Optical lenses and electronic equipment

Abstract

The present application discloses an optical lens and an electronic device. The optical lens comprises first to fifth lenses arranged in sequence from the first side to the second side along the optical axis, the first lens has negative optical power and a convex-concave surface type; the second lens has positive optical power; the third and fourth lenses are glued, and the two have opposite optical powers of positive and negative; the fifth lens has positive optical power; the maximum field of view FOV of the lens, the total effective focal length F of the lens, and the image height H corresponding to the maximum field of view of the lens satisfy 72≤(FOV×F) / H≤120; the radius of curvature R11 of the first side surface of the first lens and the sag height SAG11 of the first side surface of the first lens satisfy 0.75≤R11 / SAG11≤10; the radius of curvature R21 of the first side surface of the second lens, the center thickness d2 of the second lens, and the radius of curvature R22 of the second side surface of the second lens satisfy 0.2≤(R21‑d2) / R22≤8; the radius of curvature R21 of the first side surface of the second lens and the total effective focal length F of the lens satisfy 0.8≤|R21 / F|≤8.5.

Description

Technical Field

[0001] The present application relates to the field of optical elements, and more specifically, to an optical lens and an electronic device. Background Art

[0002] In recent years, optical lens technology has continued to develop and progress, and optical lenses have been increasingly widely used in many fields including smart phones, security monitoring, car assisted driving, intelligent detection, and virtual reality. Among them, in the application of the automotive field, with the vigorous development of autonomous driving technology, vehicle-mounted lenses as key components in autonomous driving assistance systems have also ushered in rapid development: on the one hand, in order to obtain a larger amount of information, the front-view lens needs to image a larger field of view, and at the same time, in order to meet specific usage scenarios, the central imaging area of ​​the lens is required to have a higher angular magnification; on the other hand, vehicle-mounted lenses are increasingly used in automotive assisted driving systems, so they are required to cooperate with the development of chips and have a million-level clarity, which puts forward higher requirements on the high-resolution capabilities of the lenses; on the other hand, based on product aesthetics and space considerations, automobile manufacturers usually install lenses in concealed locations and require a smaller size, so vehicle-mounted lenses are becoming more and more miniaturized, but it is currently difficult to meet high resolution and miniaturization at the same time; and, in order to adapt to driving environments with insufficient light such as rainy days and nights, vehicle-mounted lenses require a large amount of light to ensure imaging quality. Due to the limitation of the overall size, vehicle-mounted lenses are often very small in diameter, and the sensor surface illumination is insufficient in a dark light environment, which is easily affected by noise.

[0003] Existing optical lenses still have many deficiencies in the above-mentioned aspects, which need to be improved and enhanced. For example, in terms of central angular resolution, existing optical lenses have insufficient central angular resolution while meeting the requirements of a large field of view; in terms of high resolution, although existing optical lenses can achieve a clarity of one million pixels, lens aberrations such as chromatic aberration, astigmatism, and distortion are relatively serious; in terms of miniaturization, existing optical lenses cannot simultaneously meet the requirements of high resolution and miniaturization; in terms of light transmission, existing optical lenses generally require weak light transmission and cannot adapt to darker environments such as night or rainy days. Therefore, optical lenses with some or all of the performance characteristics such as large central angular resolution, large field of view, miniaturization, small aperture, high resolution, high relative illumination, high performance, and low sensitivity have become an important development direction for current automotive lenses. Summary of the invention

[0004] The present application provides an optical lens, which may include, in order from the first side to the second side along the optical axis: a first lens with negative optical power, whose first side surface is convex and the second side surface is concave; a second lens with positive optical power; a third lens with optical power; a fourth lens with optical power; and a fifth lens with positive optical power. The third lens and the fourth lens are glued together, and the third lens and the fourth lens have opposite optical power properties, positive and negative; the number of lenses with optical power in the optical lens is five. The optical lens may satisfy the following conditions: 72≤(FOV×F) / H≤120; 0.75≤R11 / SAG11≤10; 0.2≤(R21-d2) / R22≤8; and 0.8≤|R21 / F|≤8.5; wherein FOV is the maximum field of view of the optical lens, F is the total effective focal length of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, R11 is the curvature radius of the first side surface of the first lens, SAG11 is the sag height of the first side surface of the first lens, R21 is the curvature radius of the first side surface of the second lens, d2 is the center thickness of the second lens on the optical axis, and R22 is the curvature radius of the second side surface of the second lens.

[0005] In one embodiment, the first side surface and the second side surface of the second lens are respectively a convex surface and a concave surface, or respectively a concave surface and a convex surface.

[0006] In one embodiment, the third lens has positive optical power, and its first side surface and second side surface are convex and convex, respectively, or concave and convex, respectively; or, the third lens has negative optical power, and its first side surface and second side surface are concave and concave, respectively, or convex and concave, respectively.

[0007] In one embodiment, the fourth lens has positive optical power, and its first side surface and second side surface are convex and convex respectively; or, the fourth lens has negative optical power, and its first side surface and second side surface are concave and concave respectively, or concave and convex respectively.

[0008] In one embodiment, the first side surface and the second side surface of the fifth lens are respectively a convex surface and a convex surface, or respectively a convex surface and a concave surface, or respectively a concave surface and a convex surface.

[0009] In one embodiment, a curvature radius R21 of the first side surface of the second lens and a curvature radius R22 of the second side surface of the second lens may satisfy: 0.3≤R21 / R22≤7.

[0010] In one embodiment, the effective focal length F2 of the second lens and the total effective focal length F of the optical lens may satisfy: 1.8≤F2 / F≤15.

[0011] In one embodiment, the combined focal length F34 of the third lens and the fourth lens and the total effective focal length F of the optical lens may satisfy: 1.5≤F34 / F≤6.

[0012] In one embodiment, the curvature radius R11 of the first side surface of the first lens and the total effective focal length F of the optical lens may satisfy: 0.3≤R11 / F≤2.8.

[0013] In one embodiment, the opening angle arctan(1 / K(S1)) of the first side surface of the first lens and the opening angle θ1 on the first side surface of the first lens at a quarter of the aperture distance from the lens center may satisfy: arctan(1 / K(S1)) / θ1≤0.8.

[0014] In one embodiment, the vector height SAG11 of the first side surface of the first lens and the maximum effective aperture D of the first side surface of the first lens corresponding to the maximum field angle of the optical lens may satisfy: 7≤arctan(SAG11 / (D / 2))≤28.

[0015] In one embodiment, the image height H corresponding to the maximum field angle of the optical lens, the total effective focal length F of the optical lens, and the arc value θ of the maximum field angle of the optical lens may satisfy: 0.2≤(H / 2) / (F×tan(θ / 2))≤0.6.

[0016] In one embodiment, the first side surface of the second lens is convex, and the second side surface is concave; the curvature radius R22 of the second side surface of the second lens and the total effective focal length F of the optical lens may satisfy: 3.5≤R22 / F≤7.

[0017] In one embodiment, the first side surface of the second lens is convex, and the second side surface is concave; the combined focal length F34 of the third lens and the fourth lens, the total effective focal length F of the optical lens, and the effective focal length F5 of the fifth lens may satisfy: 1.5≤(F34 / F)×(F5 / F)≤4.5.

[0018] In one embodiment, the first side surface of the second lens is concave, and the second side surface is convex; the curvature radius R22 of the second side surface of the second lens and the total effective focal length F of the optical lens may satisfy: -4≤R22 / F≤-0.5.

[0019] In one embodiment, the first side surface of the second lens is concave, and the second side surface is convex; the combined focal length F34 of the third lens and the fourth lens, the total effective focal length F of the optical lens, and the effective focal length F5 of the fifth lens may satisfy: 4≤(F34 / F)×(F5 / F)≤28.

[0020] In one embodiment, a center thickness d2 of the second lens on the optical axis, a center thickness d3 of the third lens on the optical axis, and a center thickness d4 of the fourth lens on the optical axis may satisfy: 0.35≤d2 / (d3+d4)≤1.2.

[0021] In one embodiment, the optical lens may satisfy at least one of the following conditions: -4≤F1 / F≤-0.5; 1.5≤F5 / F≤18; |arctan(1 / K(S1))|≤15; 0.1≤|(HF×θ) / (F×θ)|≤0.5; 0.9≤R32 / R41≤1.1; d34 / TTL≤0.005; 0.02≤TTL / H / FOV≤0.05; 0.45≤(F×θ) / D≤1.6; 0.3≤D / H / θ≤0.95; 0.15≤D / H / F≤0.6; 1.2≤F / ENPD≤2.0; wherein, F1 is the effective focal length of the first lens, F5 is the effective focal length of the fifth lens, arctan(1 / K(S1)) is the opening angle of the first side surface of the first lens, θ is the radian value of the maximum field of view angle of the optical lens, R32 is the curvature radius of the second side surface of the third lens, R41 is the curvature radius of the first side surface of the fourth lens, d34 is the air gap between the third lens and the fourth lens on the optical axis, TTL is the distance from the center of the first side surface of the first lens to the imaging surface of the optical lens on the optical axis, D is the maximum effective aperture of the first side surface of the first lens corresponding to the maximum field of view angle of the optical lens, and ENPD is the entrance pupil diameter of the optical lens.

[0022] In one embodiment, the optical lens may satisfy at least one of the following conditions: 75≤(FOV×F) / H≤100; 0.9≤R11 / SAG11≤8.5; 0.3≤(R21-d2) / R22≤6; 1.2≤|R21 / F|≤7.5; 0.5≤R21 / R22≤6; 2≤F2 / F≤8.8; 0.45≤R11 / F≤2.3; 0.0015≤arctan(1 / K(S1)) / θ1≤0.65; 10≤arctan(SAG11 / (D / 2))≤25; 0.35≤( H / 2) / (F×tan(θ / 2))≤0.48; 4.85≤R22 / F≤5.58; 3.02≤(F34 / F)×(F5 / F)≤3.6; -2.8≤R22 / F≤-0.8; 5≤(F34 / F)×(F5 / F)≤24; 0 .4≤d2 / (d3+d4)≤1.05; -3.4≤F1 / F≤-1.12; 1.55≤F5 / F≤14; |arctan(1 / K(S1))|≤12.5; 0.2≤|(HF×θ) / (F×θ)|≤0.4; d34 / TTL ≤0.002; 0.027≤TTL / H / FOV≤0.04; 0.6≤(F×θ) / D≤1.4; 0.56≤D / H / θ≤0.9; 0.22≤D / H / F≤0.54; 1.3≤F / ENPD≤1.9; Wherein, F2 is the effective focal length of the second lens, arctan(1 / K(S1)) is the opening angle of the first side surface of the first lens, θ1 is the opening angle of the first side surface of the first lens at a distance of one quarter of the diameter from the center of the lens, SAG11 is the sag height of the first side surface of the first lens, and D is the first side surface of the optical lens corresponding to the maximum field of view angle. The maximum effective aperture of the first side surface of the lens, θ is the radian value of the maximum field of view of the optical lens, F34 is the combined focal length of the third lens and the fourth lens, F5 is the effective focal length of the fifth lens, d2 is the center thickness of the second lens on the optical axis, d3 is the center thickness of the third lens on the optical axis, d4 is the center thickness of the fourth lens on the optical axis, F1 is the effective focal length of the first lens, d34 is the air gap between the third lens and the fourth lens on the optical axis, TTL is the distance from the center of the first side surface of the first lens to the imaging surface of the optical lens on the optical axis, and ENPD is the entrance pupil diameter of the optical lens.

