Optical lenses and electronic devices

Abstract

This invention provides an optical lens and an electronic device. The optical lens, from a first side to a second side, sequentially includes: a first lens with negative optical power, wherein the first side of the first lens is convex and the second side is concave; a second lens with negative optical power, wherein the first side of the second lens is convex and the second side is concave; a third lens with positive optical power, wherein the second side of the third lens is convex; a fourth lens with positive optical power, wherein the first side of the fourth lens is concave and the second side is convex; a fifth lens with positive optical power, wherein the second side of the fifth lens is convex; and a sixth lens with positive optical power, wherein the first side of the sixth lens is convex. This invention solves the problems of miniaturization, small front aperture, low distortion, and large field of view that are difficult to simultaneously achieve in existing optical lenses.

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] In recent years, with the development of technology, the demand for optical lenses in daily life has been increasing, and optical lenses are being applied to more and more scenarios. For example, in the automotive industry, for driving safety, more accurate detection of the driving environment is required, and optical lenses have become key components for detecting information around the vehicle. In automotive autonomous driving assistance systems, LiDAR lenses are key components for detecting information around the vehicle. For driving safety and more accurate detection of the driving environment, the number of LiDAR lenses used in automobiles is gradually increasing, and LiDAR lenses are trending towards miniaturization.

[0003] For optical lenses used in certain specialized applications, the number of lenses is often increased to improve image quality, leading to a larger size and weight, which hinders miniaturization. For wide-field-of-view lidar lenses used for short-range detection, the front aperture is typically large, resulting in a larger distance between the optical axes of the transmitting and receiving lenses, and a larger overall module size, making installation in the confined space of a vehicle difficult. Furthermore, wide-field-of-view optical lenses often exhibit significant distortion, leading to poor image quality at the edges of the field of view and lower detection accuracy.

[0004] In other words, existing optical lenses suffer from the problem of simultaneously achieving miniaturization, small front aperture, low distortion, and a large field of view. Summary of the Invention

[0005] The main objective of this invention is to provide an optical lens and an electronic device to solve the problems of miniaturization, small front diameter, small distortion and large field of view that are difficult to achieve simultaneously in existing optical lenses.

[0006] To achieve the above objectives, the present invention provides an optical lens comprising, from a first side to a second side, the following: a first lens having negative optical power, wherein a first side surface of the first lens is convex and a second side surface is concave; a second lens having negative optical power, wherein a first side surface of the second lens is convex and a second side surface is concave; a third lens having positive optical power, wherein a second side surface of the third lens is convex; a fourth lens having positive optical power, wherein a first side surface of the fourth lens is concave and a second side surface is convex; a fifth lens having positive optical power, wherein a second side surface of the fifth lens is convex; and a sixth lens having positive optical power, wherein a first side surface of the sixth lens is convex.

[0007] Furthermore, the first side surface of the third lens is convex.

[0008] Furthermore, the first side surface of the third lens is concave.

[0009] Furthermore, the first side surface of the fifth lens is concave.

[0010] Furthermore, the first side surface of the fifth lens is convex.

[0011] Furthermore, the second side surface of the sixth lens is concave.

[0012] Furthermore, the second side surface of the sixth lens is convex.

[0013] Furthermore, the optical lens also includes an aperture stop, which is positioned between the second lens and the third lens.

[0014] Furthermore, both the second and fourth lenses are aspherical lenses.

[0015] Furthermore, the total focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy the following condition: F / ENPD≤1.8.

[0016] Furthermore, the total optical length of the optical lens, that is, 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 total focal length F of the optical lens: TTL / F≤13.

[0017] 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, 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: TTL / H / FOV≤0.05.

[0018] Furthermore, the optical back focal length of the optical lens, i.e., the distance from the center of the second side of the last lens of the optical lens to the center of the imaging plane, BFL, satisfies the following condition with respect to the optical total length of the optical lens, i.e., the distance 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: BFL / TTL≥0.06.

[0019] Furthermore, the optical back focal length of the optical lens, i.e., the distance BFL from the center of the second side of the last lens of the optical lens to the center of the imaging plane, and the lens group length of the optical lens, i.e., the distance TL from the center of the first side of the first lens of the optical lens to the center of the second side of the last lens of the optical lens, satisfy the following condition: BFL / TL≥0.08.

[0020] 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 condition: D / H / FOV≤0.02.

[0021] 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: D / H / θ≤0.8.

[0022] 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 total focal length F of the optical lens satisfy the following condition: D / H / F≤0.5.

[0023] Furthermore, the total focal length F of the optical lens, the radian value θ of the maximum field of view of the optical lens, and the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens satisfy the following relationship: (F*θ) / D≥0.3.

[0024] 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: (FOV*F) / H≤60.

[0025] 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≤0.8.

[0026] Furthermore, the focal length F1 of the first lens and the total focal length F of the optical lens satisfy the following condition: F1 / F≤-0.1.

[0027] Furthermore, the focal length F2 of the second lens satisfies the following relationship with the total focal length F of the optical lens: F2 / F≤-0.1.

[0028] Furthermore, the focal length F3 of the third lens satisfies the following relationship with the total focal length F of the optical lens: F3 / F≥0.1.

[0029] Furthermore, the focal length F4 of the fourth lens satisfies the following relationship with the total focal length F of the optical lens: F4 / F≥0.1.

[0030] Furthermore, the focal length F5 of the fifth lens satisfies the following relationship with the total focal length F of the optical lens: F5 / F≥0.1.

[0031] Furthermore, the focal length F6 of the sixth lens satisfies the following relationship with the total focal length F of the optical lens: F6 / F≥0.1.

[0032] Furthermore, the radius of curvature R3 of the first side surface of the second lens and the total optical length of the optical lens, that is, 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, satisfy the following condition: R3 / TTL≥0.1.

[0033] Furthermore, the radius of curvature R7 of the second side surface of the third lens and the total optical length of the optical lens, that is, 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, satisfy the following condition: R7 / TTL≤-0.1.

[0034] Furthermore, the radius of curvature R8 of the first side surface of the fourth lens and the total optical length of the optical lens, that is, 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, satisfy the following condition: R8 / TTL≤-0.1.

[0035] Furthermore, the distance T34 between the third and fourth lenses on the optical axis satisfies the following relationship with the total focal length F of the optical lens: T34 / F≥0.8.

[0036] Furthermore, the distance T56 between the fifth and sixth lenses on the optical axis satisfies the following condition with respect to the total focal length F of the optical lens: T56 / F≤0.5.

[0037] Furthermore, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens and the aperture D13 of the second side of the sixth lens of the optical lens satisfy the following condition: 0.8≤D / D13≤1.2.

[0038] Furthermore, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: D / H≤1.4.

[0039] Furthermore, the light-transmitting aperture D13 of the second side of the sixth lens of the optical lens, the optical back focal length of the optical lens (i.e., the distance BFL from the center of the second side of the last lens of the optical lens to the center of the imaging plane), and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: D13*BFL / H≥4.

[0040] 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: |(H / 2-F*tan(FOV / 2)) / (F*tan(FOV / 2))|≤0.6.

[0041] Furthermore, the maximum effective aperture D1 of the first side of the first lens and the aperture number FNO of the optical lens satisfy the following relationship: D1 / FNO≥5.

[0042] According to another aspect of the present invention, an optical lens is provided, comprising, from a first side to a second side, the following in sequence: a first lens having negative optical power; a second lens having negative optical power; a third lens having positive optical power; a fourth lens having positive optical power; a fifth lens having positive optical power; and a sixth lens having positive optical power; wherein the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens satisfies the following relationship with the image height H corresponding to the maximum field of view of the optical lens: D / H≤1.4.

[0043] Furthermore, the first side surface of the first lens is convex, and the second side surface is concave.

[0044] Furthermore, the first side surface of the second lens is convex, and the second side surface is concave.

[0045] Furthermore, the first side surface of the third lens is convex, and the second side surface is convex.

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

[0047] Furthermore, the first side of the fourth lens is concave, and the second side is convex.

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

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

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

[0051] Furthermore, the first side surface of the sixth lens is convex, and the second side surface is convex.

[0052] Furthermore, the optical lens also includes an aperture stop, which is positioned between the second lens and the third lens.

[0053] Furthermore, both the second and fourth lenses are aspherical lenses.

[0054] Furthermore, the total focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy the following condition: F / ENPD≤1.8.

[0055] Furthermore, the total optical length of the optical lens, that is, 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 total focal length F of the optical lens: TTL / F≤13.

[0056] 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, 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: TTL / H / FOV≤0.05.

[0057] Furthermore, the optical back focal length of the optical lens, i.e., the distance from the center of the second side of the last lens of the optical lens to the center of the imaging plane, BFL, satisfies the following condition with respect to the optical total length of the optical lens, i.e., the distance 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: BFL / TTL≥0.06.

[0058] Furthermore, the optical back focal length of the optical lens, i.e., the distance BFL from the center of the second side of the last lens of the optical lens to the center of the imaging plane, and the lens group length of the optical lens, i.e., the distance TL from the center of the first side of the first lens of the optical lens to the center of the second side of the last lens of the optical lens, satisfy the following condition: BFL / TL≥0.08.

[0059] 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 condition: D / H / FOV≤0.02.

[0060] 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: D / H / θ≤0.8.

[0061] 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 total focal length F of the optical lens satisfy the following condition: D / H / F≤0.5.

[0062] Furthermore, the total focal length F of the optical lens, the radian value θ of the maximum field of view of the optical lens, and the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens satisfy the following relationship: (F*θ) / D≥0.3.

[0063] 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: (FOV*F) / H≤60.

[0064] 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≤0.8.

[0065] Furthermore, the focal length F1 of the first lens and the total focal length F of the optical lens satisfy the following condition: F1 / F≤-0.1.

[0066] Furthermore, the focal length F2 of the second lens satisfies the following relationship with the total focal length F of the optical lens: F2 / F≤-0.1.

[0067] Furthermore, the focal length F3 of the third lens satisfies the following relationship with the total focal length F of the optical lens: F3 / F≥0.1.

[0068] Furthermore, the focal length F4 of the fourth lens satisfies the following relationship with the total focal length F of the optical lens: F4 / F≥0.1.

[0069] Furthermore, the focal length F5 of the fifth lens satisfies the following relationship with the total focal length F of the optical lens: F5 / F≥0.1.

[0070] Furthermore, the focal length F6 of the sixth lens satisfies the following relationship with the total focal length F of the optical lens: F6 / F≥0.1.

[0071] Furthermore, the radius of curvature R3 of the first side surface of the second lens and the total optical length of the optical lens, that is, 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, satisfy the following condition: R3 / TTL≥0.1.

[0072] Furthermore, the radius of curvature R7 of the second side surface of the third lens and the total optical length of the optical lens, that is, 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, satisfy the following condition: R7 / TTL≤-0.1.

[0073] Furthermore, the radius of curvature R8 of the first side surface of the fourth lens and the total optical length of the optical lens, that is, 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, satisfy the following condition: R8 / TTL≤-0.1.

[0074] Furthermore, the distance T34 between the third and fourth lenses on the optical axis satisfies the following relationship with the total focal length F of the optical lens: T34 / F≥0.8.

