Optical lens and electronic device

Abstract

The application provides an optical lens and an electronic device. The optical lens comprises, in sequence from a first side to a second side: a first lens with negative optical power, the first side of which is a convex surface and the second side of which is a concave surface; a second lens with negative optical power, the first side of which is a concave surface and the second side of which is a concave surface; a third lens with positive optical power, the second side of which is a convex surface; a fourth lens with positive optical power, the first side of which is a convex surface; a fifth lens with positive optical power, the first side of which is a convex surface and the second side of which is a convex surface; and a sixth lens with positive optical power, the first side of which is a convex surface. The application solves the problem that the optical lens in the prior art cannot simultaneously meet the requirements of a large field of view, a small FNO, high resolution and miniaturization.

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 rapid development of automotive driver assistance systems, optical lenses have been used more and more widely in automobiles, and the requirements for small FNO and large field of view of optical lenses have become increasingly prominent.

[0003] For some special applications, a small FNO is usually required to increase the amount of light entering the lens; in order to improve image quality, the number of lenses is usually increased. However, increasing the number of lenses will increase the size and weight of the lens, which is not conducive to the miniaturization of optical lenses and will also increase costs.

[0004] There are also some special-purpose optical lenses that suffer from image quality degradation due to harsh environments, so they have high requirements for stable imaging over a wide temperature range.

[0005] In other words, existing optical lenses suffer from the problem of not being able to simultaneously achieve a large field of view, a small FNO, high resolution, and miniaturization. Summary of the Invention

[0006] The main objective of this invention is to provide an optical lens and an electronic device to solve the problem that existing optical lenses cannot simultaneously achieve a large field of view, a small FNO, high resolution, and miniaturization.

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

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

[0009] Furthermore, the first side surface of the third lens is convex.

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

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

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

[0013] Furthermore, the second side surface of the sixth lens is concave.

[0014] Furthermore, the fourth, fifth, and sixth lenses are aspherical lenses.

[0015] Furthermore, the optical lens also includes an aperture stop, which is positioned between the third lens and the fourth lens.

[0016] 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≤0.95.

[0017] 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≥0.03.

[0018] Furthermore, the image height H corresponding to the maximum field of view of the optical lens, the maximum field of view FOV 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 condition: D / H / FOV≤0.15.

[0019] Furthermore, the radius of curvature R1 of the first side surface of the first lens and the radius of curvature R2 of the second side surface of the first lens satisfy the following condition: R1 / R2≥1.5.

[0020] 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: (F*θ) / D≥0.15.

[0021] Furthermore, the total focal length F of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: 0.1≤F / H≤1.

[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 relationship: D / H / F≤2.

[0023] Furthermore, the focal length F1 of the first lens satisfies the following relationship with the total focal length F of the optical lens: F1 / F≤-2.

[0024] 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≤-1.

[0025] 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≥3.

[0026] Furthermore, the focal length F1 of the first lens and the focal length F2 of the second lens satisfy the following condition: 0.6 ≤ F1 / F2 ≤ 1.8.

[0027] Furthermore, the radius of curvature R3 of the first side surface of the second lens and the radius of curvature R4 of the second side surface of the second lens satisfy the following condition: -2≤R3 / R4≤-0.3.

[0028] Furthermore, the air gap d6 between the third lens and the aperture stop, the air gap d7 between the aperture stop and the fourth lens, and the total optical length of the optical lens, i.e. the distance TTL from the center of the first side of the first lens of the optical lens to the center of the imaging plane of the optical lens, satisfy the following: (d6+d7) / TTL≥0.03.

[0029] Furthermore, the air gap d2 between the first lens and the second lens and the total optical length of the optical lens, that is, the distance TTL from the center of the first side of the first lens to the center of the imaging plane of the optical lens, satisfy the following condition: d2 / TTL≥0.05.

[0030] Furthermore, the Sg value Sag8 corresponding to the maximum light-transmitting aperture of the first side of the fourth lens of the optical lens and the Sg value Sag9 corresponding to the maximum light-transmitting aperture of the second side of the fourth lens of the optical lens satisfy the following condition: 0.1≤|Sag8 / Sag9|≤1.5.

[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≤15.

[0032] Furthermore, the effective aperture DST of the aperture and the total focal length F of the optical lens satisfy the following condition: DST / F≥2.

[0033] 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≥55.

[0034] Furthermore, the maximum effective aperture D12 of the second side of the sixth lens corresponding to the maximum field of view 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: D12*BFL / H≥5.

[0035] Furthermore, the maximum effective aperture D12 of the second side of the sixth 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: D12 / H≥1.

[0036] Furthermore, the radius of curvature R3 of the first side of the second lens satisfies the following relationship with the total focal length F of the optical lens: R3 / F≤-0.05.

[0037] According to another aspect of the present invention, an optical lens is provided, comprising, from a first side to a second side, the following: 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 effective aperture DST of the aperture stop and the total focal length F of the optical lens satisfy the following condition: DST / F≥2.

[0038] Furthermore, the first side surface of the first lens is convex, and the second side surface is concave.

[0039] Furthermore, the first side surface of the second lens is concave, and the second side surface is concave.

[0040] Furthermore, the first side of the third lens is concave, and the second side is convex.

[0041] Furthermore, the first side surface of the third lens is convex, and the second side surface is convex.

[0042] Furthermore, the first side surface of the fourth lens is convex, and the second side surface is convex.

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

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

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

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

[0047] Furthermore, the fourth, fifth, and sixth lenses are aspherical lenses.

[0048] Furthermore, the optical lens also includes an aperture stop, which is positioned between the third lens and the fourth lens.

[0049] 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≤0.95.

[0050] 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≥0.03.

[0051] Furthermore, the image height H corresponding to the maximum field of view of the optical lens, the maximum field of view FOV 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 condition: D / H / FOV≤0.15.

[0052] Furthermore, the radius of curvature R1 of the first side surface of the first lens and the radius of curvature R2 of the second side surface of the first lens satisfy the following condition: R1 / R2≥1.5.

[0053] 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: (F*θ) / D≥0.15.

[0054] Furthermore, the total focal length F of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: 0.1≤F / H≤1.

[0055] 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 relationship: D / H / F≤2.

[0056] Furthermore, the focal length F1 of the first lens satisfies the following relationship with the total focal length F of the optical lens: F1 / F≤-2.

[0057] 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≤-1.

[0058] 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≥3.

[0059] Furthermore, the focal length F1 of the first lens and the focal length F2 of the second lens satisfy the following condition: 0.6 ≤ F1 / F2 ≤ 1.8.

[0060] Furthermore, the radius of curvature R3 of the first side surface of the second lens and the radius of curvature R4 of the second side surface of the second lens satisfy the following condition: -2≤R3 / R4≤-0.3.

[0061] Furthermore, the air gap d6 between the third lens and the aperture stop, the air gap d7 between the aperture stop and the fourth lens, and the total optical length of the optical lens, i.e. the distance TTL from the center of the first side of the first lens of the optical lens to the center of the imaging plane of the optical lens, satisfy the following: (d6+d7) / TTL≥0.03.

[0062] Furthermore, the air gap d2 between the first lens and the second lens and the total optical length of the optical lens, that is, the distance TTL from the center of the first side of the first lens to the center of the imaging plane of the optical lens, satisfy the following condition: d2 / TTL≥0.05.

[0063] Furthermore, the Sg value Sag8 corresponding to the maximum light-transmitting aperture of the first side of the fourth lens of the optical lens and the Sg value Sag9 corresponding to the maximum light-transmitting aperture of the second side of the fourth lens of the optical lens satisfy the following condition: 0.1≤|Sag8 / Sag9|≤1.5.

[0064] 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≤15.

[0065] 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≥55.

[0066] Furthermore, the maximum effective aperture D12 of the second side of the sixth lens corresponding to the maximum field of view 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: D12*BFL / H≥5.

[0067] Furthermore, the maximum effective aperture D12 of the second side of the sixth 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: D12 / H≥1.