[0023] In one embodiment, the optical lens may satisfy at least one of the following conditions: 75.8794≤(FOV×F) / H≤92.2821; 1.312≤R11 / SAG11≤7.9092; 0.3473≤(R21-d2) / R22≤5.4967; 1.7615≤|R21 / F|≤6.8217; 0.5167≤R21 / R22≤4.8921; 2.3998≤F2 / F≤9.4888; 1 .7920≤F34 / F≤4.5564; 0.6192≤R11 / F≤2.2527; 0.0028≤arctan(1 / K(S1)) / θ1≤0.5912; 12.057≤arcta n(SAG11 / (D / 2))≤23.5381; 0.3754≤(H / 2) / (F×tan(θ / 2))≤0.4565; 4.9853≤R22 / F≤5.4267; 3.1709≤( F34 / F)×(F5 / F)≤3.5222; -2.4809≤R22 / F≤-1.2542; 6.7349≤(F34 / F)×(F5 / F)≤19.2725; 0.5245≤d2 / (d3+d4)≤0.9437; -2.8876≤F1 / F≤-1.5180; 1.6363≤F5 / F≤9.0917; 0.0623≤|arctan(1 / K(S1))|≤11.0 541; 0.2449≤|(HF×θ) / (F×θ)|≤0.3791; 0.95≤R32 / R41≤1.05; d34 / TTL≤0.0015; 0.0293≤TTL / H / FOV≤0 .0374; 0.7853≤(F×θ) / D≤1.2786; 0.5975≤D / H / θ≤0.8052; 0.2834≤D / H / F≤0.4785; 1.4524≤F / ENPD≤1.8254; where F2 is the effective focal length of the second lens, arctan(1 / K(S1)) is the opening angle of the first side surface of the first lens, θ1 is the opening angle of the first side surface of the first lens at a quarter of the diameter from the center of the lens, SAG11 is the sagittal height of the first side surface of the first lens, D is the maximum effective aperture of the first side surface of the first lens corresponding to the maximum field of view of the optical lens, θ is the radian value of the maximum field of view of the optical lens, F34 is the combined focal length of the third lens and the fourth lens, F5 is the effective focal length of the fifth lens, d2 is the center thickness of the second lens on the optical axis, d3 is the center thickness of the third lens on the optical axis, d4 is the center thickness of the fourth lens on the optical axis, F1 is the effective focal length of the first lens, R32 is the curvature radius of the second side surface of the third lens, R41 is the curvature radius of the first side surface of the fourth lens, d34 is the air gap between the third lens and the fourth lens on the optical axis, TTL is the distance from the center of the first side surface of the first lens to the imaging surface of the optical lens on the optical axis, and ENPD is the entrance pupil diameter of the optical lens. .

[0024] On the other hand, the present application provides an electronic device, which includes an optical lens provided by the present application and an imaging element for converting an optical image or optical information formed by the optical lens into an electrical signal, wherein the imaging element is located on the second side of the optical lens, and light from the first side forms an image on the second side after passing through the optical lens. Alternatively, the electronic device includes an optical lens and a light source provided by the present application, wherein the light source is located on the second side of the optical lens, and light emitted by the light source is projected onto the first side of the optical lens after passing through the optical lens, forming an image or illuminating an area on the first side.

[0025] The optical lens according to the exemplary embodiment of the present application includes five lenses with optical power, which are first to fifth lenses arranged in sequence from the first side to the second side along the optical axis, wherein the first lens has negative optical power, and its first side surface is convex, and the second side surface is concave; the second lens has positive optical power; the third lens and the fourth lens are cemented, and the third lens and the fourth lens have opposite optical power properties; the fifth lens has positive optical power; the maximum field of view FOV of the optical lens, the total effective focal length F of the optical lens, and the image height H corresponding to the maximum field of view of the optical lens meet 7 2≤(FOV×F) / H≤120; the radius of curvature R11 of the first side surface of the first lens and the sag height SAG11 of the first side surface of the first lens satisfy 0.75≤R11 / SAG11≤10; the radius of curvature R21 of the first side surface of the second lens and the center thickness d2 of the second lens on the optical axis and the radius of curvature R22 of the second side surface of the second lens satisfy 0.2≤(R21-d2) / R22≤8; the radius of curvature R21 of the first side surface of the second lens and the total effective focal length F of the optical lens satisfy 0.8≤|R21 / F|≤8.5. Through this setting of the lens, when the focal length and image height of the lens are the same, a large field of view can be achieved, which is conducive to expanding the imaging range and capturing more picture information; when the field of view and image height of the lens are the same, the focal length is large and the distortion is large, which is conducive to achieving a large central angular resolution. The first lens is aspherical, with a gentle convex edge at the center of the object side and a small edge angle. Reasonable setting of the ratio of the radius of curvature of the object side to the sagittal height is conducive to collecting large-angle light from the edge field of view, reducing the incident height of the light from the edge field of view, and is conducive to achieving large distortion and improving the angular resolution of the center; with the smaller radius of curvature at the center of the object side of the first lens, it can achieve the telephoto characteristics of the entire lens while taking into account the large field of view. The second lens has a positive focal power. By controlling the radius of curvature and the thickness of the second lens, it is designed into a special shape (such as concentric circles), which can smoothly receive the divergent light emitted by the first lens with negative focal power, expand the beam width, and smoothly transition the light to the rear optical system to reduce the generation of aberrations. At the same time, the optical path difference between light from different fields of view can be adjusted to achieve high resolution. At the same time, the ratio of the radius of curvature of the object side of the second lens with positive focal power to the focal length of the entire group can be reasonably controlled, and combined with the first lens with negative focal power and meniscus shape, it can correct aberrations and improve resolution; at the same time, the auxiliary light trend is smooth, which is conducive to the realization of telephoto characteristics of the entire lens.

[0026] The optical lens according to the exemplary embodiment of the present application adopts a five-piece lens architecture. By reasonably setting parameters such as lens optical power, surface shape, curvature radius, center thickness, aperture angle, sagittal height, and air spacing between lenses, the optical lens can have one or more beneficial effects such as large central angular resolution, large field of view, miniaturization, small aperture, high resolution, high relative illumination, high performance, and low sensitivity, so that the optical lens can better meet the high requirements of, for example, automotive applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Other features, purposes and advantages of the present application will become more apparent through the following detailed description of the embodiments in conjunction with the accompanying drawings. In the accompanying drawings:

[0028] Figure 1 A schematic diagram showing the structure of an optical lens according to Embodiment 1 of the present application;

[0029] Figure 2 A schematic diagram showing the structure of an optical lens according to Embodiment 2 of the present application;

[0030] Figure 3 A schematic diagram showing the structure of an optical lens according to Embodiment 3 of the present application;

[0031] Figure 4 A schematic diagram showing the structure of an optical lens according to Embodiment 4 of the present application;

[0032] Figure 5 A schematic diagram showing the structure of an optical lens according to Embodiment 5 of the present application;

[0033] Figure 6 A schematic diagram showing the structure of an optical lens according to Embodiment 6 of the present application;

[0034] Figure 7 A schematic diagram showing the structure of an optical lens according to Embodiment 7 of the present application;

[0035] Figure 8 A schematic diagram showing the structure of an optical lens according to Example 8 of the present application;

[0036] Fig. 9 A schematic diagram showing the structure of an optical lens according to Example 9 of the present application;

[0037] Fig.10 A schematic diagram showing the structure of an optical lens according to Embodiment 10 of the present application;

[0038] Fig.11 A schematic diagram showing the structure of an optical lens according to Example 11 of the present application;

[0039] Fig.12A schematic diagram showing the structure of an optical lens according to Embodiment 12 of the present application;

[0040] Fig.13 A schematic diagram showing the structure of an optical lens according to Embodiment 13 of the present application;

[0041] Fig.14 A schematic diagram showing the structure of an optical lens according to Embodiment 14 of the present application;

[0042] Fig.15 A schematic diagram showing the structure of an optical lens according to Embodiment 15 of the present application;

[0043] Fig.16 A schematic diagram showing the structure of an optical lens according to Embodiment 16 of the present application;

[0044] Fig.17 A schematic diagram showing the structure of an optical lens according to Embodiment 17 of the present application;

[0045] Fig.18 A schematic diagram showing the structure of an optical lens according to Example 18 of the present application;

[0046] Fig.19 To illustrate the distortion curves of the optical lenses according to Embodiment 1 and Embodiment 2 of the present application;

[0047] Fig. 20 To illustrate the distortion curves of the optical lenses according to Embodiment 3 and Embodiment 4 of the present application;

[0048] Fig.21 To illustrate the distortion curves of the optical lenses according to Embodiment 5 and Embodiment 6 of the present application;

[0049] Fig. 22 To illustrate the distortion curves of the optical lenses according to Embodiment 7 and Embodiment 8 of the present application;

[0050] Fig.23 To illustrate the distortion curves of the optical lenses according to Embodiment 9 and Embodiment 10 of the present application;

[0051] Fig.24 A distortion curve diagram showing the optical lenses according to Embodiment 11 and Embodiment 12 of the present application;

[0052] Fig.25 A distortion curve diagram showing the optical lenses according to Embodiment 13 and Embodiment 14 of the present application;

[0053] Fig.26 To illustrate the distortion curves of the optical lenses according to Embodiment 15 and Embodiment 16 of the present application;

[0054] Fig. 27Graphs showing distortion curves of optical lenses according to Embodiment 17 and Embodiment 18 of the present application;

[0055] Fig.28 The MTF diagrams of the optical lenses according to Examples 17 and 18 of the present application are shown. DETAILED DESCRIPTION

[0056] In order to facilitate the understanding of the present application, the present application will be described more comprehensively below with reference to the relevant drawings. It should be understood that these detailed descriptions are only descriptions of exemplary embodiments of the present application, and do not limit the scope of the present application in any way. Throughout the specification, the same figure numbers refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0057] It should be noted that in this specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the features. Therefore, without departing from the teaching of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0058] In the drawings, the thickness, size and shape of the lenses have been slightly exaggerated for ease of explanation. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to the shapes of the spherical or aspherical surfaces shown in the drawings. The drawings are only examples and are not drawn strictly to scale.

