -5.0596E-04 2.8630E-06 -8.8818E-09 8 -55.2780 1.1166E-04 -6.4502E-06 1.7414E-07 9 -1.0781 2.6355E-05 -1.4062E-06 -4.5400E-08 13 -26.7280 1.8928E-04 1.4447E-05 -1.5721E-06 14 -99.0000 -1.7619E-03 9.0545E-05 -3.0006E-06 Higher order terms 10 12 14 16 Surf D E F G 1 1.4681E-08 -2.9374E-10 3.0760E-12 -1.5185E-14 2 6.7355E-08 -8.2903E-09 2.7181E-10 -3.5768E-12 6 -9.8067E-08 3.3939E-09 -9.7391E-11 4.1366E-12 7 2.9056E-09 2.2505E-10 -1.7264E-11 3.8496E-13 8 -1.4799E-09 -3.9611E-12 3.1310E-13 -2.2442E-15 9 5.1418E-10 2.8196E-11 -7.2604E-13 6.0220E-15 13 7.4634E-08 -2.0414E-09 2.9871E-11 -1.8219E-13 14 6.1274E-08 -7.8600E-10 5.9415E-12 -2.2064E-14

[0329] Table 20 summarizes that Examples 1 through 25 respectively satisfy the relationships shown in Table 21.

[0330]

[0331]

[0332] Table 21

[0333] Table 22 gives the effective focal length F of the optical lenses in Examples 1 to 10, and the effective focal lengths of each lens from F1 to F7, etc. (unit: mm).

[0334]

[0335]

[0336] Table 22

[0337] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0338] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0339] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0340] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An optical lens, characterized in that, From the first side to the second side, the following are included in sequence: A first lens having negative optical power, a first side surface of the first lens being convex, and a second side surface of the first lens being concave; The second lens has optical power, the first side of the second lens is concave, and the second side of the second lens is convex; The third lens has positive optical power, the first side of the third lens is concave, and the second side of the third lens is convex; The fourth lens has positive optical power, and at least one of the first side surface and the second side surface of the fourth lens is a convex surface; The fifth lens has optical power; The sixth lens has optical power, and at least one of the first side surface and the second side surface of the sixth lens is a convex surface; The seventh lens has positive optical power, and its first side surface is convex, and its second side surface is convex. The optical lens has a total of seven lenses with optical power; the fifth lens and the sixth lens are cemented together to form a cemented lens; The maximum field of view (FOV) of the optical lens, the total focal length (F) of the optical lens, and the image height (H) corresponding to the maximum field of view of the optical lens satisfy the following: 85 ≤ (FOV × F) / H ≤ 106.787; the focal length (F4) of the fourth lens and the total focal length (F) of the optical lens satisfy the following: 1.478 ≤ F4 / F ≤ 2.

018.

2. The optical lens according to claim 1, characterized in that, The optical power of the second lens is positive.

3. The optical lens according to claim 1, characterized in that, The optical power of the second lens is negative.

4. The optical lens according to claim 1, characterized in that, The first side surface of the fourth lens is convex, and the second side surface of the fourth lens is convex.

5. The optical lens according to claim 1, characterized in that, The first side surface of the fourth lens is convex, and the second side surface of the fourth lens is concave.

6. The optical lens according to claim 1, characterized in that, The fifth lens has negative optical power, the first side of the fifth lens is convex, and the second side of the fifth lens is concave.

7. The optical lens according to claim 1, characterized in that, The fifth lens has negative optical power, and the first side surface of the fifth lens is concave, and the second side surface of the fifth lens is concave.

8. The optical lens according to claim 1, characterized in that, The fifth lens has positive optical power, and the first side surface of the fifth lens is convex, and the second side surface of the fifth lens is convex.

9. The optical lens according to claim 1, characterized in that, The sixth lens has positive optical power, and the first side surface of the sixth lens is convex, and the second side surface of the sixth lens is convex.

10. The optical lens according to claim 1, characterized in that, The sixth lens has positive optical power, the first side of the sixth lens is convex, and the second side of the sixth lens is concave.

