Optical lens and electronic device

Abstract

The application provides an optical lens and an electronic device. The optical lens comprises, in sequence from an object side to an image side along an optical axis, a first lens, the first lens having negative optical power, the object side surface of the first lens being a convex surface, and the image side surface of the first lens being a concave surface; a second lens, the second lens having negative optical power, the object side surface of the second lens being a convex surface, and the image side surface of the second lens being a concave surface; a third lens, the third lens having positive optical power, the object side surface of the third lens being a convex surface, and the image side surface of the third lens being a convex surface; a fourth lens, the fourth lens having positive optical power, at least one of the object side surface and the image side surface of the fourth lens being a convex surface; a fifth lens, the fifth lens having optical power, the object side surface of the fifth lens being a concave surface, and the image side surface of the fifth lens being a convex surface; and a sixth lens, the sixth lens having positive optical power, at least one of the object side surface and the image side surface of the sixth lens being a convex surface. The application solves the problem that the prior art optical lens is difficult to simultaneously consider small FNO, small distortion 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. As autonomous driving has become relatively mature, the requirements for low distortion, low FNO, and low cost of optical lenses, as a core component of autonomous driving assistance systems, have become increasingly prominent.

[0003] For some specialized optical lenses, a small FNO (field-to-noise ratio) is typically required to increase light intake. However, existing optical lenses have excessively large FNOs, resulting in insufficient light intake and failing to meet these requirements. To improve image quality, the number of lens elements is usually increased. This increase in lens element count leads to a larger overall size and weight, hindering miniaturization and weight reduction, and also increasing costs. For other specialized optical lenses, image quality deteriorates due to harsh environments, thus requiring stable imaging across a wide temperature range. Furthermore, for some optical lenses, low distortion is necessary to support backend algorithms and improve application accuracy. Aspherical lenses are often used to mitigate distortion, which further complicates cost reduction.

[0004] In other words, existing optical lenses have the problem of simultaneously achieving small FNO, low distortion, and miniaturization. Summary of the Invention

[0005] 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 small FNO, small distortion, and miniaturization.

[0006] To achieve the above objectives, according to one aspect of the present invention, an optical lens is provided, comprising, in sequence along the optical axis from the object side to the image side: a first lens having negative optical power, the object side of the first lens being convex and the image side being concave; a second lens having negative optical power, the object side of the second lens being convex and the image side being concave; a third lens having positive optical power, the object side of the third lens being convex and the image side being convex; a fourth lens having positive optical power, at least one of the object side and the image side of the fourth lens being convex; a fifth lens having optical power, the object side of the fifth lens being concave and the image side being convex; and a sixth lens having positive optical power, at least one of the object side and the image side of the sixth lens being convex.

[0007] Furthermore, the object-side surface of the fourth lens is convex, and the image-side surface of the fourth lens is also convex.

[0008] Furthermore, the object-side surface of the fourth lens is concave, and the image-side surface of the fourth lens is convex.

[0009] Furthermore, the fifth lens has positive optical power.

[0010] Furthermore, the fifth lens has negative optical power.

[0011] Furthermore, the object-side surface of the sixth lens is convex, and the image-side surface of the sixth lens is concave.

[0012] Furthermore, the object-side surface of the sixth lens is convex, and the image-side surface of the sixth lens is also convex.

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

[0014] 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 / EPND≤1.85.

[0015] Furthermore, the total focal length F of the optical lens and the total optical length of the optical lens, i.e., the distance TTL from the object-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: TTL / F≤8.

[0016] 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 total optical length of the optical lens, i.e., the distance TTL from the object-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: TTL / H / FOV≤0.055.

[0017] Furthermore, the image height H corresponding to the maximum field of view of the optical lens, the radian value θ of the maximum field of view of the optical lens, and the total optical length of the optical lens, i.e., the distance TTL from the object-side center of the first lens of the optical lens to the center of the imaging plane of the optical lens, satisfy the following: TTL / H / θ≤2.45.

[0018] Furthermore, the optical back focal length of the optical lens, i.e., the distance BFL from the center of the image side of the sixth lens of the optical lens to the center of the imaging plane, satisfies the following condition: BFL / TTL≥0.05.

[0019] 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 object side of the first lens corresponding to the maximum field of view of the optical lens satisfy the following: D / H / FOV≤0.018.

[0020] 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 total focal length F of the optical lens satisfy the following relationship: (FOV×F) / H≤64.

[0021] Furthermore, the focal length F of the lens and the aperture D5 of the optical lens satisfy the following relationship: D5 / F≥0.7.

[0022] Furthermore, the optical back focal length of the optical lens, i.e., the distance BFL from the center of the image side of the sixth lens of the optical lens to the center of the imaging plane, the image height H corresponding to the maximum field of view of the optical lens, and the maximum aperture D13 of the image side of the sixth lens corresponding to the maximum field of view of the optical lens satisfy the following: D13*BFL / H≥8.

[0023] Furthermore, the image height H corresponding to the maximum field of view of the optical lens and the maximum aperture D13 of the image side of the sixth lens corresponding to the maximum field of view of the optical lens satisfy the following relationship: D13 / H≥1.

[0024] Furthermore, the radius R10 of the object side of the fifth lens, the radius R11 of the image side of the fifth lens, and the center thickness d10 of the fifth lens satisfy the following condition: 1.8≥R10 / (R11+d10)≥0.5.

[0025] 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 total focal length F of the optical lens satisfy the following relationship: 1.6≥F*tan(FOV / 2) / (H / 2)≥1.

[0026] Furthermore, the image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the maximum aperture D of the object side of the first lens corresponding to the maximum field of view of the optical lens satisfy the following condition: D / H / F≤0.16.

[0027] Furthermore, the image height H corresponding to the maximum field of view 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 object side of the first lens corresponding to the maximum field of view of the optical lens satisfy the following condition: D / H / θ≤1.1.

[0028] 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 object side of the first lens corresponding to the maximum field of view of the optical lens satisfy the following condition: F*θ / D≥0.6.

[0029] Furthermore, the focal length F1 of the first lens of the optical lens satisfies the following relationship with the total focal length F of the optical lens: -0.5≥F1 / F≥-2.

[0030] Furthermore, the focal length F of the entire optical lens and the focal length F2 of the second lens of the optical lens satisfy the following condition: F2 / F≤-4.5.

[0031] Furthermore, the focal length F of the entire optical lens and the focal length F3 of the third lens of the optical lens satisfy the following condition: 0.5≤F3 / F≤2.

[0032] Furthermore, the focal length F of the entire optical lens group and the focal length F4 of the fourth lens of the optical lens satisfy the following condition: F4 / F≥1.85.

[0033] Furthermore, the focal length F of the entire optical lens group and the focal length F5 of the fifth lens of the optical lens satisfy the following condition: |F5 / F|≥5.

[0034] Furthermore, the focal length F of the entire optical lens group and the focal length F6 of the sixth lens of the optical lens satisfy the following condition: F6 / F≥1.85.

[0035] Furthermore, the total focal length F of the optical lens and the air gap d4 between the second and third lenses satisfy the condition: d4 / F≤0.6.

[0036] Furthermore, the focal length F1 of the first lens of the optical lens and the focal length F2 of the second lens of the optical lens satisfy the following condition: F1 / F2≤0.8.

[0037] Furthermore, the image height H corresponding to the maximum field of view of the optical lens and the total optical length of the optical lens, that is, the distance TTL from the object-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: TTL / H≤5.5.

[0038] According to another aspect of the present invention, an optical lens is provided, comprising, in sequence along the optical axis from the object side to the image side: 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 optical power; and a sixth lens having positive optical power; wherein the image height H corresponding to the maximum field of view of the optical lens and the maximum aperture D13 of the image side of the sixth lens corresponding to the maximum field of view of the optical lens satisfy the following relationship: D13 / H≥1.

[0039] Furthermore, the object-side surface of the first lens is convex, and the image-side surface of the first lens is concave.

[0040] Furthermore, the object-side surface of the second lens is convex, and the image-side surface of the second lens is concave.

[0041] Furthermore, the object-side surface of the third lens is convex, and the image-side surface of the third lens is also convex.

[0042] Furthermore, the object-side surface of the fourth lens is convex, and the image-side surface of the fourth lens is also convex.

[0043] Furthermore, the object-side surface of the fourth lens is concave, and the image-side surface of the fourth lens is convex.

[0044] Furthermore, the fifth lens has positive optical power.

[0045] Furthermore, the fifth lens has negative optical power.

[0046] Furthermore, the object-side surface of the fifth lens is concave, and the image-side surface of the fifth lens is convex.