[0059] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the position of the convex surface 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 position of the concave surface 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 subject is called the object side of the lens, and the surface of each lens closest to the imaging side is called the image side of the lens.

[0060] It should be understood that the optical lens provided in this application can be used for both video and projection, and can also be used for laser radar lenses. When the optical lens provided in this application is used for a video lens or a laser radar receiving end lens, the video lens can be, for example, a vehicle-mounted camera, an infrared camera, a drone camera, a night vision camera, a security monitoring camera, etc., and the "first side" involved in this article can refer to the object side, and the "second side" can refer to the image side, and the light from the object side can be imaged on the image side; when the optical lens provided in this application is used for a projection lens or a radar transmitting end lens, the "first side" involved in this article can refer to the object side, and the "second side" can refer to the light source side, and the light from the light source side is projected to the first side after passing through the optical lens, and forms an image or illuminates the area on the first side.

[0061] It should also be understood that the terms "comprises", "including", "having", "includes" and / or "comprising", when used in this specification, indicate the presence of the stated features, elements and / or components, but do not exclude the presence or addition of one or more other features, elements, components and / or combinations thereof. In addition, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire listed features rather than modifying the individual elements in the list. In addition, when describing embodiments of the present application, "may" is used to mean "one or more embodiments of the present application". And, the term "exemplary" is intended to refer to an example or illustration.

[0062] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. It should also be understood that terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined in this article.

[0063] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0064] The features, principles and other aspects of the present application are described in detail below.

[0065] In an exemplary embodiment, the optical lens includes, for example, five lenses having optical power, namely, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. The five lenses may be arranged in sequence from the first side to the second side along the optical axis.

[0066] In an exemplary embodiment, the first side may be, for example, the object side, and the second side may be, for example, the image side. Accordingly, the first side surface of each lens in the first lens, the second lens, the third lens, the fourth lens, and the fifth lens may be the object side surface of each lens, and the second side surface of each lens may be the image side surface of each lens.

[0067] In an exemplary embodiment, the optical lens may further include an imaging surface and a photosensitive element disposed on the imaging surface. Optionally, the photosensitive element disposed on the imaging surface may be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS).

[0068] In an exemplary embodiment, the optical lens of the present application may further include a filter and / or a protective glass disposed between the fifth lens and the imaging surface as required. The filter may filter light having a specific wavelength, and the protective glass may prevent the second side element (e.g., chip) of the optical lens from being damaged.

[0069] In an exemplary embodiment, the first lens may have a negative optical power. The first lens may have a convex-concave type. The first lens has a negative optical power, and the object side is designed to be convex, which has the function of converging light, can prevent the object side light from being too divergent, so that the light entering through the object side is better compressed, which is conducive to collecting large-angle light in a limited radial space, and at the same time reduces the height of the light incident on the image side of the first lens, reduces the lens diameter, and is conducive to miniaturization; and in actual application scenarios, it is conducive to the sliding of water droplets, etc., and reduces the impact of water droplets on the imaging quality. The image side of the first lens is designed to be a concave surface, so that the light emitted from the image side of the first lens is diverged to a certain extent, and the effective diameter is larger when entering the rear optical system, which is conducive to improving the relative illumination of the system; at the same time, the light emitted from the image side is less deflected (the angle between the incident image side and the exit image side light is smaller), which is conducive to reducing the sensitivity of the lens. In an exemplary embodiment, the first lens can use a high refractive index material, which is conducive to reducing the front port diameter and realizing a miniaturized design. In an exemplary embodiment, the first lens can be an aspherical lens, which is conducive to having a large angle resolution in the central area and improving the resolution.

[0070] In an exemplary embodiment, the second lens may have positive focal power. The second lens may have a convex-concave type. The second lens has positive focal power and has the function of converging light. The object side surface is designed to be convex, which cooperates with the concave surface of the image side surface of the first lens to converge the light emitted by the first lens; the image side surface is designed to be concave, which is conducive to further appropriate divergence of light, smoothing the trend of light, reducing system sensitivity, allowing light to enter the rear system smoothly, and allowing large-angle light to enter the rear optical system as much as possible, which is conducive to improving the illumination of the edge field of view; at the same time, it is conducive to controlling the aperture of the rear lens and realizing a miniaturized design.

[0071] In an exemplary embodiment, the second lens may have positive focal power. The second lens may have a concave-convex surface. The second lens has positive focal power, which is conducive to light convergence. The object side surface is designed to be concave, and the shape is a meniscus concave toward the object side, which cooperates with the concave surface of the image side surface of the first lens to make the light transition smoothly, reduce the loss of light energy, and help improve the illumination of the edge field of view. At the same time, it changes the trend of the edge light, realizes the reduction of the front port diameter of the lens, and realizes a miniaturized design; the image side surface is designed to be convex, which can make the light converge and emit more reasonably, reduce the defocus between different fields of view, and improve the imaging quality.

[0072] In an exemplary embodiment, the third lens may have positive power. The third lens may have a convex-convex surface. The third lens has positive power, and the object side is designed to be convex, which can compress the height of the light incident through the second lens, and the image side is designed to be convex, so that the light emitted through the third lens is further converged, so that the divergent light smoothly enters the rear optical system, and further makes the light trend transition smoothly, which is conducive to reducing the front port diameter of the lens.

[0073] In an exemplary embodiment, the third lens may have positive power. The third lens may have a concave-convex surface. The third lens has positive power, and the object side is designed to be concave, which is conducive to better receiving the light passing through the aperture, and appropriately diverging the light to leave enough space for the aberration adjustment of the rear group of light, and is also conducive to receiving the light emitted by the first lens and the second lens; the image side is designed to be convex, and the converged emitted light can have a close light trend with the fourth lens, so that the light transition is smooth and the sensitivity is reduced.

[0074] In an exemplary embodiment, the third lens may be cemented with the fourth lens to reduce light energy loss caused by reflection between lenses and improve relative illumination; at the same time, it is beneficial to correct aberrations and improve system resolution.

[0075] In an exemplary embodiment, the third lens may have a negative optical power. The third lens may have a concave-concave surface. The third lens has a negative optical power, which is conducive to the proper divergence of light, and can disperse the central light and the marginal light of each field of view, expand the aperture, increase the system illumination, and at the same time facilitate the correction of the aberration of the marginal light and the central light, so as to achieve high resolution. The object side of the third lens is a concave surface, which is matched with the convex surface of the image side of the second lens, which is conducive to a smoother transition of the light emitted from the image side of the second lens into the third lens, which can reduce the loss of light energy and improve the resolution.

[0076] In an exemplary embodiment, the third lens may have a negative optical power. The third lens may have a convex-concave type. The third lens has a negative optical power, which is conducive to proper diffusion of light, making the light trend smooth, and is conducive to reducing the sensitivity of the lens. The shape is a meniscus concave toward the image side, which is conducive to collecting the light entering through the second lens; the object side of the third lens is convex, and the image side is concave, so that when the light reaches the image side, the light deflection is small, and further makes the light more concentrated when it reaches the image plane, which is conducive to correcting the edge field aberration, achieving high resolution, and at the same time, the light energy loss is small.

[0077] In an exemplary embodiment, the fourth lens may have positive power. The fourth lens may have a convex-convex surface. The fourth lens has positive power, which is conducive to light convergence, so that the light emitted by the fourth lens has a gentle trend, and further makes the large-angle light transition as much as possible smoothly, resulting in less aberration, which can improve the resolution ability of the optical system and is conducive to achieving high resolution; the image side of the fourth lens is designed to be a convex surface, so that the edge field light is deflected inward after passing through the image side of the fourth lens, which is conducive to reducing the diameter of the rear port of the optical system.

[0078] In an exemplary embodiment, the fourth lens may have a negative optical power. The fourth lens may have a concave-concave surface. The fourth lens has a negative optical power, which is conducive to proper diffusion of light, and is matched with the positive optical power of the third lens, so that the light converged by the third lens is appropriately diverged. The object side surface is designed to be a concave surface, which cooperates with the convex surface of the image side surface of the third lens, so that the light transitions smoothly, the light deflection is small, the light energy loss is reduced, and it is conducive to improving the illumination of the edge field of view.

[0079] In an exemplary embodiment, the fourth lens may have a negative optical power. The fourth lens may have a concave-convex surface. The fourth lens has a negative optical power and has the function of diverging light, which is conducive to adjusting the direction of light collected by the third lens from different fields of view, and further diverging the light passing through the third lens, which is conducive to a smooth transition of light and improved resolution.

[0080] In an exemplary embodiment, the fifth lens may have positive power. The fifth lens may have a convex-convex surface type. The fifth lens has positive power and convex surfaces on both sides, which can converge light in steps and smoothly transition the peripheral field of view light, which is beneficial to reducing the sensitivity of the lens, so that the light emitted by the fourth lens is almost vertically incident on the object side of the fifth lens, the light transition is smooth, and the aberration is small, which can improve the resolution ability of the optical system and is beneficial to achieving high resolution; the image side of the fifth lens is designed to be convex, so that the edge field of view light is deflected inward after passing through the image side of the fifth lens, which is beneficial to reducing the diameter of the rear port of the optical system.

[0081] In an exemplary embodiment, the fifth lens may have positive power. The fifth lens may have a convex-concave surface. The fifth lens has positive power, and the object side is convex, which is conducive to converging light, so that the light emitted by the fourth lens is almost vertically incident on the object side of the fifth lens, the light transition is smooth, and the aberration is small, which can improve the resolution ability of the optical system and is conducive to achieving high resolution; the image side of the fifth lens is concave, which adjusts the optical path difference between light rays of different fields of view, appropriately weakens the convergence trend of light rays, and makes the subsequent light rays converge smoothly to the image plane.