[0068] Furthermore, the radius of curvature R3 of the first side of the second lens satisfies the following relationship with the total focal length F of the optical lens: R3 / F≤-0.05.

[0069] 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.

[0070] According to the technical solution of the present invention, the optical lens comprises, from the first side to the second side, the following: a first lens with negative optical power, wherein the first side is convex and the second side is concave; a second lens with negative optical power, wherein the first side is concave and the second side is concave; a third lens with positive optical power, wherein the second side is convex; a fourth lens with positive optical power, wherein the first side is convex; a fifth lens with positive optical power, wherein the first side is convex and the second side is convex; and a sixth lens with positive optical power, wherein the first side is convex.

[0071] The first lens has a negative optical power, with a convex first side and a concave second side. The negative optical power of the first lens has a diverging effect on light passing through it. The convex design of the first side can collect as much light as possible from a large field of view into the rear optical system, increasing the amount of light transmitted. The concave design of the second side can quickly diverge large-angle light passing through the first side, which is beneficial for the rear optical system to perform aberration correction on large-angle light and achieve high resolution.

[0072] The second lens with negative optical power has a concave first side and a concave second side. The second lens is a biconcave lens, which has a diverging effect on light and collects the light that has passed through the first lens, so that the subsequent optical system has a larger light receiving surface. Reasonable allocation of optical power is beneficial to reducing aberrations and improving optical performance.

[0073] A third lens with positive optical power has a convex second side. When the first side of the third lens is concave and the second side is convex, the positive optical power lens converges light rays, allowing for adjustment of the light angle. A longer focal length lens helps to smoothly transition the light collected at the front end to the rear, reducing system sensitivity. When both the first and second sides of the third lens are convex, setting the optical power of the third lens to positive also converges light rays, allowing for adjustment of the light angle. A longer focal length lens helps to smoothly transition the light collected at the front end to the rear, reducing system sensitivity.

[0074] A fourth lens with positive optical power has a convex first side. When both the first and second sides of the fourth lens are convex, setting the optical power of the fourth lens to positive helps to compress the light collected at the front end and smooth the transition of light to the rear, reducing system sensitivity and improving resolution. When both the first and second sides of the fourth lens are concave, setting the optical power of the fourth lens to positive helps to compress the light collected at the front end and smooth the transition of light to the rear, reducing light energy loss and also helps to correct aberrations, improving the resolving power of the optical system.

[0075] The fifth lens has positive optical power, with its first side surface being convex and its second side surface being convex. By setting the optical power of the fifth lens to positive, the light collected at the front end is further compressed and the aperture of the rear lens is reduced, while the system CRA is reduced.

[0076] A sixth lens with positive optical power has a convex first side surface. When both the first and second sides of the sixth lens are convex, this biconvex positive optical power lens helps light converge to the imaging plane, reducing the overall optical length. The sixth lens is preferably an aspherical lens, which improves resolving power. When both the first and second sides of the sixth lens are convex, this meniscus positive optical power lens helps light converge smoothly to the imaging plane, achieving a small CRA (Cost Reduction Aspect Ratio), effectively reducing system sensitivity, and improving image quality.

[0077] The optical lens of this application uses six lenses. By optimizing the optical power and surface shape of each lens, the optical lens of this application has at least one beneficial effect such as a large field of view, small FNO, high resolution, miniaturization, and small CRA. Attached Figure Description

[0078] 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:

[0079] Figure 1 A schematic diagram of the structure of an optical lens of Example 1 of the present invention is shown;

[0080] Figure 2 A schematic diagram of the structure of the optical lens of Example 2 of the present invention is shown;

[0081] Figure 3 A schematic diagram of the structure of the optical lens of Example 3 of the present invention is shown;

[0082] Figure 4 A schematic diagram of the structure of the optical lens of Example 4 of the present invention is shown;

[0083] Figure 5 A schematic diagram of the structure of the optical lens of Example 5 of the present invention is shown;

[0084] Figure 6 A schematic diagram of the structure of the optical lens of Example Six of the present invention is shown;

[0085] Figure 7 A schematic diagram of the structure of the optical lens of Example Seven of the present invention is shown;

[0086] Figure 8 A schematic diagram of the structure of the optical lens of Example 8 of the present invention is shown;

[0087] Figure 9 A schematic diagram of the structure of the optical lens of Example 9 of the present invention is shown;

[0088] Figure 10 A schematic diagram of the structure of the optical lens of Example 10 of the present invention is shown.

[0089] The above figures include the following reference numerals:

[0090] 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; L3, Third lens; S5, First side surface of the third lens; S6, Second side surface of the third lens; STO, Aperture stop; 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; L7, Filter; S14, First side surface of the filter; S15, Second side surface of the filter; IMA, Imaging plane. Detailed Implementation

[0091] 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.

[0092] 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.

[0093] 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.

[0094] 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.

[0095] 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.

[0096] 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.

[0097] 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.

[0098] In an exemplary embodiment, the optical lens provided in this application can be used, for example, 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.

[0099] In an exemplary embodiment, the optical lens provided in this application can be used as, for example, a projection lens or a lidar transmitter lens.

[0100] To address the problem that existing optical lenses cannot simultaneously achieve a large field of view, small FNO, high resolution, and miniaturization, this invention provides an optical lens and an electronic device.

[0101] Example 1

[0102] like Figures 1 to 10 As shown, the optical lens comprises, from the first side to the second side, the following: a first lens with negative optical power, the first side of which is convex and the second side of which is concave; a second lens with negative optical power, the first side of which is concave and the second side of which is concave; a third lens with positive optical power, the second side of which is convex; a fourth lens with positive optical power, the first side of which is convex; a fifth lens with positive optical power, the first side of which is convex and the second side of which is convex; and a sixth lens with positive optical power, the first side of which is convex.

[0103] The first lens has a negative optical power, with a convex first side and a concave second side. The negative optical power of the first lens has a diverging effect on light passing through it. The convex design of the first side can collect as much light as possible from a large field of view into the rear optical system, increasing the amount of light transmitted. The concave design of the second side can quickly diverge large-angle light passing through the first side, which is beneficial for the rear optical system to perform aberration correction on large-angle light and achieve high resolution.

[0104] The second lens with negative optical power has a concave first side and a concave second side. The second lens is a biconcave lens, which has a diverging effect on light and collects the light that has passed through the first lens, so that the subsequent optical system has a larger light receiving surface. Reasonable allocation of optical power is beneficial to reducing aberrations and improving optical performance.

[0105] A third lens with positive optical power has a convex second side. When the first side of the third lens is concave and the second side is convex, the positive optical power lens converges light rays, allowing for adjustment of the light angle. A longer focal length lens helps to smoothly transition the light collected at the front end to the rear, reducing system sensitivity. When both the first and second sides of the third lens are convex, setting the optical power of the third lens to positive also converges light rays, allowing for adjustment of the light angle. A longer focal length lens helps to smoothly transition the light collected at the front end to the rear, reducing system sensitivity.

[0106] A fourth lens with positive optical power has a convex first side. When both the first and second sides of the fourth lens are convex, setting the optical power of the fourth lens to positive helps to compress the light collected at the front end and smooth the transition of light to the rear, reducing system sensitivity and improving resolution. When both the first and second sides of the fourth lens are concave, setting the optical power of the fourth lens to positive helps to compress the light collected at the front end and smooth the transition of light to the rear, reducing light energy loss and also helps to correct aberrations, improving the resolving power of the optical system.

[0107] The fifth lens has positive optical power, with its first side surface being convex and its second side surface being convex. By setting the optical power of the fifth lens to positive, the light collected at the front end is further compressed and the aperture of the rear lens is reduced, while the system CRA is reduced.

[0108] A sixth lens with positive optical power has a convex first side surface. When both the first and second sides of the sixth lens are convex, this biconvex positive optical power lens helps light converge to the imaging plane, reducing the overall optical length. The sixth lens is preferably an aspherical lens, which improves resolving power. When both the first and second sides of the sixth lens are convex, this meniscus positive optical power lens helps light converge smoothly to the imaging plane, achieving a small CRA (Cost Reduction Aspect Ratio), effectively reducing system sensitivity, and improving image quality.

