Optical lens and electronic device

Abstract

This invention provides an optical lens and an electronic device. The optical lens, from a first side to a second side, sequentially includes: a first lens with positive optical power, wherein the first side of the first lens is convex and the second side is concave; a second lens with positive optical power, wherein the first side of the second lens is convex; a third lens with negative optical power, wherein the second side of the third lens is concave; a fourth lens with negative optical power, wherein the second side of the fourth lens is concave; a fifth lens with optical power, wherein the first side of the fifth lens is convex and the second side is concave; and a sixth lens with optical power, wherein the first side of the sixth lens is convex and the second side is concave. This invention solves the problems of large size, large CRA (Cost Averaging) and poor light transmission capability of existing optical lenses.

Description

Technical Field

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

[0002] In recent years, with the development of technology, the demand for optical lenses in daily life has been increasing, and optical lenses are being applied to more and more scenarios. For example, in the automotive industry, for driving safety, more accurate detection of the driving environment is required, and optical lenses have become key components for detecting information around the car. At the same time, with the rapid development of automotive autonomous driving assistance systems, the number of optical lenses used in automobiles is gradually increasing. In addition to commonly used visible light applications, night vision lenses used in dark environments are also attracting more and more attention. However, current optical lenses have various problems, such as: forward-looking night vision telescopes have a small detection angle and a large focal length, which also increases the overall size, conflicting with the limited space of automotive installation modules and hindering installation; moreover, the light transmission capacity of existing technologies is limited, making them unsuitable for dark environments at night or on rainy days; and large CRA (Crystal Reduction Amplitude) is not conducive to the light reception of the chip, affecting light transmission and hindering high resolution.

[0003] In other words, existing optical lenses suffer from problems such as large size, large CRA (Crystal Area Ratio), and poor light transmission. Summary of the Invention

[0004] The main objective of this invention is to provide an optical lens and an electronic device to solve the problems of large size, large CRA and poor light transmission capability of existing optical lenses.

[0005] To achieve the above objectives, according to one aspect of the present invention, an optical lens is provided, comprising, from a first side to a second side, the following components in sequence: a first lens having positive optical power, wherein a first side surface of the first lens is convex and a second side surface is concave; a second lens having positive optical power, wherein a first side surface of the second lens is convex; a third lens having negative optical power, wherein a second side surface of the third lens is concave; a fourth lens having negative optical power, wherein a second side surface of the fourth lens is concave; a fifth lens having optical power, wherein a first side surface of the fifth lens is convex and a second side surface is concave; and a sixth lens having optical power, wherein a first side surface of the sixth lens is convex and a second side surface is concave.

[0006] Furthermore, the second side surface of the second lens is concave.

[0007] Furthermore, the second side surface of the second lens is a convex surface.

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

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

[0010] Furthermore, the first side surface of the fourth lens is concave.

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

[0012] Furthermore, the fifth lens has positive optical power.

[0013] Furthermore, the fifth lens has negative optical power.

[0014] Furthermore, the sixth lens has negative optical power.

[0015] Furthermore, the sixth lens has positive optical power.

[0016] Furthermore, the second lens and the third lens are cemented together to form a cemented doublet lens.

[0017] Furthermore, the optical lens also includes an aperture stop, which is positioned between the third lens and the fourth lens.

[0018] Furthermore, the sixth lens is an aspherical lens.

[0019] Furthermore, the sixth lens is configured to be inverted.

[0020] Furthermore, the total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens of the optical lens to the center of the imaging plane of the optical lens, satisfies the following condition with respect to the total focal length F of the optical lens: TTL / F≤1.8.

[0021] Furthermore, the total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens of the optical lens to the center of the imaging plane of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view FOV of the optical lens satisfy the following: TTL / H / FOV≤0.5.

[0022] Furthermore, the total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens of the optical lens to the center of the imaging plane of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the following: TTL / H / θ≤8.

[0023] Furthermore, the total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens of the optical lens to the center of the imaging plane of the optical lens, satisfies the following condition with respect to the maximum aperture DMAX of the optical lens: TTL / DMAX≤2.0.

[0024] Furthermore, the total focal length F of the optical lens, the radian value θ of the maximum field of view of the optical lens, and the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens satisfy the following: (F*θ) / D≤0.9.

[0025] Furthermore, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view FOV of the optical lens satisfy the following condition: D / H / FOV≤0.15.

[0026] Furthermore, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the following relationship: D / H / θ≤6.8.

[0027] Furthermore, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the total focal length F of the optical lens satisfy the following condition: D / H / F≤0.1.

[0028] Furthermore, the total focal length F of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: F / H≤4.2.

[0029] Furthermore, the total focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy the following relationship: F / ENPD≤2.

[0030] Furthermore, the total focal length F of the optical lens, the entrance pupil diameter ENPD of the optical lens, and the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens satisfy the following relationship: F / ENPD / D≤0.1.

[0031] Furthermore, the aperture diameter DST of the optical lens and the total focal length F of the optical lens satisfy the following relationship: DST / F≤1.

[0032] Furthermore, the radius of curvature R9 of the first side of the fifth lens and the center thickness d9 of the fifth lens satisfy the following condition: 0.4≤R9 / (R9+d9)≤1.1.

[0033] Furthermore, the radius of curvature R1 of the first side of the first lens satisfies the following condition with respect to the total focal length F of the optical lens: 0.1 ≤ R1 / F.

[0034] Furthermore, the focal length F1 of the first lens satisfies the following condition with the total focal length F of the optical lens: 0.3 ≤ F1 / F.

[0035] Furthermore, the focal length F1 of the first lens and the focal length F2 of the second lens satisfy the following condition: 0.5 ≤ F1 / F2 ≤ 1.5.

[0036] Furthermore, the focal length F2 of the second lens and the focal length F3 of the third lens satisfy the following condition: 0.5 ≤ |F2 / F3| ≤ 1.8.

[0037] Furthermore, the radius of curvature R1 of the first side surface of the first lens, the radius of curvature R2 of the second side surface of the first lens, the aperture D1 of the first side surface of the first lens, and the aperture D2 of the image side surface of the first lens satisfy the following condition: (R1 / D1) / (R2 / D2)≤0.6.

[0038] Furthermore, the radius of curvature R8 of the second side of the fourth lens satisfies the following condition with respect to the focal length F of the entire optical lens: 0.001≤R8 / F.

[0039] Furthermore, the radius of curvature R10 of the second side of the fifth lens satisfies the following condition with respect to the focal length F of the entire optical lens: 0.001≤R10 / F.

[0040] Furthermore, the air gap d8 between the fourth and fifth lenses satisfies the following condition with respect to the total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens of the optical lens to the center of the imaging plane of the optical lens: 0.05≤d8 / TTL.

[0041] Furthermore, the maximum effective aperture D11 of the first side of the sixth lens corresponding to the maximum field of view of the optical lens satisfies the following condition: 0.5≤D11 / H.

[0042] Furthermore, the radius of curvature R8 of the second side surface of the fourth lens and the radius of curvature R9 of the first side surface of the fifth lens satisfy the following condition: R9 / R8≤5.

[0043] Furthermore, the maximum effective aperture D10 of the second side of the fifth lens corresponding to the maximum field of view of the optical lens, the air gap d10 between the fifth and sixth lenses, and the image height H corresponding to the maximum field of view of the optical lens satisfy the following relationship: 1≤D10*d10 / H.

[0044] According to another aspect of the present invention, an optical lens is provided, comprising, from a first side to a second side, the following in sequence: a first lens having positive optical power; a second lens having positive optical power; a third lens having negative optical power; a fourth lens having negative optical power; a fifth lens having optical power; and a sixth lens having optical power; wherein the radius of curvature R8 of the second side surface of the fourth lens satisfies the following condition with respect to the total focal length F of the optical lens: 0.001 ≤ R8 / F.

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

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

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

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

[0049] Furthermore, the first side surface of the third lens is concave, and the second side surface is concave.

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

[0051] Furthermore, the first side of the fourth lens is convex, and the second side is concave.

[0052] Furthermore, the fifth lens has positive optical power, and the first side of the fifth lens is convex and the second side is concave.

[0053] Furthermore, the fifth lens has negative optical power, and its first side surface is convex while its second side surface is concave.

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

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

[0056] Furthermore, the second lens and the third lens are cemented together to form a cemented doublet lens.

[0057] Furthermore, the optical lens also includes an aperture stop, which is positioned between the third lens and the fourth lens.

[0058] Furthermore, the sixth lens is an aspherical lens.

[0059] Furthermore, the sixth lens is configured to be inverted.

[0060] Furthermore, the total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens of the optical lens to the center of the imaging plane of the optical lens, satisfies the following condition with respect to the total focal length F of the optical lens: TTL / F≤1.8.

[0061] Furthermore, the total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens of the optical lens to the center of the imaging plane of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view FOV of the optical lens satisfy the following: TTL / H / FOV≤0.5.

[0062] Furthermore, the total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens of the optical lens to the center of the imaging plane of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the following: TTL / H / θ≤8.

[0063] Furthermore, the total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens of the optical lens to the center of the imaging plane of the optical lens, satisfies the following condition with respect to the maximum aperture DMAX of the optical lens: TTL / DMAX≤2.0.

[0064] Furthermore, the total focal length F of the optical lens, the radian value θ of the maximum field of view of the optical lens, and the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens satisfy the following: (F*θ) / D≤0.9.

[0065] Furthermore, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view FOV of the optical lens satisfy the following condition: D / H / FOV≤0.15.

[0066] Furthermore, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the following relationship: D / H / θ≤6.8.

[0067] Furthermore, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the total focal length F of the optical lens satisfy the following condition: D / H / F≤0.1.

[0068] Furthermore, the total focal length F of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: F / H≤4.2.

[0069] Furthermore, the total focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy the following relationship: F / ENPD≤2.

[0070] Furthermore, the total focal length F of the optical lens, the entrance pupil diameter ENPD of the optical lens, and the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens satisfy the following relationship: F / ENPD / D≤0.1.

[0071] Furthermore, the aperture diameter DST of the optical lens and the total focal length F of the optical lens satisfy the following relationship: DST / F≤1.

[0072] Furthermore, the radius of curvature R9 of the first side of the fifth lens and the center thickness d9 of the fifth lens satisfy the following condition: 0.4≤R9 / (R9+d9)≤1.1.

[0073] Furthermore, the radius of curvature R1 of the first side of the first lens satisfies the following condition with respect to the total focal length F of the optical lens: 0.1 ≤ R1 / F.

[0074] Furthermore, the focal length F1 of the first lens satisfies the following condition with the total focal length F of the optical lens: 0.3 ≤ F1 / F.

[0075] Furthermore, the focal length F1 of the first lens and the focal length F2 of the second lens satisfy the following condition: 0.5 ≤ F1 / F2 ≤ 1.5.

[0076] Furthermore, the focal length F2 of the second lens and the focal length F3 of the third lens satisfy the following condition: 0.5 ≤ |F2 / F3| ≤ 1.8.

[0077] Furthermore, the radius of curvature R1 of the first side surface of the first lens, the radius of curvature R2 of the second side surface of the first lens, the aperture D1 of the first side surface of the first lens, and the aperture D2 of the image side surface of the first lens satisfy the following condition: (R1 / D1) / (R2 / D2)≤0.6.

[0078] Furthermore, the radius of curvature R10 of the second side of the fifth lens satisfies the following condition with respect to the focal length F of the entire optical lens: 0.001≤R10 / F.

[0079] Furthermore, the air gap d8 between the fourth and fifth lenses satisfies the following condition with respect to the total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens of the optical lens to the center of the imaging plane of the optical lens: 0.05≤d8 / TTL.

[0080] Furthermore, the maximum effective aperture D11 of the first side of the sixth lens corresponding to the maximum field of view of the optical lens satisfies the following condition: 0.5≤D11 / H.

[0081] Furthermore, the radius of curvature R8 of the second side surface of the fourth lens and the radius of curvature R9 of the first side surface of the fifth lens satisfy the following condition: R9 / R8≤5.

[0082] Furthermore, the maximum effective aperture D10 of the second side of the fifth lens corresponding to the maximum field of view of the optical lens, the air gap d10 between the fifth and sixth lenses, and the image height H corresponding to the maximum field of view of the optical lens satisfy the following relationship: 1≤D10*d10 / H.