[0075] Furthermore, the distance T56 between the fifth and sixth lenses on the optical axis satisfies the following condition with respect to the total focal length F of the optical lens: T56 / F≤0.5.

[0076] Furthermore, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens and the aperture D13 of the second side of the sixth lens of the optical lens satisfy the following condition: 0.8≤D / D13≤1.2.

[0077] Furthermore, the light-transmitting aperture D13 of the second side of the sixth lens of the optical lens, the optical back focal length of the optical lens (i.e., the distance BFL from the center of the second side of the last lens of the optical lens to the center of the imaging plane), and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: D13*BFL / H≥4.

[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 maximum field of view FOV of the optical lens satisfy the following relationship: |(H / 2-F*tan(FOV / 2)) / (F*tan(FOV / 2))|≤0.6.

[0079] Furthermore, the maximum effective aperture D1 of the first side of the first lens and the aperture number FNO of the optical lens satisfy the following relationship: D1 / FNO≥5.

[0080] 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.

[0081] According to the technical solution of the present invention, the optical lens includes, from the first side to the second side, a first lens with negative optical power, a second lens with negative optical power, a third lens with positive optical power, a fourth lens with positive optical power, a fifth lens with positive optical power, and a sixth lens with positive optical power. The first side of the first lens is convex and the second side is concave; the first side of the second lens is convex and the second side is concave; the second side of the third lens is convex; the first side of the fourth lens is concave and the second side is convex; the second side of the fifth lens is convex; and the first side of the sixth lens is convex.

[0082] The first lens has negative optical power. Its first side is convex, and its second side is concave. This negative optical power lens diverges light. The convex shape of the first lens results in a smaller angle of incidence, which helps collect more light from a wide field of view into the subsequent optical system, increasing luminous flux. The concave second side of the first lens controls the direction of large-angle light rays at the lens edge, and the light emitted from the second side provides a larger light-receiving surface for the subsequent optical system.

[0083] The second lens has negative optical power, with a convex first side and a concave second side. Preferably, the second lens is an aspherical lens with negative optical power, and its shape convex towards the first side. This allows it to collect light from the front end and appropriately diffuse it into the rear optical system, resulting in a smooth transition of light path. Aspherical surfaces are beneficial for improving resolution and compressing distortion.

[0084] The third lens has positive optical power. Its second side is convex, while its first side can be either convex or concave. When the first side is convex, the third lens is biconvex, which helps compress the light collected at the front end, reducing the aperture of the subsequent lenses. When the first side is concave, combined with positive optical power, it helps converge the light from the front end. The third lens is meniscus-shaped, ensuring that the light rays exiting the third lens maintain an upward trajectory, further smoothing the transition of light paths.

[0085] The fourth lens has positive optical power. Its first side is concave, and its second side is convex. The positive optical power of the fourth lens allows it to converge the incoming light, ensuring a smooth transition of light rays and reducing the aperture of subsequent lenses. The fourth lens is preferably an aspherical lens, as aspherical surfaces effectively correct aberrations and improve the resolving power of the optical system. Because the first side of the fourth lens is concave and the second side is convex, the light rays exiting the fourth lens maintain an upward trajectory. Under the same field of view, the light rays exiting from the second side of the fourth lens provide a larger light-receiving surface for the subsequent optical system. This benefits both the enlargement of the imaging plane and the aperture, while also allowing for greater light intake and increased brightness of the imaging plane.

[0086] The fifth lens has positive optical power. Its second side is convex, while its first side can be either convex or concave. When the first side is concave, combined with positive optical power, it helps to converge light rays. The fifth lens is meniscus-shaped and convex towards the second side, allowing light to be smoothly transmitted to the rear. When the first side is convex, combined with positive optical power, it also helps to converge light rays. The fifth lens is biconvex, allowing for a smooth transition in the light path.

[0087] The sixth lens has positive optical power. Its first side surface is convex, while its second side surface can be either convex or concave. When the second side surface is concave, it has positive optical power, a meniscus shape, and is convex towards the first side, which helps the light rays entering from the first side to converge smoothly onto the imaging plane. The convex first side surface helps deflect the light rays, reducing the angle at which the light rays strike the imaging plane. When the second side surface is convex, it has positive optical power and a biconvex shape, which helps compress the light rays collected at the front end, causing the light rays to deflect towards the optical axis, thus reducing the angle at which the light rays strike the imaging plane.

[0088] This application employs six lenses. By optimizing the optical power and surface shape of each lens, the optical lens of this invention has at least one beneficial effect, such as low distortion, large field of view, small front aperture, large image height, and miniaturization. Attached Figure Description

[0089] 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:

[0090] Figure 1 A schematic diagram of the structure of an optical lens of Example 1 of the present invention is shown;

[0091] Figure 2 A schematic diagram of the structure of the optical lens of Example 2 of the present invention is shown;

[0092] Figure 3 A schematic diagram of the structure of the optical lens of Example 3 of the present invention is shown;

[0093] Figure 4 A schematic diagram of the structure of the optical lens of Example 4 of the present invention is shown;

[0094] Figure 5 A schematic diagram of the structure of the optical lens of Example 5 of the present invention is shown;

[0095] Figure 6 A schematic diagram of the structure of the optical lens of Example Six of the present invention is shown;

[0096] Figure 7 A schematic diagram of the structure of the optical lens of Example Seven of the present invention is shown;

[0097] Figure 8 A schematic diagram of the structure of the optical lens of Example 8 of the present invention is shown;

[0098] Figure 9 A schematic diagram of the structure of the optical lens of Example 9 of the present invention is shown;

[0099] Figure 10 A schematic diagram of the structure of the optical lens of Example 10 of the present invention is shown.

[0100] The above figures include the following reference numerals:

[0101] 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; S12, First side surface of the sixth lens; S13, Second side surface of the sixth lens; IMA, Imaging plane. Detailed Implementation

[0102] 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.

[0103] 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.

[0104] 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.

[0105] 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.

[0106] 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.

[0107] 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.

[0108] It should be noted that the left side of the optical lens is the first side, and the right side of the optical lens is the second side.

[0109] In an exemplary embodiment, the optical lens provided in this application can be used as a vehicle-mounted lens. For a vehicle-mounted lens, the left side is the object side, and the right side is the image side; the first side is also the object side, and the second side is also the image side. Light rays from the object side can form an image on the image side.

[0110] When the optical lens of this application is applied to a projection lens or a radar transmitting lens, the left side is the imaging side and the right side is the image source side. In an exemplary embodiment, the optical lens provided by this application can be used as, for example, a projection lens or a lidar transmitting lens. In this case, the image side of the optical lens can be the image source side, and the object side can be the imaging side. Light rays from the image source side can be imaged on the imaging side, and the imaging surface of the optical lens is the image source surface.

[0111] To address the challenges of miniaturization, small front diameter, low distortion, and large field of view in existing optical lenses, this invention provides an optical lens and an electronic device.

[0112] Example 1

[0113] like Figures 1 to 10 As shown, the optical lens includes, from the first side to the second side, a first lens with negative optical power, a second lens with negative optical power, a third lens with positive optical power, a fourth lens with positive optical power, a fifth lens with positive optical power, and a sixth lens with positive optical power. The first side of the first lens is convex and the second side is concave; the first side of the second lens is convex and the second side is concave; the second side of the third lens is convex; the first side of the fourth lens is concave and the second side is convex; the second side of the fifth lens is convex; and the first side of the sixth lens is convex.

[0114] The first lens has negative optical power. Its first side is convex, and its second side is concave. This negative optical power lens diverges light. The convex shape of the first lens results in a smaller angle of incidence, which helps collect more light from a wide field of view into the subsequent optical system, increasing luminous flux. The concave second side of the first lens controls the direction of large-angle light rays at the lens edge, and the light emitted from the second side provides a larger light-receiving surface for the subsequent optical system.

[0115] The second lens has negative optical power, with a convex first side and a concave second side. Preferably, the second lens is an aspherical lens with negative optical power, and its shape convex towards the first side. This allows it to collect light from the front end and appropriately diffuse it into the rear optical system, resulting in a smooth transition of light path. Aspherical surfaces are beneficial for improving resolution and compressing distortion.

[0116] The third lens has positive optical power. Its second side is convex, while its first side can be either convex or concave. When the first side is convex, the third lens is biconvex, which helps compress the light collected at the front end, reducing the aperture of the subsequent lenses. When the first side is concave, combined with positive optical power, it helps converge the light from the front end. The third lens is meniscus-shaped, ensuring that the light rays exiting the third lens maintain an upward trajectory, further smoothing the transition of light paths.

[0117] The fourth lens has positive optical power. Its first side is concave, and its second side is convex. The positive optical power of the fourth lens allows it to converge the incoming light, ensuring a smooth transition of light rays and reducing the aperture of subsequent lenses. The fourth lens is preferably an aspherical lens, as aspherical surfaces effectively correct aberrations and improve the resolving power of the optical system. Because the first side of the fourth lens is concave and the second side is convex, the light rays exiting the fourth lens maintain an upward trajectory. Under the same field of view, the light rays exiting from the second side of the fourth lens provide a larger light-receiving surface for the subsequent optical system. This benefits both the enlargement of the imaging plane and the aperture, while also allowing for greater light intake and increased brightness of the imaging plane.

[0118] The fifth lens has positive optical power. Its second side is convex, while its first side can be either convex or concave. When the first side is concave, combined with positive optical power, it helps to converge light rays. The fifth lens is meniscus-shaped and convex towards the second side, allowing light to be smoothly transmitted to the rear. When the first side is convex, combined with positive optical power, it also helps to converge light rays. The fifth lens is biconvex, allowing for a smooth transition in the light path.

[0119] The sixth lens has positive optical power. Its first side surface is convex, while its second side surface can be either convex or concave. When the second side surface is concave, it has positive optical power, a meniscus shape, and is convex towards the first side, which helps the light rays entering from the first side to converge smoothly onto the imaging plane. The convex first side surface helps deflect the light rays, reducing the angle at which the light rays strike the imaging plane. When the second side surface is convex, it has positive optical power and a biconvex shape, which helps compress the light rays collected at the front end, causing the light rays to deflect towards the optical axis, thus reducing the angle at which the light rays strike the imaging plane.

[0120] This application employs six lenses. By optimizing the optical power and surface shape of each lens, the optical lens of this invention has at least one beneficial effect, such as low distortion, large field of view, small front aperture, large image height, and miniaturization.

[0121] In this embodiment, the first side surface of the third lens is convex. When the first side surface of the third lens is convex, the third lens has a biconvex shape, which is beneficial for compressing the light collected at the front end and reducing the aperture of the rear lens.

[0122] In this embodiment, the first side surface of the third lens is concave. When the first side surface of the third lens is concave, combined with positive optical power, it is beneficial to converge the light from the front end. The shape of the third lens is crescent-shaped, and the light emitted through the third lens can still maintain an upward trend, further making the light path transition smoothly.

[0123] In this embodiment, the first side of the fifth lens is concave. When the first side of the fifth lens is concave, combined with positive optical power, it is beneficial to converge light. The fifth lens is crescent-shaped and convex towards the second side, allowing light to be transmitted smoothly to the rear.