[0109] The optical lens of this application uses six lenses. By optimizing the optical power and surface shape of each lens, the optical lens of this application has at least one beneficial effect such as a large field of view, small FNO, high resolution, miniaturization, and small CRA.

[0110] In this embodiment, the first side of the third lens is concave. The third lens with positive focal power has a converging effect on light and can adjust the angle of light. The telephoto lens helps to smoothly transition the light collected at the front end to the rear, reducing system sensitivity.

[0111] In this embodiment, the first side surface of the third lens is convex. Setting the optical power of the third lens to positive allows it to converge light rays and adjust their angle. The telephoto lens helps to smoothly transition the light collected at the front end to the rear, reducing system sensitivity.

[0112] In this embodiment, the second side surface of the fourth lens is convex. By setting the optical power of the fourth lens to positive, it is beneficial to compress the light collected at the front end and make the light transition smoothly to the rear, thereby reducing system sensitivity and improving resolution.

[0113] In this embodiment, the second side surface of the fourth lens is concave. By setting the optical power of the fourth lens to positive, it is beneficial to compress the light collected at the front end and make the light transition smoothly to the rear, thereby reducing light energy loss. At the same time, it is beneficial to correct aberrations and improve the resolving power of the optical system.

[0114] In this embodiment, the second side surface of the sixth lens is convex. A biconvex lens with positive optical power helps light converge to the imaging plane, which is beneficial for reducing the overall optical length. The sixth lens is preferably an aspherical lens, which is beneficial for improving resolving power.

[0115] In this embodiment, the second side of the sixth lens is concave. A lens with a meniscus positive power helps light converge smoothly onto the imaging surface, achieving a small CRA, effectively reducing system sensitivity, and improving image quality.

[0116] In this embodiment, the fourth, fifth, and sixth lenses are aspherical lenses. This arrangement is beneficial for correcting system aberrations and improving resolving power.

[0117] In this embodiment, the optical lens also includes an aperture stop, which is positioned between the third lens and the fourth lens. This arrangement facilitates effective light convergence entering the optical system, reduces the lens aperture at the front end of the optical system, and lowers the system's assembly sensitivity.

[0118] 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 ≤ 0.95. Satisfying this condition helps to ensure a small FNO and increase the amount of light entering the lens. Preferably, F / ENPD ≤ 0.8.

[0119] 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 ≥ 0.03, which is the optical total 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. Satisfying this condition helps ensure the back focal length and facilitates module assembly. Preferably, BFL / TTL ≥ 0.05.

[0120] In this embodiment, the image height H corresponding to the maximum field of view of the optical lens, the maximum field of view FOV 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 condition: D / H / FOV ≤ 0.15. Satisfying this condition ensures a small front aperture, enabling miniaturization. Preferably, D / H / FOV ≤ 0.08. FOV refers to the maximum field of view of the optical lens (FOV and H are related, referring to the field of view corresponding to the image height).

[0121] In this embodiment, the radius of curvature R1 of the first side surface of the first lens and the radius of curvature R2 of the second side surface of the first lens satisfy the condition: R1 / R2≥1.5. Satisfying this condition results in a large difference in the R values ​​between the two sides of the first lens, which is beneficial for the first lens to collect and quickly focus light rays at a larger angle. Preferably, R1 / R2≥2.

[0122] 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≥0.15. Satisfying this condition allows for a smaller front aperture of the optical lens, which is beneficial for reducing the size of the imaging system. Preferably, (F*θ) / D≥0.2.

[0123] 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 ≤ 1. Satisfying this condition allows the focal length and image height to be controlled within a certain range, which is beneficial for improving resolving power. Preferably, 0.3 ≤ F / H ≤ 0.8.

[0124] 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≤2. Satisfying this condition, under the condition of a fixed focal length, provides the optical lens with the characteristics of a large target surface and a small aperture. Preferably, D / H / F≤1.5.

[0125] 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 ≤ -2. Satisfying this condition allows for a reasonable allocation of the focal length of the first lens, which is beneficial for light rays with a large field of view to enter the optical system, reducing aberrations and improving image quality. Preferably, F1 / F ≤ -3.

[0126] In this embodiment, the focal length F2 of the second lens satisfies the condition F2 / F ≤ -1 with the total focal length F of the optical lens. Satisfying this condition allows for a more reasonable allocation of the focal length of the second lens, which helps to smooth the light transition, improves light collection, ensures sufficient light transmission, and enhances image quality. Preferably, F2 / F ≤ -2.

[0127] In this embodiment, the focal length F3 of the third lens satisfies the condition F3 / F≥3 with the total focal length F of the optical lens. Satisfying this condition controls the light path, helps the light transition smoothly to the rear, reduces sensitivity, and improves image quality. Preferably, F3 / F≥4.

[0128] In this embodiment, the focal length F1 of the first lens and the focal length F2 of the second lens satisfy the condition: 0.6 ≤ F1 / F2 ≤ 1.8. Satisfying this condition ensures that the focal lengths of the first and second lenses are similar, which helps to smooth the light transition and improves image quality. Preferably, 0.7 ≤ F1 / F2 ≤ 1.6.

[0129] In this embodiment, the radius of curvature R3 of the first side surface of the second lens and the radius of curvature R4 of the second side surface of the second lens satisfy the condition: -2≤R3 / R4≤-0.3. Satisfying this condition ensures that the R values ​​of the two surfaces of the second lens are close, which is beneficial for the rapid focusing of large-angle peripheral light rays entering through the first lens, thus improving image quality. Preferably, -1.6≤R3 / R4≤-0.4.

[0130] In this embodiment, the air gap d6 between the third lens and the aperture stop, the air gap d7 between the aperture stop and the fourth 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 to the center of the imaging plane of the optical lens, satisfy the condition: (d6+d7) / TTL≥0.03. Satisfying this condition controls the smooth transition of light to the rear, reducing sensitivity and improving image quality. Preferably, (d6+d7) / TTL≥0.05.

[0131] In this embodiment, the air gap d2 between the first lens and 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 to the center of the imaging plane of the optical lens, satisfy the condition: d2 / TTL ≥ 0.05. Satisfying this condition allows for a smoother transition of light to the rear system, reducing sensitivity and improving image quality. Preferably, d2 / TTL ≥ 0.08.

[0132] In this embodiment, the Sg value Sag8 corresponding to the maximum light-transmitting aperture of the first side of the fourth lens of the optical lens and the Sg value Sag9 corresponding to the maximum light-transmitting aperture of the second side of the fourth lens of the optical lens satisfy the condition: 0.1 ≤ |Sag8 / Sag9| ≤ 1.5. Satisfying this condition controls the entry of large field-of-view light into the subsequent optical system, which is beneficial for improving illumination. Preferably, 0.12 ≤ |Sag8 / Sag9| ≤ 1.2.

[0133] In this embodiment, the focal length F6 of the sixth lens satisfies the condition F6 / F≤15 with the total focal length F of the optical lens. Meeting this condition and setting the focal length of the sixth lens appropriately helps in light collection and ensures sufficient light transmission. Preferably, F6 / F≤10.

[0134] In this embodiment, the effective aperture diameter (DST) of the aperture stop and the total focal length (F) of the optical lens satisfy the condition: DST / F ≥ 2. Satisfying this condition helps ensure a large ratio between the effective aperture diameter and the total focal length, which is beneficial for achieving a small focal length zero (FNO) and increasing the amount of light entering the lens. Preferably, DST / F ≥ 3.

[0135] 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 following condition: (FOV×F) / H≥55. Satisfying this condition ensures a large field of view under the same imaging plane and image height. Preferably, (FOV×F) / H≥58. FOV refers to the maximum field of view of the optical lens (FOV and H are related, representing the field of view corresponding to the image height).