[0083] 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.

[0084] According to the technical solution of the present invention, the optical lens sequentially includes, from the first side to the second side, a first lens with positive optical power, a second lens with positive optical power, a third lens with negative optical power, a fourth lens with negative optical power, a fifth lens with optical power, and a sixth lens with optical power. The first side of the first lens is convex and the second side is concave; the first side of the second lens is convex; the second side of the third lens is concave; the second side of the fourth lens is concave; the first side of the fifth lens is convex and the second side is concave; and the first side of the sixth lens is convex and the second side is concave.

[0085] The first lens has positive optical power and converges light rays passing through it, facilitating a smooth transition of light. Its first side is designed as a convex surface, which maximizes the collection of light from a wide field of view into the rear optical system, effectively reducing the height at which light enters the second lens and decreasing the front aperture. Furthermore, in practical environments such as rain or snow, this design helps water droplets slide off, minimizing their impact on image formation. The second side of the first lens is concave, which rapidly diverges large-angle light rays passing through the first side, facilitating the rear optical system's correction of aberrations in large-angle light and achieving high resolution.

[0086] The second lens has positive optical power. Its first side is convex, while its second side can be either concave or convex. When the second side is concave, the second lens is a meniscus convex towards the first side, collecting light rays entering through the first lens. Positive optical power facilitates light convergence, ensuring a smooth transition of light rays to the rear, reducing the height of incident light rays, and thus decreasing the aperture of the rear lens. Convex first side of the second lens also converges light rays, and its positive optical power further reduces aberrations and improves image quality. When the second side is convex, edge field rays are deflected towards the center after passing through the second side of the first lens, which helps reduce the rear aperture of the system.

[0087] The third lens has negative optical power, further diverging the light. The first side of the third lens can be either convex or concave, while the second side is concave. When the first side of the third lens is convex and the second side is concave, it can collect as much light as possible from a large field of view into the rear optical system, allowing the diverged light to smoothly enter the rear and further smoothing the light path transition. When the first side of the third lens is concave, the negative optical power combined with the biconcave shape is beneficial for receiving light from the first side, resulting in smoother light exit and improved aberrations. It also facilitates subsequent bonding with the second lens, allowing the light passing through the second lens to smoothly transition to the image plane, reducing the overall length. This miniaturization allows for sufficient correction of various aberrations in the optical system, achieving high resolution.

[0088] The fourth lens has negative optical power and diverges light rays, separating central and peripheral rays from each field of view. The first side of the fourth lens can be either concave or convex, while the second side is concave. When the first side of the fourth lens is concave, its shape is biconcave, which helps to increase the aperture, improve system illumination, and facilitate the correction of aberrations in peripheral and central rays, achieving high resolution. When the first side of the fourth lens is convex, it converges light rays and adjusts the refraction angle, reducing chromatic aberration.

[0089] The fifth lens has either positive or negative optical power. Its first side is convex, and its second side is concave. When the fifth lens has positive optical power, it converges light rays. Properly setting the optical power can further deflect light rays along the optical axis and reduce the rear aperture. The convex first side converges diverging light rays, reducing the angle of incidence when they reach the image plane. The concave second side causes the converging light rays to diverge, further reducing the angle of incidence when they reach the image plane. When the fifth lens has negative optical power, it diverges light rays, providing a larger light-receiving surface for subsequent optical systems. Properly allocating the optical power helps reduce aberrations and improve optical performance.

[0090] The sixth lens has either negative or positive optical power. Its first side is convex, and its second side is concave. When the sixth lens has negative optical power, it diverges light rays. The convex and concave nature of its first and second sides helps adjust the optical path difference between the center and edges, reducing field curvature and achieving high resolution. When the sixth lens has positive optical power, it converges light rays, resulting in a smoother transition of light paths. This helps improve astigmatism and field curvature, enhancing the resolving power of the optical system. Furthermore, when the sixth lens is a positive optical power aspherical lens, it helps correct various aberrations, improves resolution, balances light paths, and reduces CRA (Critical Aberration).

[0091] This application employs six lenses. By optimizing the optical power and surface shape of each lens, the optical lens of this invention has at least one beneficial effect, such as small size, high light transmission, small FNO, short TTL, and small CRA. Attached Figure Description

[0092] 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:

[0093] Figure 1 A schematic diagram of the structure of an optical lens of Example 1 of the present invention is shown;

[0094] Figure 2 A schematic diagram of the structure of the optical lens of Example 2 of the present invention is shown;

[0095] Figure 3 A schematic diagram of the structure of the optical lens of Example 3 of the present invention is shown;

[0096] Figure 4 A schematic diagram of the structure of the optical lens of Example 4 of the present invention is shown;

[0097] Figure 5 A schematic diagram of the structure of the optical lens of Example 5 of the present invention is shown;

[0098] Figure 6 A schematic diagram of the structure of the optical lens of Example Six of the present invention is shown;

[0099] Figure 7 A schematic diagram of the structure of the optical lens of Example Seven of the present invention is shown;

[0100] Figure 8 A schematic diagram of the structure of the optical lens of Example 8 of the present invention is shown;

[0101] Figure 9 A schematic diagram of the structure of the optical lens of Example 9 of the present invention is shown;

[0102] Figure 10 A schematic diagram of the structure of the optical lens of Example 10 of the present invention is shown;

[0103] Figure 11 A schematic diagram of the structure of the optical lens of Example Eleven of the present invention is shown;

[0104] Figure 12 A schematic diagram of the structure of the optical lens of Example Twelve of the present invention is shown.

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

[0106] 1. First lens; S1. First side surface of the first lens; S2. Second side surface of the first lens; L2. Second lens; S3. First side surface of the second lens; S4. Second side surface of the second lens; L3. Third lens; S4. First side surface of the third lens;

[0107] S5, Second side of the third lens; STO, Aperture stop; L4, Fourth lens; S7, First side of the fourth lens; S8, Second side of the fourth lens; L5, Fifth lens; S9, First side of the fifth lens; S10, Second side of the fifth lens; L6, Sixth lens; S11, First side of the sixth lens; S12, Second side of the sixth lens; S13, First side of the protective glass; S14, Second side of the protective glass; IMA, Imaging plane. Detailed Implementation

[0108] 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.

[0109] 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.

[0110] 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.

[0111] 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.

[0112] 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.

[0113] In this paper, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the location of the convexity is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the location of the concaveness is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the first side is called the first side surface of the lens, and the surface of each lens closest to the second side is called the second side surface of the lens. The surface shape in the paraxial region can be determined according to the judgment method commonly known in the field, using the R value (R refers to the radius of curvature of the paraxial region, usually the R value in the lens database of optical software) to determine concavity or convexity. For the first side surface, when the R value is positive, it is determined to be convex, and when the R value is negative, it is determined to be concave; for the second side surface, when the R value is positive, it is determined to be concave, and when the R value is negative, it is determined to be convex.

[0114] It should be noted that the left side of the optical lens is the first side, and the right side of the optical lens is the second side.

[0115] In an exemplary embodiment, the optical lens provided in this application can be used as a vehicle-mounted lens. For a vehicle-mounted lens, the left side is the object side, and the right side is the image side; the first side is also the object side, and the second side is also the image side. Light rays from the object side can form an image on the image side.

[0116] When the optical lens of this application is applied to a projection lens or a radar transmitting lens, the left side is the imaging side and the right side is the image source side. In an exemplary embodiment, the optical lens provided by this application can be used as, for example, a projection lens or a lidar transmitting lens. In this case, the image side of the optical lens can be the image source side, and the object side can be the imaging side. Light rays from the image source side can be imaged on the imaging side, and the imaging surface of the optical lens is the image source surface.

[0117] To address the problems of large size, large CRA (Cryptographic Reduction), and poor light transmission capability in existing optical lenses, this invention provides an optical lens and an electronic device.

[0118] Example 1

[0119] like Figures 1 to 12 As shown, the optical lens, from the first side to the second side, includes a first lens with positive optical power, a second lens with positive optical power, a third lens with negative optical power, a fourth lens with negative optical power, a fifth lens with optical power, and a sixth lens with optical power. The first side of the first lens is convex and the second side is concave; the first side of the second lens is convex; the second side of the third lens is concave; the second side of the fourth lens is concave; the first side of the fifth lens is convex and the second side is concave; and the first side of the sixth lens is convex and the second side is concave.

[0120] The first lens has positive optical power and converges light rays passing through it, facilitating a smooth transition of light. Its first side is designed as a convex surface, which maximizes the collection of light from a wide field of view into the rear optical system, effectively reducing the height at which light enters the second lens and decreasing the front aperture. Furthermore, in practical environments such as rain or snow, this design helps water droplets slide off, minimizing their impact on image formation. The second side of the first lens is concave, which rapidly diverges large-angle light rays passing through the first side, facilitating the rear optical system's correction of aberrations in large-angle light and achieving high resolution.

[0121] The second lens has positive optical power. Its first side is convex, while its second side can be either concave or convex. When the second side is concave, the second lens is a meniscus convex towards the first side, collecting light rays entering through the first lens. Positive optical power facilitates light convergence, ensuring a smooth transition of light rays to the rear, reducing the height of incident light rays, and thus decreasing the aperture of the rear lens. Convex first side of the second lens also converges light rays, and its positive optical power further reduces aberrations and improves image quality. When the second side is convex, edge field rays are deflected towards the center after passing through the second side of the first lens, which helps reduce the rear aperture of the system.

[0122] The third lens has negative optical power, further diverging the light. The first side of the third lens can be either convex or concave, while the second side is concave. When the first side of the third lens is convex and the second side is concave, it can collect as much light as possible from a large field of view into the rear optical system, allowing the diverged light to smoothly enter the rear and further smoothing the light path transition. When the first side of the third lens is concave, the negative optical power combined with the biconcave shape is beneficial for receiving light from the first side, resulting in smoother light exit and improved aberrations. It also facilitates subsequent bonding with the second lens, allowing the light passing through the second lens to smoothly transition to the image plane, reducing the overall length. This miniaturization allows for sufficient correction of various aberrations in the optical system, achieving high resolution.

[0123] The fourth lens has negative optical power and diverges light rays, separating central and peripheral rays from each field of view. The first side of the fourth lens can be either concave or convex, while the second side is concave. When the first side of the fourth lens is concave, its shape is biconcave, which helps to increase the aperture, improve system illumination, and facilitate the correction of aberrations in peripheral and central rays, achieving high resolution. When the first side of the fourth lens is convex, it converges light rays and adjusts the refraction angle, reducing chromatic aberration.

[0124] The fifth lens has either positive or negative optical power. Its first side is convex, and its second side is concave. When the fifth lens has positive optical power, it converges light rays. Properly setting the optical power can further deflect light rays along the optical axis and reduce the rear aperture. The convex first side converges diverging light rays, reducing the angle of incidence when they reach the image plane. The concave second side causes the converging light rays to diverge, further reducing the angle of incidence when they reach the image plane. When the fifth lens has negative optical power, it diverges light rays, providing a larger light-receiving surface for subsequent optical systems. Properly allocating the optical power helps reduce aberrations and improve optical performance.

[0125] The sixth lens has either negative or positive optical power. Its first side is convex, and its second side is concave. When the sixth lens has negative optical power, it diverges light rays. The convex and concave nature of its first and second sides helps adjust the optical path difference between the center and edges, reducing field curvature and achieving high resolution. When the sixth lens has positive optical power, it converges light rays, resulting in a smoother transition of light paths. This helps improve astigmatism and field curvature, enhancing the resolving power of the optical system. Furthermore, when the sixth lens is a positive optical power aspherical lens, it helps correct various aberrations, improves resolution, balances light paths, and reduces CRA (Critical Aberration).

[0126] This application employs six lenses. By optimizing the optical power and surface shape of each lens, the optical lens of this invention has at least one beneficial effect, such as small size, high light transmission, small FNO, short TTL, and small CRA.