[0124] In this embodiment, the first side surface of the fifth lens is convex. When the first side surface of the fifth lens is convex, it is beneficial for converging light when combined with positive optical power. The shape of the fifth lens is biconvex, which makes the light path transition smoothly.

[0125] In this embodiment, the second side surface of the sixth lens is concave. When the second side surface of the sixth lens is concave, it has positive optical power, a meniscus shape, and is convex towards the first side, which helps to smoothly converge the light rays entering from the first side to the imaging surface. The first side surface being convex helps to deflect the light rays, thereby reducing the angle at which the light rays are incident on the imaging surface.

[0126] In this embodiment, the second side surface of the sixth lens is convex. When the second side surface of the sixth lens is convex, it has positive optical power and a biconvex shape, which helps to compress the light collected at the front end and deflect the light along the optical axis to reduce the angle at which the light is incident on the imaging plane.

[0127] In this embodiment, the optical lens also includes an aperture stop, which is disposed between the second lens and the third lens. By placing the aperture stop between the second lens and the third lens, it is beneficial to effectively gather the light entering the optical system, shorten the overall length of the optical system, and reduce the aperture of the front and rear lens groups.

[0128] In this embodiment, both the second and fourth lenses are aspherical lenses. Aspherical lenses have different curvatures at different positions, which can better correct aberrations and improve resolution.

[0129] In this embodiment, the total focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy the condition: F / ENPD ≤ 1.8. Satisfying this condition is beneficial for achieving a small FNO and increasing the amount of light entering the lens. Preferably, F / ENPD ≤ 1.6.

[0130] 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 condition TTL / F ≤ 13 with respect to the total focal length F of the optical lens. Satisfying this condition effectively limits the length of the optical lens, achieving miniaturization. Preferably, TTL / F ≤ 11.

[0131] 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, 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: TTL / H / FOV ≤ 0.05. Satisfying this condition allows for effective limitation of the optical lens length under the same image height and field of view ratio, which is beneficial for miniaturizing the optical lens. Preferably, TTL / H / FOV ≤ 0.025. FOV is the maximum field of view of the optical lens, and FOV is related to the image height H, representing the corresponding field of view using that image height H.

[0132] In this embodiment, the optical back focal length (BFL), i.e., the distance from the center of the second side of the last lens of the optical lens to the center of the imaging plane, satisfies the condition that BFL / TTL ≥ 0.06 with respect to the total optical length of the optical lens (TTL), i.e., the distance from the center of the first side of the first lens of the optical lens to the center of the imaging plane. This condition ensures a long back focal length, allowing space for optical element installation and focusing, and preventing interference between components. Preferably, BFL / TTL ≥ 0.08.

[0133] In this embodiment, the optical back focal length (BFL), i.e., the distance from the center of the second side of the last lens of the optical lens to the center of the imaging plane, satisfies the condition that BFL / TL ≥ 0.08 with the lens group length of the optical lens (i.e., the distance from the center of the first side of the first lens of the optical lens to the center of the second side of the last lens of the optical lens). Satisfying this condition ensures a long back focal length while achieving miniaturization, which is beneficial for module assembly. Preferably, BFL / TL ≥ 0.1.

[0134] 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 following condition: D / H / FOV ≤ 0.02. Satisfying this condition ensures a small front aperture, which is beneficial for miniaturization. Preferably, D / H / FOV ≤ 0.01. FOV is the maximum field of view of the optical lens, and FOV is related to the image height H, representing the field of view corresponding to that image height H.

[0135] 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 following condition: D / H / θ≤0.8. Satisfying this condition ensures a small front aperture, which is beneficial for miniaturization. Preferably, D / H / θ≤0.6.

[0136] 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 total focal length F of the optical lens satisfy the condition: D / H / F≤0.5. Satisfying this condition allows the optical lens to have a large image height and a small aperture under a fixed focal length. Preferably, D / H / F≤0.3.

[0137] In this embodiment, the overall focal length F of the optical lens, the radian value θ of the maximum field of view of the optical lens, and the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens satisfy the condition: (F*θ) / D≥0.3. Satisfying this condition allows for a reduction in the front aperture of the optical lens, thereby reducing the volume of the imaging system. Preferably, (F*θ) / D≥0.6.

[0138] 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: (FOV*F) / H ≤ 60. Satisfying this condition, under the same image height, simultaneously satisfies both short focal length and small field of view, which is beneficial for achieving low distortion. Preferably, (FOV*F) / H ≤ 50. FOV is the maximum field of view of the optical lens, and FOV is related to the image height (H), representing the corresponding field of view using that image height (H).

[0139] In this embodiment, 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: 0.1 ≤ F / H ≤ 0.8. Satisfying this condition helps to control the focal length and image height within a certain range, ensuring the field of view and image height are well-matched, which is beneficial for improving resolution. Preferably, 0.2 ≤ F / H ≤ 0.5.

[0140] In this embodiment, the focal length F1 of the first lens and the total focal length F of the optical lens satisfy the condition: F1 / F ≤ -0.1. Satisfying this condition ensures that the focal length of the first lens is negative, controlling the focal length of the first lens to achieve smooth beam transition while simultaneously reducing aberrations and improving image quality. Preferably, F1 / F ≤ -1.

[0141] In this embodiment, the focal length F2 of the second lens satisfies the condition F2 / F ≤ -0.1 with respect to the total focal length F of the optical lens. Satisfying this condition facilitates the rational allocation of the second lens's focal length, smoothly transitioning the light transmitted through the first lens to the third lens and the aperture stop, thus reducing FNO. Preferably, F2 / F ≤ -2.

[0142] In this embodiment, the focal length F3 of the third lens satisfies the condition F3 / F ≥ 0.1 with the overall focal length F of the optical lens. Properly controlling the focal length of the third lens helps control the light path between the third and fourth lenses, resulting in a smoother light transition, reduced sensitivity, and improved image quality. Preferably, F3 / F ≥ 1.

[0143] In this embodiment, the focal length F4 of the fourth lens satisfies the condition F4 / F≥0.1 with the overall focal length F of the optical lens. By controlling the focal length of the fourth lens, the light rays emitted through the fourth lens can still maintain an upward trend, giving the subsequent optical system a larger light-receiving surface and increasing the light flux. Preferably, F4 / F≥4.

[0144] In this embodiment, the focal length F5 of the fifth lens satisfies the condition F5 / F ≥ 0.1 with the overall focal length F of the optical lens. By reasonably controlling the focal length of the fifth lens, light can enter the rear optical system smoothly, which is beneficial for light collection, ensuring light transmission, and improving resolution. Preferably, F5 / F ≥ 4.

[0145] In this embodiment, the focal length F6 of the sixth lens satisfies the condition F6 / F≥0.1 with the total focal length F of the optical lens. Satisfying this condition helps ensure that the focal length of the sixth lens is positive, converging the front-end light rays and allowing the light to converge smoothly onto the imaging plane, thus improving image quality. Preferably, F6 / F≥8.

[0146] In this embodiment, the radius of curvature R3 of the first side surface of the second 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 condition: R3 / TTL ≥ 0.1. Satisfying this condition helps ensure that the radius of curvature of the first side surface of the second lens is positive, which is beneficial for collecting front-end light and appropriately diffusing it into the rear optical system, resulting in a smooth transition of light path. Preferably, R3 / TTL ≥ 1.

[0147] In this embodiment, the radius of curvature R7 of the second side surface of the third 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 condition: R7 / TTL ≤ -0.1. Satisfying this condition helps ensure that the radius of curvature of the second side surface of the third lens is negative and its surface shape is convex, allowing light to converge smoothly to the rear optical system. Preferably, R7 / TTL ≤ -0.15.

[0148] In this embodiment, the radius of curvature R8 of the first side surface of the fourth 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 condition: R8 / TTL ≤ -0.1. Satisfying this condition helps ensure that the radius of curvature of the first side surface of the fourth lens is negative and its surface shape is concave, which is beneficial for receiving light transmitted from the third lens and correcting distortion. Preferably, R8 / TTL ≤ -0.8.

[0149] In this embodiment, the distance T34 between the third and fourth lenses on the optical axis satisfies the condition T34 / F ≥ 0.8 with respect to the overall focal length F of the optical lens. Satisfying this condition ensures a larger air gap between the third and fourth lenses, allowing for effective light convergence and reducing distortion in the fourth lens. Preferably, T34 / F ≥ 1.

[0150] In this embodiment, the distance T56 between the fifth and sixth lenses on the optical axis satisfies the condition T56 / F ≤ 0.5 with respect to the overall focal length F of the optical lens. Satisfying this condition results in a smaller air gap between the fifth and sixth lenses, leading to smoother light path and improved image quality. Preferably, T56 / F ≤ 0.2.

[0151] 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 and the aperture D13 of the second side of the sixth lens of the optical lens satisfy the condition: 0.8 ≤ D / D13 ≤ 1.2. Satisfying this condition ensures that the effective aperture of the front end and the effective aperture of the rear end of the optical lens are close, which helps to reduce the optical axis distance between the transmitting and receiving lenses, thereby reducing the overall module size. Preferably, 0.9 ≤ D / D13 ≤ 1.1.

[0152] 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 and the image height H corresponding to the maximum field of view of the optical lens satisfy the condition: D / H ≤ 1.4. Satisfying this condition ensures a smaller effective aperture at the front end of the optical lens under the same imaging plane and image height, which is beneficial for reducing the optical axis distance between the transmitting and receiving lenses, thereby reducing the overall module size. Preferably, D / H ≤ 1.3.

[0153] In this embodiment, the light-transmitting aperture D13 of the second side of the sixth lens of the optical lens, the optical back focal length (i.e., the distance BFL from the center of the second side of the last lens of the optical lens to the center of the imaging plane), and the image height H corresponding to the maximum field of view of the optical lens satisfy the condition: D13*BFL / H≥4. Satisfying this condition ensures a long back focal length under the same imaging plane and image height, which is beneficial for module installation. Preferably, D13*BFL / H≥6.

[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 maximum field of view (FOV) of the optical lens satisfy the following condition: |(H / 2-F*tan(FOV / 2)) / (F*tan(FOV / 2))|≤0.6. Satisfying this condition ensures that, for the same field of view, the difference between the ideal image height and the actual image height of the optical lens is small, thus minimizing distortion. Preferably, |(H / 2-F*tan(FOV / 2)) / (F*tan(FOV / 2))|≤0.55. FOV is the maximum field of view of the optical lens, and FOV is related to the image height H, representing the corresponding field of view using that image height H.

[0155] In this embodiment, the maximum effective aperture D1 of the first side of the first lens and the aperture number FNO of the optical lens satisfy the condition: D1 / FNO≥5. Satisfying this condition is beneficial for the optical system to achieve large aperture characteristics, increase the light throughput of the optical system, and improve image sharpness. Preferably, D1 / FNO≥10.