[0082] In an exemplary embodiment, the fifth lens may have positive power. The fifth lens may have a concave-convex surface. The fifth lens has positive power, and the object side is designed to be a concave surface, which receives the light incident from the front through the negative film, which is conducive to smoothing the light trend, and at the same time, it is conducive to collecting as much light as possible from the fourth lens under a smaller aperture; the image side is designed to be a convex surface, which can make the divergent light converge to the rear optical system, shorten the optical path of the peripheral light to the image plane, which is conducive to reducing TTL and improving illumination.

[0083] In an exemplary embodiment, the optical lens may further include an aperture. The aperture may constrain the light path and control the light intensity. The aperture may be set at an appropriate position of the optical lens, for example, the aperture may be located between the second lens and the third lens. Reasonable setting of the position of the aperture may facilitate the effective convergence of light entering the optical system, reduce the lens aperture at the rear end of the optical system, and reduce the assembly sensitivity of the system. However, it should be noted that the position of the aperture disclosed herein is only an example and not a limitation; in alternative embodiments, the aperture may also be set at other positions according to actual needs.

[0084] In an exemplary embodiment, the third lens and the fourth lens may be glued together to form a double glued lens, and the third lens and the fourth lens may have opposite positive and negative optical power properties, so that the light can be smoothly transferred to the rear lens. The double glued lens may have the following advantages: reducing the air gap between the two lenses and reducing the total length of the system; the dispersion of the two lenses is complementary, which is conducive to reducing chromatic aberration and improving imaging quality; reducing the number of assembly parts between the two lenses, reducing the number of processes and reducing costs; further reducing the field curvature and correcting the off-axis point aberration of the system; and reasonably allocating the focal length, which is conducive to achieving thermal compensation and obtaining good temperature performance.

[0085] In an exemplary embodiment, one or more aspherical lenses may be included in the first to fifth lenses. Aspherical mirror surfaces have different curvatures at different positions, which can adjust the light trend to converge to the image plane, have better curvature radius characteristics, can effectively correct aberrations and field curvatures, and improve the resolution of the optical system; can improve distortion aberrations and improve astigmatism aberrations, eliminate aberrations that occur during imaging as much as possible, and improve the imaging quality of the lens. For example, in some embodiments, the first lens may be an aspherical lens; in some embodiments, the second lens may also be an aspherical lens; in some embodiments, the fifth lens may also be an aspherical lens. The present application does not specifically limit the number of spherical lenses and aspherical lenses. When focusing on the resolution quality, the number of aspherical lenses may be increased. In particular, in order to improve the resolution quality of the optical system, the first to fifth lenses may all be aspherical lenses.

[0086] In an exemplary embodiment, one or more of the first to fifth lenses may have an inflection point. For example, in some embodiments, the first lens may have an inflection point; the fifth lens may have an inflection point. With this arrangement, aberrations may be effectively corrected.

[0087] In an exemplary embodiment, the first lens, the second lens, the third lens, the fourth lens and the fifth lens may all be glass lenses. An optical lens made of glass can suppress the deviation of the back focus of the optical lens with temperature changes to improve the stability of the system. At the same time, the use of glass material can avoid problems such as lens imaging blur caused by high and low temperature changes in the use environment and affecting the normal use of the lens. Specifically, when focusing on temperature performance and resolution quality, the first lens to the fifth lens may all be glass aspherical lenses. In applications where temperature stability requirements are lower, the first lens to the fifth lens in the optical lens may also be made of plastic. Using plastic to make optical lenses can effectively reduce production costs. Of course, the first lens to the fifth lens in the optical lens may also be made of a combination of plastic and glass.

[0088] In an exemplary embodiment, the optical lens according to the present application may satisfy: 72≤(FOV×F) / H≤120, wherein FOV is the maximum field of view of the optical lens, F is the total effective focal length of the optical lens, and H is the image height corresponding to the maximum field of view of the optical lens. By controlling this conditional expression, when the focal length and image height of the lens are the same, a large field of view can be achieved, which is conducive to expanding the imaging range and capturing more picture information; when the field of view and image height of the lens are the same, the focal length is large and the distortion is large, which is conducive to achieving a large central angular resolution. More specifically, FOV, F and H may further satisfy: 75≤(FOV×F) / H≤100. By controlling the conditional expression in this range, when the focal length and image height of the lens are the same, a larger field of view can be achieved, which is more conducive to expanding the imaging range and capturing more picture information; when the field of view and image height of the lens are the same, the focal length is large and the distortion is large, which can further facilitate achieving a large central angular resolution. More specifically, FOV, F and H may further satisfy: 75.8794≤(FOV×F) / H≤92.2821.

[0089] In an exemplary embodiment, the optical lens according to the present application can satisfy: 0.75≤R11 / SAG11≤10, wherein R11 is the radius of curvature of the first side of the first lens, and SAG11 is the sagittal height of the first side of the first lens. The first lens is an aspherical surface, the central convex edge of the object side is gentle, and the edge angle is small. Reasonable setting of the ratio of the radius of curvature of the object side to the sagittal height is conducive to collecting large-angle light from the edge field of view, reducing the incident height of the light from the edge field of view, and is conducive to achieving large distortion and improving the angular resolution of the center; with the smaller radius of curvature of the center of the object side of the first lens, it can simultaneously achieve the telephoto characteristics of the entire lens and take into account the large field of view. More specifically, R11 and SAG11 can further satisfy: 0.9≤R11 / SAG11≤8.5. By controlling the conditional formula within this range, it can be more conducive to collecting large-angle light from the edge field of view, reducing the incident height of the light from the edge field of view, and further conducive to achieving large distortion and improving the angular resolution of the center; at the same time, it can be more conducive to achieving the telephoto characteristics of the entire lens and taking into account the large field of view. Furthermore, R11 and SAG11 may also satisfy: 1.312≤R11 / SAG11≤7.9092.

[0090] In an exemplary embodiment, the optical lens according to the present application can satisfy: 0.2≤(R21-d2) / R22≤8, where R21 is the radius of curvature of the first side of the second lens, d2 is the center thickness of the second lens on the optical axis, and R22 is the radius of curvature of the second side of the second lens. The optical power of the second lens is positive, and by controlling the radius of curvature and the center thickness of the second lens, it is designed into a special shape (such as concentric circles), which can smoothly receive the divergent light emitted from the negative of the first lens, expand the beam width, and smoothly transition the light to the rear optical system to reduce the generation of aberrations. At the same time, the optical path difference between light rays of different fields of view can be adjusted to achieve high resolution. More specifically, R21, d2 and R22 can further satisfy: 0.3≤(R21-d2) / R22≤6. By controlling the conditional formula within this range, the divergent light emitted by the first lens negative can be more smoothly received, the beam width can be expanded, and the light can be more smoothly transferred to the rear optical system to reduce the generation of aberrations. At the same time, the optical path difference between light rays of different fields of view can be adjusted, which is more conducive to achieving high resolution. Furthermore, R21, d2 and R22 can also satisfy: 0.3473≤(R21-d2) / R22≤5.4967.

[0091] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.8≤|R21 / F|≤8.5, wherein R21 is the radius of curvature of the first side of the second lens, and F is the total effective focal length of the optical lens. The optical power of the second lens is positive, and the ratio of the radius of curvature of the object side of the second lens to the focal length of the entire group is reasonably controlled, and in conjunction with the first lens in a meniscus shape with negative optical power, it is possible to correct aberrations and improve resolution; at the same time, the auxiliary light trend is smooth, which is beneficial for the entire lens to achieve telephoto characteristics. More specifically, R21 and F may further satisfy: 1.2≤|R21 / F|≤7.5. By controlling the conditional formula within this range, aberrations can be better corrected, which is more beneficial for improving resolution; at the same time, the auxiliary light trend is smooth, which is further beneficial for the entire lens to achieve telephoto characteristics. Furthermore, R21 and F may also satisfy: 1.7615≤|R21 / F|≤6.8217.

[0092] In an exemplary embodiment, the optical lens according to the present application can satisfy: 0.3≤R21 / R22≤7, wherein R21 is the radius of curvature of the first side of the second lens, and R22 is the radius of curvature of the second side of the second lens. By controlling the conditional expression and reasonably setting the ratio of the radius of curvature of the object side and the image side of the second lens, the light emitted from the first lens can be smoothly transitioned to the rear optical system, which is conducive to reducing the front port diameter of the lens, reducing the volume of the lens, and achieving miniaturization and cost reduction; used in conjunction with the negative optical power of the first lens, it is conducive to adjusting the optical path difference between light rays of different fields of view and achieving high resolution. More specifically, R21 and R22 can further satisfy: 0.5≤R21 / R22≤6. By controlling the conditional expression within this range, the light can be more smoothly transitioned to the rear optical system, which is more conducive to reducing the front port diameter of the lens, further reducing the volume of the lens, and further achieving miniaturization and cost reduction; at the same time, it is more conducive to adjusting the optical path difference between light rays of different fields of view and further achieving high resolution. Furthermore, R21 and R22 may also satisfy: 0.5167≤R21 / R22≤4.8921.

[0093] In an exemplary embodiment, the optical lens according to the present application may satisfy: 1.8≤F2 / F≤15, wherein F2 is the effective focal length of the second lens, and F is the total effective focal length of the optical lens. By controlling this conditional expression, the focal length of the second lens is reasonably set so that the light emitted from the image side enters the rear optical system almost vertically, the light transition is smooth, and the aberration is small, which can improve the resolving power of the optical system and is conducive to achieving high resolution. More specifically, F2 and F may further satisfy: 2≤F2 / F≤8.8. By controlling the conditional expression within this range, the light transition can be smoother, the aberration is smaller, and the resolving power of the optical system can be further improved, which is more conducive to achieving high resolution. Furthermore, F2 and F may also satisfy: 2.3998≤F2 / F≤9.4888.

[0094] In an exemplary embodiment, the optical lens according to the present application may satisfy: 1.5≤F34 / F≤6, wherein F34 is the combined focal length of the third lens and the fourth lens, and F is the total effective focal length of the optical lens. Since the effective focal length F2 of the second lens is relatively large, the light emitted through the second lens enters the third and fourth lenses more gently, reducing the sensitivity. Reasonable setting of the combined focal length of the third and fourth lenses is conducive to controlling the trend of light, and can continue to smoothly converge the light emitted through the second lens, compress the height of the light emitted from the fourth lens to the side of the image, so that the lens diameter is reduced, which is conducive to miniaturization of the lens. More specifically, F34 and F may further satisfy: 1.7920≤F34 / F≤4.5564. By controlling the conditional formula within this range, it can be more conducive to controlling the trend of light, more conducive to smoothly converging the light emitted through the second lens, compressing the height of the light emitted from the fourth lens to the side of the image, so that the lens diameter is reduced, which is further conducive to miniaturization of the lens.