[0127] In this embodiment, the second side surface of the second lens is concave. The second lens is a meniscus shape convex towards the first side, collecting light rays entering through the first lens. Its positive optical power facilitates light convergence, allowing the light rays to smoothly transition to the rear, reducing the height of the incident light rays, and thus decreasing the aperture of the rear lens. The first side surface of the second lens is convex, which also converges light rays. The positive optical power of the second lens can further reduce aberrations and improve image quality.

[0128] In this embodiment, the second side surface of the second lens is convex. Edge field rays are deflected towards the center after passing through the second side surface of the first lens, which helps to reduce the rear port diameter of the system.

[0129] In this embodiment, the first side surface of the third lens is convex. When the first side surface of the third lens is convex and the second side surface is concave, it can collect as much light as possible from a large field of view into the rear optical system, allowing the diverging light to enter the rear smoothly and further smoothing the transition of the light path.

[0130] In this embodiment, the first side surface of the third lens is concave. The negative optical power combined with the biconcave shape is beneficial for receiving light from the first side, allowing for smoother light emission and improving aberrations. It also facilitates subsequent bonding with the second lens, ensuring a smooth transition of light rays from the second lens to the imaging plane and reducing the overall length. This miniaturization allows for thorough correction of various aberrations in the optical system, achieving high resolution.

[0131] In this embodiment, the first side surface of the fourth lens is concave. The fourth lens is biconcave, which is beneficial for increasing the aperture diameter, increasing the system illumination, and also facilitates the correction of aberrations between edge rays and center rays to achieve high resolution.

[0132] In this embodiment, the first side surface of the fourth lens is convex. This allows light to converge, and by adjusting the light refraction angle, chromatic aberration can be reduced.

[0133] In this embodiment, the fifth lens has positive optical power. It has a converging effect on light rays, and setting the optical power appropriately can further deflect the light rays towards the optical axis and also reduce the rear port diameter.

[0134] In this embodiment, the fifth lens has negative optical power. It has a diverging effect on light, giving the subsequent optical system a larger light-receiving surface. Reasonable allocation of optical power helps to reduce aberrations and improve optical performance.

[0135] In this embodiment, the sixth lens has negative optical power. It has a diverging effect on light. The first side of the sixth lens is convex and the second side is concave, which helps to adjust the optical path difference between the center and the edge, reduce field curvature, and achieve high resolution.

[0136] In this embodiment, the sixth lens has positive optical power. It converges light rays, resulting in a smooth transition of light paths, which helps to improve astigmatism and field curvature in imaging and enhance the resolving power of the optical system. At the same time, when the sixth lens is an aspherical lens with positive optical power, it helps to correct various aberrations, improve resolution, balance light paths, and reduce CRA.

[0137] In this embodiment, the second and third lenses are cemented together to form a cemented doublet lens. The use of a cemented doublet lens effectively eliminates the influence of ghosting on the optical lens, ensuring high resolution while eliminating ghosting. It also allows for sufficient correction of various aberrations in the optical system, improving resolution and optimizing optical performance such as distortion and CRA while maintaining a compact structure. The negative lens in the cemented doublet has a higher refractive index (relative to the positive lens), allowing light to converge effectively and smoothly at the final point, ensuring a stable arrival at the imaging plane and reducing overall weight and cost. The cemented doublet reduces light loss caused by inter-lens reflections. The combination of high and low refractive indices facilitates rapid transition of light rays, increases the aperture, and improves light transmission. Furthermore, it reduces the air gap between the two lenses, resulting in a compact overall optical lens structure and reducing tolerance sensitivity issues such as overall eccentricity of the lens units during assembly.

[0138] In this embodiment, the optical lens also includes an aperture stop, which is positioned between the third lens and the fourth lens. This arrangement facilitates the effective focusing of light entering the optical system, reduces the lens aperture at the front end of the optical system, and lowers the system's assembly sensitivity.

[0139] In this embodiment, the sixth lens is an aspherical lens. Using an aspherical lens, specifically the sixth lens, is beneficial for correcting system aberrations, improving resolution, and especially reducing aberrations over a large field of view.

[0140] In this embodiment, the sixth lens is inverted. Specifically, both the first and second sides of the sixth lens are inverted. By inverting the first and second sides of the sixth lens, the inversion helps to balance the aberrations of the central and peripheral fields of view, thereby improving resolution.

[0141] In this embodiment, the total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens to the center of the imaging plane of the optical lens, satisfies the following condition with respect to the total focal length F of the optical lens: TTL / F ≤ 1.8. Satisfying this condition results in a shorter total optical length for the same focal length, which is beneficial for miniaturization. Preferably, TTL / F ≤ 1.35.

[0142] In this embodiment, the total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens to the center of the imaging plane of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view (FOV) of the optical lens satisfy the following condition: TTL / H / FOV ≤ 0.5. Satisfying this condition allows for effective limitation of the total optical length when the imaging plane and field of view are the same, which is beneficial for miniaturization. Preferably, TTL / H / FOV ≤ 0.3. The maximum field of view (FOV) is related to the image height H and is the field of view corresponding to that image height.

[0143] In this embodiment, the total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens to the center of the imaging plane of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ of the maximum field of view of the optical lens, satisfy the condition: TTL / H / θ≤8. Satisfying this condition results in a shorter total optical length for the same image plane and angle, which is beneficial for miniaturization. Preferably, TTL / H / θ≤7.

[0144] In this embodiment, the total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens to the center of the imaging plane of the optical lens, satisfies the following condition with respect to the maximum aperture DMAX of the optical lens: TTL / DMAX ≤ 2.0. A smaller TTL / DMAX results in a more compact and smaller optical system, which is beneficial for miniaturization. Preferably, TTL / DMAX ≤ 1.8.

[0145] In this embodiment, the overall focal length F of the optical lens, the radian value θ of the maximum field of view of the optical lens, and the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens satisfy the condition: (F*θ) / D≤0.9. Satisfying this condition ensures a small front aperture, enabling miniaturization. Preferably, (F*θ) / D≤0.75.

[0146] In this embodiment, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view (FOV) of the optical lens satisfy the following relationship: D / H / FOV ≤ 0.15. Under the condition of a fixed angle, ensuring a small front aperture allows for miniaturization. Preferably, D / H / FOV ≤ 0.09. The maximum field of view (FOV) is related to the image height H, and refers to the field of view corresponding to that image height.

[0147] In this embodiment, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the following relationship: D / H / θ ≤ 6.8. Under the condition of a fixed angle, ensuring a small front aperture allows for miniaturization. Preferably, D / H / θ ≤ 5.4.

[0148] In this embodiment, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the total focal length F of the optical lens satisfy the following relationship: D / H / F ≤ 0.1. Under the condition of fixed focal length, the optical lens can be provided with the characteristics of large target surface and small aperture. Preferably, D / H / F ≤ 0.08.

[0149] In this embodiment, the total focal length F of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the following relationship: F / H ≤ 4.2. With a fixed imaging plane, a reasonable focal length allocation is beneficial for improving resolving power. Preferably, F / H ≤ 3.2.

[0150] In this embodiment, the overall focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy the following relationship: F / ENPD ≤ 2. A smaller FNO is beneficial for increasing light transmission, while a larger entrance pupil diameter helps improve relative illumination. Preferably, F / ENPD ≤ 1.5.

[0151] In this embodiment, the overall focal length F of the optical lens, the entrance pupil diameter ENPD of the optical lens, and the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens satisfy the following relationship: F / ENPD / D ≤ 0.1. This ensures a small aperture while maintaining high light transmission, thus achieving miniaturization of the optical lens. Preferably, F / ENPD / D ≤ 0.07.

[0152] In this embodiment, the aperture diameter (DST) of the optical lens and the total focal length (F) of the optical lens satisfy the condition: DST / F ≤ 1. A larger ratio of aperture diameter to effective focal length results in a larger aperture for the optical lens, which is beneficial for increasing the amount of light transmitted. Preferably, DST / F ≤ 0.8.

[0153] In this embodiment, the radius of curvature R9 of the first side surface of the fifth lens and the center thickness d9 of the fifth lens satisfy the following condition: 0.4 ≤ R9 / (R9+d9) ≤ 1.1. The special lens shape, close to a concentric circle, creates an optical path difference between the peripheral and central rays, diverging the central rays before they enter the rear optical system, which is beneficial for high resolution. Preferably, 0.5 ≤ R9 / (R9+d9) ≤ 0.9.

[0154] In this embodiment, the radius of curvature R1 of the first side surface of the first lens satisfies the condition 0.1 ≤ R1 / F with the overall focal length F of the optical lens. The first side surface of the first lens is convex and has a small radius of curvature, which helps to constrict the light rays at the front end, reducing the height at which the light enters the second lens, decreasing the front aperture, and achieving miniaturization. Preferably, 0.3 ≤ R1 / F.

[0155] In this embodiment, the focal length F1 of the first lens satisfies the condition 0.3 ≤ F1 / F with the total focal length F of the optical lens. By rationally allocating the focal length of the first lens, it helps to balance various aberrations and improve resolution. Preferably, 0.5 ≤ F1 / F.

[0156] In this embodiment, the focal length F1 of the first lens and the focal length F2 of the second lens satisfy the condition: 0.5 ≤ F1 / F2 ≤ 1.5. Setting the focal lengths of the first and second lenses to be similar not only helps to collect more light into the rear system, increasing luminous flux, but also makes the light transition smoother, improving resolution. Preferably, 0.7 ≤ F1 / F2 ≤ 1.2.

[0157] In this embodiment, the focal length F2 of the second lens and the focal length F3 of the third lens satisfy the following condition: 0.5 ≤ |F2 / F3| ≤ 1.8. By reasonably controlling the light path between the second and third lenses, aberrations caused by large-angle light rays entering through the second lens are reduced, while the overall structure becomes more compact, which is beneficial for miniaturization. Preferably, 0.7 ≤ |F2 / F3| ≤ 1.6.

[0158] In this embodiment, the radius of curvature R1 of the first side surface of the first lens, the radius of curvature R2 of the second side surface of the first lens, the aperture D1 of the first side surface of the first lens, and the aperture D2 of the image side surface of the first lens satisfy the following condition: (R1 / D1) / (R2 / D2)≤0.6. By limiting the radius of curvature and aperture of the two surfaces of the first lens, when the surface shape of the first lens is convex and concave, and when paired with positive optical power, a larger difference in the R-values ​​of the two surfaces and a closer similarity in the aperture values ​​of the two surfaces helps to converge light, suppress light emission, and make the front aperture of the optical lens smaller. Preferably, (R1 / D1) / (R2 / D2)≤0.4.

[0159] In this embodiment, the radius of curvature R8 of the second side surface of the fourth lens satisfies the condition 0.001 ≤ R8 / F with the focal length F of the entire optical lens. The second side surface of the fourth lens is concave, which facilitates the divergence of light rays, increasing the height of light reaching the imaging plane and achieving a large aperture effect. Preferably, 0.16 ≤ R8 / F.

[0160] In this embodiment, the radius of curvature R10 of the second side surface of the fifth lens satisfies the condition 0.001 ≤ R10 / F with the overall focal length F of the optical lens. The image-side surface of the fifth lens is set as a concave surface, causing the light rays to diverge, reducing the angle of incidence when the light rays reach the imaging surface, and achieving a small CRA (Curvature Radius Aspect Ratio). Preferably, 0.3 ≤ R10 / F.

[0161] In this embodiment, the air gap d8 between the fourth and fifth lenses satisfies the following condition with respect to the total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens to the center of the imaging plane of the optical lens: 0.05 ≤ d8 / TTL. By appropriately setting the distance between the fourth and fifth lenses, the light divergence tendency of their concave surfaces can be maximized, increasing the height reaching the imaging plane and achieving a large aperture effect. Preferably, 0.08 ≤ d8 / TTL.

[0162] In this embodiment, the maximum effective aperture D11 of the first side of the sixth lens corresponding to the maximum field of view of the optical lens satisfies the condition 0.5 ≤ D11 / H with respect to the image height H corresponding to the maximum field of view of the optical lens. With the same imaging surface and image height, a larger aperture in the last lens is beneficial for achieving a smaller CRA (Current Aspect Ratio). Preferably, 0.8 ≤ D11 / H.