[0136] In this embodiment, the maximum effective aperture D12 of the second side of the sixth lens corresponding to the maximum field of view 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 condition: D12*BFL / H≥5. Satisfying this condition ensures a long back focal length under the same imaging plane and image height, which is beneficial for achieving a small CRA (Cost Reduction Aspect Ratio). Preferably, D12*BFL / H≥8.

[0137] In this embodiment, the maximum effective aperture D12 of the second side of the sixth lens corresponding to the maximum field of view of the optical lens satisfies the condition D12 / H ≥ 1 with respect to the image height H corresponding to the maximum field of view of the optical lens. Satisfying this condition, under the same imaging plane and image height, a larger aperture of the second side of the last lens is beneficial for the principal ray to exit parallel onto the imaging plane, thus facilitating the achievement of a smaller CRA (Current Radiation Aspect Ratio). Preferably, D12 / H ≥ 1.5.

[0138] In this embodiment, the radius of curvature R3 of the first side surface of the second lens satisfies the condition R3 / F ≤ -0.05 with respect to the focal length F of the optical lens. Satisfying this condition allows for a reasonable setting of the radius of curvature of the second lens, which facilitates a smoother light transition and reduces sensitivity. Preferably, R3 / F ≤ -0.1.

[0139] Example 2

[0140] like Figures 1 to 10 As shown, the optical lens, from the first side to the second side, 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 effective aperture diameter (DST) of the aperture stop and the total focal length (F) of the optical lens satisfy the condition: DST / F ≥ 2. Satisfying this condition helps ensure a large ratio between the effective aperture diameter and the total focal length, which is beneficial for achieving a small FNO and increasing the amount of light entering the lens. Preferably, DST / F ≥ 3.

[0141] In this embodiment, the first side of the first lens is convex, and the second side is concave. The first lens has a negative optical power and diverges light passing through it. The convex design of the first side can collect as much light as possible from a large field of view into the rear optical system, increasing the amount of light transmitted. The concave design of the second side can quickly diverge large-angle light passing through the first side, which is beneficial for the rear optical system to perform aberration correction on large-angle light and achieve high resolution.

[0142] In this embodiment, the first side surface of the second lens is concave, and the second side surface is concave. The second lens is a biconcave lens, which has a diverging effect on light and collects the light passing through the first lens, so that the subsequent optical system has a larger light receiving surface. Reasonable allocation of optical power is beneficial to reducing aberrations and improving optical performance.

[0143] In this embodiment, the first side of the third lens is concave, and the second side is convex. The third lens with positive focal power has a converging effect on light and can adjust the angle of light. The telephoto lens helps to smoothly transition the light collected at the front end to the rear, reducing system sensitivity.

[0144] In this embodiment, the first side surface of the third lens is convex, and the second side surface is also convex. The third lens is set to a positive optical power, which converges light rays and allows for adjustment of the light angle. The telephoto lens helps to smoothly transition the light collected at the front end to the rear, reducing system sensitivity.

[0145] In this embodiment, the first side surface of the fourth lens is convex, and the second side surface is also convex. By setting the optical power of the fourth lens to positive, it is beneficial to compress the light collected at the front end and make the light transition smoothly to the rear, thereby reducing system sensitivity and improving resolution.

[0146] In this embodiment, the first side of the fourth lens is convex, and the second side is concave. By setting the optical power of the fourth lens to positive, it is beneficial to compress the light collected at the front end and make the light transition smoothly to the rear, reducing light energy loss. At the same time, it is beneficial to correct aberrations and improve the resolving power of the optical system.

[0147] In this embodiment, the first side surface of the fifth lens is convex, and the second side surface is convex. By setting the optical power of the fifth lens to positive, the light collected at the front end is further compressed and the aperture of the rear lens is reduced, thereby reducing the system CRA.

[0148] In this embodiment, the first side surface of the sixth lens is convex, and the second side surface is also convex. A biconvex lens with positive optical power helps light converge to the imaging plane, which is beneficial for reducing the overall optical length. The sixth lens is preferably an aspherical lens, which helps improve resolving power.

[0149] In this embodiment, the first side of the sixth lens is convex, and the second side is concave. A lens with meniscus positive power helps light converge smoothly onto the imaging plane, achieving a small CRA (Collateral Resonance Aspect Ratio), effectively reducing system sensitivity, and improving image quality.

[0150] The optical lens of this application uses six lenses. By optimizing the optical power and surface shape of each lens, the optical lens of this application has at least one beneficial effect such as a large field of view, small FNO, high resolution, miniaturization, and small CRA.

[0151] In this embodiment, the fourth, fifth, and sixth lenses are aspherical lenses. This arrangement is beneficial for correcting system aberrations and improving resolving power.

[0152] In this embodiment, the optical lens also includes an aperture stop, which is positioned between the third lens and the fourth lens. This arrangement facilitates effective light convergence entering the optical system, reduces the lens aperture at the front end of the optical system, and lowers the system's assembly sensitivity.

[0153] 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 ≤ 0.95. Satisfying this condition helps to ensure a small FNO and increase the amount of light entering the lens. Preferably, F / ENPD ≤ 0.8.

[0154] 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 ≥ 0.03, which is the optical total 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. Satisfying this condition helps ensure the back focal length and facilitates module assembly. Preferably, BFL / TTL ≥ 0.05.

[0155] In this embodiment, the image height H corresponding to the maximum field of view of the optical lens, the maximum field of view FOV 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 condition: D / H / FOV ≤ 0.15. Satisfying this condition ensures a small front aperture, enabling miniaturization. Preferably, D / H / FOV ≤ 0.08. FOV refers to the maximum field of view of the optical lens (FOV and H are related, referring to the field of view corresponding to the image height).

[0156] In this embodiment, the radius of curvature R1 of the first side surface of the first lens and the radius of curvature R2 of the second side surface of the first lens satisfy the condition: R1 / R2≥1.5. Satisfying this condition results in a large difference in the R values ​​between the two sides of the first lens, which is beneficial for the first lens to collect and quickly focus light rays at a larger angle. Preferably, R1 / R2≥2.

[0157] 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≥0.15. Satisfying this condition allows for a smaller front aperture of the optical lens, which is beneficial for reducing the size of the imaging system. Preferably, (F*θ) / D≥0.2.

[0158] 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 ≤ 1. Satisfying this condition allows the focal length and image height to be controlled within a certain range, which is beneficial for improving resolving power. Preferably, 0.3 ≤ F / H ≤ 0.8.

[0159] 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≤2. Satisfying this condition, under the condition of a fixed focal length, provides the optical lens with the characteristics of a large target surface and a small aperture. Preferably, D / H / F≤1.5.

[0160] 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 ≤ -2. Satisfying this condition allows for a reasonable allocation of the focal length of the first lens, which is beneficial for light rays with a large field of view to enter the optical system, reducing aberrations and improving image quality. Preferably, F1 / F ≤ -3.

[0161] In this embodiment, the focal length F2 of the second lens satisfies the condition F2 / F ≤ -1 with the total focal length F of the optical lens. Satisfying this condition allows for a more reasonable allocation of the focal length of the second lens, which helps to smooth the light transition, improves light collection, ensures sufficient light transmission, and enhances image quality. Preferably, F2 / F ≤ -2.

[0162] In this embodiment, the focal length F3 of the third lens satisfies the condition F3 / F≥3 with the total focal length F of the optical lens. Satisfying this condition controls the light path, helps the light transition smoothly to the rear, reduces sensitivity, and improves image quality. Preferably, F3 / F≥4.

[0163] In this embodiment, the focal length F1 of the first lens and the focal length F2 of the second lens satisfy the condition: 0.6 ≤ F1 / F2 ≤ 1.8. Satisfying this condition ensures that the focal lengths of the first and second lenses are similar, which helps to smooth the light transition and improves image quality. Preferably, 0.7 ≤ F1 / F2 ≤ 1.6.

[0164] In this embodiment, the radius of curvature R3 of the first side surface of the second lens and the radius of curvature R4 of the second side surface of the second lens satisfy the condition: -2≤R3 / R4≤-0.3. Satisfying this condition ensures that the R values ​​of the two surfaces of the second lens are close, which is beneficial for the rapid focusing of large-angle peripheral light rays entering through the first lens, thus improving image quality. Preferably, -1.6≤R3 / R4≤-0.4.