[0047] Furthermore, the object-side surface of the sixth lens is convex, and the image-side surface of the sixth lens is concave.

[0048] Furthermore, the object-side surface of the sixth lens is convex, and the image-side surface of the sixth lens is also convex.

[0049] Furthermore, the optical lens also includes an aperture stop, which is positioned between the second lens and the third lens.

[0050] 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 / EPND≤1.85.

[0051] Furthermore, the total focal length F of the optical lens and the total optical length of the optical lens, i.e., the distance TTL from the object-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: TTL / F≤8.

[0052] 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 total optical length of the optical lens, i.e., the distance TTL from the object-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: TTL / H / FOV≤0.055.

[0053] Furthermore, the image height H corresponding to the maximum field of view of the optical lens, the radian value θ of the maximum field of view of the optical lens, and the total optical length of the optical lens, i.e., the distance TTL from the object-side center of the first lens of the optical lens to the center of the imaging plane of the optical lens, satisfy the following: TTL / H / θ≤2.45.

[0054] Furthermore, the optical back focal length of the optical lens, i.e., the distance BFL from the center of the image side of the sixth lens of the optical lens to the center of the imaging plane, satisfies the following condition: BFL / TTL≥0.05.

[0055] 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 object side of the first lens corresponding to the maximum field of view of the optical lens satisfy the following: D / H / FOV≤0.018.

[0056] 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 total focal length F of the optical lens satisfy the following relationship: (FOV×F) / H≤64.

[0057] Furthermore, the total focal length F of the optical lens and the aperture diameter D5 of the optical lens satisfy the following condition: D5 / F≥0.7.

[0058] Furthermore, the optical back focal length of the optical lens, i.e., the distance BFL from the center of the image side of the sixth lens of the optical lens to the center of the imaging plane, the image height H corresponding to the maximum field of view of the optical lens, and the maximum aperture D13 of the image side of the sixth lens corresponding to the maximum field of view of the optical lens satisfy the following: D13*BFL / H≥8.

[0059] Furthermore, the radius R10 of the object side of the fifth lens, the radius R11 of the image side of the fifth lens, and the center thickness d10 of the fifth lens satisfy the following condition: 1.8≥R10 / (R11+d10)≥0.5.

[0060] 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 total focal length F of the optical lens satisfy the following relationship: 1.6≥F*tan(FOV / 2) / (H / 2)≥1.

[0061] Furthermore, the image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the maximum aperture D of the object side of the first lens corresponding to the maximum field of view of the optical lens satisfy the following condition: D / H / F≤0.16.

[0062] Furthermore, the image height H corresponding to the maximum field of view 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 object side of the first lens corresponding to the maximum field of view of the optical lens satisfy the following condition: D / H / θ≤1.1.

[0063] 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 object side of the first lens corresponding to the maximum field of view of the optical lens satisfy the following condition: F*θ / D≥0.6.

[0064] Furthermore, the focal length F1 of the first lens of the optical lens satisfies the following relationship with the total focal length F of the optical lens: -0.5≥F1 / F≥-2.

[0065] Furthermore, the focal length F of the entire optical lens and the focal length F2 of the second lens of the optical lens satisfy the following condition: F2 / F≤-4.5.

[0066] Furthermore, the focal length F of the entire optical lens and the focal length F3 of the third lens of the optical lens satisfy the following condition: 0.5≤F3 / F≤2.

[0067] Furthermore, the focal length F of the entire optical lens group and the focal length F4 of the fourth lens of the optical lens satisfy the following condition: F4 / F≥1.85.

[0068] Furthermore, the focal length F of the entire optical lens group and the focal length F5 of the fifth lens of the optical lens satisfy the following condition: |F5 / F|≥5.

[0069] Furthermore, the focal length F of the entire optical lens group and the focal length F6 of the sixth lens of the optical lens satisfy the following condition: F6 / F≥1.85.

[0070] Furthermore, the total focal length F of the optical lens and the air gap d4 between the second and third lenses satisfy the condition: d4 / F≤0.6.

[0071] Furthermore, the focal length F1 of the first lens of the optical lens and the focal length F2 of the second lens of the optical lens satisfy the following condition: F1 / F2≤0.8.

[0072] Furthermore, the image height H corresponding to the maximum field of view of the optical lens and the total optical length of the optical lens, that is, the distance TTL from the object-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: TTL / H≤5.5.

[0073] 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.

[0074] According to the technical solution of this invention, the optical lens includes, in sequence along the optical axis from the object side to the image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The first lens has negative optical power, its object side is convex, and its image side is concave. The second lens has negative optical power, its object side is convex, and its image side is concave. The third lens has positive optical power, its object side is convex, and its image side is convex. The fourth lens has positive optical power, and at least one of its object side and image side is convex. The fifth lens has optical power, its object side is concave, and its image side is convex. The sixth lens has positive optical power, and at least one of its object side and image side is convex.

[0075] The first lens has a convex object-side surface and a concave image-side surface. This design allows the first lens to collect more light, enabling it to enter the subsequent optical system and increasing light throughput. The significant curvature of the first lens's object-side surface also helps reduce distortion, achieving a low-distortion characteristic. The second lens also has a convex object-side surface and a concave image-side surface, allowing it to further collect light. As a telephoto lens, the second lens facilitates a smooth transition in light path. The third lens has positive optical power. Its convex object-side surface and concave image-side surface, combined with its positive optical power, helps to compress the light collected at the front end and reduce the aperture of subsequent lenses. The fourth lens has positive optical power. At least one of its object-side and image-side surfaces is convex. When the object-side surface is concave and the image-side surface is convex, it helps the fourth lens compress the light collected at the front end and smoothly transition the light to the rear, reducing system sensitivity and improving image quality. When both the object-side and image-side surfaces are convex, it helps reduce the aperture of the rear lens and effectively reduces the system CRA, making the optical lens more suitable for use in low-light environments. The fifth lens is a meniscus lens, which helps the light to be smoothly transmitted to the rear, contributing to a small CRA and improving illumination. The sixth lens has positive optical power. At least one of its object-side and image-side surfaces is convex, which helps achieve a small CRA, improves illumination, effectively reduces system sensitivity, and improves image quality. When the image-side surface of the sixth lens is convex, it helps reduce ghosting caused by reflections from the sixth lens and the chip surface.

[0076] In addition, the optical lens of this application has the advantages of large image height, small distortion, small CRA, large light transmission, miniaturization and low cost. Attached Figure Description

[0077] 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:

[0078] Figure 1 A schematic diagram of the structure of an optical lens of Example 1 of the present invention is shown;

[0079] Figure 2 A schematic diagram of the structure of the optical lens of Example 2 of the present invention is shown;

[0080] Figure 3 A schematic diagram of the structure of the optical lens of Example 3 of the present invention is shown;

[0081] Figure 4 A schematic diagram of the structure of the optical lens of Example 4 of the present invention is shown;

[0082] Figure 5A schematic diagram of the structure of the optical lens of Example 5 of the present invention is shown;

[0083] Figure 6 A schematic diagram of the structure of the optical lens of Example Six of the present invention is shown;

[0084] Figure 7 A schematic diagram of the structure of the optical lens of Example Seven of the present invention is shown;

[0085] Figure 8 A schematic diagram of the structure of the optical lens of Example 8 of the present invention is shown;

[0086] Figure 9 A schematic diagram of the structure of the optical lens of Example 9 of the present invention is shown.

[0087] The above figures include the following reference numerals:

[0088] L1, First lens; S1, Object-side surface of the first lens; S2, Image-side surface of the first lens; L2, Second lens; S3, Object-side surface of the second lens; S4, Image-side surface of the second lens; STO, Aperture stop; L3, Third lens; S6, Object-side surface of the third lens; S7, Image-side surface of the third lens; L4, Fourth lens; S8, Object-side surface of the fourth lens; S9, Image-side surface of the fourth lens; L5, Fifth lens; S10, Object-side surface of the fifth lens; S11, Image-side surface of the fifth lens; L6, Sixth lens; S12, Object-side surface of the sixth lens; S13, Image-side surface of the sixth lens; IMA, Imaging plane. Detailed Implementation

[0089] 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.

[0090] 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.

[0091] 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.

[0092] 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.

[0093] 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.

[0094] 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 object side is called the object-side surface of the lens, and the surface of each lens closest to the image side is called the image-side surface of the lens. The surface shape in the paraxial region can be determined according to the judgment method commonly used by those knowledgeable 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 object-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 image-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.

[0095] In an exemplary embodiment, the optical lens provided in this application can be used, for example, as a vehicle-mounted lens. In an exemplary embodiment, the optical lens provided in this application can be used, for example, as a projection lens or a lidar transmitter lens.