11. The optical lens according to claim 1, characterized in that, The sixth lens has negative optical power, the first side of the sixth lens is concave, and the second side of the sixth lens is convex.

12. The optical lens according to claim 1, characterized in that, The optical lens also includes an aperture stop, which is disposed between the second lens and the third lens.

13. The optical lens according to claim 1, characterized in that, At least two of the first lens, the third lens, the fourth lens, and the seventh lens are aspherical lenses.

14. The optical lens according to claim 1, characterized in that, The first side surface of the seventh lens is a curved surface.

15. The optical lens according to any one of claims 1 to 14, characterized in that, The total focal length F of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: 0.886≤F / H≤0.

912.

16. The optical lens according to any one of claims 1 to 14, characterized in that, The focal length F1 of the first lens and the combined focal length F12 of the first lens and the second lens satisfy the following condition: 0.439≤|F1 / F12|≤0.

925.

17. The optical lens according to any one of claims 1 to 14, characterized in that, The maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view FOV of the optical lens satisfy the following condition: 0.013≤D / H / FOV≤0.

05.

18. The optical lens according to any one of claims 1 to 14, characterized in that, The maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the following condition: 0.723≤D / H / θ≤0.

770.

19. The optical lens according to any one of claims 1 to 14, characterized in that, The combined focal length F12 of the first lens and the second lens satisfies the following relationship with the total focal length F of the optical lens: -6.448≤F12 / F≤-3.

225.

20. The optical lens according to any one of claims 1 to 14, characterized in that, The central radius of curvature R3 of the first side surface of the second lens, the central radius of curvature R4 of the second side surface of the second lens, and the central thickness d3 of the second lens satisfy the following condition: 1.370≤R3 / (R4+d3)≤2.

396.

21. The optical lens according to any one of claims 1 to 14, characterized in that, The maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the maximum field of view FOV of the optical lens satisfy the following condition: 0.014≤D / F / FOV≤0.

015.

22. The optical lens according to any one of claims 1 to 14, characterized in that, The maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the following condition: 0.812≤D / F / θ≤0.

864.

23. The optical lens according to any one of claims 1 to 14, characterized in that, The total optical length of the optical lens, i.e., the distance TTL from the center of the first side surface of the first lens of the optical lens to the center of the imaging surface of the optical lens, satisfies the following condition with respect to the maximum field of view (FOV) of the optical lens: 0.700≤2*TTL / FOV≤0.

787.

24. The optical lens according to any one of claims 1 to 14, characterized in that, The central radius of curvature R14 of the second side of the seventh lens and the central thickness d13 of the seventh lens satisfy the following condition: -51.349≤R14 / d13≤-15.

540.

25. The optical lens according to any one of claims 1 to 14, characterized in that, The combined focal length F34 of the third lens and the fourth lens satisfies the following relationship with the total focal length F of the optical lens: 0.917≤F34 / F≤1.

417.

26. The optical lens according to any one of claims 1 to 14, characterized in that, The focal length F3 of the third lens satisfies the following relationship with the total focal length F of the optical lens: 1.779≤F3 / F≤5.

636.

27. The optical lens according to any one of claims 1 to 14, characterized in that, The maximum field of view (FOV) of the optical lens, the total focal length (F) of the optical lens, and the image height (H) corresponding to the maximum field of view of the optical lens satisfy the following condition: 97.419 ≤ (FOV × F) / H ≤ 106.

787.

28. The optical lens according to any one of claims 1 to 14, characterized in that, The image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the following condition: 0.324≤(H / 2) / (F*tan(θ / 2))≤0.

395.

29. The optical lens according to any one of claims 1 to 14, characterized in that, The image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the maximum field of view FOV of the optical lens satisfy the following condition: 1.009≤|(F*FOV) / (HF*FOV)|≤1.

010.

30. The optical lens according to any one of claims 1 to 14, characterized in that, The image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the following condition: 2.158≤|(F*θ) / (HF*θ)|≤2.

428.