[0163] In this embodiment, the radius of curvature R8 of the second side surface of the fourth lens and the radius of curvature R9 of the first side surface of the fifth lens satisfy the condition: R9 / R8≤5. Satisfying this condition is beneficial for converging the diverging light rays in front, reducing the incident angle when the light reaches the image plane, and facilitating the achievement of a small CRA (Curvature Radiation Aspect Ratio). Preferably, R9 / R8≤3.

[0164] In this embodiment, the maximum effective aperture D10 of the second side of the fifth lens corresponding to the maximum field of view of the optical lens, the air gap d10 between the fifth and sixth lenses, and the image height H corresponding to the maximum field of view of the optical lens satisfy the following relationship: 1 ≤ D10 * d10 / H. Under the condition of the same imaging plane and the same image height, reasonably setting the distance between the fifth and sixth lenses is beneficial for the principal ray to exit parallel onto the imaging plane, thereby facilitating the realization of a small CRA (Current Radiation Amplitude Reduction). Preferably, 1.7 ≤ D10 * d10 / H.

[0165] Example 2

[0166] like Figures 1 to 12 As shown, the optical lens, from the first side to the second side, sequentially includes: a first lens with positive optical power; a second lens with positive optical power; a third lens with negative optical power; a fourth lens with negative optical power; a fifth lens with optical power; and a sixth lens with optical power. The radius of curvature R8 of the second side of the fourth lens satisfies the condition 0.001 ≤ R8 / F with the overall focal length F of the optical lens. The second side of the fourth lens is concave, which facilitates the divergence of light rays, increasing the height reaching the imaging plane and achieving a large aperture effect. Preferably, 0.16 ≤ R8 / F.

[0167] In this embodiment, the first side of the first lens is convex, and the second side is concave. The first lens has positive optical power and converges light rays passing through it, which is beneficial for a smooth light transition. The convex design of the first side of the first lens can collect as much wide-field light as possible into the rear optical system, which helps to reduce the light entering the second lens and decrease the front aperture. In practical environments such as rain and snow, it also helps water droplets slide off, reducing their impact on imaging. The concave design of the second side of the first lens can quickly diverge large-angle light rays passing through the first side, which is beneficial for the rear optical system to correct aberrations of large-angle light rays and achieve high resolution.

[0168] In this embodiment, the first side of the second lens is convex, and the second side is concave. The second lens has a meniscus shape convex towards the first side, collecting light rays entering through the first lens. Its positive optical power facilitates light convergence, allowing the light rays to smoothly transition to the rear, reducing the height of the incident light rays, and thus decreasing the aperture of the rear lens. The convex first side of the second lens has a converging effect on light rays, and the positive optical power of the second lens can further reduce aberrations and improve image quality.

[0169] In this embodiment, both the first and second sides of the second lens are convex. The convex first side of the second lens has a converging effect on light, and the positive optical power of the second lens can further reduce aberrations and improve image quality. The convex second side causes edge field rays to bend towards the center after passing through the second side of the first lens, which helps to reduce the rear port diameter of the system.

[0170] In this embodiment, the first side of the third lens is convex, and the second side is concave. The third lens has negative optical power, further diverging the light. When the first side of the third lens is convex and the second side is concave, it can collect as much light as possible from a large field of view into the rear optical system, allowing the diverged light to smoothly enter the rear and further smoothing the transition of the light path.

[0171] In this embodiment, the first side surface of the third lens is concave, and the second side surface is also concave. The negative optical power combined with the biconcave shape is beneficial for receiving light from the first side, allowing for smoother light emission and improving aberrations. It also facilitates subsequent bonding with the second lens, ensuring a smooth transition of light rays from the second lens to the imaging plane and reducing the overall length. This miniaturization allows for sufficient correction of various aberrations in the optical system, achieving high resolution.

[0172] In this embodiment, the first side surface of the fourth lens is concave, and the second side surface is concave. Combined with negative optical power, it has a diverging effect on light, which can disperse the central and peripheral rays of each field of view. The fourth lens is biconcave, which is beneficial for increasing the aperture and the illumination of the system. At the same time, it is beneficial for correcting the aberrations of the peripheral and central rays to achieve high resolution.

[0173] In this embodiment, the first side of the fourth lens is convex, and the second side is concave. This arrangement allows light to converge, and by adjusting the light refraction angle, chromatic aberration can be reduced.

[0174] In this embodiment, the fifth lens has positive optical power, with a convex first side and a concave second side. Positive optical power has a converging effect on light rays; properly setting the optical power can further deflect light rays towards the optical axis and reduce the rear aperture. The convex first side of the fifth lens can converge diverging light rays, reducing the angle of incidence when the light reaches the imaging plane. The concave second side causes the converged light rays to diverge, further reducing the angle of incidence when the light reaches the imaging plane.

[0175] In this embodiment, the fifth lens has negative optical power. The first side of the fifth lens is convex, and the second side is concave. Negative optical power has a diverging effect on light, providing a larger light-receiving surface for subsequent optical systems. Proper allocation of optical power helps reduce aberrations and improve optical performance. The convex first side of the fifth lens can converge diverged light rays, reducing the angle of incidence when they reach the imaging plane; the concave second side causes the converged light rays to diverge, further reducing the angle of incidence when the light reaches the imaging plane.

[0176] In this embodiment, the sixth lens has negative optical power, with a convex first side and a concave second side. Negative optical power has a diverging effect on light, and the convex first side and concave second side of the sixth lens are beneficial for adjusting the optical path difference between the center and the edge, reducing field curvature, and achieving high resolution.

[0177] In this embodiment, the sixth lens has positive optical power, with a convex first side and a concave second side. Positive optical power converges light rays, resulting in a smooth transition of light paths, which helps improve astigmatism and field curvature in imaging, thereby enhancing the resolving power of the optical system. Furthermore, when the sixth lens is an aspherical lens with positive optical power, it helps correct various aberrations, improves resolution, balances light paths, and reduces CRA (Critical Aberration).

[0178] This application employs six lenses. By optimizing the optical power and surface shape of each lens, the optical lens of this invention has at least one beneficial effect, such as small size, high light transmission, small FNO, short TTL, and small CRA.

[0179] In this embodiment, the second and third lenses are cemented together to form a cemented doublet lens. The use of a cemented doublet lens effectively eliminates the influence of ghosting on the optical lens, ensuring high resolution while eliminating ghosting. It also allows for sufficient correction of various aberrations in the optical system, improving resolution and optimizing optical performance such as distortion and CRA while maintaining a compact structure. The negative lens in the cemented doublet has a higher refractive index (relative to the positive lens), allowing light to converge effectively and smoothly at the final point, ensuring a stable arrival at the imaging plane and reducing overall weight and cost. The cemented doublet reduces light loss caused by inter-lens reflections. The combination of high and low refractive indices facilitates rapid transition of light rays, increases the aperture, and improves light transmission. Furthermore, it reduces the air gap between the two lenses, resulting in a compact overall optical lens structure and reducing tolerance sensitivity issues such as overall eccentricity of the lens units during assembly.

[0180] In this embodiment, the optical lens also includes an aperture stop, which is positioned between the third lens and the fourth lens. This arrangement facilitates the effective focusing of light entering the optical system, reduces the lens aperture at the front end of the optical system, and lowers the system's assembly sensitivity.

[0181] In this embodiment, the sixth lens is an aspherical lens. Using an aspherical lens, specifically the sixth lens, is beneficial for correcting system aberrations, improving resolution, and especially reducing aberrations over a large field of view.

[0182] In this embodiment, the sixth lens is inverted. Specifically, both the first and second sides of the sixth lens are inverted. By inverting the first and second sides of the sixth lens, the inversion helps to balance the aberrations of the central and peripheral fields of view, thereby improving resolution.

[0183] In this embodiment, the total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens to the center of the imaging plane of the optical lens, satisfies the following condition with respect to the total focal length F of the optical lens: TTL / F ≤ 1.8. Satisfying this condition results in a shorter total optical length for the same focal length, which is beneficial for miniaturization. Preferably, TTL / F ≤ 1.35.

[0184] In this embodiment, the total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens to the center of the imaging plane of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view (FOV) of the optical lens satisfy the following condition: TTL / H / FOV ≤ 0.5. Satisfying this condition allows for effective limitation of the total optical length when the imaging plane and field of view are the same, which is beneficial for miniaturization. Preferably, TTL / H / FOV ≤ 0.3. The maximum field of view (FOV) is related to the image height H and is the field of view corresponding to that image height.

[0185] In this embodiment, the total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens to the center of the imaging plane of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ of the maximum field of view of the optical lens, satisfy the condition: TTL / H / θ≤8. Satisfying this condition results in a shorter total optical length for the same image plane and angle, which is beneficial for miniaturization. Preferably, TTL / H / θ≤7.

[0186] In this embodiment, the total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens to the center of the imaging plane of the optical lens, satisfies the following condition with respect to the maximum aperture DMAX of the optical lens: TTL / DMAX ≤ 2.0. A smaller TTL / DMAX results in a more compact and smaller optical system, which is beneficial for miniaturization. Preferably, TTL / DMAX ≤ 1.8.

[0187] In this embodiment, the overall focal length F of the optical lens, the radian value θ of the maximum field of view of the optical lens, and the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens satisfy the condition: (F*θ) / D≤0.9. Satisfying this condition ensures a small front aperture, enabling miniaturization. Preferably, (F*θ) / D≤0.75.

[0188] In this embodiment, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view (FOV) of the optical lens satisfy the following relationship: D / H / FOV ≤ 0.15. Under the condition of a fixed angle, ensuring a small front aperture allows for miniaturization. Preferably, D / H / FOV ≤ 0.09. The maximum field of view (FOV) is related to the image height H, and refers to the field of view corresponding to that image height.

[0189] In this embodiment, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the following relationship: D / H / θ ≤ 6.8. Under the condition of a fixed angle, ensuring a small front aperture allows for miniaturization. Preferably, D / H / θ ≤ 5.4.

[0190] In this embodiment, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the total focal length F of the optical lens satisfy the following relationship: D / H / F ≤ 0.1. Under the condition of fixed focal length, the optical lens can be provided with the characteristics of large target surface and small aperture. Preferably, D / H / F ≤ 0.08.

[0191] In this embodiment, the total focal length F of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the following relationship: F / H ≤ 4.2. With a fixed imaging plane, a reasonable focal length allocation is beneficial for improving resolving power. Preferably, F / H ≤ 3.2.

[0192] In this embodiment, the overall focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy the following relationship: F / ENPD ≤ 2. A smaller FNO is beneficial for increasing light transmission, while a larger entrance pupil diameter helps improve relative illumination. Preferably, F / ENPD ≤ 1.5.

[0193] In this embodiment, the overall focal length F of the optical lens, the entrance pupil diameter ENPD of the optical lens, and the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens satisfy the following relationship: F / ENPD / D ≤ 0.1. This ensures a small aperture while maintaining high light transmission, thus achieving miniaturization of the optical lens. Preferably, F / ENPD / D ≤ 0.07.

[0194] In this embodiment, the aperture diameter (DST) of the optical lens and the total focal length (F) of the optical lens satisfy the condition: DST / F ≤ 1. A larger ratio of aperture diameter to effective focal length results in a larger aperture for the optical lens, which is beneficial for increasing the amount of light transmitted. Preferably, DST / F ≤ 0.8.

[0195] In this embodiment, the radius of curvature R9 of the first side surface of the fifth lens and the center thickness d9 of the fifth lens satisfy the following condition: 0.4 ≤ R9 / (R9+d9) ≤ 1.1. The special lens shape, close to a concentric circle, creates an optical path difference between the peripheral and central rays, diverging the central rays before they enter the rear optical system, which is beneficial for high resolution. Preferably, 0.5 ≤ R9 / (R9+d9) ≤ 0.9.

[0196] In this embodiment, the radius of curvature R1 of the first side surface of the first lens satisfies the condition 0.1 ≤ R1 / F with the overall focal length F of the optical lens. The first side surface of the first lens is convex and has a small radius of curvature, which helps to constrict the light rays at the front end, reducing the height at which the light enters the second lens, decreasing the front aperture, and achieving miniaturization. Preferably, 0.3 ≤ R1 / F.

[0197] In this embodiment, the focal length F1 of the first lens satisfies the condition 0.3 ≤ F1 / F with the total focal length F of the optical lens. By rationally allocating the focal length of the first lens, it helps to balance various aberrations and improve resolution. Preferably, 0.5 ≤ F1 / F.