[0096] To address the problem that existing optical lenses cannot simultaneously achieve small FNO, low distortion, and miniaturization, this invention provides an optical lens and an electronic device.

[0097] Example 1

[0098] like Figures 1 to 9As shown, the optical lens includes, along the optical axis from the object side to the image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The first lens has negative optical power, its object side is convex, and its image side is concave. The second lens has negative optical power, its object side is convex, and its image side is concave. The third lens has positive optical power, its object side is convex, and its image side is convex. The fourth lens has positive optical power, and at least one of its object side and image side is convex. The fifth lens has optical power, its object side is concave, and its image side is convex. The sixth lens has positive optical power, and at least one of its object side and image side is convex.

[0099] The first lens has a convex object-side surface and a concave image-side surface. This design allows the first lens to collect more light, enabling it to enter the subsequent optical system and increasing light throughput. The significant curvature of the first lens's object-side surface also helps reduce distortion, achieving a low-distortion characteristic. The second lens also has a convex object-side surface and a concave image-side surface, allowing it to further collect light. As a telephoto lens, the second lens facilitates a smooth transition in light path. The third lens has positive optical power. Its convex object-side surface and concave image-side surface, combined with its positive optical power, helps to compress the light collected at the front end and reduce the aperture of subsequent lenses. The fourth lens has positive optical power. At least one of its object-side and image-side surfaces is convex. When the object-side surface is concave and the image-side surface is convex, it helps the fourth lens compress the light collected at the front end and smoothly transition the light to the rear, reducing system sensitivity and improving image quality. When both the object-side and image-side surfaces are convex, it helps reduce the aperture of the rear lens and effectively reduces the system CRA, making the optical lens more suitable for use in low-light environments. The fifth lens is a meniscus lens, which helps the light to be smoothly transmitted to the rear, contributing to a small CRA and improving illumination. The sixth lens has positive optical power. At least one of its object-side and image-side surfaces is convex, which helps achieve a small CRA, improve illumination, effectively reduce system sensitivity, and improve image quality. When the image-side surface of the sixth lens is convex, it helps reduce ghosting caused by reflections from the sixth lens and the chip surface.

[0100] In addition, the optical lens of this application has the advantages of large image height, small distortion, small CRA, large light transmission, miniaturization and low cost.

[0101] In this embodiment, the object side of the fourth lens is convex, the image side of the fourth lens is convex, and the fourth lens has positive optical power. This configuration allows the fourth lens to further compress the light collected at the front end and reduce the aperture of the rear lens, while effectively reducing system CRA, making the optical lens more suitable for use in low-light environments.

[0102] In this embodiment, the object side of the fourth lens is concave and the image side is convex. The fourth lens also has positive optical power. This configuration is beneficial for compressing the light collected at the front end and making the light transition smoothly to the rear, reducing system sensitivity, improving image quality, and effectively reducing system CRA, making the optical lens more suitable for use in low-light environments.

[0103] In this embodiment, the fifth lens has a positive optical power, but it can also be a negative optical power. The meniscus helps light to be smoothly transmitted to the rear, which is beneficial for achieving a small CRA and improving illumination. In this embodiment, the object-side surface of the sixth lens is convex, and the image-side surface of the sixth lens is concave. The sixth lens is a meniscus, which helps light to converge smoothly to the imaging plane. While achieving a small CRA and improving illumination, it can effectively reduce system sensitivity and improve image quality.

[0104] In this embodiment, the object-side surface of the sixth lens is convex, and the image-side surface of the sixth lens is also convex. The sixth lens is a biconvex lens, which, while achieving a smaller CRA and improving illumination, also helps to reduce ghost images reflected from the chip surface due to the convex image-side surface of the sixth lens.

[0105] In this embodiment, the optical lens also includes an aperture stop, which is positioned between the second lens and the third lens. This arrangement facilitates the effective focusing of light entering the optical system by the aperture stop, and the forward placement of the aperture stop helps to achieve a small FNO (noise of non-reflection).

[0106] In this embodiment, the overall focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy the condition: F / EPND ≤ 1.85. By reasonably constraining this condition, it is beneficial to achieve an optical lens with a small FNO, increasing the amount of light entering the lens and ensuring high light transmission and brightness. Preferably, F / EPND ≤ 1.65.

[0107] In this embodiment, the total focal length F of the optical lens and the total optical length of the optical lens, i.e., the distance TTL from the object-side center of the first lens to the center of the imaging plane of the optical lens, satisfy the condition: TTL / F ≤ 8. By reasonably constraining this condition, the length of the optical lens can be effectively limited, achieving miniaturization. Preferably, TTL / F ≤ 7.

[0108] 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 total optical length of the optical lens, i.e., the distance TTL from the object-side center of the first lens to the center of the imaging plane of the optical lens, satisfy the condition: TTL / H / FOV ≤ 0.055. Satisfying this condition effectively limits the length of the optical lens for the same imaging plane and image height, which is beneficial for miniaturization. For the same TTL and FOV, it facilitates achieving a large image height. Preferably, TTL / H / FOV ≤ 0.045.

[0109] In this embodiment, the image height H corresponding to the maximum field of view of the optical lens, the radian value θ of the maximum field of view of the optical lens, and the total optical length of the optical lens, i.e., the distance TTL from the object-side center of the first lens of the optical lens to the center of the imaging plane of the optical lens, satisfy the condition: TTL / H / θ ≤ 2.45. Satisfying this condition effectively limits the length of the optical lens under the same imaging plane and image height, which is beneficial for miniaturization. Preferably, TTL / H / θ ≤ 2.35.

[0110] In this embodiment, the optical back focal length (BFL), i.e., the distance from the center of the image side of the sixth lens of the optical lens to the center of the imaging plane, satisfies the condition that BFL / TTL ≥ 0.05 with respect to the total optical length of the optical lens (TTL), i.e., the distance from the center of the object side of the first lens of the optical lens to the center of the imaging plane. Satisfying this condition ensures the long back focal length while achieving miniaturization, which is beneficial for module assembly. Preferably, BFL / TTL ≥ 0.08.

[0111] 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 object side of the first lens corresponding to the maximum field of view of the optical lens satisfy the condition: D / H / FOV ≤ 0.018. Satisfying this condition helps to ensure a small front aperture of the optical lens, which is beneficial for miniaturization. Preferably, D / H / FOV ≤ 0.016.

[0112] 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 total focal length (F) of the optical lens satisfy the condition: (FOV×F) / H≤64. Satisfying this condition simultaneously satisfies the requirements of short focal length and small field of view, which is beneficial for achieving low distortion. Preferably, (FOV×F) / H≤62.

[0113] In this embodiment, the focal length F of the optical lens and the aperture diameter D5 of the optical lens satisfy the condition: D5 / F ≥ 0.7. Satisfying this condition is beneficial for achieving a large aperture diameter and increasing the amount of light entering the lens. Preferably, D5 / F ≥ 0.8.

[0114] In this embodiment, the optical back focal length of the optical lens, i.e., the distance BFL from the center of the image side of the sixth lens to the center of the imaging plane, the image height H corresponding to the maximum field of view of the optical lens, and the maximum aperture D13 of the image side of the sixth lens corresponding to the maximum field of view of the optical lens satisfy the following condition: D13*BFL / H≥8. Satisfying this condition allows for a longer back focal length under the same imaging plane and image height, which is beneficial for achieving a smaller CRA (Cost Aspect Ratio). Preferably, D13*BFL / H≥8.5.

[0115] In this embodiment, the image height H corresponding to the maximum field of view of the optical lens and the maximum aperture D13 of the image side of the sixth lens corresponding to the maximum field of view of the optical lens satisfy the condition: D13 / H≥1. Satisfying this condition means that, under the same imaging plane and image height, the last lens has a larger aperture, which is beneficial for achieving a small CRA (Chip-Ray Amplifier). Preferably, D13 / H≥1.1.

[0116] In this embodiment, the radius R10 of the object side of the fifth lens, the radius R11 of the image side of the fifth lens, and the center thickness d10 of the fifth lens satisfy the following condition: 1.8 ≥ R10 / (R11+d10) ≥ 0.5. Satisfying this condition ensures that the sagittal heights of the two sides of the fifth lens are close, which is beneficial for smooth light transition. Preferably, 1.6 ≥ R10 / (R11+d10) ≥ 0.7.

[0117] 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 total focal length F of the optical lens satisfy the following condition: 1.6 ≥ F * tan(FOV / 2) / (H / 2) ≥ 1. Satisfying this condition ensures that the ideal image height is close to the true image height, which is beneficial for achieving low distortion. Preferably, 1.5 ≥ F * tan(FOV / 2) / (H / 2) ≥ 1.