[0156] Example 2

[0157] like Figures 1 to 10 As shown, the optical lens, from the first side to the second side, sequentially includes: a first lens with negative optical power; a second lens with negative optical power; a third lens with positive optical power; a fourth lens with positive optical power; a fifth lens with positive optical power; and a sixth lens with positive optical power. The maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens satisfies the condition that D / H ≤ 1.4 with respect to the image height H corresponding to the maximum field of view of the optical lens. Satisfying this condition ensures a smaller effective aperture at the front end of the optical lens under the same imaging plane and image height, which is beneficial for reducing the optical axis distance between the transmitting and receiving lenses, thereby reducing the overall module size. Preferably, D / H ≤ 1.3.

[0158] In this embodiment, the first side of the first lens is convex, and the second side is concave. The negative optical power first lens has a diverging effect on light. The shape of the first lens is convex towards the first side, and the incident angle of light is small, which is conducive to collecting more light from a large field of view into the subsequent optical system and increasing the light flux. The second side of the first lens is concave, which can control the direction of large-angle light rays at the edge of the lens. The light rays emitted through the second side of the first lens can provide a larger light receiving surface for the subsequent optical system.

[0159] In this embodiment, the first side of the second lens is convex, and the second side is concave. The second lens is preferably an aspherical lens, a negative optical power aspherical lens, and its shape convex towards the first side, enabling it to collect light from the front end and appropriately diffuse it into the rear optical system, resulting in a smooth transition of light path. Aspherical surfaces are beneficial for improving resolution and compressing distortion.

[0160] In this embodiment, the first side surface of the third lens is convex, and the second side surface is convex. The third lens has a biconvex shape, which helps to compress the light collected at the front end and reduce the aperture of the rear lens.

[0161] In this embodiment, the first side of the third lens is concave, and the second side is convex. Combined with positive optical power, this facilitates the convergence of light rays from the front end. The third lens is crescent-shaped, ensuring that the light rays exiting through it maintain an upward trajectory, further smoothing the transition of the light path.

[0162] In this embodiment, the first side of the fourth lens is concave, and the second side is convex. The fourth lens has positive optical power, enabling it to converge the light rays from the front, ensuring a smooth transition of light path and reducing the aperture of the rear lens. The fourth lens is preferably an aspherical lens, as aspherical surfaces can effectively correct aberrations and improve the resolving power of the optical system. Because the first side of the fourth lens is concave and the second side is convex, the light rays exiting the fourth lens maintain an upward trajectory. Under the same field of view, the light rays exiting from the second side of the fourth lens allow the subsequent optical system to have a larger light-receiving surface. This benefits the enlargement of the imaging plane and aperture, while also achieving a greater amount of light intake and increasing the brightness of the imaging plane.

[0163] In this embodiment, the first side of the fifth lens is concave, and the second side is convex. Combined with positive optical power, this facilitates light convergence. The fifth lens is crescent-shaped and convex towards the second side, ensuring smooth light transmission to the rear.

[0164] In this embodiment, the first side surface of the fifth lens is convex, and the second side surface is also convex. Combined with positive optical power, this facilitates light convergence. The biconvex shape of the fifth lens ensures a smooth transition in the light path.

[0165] In this embodiment, the first side of the sixth lens is convex, and the second side is concave. The positive optical power, meniscus shape, and convexity towards the first side facilitate the smooth convergence of light rays entering from the first side onto the imaging surface. The convexity of the first side also helps to deflect light rays, reducing the angle at which the light rays incident on the imaging surface.

[0166] In this embodiment, the first side surface of the sixth lens is convex, and the second side surface is also convex. The positive optical power and biconvex shape help compress the light collected at the front end, causing the light to bend towards the optical axis, thereby reducing the angle at which the light is incident on the imaging plane.

[0167] This application employs six lenses. By optimizing the optical power and surface shape of each lens, the optical lens of this invention has at least one beneficial effect, such as low distortion, large field of view, small front aperture, large image height, and miniaturization.

[0168] In this embodiment, the optical lens also includes an aperture stop, which is disposed between the second lens and the third lens. By placing the aperture stop between the second lens and the third lens, it is beneficial to effectively gather the light entering the optical system, shorten the overall length of the optical system, and reduce the aperture of the front and rear lens groups.

[0169] In this embodiment, both the second and fourth lenses are aspherical lenses. Aspherical lenses have different curvatures at different positions, which can better correct aberrations and improve resolution.

[0170] In this embodiment, the total focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy the condition: F / ENPD ≤ 1.8. Satisfying this condition is beneficial for achieving a small FNO and increasing the amount of light entering the lens. Preferably, F / ENPD ≤ 1.6.

[0171] 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 condition TTL / F ≤ 13 with respect to the total focal length F of the optical lens. Satisfying this condition effectively limits the length of the optical lens, achieving miniaturization. Preferably, TTL / F ≤ 11.

[0172] 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, 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: TTL / H / FOV ≤ 0.05. Satisfying this condition allows for effective limitation of the optical lens length under the same image height and field of view ratio, which is beneficial for miniaturizing the optical lens. Preferably, TTL / H / FOV ≤ 0.025. FOV is the maximum field of view of the optical lens, and FOV is related to the image height H, representing the corresponding field of view using that image height H.

[0173] In this embodiment, the optical back focal length (BFL), i.e., the distance from the center of the second side of the last lens of the optical lens to the center of the imaging plane, satisfies the condition that BFL / TTL ≥ 0.06 with respect to the total optical length of the optical lens (TTL), i.e., the distance from the center of the first side of the first lens of the optical lens to the center of the imaging plane. This condition ensures a long back focal length, allowing space for optical element installation and focusing, and preventing interference between components. Preferably, BFL / TTL ≥ 0.08.

[0174] In this embodiment, the optical back focal length (BFL), i.e., the distance from the center of the second side of the last lens of the optical lens to the center of the imaging plane, satisfies the condition that BFL / TL ≥ 0.08 with the lens group length of the optical lens (i.e., the distance from the center of the first side of the first lens of the optical lens to the center of the second side of the last lens of the optical lens). Satisfying this condition ensures a long back focal length while achieving miniaturization, which is beneficial for module assembly. Preferably, BFL / TL ≥ 0.1.

[0175] 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 following condition: D / H / FOV ≤ 0.02. Satisfying this condition ensures a small front aperture, which is beneficial for miniaturization. Preferably, D / H / FOV ≤ 0.01. FOV is the maximum field of view of the optical lens, and FOV is related to the image height H, representing the field of view corresponding to that image height H.

[0176] 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 following condition: D / H / θ≤0.8. Satisfying this condition ensures a small front aperture, which is beneficial for miniaturization. Preferably, D / H / θ≤0.6.

[0177] 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 total focal length F of the optical lens satisfy the condition: D / H / F≤0.5. Satisfying this condition allows the optical lens to have a large image height and a small aperture under a fixed focal length. Preferably, D / H / F≤0.3.

[0178] In this embodiment, the overall focal length F of the optical lens, the radian value θ of the maximum field of view of the optical lens, and the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens satisfy the condition: (F*θ) / D≥0.3. Satisfying this condition allows for a reduction in the front aperture of the optical lens, thereby reducing the volume of the imaging system. Preferably, (F*θ) / D≥0.6.

[0179] 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: (FOV*F) / H ≤ 60. Satisfying this condition, under the same image height, simultaneously satisfies both short focal length and small field of view, which is beneficial for achieving low distortion. Preferably, (FOV*F) / H ≤ 50. FOV is the maximum field of view of the optical lens, and FOV is related to the image height (H), representing the corresponding field of view using that image height (H).

[0180] In this embodiment, 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: 0.1 ≤ F / H ≤ 0.8. Satisfying this condition helps to control the focal length and image height within a certain range, ensuring the field of view and image height are well-matched, which is beneficial for improving resolution. Preferably, 0.2 ≤ F / H ≤ 0.5.

[0181] In this embodiment, the focal length F1 of the first lens and the total focal length F of the optical lens satisfy the condition: F1 / F ≤ -0.1. Satisfying this condition ensures that the focal length of the first lens is negative, controlling the focal length of the first lens to achieve smooth beam transition while simultaneously reducing aberrations and improving image quality. Preferably, F1 / F ≤ -1.

[0182] In this embodiment, the focal length F2 of the second lens satisfies the condition F2 / F ≤ -0.1 with respect to the total focal length F of the optical lens. Satisfying this condition facilitates the rational allocation of the second lens's focal length, smoothly transitioning the light transmitted through the first lens to the third lens and the aperture stop, thus reducing FNO. Preferably, F2 / F ≤ -2.

[0183] In this embodiment, the focal length F3 of the third lens satisfies the condition F3 / F ≥ 0.1 with the overall focal length F of the optical lens. Properly controlling the focal length of the third lens helps control the light path between the third and fourth lenses, resulting in a smoother light transition, reduced sensitivity, and improved image quality. Preferably, F3 / F ≥ 1.

[0184] In this embodiment, the focal length F4 of the fourth lens satisfies the condition F4 / F≥0.1 with the overall focal length F of the optical lens. By controlling the focal length of the fourth lens, the light rays emitted through the fourth lens can still maintain an upward trend, giving the subsequent optical system a larger light-receiving surface and increasing the light flux. Preferably, F4 / F≥4.

[0185] In this embodiment, the focal length F5 of the fifth lens satisfies the condition F5 / F ≥ 0.1 with the overall focal length F of the optical lens. By reasonably controlling the focal length of the fifth lens, light can enter the rear optical system smoothly, which is beneficial for light collection, ensuring light transmission, and improving resolution. Preferably, F5 / F ≥ 4.

[0186] In this embodiment, the focal length F6 of the sixth lens satisfies the condition F6 / F≥0.1 with the total focal length F of the optical lens. Satisfying this condition helps ensure that the focal length of the sixth lens is positive, converging the front-end light rays and allowing the light to converge smoothly onto the imaging plane, thus improving image quality. Preferably, F6 / F≥8.

[0187] In this embodiment, the radius of curvature R3 of the first side surface of the second 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 condition: R3 / TTL ≥ 0.1. Satisfying this condition helps ensure that the radius of curvature of the first side surface of the second lens is positive, which is beneficial for collecting front-end light and appropriately diffusing it into the rear optical system, resulting in a smooth transition of light path. Preferably, R3 / TTL ≥ 1.

[0188] In this embodiment, the radius of curvature R7 of the second side surface of the third 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 condition: R7 / TTL ≤ -0.1. Satisfying this condition helps ensure that the radius of curvature of the second side surface of the third lens is negative and its surface shape is convex, allowing light to converge smoothly to the rear optical system. Preferably, R7 / TTL ≤ -0.15.

[0189] In this embodiment, the radius of curvature R8 of the first side surface of the fourth 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 condition: R8 / TTL ≤ -0.1. Satisfying this condition helps ensure that the radius of curvature of the first side surface of the fourth lens is negative and its surface shape is concave, which is beneficial for receiving light transmitted from the third lens and correcting distortion. Preferably, R8 / TTL ≤ -0.8.

[0190] In this embodiment, the distance T34 between the third and fourth lenses on the optical axis satisfies the condition T34 / F ≥ 0.8 with respect to the overall focal length F of the optical lens. Satisfying this condition ensures a larger air gap between the third and fourth lenses, allowing for effective light convergence and reducing distortion in the fourth lens. Preferably, T34 / F ≥ 1.