[0198] In this embodiment, the focal length F1 of the first lens and the focal length F2 of the second lens satisfy the condition: 0.5 ≤ F1 / F2 ≤ 1.5. Setting the focal lengths of the first and second lenses to be similar not only helps to collect more light into the rear system, increasing luminous flux, but also makes the light transition smoother, improving resolution. Preferably, 0.7 ≤ F1 / F2 ≤ 1.2.

[0199] In this embodiment, the focal length F2 of the second lens and the focal length F3 of the third lens satisfy the following condition: 0.5 ≤ |F2 / F3| ≤ 1.8. By reasonably controlling the light path between the second and third lenses, aberrations caused by large-angle light rays entering through the second lens are reduced, while the overall structure becomes more compact, which is beneficial for miniaturization. Preferably, 0.7 ≤ |F2 / F3| ≤ 1.6.

[0200] In this embodiment, the radius of curvature R1 of the first side surface of the first lens, the radius of curvature R2 of the second side surface of the first lens, the aperture D1 of the first side surface of the first lens, and the aperture D2 of the image side surface of the first lens satisfy the following condition: (R1 / D1) / (R2 / D2)≤0.6. By limiting the radius of curvature and aperture of the two surfaces of the first lens, when the surface shape of the first lens is convex and concave, and when paired with positive optical power, a larger difference in the R-values ​​of the two surfaces and a closer similarity in the aperture values ​​of the two surfaces helps to converge light, suppress light emission, and make the front aperture of the optical lens smaller. Preferably, (R1 / D1) / (R2 / D2)≤0.4.

[0201] In this embodiment, the radius of curvature R10 of the second side surface of the fifth lens satisfies the condition 0.001 ≤ R10 / F with the overall focal length F of the optical lens. The image-side surface of the fifth lens is set as a concave surface, causing the light rays to diverge, reducing the angle of incidence when the light rays reach the imaging surface, and achieving a small CRA (Curvature Radius Aspect Ratio). Preferably, 0.3 ≤ R10 / F.

[0202] In this embodiment, the air gap d8 between the fourth and fifth lenses satisfies the following condition with respect to the total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens to the center of the imaging plane of the optical lens: 0.05 ≤ d8 / TTL. By appropriately setting the distance between the fourth and fifth lenses, the light divergence tendency of their concave surfaces can be maximized, increasing the height reaching the imaging plane and achieving a large aperture effect. Preferably, 0.08 ≤ d8 / TTL.

[0203] In this embodiment, the maximum effective aperture D11 of the first side of the sixth lens corresponding to the maximum field of view of the optical lens satisfies the condition 0.5 ≤ D11 / H with respect to the image height H corresponding to the maximum field of view of the optical lens. With the same imaging surface and image height, a larger aperture in the last lens is beneficial for achieving a smaller CRA (Current Aspect Ratio). Preferably, 0.8 ≤ D11 / H.

[0204] In this embodiment, the radius of curvature R8 of the second side surface of the fourth lens and the radius of curvature R9 of the first side surface of the fifth lens satisfy the condition: R9 / R8≤5. Satisfying this condition is beneficial for converging the diverging light rays in front, reducing the incident angle when the light reaches the image plane, and facilitating the achievement of a small CRA (Curvature Radiation Aspect Ratio). Preferably, R9 / R8≤3.

[0205] In this embodiment, the maximum effective aperture D10 of the second side of the fifth lens corresponding to the maximum field of view of the optical lens, the air gap d10 between the fifth and sixth lenses, and the image height H corresponding to the maximum field of view of the optical lens satisfy the following relationship: 1 ≤ D10 * d10 / H. Under the condition of the same imaging plane and the same image height, reasonably setting the distance between the fifth and sixth lenses is beneficial for the principal ray to exit parallel onto the imaging plane, thereby facilitating the realization of a small CRA (Current Radiation Amplitude Reduction). Preferably, 1.7 ≤ D10 * d10 / H.

[0206] Optionally, the aforementioned optical lens may also include a color filter for correcting color deviation and a protective glass for protecting the photosensitive element located on the imaging surface.

[0207] The optical lens in this application can employ multiple lenses, such as the six lenses mentioned above. This application does not specifically limit the number of spherical and aspherical lenses; when image quality is a primary concern, the number of aspherical lenses can be increased. The characteristic of an aspherical lens is that its curvature changes continuously from the lens center to the lens periphery. Unlike a spherical lens, which has a constant curvature from the lens center to the lens periphery, an aspherical lens has better curvature radius characteristics, offering advantages in improving distortion aberrations and astigmatism. By using aspherical lenses, aberrations occurring during imaging can be eliminated as much as possible, thereby improving image quality.

[0208] In this exemplary embodiment, the solution is not limited to plastic or glass for the lenses. If temperature performance is a primary concern, the first, second, third, fourth, fifth, and sixth lenses can all be glass lenses. Optical lenses made of glass can suppress the shift in the back focus of the optical lens due to temperature changes, thereby improving system stability. Simultaneously, using glass avoids lens blurring caused by high and low temperature variations in the operating environment, thus preventing the normal use of the optical lens. For example, an all-glass optical lens has a wider temperature range, maintaining stable optical performance within the range of -40℃ to 105℃. Specifically, when resolution and reliability are of primary concern, the first to sixth lenses can all be aspherical glass lenses. Of course, in applications with lower temperature stability requirements, the first to sixth lenses in the optical lens can also be made of plastic. Using plastic to make optical lenses can effectively reduce manufacturing costs. Alternatively, the first to sixth lenses in the optical lens can also be made of a combination of plastic and glass.

[0209] 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.

[0210] 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.

[0211] 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.

[0212] It should be noted that any of the examples one through twelve below are applicable to all embodiments of this application.

[0213] Example 1

[0214] like Figure 1 The diagram shown is a schematic of the optical lens structure of Example 1.

[0215] like Figure 1 As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, third lens L3, aperture stop STO, fourth lens L4, fifth lens L5, sixth lens L6, first side surface of protective glass S13, second side surface of protective glass S14, and imaging surface IMA.

[0216] The first lens L1 has positive optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has positive optical power, its first side surface S3 is convex, and its second side surface S4 is convex. The third lens L3 has negative optical power, its first side surface S4 is concave, and its second side surface S5 is concave. The fourth lens L4 has negative optical power, its first side surface S7 is concave, and its second side surface S8 is concave. The fifth lens L5 has positive optical power, its first side surface S9 is convex, and its second side surface S10 is concave. The sixth lens L6 has positive optical power, its first side surface S11 is convex, and its second side surface S12 is concave. Light from the first side passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging plane IMA. Since the second lens L2 and the third lens L3 are cemented together to form a cemented doublet lens, the second side surface S4 of the second lens and the first side surface S4 of the third lens are the same surface.

[0217] In this example, the total effective focal length F of the optical lens is 34.664mm, the maximum field of view (FOV) of the optical lens is 25.200°, and the total length (TTL) of the optical lens is 44.870mm.

[0218] 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).

[0219] Surf Radius Thickness Nd Vd 1 23.705 6.549 2.00 25.43 2 117.794 0.100 3 19.677 4.841 1.57 71.30 4 -1785.682 1.213 1.92 18.90 5 25.293 1.903 STO Infinity 0.313 7 -2385.045 0.817 1.49 70.44 8 12.178 10.880 9 16.636 6.825 2.00 25.43 10 22.343 3.643 11 18.612 4.357 1.59 61.15 12 29.938 2.494 13 Infinity 0.799 1.52 64.20 14 Infinity 0.135 IMA / /

[0220] Table 1

[0221] In Example 1, the surface shape of the aspherical lens can be defined using, but is not limited to, the following aspherical formula:

[0222]

[0223] Where x is the distance vector from the vertex of the aspherical surface at a height h along the optical axis; c is the paraxial curvature of the aspherical surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient; A, B, C, D, and E are all higher-order coefficients. Table 2 below shows the conic coefficient k and the higher-order coefficients A, B, C, D, E, and F that can be used for the aspherical lens surfaces S11 and S12 in Example 1.

[0224] Higher order terms / 4 6 8 10 12 14 Surf K A B C D E F 11 -2.956 -9.5438E-05 3.8957E-07 -4.5381E-08 2.9552E-10 3.3536E-12 -2.9526E-14 12 9.691 -1.4704E-04 -2.6055E-06 2.6234E-08 -2.2754E-09 4.8555E-11 -3.0141E-13

[0225] Table 2

[0226] Example 2

[0227] like Figure 2 The diagram shown is a schematic of the optical lens structure for Example 2. For the sake of brevity, descriptions similar to those in Example 1 will be omitted in this example and the following examples.

[0228] like Figure 2 As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, third lens L3, aperture stop STO, fourth lens L4, fifth lens L5, sixth lens L6, first side surface of protective glass S13, second side surface of protective glass S14, and imaging surface IMA.

[0229] The first lens L1 has positive optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has positive optical power, its first side surface S3 is convex, and its second side surface S4 is convex. The third lens L3 has negative optical power, its first side surface S4 is concave, and its second side surface S5 is concave. The fourth lens L4 has negative optical power, its first side surface S7 is concave, and its second side surface S8 is concave. The fifth lens L5 has positive optical power, its first side surface S9 is convex, and its second side surface S10 is concave. The sixth lens L6 has positive optical power, its first side surface S11 is convex, and its second side surface S12 is concave. Light from the first side passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging plane IMA. Since the second lens L2 and the third lens L3 are cemented together to form a cemented doublet lens, the second side surface S4 of the second lens and the first side surface S4 of the third lens are the same surface.

[0230] In this example, the total effective focal length F of the optical lens is 34.872mm, the maximum field of view (FOV) of the optical lens is 25.200°, and the total length (TTL) of the optical lens is 45.136mm.

[0231] Table 3 shows the basic structural parameters of the optical lens in Example 2, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm).

[0232] Surf Radius Thickness Nd Vd 1 23.847 6.588 2.00 25.43 2 118.502 0.101 3 19.795 4.870 1.57 71.30 4 -1796.407 1.221 1.92 18.90 5 25.445 1.915 STO Infinity 0.315 7 -2399.370 0.822 1.49 70.44 8 12.251 10.946 9 16.736 6.866 2.00 25.43 10 22.477 3.665 11 18.724 4.384 1.59 61.15 12 30.117 2.509 13 Infinity 0.804 1.52 64.20 14 Infinity 0.133 IMA / /

[0233] Table 3

[0234] Table 4 below shows the conic coefficient k and the coefficients A, B, C, D, E, and F of each higher-order term that can be used for the aspherical lens surfaces S11 and S12 in Example 2.

[0235] Higher order terms / 4 6 8 10 12 14 Surf K A B C D E F 11 -2.956 -8.6753E-05 3.8783E-07 -4.3712E-08 2.8002E-10 3.1398E-12 -2.7315E-14 12 9.691 -1.3450E-04 -2.9112E-06 2.5446E-08 -2.1560E-09 4.5460E-11 -2.7884E-13

[0236] Table 4

[0237] Example 3

[0238] like Figure 3 The diagram shown is a schematic of the optical lens structure in Example 3.

[0239] like Figure 3 As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, third lens L3, aperture stop STO, fourth lens L4, fifth lens L5, sixth lens L6, first side surface of protective glass S13, second side surface of protective glass S14, and imaging surface IMA.

[0240] The first lens L1 has positive optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has positive optical power, its first side surface S3 is convex, and its second side surface S4 is concave. The third lens L3 has negative optical power, its first side surface S4 is convex, and its second side surface S5 is concave. The fourth lens L4 has negative optical power, its first side surface S7 is concave, and its second side surface S8 is concave. The fifth lens L5 has positive optical power, its first side surface S9 is convex, and its second side surface S10 is concave. The sixth lens L6 has positive optical power, its first side surface S11 is convex, and its second side surface S12 is concave. Light from the first side passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging plane IMA. Since the second lens L2 and the third lens L3 are cemented together to form a cemented doublet lens, the second side surface S4 of the second lens and the first side surface S4 of the third lens are the same surface.