[0118] In this embodiment, the image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the maximum aperture D of the object side of the first lens corresponding to the maximum field of view of the optical lens satisfy the condition: D / H / F ≤ 0.16. Satisfying this condition allows the optical lens to have a large target surface and a small aperture under a fixed focal length. Preferably, D / H / F ≤ 0.15.

[0119] In this embodiment, the image height H corresponding to the maximum field of view 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 object side of the first lens corresponding to the maximum field of view of the optical lens satisfy the condition: D / H / θ≤1.1. Satisfying this condition helps to ensure a small front aperture, enabling miniaturization. Preferably, D / H / θ≤1.

[0120] 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 object side of the first lens corresponding to the maximum field of view of the optical lens satisfy the condition: F*θ / D≥0.6. Satisfying this condition allows for a smaller front aperture of the optical lens, reducing the overall size of the optical lens. Preferably, F*θ / D≥0.65.

[0121] In this embodiment, the focal length F1 of the first lens of the optical lens satisfies the following condition with respect to the total focal length F of the optical lens: -0.5 ≥ F1 / F ≥ -2. Satisfying this condition helps to collect light and diverge the light beam behind the first lens, which is beneficial for achieving a small FNO. Preferably, -0.8 ≥ F1 / F ≥ -1.9.

[0122] In this embodiment, the focal length F of the entire optical lens and the focal length F2 of the second lens satisfy the condition: F2 / F ≤ -4.5. This condition is satisfied, and the second lens is a telephoto lens with negative optical power, which further diverges the light, contributing to a smoother light transition and reducing sensitivity. Preferably, F2 / F ≤ -4.9.

[0123] In this embodiment, the focal length F of the entire optical lens and the focal length F3 of the third lens satisfy the condition: 0.5 ≤ F3 / F ≤ 2. Satisfying this condition enables a short focal length third lens, which helps in the light-gathering function of the third lens and ensures sufficient light transmission. Preferably, 0.8 ≤ F3 / F ≤ 1.9.

[0124] In this embodiment, the focal length F of the entire optical lens and the focal length F4 of the fourth lens satisfy the condition: F4 / F ≥ 1.85. This condition is satisfied, and since the fourth lens is a telephoto lens, it helps to smooth the light transition and reduce sensitivity. Preferably, F4 / F ≥ 2.

[0125] In this embodiment, the focal length F of the entire optical lens and the focal length F5 of the fifth lens satisfy the condition |F5 / F|≥5. This condition is satisfied, and since the fifth lens is a telephoto lens, it helps to smooth the light transition and reduce sensitivity. Preferably, |F5 / F|≥7.

[0126] In this embodiment, the focal length F of the entire optical lens and the focal length F6 of the sixth lens satisfy the condition: F6 / F ≥ 1.85. This condition is satisfied, and since the sixth lens is a telephoto lens, it helps to smooth the light transition and reduce sensitivity. Preferably, F6 / F ≥ 2.

[0127] In this embodiment, the overall focal length F of the optical lens and the air gap d4 between the second and third lenses satisfy the condition: d4 / F ≤ 0.6. Satisfying this condition results in a smaller center distance between the second and third lenses, which is beneficial for miniaturization. Preferably, d4 / F ≤ 0.5.

[0128] In this embodiment, the focal length F1 of the first lens and the focal length F2 of the second lens satisfy the condition: F1 / F2≤0.8. 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, F1 / F2≤0.5.

[0129] In this embodiment, the image height H corresponding to the maximum field of view of the optical lens and the total optical length of the optical lens, i.e., the distance TTL from the object-side center of the first lens of the optical lens to the center of the imaging plane of the optical lens, satisfy the condition: TTL / H ≤ 5.5. Satisfying this condition is beneficial for achieving a large image height under the same TTL conditions. Preferably, TTL / H ≤ 4.5.

[0130] Example 2

[0131] like Figures 1 to 9 As shown, the optical lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens along the optical axis from the object side to the image side. The first lens has negative optical power; the second lens has negative optical power; the third lens has positive optical power; the fourth lens has positive optical power; the fifth lens has optical power; and the sixth lens has positive optical power. Among them, the image height H corresponding to the maximum field of view of the optical lens and the maximum aperture D13 of the image side of the sixth lens corresponding to the maximum field of view of the optical lens satisfy the following relationship: D13 / H≥1.

[0132] Preferably, D13 / H ≥ 1.1.

[0133] The first lens has negative optical power, with a convex object-side and a concave image-side. This allows the first lens to collect more light into the rear optical system, increasing light throughput. The second lens also has negative optical power, with a convex object-side and a concave image-side, further collecting light. As a telephoto lens, it ensures a smooth transition of light path. The third lens has positive optical power, with both object and image-side surfaces convex. This helps compress the light collected at the front and reduce the aperture of the rear lenses, achieving miniaturization. The fourth lens has positive optical power, with at least one of its object-side and image-side surfaces being convex. When the object-side is concave and the image-side is convex, it helps compress the light collected at the front and smoothly transition the light to the rear, reducing system sensitivity and improving image quality. When both object and image sides are convex, it helps reduce the aperture of the rear lenses and effectively reduces the system's CRA (Cost Averaging Reduction), making the lens more suitable for low-light environments. The fifth lens has optical power, which can be either positive or negative. It is a meniscus lens, which helps to smoothly transmit light to the rear, facilitating a smaller CRA (Chip-Ray Aspect Ratio) and improving illumination. The sixth lens has positive optical power, and at least one of its object-side and image-side surfaces is convex. A convex image-side surface helps reduce ghosting caused by reflections from the chip surface. Furthermore, by constraining the relationship between the image height H corresponding to the maximum field of view of the optical lens and the maximum aperture D13 of the sixth lens's image-side surface corresponding to the maximum field of view, under the same imaging plane and image height, a larger aperture in the last lens is beneficial for achieving a smaller CRA.

[0134] In addition, the optical lens of this application has the advantages of large image height, small distortion, small CRA, large light transmission, miniaturization and low cost.

[0135] In this embodiment, the object-side surface of the first lens is convex, and the image-side surface is concave. This allows the first lens to collect more light and enter the subsequent optical system, increasing the light flux. The larger curvature of the object-side surface of the first lens helps reduce distortion and achieve the characteristic of low distortion.

[0136] In this embodiment, the object-side surface of the second lens is convex, and the image-side surface is concave. This allows the second lens to further collect light, and since it is a telephoto lens, it facilitates a smooth transition in the light path.

[0137] In this embodiment, both the object-side and image-side surfaces of the third lens are convex. The third lens, with its positive optical power, helps to compress the light collected at the front end and reduce the aperture of the subsequent lenses.

[0138] In this embodiment, the object side of the fourth lens is convex, the image side of the fourth lens is convex, and the fourth lens has positive optical power. This configuration allows the fourth lens to further compress the light collected at the front end and reduce the aperture of the rear lens, while effectively reducing system CRA, making the optical lens more suitable for use in low-light environments.

[0139] In this embodiment, the object side of the fourth lens is concave and the image side is convex. The fourth lens also has positive optical power. This configuration is beneficial for compressing the light collected at the front end and making the light transition smoothly to the rear, reducing system sensitivity, improving image quality, and effectively reducing system CRA, making the optical lens more suitable for use in low-light environments.

[0140] In this embodiment, the object-side surface of the fifth lens is concave, and the image-side surface is convex. The fifth lens can be of positive or negative optical power. It is a meniscus lens, which helps to smoothly transmit light to the rear, facilitating a smaller CRA (Current Radiation Amplitude) and simultaneously improving illumination.

[0141] In this embodiment, the object-side surface of the sixth lens is convex, and the image-side surface is concave. The sixth lens is a meniscus lens, which helps light to converge smoothly onto the imaging surface. While achieving a small CRA and improving illumination, it can effectively reduce system sensitivity and improve image quality.

[0142] In this embodiment, the object-side surface of the sixth lens is convex, and the image-side surface of the sixth lens is also convex. The sixth lens is a biconvex lens, which, while achieving a smaller CRA and improving illumination, also helps to reduce ghost images reflected from the chip surface due to the convex image-side surface of the sixth lens.

[0143] In this embodiment, the optical lens also includes an aperture stop, which is positioned between the second lens and the third lens. This arrangement facilitates the effective focusing of light entering the optical system by the aperture stop, and the forward placement of the aperture stop helps to achieve a small FNO (noise of non-reflection).