[0191] In this embodiment, the distance T56 between the fifth and sixth lenses on the optical axis satisfies the condition T56 / F ≤ 0.5 with respect to the overall focal length F of the optical lens. Satisfying this condition results in a smaller air gap between the fifth and sixth lenses, leading to smoother light path and improved image quality. Preferably, T56 / F ≤ 0.2.

[0192] 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 and the aperture D13 of the second side of the sixth lens of the optical lens satisfy the condition: 0.8 ≤ D / D13 ≤ 1.2. Satisfying this condition ensures that the effective aperture of the front end and the effective aperture of the rear end of the optical lens are close, which helps to reduce the optical axis distance between the transmitting and receiving lenses, thereby reducing the overall module size. Preferably, 0.9 ≤ D / D13 ≤ 1.1.

[0193] In this embodiment, the light-transmitting aperture D13 of the second side of the sixth lens of the optical lens, the optical back focal length (i.e., the distance BFL from the center of the second side of the last lens of the optical lens to the center of the imaging plane), and the image height H corresponding to the maximum field of view of the optical lens satisfy the condition: D13*BFL / H≥4. Satisfying this condition ensures a long back focal length under the same imaging plane and image height, which is beneficial for module installation. Preferably, D13*BFL / H≥6.

[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 maximum field of view (FOV) of the optical lens satisfy the following condition: |(H / 2-F*tan(FOV / 2)) / (F*tan(FOV / 2))|≤0.6. Satisfying this condition ensures that, for the same field of view, the difference between the ideal image height and the actual image height of the optical lens is small, thus minimizing distortion. Preferably, |(H / 2-F*tan(FOV / 2)) / (F*tan(FOV / 2))|≤0.55. FOV is the maximum field of view of the optical lens, and FOV is related to the image height H, representing the corresponding field of view using that image height H.

[0195] In this embodiment, the maximum effective aperture D1 of the first side of the first lens and the aperture number FNO of the optical lens satisfy the condition: D1 / FNO≥5. Satisfying this condition is beneficial for the optical system to achieve large aperture characteristics, increase the light throughput of the optical system, and improve image sharpness. Preferably, D1 / FNO≥10.

[0196] Optionally, the aforementioned optical lens may also include a color filter for correcting color deviation and a protective glass for protecting the photosensitive element located on the imaging surface.

[0197] The optical lens in this application can employ multiple lenses, such as the six lenses mentioned above. This application does not specifically limit the number of spherical and aspherical lenses; when image quality is a primary concern, the number of aspherical lenses can be increased. The characteristic of an aspherical lens is that its curvature changes continuously from the lens center to the lens periphery. Unlike a spherical lens, which has a constant curvature from the lens center to the lens periphery, an aspherical lens has better curvature radius characteristics, offering advantages in improving distortion aberrations and astigmatism. By using aspherical lenses, aberrations occurring during imaging can be eliminated as much as possible, thereby improving image quality.

[0198] 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, and sixth 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 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 sixth lenses can all be aspherical glass lenses. Of course, in applications with lower temperature stability requirements, the first to sixth lenses in the optical lens can also be made of plastic. Using plastic to make optical lenses can effectively reduce manufacturing costs. Alternatively, the first to sixth lenses in the optical lens can also be made of a combination of plastic and glass.

[0199] 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.

[0200] 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 six lenses are described as an example in the embodiments, the optical lens is not limited to including six lenses. If necessary, the optical lens may also include other numbers of lenses.

[0201] 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.

[0202] It should be noted that any of the examples one through ten below are applicable to all embodiments of this application.

[0203] Example 1

[0204] like Figure 1 The diagram shown is a schematic of the optical lens structure of Example 1.

[0205] like Figure 1 As shown, the optical lens, from the first side to the second side, includes: a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and an imaging plane IMA.

[0206] 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 convex, and its second side surface S4 is concave. The third lens L3 has positive optical power, its first side surface S6 is convex, and its second side surface S7 is convex. The fourth lens L4 has positive optical power, its first side surface S8 is concave, and its second side surface S9 is convex. The fifth lens L5 has positive optical power, its first side surface S10 is concave, and its second side surface S11 is convex. The sixth lens L6 has positive optical power, its first side surface S12 is convex, and its second side surface S13 is concave. Light from the first side passes sequentially through surfaces S1 to S13 and is finally imaged onto the imaging plane IMA.

[0207] In this example, the total effective focal length F of the optical lens is 6.320mm, the maximum field of view (FOV) of the optical lens is 142.600°, and the total length (TTL) of the optical lens is 58.838mm.

[0208] 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).

[0209]

[0210]

[0211] Table 1

[0212] In Example 1, the surface shape of each aspherical lens can be defined using, but is not limited to, the following aspherical formula:

[0213]

[0214] 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, and E are all higher-order coefficients. Table 2 below shows the conic coefficient k and the higher-order coefficients A, B, C, D, and E that can be used for the aspherical lens surfaces S3, S4, S8, and S9 in Example 1.

[0215] Higher order terms / 4 6 8 10 12 Surf K A B C D E 3 111.6400 1.3839E-03 -4.3630E-05 6.9608E-07 -6.1701E-09 1.4933E-11 4 1.4147 1.3845E-03 -7.7067E-06 -2.4907E-06 9.6569E-08 -1.3092E-09 8 39.2050 -7.2522E-06 1.3943E-06 -1.5095E-08 2.0050E-12 9.6744E-14 9 -2.8175 6.2117E-05 4.6369E-08 1.4949E-08 -1.7135E-10 5.2408E-13

[0216] Table 2

[0217] Example 2

[0218] like Figure 2 The diagram shown is a schematic of the optical lens structure for Example 2. For the sake of brevity, descriptions similar to those in Example 1 will be omitted in this example and the following examples.

[0219] like Figure 2 As shown, the optical lens, from the first side to the second side, includes: a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and an imaging plane IMA.

[0220] 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 convex, and its second side surface S4 is concave. The third lens L3 has positive optical power, its first side surface S6 is convex, and its second side surface S7 is convex. The fourth lens L4 has positive optical power, its first side surface S8 is concave, and its second side surface S9 is convex. The fifth lens L5 has positive optical power, its first side surface S10 is concave, and its second side surface S11 is convex. The sixth lens L6 has positive optical power, its first side surface S12 is convex, and its second side surface S13 is concave. Light from the first side passes sequentially through surfaces S1 to S13 and is finally imaged onto the imaging plane IMA.

[0221] In this example, the total effective focal length F of the optical lens is 6.325mm, the maximum field of view (FOV) of the optical lens is 142.600°, and the total length (TTL) of the optical lens is 58.727mm.

[0222] 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).

[0223] Surf Radius Thickness Nd Vd 1 24.133 0.964 1.91 35.28 2 8.652 4.791 3 88.286 1.618 1.59 60.53 4 9.974 7.343 STO Infinity 0.071 6 152.096 3.889 1.78 25.72 7 -12.259 8.579 8 -61.886 9.009 1.59 60.53 9 -16.282 0.212 10 -156.062 8.554 1.50 81.61 11 -16.143 0.070 12 54.991 7.820 1.85 23.79 13 200.940 5.807 IMA / /

[0224] Table 3

[0225] Table 4 below shows the conic coefficient k and the coefficients A, B, C, D, and E of each higher-order term that can be used for the aspherical lens surfaces S3, S4, S8, and S9 in Example 2.

[0226] Higher order terms / 4 6 8 10 12 Surf K A B C D E 3 106.1800 1.3803E-03 -4.3589E-05 6.9900E-07 -6.1104E-09 1.5223E-11 4 1.4072 1.3693E-03 -8.2558E-06 -2.4881E-06 9.6932E-08 -1.2952E-09 8 39.7440 -5.0248E-06 1.3757E-06 -1.5216E-08 4.2145E-12 1.3862E-13 9 -2.5022 6.2228E-05 5.3882E-08 1.4962E-08 -1.7135E-10 5.2790E-13

[0227] Table 4

[0228] Example 3

[0229] like Figure 3 The diagram shown is a schematic representation of the optical lens structure in Example 3. For the sake of brevity, descriptions similar to those in Example 1 will be omitted in this example and the following examples.

[0230] like Figure 3 As shown, the optical lens, from the first side to the second side, includes: a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and an imaging plane IMA.

[0231] 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 convex, and its second side surface S4 is concave. 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 concave, and its second side surface S9 is convex. The fifth lens L5 has positive optical power, its first side surface S10 is concave, and its second side surface S11 is convex. The sixth lens L6 has positive optical power, its first side surface S12 is convex, and its second side surface S13 is concave. Light from the first side passes sequentially through surfaces S1 to S13 and is finally imaged onto the imaging plane IMA.

[0232] In this example, the total effective focal length F of the optical lens is 6.310mm, the maximum field of view (FOV) of the optical lens is 142.600°, and the total length (TTL) of the optical lens is 58.948mm.

[0233] 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).

[0234] Surf Radius Thickness Nd Vd 1 22.532 0.971 1.91 35.28 2 8.713 4.855 3 76.867 1.505 1.59 60.53 4 9.899 7.385 STO Infinity 0.094 6 -205.721 3.906 1.78 25.72 7 -11.569 9.833 8 -64.575 7.441 1.59 60.53 9 -16.149 0.199 10 -187.044 8.480 1.50 81.61 11 -16.223 0.121 12 53.347 7.911 1.85 23.79 13 201.620 6.247 IMA / /

[0235] Table 5

[0236] Table 6 below shows the conic coefficient k and the coefficients A, B, C, D, and E of each higher-order term that can be used for the aspherical lens surfaces S3, S4, S8, and S9 in Example 3.

[0237] Higher order terms / 4 6 8 10 12 Surf K A B C D E 3 86.1660 1.3781E-03 -4.3710E-05 6.9786E-07 -6.1131E-09 1.5231E-11 4 1.4155 1.3708E-03 -7.5814E-06 -2.4754E-06 9.6964E-08 -1.2993E-09 8 32.5720 4.1794E-07 1.4852E-06 -1.4513E-08 2.9918E-12 1.2885E-13 9 -3.0068 6.1679E-05 5.8801E-08 1.5019E-08 -1.7164E-10 5.1398E-13

[0238] Table 6

[0239] Example 4

[0240] like Figure 4 The diagram shown is a schematic representation of the optical lens structure in Example 4. For the sake of brevity, descriptions similar to those in Example 1 will be omitted in this example and the following examples.

[0241] like Figure 4 As shown, the optical lens, from the first side to the second side, includes: a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and an imaging plane IMA.

[0242] 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 convex, and its second side surface S4 is concave. 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 concave, and its second side surface S9 is convex. The fifth lens L5 has positive optical power, its first side surface S10 is concave, and its second side surface S11 is convex. The sixth lens L6 has positive optical power, its first side surface S12 is convex, and its second side surface S13 is concave. Light from the first side passes sequentially through surfaces S1 to S13 and is finally imaged onto the imaging plane IMA.

[0243] In this example, the total effective focal length F of the optical lens is 6.285mm, the maximum field of view (FOV) of the optical lens is 142.600°, and the total length (TTL) of the optical lens is 58.858mm.