[0241] In this example, the total effective focal length F of the optical lens is 34.650mm, the maximum field of view (FOV) of the optical lens is 25.200°, and the total length (TTL) of the optical lens is 44.888mm.

[0242] Table 5 shows the basic structural parameters of the optical lens in Example 3, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm).

[0243] Surf Radius Thickness Nd Vd 1 23.801 6.523 2.00 25.43 2 118.979 0.100 3 19.803 4.842 1.57 71.30 4 1761.640 1.213 1.92 18.90 5 25.634 1.895 STO Infinity 0.303 7 -730.437 0.806 1.49 70.44 8 12.286 10.943 9 16.598 6.873 2.00 25.43 10 22.383 3.710 11 19.283 4.446 1.59 61.15 12 29.543 2.382 13 Infinity 0.800 1.52 64.20 14 Infinity 0.052 IMA / /

[0244] Table 5

[0245] Table 6 below shows the conic coefficient k and the coefficients A, B, C, D, E, and F of each higher-order term that can be used for the aspherical lens surfaces S11 and S12 in Example 3.

[0246] Higher order terms / 4 6 8 10 12 14 Surf K A B C D E F 11 -3.105 -1.0509E-04 2.2962E-07 -4.5860E-08 3.1091E-10 3.7974E-12 -3.1302E-14 12 9.478 -1.6004E-04 -2.7761E-06 2.6569E-08 -2.2499E-09 4.8136E-11 -2.9391E-13

[0247] Table 6

[0248] Example 4

[0249] like Figure 4 The diagram shown is a schematic of the optical lens structure of Example 4.

[0250] like Figure 4 As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, third lens L3, aperture stop STO, fourth lens L4, fifth lens L5, sixth lens L6, first side surface of protective glass S13, second side surface of protective glass S14, and imaging surface IMA.

[0251] The first lens L1 has positive optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has positive optical power, its first side surface S3 is convex, and its second side surface S4 is concave. The third lens L3 has negative optical power, its first side surface S4 is convex, and its second side surface S5 is concave. The fourth lens L4 has negative optical power, its first side surface S7 is concave, and its second side surface S8 is concave. The fifth lens L5 has positive optical power, its first side surface S9 is convex, and its second side surface S10 is concave. The sixth lens L6 has positive optical power, its first side surface S11 is convex, and its second side surface S12 is concave. Light from the first side passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging plane IMA. Since the second lens L2 and the third lens L3 are cemented together to form a cemented doublet lens, the second side surface S4 of the second lens and the first side surface S4 of the third lens are the same surface.

[0252] In this example, the total effective focal length F of the optical lens is 34.621mm, the maximum field of view (FOV) of the optical lens is 25.200°, and the total length (TTL) of the optical lens is 44.835mm.

[0253] Table 7 shows the basic structural parameters of the optical lens in Example 4, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm).

[0254]

[0255]

[0256] Table 7

[0257] Table 8 below shows the conic coefficient k and the coefficients A, B, C, D, E, and F of each higher-order term that can be used for the aspherical lens surfaces S11 and S12 in Example 4.

[0258] Higher order terms / 4 6 8 10 12 14 Surf K A B C D E F 11 -3.257 -1.1515E-04 2.5311E-07 -4.5813E-08 3.1085E-10 3.7923E-12 -3.1456E-14 12 9.487 -1.8325E-04 -2.7829E-06 2.6407E-08 -2.2508E-09 4.8141E-11 -2.9366E-13

[0259] Table 8

[0260] Example 5

[0261] like Figure 5 The diagram shown is a schematic of the optical lens structure of Example 5.

[0262] like Figure 5 As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, third lens L3, aperture stop STO, fourth lens L4, fifth lens L5, sixth lens L6, first side surface of protective glass S13, second side surface of protective glass S14, and imaging surface IMA.

[0263] The first lens L1 has positive optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has positive optical power, its first side surface S3 is convex, and its second side surface S4 is convex. The third lens L3 has negative optical power, its first side surface S4 is concave, and its second side surface S5 is concave. The fourth lens L4 has negative optical power, its first side surface S7 is convex, and its second side surface S8 is concave. The fifth lens L5 has positive optical power, its first side surface S9 is convex, and its second side surface S10 is concave. The sixth lens L6 has positive optical power, its first side surface S11 is convex, and its second side surface S12 is concave. Light from the first side passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging plane IMA. Since the second lens L2 and the third lens L3 are cemented together to form a cemented doublet lens, the second side surface S4 of the second lens and the first side surface S4 of the third lens are the same surface.

[0264] In this example, the total effective focal length F of the optical lens is 34.382mm, the maximum field of view (FOV) of the optical lens is 25.200°, and the total length (TTL) of the optical lens is 44.822mm.

[0265] Table 9 shows the basic structural parameters of the optical lens in Example 5, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm).

[0266]

[0267]

[0268] Table 9

[0269] Table 10 below shows the conic coefficient k and the coefficients A, B, C, D, E, and F of each higher-order term that can be used for the aspherical lens surfaces S11 and S12 in Example 5.

[0270] Higher order terms / 4 6 8 10 12 14 Surf K A B C D E F 11 -8.431 -1.5544E-04 -1.2485E-07 -4.4755E-08 3.6314E-10 3.9102E-12 -4.1808E-14 12 22.062 -1.9139E-04 -3.3837E-06 4.9696E-08 -2.3828E-09 4.9390E-11 -3.2201E-13

[0271] Table 10

[0272] Example 6

[0273] like Figure 6 The diagram shown is a schematic of the optical lens structure of Example 6.

[0274] like Figure 6 As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, third lens L3, aperture stop STO, fourth lens L4, fifth lens L5, sixth lens L6, first side surface of protective glass S13, second side surface of protective glass S14, and imaging surface IMA.

[0275] The first lens L1 has positive optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has positive optical power, its first side surface S3 is convex, and its second side surface S4 is convex. The third lens L3 has negative optical power, its first side surface S4 is concave, and its second side surface S5 is concave. The fourth lens L4 has negative optical power, its first side surface S7 is convex, and its second side surface S8 is concave. The fifth lens L5 has positive optical power, its first side surface S9 is convex, and its second side surface S10 is concave. The sixth lens L6 has positive optical power, its first side surface S11 is convex, and its second side surface S12 is concave. Light from the first side passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging plane IMA. Since the second lens L2 and the third lens L3 are cemented together to form a cemented doublet lens, the second side surface S4 of the second lens and the first side surface S4 of the third lens are the same surface.

[0276] In this example, the total effective focal length F of the optical lens is 34.380mm, the maximum field of view (FOV) of the optical lens is 25.200°, and the total length (TTL) of the optical lens is 44.813mm.

[0277] Table 11 shows the basic structural parameters of the optical lens in Example 6, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm).

[0278]

[0279] Table 11

[0280] Table 12 below shows the conic coefficient k and the coefficients A, B, C, D, E, and F of each higher-order term that can be used for the aspherical lens surfaces S11 and S12 in Example 6.

[0281]

[0282] Example 7

[0283] like Figure 7 The diagram shown is a schematic of the optical lens structure of Example 7.

[0284] like Figure 7 As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, third lens L3, aperture stop STO, fourth lens L4, fifth lens L5, sixth lens L6, first side surface of protective glass S13, second side surface of protective glass S14, and imaging surface IMA.

[0285] The first lens L1 has positive optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has positive optical power, its first side surface S3 is convex, and its second side surface S4 is concave. The third lens L3 has negative optical power, its first side surface S4 is convex, and its second side surface S5 is concave. The fourth lens L4 has negative optical power, its first side surface S7 is convex, and its second side surface S8 is concave. The fifth lens L5 has positive optical power, its first side surface S9 is convex, and its second side surface S10 is concave. The sixth lens L6 has positive optical power, its first side surface S11 is convex, and its second side surface S12 is concave. Light from the first side passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging plane IMA. Since the second lens L2 and the third lens L3 are cemented together to form a cemented doublet lens, the second side surface S4 of the second lens and the first side surface S4 of the third lens are the same surface.

[0286] In this example, the total effective focal length F of the optical lens is 34.502mm, the maximum field of view (FOV) of the optical lens is 25.200°, and the total length (TTL) of the optical lens is 44.629mm.

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

[0288]

[0289] Table 13

[0290] Table 14 below shows the conic coefficient k and the coefficients A, B, C, D, E, and F of each higher-order term that can be used for the aspherical lens surfaces S11 and S12 in Example 7.

[0291]

[0292] Example 8

[0293] like Figure 8 The diagram shown is a schematic of the optical lens structure of Example 8.

[0294] like Figure 8 As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, third lens L3, aperture stop STO, fourth lens L4, fifth lens L5, sixth lens L6, first side surface of protective glass S13, second side surface of protective glass S14, and imaging surface IMA.

[0295] The first lens L1 has positive optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has positive optical power, its first side surface S3 is convex, and its second side surface S4 is concave. The third lens L3 has negative optical power, its first side surface S4 is convex, and its second side surface S5 is concave. The fourth lens L4 has negative optical power, its first side surface S7 is convex, and its second side surface S8 is concave. The fifth lens L5 has positive optical power, its first side surface S9 is convex, and its second side surface S10 is concave. The sixth lens L6 has positive optical power, its first side surface S11 is convex, and its second side surface S12 is concave. Light from the first side passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging plane IMA. Since the second lens L2 and the third lens L3 are cemented together to form a cemented doublet lens, the second side surface S4 of the second lens and the first side surface S4 of the third lens are the same surface.

[0296] In this example, the total effective focal length F of the optical lens is 34.414mm, the maximum field of view (FOV) of the optical lens is 25.200°, and the total length (TTL) of the optical lens is 44.583mm.

[0297] Table 15 shows the basic structural parameters of the optical lens of Example 8, where the units for radius of curvature (Radius) and thickness (Thickness / Distance) are millimeters (mm).

[0298] Surf Radius Thickness Nd Vd 1 24.023 6.104 2.00 25.43 2 117.181 0.100 3 20.017 4.592 1.57 71.30 4 1696.000 1.216 1.92 18.90 5 25.577 2.001 STO Infinity 0.509 7 2152.308 0.820 1.49 70.44 8 13.184 10.287 9 16.534 7.048 2.00 25.43 10 21.662 3.537 11 23.975 5.026 1.59 61.15 12 37.772 2.458 13 Infinity 0.800 1.52 64.20 14 Infinity 0.086 IMA / /

[0299] Table 15

[0300] Table 16 below shows the conic coefficient k and the coefficients A, B, C, D, E, and F of each higher-order term that can be used for the aspherical lens surfaces S11 and S12 in Example 8.

[0301] Higher order terms / 4 6 8 10 12 14 Surf K A B C D E F 11 -9.750 -1.3025E-04 -7.1570E-08 -4.6389E-08 3.8874E-10 3.9534E-12 -4.471E-14 12 16.229 -1.9482E-04 -3.0853E-06 4.2829E-08 -2.2800E-09 4.7751E-11 -3.0684E-13

[0302] Table 16

[0303] Example 9

[0304] like Figure 9 The diagram shown is a schematic of the optical lens structure of Example 9.

[0305] like Figure 9 As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, third lens L3, aperture stop STO, fourth lens L4, fifth lens L5, sixth lens L6, first side surface of protective glass S13, second side surface of protective glass S14, and imaging surface IMA.

[0306] The first lens L1 has positive optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has positive optical power, its first side surface S3 is convex, and its second side surface S4 is concave. The third lens L3 has negative optical power, its first side surface S4 is convex, and its second side surface S5 is concave. The fourth lens L4 has negative optical power, its first side surface S7 is convex, and its second side surface S8 is concave. The fifth lens L5 has negative optical power, its first side surface S9 is convex, and its second side surface S10 is concave. The sixth lens L6 has positive optical power, its first side surface S11 is convex, and its second side surface S12 is concave. Light from the first side passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging plane IMA. Since the second lens L2 and the third lens L3 are cemented together to form a cemented doublet lens, the second side surface S4 of the second lens and the first side surface S4 of the third lens are the same surface.

[0307] In this example, the total effective focal length F of the optical lens is 33.753mm, the maximum field of view (FOV) of the optical lens is 25.200°, and the total length (TTL) of the optical lens is 41.410mm.