[0144] In this embodiment, the overall focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy the condition: F / EPND ≤ 1.85. By reasonably constraining this condition, it is beneficial to achieve an optical lens with a small FNO, increasing the amount of light entering the lens and ensuring high light transmission and brightness. Preferably, F / EPND ≤ 1.65.

[0145] In this embodiment, the total focal length F of the optical lens and the total optical length of the optical lens, i.e., the distance TTL from the object-side center of the first lens to the center of the imaging plane of the optical lens, satisfy the condition: TTL / F ≤ 8. By reasonably constraining this condition, the length of the optical lens can be effectively limited, achieving miniaturization. Preferably, TTL / F ≤ 7.

[0146] 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 total optical length of the optical lens, i.e., the distance TTL from the object-side center of the first lens to the center of the imaging plane of the optical lens, satisfy the condition: TTL / H / FOV ≤ 0.055. Satisfying this condition effectively limits the length of the optical lens for the same imaging plane and image height, which is beneficial for miniaturization. For the same TTL and FOV, it facilitates achieving a large image height. Preferably, TTL / H / FOV ≤ 0.045.

[0147] In this embodiment, the image height H corresponding to the maximum field of view of the optical lens, the radian value θ of the maximum field of view of the optical lens, and the total optical length of the optical lens, i.e., the distance TTL from the object-side center of the first lens of the optical lens to the center of the imaging plane of the optical lens, satisfy the condition: TTL / H / θ ≤ 2.45. Satisfying this condition effectively limits the length of the optical lens under the same imaging plane and image height, which is beneficial for miniaturization. Preferably, TTL / H / θ ≤ 2.35.

[0148] In this embodiment, the optical back focal length (BFL), i.e., the distance from the center of the image side of the sixth lens of the optical lens to the center of the imaging plane, satisfies the condition that BFL / TTL ≥ 0.05 with respect to the total optical length of the optical lens (TTL), i.e., the distance from the center of the object side of the first lens of the optical lens to the center of the imaging plane. Satisfying this condition ensures the long back focal length while achieving miniaturization, which is beneficial for module assembly. Preferably, BFL / TTL ≥ 0.08.

[0149] 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 object side of the first lens corresponding to the maximum field of view of the optical lens satisfy the condition: D / H / FOV ≤ 0.018. Satisfying this condition helps to ensure a small front aperture of the optical lens, which is beneficial for miniaturization. Preferably, D / H / FOV ≤ 0.016.

[0150] 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 total focal length (F) of the optical lens satisfy the condition: (FOV×F) / H≤64. Satisfying this condition simultaneously satisfies the requirements of short focal length and small field of view, which is beneficial for achieving low distortion. Preferably, (FOV×F) / H≤62.

[0151] In this embodiment, the overall focal length F of the optical lens and the aperture diameter D5 of the optical lens satisfy the condition: D5 / F ≥ 0.7. Satisfying this condition is beneficial for achieving a large aperture diameter and increasing the amount of light entering the lens. Preferably, D5 / F ≥ 0.8.

[0152] In this embodiment, the optical back focal length of the optical lens, i.e., the distance BFL from the center of the image side of the sixth lens to the center of the imaging plane, the image height H corresponding to the maximum field of view of the optical lens, and the maximum aperture D13 of the image side of the sixth lens corresponding to the maximum field of view of the optical lens satisfy the following condition: D13*BFL / H≥8. Satisfying this condition allows for a longer back focal length under the same imaging plane and image height, which is beneficial for achieving a smaller CRA (Cost Aspect Ratio). Preferably, D13*BFL / H≥8.5.

[0153] In this embodiment, the radius R10 of the object side of the fifth lens, the radius R11 of the image side of the fifth lens, and the center thickness d10 of the fifth lens satisfy the following condition: 1.8 ≥ R10 / (R11+d10) ≥ 0.5. Satisfying this condition ensures that the sagittal heights of the two sides of the fifth lens are close, which is beneficial for smooth light transition. Preferably, 1.6 ≥ R10 / (R11+d10) ≥ 0.7.

[0154] 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 total focal length F of the optical lens satisfy the following condition: 1.6 ≥ F * tan(FOV / 2) / (H / 2) ≥ 1. Satisfying this condition ensures that the ideal image height is close to the true image height, which is beneficial for achieving low distortion. Preferably, 1.5 ≥ F * tan(FOV / 2) / (H / 2) ≥ 1.

[0155] In this embodiment, the image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the maximum aperture D of the object side of the first lens corresponding to the maximum field of view of the optical lens satisfy the condition: D / H / F ≤ 0.16. Satisfying this condition allows the optical lens to have a large target surface and a small aperture under a fixed focal length. Preferably, D / H / F ≤ 0.15.

[0156] In this embodiment, the image height H corresponding to the maximum field of view 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 object side of the first lens corresponding to the maximum field of view of the optical lens satisfy the condition: D / H / θ≤1.1. Satisfying this condition helps to ensure a small front aperture, enabling miniaturization. Preferably, D / H / θ≤1.

[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 object side of the first lens corresponding to the maximum field of view of the optical lens satisfy the condition: F*θ / D≥0.6. Satisfying this condition allows for a smaller front aperture of the optical lens, reducing the overall size of the optical lens. Preferably, F*θ / D≥0.65.

[0158] In this embodiment, the focal length F1 of the first lens of the optical lens satisfies the following condition with respect to the total focal length F of the optical lens: -0.5 ≥ F1 / F ≥ -2. Satisfying this condition helps to collect light and diverge the light beam behind the first lens, which is beneficial for achieving a small FNO. Preferably, -0.8 ≥ F1 / F ≥ -1.9.

[0159] In this embodiment, the focal length F of the entire optical lens and the focal length F2 of the second lens satisfy the condition: F2 / F ≤ -4.5. This condition is satisfied, and the second lens is a telephoto lens with negative optical power, which further diverges the light, contributing to a smoother light transition and reducing sensitivity. Preferably, F2 / F ≤ -4.9.

[0160] In this embodiment, the focal length F of the entire optical lens and the focal length F3 of the third lens satisfy the condition: 0.5 ≤ F3 / F ≤ 2. Satisfying this condition enables a short focal length third lens, which helps in the light-gathering function of the third lens and ensures sufficient light transmission. Preferably, 0.8 ≤ F3 / F ≤ 1.9.

[0161] In this embodiment, the focal length F of the entire optical lens and the focal length F4 of the fourth lens satisfy the condition: F4 / F ≥ 1.85. This condition is satisfied, and since the fourth lens is a telephoto lens, it helps to smooth the light transition and reduce sensitivity. Preferably, F4 / F ≥ 2.

[0162] In this embodiment, the focal length F of the entire optical lens and the focal length F5 of the fifth lens satisfy the condition |F5 / F|≥5. This condition is satisfied, and since the fifth lens is a telephoto lens, it helps to smooth the light transition and reduce sensitivity. Preferably, |F5 / F|≥7.

[0163] In this embodiment, the focal length F of the entire optical lens and the focal length F6 of the sixth lens satisfy the condition: F6 / F ≥ 1.85. This condition is satisfied, and since the sixth lens is a telephoto lens, it helps to smooth the light transition and reduce sensitivity. Preferably, F6 / F ≥ 2.

[0164] In this embodiment, the overall focal length F of the optical lens and the air gap d4 between the second and third lenses satisfy the condition: d4 / F ≤ 0.6. Satisfying this condition results in a smaller center distance between the second and third lenses, which is beneficial for miniaturization. Preferably, d4 / F ≤ 0.5.

[0165] In this embodiment, the focal length F1 of the first lens and the focal length F2 of the second lens satisfy the condition: F1 / F2≤0.8. 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, F1 / F2≤0.5.

[0166] In this embodiment, the image height H corresponding to the maximum field of view of the optical lens and the total optical length of the optical lens, i.e., the distance TTL from the object-side center of the first lens of the optical lens to the center of the imaging plane of the optical lens, satisfy the condition: TTL / H ≤ 5.5. Satisfying this condition is beneficial for achieving a large image height under the same TTL conditions. Preferably, TTL / H ≤ 4.5.

[0167] Optionally, the aforementioned optical lens may also include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface.