[0244] 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).

[0245] Surf Radius Thickness Nd Vd 1 22.393 0.977 1.91 35.28 2 8.713 4.846 3 70.043 1.499 1.59 60.53 4 9.798 7.288 STO Infinity 0.188 6 -154.840 3.810 1.78 25.72 7 -11.450 9.605 8 -65.735 7.596 1.59 60.53 9 -16.085 0.150 10 -190.417 8.776 1.50 81.61 11 -16.389 0.096 12 50.786 7.921 1.85 23.79 13 200.831 6.107 IMA / /

[0246] Table 7

[0247] Table 8 below shows the conic coefficient k and the coefficients A, B, C, D, and E of each higher-order term that can be used for the aspherical lens surfaces S3, S4, S8, and S9 in Example 4.

[0248] Higher order terms / 4 6 8 10 12 Surf K A B C D E 3 80.1100 1.3876E-03 -4.3747E-05 6.9557E-07 -6.1657E-09 1.4221E-11 4 1.5059 1.3815E-03 -7.1055E-06 -2.4670E-06 9.6750E-08 -1.3242E-09 8 24.6840 2.4160E-06 1.5508E-06 -1.4306E-08 -3.1864E-12 8.2474E-14 9 -2.7312 6.2687E-05 6.4803E-08 1.5120E-08 -1.7115E-10 5.0375E-13

[0249] Table 8

[0250] Example 5

[0251] like Figure 5 The diagram shown is a schematic representation of the optical lens structure in Example 5. For the sake of brevity, descriptions similar to those in Example 1 will be omitted in this example and the following examples.

[0252] like Figure 5 As shown, the optical lens, from the first side to the second side, includes: a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and an imaging plane IMA.

[0253] 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 convex, and its second side surface S4 is concave. The third lens L3 has positive optical power, its first side surface S6 is convex, and its second side surface S7 is convex. The fourth lens L4 has positive optical power, its first side surface S8 is concave, 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 positive optical power, its first side surface S12 is convex, and its second side surface S13 is concave. Light from the first side passes sequentially through surfaces S1 to S13 and is finally imaged onto the imaging plane IMA.

[0254] In this example, the total effective focal length F of the optical lens is 6.288mm, the maximum field of view (FOV) of the optical lens is 142.600°, and the total length (TTL) of the optical lens is 58.612mm.

[0255] 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).

[0256] Surf Radius Thickness Nd Vd 1 24.260 0.973 1.91 35.28 2 8.644 4.810 3 91.632 1.718 1.59 60.53 4 9.936 7.288 STO Infinity 0.014 6 194.946 3.769 1.78 25.72 7 -12.107 9.007 8 -62.707 9.134 1.59 60.53 9 -16.561 0.138 10 201.638 8.576 1.50 81.61 11 -17.857 0.007 12 60.614 7.656 1.85 23.79 13 201.860 5.524 IMA / /

[0257] Table 9

[0258] Table 10 below shows the conic coefficient k and the coefficients A, B, C, D, and E of each higher-order term that can be used for the aspherical lens surfaces S3, S4, S8, and S9 in Example 5.

[0259]

[0260]

[0261] Table 10

[0262] Example 6

[0263] like Figure 6 The diagram shown is a schematic of the optical lens structure of Example 6.

[0264] like Figure 6 As shown, the optical lens, from the first side to the second side, includes: a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and an imaging plane IMA.

[0265] 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 convex, and its second side surface S4 is concave. The third lens L3 has positive optical power, its first side surface S6 is convex, and its second side surface S7 is convex. The fourth lens L4 has positive optical power, its first side surface S8 is concave, 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 positive optical power, its first side surface S12 is convex, and its second side surface S13 is concave. Light from the first side passes sequentially through surfaces S1 to S13 and is finally imaged onto the imaging plane IMA.

[0266] In this example, the total effective focal length F of the optical lens is 6.307mm, the maximum field of view (FOV) of the optical lens is 142.600°, and the total length (TTL) of the optical lens is 58.900mm.

[0267] 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).

[0268] Surf Radius Thickness Nd Vd 1 24.435 0.927 1.91 35.28 2 8.672 4.893 3 91.097 1.742 1.59 60.53 4 9.928 7.291 STO Infinity 0.010 6 198.538 3.750 1.78 25.72 7 -12.090 9.130 8 -62.894 8.922 1.59 60.53 9 -16.563 0.139 10 208.394 8.573 1.50 81.61 11 -17.773 0.007 12 60.653 7.674 1.85 23.79 13 156.924 5.841 IMA / /

[0269] Table 11

[0270] Table 12 below shows the conic coefficient k and the coefficients A, B, C, D, and E of each higher-order term that can be used for the aspherical lens surfaces S3, S4, S8, and S9 in Example Six.

[0271] Higher order terms / 4 6 8 10 12 Surf K A B C D E 3 108.3500 1.3820E-03 -4.3594E-05 6.9788E-07 -6.1229E-09 1.5754E-11 4 1.4657 1.3716E-03 -8.6835E-06 -2.4978E-06 9.6876E-08 -1.2893E-09 8 35.3260 -2.4749E-06 1.4147E-06 -1.5359E-08 2.6247E-12 2.6554E-13 9 -2.5718 5.7578E-05 1.7695E-08 1.5062E-08 -1.6946E-10 5.3239E-13

[0272] Table 12

[0273] Example 7

[0274] like Figure 7 The diagram shown is a schematic of the optical lens structure of Example 7.

[0275] like Figure 7 As shown, the optical lens, from the first side to the second side, includes: a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and an imaging plane IMA.

[0276] 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 convex, and its second side surface S4 is concave. The third lens L3 has positive optical power, its first side surface S6 is convex, and its second side surface S7 is convex. The fourth lens L4 has positive optical power, its first side surface S8 is concave, and its second side surface S9 is convex. The fifth lens L5 has positive optical power, its first side surface S10 is concave, and its second side surface S11 is convex. The sixth lens L6 has positive optical power, its first side surface S12 is convex, and its second side surface S13 is convex. Light from the first side passes sequentially through surfaces S1 to S13 and is finally imaged onto the imaging plane IMA.

[0277] In this example, the total effective focal length F of the optical lens is 6.327mm, the maximum field of view (FOV) of the optical lens is 142.600°, and the total length (TTL) of the optical lens is 58.840mm.

[0278] 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).

[0279] Surf Radius Thickness Nd Vd 1 23.854 0.970 1.91 35.28 2 8.665 4.855 3 90.137 1.527 1.59 60.53 4 9.841 7.347 STO Infinity 0.001 6 199.052 3.889 1.78 25.72 7 -12.045 8.731 8 -62.487 8.524 1.59 60.53 9 -16.438 0.093 10 -178.029 8.678 1.50 81.61 11 -17.018 0.176 12 71.861 8.052 1.85 23.79 13 -177.896 5.996 IMA / /

[0280] Table 13

[0281] Table 14 below shows the conic coefficient k and the coefficients A, B, C, D, and E of each higher-order term that can be used for the aspherical lens surfaces S3, S4, S8, and S9 in Example 7.

[0282] Higher order terms / 4 6 8 10 12 Surf K A B C D E 3 116.2700 1.3863E-03 -4.3686E-05 6.9628E-07 -6.1238E-09 1.6105E-11 4 1.3483 1.3819E-03 -7.2912E-06 -2.4946E-06 9.6312E-08 -1.2852E-09 8 33.0330 -1.4615E-06 1.4125E-06 -1.4844E-08 6.3380E-12 1.0560E-13 9 -3.1468 6.3427E-05 5.3735E-08 1.4846E-08 -1.7180E-10 5.2993E-13

[0283] Table 14

[0284] Example 8

[0285] like Figure 8 The diagram shown is a schematic of the optical lens structure of Example 8.

[0286] like Figure 8 As shown, the optical lens, from the first side to the second side, includes: a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and an imaging plane IMA.

[0287] 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 convex, and its second side surface S4 is concave. The third lens L3 has positive optical power, its first side surface S6 is convex, and its second side surface S7 is convex. The fourth lens L4 has positive optical power, its first side surface S8 is concave, and its second side surface S9 is convex. The fifth lens L5 has positive optical power, its first side surface S10 is concave, and its second side surface S11 is convex. The sixth lens L6 has positive optical power, its first side surface S12 is convex, and its second side surface S13 is convex. Light from the first side passes sequentially through surfaces S1 to S13 and is finally imaged onto the imaging plane IMA.

[0288] In this example, the total effective focal length F of the optical lens is 6.311mm, the maximum field of view (FOV) of the optical lens is 142.600°, and the total length (TTL) of the optical lens is 58.757mm.

[0289] 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).

[0290]

[0291]

[0292] Table 15

[0293] Table 16 below shows the conic coefficient k and the coefficients A, B, C, D, and E of each higher-order term that can be used for the aspherical lens surfaces S3, S4, S8, and S9 in Example 8.

[0294] Higher order terms / 4 6 8 10 12 Surf K A B C D E 3 117.6200 1.3868E-03 -4.3655E-05 6.9674E-07 -6.1261E-09 1.5714E-11 4 1.4274 1.3813E-03 -7.4550E-06 -2.5007E-06 9.6182E-08 -1.2852E-09 8 36.7840 -1.1348E-06 1.4171E-06 -1.4855E-08 4.6661E-12 5.6805E-14 9 -2.5095 6.3496E-05 5.6935E-08 1.4840E-08 -1.7217E-10 5.2474E-13

[0295] Table 16

[0296] Example 9

[0297] like Figure 9 The diagram shown is a schematic of the optical lens structure of Example 9.

[0298] like Figure 9 As shown, the optical lens, from the first side to the second side, includes: a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and an imaging plane IMA.

[0299] 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 convex, and its second side surface S4 is concave. 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 concave, and its second side surface S9 is convex. The fifth lens L5 has positive optical power, its first side surface S10 is concave, and its second side surface S11 is convex. The sixth lens L6 has positive optical power, its first side surface S12 is convex, and its second side surface S13 is convex. Light from the first side passes sequentially through surfaces S1 to S13 and is finally imaged onto the imaging plane IMA.

[0300] In this example, the total effective focal length F of the optical lens is 6.275mm, the maximum field of view (FOV) of the optical lens is 142.600°, and the total length (TTL) of the optical lens is 58.608mm.

[0301] 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).

[0302]

[0303]

[0304] Table 17

[0305] Table 18 below shows the conic coefficient k and the coefficients A, B, C, D, and E of each higher-order term that can be used for the aspherical lens surfaces S3, S4, S8, and S9 in Example 9.

[0306] Higher order terms / 4 6 8 10 12 Surf K A B C D E 3 75.2310 1.4094E-03 -4.3676E-05 6.9542E-07 -6.1760E-09 1.5358E-11 4 1.2662 1.3883E-03 -6.2192E-06 -2.4826E-06 9.5795E-08 -1.2986E-09 8 26.9170 5.9454E-06 1.5494E-06 -1.4141E-08 4.9641E-12 3.0159E-14 9 -2.5667 6.3405E-05 5.5340E-08 1.4978E-08 -1.7181E-10 5.0746E-13

[0307] Table 18

[0308] Example 10

[0309] like Figure 10 The diagram shown is a schematic of the optical lens structure of Example 10.