[0165] In this embodiment, the air gap d6 between the third lens and the aperture stop, the air gap d7 between the aperture stop and the fourth 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 to the center of the imaging plane of the optical lens, satisfy the condition: (d6+d7) / TTL≥0.03. Satisfying this condition controls the smooth transition of light to the rear, reducing sensitivity and improving image quality. Preferably, (d6+d7) / TTL≥0.05.

[0166] In this embodiment, the air gap d2 between the first lens and 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 to the center of the imaging plane of the optical lens, satisfy the condition: d2 / TTL ≥ 0.05. Satisfying this condition allows for a smoother transition of light to the rear system, reducing sensitivity and improving image quality. Preferably, d2 / TTL ≥ 0.08.

[0167] In this embodiment, the Sg value Sag8 corresponding to the maximum light-transmitting aperture of the first side of the fourth lens of the optical lens and the Sg value Sag9 corresponding to the maximum light-transmitting aperture of the second side of the fourth lens of the optical lens satisfy the condition: 0.1 ≤ |Sag8 / Sag9| ≤ 1.5. Satisfying this condition controls the entry of large field-of-view light into the subsequent optical system, which is beneficial for improving illumination. Preferably, 0.12 ≤ |Sag8 / Sag9| ≤ 1.2.

[0168] In this embodiment, the focal length F6 of the sixth lens satisfies the condition F6 / F≤15 with the total focal length F of the optical lens. Meeting this condition and setting the focal length of the sixth lens appropriately helps in light collection and ensures sufficient light transmission. Preferably, F6 / F≤10.

[0169] 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 following condition: (FOV×F) / H≥55. Satisfying this condition ensures a large field of view under the same imaging plane and image height. Preferably, (FOV×F) / H≥58. FOV refers to the maximum field of view of the optical lens (FOV and H are related, representing the field of view corresponding to the image height).

[0170] In this embodiment, the maximum effective aperture D12 of the second side of the sixth lens corresponding to the maximum field of view 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 condition: D12*BFL / H≥5. Satisfying this condition ensures a long back focal length under the same imaging plane and image height, which is beneficial for achieving a small CRA (Cost Reduction Aspect Ratio). Preferably, D12*BFL / H≥8.

[0171] In this embodiment, the maximum effective aperture D12 of the second side of the sixth lens corresponding to the maximum field of view of the optical lens satisfies the condition D12 / H ≥ 1 with respect to the image height H corresponding to the maximum field of view of the optical lens. Satisfying this condition, under the same imaging plane and image height, a larger aperture of the second side of the last lens is beneficial for the principal ray to exit parallel onto the imaging plane, thus facilitating the achievement of a smaller CRA (Current Radiation Aspect Ratio). Preferably, D12 / H ≥ 1.5.

[0172] In this embodiment, the radius of curvature R3 of the first side surface of the second lens satisfies the condition R3 / F ≤ -0.05 with respect to the focal length F of the optical lens. Satisfying this condition allows for a reasonable setting of the radius of curvature of the second lens, which facilitates a smoother light transition and reduces sensitivity. Preferably, R3 / F ≤ -0.1.

[0173] Optionally, the aforementioned optical lens may also include a filter for correcting color deviation and a protective glass for protecting the photosensitive element located on the imaging surface.

[0174] The optical lens in this application can employ multiple lens elements, such as the six elements mentioned above. This application does not specifically limit the number of spherical and aspherical lenses; the number of aspherical lenses can be increased when image quality is a primary concern. Aspherical lenses are characterized by a continuously changing curvature from the lens center to the lens periphery. Unlike spherical lenses, which have a constant curvature from the lens center to the lens periphery, aspherical lenses have superior curvature radius characteristics, offering advantages in improving distortion and astigmatism. By using aspherical lenses, aberrations occurring during image formation can be eliminated as much as possible, thereby improving image quality.

[0175] 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 can prevent lens blurring caused by high and low temperature variations in the operating environment, thus avoiding impact on 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 entirely 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.

[0176] 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.

[0177] 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.

[0178] 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.

[0179] It should be noted that any of the examples one through ten below are applicable to all embodiments of this application.

[0180] Example 1

[0181] like Figure 1 The diagram shown is a schematic of the optical lens structure of Example 1.

[0182] 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, a third lens L3, an aperture stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a filter L7, and an imaging surface IMA.

[0183] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has negative optical power, its first side surface S3 is concave, and its second side surface S4 is concave. The third lens L3 has positive optical power, its first side surface S5 is concave, and its second side surface S6 is convex. The fourth lens L4 has positive optical power, its first side surface S8 is convex, and its second side surface S9 is concave. The fifth lens L5 has 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. The filter L7 has a first side surface S14 and a second side surface S15. Light from the first side passes sequentially through surfaces S1 to S15 and is finally imaged onto the imaging plane IMA.

[0184] In this example, the total effective focal length F of the optical lens is 3.599mm, the maximum field of view (FOV) of the optical lens is 126°, and the total length (TTL) of the optical lens is 53.845mm.

[0185] 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).

[0186] 1 60.352 1.315 1.80 46.57 2 9.245 7.501 3 -11.455 1.215 1.62 60.37 4 15.521 2.840 5 -142.066 3.355 1.90 31.32 6 -16.186 3.125 STO Infinity 1.930 8 18.219 5.350 1.59 61.16 9 44.165 4.804 10 16.717 7.192 1.50 81.59 11 -17.316 3.645 12 12.635 4.611 1.74 49.34 13 246.362 2.192 14 Infinity 1.096 1.52 64.17 15 Infinity 3.674 IMA / /

[0187] Table 1 shows that the surface shape of each aspherical lens in Example 1 can be defined using, but is not limited to, the following aspherical formulas:

[0188]

[0189] Where x is the distance vector from the vertex of the aspherical surface at a height h along the optical axis; c is the paraxial curvature of the aspherical surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient; A, B, C, D, E, F, and G are all higher-order coefficients. Table 2 below shows the conic coefficient k and the higher-order coefficients A, B, C, D, E, F, and G that can be used for the aspherical lens surfaces S8, S9, S10, S11, S12, and S13 in Example 1.

[0190]

[0191] Table 2

[0192] Example 2

[0193] like Figure 2 The image shows an optical lens of Example 2 of this application. For the sake of brevity, descriptions similar to those in Example 1 will be omitted in this example and the following examples. Figure 2 A schematic diagram of the optical lens structure of Example 2 is shown.

[0194] 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, a third lens L3, an aperture stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a filter L7, and an imaging surface IMA.

[0195] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has negative optical power, its first side surface S3 is concave, and its second side surface S4 is concave. The third lens L3 has positive optical power, its first side surface S5 is concave, and its second side surface S6 is convex. The fourth lens L4 has positive optical power, its first side surface S8 is convex, and its second side surface S9 is concave. The fifth lens L5 has 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. The filter L7 has a first side surface S14 and a second side surface S15. Light from the first side passes sequentially through surfaces S1 to S15 and is finally imaged onto the imaging plane IMA.

[0196] In this example, the total effective focal length F of the optical lens is 3.137mm, the maximum field of view (FOV) of the optical lens is 126°, and the total length (TTL) of the optical lens is 50.002mm.

[0197] 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).

[0198] 1 27.340 1.012 1.80 46.57 2 7.736 7.307 3 -11.711 1.010 1.62 60.37 4 15.944 4.440 5 -469.136 4.273 1.90 31.32 6 -16.025 9.713 STO Infinity -0.726 8 13.985 3.668 1.59 61.16 9 39.862 2.850 10 16.700 6.172 1.50 81.59 11 -44.587 0.848 12 11.163 3.831 1.74 49.34 13 246.084 1.803 14 Infinity 0.902 1.52 64.17 15 Infinity 2.899 IMA / /

[0199] Table 3

[0200] Table 4 below shows the conic coefficient k and the coefficients A, B, C, D, E, F, and G of each higher-order term that can be used for the aspherical lens surfaces S8, S9, S10, S11, S12, and S13 in Example 2.