[0168] The optical lens in this application can employ multiple lenses, such as the six lenses described above. In an exemplary embodiment, the first lens, second lens, third lens, fourth lens, fifth lens, and sixth lens can all be glass lenses. Optical lenses made of glass can suppress the shift of the back focus of the optical lens due to temperature changes, thereby improving system stability. Simultaneously, using glass material can avoid lens blurring caused by high and low temperature changes in the operating environment, thus affecting the normal use of the lens. For example, an all-glass optical lens has a wider temperature range, maintaining stable optical performance within the range of -40℃ to 105℃. Of course, in applications with lower temperature stability requirements, the first to sixth lenses in the optical lens can also be made of plastic. Using plastic to make optical lenses can effectively reduce manufacturing costs. Of course, the first to sixth lenses in the optical lens can also be made of a combination of plastic and glass. It should be noted that in this application, the first to sixth lenses do not necessarily have to be aspherical lenses; however, in practical applications, if the resolution quality of the optical lens is a primary concern, the first to sixth lenses can be selected as aspherical lenses.

[0169] 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.

[0170] 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.

[0171] 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.

[0172] It should be noted that any of the examples one through nine below are applicable to all embodiments of this application.

[0173] Example 1

[0174] like Figure 1 The diagram shown is a schematic of the optical lens structure of Example 1.

[0175] like Figure 1 As shown, the optical lens, from the object side to the image side, includes the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, sixth lens L6, and imaging plane IMA.

[0176] The first lens L1 has negative optical power, its object-side surface S1 is convex, and its image-side surface S2 is concave. The second lens L2 has negative optical power, its object-side surface S3 is convex, and its image-side surface S4 is concave. The third lens L3 has positive optical power, its object-side surface S6 is convex, and its image-side surface S7 is convex. The fourth lens L4 has positive optical power, its object-side surface S8 is convex, and its image-side surface S9 is convex. The fifth lens L5 has negative optical power, its object-side surface S10 is concave, and its image-side surface S11 is convex. The sixth lens L6 has positive optical power, its object-side surface S12 is convex, and its image-side surface S13 is convex. Light from the object passes sequentially through surfaces S1 to S13 and is finally imaged onto the imaging plane IMA.

[0177] In this example, the total effective focal length F of the optical lens is 11.148mm, the maximum field of view (FOV) of the optical lens is 101.600°, and the total length (TTL) of the optical lens is 69.593mm.

[0178] 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).

[0179] Surf Radius Thickness Nd Vd 1 24.916 5.619 1.77 49.61 2 8.316 6.039 3 32.084 6.221 1.59 61.25 4 18.993 2.521 5 Infinity 1.796 6 150.000 8.801 1.85 23.79 7 -17.066 3.587 8 200.000 6.218 1.62 63.41 9 -30.993 3.987 10 -16.794 5.000 1.59 61.25 11 -23.925 0.200 12 33.284 10.645 1.85 23.79 13 -185.985 8.960 IMA infinity

[0180] Table 1

[0181] In Example 1, the object-side and image-side surfaces of any one of the lenses L1 to L6 are not aspherical. However, when focusing on the resolving power of the optical lens, aspherical lenses can be selected from L1 to L6 as needed. The surface shape of the aspherical lens can be limited by, but is not limited to, the following aspherical formula:

[0182]

[0183] Example 2

[0184] 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.

[0185] like Figure 2 As shown, the optical lens, from the object side to the image side, includes the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, sixth lens L6, and imaging plane IMA.

[0186] The first lens L1 has negative optical power, its object-side surface S1 is convex, and its image-side surface S2 is concave. The second lens L2 has negative optical power, its object-side surface S3 is convex, and its image-side surface S4 is concave. The third lens L3 has positive optical power, its object-side surface S6 is convex, and its image-side surface S7 is convex. The fourth lens L4 has positive optical power, its object-side surface S8 is convex, and its image-side surface S9 is convex. The fifth lens L5 has negative optical power, its object-side surface S10 is concave, and its image-side surface S11 is convex. The sixth lens L6 has positive optical power, its object-side surface S12 is convex, and its image-side surface S13 is convex. Light from the object passes sequentially through surfaces S1 to S13 and is finally imaged onto the imaging plane IMA.

[0187] In this example, the total effective focal length F of the optical lens is 11.148mm, the maximum field of view (FOV) of the optical lens is 101.600°, and the total length (TTL) of the optical lens is 69.591mm.

[0188] Table 2 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).

[0189] Surf Radius Thickness Nd Vd 1 24.916 5.619 1.77 49.61 2 8.316 6.039 3 32.083 6.221 1.59 61.25 4 18.995 2.521 5 Infinity 1.796 6 150.000 8.801 1.85 23.79 7 -17.066 3.587 8 200.000 6.218 1.62 63.41 9 -30.993 3.987 10 -16.794 5.000 1.59 61.25 11 -23.925 0.200 12 33.284 10.643 1.85 23.79 13 -185.998 8.960 IMA infinity

[0190] Table 2

[0191] In Example 2, the object-side and image-side surfaces of any one of the lenses L1 to L6 are not aspherical. However, when focusing on the resolving power of the optical lens, aspherical lenses can be selected from L1 to L6 as needed. The surface shape of the aspherical lens can be limited by, but is not limited to, the following aspherical formula:

[0192]

[0193] Example 3

[0194] like Figure 3 As shown, an optical lens of Example 3 of this application is described. Figure 3 A schematic diagram of the optical lens structure of Example 3 is shown.

[0195] like Figure 3 As shown, the optical lens, from the object side to the image side, includes the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, sixth lens L6, and imaging plane IMA.

[0196] The first lens L1 has negative optical power, its object-side surface S1 is convex, and its image-side surface S2 is concave. The second lens L2 has negative optical power, its object-side surface S3 is convex, and its image-side surface S4 is concave. The third lens L3 has positive optical power, its object-side surface S6 is convex, and its image-side surface S7 is convex. The fourth lens L4 has positive optical power, its object-side surface S8 is convex, and its image-side surface S9 is convex. The fifth lens L5 has negative optical power, its object-side surface S10 is concave, and its image-side surface S11 is convex. The sixth lens L6 has positive optical power, its object-side surface S12 is convex, and its image-side surface S13 is concave. Light from the object passes sequentially through surfaces S1 to S13 and is finally imaged onto the imaging plane IMA.

[0197] In this example, the total effective focal length F of the optical lens is 11.093mm, the maximum field of view (FOV) of the optical lens is 101.600°, and the total length (TTL) of the optical lens is 74.054mm.

[0198] Table 3 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).

[0199] Surf Radius Thickness Nd Vd 1 24.674 6.019 1.77 49.61 2 8.650 5.776 3 32.568 5.220 1.59 61.25 4 15.422 2.189 5 Infinity 2.558 6 150.000 10.329 1.85 23.79 7 -17.734 5.860 8 200.000 9.006 1.62 63.41 9 -24.773 3.987 10 -16.711 5.000 1.59 61.25 11 -22.256 0.200 12 23.259 10.567 1.85 23.79 13 42.908 7.344 IMA infinity

[0200] Table 3

[0201] In Example 3, the object-side and image-side surfaces of any one of the lenses from the first lens L1 to the sixth lens L6 are not aspherical. However, when focusing on the resolving power of the optical lens, the first lens L1 to the sixth lens L6 can be selected as aspherical lenses as needed. The surface shape of the aspherical lens can be limited by, but is not limited to, the following aspherical formula:

[0202]

[0203] Example 4

[0204] like Figure 4 As shown, the optical lens of Example 4 of this application is described. Figure 4 A schematic diagram of the optical lens structure of Example 4 is shown.

[0205] like Figure 4 As shown, the optical lens, from the object side to the image side, includes the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, sixth lens L6, and imaging plane IMA.

[0206] The first lens L1 has negative optical power, its object-side surface S1 is convex, and its image-side surface S2 is concave. The second lens L2 has negative optical power, its object-side surface S3 is convex, and its image-side surface S4 is concave. The third lens L3 has positive optical power, its object-side surface S6 is convex, and its image-side surface S7 is convex. The fourth lens L4 has positive optical power, its object-side surface S8 is convex, and its image-side surface S9 is convex. The fifth lens L5 has negative optical power, its object-side surface S10 is concave, and its image-side surface S11 is convex. The sixth lens L6 has positive optical power, its object-side surface S12 is convex, and its image-side surface S13 is concave. Light from the object passes sequentially through surfaces S1 to S13 and is finally imaged onto the imaging plane IMA.

[0207] In this example, the total effective focal length F of the optical lens is 11.093mm, the maximum field of view (FOV) of the optical lens is 101.600°, and the total length (TTL) of the optical lens is 74.053mm.

[0208] Table 4 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).

[0209]

[0210]

[0211] Table 4

[0212] In Example 4, the object-side and image-side surfaces of any one of the lenses from the first lens L1 to the sixth lens L6 are not aspherical. However, when focusing on the resolving power of the optical lens, the first lens L1 to the sixth lens L6 can be selected as aspherical lenses as needed. The surface shape of the aspherical lens can be limited by, but is not limited to, the following aspherical formula:

[0213]

[0214] Example 5

[0215] like Figure 5 As shown, an optical lens of Example 5 of this application is described. Figure 5 A schematic diagram of the optical lens structure of Example 5 is shown.