[0310] like Figure 10 As shown, the optical lens, from the first side to the second side, includes: a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and an imaging plane IMA.

[0311] 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 convex, and its second side surface S4 is concave. 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 concave, and its second side surface S9 is convex. The fifth lens L5 has positive optical power, its first side surface S10 is concave, and its second side surface S11 is convex. The sixth lens L6 has positive optical power, its first side surface S12 is convex, and its second side surface S13 is convex. Light from the first side passes sequentially through surfaces S1 to S13 and is finally imaged onto the imaging plane IMA.

[0312] In this example, the total effective focal length F of the optical lens is 6.278mm, the maximum field of view (FOV) of the optical lens is 142.600°, and the total length (TTL) of the optical lens is 58.891mm.

[0313] 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).

[0314]

[0315]

[0316] Table 19

[0317] Table 20 below shows the conic coefficient k and the coefficients A, B, C, D, and E of each higher-order term that can be used for the aspherical lens surfaces S3, S4, S8, and S9 in Example 10.

[0318] Higher order terms / 4 6 8 10 12 Surf K A B C D E 3 76.7460 1.4141E-03 -4.3642E-05 6.9486E-07 -6.1991E-09 1.4994E-11 4 1.2516 1.3988E-03 -5.7847E-06 -2.4721E-06 9.5764E-08 -1.3074E-09 8 27.0000 5.9193E-06 1.5492E-06 -1.4165E-08 4.6481E-12 2.3892E-14 9 -3.1750 6.3597E-05 4.7356E-08 1.4928E-08 -1.7189E-10 5.1000E-13

[0319] Table 20

[0320] In summary, Examples 1 through 2 completely satisfy the relationships shown in Table 21.

[0321]

[0322]

[0323] Table 21

[0324] 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 F6, etc. (unit: mm).

[0325] Parameters / Examples 1 2 3 4 5 6 7 8 9 10 F 6.320 6.325 6.310 6.285 6.288 6.307 6.327 6.311 6.275 6.278 FOV 142.600 142.600 142.600 142.600 142.600 142.600 142.600 142.600 142.600 142.600 FNO 1.400 1.400 1.400 1.400 1.400 1.400 1.400 1.400 1.400 1.400 F1 -15.702 -15.637 -16.536 -16.611 -15.571 -15.559 -15.791 -15.732 -16.453 -16.503 F2 -19.667 -19.650 -19.868 -19.938 -19.478 -19.478 -19.293 -19.247 -19.498 -19.491 F3 15.112 15.092 16.002 16.095 15.129 15.122 15.075 15.071 16.193 16.203 F4 35.866 35.738 35.360 34.977 36.394 36.429 36.233 36.290 35.558 35.530 F5 35.704 35.931 35.581 35.911 33.831 33.760 37.639 37.819 37.253 37.152 F6 86.248 90.421 86.643 81.212 103.428 116.736 63.525 61.891 65.586 66.099 D 23.300 23.165 23.190 23.087 23.353 23.071 23.242 23.094 23.171 23.260 H 18.675 18.516 18.827 18.492 18.566 18.594 18.814 18.487 18.496 18.801 ENPD 4.514 4.518 4.507 4.489 4.491 4.505 4.520 4.508 4.482 4.485 BFL 5.874 5.807 6.247 6.107 5.524 5.841 5.996 5.952 6.113 6.398 TTL 58.838 58.727 58.948 58.858 58.612 58.900 58.840 58.757 58.608 58.891 TL 52.964 52.919 52.701 52.752 53.088 53.059 52.844 52.806 52.495 52.493 R3 82.557 88.286 76.867 70.043 91.632 91.097 90.137 90.331 71.283 69.947 R7 -12.070 -12.259 -11.569 -11.450 -12.107 -12.090 -12.045 -12.105 -11.630 -11.519 R8 -61.822 -61.886 -64.575 -65.735 -62.707 -62.894 -62.487 -62.487 -63.736 -63.443 T34 8.793 8.579 9.833 9.605 9.007 9.130 8.731 8.802 9.310 9.340 T56 0.074 0.070 0.121 0.096 0.007 0.007 0.176 0.194 0.453 0.454 D1 23.300 23.164 23.190 23.086 23.353 23.070 23.241 23.094 23.171 23.259 D13 22.948 22.410 22.842 21.958 21.743 21.935 22.460 22.619 22.316 23.178

[0326] Table 22

[0327] 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.

[0328] 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.

[0329] 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.

[0330] 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, The total number of lenses of the optical lens is six, sequentially comprising from the first side to the second side: a first lens with negative refractive power, a first side of the first lens being convex, and a second side being concave; a second lens with negative refractive power, a first side of the second lens being convex, and a second side being concave; a third lens with positive refractive power, a second side of the third lens being convex; a fourth lens with positive refractive power, a first side of the fourth lens being concave, and a second side being convex; a fifth lens with positive refractive power, a second side of the fifth lens being convex; a sixth lens with positive refractive power, a first side of the sixth lens being convex; a distance T34 between the third lens and the fourth lens on the optical axis and a total focal length F of the optical lens satisfy: 0.8≤T34 / F≤1.558; a radius of curvature R3 of the first side of the second lens and a total track length TTL of the optical lens, i.e., a distance from a first side center of the first lens of the optical lens to a center of an imaging surface of the optical lens satisfy: 1.563≥R3 / TTL≥1.

2. The optical lens of claim 1, wherein, The first side of the third lens is convex or concave.

3. The optical lens of claim 1, wherein, The first side of the fifth lens is concave or convex.

4. The optical lens of claim 1, wherein, The second side of the sixth lens is concave or convex.

5. The optical lens of any of claims 1 to 4, wherein, The total track length TTL of the optical lens, i.e., a distance from a first side center of the first lens of the optical lens to a center of an imaging surface of the optical lens and a total focal length F of the optical lens satisfy: TTL / F≤13.

6. The optical lens of any of claims 1 to 4, wherein, The optical lens satisfies at least one of the following conditions: The total track length TTL of the optical lens, i.e., a distance from a first side center of the first lens of the optical lens to a center of an imaging surface of the optical lens, an image height H corresponding to a maximum field of view of the optical lens, and a maximum field of view FOV of the optical lens satisfy: TTL / H / FOV≤0.05; A maximum entrance pupil 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: D / H / FOV≤0.02; The maximum entrance pupil 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 an arc value θ of the maximum field of view of the optical lens satisfy: D / H / θ≤0.8; The maximum entrance pupil 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 total focal length F of the optical lens satisfy: D / H / F≤0.5; The total focal length F of the optical lens, the arc value θ of the maximum field of view of the optical lens, and the maximum entrance pupil D of the first side of the first lens corresponding to the maximum field of view of the optical lens satisfy: (F*θ) / D≥0.3; A maximum aperture D of a first side surface of the first lens corresponding to a maximum field angle of the optical lens and an image height H corresponding to the maximum field angle of the optical lens satisfy: D / H≤1.

4.

7. The optical lens of any of claims 1 to 4, wherein, The optical lens satisfies at least one of the following conditions: An optical back focal length of the optical lens, i.e., a distance BFL from a center of a second side surface of a last lens of the optical lens to a center of an imaging surface and a total optical length of the optical lens, i.e., a distance TTL from a center of a first side surface of the first lens of the optical lens to the center of the imaging surface of the optical lens satisfy: BFL / TTL≥0.06; An optical back focal length of the optical lens, i.e., a distance BFL from a center of a second side surface of a last lens of the optical lens to a center of an imaging surface and a lens group length of the optical lens, i.e., a distance TL from a center of a first side surface of the first lens of the optical lens to the center of the second side surface of the last lens of the optical lens satisfy: BFL / TL≥0.08; A maximum aperture D of a first side surface of the first lens corresponding to a maximum field angle of the optical lens and an image height H corresponding to the maximum field angle of the optical lens satisfy: D / H≤1.

4.

8. The optical lens of any of claims 1 to 4, wherein, A maximum field angle FOV of the optical lens, a total focal length F of the optical lens and an image height H corresponding to the maximum field angle of the optical lens satisfy: (FOV*F) / H≤60.

9. The optical lens of any of claims 1 to 4, wherein, The total focal length F of the optical lens and the image height H corresponding to the maximum field angle of the optical lens satisfy: 0.1≤F / H≤0.

8.

10. The optical lens of any of claims 1 to 4, wherein, A focal length F1 of the first lens and the total focal length F of the optical lens satisfy: -2.643≤F1 / F≤-0.

1.

11. The optical lens of any of claims 1 to 4, wherein, A focal length F2 of the second lens and the total focal length F of the optical lens satisfy: -3.173≤F2 / F≤-0.

1.

12. The optical lens of any of claims 1 to 4, wherein, A focal length F3 of the third lens and the total focal length F of the optical lens satisfy: 2.581≥F3 / F≥0.

1.

13. The optical lens of any of claims 1 to 4, wherein, The optical lens satisfies at least one of the following conditions: A focal length F4 of the fourth lens and the total focal length F of the optical lens satisfy: 5.788≥F4 / F≥0.1; A radius of curvature R8 of a first side surface of the fourth lens and a total optical length of the optical lens, i.e., a distance TTL from a center of a first side surface of the first lens of the optical lens to a center of an imaging surface of the optical lens satisfy: R8 / TTL≤-0.1; A focal length F5 of the fifth lens and the total focal length F of the optical lens satisfy: 5.993≥F5 / F≥0.

1.

14. The optical lens of any of claims 1 to 4, wherein, A focal length F6 of the sixth lens and the total focal length F of the optical lens satisfy: 18.509≥F6 / F≥0.

1.

15. The optical lens of any of claims 1 to 4, wherein, A distance T56 of the fifth lens and the sixth lens on an optical axis and the total focal length F of the optical lens satisfy: T56 / F≤0.

5.

16. The optical lens of any of claims 1 to 4, wherein, The maximum field of view angle of the optical lens corresponds to an image height H, and a total focal length F of the optical lens and a maximum field of view angle FOV of the optical lens satisfy: |(H / 2-F*tan(FOV / 2)) / (F*tan(FOV / 2))|≤0.

6.

17. The optical lens of any of claims 1 to 4, wherein, The maximum field of view angle of the optical lens corresponds to a maximum light aperture D of the first side of the first lens, and a light aperture D13 of the second side of the sixth lens of the optical lens satisfy: 0.8≤D / D13≤1.

2.

18. The optical lens of any of claims 1 to 4, wherein, The optical lens satisfies at least one of the following conditions: The total focal length F of the optical lens and an entrance pupil diameter ENPD of the optical lens satisfy: F / ENPD≤1.8; The radius of curvature R7 of the second side of the third lens and the total optical length TTL of the optical lens, that is, the distance from the center of the first side of the first lens of the optical lens to the center of the imaging surface of the optical lens satisfy: R7 / TTL≤-0.1; The maximum effective aperture D1 of the first side of the first lens and the F number FNO of the optical lens satisfy: D1 / FNO≥5.