[0095] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.3≤R11 / F≤2.8, wherein R11 is the radius of curvature of the first side of the first lens, and F is the total effective focal length of the optical lens. The first lens is aspherical, the object side is designed to be convex, and the central curvature radius value (paraxial position) is small. By reasonably controlling the ratio of the central curvature radius to the full focal length of the lens, the ability to converge paraxial small field light can be improved. In conjunction with the conditional formula 0.75≤R11 / SAG11≤10, controlling the range of the sagittal height and curvature radius of the object side of the first lens is beneficial to reducing the incident height of the edge field light, introducing large distortion, and facilitating the realization of large angular resolution in the center, improving the imaging quality in the central area, while also achieving the telephoto characteristics of the entire lens while taking into account a large field of view. More specifically, R11 and F can further satisfy: 0.45≤R11 / F≤2.3. By controlling the conditional expression within this range, the convergence capability of the near-axis small field of view light can be further improved; with the conditional expression 0.75≤R11 / SAG11≤10, it can be more conducive to achieving the central large angular resolution, improving the imaging quality of the central area, and at the same time, it is more conducive to achieving the telephoto characteristics of the entire lens while taking into account the large field of view. Furthermore, R11 and F can also satisfy: 0.6192≤R11 / F≤2.2527.

[0096] In an exemplary embodiment, the optical lens according to the present application may satisfy: arctan(1 / K(S1)) / θ1≤0.8, wherein arctan(1 / K(S1)) is the opening angle of the first side of the first lens, and θ1 is the opening angle on the first side of the first lens at one-quarter the aperture from the center of the lens. Controlling the center of the first lens to be convex and having a smaller opening angle at the edge is beneficial to collecting edge field light and reducing the height of incidence of edge field light, which is beneficial to achieving large distortion, that is, when the average angular resolution is consistent, the greater the difference between the central angular resolution and the peripheral angular resolution of the lens, the further beneficial it is to achieve a large central angular resolution. More specifically, arctan(1 / K(S1)) and θ1 may further satisfy: 0.0015≤arctan(1 / K(S1)) / θ1≤0.65. By controlling the conditional expression within this range, it can be more beneficial to achieve a large central angular resolution. Furthermore, arctan(1 / K(S1)) and θ1 may also satisfy: 0.0028≤arctan(1 / K(S1)) / θ1≤0.5912.

[0097] In an exemplary embodiment, the optical lens according to the present application may satisfy: 7≤arctan(SAG11 / (D / 2))≤28, wherein SAG11 is the sagittal height of the first side of the first lens, and D is the maximum effective aperture of the first side of the first lens corresponding to the maximum field of view angle of the optical lens. By controlling this conditional expression, the ratio of the sagittal height of the object side of the first lens to the effective aperture is controlled to be smaller, and the edge angle is smaller, which is conducive to collecting edge field light and reducing the height of the incident edge field light, which is conducive to achieving large distortion, that is, when the average angular resolution is consistent, the greater the difference between the central angular resolution and the peripheral angular resolution of the lens, the further conducive to achieving a large central angular resolution. More specifically, SAG11 and D may further satisfy: 10≤arctan(SAG11 / (D / 2))≤25. By controlling the conditional expression within this range, it may be more conducive to achieving a large central angular resolution. Furthermore, SAG11 and D may also satisfy: 12.057≤arctan(SAG11 / (D / 2))≤23.5381.

[0098] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.2≤(H / 2) / (F×tan(θ / 2))≤0.6, wherein H is the image height corresponding to the maximum field angle of the optical lens, F is the total effective focal length of the optical lens, and θ is the radian value of the maximum field angle of the optical lens. The focal length and field angle of the lens affect the ideal image height, and the distortion reflects the difference between the real image height and the ideal image height. By controlling this conditional expression, the real image height, focal length and field angle of the lens can be reasonably controlled, which is conducive to achieving large distortion. When the average angular resolution is consistent, the greater the difference between the central angular resolution and the peripheral angular resolution of the lens, the more conducive it is to achieving a large central angular resolution. More specifically, H, F and θ may further satisfy: 0.35≤(H / 2) / (F×tan(θ / 2))≤0.48. By controlling the conditional expression within this range, it can be further conducive to achieving a large central angular resolution. More specifically, H, F and θ may also satisfy: 0.3754≤(H / 2) / (F×tan(θ / 2))≤0.4565.

[0099] In an exemplary embodiment, the first side surface of the second lens is convex, and the second side surface is concave; the optical lens according to the present application can satisfy: 3.5≤R22 / F≤7, wherein R22 is the radius of curvature of the second side surface of the second lens, and F is the total effective focal length of the optical lens. Controlling the image side of the second lens to be concave and having a smaller radius of curvature of the concave surface is conducive to further proper divergence of light, smoothing the trend of light, reducing system sensitivity, allowing light to enter the rear system smoothly, and allowing as much large-angle light as possible to enter the rear optical system, which is conducive to improving the illumination of the edge field of view. More specifically, R22 and F can further satisfy: 4.85≤R22 / F≤5.58. By controlling the conditional formula within this range, it can be more conducive to smoothing the trend of light, further reducing system sensitivity, better allowing light to enter the rear system smoothly, and further allowing as much large-angle light as possible to enter the rear optical system, which is more conducive to improving the illumination of the edge field of view. More specifically, R22 and F may further satisfy: 4.9853≤R22 / F≤5.4267.

[0100] In an exemplary embodiment, the first side surface of the second lens is a convex surface, and the second side surface is a concave surface; the optical lens according to the present application can satisfy: 1.5≤(F34 / F)×(F5 / F)≤4.5, wherein F34 is the combined focal length of the third lens and the fourth lens, F5 is the effective focal length of the fifth lens, and F is the total effective focal length of the optical lens. When the second lens is a convex-concave meniscus and its image side curvature radius is small, the light can be appropriately diverged, and the third and fourth cemented lens groups and the fifth lens with positive optical power are arranged behind the second lens. By controlling the conditional expression, the focal length values ​​of F34 and F5 are reasonably controlled to be small, which is conducive to the effective convergence of light between the third lens to the fifth lens and the reduction of the total optical length. More specifically, F34, F5 and F can further satisfy: 3.02≤(F34 / F)×(F5 / F)≤3.6. By controlling the conditional expression in this range, it can be more conducive to the effective convergence of light between the third lens to the fifth lens, and the total optical length can be further reduced. More specifically, F34, F5 and F may also satisfy: 3.1709≤(F34 / F)×(F5 / F)≤3.5222.

[0101] In an exemplary embodiment, the first side surface of the second lens is a concave surface, and the second side surface is a convex surface; the optical lens according to the present application can satisfy: -4≤R22 / F≤-0.5, wherein R22 is the radius of curvature of the second side surface of the second lens, and F is the total effective focal length of the optical lens. Controlling the image side of the second lens to be convex, and the convex surface curvature radius is small, which is conducive to more reasonable convergence and emission of light, reducing the defocus between different fields of view, and improving the imaging quality. More specifically, R22 and F can further satisfy: -2.8≤R22 / F≤-0.8. By controlling the conditional formula within this range, it can further facilitate more reasonable convergence and emission of light, further reduce the defocus between different fields of view, and further improve the imaging quality. More specifically, R22 and F can also satisfy: -2.4809≤R22 / F≤-1.2542.

[0102] In an exemplary embodiment, the first side surface of the second lens is a concave surface, and the second side surface is a convex surface; the optical lens according to the present application can satisfy: 4≤(F34 / F)×(F5 / F)≤28, wherein F34 is the combined focal length of the third lens and the fourth lens, F5 is the effective focal length of the fifth lens, and F is the total effective focal length of the optical lens. When the second lens is a concave-convex meniscus shape and the radius of curvature of the image side surface is small, the light convergence ability is strong. A cemented lens group of the third lens and the fourth lens and a fifth lens with positive optical power are arranged behind the second lens. By controlling the conditional expression, at least one of the focal length values ​​of F34 and F5 is reasonably controlled to be larger, which is conducive to smoothly converging the light to the imaging surface and improving the imaging quality. More specifically, F34, F5 and F can further satisfy: 5≤(F34 / F)×(F5 / F)≤24. By controlling the conditional expression in this range, it is more conducive to smoothly converging the light to the imaging surface, which is further conducive to improving the imaging quality. More specifically, F34, F5 and F may also satisfy: 6.7349≤(F34 / F)×(F5 / F)≤19.2725.

[0103] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.35≤d2 / (d3+d4)≤1.2, wherein d2 is the center thickness of the second lens on the optical axis, d3 is the center thickness of the third lens on the optical axis, and d4 is the center thickness of the fourth lens on the optical axis. By controlling this conditional expression, the middle thickness of the second lens and the middle thickness of the third and fourth lenses of the cemented lens group are reasonably controlled, so that the lens thickness is relatively uniform, which can make the light trend smoother, reduce sensitivity, and improve resolution. More specifically, d2, d3, and d4 can further satisfy: 0.4≤d2 / (d3+d4)≤1.05. By controlling the conditional expression within this range, the light trend can be smoother, the sensitivity can be further reduced, and it is more conducive to improving resolution. More specifically, d2, d3, and d4 can also satisfy: 0.5245≤d2 / (d3+d4)≤0.9437.

[0104] In an exemplary embodiment, the optical lens according to the present application can satisfy: -4≤F1 / F≤-0.5, wherein F1 is the effective focal length of the first lens, and F is the total effective focal length of the optical lens. By controlling the conditional expression, the focal length of the first lens is reasonably set, so that the light entering through the object side is better compressed, which is conducive to collecting large-angle light in a limited radial space, while reducing the height of the light incident on the image side of the first lens, reducing the lens aperture, and facilitating miniaturization; and the light emitted through the image side is less deflected (the angle between the incident image side and the emitted image side light is smaller), which is conducive to reducing the sensitivity of the lens. More specifically, F1 and F can further satisfy: -3.4≤F1 / F≤-1.12. By controlling the conditional expression in this range, the light entering through the object side can be further compressed, which is more conducive to collecting large-angle light in a limited radial space, more conducive to reducing the height of the light incident on the image side of the first lens, further reducing the lens aperture, and more conducive to miniaturization; and further conducive to reducing the sensitivity of the lens. More specifically, F1 and F may also satisfy: -2.8876≤F1 / F≤-1.5180.