[0216] like Figure 5 As shown, the optical lens, from the object side to the image side, includes the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, sixth lens L6, and imaging plane IMA.

[0217] The first lens L1 has negative optical power, its object-side surface S1 is convex, and its image-side surface S2 is concave. The second lens L2 has negative optical power, its object-side surface S3 is convex, and its image-side surface S4 is concave. The third lens L3 has positive optical power, its object-side surface S6 is convex, and its image-side surface S7 is convex. The fourth lens L4 has positive optical power, its object-side surface S8 is concave, and its image-side surface S9 is convex. The fifth lens L5 has negative optical power, its object-side surface S10 is concave, and its image-side surface S11 is convex. The sixth lens L6 has positive optical power, its object-side surface S12 is convex, and its image-side surface S13 is convex. Light from the object passes sequentially through surfaces S1 to S13 and is finally imaged onto the imaging plane IMA.

[0218] In this example, the total effective focal length F of the optical lens is 11.092mm, the maximum field of view (FOV) of the optical lens is 101.600°, and the total length (TTL) of the optical lens is 69.580mm.

[0219] Table 5 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).

[0220]

[0221]

[0222] Table 5

[0223] In Example 5, the object-side and image-side surfaces of any one of the lenses L1 to L6 are not aspherical. However, when focusing on the resolving power of the optical lens, aspherical lenses can be selected from L1 to L6 as needed. The surface shape of the aspherical lens can be limited by, but is not limited to, the following aspherical formula:

[0224]

[0225] Example 6

[0226] like Figure 6 As shown, an optical lens of Example Six of this application is described. Figure 6 A schematic diagram of the optical lens structure of Example Six is ​​shown.

[0227] like Figure 6 As shown, the optical lens, from the object side to the image side, includes the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, sixth lens L6, and imaging plane IMA.

[0228] The first lens L1 has negative optical power, its object-side surface S1 is convex, and its image-side surface S2 is concave. The second lens L2 has negative optical power, its object-side surface S3 is convex, and its image-side surface S4 is concave. The third lens L3 has positive optical power, its object-side surface S6 is convex, and its image-side surface S7 is convex. The fourth lens L4 has positive optical power, its object-side surface S8 is concave, and its image-side surface S9 is convex. The fifth lens L5 has negative optical power, its object-side surface S10 is concave, and its image-side surface S11 is convex. The sixth lens L6 has positive optical power, its object-side surface S12 is convex, and its image-side surface S13 is convex. Light from the object passes sequentially through surfaces S1 to S13 and is finally imaged onto the imaging plane IMA.

[0229] In this example, the total effective focal length F of the optical lens is 11.092mm, the maximum field of view (FOV) of the optical lens is 101.600°, and the total length (TTL) of the optical lens is 69.585mm.

[0230] Table 6 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).

[0231]

[0232]

[0233] Table 6

[0234] In Example 6, the object-side and image-side surfaces of any one of the lenses from the first lens L1 to the sixth lens L6 are not aspherical. However, when focusing on the resolving power of the optical lens, the first lens L1 to the sixth lens L6 can be selected as aspherical lenses as needed. The surface shape of the aspherical lens can be limited by, but is not limited to, the following aspherical formula:

[0235]

[0236] Example 7

[0237] like Figure 7 As shown, an optical lens of Example Seven of this application is described. Figure 7 A schematic diagram of the optical lens structure of Example 7 is shown.

[0238] like Figure 7 As shown, the optical lens, from the object side to the image side, includes the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, sixth lens L6, and imaging plane IMA.

[0239] The first lens L1 has negative optical power, its object-side surface S1 is convex, and its image-side surface S2 is concave. The second lens L2 has negative optical power, its object-side surface S3 is convex, and its image-side surface S4 is concave. The third lens L3 has positive optical power, its object-side surface S6 is convex, and its image-side surface S7 is convex. The fourth lens L4 has positive optical power, its object-side surface S8 is concave, and its image-side surface S9 is convex. The fifth lens L5 has negative optical power, its object-side surface S10 is concave, and its image-side surface S11 is convex. The sixth lens L6 has positive optical power, its object-side surface S12 is convex, and its image-side surface S13 is concave. Light from the object passes sequentially through surfaces S1 to S13 and is finally imaged onto the imaging plane IMA.

[0240] In this example, the total effective focal length F of the optical lens is 11.274mm, the maximum field of view (FOV) of the optical lens is 101.600°, and the total length (TTL) of the optical lens is 74.119mm.

[0241] Table 7 shows the basic structural parameters of the optical lens in Example 7, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm).

[0242] Surf Radius Thickness Nd Vd 1 25.295 5.670 1.77 49.61 2 8.572 5.879 3 35.051 5.609 1.59 61.25 4 16.975 2.121 5 Infinity 2.533 6 150.000 10.391 1.85 23.79 7 -18.216 5.523 8 -328.007 7.349 1.62 63.41 9 -23.769 3.987 10 -17.002 5.000 1.59 61.25 11 -22.984 0.200 12 22.787 10.294 1.85 23.79 13 43.448 9.562 IMA infinity

[0243] Table 7

[0244] In Example 7, the object-side and image-side surfaces of any one of the lenses from the first lens L1 to the sixth lens L6 are not aspherical. However, when focusing on the resolving power of the optical lens, the first lens L1 to the sixth lens L6 can be selected as aspherical lenses as needed. The surface shape of the aspherical lens can be limited by, but is not limited to, the following aspherical formula:

[0245]

[0246] Example 8

[0247] like Figure 8 As shown, an optical lens of Example 8 of this application is described. Figure 8 A schematic diagram of the optical lens structure of Example 8 is shown.

[0248] like Figure 8 As shown, the optical lens, from the object side to the image side, includes the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, sixth lens L6, and imaging plane IMA.

[0249] The first lens L1 has negative optical power, its object-side surface S1 is convex, and its image-side surface S2 is concave. The second lens L2 has negative optical power, its object-side surface S3 is convex, and its image-side surface S4 is concave. The third lens L3 has positive optical power, its object-side surface S6 is convex, and its image-side surface S7 is convex. The fourth lens L4 has positive optical power, its object-side surface S8 is concave, and its image-side surface S9 is convex. The fifth lens L5 has negative optical power, its object-side surface S10 is concave, and its image-side surface S11 is convex. The sixth lens L6 has positive optical power, its object-side surface S12 is convex, and its image-side surface S13 is concave. Light from the object passes sequentially through surfaces S1 to S13 and is finally imaged onto the imaging plane IMA.

[0250] In this example, the total effective focal length F of the optical lens is 11.274mm, the maximum field of view (FOV) of the optical lens is 101.600°, and the total length (TTL) of the optical lens is 74.119mm.

[0251] Table 8 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).

[0252] Surf Radius Thickness Nd Vd 1 25.295 5.670 1.77 49.61 2 8.572 5.879 3 35.052 5.609 1.59 61.25 4 16.974 2.121 5 Infinity 2.533 6 150.000 10.391 1.85 23.79 7 -18.216 5.523 8 -328.020 7.349 1.62 63.41 9 -23.769 3.987 10 -17.002 5.000 1.59 61.25 11 -22.984 0.200 12 22.787 10.294 1.85 23.79 13 43.449 9.562 IMA infinity

[0253] Table 8

[0254] In Example 8, the object-side and image-side surfaces of any one of the lenses from the first lens L1 to the sixth lens L6 are not aspherical. However, when focusing on the resolving power of the optical lens, the first lens L1 to the sixth lens L6 can be selected as aspherical lenses as needed. The surface shape of the aspherical lens can be limited by, but is not limited to, the following aspherical formula:

[0255]

[0256] Example 9

[0257] like Figure 9 As shown, an optical lens of Example Nine of this application is described. Figure 9 A schematic diagram of the optical lens structure of Example 9 is shown.

[0258] like Figure 9 As shown, the optical lens, from the object side to the image side, includes the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, sixth lens L6, and imaging plane IMA.

[0259] The first lens L1 has negative optical power, its object-side surface S1 is convex, and its image-side surface S2 is concave. The second lens L2 has negative optical power, its object-side surface S3 is convex, and its image-side surface S4 is concave. The third lens L3 has positive optical power, its object-side surface S6 is convex, and its image-side surface S7 is convex. The fourth lens L4 has positive optical power, its object-side surface S8 is convex, and its image-side surface S9 is convex. The fifth lens L5 has positive optical power, its object-side surface S10 is concave, and its image-side surface S11 is convex. The sixth lens L6 has positive optical power, its object-side surface S12 is convex, and its image-side surface S13 is convex. Light from the object passes sequentially through surfaces S1 to S13 and is finally imaged onto the imaging plane IMA.