[0201]

[0202] Table 4

[0203] Example 3

[0204] like Figure 3 As shown, an optical lens of Example 3 of this application is described.

[0205] 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, a third lens L3, an aperture stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a filter L7, and an imaging surface 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 concave, and its second side surface S4 is concave. The third lens L3 has positive optical power, its first side surface S5 is concave, and its second side surface S6 is convex. The fourth lens L4 has positive optical power, its first side surface S8 is convex, and its second side surface S9 is concave. The fifth lens L5 has 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 convex. The filter L7 has a first side surface S14 and a second side surface S15. Light from the first side passes sequentially through surfaces S1 to S15 and is finally imaged onto the imaging plane IMA.

[0207] In this example, the total effective focal length F of the optical lens is 3.066mm, the maximum field of view (FOV) of the optical lens is 126°, and the total length (TTL) of the optical lens is 50.055mm.

[0208] 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).

[0209]

[0210]

[0211] Table 5

[0212] Table 6 below shows the conic coefficient k and the coefficients A, B, C, D, E, F, and G of each higher-order term that can be used for the aspherical lens surfaces S8, S9, S10, S11, S12, and S13 in Example 3.

[0213]

[0214] Table 6

[0215] Example 4

[0216] like Figure 4 As shown, the optical lens of Example 4 of this application is described.

[0217] 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, a third lens L3, an aperture stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a filter L7, and an imaging surface IMA.

[0218] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has negative optical power, its first side surface S3 is concave, and its second side surface S4 is concave. The third lens L3 has positive optical power, its first side surface S5 is concave, and its second side surface S6 is convex. The fourth lens L4 has positive optical power, its first side surface S8 is convex, and its second side surface S9 is concave. The fifth lens L5 has 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 convex. The filter L7 has a first side surface S14 and a second side surface S15. Light from the first side passes sequentially through surfaces S1 to S15 and is finally imaged onto the imaging plane IMA.

[0219] In this example, the total effective focal length F of the optical lens is 3.387mm, the maximum field of view (FOV) of the optical lens is 126°, and the total length (TTL) of the optical lens is 55.061mm.

[0220] 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).

[0221]

[0222]

[0223] Table 7

[0224] Table 8 below shows the conic coefficient k and the coefficients A, B, C, D, E, F, and G of each higher-order term that can be used for the aspherical lens surfaces S8, S9, S10, S11, S12, and S13 in Example 4.

[0225]

[0226] Table 8

[0227] Example 5

[0228] like Figure 5 As shown, an optical lens of Example 5 of this application is described.

[0229] 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, a third lens L3, an aperture stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a filter L7, and an imaging surface IMA.

[0230] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has negative optical power, its first side surface S3 is concave, and its second side surface S4 is concave. The third lens L3 has positive optical power, its first side surface S5 is convex, and its second side surface S6 is convex. The fourth lens L4 has positive optical power, its first side surface S8 is convex, and its second side surface S9 is concave. The fifth lens L5 has 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. The filter L7 has a first side surface S14 and a second side surface S15. Light from the first side passes sequentially through surfaces S1 to S15 and is finally imaged onto the imaging plane IMA.

[0231] In this example, the total effective focal length F of the optical lens is 3.397mm, the maximum field of view (FOV) of the optical lens is 126°, and the total length (TTL) of the optical lens is 53.607mm.

[0232] 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).

[0233] 1 28.462 1.121 1.80 46.57 2 8.258 7.903 3 -19.209 1.119 1.62 60.37 4 12.737 5.851 5 22.718 5.306 1.90 31.32 6 -66.122 8.480 STO Infinity -0.353 8 18.846 3.643 1.59 61.16 9 153.809 2.954 10 18.639 6.454 1.50 81.59 11 -37.797 0.773 12 12.493 4.360 1.74 49.34 13 511.383 1.998 14 Infinity 0.999 1.52 64.17 15 Infinity 3.000 IMA / /

[0234] Table 9

[0235] Table 10 below shows the conic coefficient k and the coefficients A, B, C, D, E, F, and G of each higher-order term that can be used for the aspherical lens surfaces S8, S9, S10, S11, S12, and S13 in Example 5.

[0236]

[0237] Table 10

[0238] Example 6

[0239] like Figure 6 As shown, an optical lens of Example Six of this application is described.

[0240] 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, a third lens L3, an aperture stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a filter L7, and an imaging surface IMA.

[0241] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has negative optical power, its first side surface S3 is concave, and its second side surface S4 is concave. The third lens L3 has positive optical power, its first side surface S5 is convex, and its second side surface S6 is convex. The fourth lens L4 has positive optical power, its first side surface S8 is convex, and its second side surface S9 is concave. The fifth lens L5 has 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. The filter L7 has a first side surface S14 and a second side surface S15. Light from the first side passes sequentially through surfaces S1 to S15 and is finally imaged onto the imaging plane IMA.

[0242] In this example, the total effective focal length F of the optical lens is 3.396mm, the maximum field of view (FOV) of the optical lens is 126°, and the total length (TTL) of the optical lens is 53.618mm.

[0243] 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).

[0244] 1 28.667 1.121 1.80 46.57 2 8.270 7.866 3 -19.316 1.122 1.62 60.37 4 12.723 5.906 5 23.668 5.260 1.90 31.32 6 -59.495 8.328 STO Infinity -0.234 8 19.428 3.622 1.59 61.16 9 149.486 2.941 10 18.342 6.436 1.50 81.59 11 -38.910 0.766 12 12.297 4.490 1.74 49.34 13 249.250 1.998 14 Infinity 0.999 1.52 64.17 15 Infinity 2.999 IMA / /

[0245] Table 11

[0246] Table 12 below shows the conic coefficient k and the coefficients A, B, C, D, E, F, and G of each higher-order term that can be used for the aspherical lens surfaces S8, S9, S10, S11, S12, and S13 in Example Six.

[0247]

[0248]

[0249] Table 12

[0250] Example 7

[0251] like Figure 7 As shown, an optical lens of Example Seven of this application is described.

[0252] 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, a third lens L3, an aperture stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a filter L7, and an imaging surface 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 concave, and its second side surface S4 is concave. The third lens L3 has positive optical power, its first side surface S5 is convex, and its second side surface S6 is convex. The fourth lens L4 has positive optical power, its first side surface S8 is convex, and its second side surface S9 is concave. The fifth lens L5 has 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 convex. The filter L7 has a first side surface S14 and a second side surface S15. Light from the first side passes sequentially through surfaces S1 to S15 and is finally imaged onto the imaging plane IMA.

[0254] In this example, the total effective focal length F of the optical lens is 3.364mm, the maximum field of view (FOV) of the optical lens is 126°, and the total length (TTL) of the optical lens is 46.765mm.

[0255] 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).

[0256]

[0257]

[0258] Table 13

[0259] Table 14 below shows the conic coefficient k and the coefficients A, B, C, D, E, F, and G of each higher-order term that can be used for the aspherical lens surfaces S8, S9, S10, S11, S12, and S13 in Example 7.

[0260]

[0261] Table 14

[0262] Example 8

[0263] like Figure 8 As shown, an optical lens of Example 8 of this application is described.

[0264] 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, a third lens L3, an aperture stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a filter L7, and an imaging surface 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 concave, and its second side surface S4 is concave. The third lens L3 has positive optical power, its first side surface S5 is convex, and its second side surface S6 is convex. The fourth lens L4 has positive optical power, its first side surface S8 is convex, and its second side surface S9 is concave. The fifth lens L5 has 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 convex. The filter L7 has a first side surface S14 and a second side surface S15. Light from the first side passes sequentially through surfaces S1 to S15 and is finally imaged onto the imaging plane IMA.

[0266] In this example, the total effective focal length F of the optical lens is 3.398mm, the maximum field of view (FOV) of the optical lens is 126°, and the total length (TTL) of the optical lens is 55.000mm.