31. The optical lens according to any one of claims 1 to 14, characterized in that, The central curvature radius R1 of the first side surface of the first lens satisfies the following relationship with the total focal length F of the optical lens: 0.750≤R1 / F≤0.

816.

32. The optical lens according to any one of claims 1 to 14, characterized in that, The central radius of curvature R1 of the first side surface of the first lens and the focal length F1 of the first lens satisfy the following condition: -0.296≤R1 / F1≤-0.

234.

33. The optical lens according to any one of claims 1 to 14, characterized in that, The effective aperture diameter DST of the optical lens and the total focal length F of the optical lens satisfy the following condition: 0.798≤DST / F≤0.

868.

34. The optical lens according to any one of claims 1 to 14, characterized in that, The total focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy the following condition: 1.600≤F / ENPD≤1.

8.

35. The optical lens according to any one of claims 1 to 14, characterized in that, The center thickness d10 of the fifth lens, the center thickness d11 of the sixth lens, the air gap d12 between the sixth lens and the seventh lens, the center thickness d13 of the seventh lens, and the total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens of the optical lens to the center of the imaging plane of the optical lens, satisfy the following: 0.265≤(d10+d11+d12+d13) / TTL≤0.

306.

36. The optical lens according to any one of claims 1 to 14, characterized in that, The radius of curvature R6 of the first side surface of the third lens and the radius of curvature R7 of the second side surface of the third lens satisfy the following condition: 2.020≤R6 / R7≤5.

790.

37. An optical lens, characterized in that, From the first side to the second side, the following are included in sequence: A first lens, the first lens having negative optical power; A second lens, the second lens having optical power; A third lens, wherein the third lens has positive optical power; A fourth lens, wherein the fourth lens has positive optical power; The fifth lens has optical power; A sixth lens, wherein the sixth lens has optical power; The seventh lens has positive optical power; The fifth lens and the sixth lens are cemented together to form a cemented lens; the focal length F4 of the fourth lens and the total focal length F of the optical lens satisfy the following condition: 1.478≤F4 / F≤2.018; the central radius of curvature R1 of the first side of the first lens and the total focal length F of the optical lens satisfy the following condition: 0.750≤R1 / F≤0.816; the total number of lenses with optical power in the optical lens is seven; the maximum field of view FOV of the optical lens, the total focal length F of the optical lens, and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: 85≤(FOV×F) / H≤106.

787.

38. The optical lens according to claim 37, characterized in that, The first side surface of the first lens is convex, and the second side surface of the first lens is concave.

39. The optical lens according to claim 37, characterized in that, The optical power of the second lens is positive or negative, the first side surface of the second lens is concave, and the second side surface of the second lens is convex.

40. The optical lens according to claim 37, characterized in that, The first side surface of the third lens is concave, and the second side surface of the third lens is convex.

41. The optical lens according to claim 37, characterized in that, The first side surface of the fourth lens is convex, and the second side surface of the fourth lens is convex.

42. The optical lens according to claim 37, characterized in that, The first side surface of the fourth lens is convex, and the second side surface of the fourth lens is concave.

43. The optical lens according to claim 37, characterized in that, The fifth lens has negative optical power, the first side of the fifth lens is convex, and the second side of the fifth lens is concave.

44. The optical lens according to claim 37, characterized in that, The fifth lens has negative optical power, and the first side surface of the fifth lens is concave, and the second side surface of the fifth lens is concave.

45. The optical lens according to claim 37, characterized in that, The fifth lens has positive optical power, and the first side surface of the fifth lens is convex, and the second side surface of the fifth lens is convex.

46. ​​The optical lens according to claim 37, characterized in that, The sixth lens has positive optical power, and the first side surface of the sixth lens is convex, and the second side surface of the sixth lens is convex.

47. The optical lens according to claim 37, characterized in that, The sixth lens has positive optical power, the first side of the sixth lens is convex, and the second side of the sixth lens is concave.

48. The optical lens according to claim 37, characterized in that, The sixth lens has negative optical power, the first side of the sixth lens is concave, and the second side of the sixth lens is convex.