[0308] Table 17 shows the basic structural parameters of the optical lens of Example 9, where the units for radius of curvature and thickness / distance are millimeters (mm).

[0309] Surf Radius Thickness Nd Vd 1 22.620 5.512 2.00 25.43 2 109.618 0.100 3 18.978 4.759 1.57 71.30 4 961.694 0.803 1.92 18.90 5 32.478 1.545 STO Infinity 0.062 7 343.296 0.810 1.49 70.44 8 11.364 5.539 9 23.091 6.654 2.00 25.43 10 19.073 3.354 11 18.830 8.969 1.59 61.15 12 163.203 2.392 13 Infinity 0.800 1.52 64.20 14 Infinity 0.111 IMA / /

[0310] Table 17

[0311] Table 18 below shows the conic coefficient k and the coefficients A, B, C, D, E, and F of each higher-order term that can be used for the aspherical lens surfaces S11 and S12 in Example 9.

[0312] Higher order terms / 4 6 8 10 12 14 Surf K A B C D E F 11 0.209 -1.0177E-04 2.2582E-07 -3.8889E-08 1.1126E-09 -2.3014E-11 1.5441E-13 12 199.400 1.0523E-04 -8.2302E-06 1.8748E-07 -3.3396E-09 2.2949E-11 -2.1825E-14

[0313] Table 18

[0314] Example 10

[0315] like Figure 10 The diagram shown is a schematic of the optical lens structure of Example 10.

[0316] like Figure 10 As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, third lens L3, aperture stop STO, fourth lens L4, fifth lens L5, sixth lens L6, first side surface of protective glass S13, second side surface of protective glass S14, and imaging surface IMA.

[0317] The first lens L1 has positive optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has positive optical power, its first side surface S3 is convex, and its second side surface S4 is concave. The third lens L3 has negative optical power, its first side surface S4 is convex, and its second side surface S5 is concave. The fourth lens L4 has negative optical power, its first side surface S7 is convex, and its second side surface S8 is concave. The fifth lens L5 has negative optical power, its first side surface S9 is convex, and its second side surface S10 is concave. The sixth lens L6 has positive optical power, its first side surface S11 is convex, and its second side surface S12 is concave. Light from the first side passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging plane IMA. Since the second lens L2 and the third lens L3 are cemented together to form a cemented doublet lens, the second side surface S4 of the second lens and the first side surface S4 of the third lens are the same surface.

[0318] In this example, the total effective focal length F of the optical lens is 33.763mm, the maximum field of view (FOV) of the optical lens is 25.200°, and the total length (TTL) of the optical lens is 41.419mm.

[0319] Table 19 shows the basic structural parameters of the optical lens of Example 10, where the units for radius of curvature and thickness / distance are millimeters (mm).

[0320] Surf Radius Thickness Nd Vd 1 22.620 5.512 2.00 25.43 2 109.616 0.100 3 18.978 4.759 1.57 71.30 4 961.009 0.800 1.92 18.90 5 32.477 1.525 STO Infinity 0.082 7 343.228 0.800 1.49 70.44 8 11.364 5.538 9 23.091 6.654 2.00 25.43 10 19.073 3.355 11 18.833 8.970 1.59 61.15 12 163.345 2.391 13 Infinity 0.800 1.52 64.20 14 Infinity 0.133 IMA / /

[0321] Table 19

[0322] Table 20 below shows the conic coefficient k and the coefficients A, B, C, D, E, and F of each higher-order term that can be used for the aspherical lens surfaces S11 and S12 in Example 10.

[0323] Higher order terms / 4 6 8 10 12 14 Surf K A B C D E F 11 0.207 -1.0070E-04 2.2574E-07 -3.8896E-08 1.1126E-09 -2.3014E-11 1.5435E-13 12 197.770 1.0511E-04 -8.2316E-06 1.8750E-07 -3.3397E-09 2.2947E-11 -2.1799E-14

[0324] Table 20

[0325] Example 11

[0326] like Figure 11 The diagram shown is a schematic of the optical lens structure of Example 11.

[0327] like Figure 11 As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, third lens L3, aperture stop STO, fourth lens L4, fifth lens L5, sixth lens L6, first side surface of protective glass S13, second side surface of protective glass S14, and imaging surface IMA.

[0328] The first lens L1 has positive optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has positive optical power, its first side surface S3 is convex, and its second side surface S4 is convex. The third lens L3 has negative optical power, its first side surface S4 is concave, and its second side surface S5 is concave. The fourth lens L4 has negative optical power, its first side surface S7 is concave, and its second side surface S8 is concave. The fifth lens L5 has positive optical power, its first side surface S9 is convex, and its second side surface S10 is concave. The sixth lens L6 has negative optical power, its first side surface S11 is convex, and its second side surface S12 is concave. Light from the first side passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging plane IMA. Since the second lens L2 and the third lens L3 are cemented together to form a cemented doublet lens, the second side surface S4 of the second lens and the first side surface S4 of the third lens are the same surface.

[0329] In this example, the total effective focal length F of the optical lens is 34.241mm, the maximum field of view (FOV) of the optical lens is 25.200°, and the total length (TTL) of the optical lens is 44.985mm.

[0330] Table 21 shows the basic structural parameters of the optical lens in Example 11, where the units for radius of curvature and thickness / distance are millimeters (mm).

[0331]

[0332]

[0333] Table 21

[0334] Table 22 below shows the conic coefficient k and the coefficients A, B, C, D, E, and F of each higher-order term that can be used for the aspherical lens surfaces S11 and S12 in Example 11.

[0335] Higher order terms / 4 6 8 10 12 14 Surf K A B C D E F 11 22.259 -4.8881E-04 5.3505E-06 -6.1513E-08 2.7178E-10 7.3007E-12 -8.9973E-14 12 -7.785 -4.4443E-04 5.3569E-06 2.2243E-08 -3.6881E-09 7.2830E-11 -4.6781E-13

[0336] Table 22

[0337] Example 12

[0338] like Figure 12 The diagram shown is a schematic of the optical lens structure of Example Twelve.

[0339] like Figure 12 As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, third lens L3, aperture stop STO, fourth lens L4, fifth lens L5, sixth lens L6, first side surface of protective glass S13, second side surface of protective glass S14, and imaging surface IMA.

[0340] The first lens L1 has positive optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has positive optical power, its first side surface S3 is convex, and its second side surface S4 is convex. The third lens L3 has negative optical power, its first side surface S4 is concave, and its second side surface S5 is concave. The fourth lens L4 has negative optical power, its first side surface S7 is concave, and its second side surface S8 is concave. The fifth lens L5 has positive optical power, its first side surface S9 is convex, and its second side surface S10 is concave. The sixth lens L6 has negative optical power, its first side surface S11 is convex, and its second side surface S12 is concave. Light from the first side passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging plane IMA. Since the second lens L2 and the third lens L3 are cemented together to form a cemented doublet lens, the second side surface S4 of the second lens and the first side surface S4 of the third lens are the same surface.

[0341] In this example, the total effective focal length F of the optical lens is 34.249mm, the maximum field of view (FOV) of the optical lens is 25.200°, and the total length (TTL) of the optical lens is 45.023mm.

[0342] Table 23 shows the basic structural parameters of the optical lens of Example Twelve, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm).

[0343]

[0344]

[0345] Table 23

[0346] Table 24 below shows the conic coefficient k and the coefficients A, B, C, D, E, and F of each higher-order term that can be used for the aspherical lens surfaces S11 and S12 in Example Twelve.

[0347] Higher order terms / 4 6 8 10 12 14 Surf K A B C D E F 11 22.990 -4.7992E-04 5.2292E-06 -6.1747E-08 2.7056E-10 7.2707E-12 -9.0544E-14 12 -7.068 -4.5516E-04 5.3677E-06 2.2251E-08 -3.6884E-09 7.2740E-11 -4.6868E-13

[0348] Table 24 summarizes that Examples 1 to 12 respectively satisfy the relationships shown in Table 25.

[0349] Conditional / Example 1 2 3 4 5 6 7 8 9 10 11 12 TTL / F 1.294 1.294 1.295 1.295 1.304 1.303 1.294 1.295 1.227 1.227 1.314 1.315 TTL / H / FOV 0.115 0.116 0.115 0.115 0.115 0.114 0.115 0.114 0.107 0.107 0.115 0.116 TTL / H / θ 6.586 6.650 6.573 6.593 6.584 6.551 6.564 6.543 6.134 6.139 6.608 6.629 TTL / DMAX 1.537 1.546 1.525 1.523 1.535 1.535 1.528 1.527 1.418 1.418 1.541 1.542 (F*θ) / D 0.522 0.525 0.518 0.517 0.518 0.518 0.520 0.518 0.508 0.509 0.516 0.516 D / H / FOV 0.075 0.075 0.075 0.076 0.075 0.074 0.075 0.075 0.075 0.076 0.075 0.075 D / H / θ 4.286 4.302 4.311 4.329 4.289 4.268 4.295 4.286 4.326 4.328 4.289 4.300 D / H / F 0.054 0.054 0.055 0.055 0.055 0.055 0.055 0.055 0.056 0.056 0.055 0.055 F / H 2.238 2.260 2.232 2.239 2.221 2.210 2.232 2.221 2.199 2.201 2.212 2.218 F / ENPD 1.200 1.200 1.200 1.200 1.200 1.200 1.200 1.200 1.200 1.200 1.200 1.200 F / ENPD / D 0.041 0.041 0.041 0.041 0.041 0.041 0.041 0.041 0.041 0.041 0.041 0.041 DST / F 0.538 0.538 0.538 0.538 0.538 0.538 0.558 0.557 0.571 0.572 0.621 0.621 R9 / (R9+d9) 0.709 0.709 0.707 0.707 0.693 0.693 0.700 0.701 0.776 0.776 0.736 0.736 R1 / F 0.684 0.684 0.687 0.688 0.696 0.696 R2 / F 0.698 0.670 0.670 0.781 0.782 F1 / F 0.868 0.868 0.871 0.872 0.874 0.874 F2 / F 0.892 0.859 0.859 0.987 0.987 F1 / F2 0.861 0.861 0.841 0.843 0.892 0.890 0.844 0.846 0.836 0.836 0.809 0.810 |F2 / F3| 1.215 1.215 1.196 1.195 1.356 1.355 1.210 1.211 0.894 0.894 1.005 1.005 (R1 / D1) / (R2 / D2) 0.189 0.189 0.188 0.188 0.180 0.180 0.196 0.195 0.200 0.200 0.181 0.180 R8 / F 0.351 0.351 0.355 0.355 0.403 0.403 0.382 0.383 0.337 0.337 0.410 0.410 R10 / F 0.645 0.645 0.646 0.647 0.629 0.629 0.629 0.629 0.565 0.565 17.720 18.406 d8 / TTL 0.242 0.243 0.244 0.243 0.206 0.206 0.233 0.231 0.134 0.134 0.215 0.215 D11 / H 1.131 1.134 1.129 1.133 1.078 1.073 1.100 1.098 1.032 1.034 1.071 1.073 R9 / R8 1.366 1.366 1.351 1.351 1.179 1.179 1.251 1.254 2.032 2.032 1.589 1.590 D10*d10 / H 4.292 4.320 4.388 4.419 3.778 3.759 4.029 4.019 3.327 3.333 5.464 5.478

[0350] Table 25

[0351] Table 26 gives the effective focal length F of the optical lenses in Examples 1 to 12, and the effective focal lengths of each lens from F1 to F6, etc. (unit: mm).

[0352]

[0353]

[0354] Table 26

[0355] 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.

[0356] 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.

[0357] 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.

[0358] 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 has a total of six lens elements. When used as a vehicle-mounted lens, light from the first side forms an image on the second side. When used as a projection lens or radar transmitting lens, light from the second side forms an image on the first side. The lens elements, from the first side to the second side, are sequentially: A first lens having positive optical power, wherein the first side surface of the first lens is convex and the second side surface is concave; A second lens having positive optical power, wherein the first side surface of the second lens is convex. A third lens with negative optical power, wherein the second side surface of the third lens is concave; A fourth lens with negative optical power, wherein the second side surface of the fourth lens is concave; A fifth lens with optical power, wherein the first side surface of the fifth lens is convex and the second side surface is concave; A sixth lens with optical power, wherein the first side of the sixth lens is convex and the second side is concave; At least one of the fifth lens and the sixth lens has positive optical power; The maximum effective aperture D10 of the second side of the fifth lens corresponding to the maximum field of view of the optical lens, the air gap d10 between the fifth lens and the sixth lens, and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: 1≤D10*d10 / H≤5.