19. The optical lens of any of claims 1 to 4, wherein, The optical lens satisfies at least one of the following conditions: The total focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy: F / ENPD≤1.6; The total optical length TTL of the optical lens, that is, the distance from the center of the first side of the first lens of the optical lens to the center of the imaging surface of the optical lens and the total focal length F of the optical lens satisfy: 9.284≤TTL / F≤11; The total optical length TTL of the optical lens, that is, the distance from the center of the first side of the first lens of the optical lens to the center of the imaging surface of the optical lens, the image height H corresponding to the maximum field of view angle of the optical lens and the maximum field of view angle FOV of the optical lens satisfy: TTL / H / FOV≤0.025; The optical back focal length BFL of the optical lens, that is, the distance from the center of the second side of the last lens of the optical lens to the center of the imaging surface and the total optical length TTL of the optical lens, that is, the distance from the center of the first side of the first lens of the optical lens to the center of the imaging surface of the optical lens satisfy: 0.109≥BFL / TTL≥0.08; The optical back focal length BFL of the optical lens, that is, the distance from the center of the second side of the last lens of the optical lens to the center of the imaging surface and the lens group length TL of the optical lens, that is, the distance from the center of the first side of the first lens of the optical lens to the center of the second side of the last lens of the optical lens satisfy: 0.122≥BFL / TL≥0.1; The maximum light aperture D of the first side of the first lens corresponding to the maximum field of view angle of the optical lens, the image height H corresponding to the maximum field of view angle of the optical lens and the maximum field of view angle FOV of the optical lens satisfy: D / H / FOV≤0.01; The maximum light passing aperture D of the first side surface of the first lens corresponding to the maximum field of view angle of the optical lens, the image height H corresponding to the maximum field of view angle of the optical lens and the radian value θ of the maximum field of view angle of the optical lens satisfy: 0.495≤D / H / θ≤0.6; The maximum light passing aperture D of the first side surface of the first lens corresponding to the maximum field of view angle of the optical lens, the image height H corresponding to the maximum field of view angle of the optical lens and the total focal length value F of the optical lens satisfy: 0.195≤D / H / F≤0.3; The total focal length value F of the optical lens, the radian value θ of the maximum field of view angle of the optical lens and the maximum light passing aperture D of the first side surface of the first lens corresponding to the maximum field of view angle of the optical lens satisfy: 0.680≥(F*θ) / D≥0.6; The maximum field of view angle FOV of the optical lens, the total focal length value F of the optical lens and the image height H corresponding to the maximum field of view angle of the optical lens satisfy: 47.620≤(FOV*F) / H≤50; The total focal length value F of the optical lens and the image height H corresponding to the maximum field of view angle of the optical lens satisfy: 0.2≤F / H≤0.5; The focal length value F1 of the first lens and the total focal length value F of the optical lens satisfy: -2.643≤F1 / F≤-1; The focal length value F2 of the second lens and the total focal length value F of the optical lens satisfy: -3.173≤F2 / F≤-2; The focal length value F3 of the third lens and the total focal length value F of the optical lens satisfy: 2.581≥F3 / F≥1; The focal length value F4 of the fourth lens and the total focal length value F of the optical lens satisfy: 5.788≥F4 / F≥4; The focal length value F5 of the fifth lens and the total focal length value F of the optical lens satisfy: 5.993≥F5 / F≥4; The focal length value F6 of the sixth lens and the total focal length value F of the optical lens satisfy: 18.509≥F6 / F≥8; The curvature radius R7 of the second side surface of the third lens and the total optical length of the optical lens, i.e. the center distance TTL from the first side surface center of the first lens of the optical lens to the center of the imaging surface of the optical lens satisfy: -0.209≤R7 / TTL≤-0.15; The curvature radius R8 of the first side surface of the fourth lens and the total optical length of the optical lens, i.e. the center distance TTL from the first side surface center of the first lens of the optical lens to the center of the imaging surface of the optical lens satisfy: -1.117≤R8 / TTL≤-0.8; The interval distance T34 of the third lens and the fourth lens on the optical axis and the total focal length value F of the optical lens satisfy: 1.558≥T34 / F≥1; The interval distance T56 of the fifth lens and the sixth lens on the optical axis and the total focal length value F of the optical lens satisfy: 0.001≤T56 / F≤0.2; A maximum light passing aperture D of a first side surface of the first lens corresponding to a maximum field of view angle of the optical lens and a light passing aperture D13 of a second side surface of the sixth lens of the optical lens satisfy: 0.9≤D / D13≤1.1; A maximum light passing aperture D of a first side surface of the first lens corresponding to a maximum field of view angle of the optical lens and an image height H corresponding to the maximum field of view angle of the optical lens satisfy: 1.232≤D / H≤1.3; A light passing aperture D13 of a second side surface of the sixth lens of the optical lens, an optical back focal length of the optical lens, i.e., a distance BFL from a second side center of a last lens of the optical lens to a center of an imaging surface, and an image height H corresponding to a maximum field of view angle of the optical lens satisfy: 7.888≥D13*BFL / H≥6; An image height H corresponding to a maximum field of view angle of the optical lens, a total focal length value F of the optical lens, and a maximum field of view angle FOV of the optical lens satisfy: 0.493≤|(H / 2-F*tan(FOV / 2)) / (F*tan(FOV / 2))|≤0.55; A maximum effective aperture D1 of the first side surface of the first lens and an F number FNO of the optical lens satisfy: 16.681≥D1 / FNO≥10.

20. The optical lens of any of claims 1 to 4, wherein, The optical lens satisfies at least one of the following conditions: A total focal length value F of the optical lens and an entrance pupil diameter ENPD of the optical lens satisfy: 1.4≤F / ENPD≤1.6; An optical total length of the optical lens, i.e., a distance TTL from a first side surface center of the first lens of the optical lens to a center of an imaging surface of the optical lens, and a total focal length value F of the optical lens satisfy: 9.284≤TTL / F≤9.380; An optical total length of the optical lens, i.e., a distance TTL from a first side surface center of the first lens of the optical lens to a center of an imaging surface of the optical lens, an image height H corresponding to a maximum field of view angle of the optical lens, and a maximum field of view angle FOV of the optical lens satisfy: 0.022≤TTL / H / FOV≤0.025; A maximum light passing aperture D of a first side surface of the first lens corresponding to a maximum field of view angle of the optical lens, an image height H corresponding to the maximum field of view angle of the optical lens, and a maximum field of view angle FOV of the optical lens satisfy: 0.009≤D / H / FOV≤0.01; An optical back focal length of the optical lens, i.e., a distance BFL from a second side center of a last lens of the optical lens to a center of an imaging surface, and a lens group length of the optical lens, i.e., a distance TL from a first side center of the first lens of the optical lens to a second side center of the last lens of the optical lens, satisfy: 0.122≥BFL / TL≥0.104; The optical back focus of the optical lens, i.e., the distance BFL from the center of the second side of the last lens of the optical lens to the center of the imaging surface, 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 surface of the optical lens, satisfy: 0.109 >= BFL / TTL >= 0.094; The maximum aperture D of the first side of the first lens corresponding to the maximum field of view angle of the optical lens, the image height H corresponding to the maximum field of view angle of the optical lens, and the radian value θ of the maximum field of view angle of the optical lens satisfy: 0.495 <= D / H / θ <= 0.505; The maximum aperture D of the first side of the first lens corresponding to the maximum field of view angle of the optical lens, the image height H corresponding to the maximum field of view angle of the optical lens, and the total focal length value F of the optical lens satisfy: 0.195 <= D / H / F <= 0.200; The total focal length value F of the optical lens, the radian value θ of the maximum field of view angle of the optical lens, and the maximum aperture D of the first side of the first lens corresponding to the maximum field of view angle of the optical lens satisfy: 0.680 >= (F*θ) / D >= 0.670; The maximum field of view angle FOV of the optical lens, the total focal length value F of the optical lens, and the image height H corresponding to the maximum field of view angle of the optical lens satisfy: 47.620 <= (FOV*F) / H <= 48.714; The total focal length value F of the optical lens and the image height H corresponding to the maximum field of view angle of the optical lens satisfy: 0.334 <= F / H <= 0.342; The focal length value F1 of the first lens and the total focal length value F of the optical lens satisfy: -2.643 <= F1 / F <= -2.467; The focal length value F2 of the second lens and the total focal length value F of the optical lens satisfy: -3.173 <= F2 / F <= -3.049; The focal length value F3 of the third lens and the total focal length value F of the optical lens satisfy: 2.581 >= F3 / F >= 2.383; The focal length value F4 of the fourth lens and the total focal length value F of the optical lens satisfy: 5.788 >= F4 / F >= 5.566; The focal length value F5 of the fifth lens and the total focal length value F of the optical lens satisfy: 5.993 >= F5 / F >= 5.353; The focal length value F6 of the sixth lens and the total focal length value F of the optical lens satisfy: 18.509 >= F6 / F >= 9.808; The radius of curvature R3 of the first side of the second 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 surface of the optical lens, satisfy: 1.563 >= R3 / TTL >= 1.188; A radius of curvature R7 of a second side surface of the third lens and an overall optical length of the optical lens, i.e., a center distance TTL from a first side surface center of the first lens of the optical lens to an imaging surface center of the optical lens, satisfy: -0.209≤R7 / TTL≤-0.195; A radius of curvature R8 of a first side surface of the fourth lens and an overall optical length of the optical lens, i.e., a center distance TTL from a first side surface center of the first lens of the optical lens to an imaging surface center of the optical lens, satisfy: -1.117≤R8 / TTL≤-1.051; A separation distance T34 of the third lens and the fourth lens on an optical axis and an overall focal length F of the optical lens satisfy: 1.558≥T34 / F≥1.356; A separation distance T56 of the fifth lens and the sixth lens on an optical axis and an overall focal length F of the optical lens satisfy: 0.001≤T56 / F≤0.072; A maximum light passing aperture D of a first side surface of the first lens corresponding to a maximum field of view angle of the optical lens and a light passing aperture D13 of a second side surface of the sixth lens of the optical lens satisfy: 1.004≤D / D13≤1.074; A maximum light passing aperture D of a first side surface of the first lens corresponding to a maximum field of view angle of the optical lens and an image height H corresponding to a maximum field of view angle of the optical lens satisfy: 1.232≤D / H≤1.258; A light passing aperture D13 of a second side surface of the sixth lens of the optical lens, an optical back focus BFL of the optical lens, i.e., a center distance from a second side center of the last lens to an imaging surface center of the optical lens, and an image height H corresponding to a maximum field of view angle of the optical lens satisfy: 7.888≥D13*BFL / H≥6.470; An image height H corresponding to a maximum field of view angle of the optical lens, an overall focal length F of the optical lens, and a maximum field of view angle FOV of the optical lens satisfy: 0.493≤|(H / 2-F*tan(FOV / 2)) / (F*tan(FOV / 2))|≤0.505; A maximum effective aperture D1 of a first side surface of the first lens and an F number FNO of the optical lens satisfy: 16.681≥D1 / FNO≥16.

479.

21. An electronic device, comprising: An optical lens according to any one of claims 1 to 20 and an imaging element for converting an optical image formed by the optical lens into an electric signal.

Images