49. The optical lens according to claim 37, characterized in that, The first side surface of the seventh lens is convex, and the second side surface of the seventh lens is convex.

50. The optical lens according to claim 37, characterized in that, The optical lens also includes an aperture stop, which is disposed between the second lens and the third lens.

51. The optical lens according to claim 37, characterized in that, At least two of the first lens, the third lens, the fourth lens, and the seventh lens are aspherical lenses.

52. The optical lens according to claim 37, characterized in that, The first side surface of the seventh lens is a curved surface.

53. The optical lens according to any one of claims 37 to 52, characterized in that, The total focal length F of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: 0.886≤F / H≤0.

912.

54. The optical lens according to any one of claims 37 to 52, characterized in that, The focal length F1 of the first lens and the combined focal length F12 of the first lens and the second lens satisfy the following condition: 0.439≤|F1 / F12|≤0.

925.

55. The optical lens according to any one of claims 37 to 52, characterized in that, The maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view FOV of the optical lens satisfy the following condition: 0.013≤D / H / FOV≤0.

05.

56. The optical lens according to any one of claims 37 to 52, characterized in that, The maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the following condition: 0.723≤D / H / θ≤0.

770.

57. The optical lens according to any one of claims 37 to 52, characterized in that, The combined focal length F12 of the first lens and the second lens satisfies the following relationship with the total focal length F of the optical lens: -6.448≤F12 / F≤-3.

225.

58. The optical lens according to any one of claims 37 to 52, characterized in that, The central radius of curvature R3 of the first side surface of the second lens, the central radius of curvature R4 of the second side surface of the second lens, and the central thickness d3 of the second lens satisfy the following condition: 1.370≤R3 / (R4+d3)≤2.

396.

59. The optical lens according to any one of claims 37 to 52, characterized in that, The maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the maximum field of view FOV of the optical lens satisfy the following condition: 0.014≤D / F / FOV≤0.

015.

60. The optical lens according to any one of claims 37 to 52, characterized in that, The maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the following condition: 0.812≤D / F / θ≤0.

864.

61. The optical lens according to any one of claims 37 to 52, characterized in that, The total optical length of the optical lens, i.e., the distance TTL from the center of the first side surface of the first lens of the optical lens to the center of the imaging surface of the optical lens, satisfies the following condition with respect to the maximum field of view (FOV) of the optical lens: 0.700≤2*TTL / FOV≤0.

787.

62. The optical lens according to any one of claims 37 to 52, characterized in that, The central radius of curvature R14 of the second side of the seventh lens and the central thickness d13 of the seventh lens satisfy the following condition: -51.349≤R14 / d13≤-15.

540.

63. The optical lens according to any one of claims 37 to 52, characterized in that, The combined focal length F34 of the third lens and the fourth lens satisfies the following relationship with the total focal length F of the optical lens: 0.917≤F34 / F≤1.

417.

64. The optical lens according to any one of claims 37 to 52, characterized in that, The focal length F3 of the third lens satisfies the following relationship with the total focal length F of the optical lens: 1.779≤F3 / F≤5.

636.

65. The optical lens according to any one of claims 37 to 52, characterized in that, The maximum field of view (FOV) of the optical lens, the total focal length (F) of the optical lens, and the image height (H) corresponding to the maximum field of view of the optical lens satisfy the following condition: 97.419 ≤ (FOV × F) / H ≤ 106.

787.

66. The optical lens according to any one of claims 37 to 52, characterized in that, The image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the following condition: 0.324≤(H / 2) / (F*tan(θ / 2))≤0.

395.

67. The optical lens according to any one of claims 37 to 52, characterized in that, The image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the maximum field of view FOV of the optical lens satisfy the following condition: 1.009≤|(F*FOV) / (HF*FOV)|≤1.

010.

68. The optical lens according to any one of claims 37 to 52, characterized in that, The image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the following condition: 2.158≤|(F*θ) / (HF*θ)|≤2.428.

Images