[0267] 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).

[0268]

[0269]

[0270] Table 15

[0271] Table 16 below shows the conic coefficient k and the coefficients A, B, C, D, E, F, and G of each higher-order term that can be used for the aspherical lens surfaces S8, S9, S10, S11, S12, and S13 in Example 8.

[0272]

[0273] Table 16

[0274] Example 9

[0275] like Figure 9 As shown, an optical lens of Example Nine of this application is described.

[0276] like Figure 9As shown, the optical lens, from the first side to the second side, includes: a first lens L1, a second lens L2, a third lens L3, an aperture stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a filter L7, and an imaging surface IMA.

[0277] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has negative optical power, its first side surface S3 is concave, and its second side surface S4 is concave. The third lens L3 has positive optical power, its first side surface S5 is concave, and its second side surface S6 is convex. The fourth lens L4 has positive optical power, its first side surface S8 is convex, and its second side surface S9 is convex. The fifth lens L5 has positive optical power, its first side surface S10 is convex, and its second side surface S11 is convex. The sixth lens L6 has positive optical power, its first side surface S12 is convex, and its second side surface S13 is concave. The filter L7 has a first side surface S14 and a second side surface S15. Light from the first side passes sequentially through surfaces S1 to S15 and is finally imaged onto the imaging plane IMA.

[0278] In this example, the total effective focal length F of the optical lens is 3.462mm, the maximum field of view (FOV) of the optical lens is 126°, and the total length (TTL) of the optical lens is 63.650mm.

[0279] 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).

[0280] 1 49.712 1.194 1.80 46.57 2 9.614 7.660 3 -13.903 0.906 1.62 60.37 4 22.457 6.334 5 -206.672 5.029 1.90 31.32 6 -20.647 15.408 STO Infinity -1.678 8 24.715 5.744 1.59 61.16 9 -47.051 5.286 10 16.729 8.330 1.50 81.59 11 -33.287 0.120 12 15.169 3.364 1.74 49.34 13 37.391 1.990 14 Infinity 0.995 1.52 64.17 15 Infinity 2.968 IMA / /

[0281] Table 17

[0282] Table 18 below shows the conic coefficient k and the coefficients A, B, C, D, E, F, and G of each higher-order term that can be used for the aspherical lens surfaces S8, S9, S10, S11, S12, and S13 in Example 9.

[0283]

[0284] Table 18

[0285] Example 10

[0286] like Figure 10 As shown, an optical lens of Example 10 of this application is described.

[0287] like Figure 10As shown, the optical lens, from the first side to the second side, includes: a first lens L1, a second lens L2, a third lens L3, an aperture stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a filter L7, and an imaging surface IMA.

[0288] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has negative optical power, its first side surface S3 is concave, and its second side surface S4 is concave. The third lens L3 has positive optical power, its first side surface S5 is concave, and its second side surface S6 is convex. The fourth lens L4 has positive optical power, its first side surface S8 is convex, and its second side surface S9 is convex. The fifth lens L5 has positive optical power, its first side surface S10 is convex, and its second side surface S11 is convex. The sixth lens L6 has positive optical power, its first side surface S12 is convex, and its second side surface S13 is concave. The filter L7 has a first side surface S14 and a second side surface S15. Light from the first side passes sequentially through surfaces S1 to S15 and is finally imaged onto the imaging plane IMA.

[0289] In this example, the total effective focal length F of the optical lens is 3.396mm, the maximum field of view (FOV) of the optical lens is 126°, and the total length (TTL) of the optical lens is 62.523mm.

[0290] 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).

[0291] 1 49.712 1.194 1.80 46.57 2 8.734 7.447 3 -18.927 0.906 1.62 60.37 4 19.490 6.326 5 -106.501 4.947 1.90 31.32 6 -20.171 13.900 STO Infinity -1.422 8 24.285 5.847 1.59 61.16 9 -54.650 4.945 10 17.166 8.330 1.50 81.59 11 -32.254 0.120 12 15.199 3.999 1.74 49.34 13 38.495 1.990 14 Infinity 0.995 1.52 64.17 15 Infinity 2.999 IMA / /

[0292] Table 19

[0293] Table 20 below shows the conic coefficient k and the coefficients A, B, C, D, E, F, and G of each higher-order term that can be used for the aspherical lens surfaces S8, S9, S10, S11, S12, and S13 in Example 10.

[0294]

[0295]

[0296] Table 20 summarizes that Examples 1 through 2 completely satisfy the relationships shown in Table 21.

[0297]

[0298]

[0299] Table 21

[0300] 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).

[0301]

[0302]

[0303] Table 22

[0304] 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.

[0305] 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.

[0306] 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.

[0307] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An optical lens, characterized in that, From the first side to the second side, the following are included in sequence: A first lens with negative optical power has a first side surface that is convex and a second side surface that is concave. A second lens with negative optical power has a first concave side and a second concave side. The third lens has positive optical power, and its second side surface is convex. The fourth lens with positive optical power has a convex first side surface; A fifth lens with positive optical power has a convex first side and a convex second side. The sixth lens, which has positive optical power, has a convex first side surface; The optical lens contains a total of six lenses with optical power. The total focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy the following condition: 0.680≤F / ENPD≤0.

95.

2. The optical lens according to claim 1, characterized in that, The first side surface of the third lens is concave.

3. The optical lens according to claim 1, characterized in that, The first side surface of the third lens is convex.

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

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

6. The optical lens according to claim 1, characterized in that, The second side surface of the sixth lens is convex.

7. The optical lens according to claim 1, characterized in that, The second side surface of the sixth lens is concave.

8. The optical lens according to claim 1, characterized in that, The fourth lens, the fifth lens, and the sixth lens are aspherical lenses.

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

10. The optical lens according to any one of claims 1 to 9, characterized in that, The optical back focal length of the optical lens, i.e., the center distance BFL from the second side center of the last lens of the optical lens to the center of the imaging plane, and the optical total length of the optical lens, i.e., the center distance TTL from the first side center of the first lens of the optical lens to the center of the imaging plane of the optical lens, satisfy the following condition: BFL / TTL≥0.

03.

11. The optical lens according to any one of claims 1 to 9, characterized in that, The image height H corresponding to the maximum field of view of the optical lens, the maximum field of view FOV 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 condition: D / H / FOV≤0.

15.

12. The optical lens according to any one of claims 1 to 9, characterized in that, The radius of curvature R1 of the first side surface of the first lens and the radius of curvature R2 of the second side surface of the first lens satisfy the following condition: R1 / R2≥1.

5.

13. The optical lens according to any one of claims 1 to 9, characterized in that, 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.

15.

14. The optical lens according to any one of claims 1 to 9, characterized in that, The total focal length F of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: 0.1≤F / H≤1.

15. The optical lens according to any one of claims 1 to 9, characterized in that, The maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the total focal length F of the optical lens satisfy the following condition: D / H / F≤2.

16. The optical lens according to any one of claims 1 to 9, characterized in that, The focal length F1 of the first lens satisfies the following relationship with the total focal length F of the optical lens: F1 / F≤-2.

17. The optical lens according to any one of claims 1 to 9, characterized in that, The focal length F2 of the second lens satisfies the following relationship with the total focal length F of the optical lens: F2 / F≤-1.

18. The optical lens according to any one of claims 1 to 9, characterized in that, The focal length F3 of the third lens satisfies the following relationship with the total focal length F of the optical lens: F3 / F≥3.

19. The optical lens according to any one of claims 1 to 9, characterized in that, The focal length F1 of the first lens and the focal length F2 of the second lens satisfy the following condition: 0.6 ≤ F1 / F2 ≤ 1.

8.

20. The optical lens according to any one of claims 1 to 9, characterized in that, The radius of curvature R3 of the first side surface of the second lens and the radius of curvature R4 of the second side surface of the second lens satisfy the following condition: -2≤R3 / R4≤-0.

3.