[0260] In this example, the total effective focal length F of the optical lens is 11.070mm, the maximum field of view (FOV) of the optical lens is 101.600°, and the total length (TTL) of the optical lens is 63.903mm.

[0261] Table 9 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).

[0262] Surf Radius Thickness Nd Vd 1 26.741 5.568 1.77 49.61 2 8.520 6.858 3 26.089 6.218 1.59 61.25 4 18.744 1.744 5 Infinity 0.484 6 150.000 8.127 1.85 23.79 7 -15.960 3.010 8 200.000 5.476 1.62 63.41 9 -41.099 3.987 10 -24.877 5.000 1.59 61.25 11 -24.836 0.200 12 33.835 9.844 1.85 23.79 13 -200.000 7.387 IMA infinity

[0263] Table 9

[0264] In Example 9, the object-side and image-side surfaces of any one of the lenses from the first lens L1 to the sixth lens L6 are not aspherical. However, when focusing on the resolving power of the optical lens, the first lens L1 to the sixth lens L6 can be selected as aspherical lenses as needed. The surface shape of the aspherical lens can be limited by, but is not limited to, the following aspherical formula:

[0265]

[0266] In summary, Examples 1 through 9 satisfy the relationships shown in Table 10.

[0267]

[0268]

[0269]

[0270] Table 10

[0271] Table 11 gives the effective focal length F of the optical lenses for Examples 1 to 9, and the effective focal lengths of each lens from F1 to F6, etc. (unit: mm).

[0272]

[0273]

[0274] Table 11

[0275] 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.

[0276] 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.

[0277] 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.

[0278] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An optical lens, characterized in that, The optical lens consists of six lenses with optical power, and the six lenses with optical power are arranged along the optical axis from the object side to the image side as follows: The first lens has negative optical power, the object side of the first lens is convex, and the image side of the first lens is concave. The second lens has negative optical power, the object side of the second lens is convex, and the image side of the second lens is concave. The third lens has positive optical power, the object side of the third lens is convex, and the image side of the third lens is convex. The fourth lens has positive optical power and its image-side surface is convex. The fifth lens has optical power, the object side of the fifth lens is concave, and the image side of the fifth lens is convex. The sixth lens has positive optical power and its object side is convex. The focal length F of the entire optical lens and the focal length F2 of the second lens of the optical lens satisfy the following condition: -15.056 ≤ F2 / F ≤ -4.5; 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 total optical length of the optical lens, i.e., the distance TTL from the object-side center of the first lens of the optical lens to the center of the imaging plane of the optical lens, satisfy the following: 0.033≤TTL / H / FOV≤0.

045. 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 total focal length F of the optical lens satisfy the following condition: 59.193≤(FOV×F) / H≤64.

2. The optical lens according to claim 1, characterized in that, The object-side surface of the fourth lens is convex.

3. The optical lens according to claim 1, characterized in that, The object-side surface of the fourth lens is concave.

4. The optical lens according to claim 1, characterized in that, The fifth lens has positive optical power.

5. The optical lens according to claim 1, characterized in that, The fifth lens has negative optical power.

6. The optical lens according to claim 1, characterized in that, The image-side surface of the sixth lens is concave.

7. The optical lens according to claim 1, characterized in that, The image-side surface of the sixth lens is convex.

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

9. The optical lens according to any one of claims 1 to 8, characterized in that, The total focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy the following condition: F / EPND≤1.

85.

10. The optical lens according to any one of claims 1 to 8, characterized in that, The total focal length F of the optical lens and the total optical length of the optical lens, i.e., the distance TTL from the object-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: 5.773≤TTL / F≤8.

11. The optical lens according to any one of claims 1 to 8, characterized in that, The image height H corresponding to the maximum field of view of the optical lens, the radian value θ of the maximum field of view of the optical lens, and the total optical length of the optical lens, i.e. the distance TTL from the object-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: 1.897≤TTL / H / θ≤2.

45.

12. The optical lens according to any one of claims 1 to 8, characterized in that, The optical back focal length of the optical lens, i.e., the center distance BFL from the image-side center of the sixth 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 object-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: 0.150≥BFL / TTL≥0.

05.

13. The optical lens according to any one of claims 1 to 8, 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 object side of the first lens corresponding to the maximum field of view of the optical lens satisfy the following: D / H / FOV≤0.

018.

14. The optical lens according to any one of claims 1 to 8, characterized in that, The total focal length F of the optical lens and the aperture D5 of the optical lens satisfy the following condition: 0.975 ≥ D5 / F ≥ 0.

7.

15. The optical lens according to any one of claims 1 to 8, characterized in that, The optical back focal length of the optical lens, i.e., the center distance BFL from the image side center of the sixth lens of the optical lens to the center of the imaging plane, the image height H corresponding to the maximum field of view of the optical lens, and the maximum light-transmitting aperture D13 of the image side of the sixth lens corresponding to the maximum field of view of the optical lens satisfy the following condition: 14.506≥D13*BFL / H≥8.

16. The optical lens according to any one of claims 1 to 8, characterized in that, The image height H corresponding to the maximum field of view of the optical lens and the maximum aperture D13 of the image side of the sixth lens corresponding to the maximum field of view of the optical lens satisfy the following condition: 1.394≥D13 / H≥1.

17. The optical lens according to any one of claims 1 to 8, characterized in that, The radius R10 of the object side of the fifth lens, the radius R11 of the image side of the fifth lens, and the center thickness d10 of the fifth lens satisfy the following condition: 1.6 ≥ R10 / (R11+d10) ≥ 0.

5.

18. The optical lens according to any one of claims 1 to 8, 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 total focal length F of the optical lens satisfy the following condition: 1.6≥F*tan(FOV / 2) / (H / 2)≥1.

19. The optical lens according to any one of claims 1 to 8, characterized in that, The image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the maximum aperture D of the object side of the first lens corresponding to the maximum field of view of the optical lens satisfy the following condition: D / H / F≤0.

16.

20. The optical lens according to any one of claims 1 to 8, characterized in that, The image height H corresponding to the maximum field of view 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 object side of the first lens corresponding to the maximum field of view of the optical lens satisfy the following condition: D / H / θ≤1.

1.

21. The optical lens according to any one of claims 1 to 8, 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 object side of the first lens corresponding to the maximum field of view of the optical lens satisfy the following condition: 0.700≥F*θ / D≥0.

6.

22. The optical lens according to any one of claims 1 to 8, characterized in that, The focal length F1 of the first lens of the optical lens satisfies the following relationship with the total focal length F of the optical lens: -0.8 ≥ F1 / F ≥ -2.

23. The optical lens according to any one of claims 1 to 8, characterized in that, The focal length F of the entire optical lens and the focal length F3 of the third lens of the optical lens satisfy the following condition: 0.5≤F3 / F≤2.

24. The optical lens according to any one of claims 1 to 8, characterized in that, The focal length F of the entire optical lens and the focal length F4 of the fourth lens of the optical lens satisfy the following condition: 5.107 ≥ F4 / F ≥ 1.

85.

25. The optical lens according to any one of claims 1 to 8, characterized in that, The focal length F of the entire optical lens and the focal length F5 of the fifth lens of the optical lens satisfy the following condition: 51.353 ≥ |F5 / F| ≥ 5.

26. The optical lens according to any one of claims 1 to 8, characterized in that, The focal length F of the entire optical lens and the focal length F6 of the sixth lens of the optical lens satisfy the following condition: 4.519 ≥ F6 / F ≥ 1.

85.

27. The optical lens according to any one of claims 1 to 8, characterized in that, The total focal length F of the optical lens and the air gap d4 between the second lens and the third lens satisfy the following condition: 0.201≤d4 / F≤0.

5.

28. The optical lens according to any one of claims 1 to 8, characterized in that, The focal length F1 of the first lens of the optical lens and the focal length F2 of the second lens of the optical lens satisfy the following condition: 0.114≤F1 / F2≤0.

5.

29. The optical lens according to any one of claims 1 to 8, characterized in that, The image height H corresponding to the maximum field of view of the optical lens and the total optical length of the optical lens, that is, the distance TTL from the object-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: 3.364≤TTL / H≤4.

5.

30. An electronic device, characterized in that, It includes an optical lens as described in any one of claims 1 to 29 and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

Images