[0105] In an exemplary embodiment, the optical lens according to the present application may satisfy: 1.5≤F5 / F≤18, wherein F5 is the effective focal length of the fifth lens, and F is the total effective focal length of the optical lens. By controlling the conditional expression, the focal length of the fifth lens is reasonably set, so that the light emitted through the fourth lens has a smooth trend, further making the large-angle light transition as much as possible smoothly, reducing the light energy loss caused by the large angle between the main ray of the chip and the large field of view when the light reaches the image plane, which is beneficial to improve the illumination of the edge field of view. More specifically, F5 and F may further satisfy: 1.55≤F5 / F≤14. By controlling the conditional expression in this range, the light emitted through the fourth lens can be made smoother, further making the large-angle light transition as much as possible smoothly, further reducing the light energy loss caused by the large angle between the main ray of the chip and the large field of view when the light reaches the image plane, which is more beneficial to improve the illumination of the edge field of view. More specifically, F5 and F may also satisfy: 1.6363≤F5 / F≤9.0917.

[0106] In an exemplary embodiment, the optical lens according to the present application may satisfy: |arctan(1 / K(S1))|≤15, wherein arctan(1 / K(S1)) is the opening angle of the first side surface of the first lens. By controlling this conditional expression, the opening angle of the edge of the object side surface of the first lens is smaller, which is beneficial for collecting edge field light, and is beneficial for introducing large distortion into the edge field of view, thereby improving the angular resolution of the imaging center area. More specifically, arctan(1 / K(S1)) may further satisfy: |arctan(1 / K(S1))|≤12.5. By controlling the conditional expression within this range, it may be more beneficial for collecting edge field light, further beneficial for introducing large distortion into the edge field of view, thereby further improving the angular resolution of the imaging center area. More specifically, arctan(1 / K(S1)) may also satisfy: 0.0623≤|arctan(1 / K(S1))|≤11.0541.

[0107] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.1≤|(HF×θ) / (F×θ)|≤0.5, wherein H is the image height corresponding to the maximum field angle of the optical lens, F is the total effective focal length of the optical lens, and θ is the radian value of the maximum field angle of the optical lens. By controlling this conditional expression, it is ensured that the focal length of the lens is increased while the field angle of the lens and the size of the imaging surface remain unchanged, which is conducive to highlighting the imaging effect of the central area of ​​the lens imaging surface. More specifically, H, F and θ may further satisfy: 0.2≤|(HF×θ) / (F×θ)|≤0.4. By controlling the conditional expression within this range, it may be more conducive to highlighting the imaging effect of the central area of ​​the lens imaging surface. More specifically, H, F and θ may also satisfy: 0.2449≤|(HF×θ) / (F×θ)|≤0.3791.

[0108] In an exemplary embodiment, the optical lens according to the present application can satisfy: 0.9≤R32 / R41≤1.1, where R32 is the radius of curvature of the second side of the third lens, and R41 is the radius of curvature of the first side of the fourth lens. By controlling this conditional expression, the ratio of the radius of curvature of the image side of the third lens and the object side of the fourth lens is reasonably set. When the ratio is close to 1, it is beneficial for the light to flow smoothly between the third and fourth lenses; further, the two lenses can be glued together, and the glueing of the positive lens and the negative lens is beneficial to correct aberrations and improve resolution; at the same time, the use of glued parts is beneficial to reduce the sensitivity of the lens to tolerances such as tilt / eccentricity during the assembly process, improve resolution stability, and further improve system performance. More specifically, R32 and R41 can further satisfy: 0.95≤R32 / R41≤1.05. By controlling the conditional expression within this range, it is beneficial for the light to flow more smoothly between the third and fourth lenses. When the two lenses can be selectively glued together, it can further help correct aberrations and improve resolution. At the same time, it can further help reduce the lens' tolerance sensitivity to tilt / eccentricity during the assembly process, further improve resolution stability, and further improve system performance.

[0109] In an exemplary embodiment, the optical lens according to the present application can satisfy: d34 / TTL≤0.005, where d34 is the air gap between the third lens and the fourth lens on the optical axis, and TTL is the distance from the center of the first side surface of the first lens to the imaging surface of the optical lens on the optical axis. By controlling this conditional expression, the air gap between the third and fourth lenses is small, which is conducive to reducing the total optical length to achieve miniaturization; further, the two lenses can be glued together, and the glued positive lens and the negative lens are conducive to correcting aberrations and improving resolution; at the same time, the use of glued parts is conducive to reducing the lens's sensitivity to tolerances such as tilt / eccentricity during assembly, improving resolution stability, and further improving system performance. More specifically, d34 and TTL can further satisfy: d34 / TTL≤0.002. By controlling the conditional formula within this range, it can be more conducive to reducing the total optical length to achieve miniaturization; further, when two lenses with positive and negative opposite focal powers are glued together, it can be more conducive to correcting aberrations and improving resolution; at the same time, it is more conducive to reducing the tolerance sensitivity of the lens to tilt / eccentricity during the assembly process, further improving the resolution stability, and further improving the system performance. More specifically, d34 and TTL can also satisfy: d34 / TTL≤0.0015.

[0110] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.02≤TTL / H / FOV≤0.05, wherein TTL is the distance on the optical axis from the center of the first side of the first lens to the imaging surface of the optical lens, FOV is the maximum field of view of the optical lens, and H is the image height corresponding to the maximum field of view of the optical lens. By controlling this conditional expression, the image height, total optical length and maximum field of view corresponding to the maximum field of view of the optical lens can be reasonably controlled, which is beneficial to the overall lens to achieve a larger field of view and miniaturization. More specifically, TTL, H and FOV can further satisfy: 0.027≤TTL / H / FOV≤0.04. By controlling the conditional expression within this range, it can further help the overall lens to achieve a larger field of view and miniaturization. More specifically, TTL, H and FOV can also satisfy: 0.0293≤TTL / H / FOV≤0.0374.

[0111] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.45≤(F×θ) / D≤1.6, wherein F is the total effective focal length of the optical lens, θ is the radian value of the maximum field angle of the optical lens, and D is the maximum effective aperture of the first side of the first lens corresponding to the maximum field angle of the optical lens. By controlling this conditional expression, the radian value corresponding to the focal length of the entire group of optical lenses and the maximum field angle of the lens, as well as the front port diameter of the lens, can be reasonably controlled to achieve a longer focal length, a larger field of view, and miniaturization of the lens as a whole. More specifically, F, θ, and D can further satisfy: 0.6≤(F×θ) / D≤1.4. By controlling the conditional expression within this range, a longer focal length, a larger field of view, and miniaturization of the lens as a whole can be further achieved. More specifically, F, θ, and D can also satisfy: 0.7853≤(F×θ) / D≤1.2786.

[0112] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.3≤D / H / θ≤0.95, wherein D is the maximum effective aperture of the first side of the first lens corresponding to the maximum field of view of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, and θ is the radian value of the maximum field of view of the optical lens. By controlling this conditional formula, the image height corresponding to the maximum field of view of the lens, the radian value corresponding to the maximum field of view of the lens, and the front port diameter of the lens can be reasonably controlled, so that the lens can have a larger field of view and be miniaturized. More specifically, D, H, and θ can further satisfy: 0.56≤D / H / θ≤0.9. By controlling the conditional formula within this range, it can be more conducive to achieving a larger field of view and miniaturization of the lens. More specifically, D, H, and θ can also satisfy: 0.5975≤D / H / θ≤0.8052.

[0113] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.15≤D / H / F≤0.6, wherein D is the maximum effective aperture of the first side of the first lens corresponding to the maximum field angle of the optical lens, H is the image height corresponding to the maximum field angle of the optical lens, and F is the total effective focal length of the optical lens. By controlling this conditional expression, the focal length, maximum image height and front port diameter of the entire optical lens group can be reasonably controlled to provide the lens with the characteristics of a large target surface, a small aperture and a longer focal length. More specifically, D, H and F can further satisfy: 0.22≤D / H / F≤0.54. By controlling the conditional expression within this range, it can be more conducive to the lens having the characteristics of a large target surface, a small aperture and a longer focal length. More specifically, D, H and F can also satisfy: 0.2834≤D / H / F≤0.4785.

[0114] In an exemplary embodiment, the optical lens according to the present application may satisfy: 1.2≤F / ENPD≤2.0, wherein F is the total effective focal length of the optical lens, and ENPD is the entrance pupil diameter of the optical lens. By controlling this conditional expression, a small FNO of the lens is achieved, which is beneficial to increase the amount of light transmitted, so that the brightness of the peripheral field of view and the central field of view are more uniform. More specifically, F and ENPD may further satisfy: 1.3≤F / ENPD≤1.9. By controlling the conditional expression within this range, it may be more beneficial to increase the amount of light transmitted, and further make the brightness of the peripheral field of view and the central field of view more uniform. More specifically, F and ENPD may also satisfy: 1.4524≤F / ENPD≤1.8254.