21. The optical lens according to any one of claims 1 to 9, characterized in that, The air gap d6 between the third lens and the aperture stop, the air gap d7 between the aperture stop and the fourth lens, and the total optical length of the optical lens, i.e. the distance TTL from the center of the first side of the first lens of the optical lens to the center of the imaging plane of the optical lens, satisfy the following: (d6+d7) / TTL≥0.

03.

22. The optical lens according to any one of claims 1 to 9, characterized in that, The air gap d2 between the first lens and 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 to the center of the imaging plane of the optical lens, satisfy the following condition: d2 / TTL≥0.

05.

23. The optical lens according to any one of claims 1 to 9, characterized in that, The Sg value Sag8 corresponding to the maximum light-transmitting aperture of the first side of the fourth lens of the optical lens and the Sg value Sag9 corresponding to the maximum light-transmitting aperture of the second side of the fourth lens of the optical lens satisfy the following condition: 0.1≤|Sag8 / Sag9|≤1.

5.

24. The optical lens according to any one of claims 1 to 9, characterized in that, The focal length F6 of the sixth lens satisfies the following relationship with the total focal length F of the optical lens: F6 / F≤15.

25. The optical lens according to any one of claims 1 to 9, characterized in that, The effective aperture diameter DST of the aperture and the total focal length F of the optical lens satisfy the following condition: DST / F≥2.

26. The optical lens according to any one of claims 1 to 9, characterized in that, The maximum field of view (FOV) of the optical lens, the total focal length (F) of the optical lens, and the image height (H) corresponding to the maximum field of view of the optical lens satisfy the following relationship: (FOV×F) / H≥55.

27. The optical lens according to any one of claims 1 to 9, characterized in that, The maximum effective aperture D12 of the second side of the sixth lens corresponding to the maximum field of view 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: D12*BFL / H≥5.

28. The optical lens according to any one of claims 1 to 9, characterized in that, The maximum effective aperture D12 of the second side of the sixth 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: D12 / H≥1.

29. The optical lens according to any one of claims 1 to 9, characterized in that, The radius of curvature R3 of the first side of the second lens satisfies the following relationship with the total focal length F of the optical lens: R3 / F≤-0.

05.

30. An optical lens, characterized in that, From the first side to the second side, the following are included in sequence: A first lens with negative optical power, wherein the first side surface of the first lens is convex and the second side surface is concave; A second lens with negative optical power, wherein the first side surface of the second lens is concave and the second side surface is concave; The third lens has positive optical power, and its second side surface is convex. The fourth lens with positive optical power has a convex first side surface; A fifth lens with positive optical power, wherein the first side surface of the fifth lens is convex and the second side surface is convex; The sixth lens, which has positive optical power, has a convex first side surface; The optical lens contains a total of six lenses with optical power. The effective aperture diameter DST of the aperture and the total focal length F of the optical lens satisfy the following condition: 6.222≥DST / F≥2; the total focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy the following condition: 0.680≤F / ENPD≤0.

95.

31. The optical lens according to claim 30, characterized in that, The first side surface of the third lens is concave.

32. The optical lens according to claim 30, characterized in that, The first side surface of the third lens is convex.

33. The optical lens according to claim 30, characterized in that, The second side surface of the fourth lens is convex.

34. The optical lens according to claim 30, characterized in that, The second side surface of the fourth lens is concave.

35. The optical lens according to claim 30, characterized in that, The second side surface of the sixth lens is convex.

36. The optical lens according to claim 30, characterized in that, The second side surface of the sixth lens is concave.

37. The optical lens according to claim 30, characterized in that, The fourth lens, the fifth lens, and the sixth lens are aspherical lenses.

38. The optical lens according to claim 30, characterized in that, The optical lens also includes the aperture stop, which is disposed between the third lens and the fourth lens.

39. The optical lens according to any one of claims 30 to 38, characterized in that, The optical back focal length of the optical lens, i.e., the center distance BFL from the second side center of the last lens of the optical lens to the center of the imaging plane, and the optical total length of the optical lens, i.e., the center distance TTL from the first side center of the first lens of the optical lens to the center of the imaging plane of the optical lens, satisfy the following condition: BFL / TTL≥0.

03.

40. The optical lens according to any one of claims 30 to 38, characterized in that, The image height H corresponding to the maximum field of view of the optical lens, the maximum field of view FOV 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 condition: D / H / FOV≤0.

15.

41. The optical lens according to any one of claims 30 to 38, characterized in that, The radius of curvature R1 of the first side surface of the first lens and the radius of curvature R2 of the second side surface of the first lens satisfy the following condition: R1 / R2≥1.

5.

42. The optical lens according to any one of claims 30 to 38, characterized in that, 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.

15.

43. The optical lens according to any one of claims 30 to 38, characterized in that, The total focal length F of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: 0.1≤F / H≤1.

44. The optical lens according to any one of claims 30 to 38, characterized in that, The maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the total focal length F of the optical lens satisfy the following condition: D / H / F≤2.

45. The optical lens according to any one of claims 30 to 38, characterized in that, The focal length F1 of the first lens satisfies the following relationship with the total focal length F of the optical lens: F1 / F≤-2.

46. ​​The optical lens according to any one of claims 30 to 38, characterized in that, The focal length F2 of the second lens satisfies the following relationship with the total focal length F of the optical lens: F2 / F≤-1.

47. The optical lens according to any one of claims 30 to 38, characterized in that, The focal length F3 of the third lens satisfies the following relationship with the total focal length F of the optical lens: F3 / F≥3.

48. The optical lens according to any one of claims 30 to 38, characterized in that, The focal length F1 of the first lens and the focal length F2 of the second lens satisfy the following condition: 0.6 ≤ F1 / F2 ≤ 1.

8.

49. The optical lens according to any one of claims 30 to 38, characterized in that, The radius of curvature R3 of the first side surface of the second lens and the radius of curvature R4 of the second side surface of the second lens satisfy the following condition: -2≤R3 / R4≤-0.

3.

50. The optical lens according to any one of claims 30 to 38, characterized in that, The air gap d6 between the third lens and the aperture stop, the air gap d7 between the aperture stop and the fourth lens, and the total optical length of the optical lens, i.e. the distance TTL from the center of the first side of the first lens of the optical lens to the center of the imaging plane of the optical lens, satisfy the following: (d6+d7) / TTL≥0.

03.

51. The optical lens according to any one of claims 30 to 38, characterized in that, The air gap d2 between the first lens and 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 to the center of the imaging plane of the optical lens, satisfy the following condition: d2 / TTL≥0.

05.

52. The optical lens according to any one of claims 30 to 38, characterized in that, The Sg value Sag8 corresponding to the maximum light-transmitting aperture of the first side of the fourth lens of the optical lens and the Sg value Sag9 corresponding to the maximum light-transmitting aperture of the second side of the fourth lens of the optical lens satisfy the following condition: 0.1≤|Sag8 / Sag9|≤1.

5.

53. The optical lens according to any one of claims 30 to 38, characterized in that, The focal length F6 of the sixth lens satisfies the following relationship with the total focal length F of the optical lens: F6 / F≤15.

54. The optical lens according to any one of claims 30 to 38, characterized in that, The maximum field of view (FOV) of the optical lens, the total focal length (F) of the optical lens, and the image height (H) corresponding to the maximum field of view of the optical lens satisfy the following relationship: (FOV×F) / H≥55.

55. The optical lens according to any one of claims 30 to 38, characterized in that, The maximum effective aperture D12 of the second side of the sixth lens corresponding to the maximum field of view 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: D12*BFL / H≥5.

56. The optical lens according to any one of claims 30 to 38, characterized in that, The maximum effective aperture D12 of the second side of the sixth 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: D12 / H≥1.

57. The optical lens according to any one of claims 30 to 38, characterized in that, The radius of curvature R3 of the first side of the second lens satisfies the following relationship with the total focal length F of the optical lens: R3 / F≤-0.

05.

58. An electronic device, characterized in that, It includes an optical lens as described in any one of claims 1 to 57 and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

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