478.

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

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

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

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

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

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

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

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

10. The optical lens according to claim 1, characterized in that, The sixth lens has negative optical power.

11. The optical lens according to claim 1, characterized in that, The sixth lens has positive optical power.

12. The optical lens according to claim 1, characterized in that, The second lens and the third lens are cemented together to form a cemented doublet lens.

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

14. The optical lens according to claim 1, characterized in that, The sixth lens is an aspherical lens.

15. The optical lens according to claim 1, characterized in that, The sixth lens is configured to be inverted.

16. The optical lens according to any one of claims 1 to 15, characterized in that, The total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens of the optical lens to the center of the imaging plane of the optical lens, satisfies the following condition with respect to the total focal length F of the optical lens: 1.227≤TTL / F≤1.

8.

17. The optical lens according to any one of claims 1 to 15, characterized in that, The total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens of the optical lens to the center of the imaging surface of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view FOV of the optical lens satisfy the following condition: 0.107≤TTL / H / FOV≤0.

116.

18. The optical lens according to any one of claims 1 to 15, characterized in that, The total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens of the optical lens to the center of the imaging surface of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the following condition: 6.134≤TTL / H / θ≤8.

19. The optical lens according to any one of claims 1 to 15, characterized in that, The total optical length of the optical lens, i.e. the distance TTL from the center of the first side of the first lens of the optical lens to the center of the imaging surface of the optical lens, satisfies the following condition with respect to the maximum aperture DMAX of the optical lens: 1.418≤TTL / DMAX≤2.

0.

20. The optical lens according to any one of claims 1 to 15, characterized in that, The total focal length F of the optical lens, the radian value θ of the maximum field of view of the optical lens, and the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens satisfy the following condition: 0.508≤(F*θ) / D≤0.

75.

21. The optical lens according to any one of claims 1 to 15, characterized in that, The maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view FOV of the optical lens satisfy the following condition: 0.074≤D / H / FOV≤0.

09.

22. The optical lens according to any one of claims 1 to 15, characterized in that, The maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the following condition: 4.268≤D / H / θ≤5.

4.

23. The optical lens according to any one of claims 1 to 15, characterized in that, The maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the total focal length F of the optical lens satisfy the following condition: 0.054≤D / H / F≤0.

056.

24. The optical lens according to any one of claims 1 to 15, characterized in that, The total focal length F of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: 2.199≤F / H≤4.

2.

25. The optical lens according to any one of claims 1 to 15, characterized in that, The total focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy the following condition: 1.200≤F / ENPD≤2.

26. The optical lens according to any one of claims 1 to 15, characterized in that, The total focal length F of the optical lens, the entrance pupil diameter ENPD of the optical lens, and the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens satisfy the following condition: 0.041≤F / ENPD / D≤0.

1.

27. The optical lens according to any one of claims 1 to 15, characterized in that, The aperture diameter DST of the optical lens and the total focal length F of the optical lens satisfy the following condition: DST / F≤1.

28. The optical lens according to any one of claims 1 to 15, characterized in that, The radius of curvature R9 of the first side surface of the fifth lens and the center thickness d9 of the fifth lens satisfy the following condition: 0.4≤R9 / (R9+d9)≤0.

9.

29. The optical lens according to any one of claims 1 to 15, characterized in that, The radius of curvature R1 of the first side of the first lens satisfies the following relationship with the total focal length F of the optical lens: 0.670≤R1 / F≤0.

782.

30. The optical lens according to any one of claims 1 to 15, characterized in that, The focal length F1 of the first lens and the total focal length F of the optical lens satisfy the following condition: 0.859≤F1 / F≤0.

987.

31. The optical lens according to any one of claims 1 to 15, characterized in that, The focal length F1 of the first lens and the focal length F2 of the second lens satisfy the following condition: 0.5 ≤ F1 / F2 ≤ 1.

5.

32. The optical lens according to any one of claims 1 to 15, characterized in that, The focal length F2 of the second lens and the focal length F3 of the third lens satisfy the following condition: 0.5 ≤ |F2 / F3| ≤ 1.

8.

33. The optical lens according to any one of claims 1 to 15, characterized in that, The radius of curvature R1 of the first side surface of the first lens, the radius of curvature R2 of the second side surface of the first lens, the aperture D1 of the first side surface of the first lens and the aperture D2 of the image side surface of the first lens satisfy the following condition: (R1 / D1) / (R2 / D2)≤0.

6.

34. The optical lens according to any one of claims 1 to 15, characterized in that, The radius of curvature R8 of the second side of the fourth lens satisfies the following relationship with the total focal length F of the optical lens: 0.001≤R8 / F≤0.

410.

35. The optical lens according to any one of claims 1 to 15, characterized in that, The radius of curvature R10 of the second side of the fifth lens satisfies the following relationship with the total focal length F of the optical lens: 0.001≤R10 / F≤18.

406.

36. The optical lens according to any one of claims 1 to 15, characterized in that, The air gap d8 between the fourth lens and the fifth lens satisfies the following condition with respect to the total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens of the optical lens to the center of the imaging plane of the optical lens: 0.05≤d8 / TTL≤0.

244.

37. The optical lens according to any one of claims 1 to 15, characterized in that, The maximum effective aperture D11 of the first side of the sixth lens corresponding to the maximum field of view of the optical lens satisfies the following relationship with the image height H corresponding to the maximum field of view of the optical lens: 0.5≤D11 / H≤1.

134.

38. The optical lens according to any one of claims 1 to 15, characterized in that, The radius of curvature R8 of the second side surface of the fourth lens and the radius of curvature R9 of the first side surface of the fifth lens satisfy the following condition: 1.179≤R9 / R8≤5.

39. The optical lens according to any one of claims 1 to 15, characterized in that, The total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens of the optical lens to the center of the imaging plane of the optical lens, satisfies the following condition with respect to the total focal length F of the optical lens: 1.227≤TTL / F≤1.

35. The total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens of the optical lens to the center of the imaging surface of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the following condition: 6.134≤TTL / H / θ≤7. The total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens of the optical lens to the center of the imaging surface of the optical lens, satisfies the following condition with respect to the maximum aperture DMAX of the optical lens: 1.418≤TTL / DMAX≤1.8; The total focal length F of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: 2.199≤F / H≤3.2; The total focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy the following condition: 1.200≤F / ENPD≤1.5; The total focal length F of the optical lens, the entrance pupil diameter ENPD of the optical lens, and the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens satisfy the following condition: 0.041≤F / ENPD / D≤0.

07. The aperture diameter DST of the optical lens and the total focal length F of the optical lens satisfy the following condition: 0.538 ≤ DST / F ≤ 0.8; The radius of curvature R9 of the first side surface of the fifth lens and the center thickness d9 of the fifth lens satisfy the following condition: 0.5≤R9 / (R9+d9)≤0.9; The focal length F1 of the first lens and the focal length F2 of the second lens satisfy the following condition: 0.7 ≤ F1 / F2 ≤ 1.2; The focal length F2 of the second lens and the focal length F3 of the third lens satisfy the following condition: 0.7 ≤ |F2 / F3| ≤ 1.6; The radius of curvature R1 of the first side surface of the first lens, the radius of curvature R2 of the second side surface of the first lens, the aperture D1 of the first side surface of the first lens, and the aperture D2 of the image side surface of the first lens satisfy the following condition: 0.180≤(R1 / D1) / (R2 / D2)≤0.

4. The radius of curvature R8 of the second side surface of the fourth lens satisfies the following condition with respect to the focal length F of the optical lens: 0.16≤R8 / F≤0.410; The radius of curvature R10 of the second side of the fifth lens satisfies the following relationship with the total focal length F of the optical lens: 0.3≤R10 / F≤0.647; The air gap d8 between the fourth lens and the fifth lens satisfies the following condition with respect to the total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens of the optical lens to the center of the imaging plane of the optical lens: 0.08≤d8 / TTL≤0.

244. The maximum effective aperture D11 of the first side of the sixth lens corresponding to the maximum field of view of the optical lens satisfies the following relationship with the image height H corresponding to the maximum field of view of the optical lens: 0.8≤D11 / H≤1.134; The radius of curvature R8 of the second side surface of the fourth lens and the radius of curvature R9 of the first side surface of the fifth lens satisfy the following condition: 1.179≤R9 / R8≤3; The maximum effective aperture D10 of the second side of the fifth lens corresponding to the maximum field of view of the optical lens, the air gap d10 between the fifth lens and the sixth lens, and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: 1.7≤D10*d10 / H≤5.

478.

40. The optical lens according to any one of claims 1 to 15, characterized in that, The total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens of the optical lens to the center of the imaging plane of the optical lens, satisfies the following condition with respect to the total focal length F of the optical lens: 1.227≤TTL / F≤1.315; The total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens of the optical lens to the center of the imaging surface of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view FOV of the optical lens satisfy the following: 0.107≤TTL / H / FOV≤0.

116. The total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens of the optical lens to the center of the imaging surface of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the following condition: 6.134≤TTL / H / θ≤6.650; The total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens of the optical lens to the center of the imaging surface of the optical lens, satisfies the following condition with respect to the maximum aperture DMAX of the optical lens: 1.418≤TTL / DMAX≤1.546; The total focal length F of the optical lens, the radian value θ of the maximum field of view of the optical lens, and the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens satisfy the following condition: 0.508≤(F*θ) / D≤0.

525. The maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view FOV of the optical lens satisfy the following condition: 0.074≤D / H / FOV≤0.

076. The maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the following condition: 4.268≤D / H / θ≤4.329; The maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the total focal length F of the optical lens satisfy the following condition: 0.054≤D / H / F≤0.

056. The total focal length F of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: 2.199≤F / H≤2.260; The aperture diameter DST of the optical lens and the total focal length F of the optical lens satisfy the following condition: 0.538≤DST / F≤0.621; The radius of curvature R9 of the first side surface of the fifth lens and the center thickness d9 of the fifth lens satisfy the following condition: 0.693≤R9 / (R9+d9)≤0.776; The focal length F1 of the first lens and the focal length F2 of the second lens satisfy the following condition: 0.809 ≤ F1 / F2 ≤ 0.892; The focal length F2 of the second lens and the focal length F3 of the third lens satisfy the following condition: 0.894 ≤ |F2 / F3| ≤ 1.356; The radius of curvature R1 of the first side surface of the first lens, the radius of curvature R2 of the second side surface of the first lens, the aperture D1 of the first side surface of the first lens and the aperture D2 of the image side surface of the first lens satisfy the following condition: 0.180≤(R1 / D1) / (R2 / D2)≤0.

200. The radius of curvature R8 of the second side surface of the fourth lens satisfies the following relationship with the total focal length F of the optical lens: 0.337≤R8 / F≤0.410; The radius of curvature R10 of the second side of the fifth lens satisfies the following relationship with the focal length F of the optical lens: 0.565≤R10 / F≤18.406; The air gap d8 between the fourth lens and the fifth lens satisfies the following condition with respect to the total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens of the optical lens to the center of the imaging plane of the optical lens: 0.134≤d8 / TTL≤0.

244. The maximum effective aperture D11 of the first side of the sixth lens corresponding to the maximum field of view of the optical lens satisfies the following relationship with the image height H corresponding to the maximum field of view of the optical lens: 1.032≤D11 / H≤1.134; The radius of curvature R8 of the second side surface of the fourth lens and the radius of curvature R9 of the first side surface of the fifth lens satisfy the following condition: 1.179≤R9 / R8≤2.032; The maximum effective aperture D10 of the second side of the fifth lens corresponding to the maximum field of view of the optical lens, the air gap d10 between the fifth lens and the sixth lens, and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: 3.327≤D10*d10 / H≤5.

478.

41. An electronic device, characterized in that, It includes an optical lens according to any one of claims 1 to 40 and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

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