[0115] The optical lens according to the exemplary embodiment of the present application includes five lenses with optical power, which are first to fifth lenses arranged in sequence from the first side to the second side along the optical axis, wherein the first lens has negative optical power, and its first side surface is convex, and the second side surface is concave; the second lens has positive optical power; the third lens and the fourth lens are cemented, and the third lens and the fourth lens have opposite optical power properties; the fifth lens has positive optical power; the maximum field of view FOV of the optical lens, the total effective focal length F of the optical lens, and the image height H corresponding to the maximum field of view of the optical lens meet 7 2≤(FOV×F) / H≤120; the radius of curvature R11 of the first side surface of the first lens and the sag height SAG11 of the first side surface of the first lens satisfy 0.75≤R11 / SAG11≤10; the radius of curvature R21 of the first side surface of the second lens and the center thickness d2 of the second lens on the optical axis and the radius of curvature R22 of the second side surface of the second lens satisfy 0.2≤(R21-d2) / R22≤8; the radius of curvature R21 of the first side surface of the second lens and the total effective focal length F of the optical lens satisfy 0.8≤|R21 / F|≤8.5. Through this setting of the lens, when the focal length and image height of the lens are the same, a large field of view can be achieved, which is conducive to expanding the imaging range and capturing more picture information; when the field of view and image height of the lens are the same, the focal length is large and the distortion is large, which is conducive to achieving a large central angular resolution. The first lens is aspherical, with a gentle convex edge at the center of the object side and a small edge angle. Reasonable setting of the ratio of the radius of curvature of the object side to the sagittal height is conducive to collecting large-angle light from the edge field of view, reducing the incident height of the light from the edge field of view, and is conducive to achieving large distortion and improving the angular resolution of the center; with the smaller radius of curvature at the center of the object side of the first lens, it can achieve the telephoto characteristics of the entire lens while taking into account the large field of view. The second lens has a positive focal power. By controlling the radius of curvature and the thickness of the second lens, it is designed into a special shape (such as concentric circles), which can smoothly receive the divergent light emitted by the first lens with negative focal power, expand the beam width, and smoothly transition the light to the rear optical system to reduce the generation of aberrations. At the same time, the optical path difference between light from different fields of view can be adjusted to achieve high resolution. At the same time, the ratio of the radius of curvature of the object side of the second lens with positive focal power to the focal length of the entire group can be reasonably controlled, and combined with the first lens with negative focal power and meniscus shape, it can correct aberrations and improve resolution; at the same time, the auxiliary light trend is smooth, which is conducive to the realization of telephoto characteristics of the entire lens.

[0116] The optical lens according to the exemplary embodiment of the present application adopts a five-piece lens architecture. By reasonably setting parameters such as lens optical power, surface shape, curvature radius, center thickness, aperture angle, sagittal height, and air spacing between lenses, the optical lens can have one or more beneficial effects such as large central angular resolution, large field of view, miniaturization, small aperture, high resolution, high relative illumination, high performance, and low sensitivity, so that the optical lens can better meet the high requirements of, for example, automotive applications.

[0117] However, it should be understood by those skilled in the art that, without departing from the technical solution claimed in the present application, the number of lenses constituting the lens can be changed to obtain the various results and advantages described in this specification. For example, although five lenses are described as an example in the embodiment, the optical lens is not limited to including five lenses. If necessary, the optical lens may also include other numbers of lenses. The following further describes a specific embodiment of the optical lens applicable to the above-mentioned embodiment with reference to the accompanying drawings. Example 1

[0118] The following reference Figure 1 An optical lens according to Example 1 of the present application is described. Figure 1 A schematic structural diagram of an optical lens according to Example 1 of the present application is shown.

[0119] like Figure 1 As shown, the optical lens includes a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis, and also includes, for example, a filter IR, a protective glass CG and an image plane IMA located on the second side of the fifth lens L5.

[0120] The first lens L1 is a convex-concave lens with negative focal power, whose first side surface S1 is convex and whose second side surface S2 is concave. The second lens L2 is a convex-concave lens with positive focal power, whose first side surface S3 is concave and whose second side surface S4 is convex. The third lens L3 is a convex-convex lens with positive focal power, whose first side surface S6 is convex and whose second side surface S7 is convex. The fourth lens L4 is a convex-concave lens with negative focal power, whose first side surface S7 is concave and whose second side surface S8 is convex. The fifth lens L5 is a convex-concave lens with positive focal power, whose first side surface S9 is convex and whose second side surface S10 is concave.

[0121] In this embodiment, the third lens L3 and the fourth lens L4 are cemented to form a doublet lens. The first lens L1 and the fifth lens L5 are aspherical lenses. The stop STO is located between the second lens L2 and the third lens L3.

[0122] In this embodiment, the optical filter IR has, for example, a first side surface S11 and a second side surface S12 ; the protective glass CG has, for example, a first side surface S13 and a second side surface S14 .

[0123] When the optical lens is used for video recording, light from an object can sequentially pass through surfaces S1 to S14 and finally form an image on an imaging surface; when the optical lens is used for projection, light from the light source side can sequentially pass through surfaces S14 to S1 and finally be projected onto a target object (not shown).

[0124] Table 1 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 1. Wherein, regarding "thickness / distance", it should be understood that the thickness / distance of the row where S1 is located is the center thickness of the first lens L1, the thickness / distance of the row where S2 is located is the air spacing distance between the first lens L1 and the second lens L2, the thickness / distance of the row where S3 is located is the center thickness of the second lens L2, the thickness / distance of the row where S4 is located is the air spacing distance between the second lens L2 and the aperture STO, and so on.

[0125] Table 1

[0126]

[0127] In this embodiment, the first side surface S1 and the second side surface S2 of the first lens L1 and the first side surface S9 and the second side surface S10 of the fifth lens L5 are aspherical surfaces. The surface shape of the aspherical lens can be defined by but not limited to the following aspherical surface formula:

[0128] (1)

[0129] Wherein, x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at a height of h along the optical axis; c is the paraxial curvature of the aspheric surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the curvature radius R in Table 1 above); k is the cone coefficient; Ai is the correction coefficient of the i-th order of the aspheric surface. The following Tables 2 and 3 give the cone coefficient k and the high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28 and A30 of the aspheric mirror surfaces S1-S2, S9-S10 that can be used in Example 1.

[0130] Table 2

[0131]

[0132] Table 3

[0133] Example 2

[0134] Figure 2 The structure diagram of the optical lens according to Embodiment 2 of the present application is shown. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted.

[0135] like Figure 2 As shown, the optical lens includes a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis, and also includes, for example, a filter IR, a protective glass CG and an image plane IMA located on the second side of the fifth lens L5.

[0136] In this embodiment, the positive and negative properties of the optical power and the surface shape of each lens from the first lens L1 to the fifth lens L5 are the same as those in Example 1. In this embodiment, the third lens L3 and the fourth lens L4 are cemented to form a double cemented lens. The first lens L1 and the fifth lens L5 are aspherical lenses. The aperture STO is located between the second lens L2 and the third lens L3.

[0137] Table 4 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 2. Tables 5 and 6 show the cone coefficients and high-order coefficients of each aspherical mirror surface S1-S2, S9-S10 that can be used in this embodiment, wherein each aspherical surface shape can be defined by the formula (1) given in the above-mentioned Example 1.

[0138] Table 4

[0139]

[0140] Table 5

[0141]

[0142] Table 6

[0143]

[0144] Fig.19 The distortion curves of the optical lenses according to Embodiment 1 and Embodiment 2 of the present application are shown. Fig.19 It can be seen that the distortion introduced at the edge of the optical lens makes the central imaging area have a higher resolution, thereby improving the imaging quality of the central area. The optical lenses of Examples 1 and 2 have the characteristics of large central angular resolution. Example 3

[0145] Figure 3 FIG. 2 shows a schematic diagram of the structure of an optical lens according to Embodiment 3 of the present application. Figure 3As shown, the optical lens includes a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis, and also includes, for example, a filter IR, a protective glass CG and an image plane IMA located on the second side of the fifth lens L5.

[0146] The difference from Example 1 is that, in this embodiment, the fourth lens L4 is a meniscus lens with negative optical power, and its first side surface S7 is a concave surface, and its second side surface S8 is a concave surface; the fifth lens L5 is a convex-convex lens with positive optical power, and its first side surface S9 is a convex surface, and its second side surface S10 is a convex surface.

[0147] In this embodiment, the third lens L3 and the fourth lens L4 are cemented to form a doublet lens. The first lens L1 and the fifth lens L5 are aspherical lenses. The stop STO is located between the second lens L2 and the third lens L3.

[0148] Table 7 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 3. Tables 8 and 9 show the cone coefficients and high-order coefficients of each aspherical mirror surface S1-S2, S9-S10 that can be used in this embodiment, wherein each aspherical surface shape can be defined by the formula (1) given in the above-mentioned Example 1.

[0149] Table 7

[0150]

[0151] Table 8

[0152]

[0153] Table 9

[0154] Example 4

[0155] Figure 4 FIG. 4 shows a schematic diagram of the structure of an optical lens according to Embodiment 4 of the present application. Figure 4 As shown, the optical lens includes a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis, and also includes, for example, a filter IR, a protective glass CG and an image plane IMA located on the second side of the fifth lens L5.

[0156] The difference from Example 1 is that, in this embodiment, the fourth lens L4 is a meniscus lens with negative optical power, and its first side surface S7 is a concave surface, and its second side surface S8 is a concave surface; the fifth lens L5 is a convex-convex lens with positive optical power, and its first side surface S9 is a convex surface, and its second side surface S10 is a convex surface.

[0157] In this embodiment, the third lens L3 and the fourth lens L4 are cemented to form a doublet lens. The first lens L1 and the fifth lens L5 are aspherical lenses. The stop STO is located between the second lens L2 and the third lens L3.

[0158] Table 10 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 4. Tables 11 and 12 show the cone coefficients and high-order coefficients of each aspherical mirror surface S1-S2, S9-S10 that can be used in this embodiment, wherein each aspherical surface shape can be defined by the formula (1) given in the above-mentioned Example 1.

[0159] Table 10

[0160]

[0161] Table 11

[0162]

[0163] Table 12

[0164]

[0165] Fig. 20 : shows the distortion curve diagram of the optical lens according to Embodiment 3 and Embodiment 4 of the present application, Fig. 20 It can be seen that the distortion introduced at the edge of the optical lens makes the central imaging area have a higher resolution, thereby improving the imaging quality of the central area. The optical lenses of Examples 3 and 4 have the characteristics of large central angular resolution. Example 5

[0166] Figure 5 FIG. 5 shows a schematic diagram of the structure of an optical lens according to Embodiment 5 of the present application. Figure 5 As shown, the optical lens includes a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis, and also includes, for example, a filter IR, a protective glass CG and an image plane IMA located on the second side of the fifth lens L5.

[0167] In this embodiment, the first lens L1 is a convex-concave lens with negative focal power, whose first side surface S1 is convex and whose second side surface S2 is concave. The second lens L2 is a convex-concave lens with positive focal power, whose first side surface S3 is concave and whose second side surface S4 is convex. The third lens L3 is a convex-concave lens with negative focal power, whose first side surface S6 is convex and whose second side surface S7 is concave. The fourth lens L4 is a convex-convex lens with positive focal power, whose first side surface S7 is convex and whose second side surface S8 is convex. The fifth lens L5 is a convex-convex lens with positive focal power, whose first side surface S9 is convex and whose second side surface S10 is convex.

[0168] In this embodiment, the third lens L3 and the fourth lens L4 are cemented to form a doublet lens. The first lens L1 is an aspherical lens. The stop STO is located between the second lens L2 and the third lens L3.

[0169] Table 13 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 5. Tables 14 and 15 show the conic coefficients and high-order coefficients of each aspherical mirror surface S1-S2 that can be used in this embodiment, wherein each aspherical surface shape can be defined by formula (1) given in the above-mentioned Example 1.

[0170] Table 13

[0171]

[0172] Table 14

[0173]

[0174] Table 15

[0175] Example 6

[0176] Figure 6 FIG. 4 shows a schematic diagram of the structure of an optical lens according to Embodiment 6 of the present application. Figure 6 As shown, the optical lens includes a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis, and also includes, for example, a filter IR, a protective glass CG and an image plane IMA located on the second side of the fifth lens L5.

[0177] In this embodiment, the positive and negative properties of the optical power and the surface shape of each lens from the first lens L1 to the fifth lens L5 are the same as those in Example 5. The third lens L3 and the fourth lens L4 are cemented to form a double cemented lens. The first lens L1 is an aspherical lens. The aperture STO is located between the second lens L2 and the third lens L3.

[0178] Table 16 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 6. Tables 17 and 18 show the conic coefficients and high-order coefficients of each aspherical mirror surface S1-S2 that can be used in this embodiment, wherein each aspherical surface shape can be defined by the formula (1) given in the above-mentioned Example 1.

[0179] Table 16

[0180]

[0181] Table 17

[0182]

[0183] Table 18

[0184]

[0185] Fig.21 : shows the distortion curve diagram of the optical lens according to Example 5 and Example 6 of the present application, Fig.21 It can be seen that the distortion introduced at the edge of the optical lens makes the central imaging area have a higher resolution, thereby improving the imaging quality of the central area. The optical lenses of Examples 5 and 6 have the characteristics of large central angular resolution. Example 7

[0186] Figure 7 FIG. 2 shows a schematic diagram of the structure of an optical lens according to Embodiment 7 of the present application. Figure 7 As shown, the optical lens includes a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis, and also includes, for example, a filter IR, a protective glass CG and an image plane IMA located on the second side of the fifth lens L5.

[0187] The difference from Example 5 is that in this embodiment, the third lens L3 is a convex-convex lens with positive power, and its first side surface S6 is a convex surface, and its second side surface S7 is a convex surface. The fourth lens L4 is a concave-convex lens with negative power, and its first side surface S7 is a concave surface, and its second side surface S8 is a convex surface. The fifth lens L5 is a convex-concave lens with positive power, and its first side surface S9 is a convex surface, and its second side surface S10 is a concave surface.

[0188] In this embodiment, the third lens L3 and the fourth lens L4 are cemented to form a doublet lens. The first lens L1, the second lens L2 and the fifth lens L5 are aspheric lenses. The stop STO is located between the second lens L2 and the third lens L3. The second side surface S10 of the fifth lens L5 has an inflection point.

[0189] Table 19 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 7. Tables 20 and 21 show the cone coefficients and high-order coefficients of each aspherical mirror surface S1-S2, S3-S4, S9-S10 that can be used in this embodiment, wherein each aspherical surface shape can be defined by the formula (1) given in the above-mentioned Example 1.

[0190] Table 19

[0191]

[0192] Table 20

[0193]

[0194] Table 21

[0195] Example 8

[0196] Figure 8 FIG. 8 shows a schematic diagram of the structure of an optical lens according to Example 8 of the present application. Figure 8 As shown, the optical lens includes a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis, and also includes, for example, a filter IR, a protective glass CG and an image plane IMA located on the second side of the fifth lens L5.

[0197] The difference from Example 5 is that in this embodiment, the third lens L3 is a convex-convex lens with positive power, and its first side surface S6 is a convex surface, and its second side surface S7 is a convex surface. The fourth lens L4 is a concave-convex lens with negative power, and its first side surface S7 is a concave surface, and its second side surface S8 is a convex surface. The fifth lens L5 is a convex-concave lens with positive power, and its first side surface S9 is a convex surface, and its second side surface S10 is a concave surface.

[0198] In this embodiment, the third lens L3 and the fourth lens L4 are cemented to form a doublet lens. The first lens L1, the second lens L2 and the fifth lens L5 are aspheric lenses. The stop STO is located between the second lens L2 and the third lens L3. The second side surface S10 of the fifth lens L5 has an inflection point.

[0199] Table 22 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 8. Tables 23 and 24 show the cone coefficients and high-order coefficients of each aspherical mirror surface S1-S2, S3-S4, S9-S10 that can be used in this embodiment, wherein each aspherical surface shape can be defined by formula (1) given in the above-mentioned Example 1.

[0200] Table 22

[0201]

[0202] Table 23

[0203]

[0204] Table 24

[0205]

[0206] Fig. 22 : shows the distortion curve diagram of the optical lens according to Example 7 and Example 8 of the present application, Fig. 22 It can be seen that the distortion introduced at the edge of the optical lens makes the central imaging area have a higher resolution, thereby improving the imaging quality of the central area. The optical lenses of Examples 7 and 8 have the characteristics of large central angular resolution. Example 9

[0207] Fig. 9 FIG. 4 shows a schematic diagram of the structure of an optical lens according to Example 9 of the present application. Fig. 9 As shown, the optical lens includes a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis, and also includes, for example, a filter IR, a protective glass CG and an image plane IMA located on the second side of the fifth lens L5.

[0208] The difference from Example 5 is that in this embodiment, the second lens L2 is a convex-concave lens with positive refractive power, the first side surface S3 of which is a convex surface, and the second side surface S4 is a concave surface.

[0209] In this embodiment, the third lens L3 and the fourth lens L4 are cemented to form a doublet lens. The first lens L1 and the fifth lens L5 are aspherical lenses. The stop STO is located between the second lens L2 and the third lens L3.

[0210] Table 25 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 9. Tables 26 and 27 show the conic coefficients and high-order coefficients of each aspherical mirror surface S1-S2, S9-S10 that can be used in this embodiment, wherein each aspherical surface shape can be defined by the formula (1) given in the above-mentioned Example 1.

[0211] Table 25

[0212]

[0213] Table 26

[0214]

[0215] Table 27

[0216] Example 10

[0217] Fig.10 FIG. 1 shows a schematic diagram of the structure of an optical lens according to Embodiment 10 of the present application. Fig.10 As shown, the optical lens includes a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis, and also includes, for example, a filter IR, a protective glass CG and an image plane IMA located on the second side of the fifth lens L5.

[0218] The difference from Example 5 is that in this embodiment, the second lens L2 is a convex-concave lens with positive refractive power, the first side surface S3 of which is a convex surface, and the second side surface S4 is a concave surface.

[0219] In this embodiment, the third lens L3 and the fourth lens L4 are cemented to form a doublet lens. The first lens L1 and the fifth lens L5 are aspherical lenses. The stop STO is located between the second lens L2 and the third lens L3.

[0220] Table 28 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 10. Tables 29 and 30 show the cone coefficients and high-order coefficients of each aspherical mirror surface S1-S2, S9-S10 that can be used in this embodiment, wherein each aspherical surface shape can be defined by formula (1) given in the above-mentioned Example 1.

[0221] Table 28

[0222]

[0223] Table 29

[0224]

[0225] Table 30

[0226]

[0227] Fig.23 : shows the distortion curve diagram of the optical lens according to Example 9 and Example 10 of the present application, Fig.23 It can be seen that the distortion introduced at the edge of the optical lens makes the central imaging area have a higher resolution, thereby improving the imaging quality of the central area. The optical lenses of Examples 9 and 10 have the characteristics of large central angular resolution. Embodiment 11

[0228] Fig.11 FIG. 1 shows a schematic diagram of the structure of an optical lens according to Example 11 of the present application. Fig.11 As shown, the optical lens includes a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis, and also includes, for example, a filter IR, a protective glass CG and an image plane IMA located on the second side of the fifth lens L5.

[0229] The difference from Example 5 is that in this embodiment, the third lens L3 is a meniscus lens with negative optical power, and its first side surface S6 is a concave surface, and its second side surface S7 is a concave surface.

[0230] In this embodiment, the third lens L3 and the fourth lens L4 are cemented to form a doublet lens. The first lens L1 and the fifth lens L5 are aspheric lenses. The stop STO is located between the second lens L2 and the third lens L3. The first side surface S1 of the first lens L1 and the first side surface S9 of the fifth lens L5 have an inflection point.

[0231] Table 31 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 11. Tables 32 and 33 show the cone coefficients and high-order coefficients of each aspherical mirror surface S1-S2, S9-S10 that can be used in this embodiment, wherein each aspherical surface shape can be defined by formula (1) given in the above-mentioned Example 1.

[0232] Table 31

[0233]

[0234] Table 32

[0235]

[0236] Table 33

[0237] Example 12

[0238] Fig.12 FIG. 1 shows a schematic diagram of the structure of an optical lens according to Embodiment 12 of the present application. Fig.12 As shown, the optical lens includes a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis, and also includes, for example, a filter IR, a protective glass CG and an image plane IMA located on the second side of the fifth lens L5.

[0239] The difference from Example 5 is that in this embodiment, the third lens L3 is a meniscus lens with negative optical power, and its first side surface S6 is a concave surface, and its second side surface S7 is a concave surface.

[0240] In this embodiment, the third lens L3 and the fourth lens L4 are cemented to form a doublet lens. The first lens L1 and the fifth lens L5 are aspheric lenses. The stop STO is located between the second lens L2 and the third lens L3. The first side surface S1 of the first lens L1 and the first side surface S9 of the fifth lens L5 have an inflection point.

[0241] Table 34 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 12. Tables 35 and 36 show the cone coefficients and high-order coefficients of each aspherical mirror surface S1-S2, S9-S10 that can be used in this embodiment, wherein each aspherical surface shape can be defined by formula (1) given in the above-mentioned Example 1.

[0242] Table 34

[0243]

[0244] Table 35

[0245]

[0246] Table 36

[0247]

[0248] Fig.24 1 shows a distortion curve diagram of the optical lens according to Example 11 and Example 12 of the present application, wherein Fig.24 It can be seen that the distortion introduced at the edge of the optical lens makes the central imaging area have a higher resolution, thereby improving the imaging quality of the central area. The optical lenses of Examples 11 and 12 have the characteristics of large central angular resolution. Embodiment 13

[0249] Fig.13 FIG. 1 shows a schematic diagram of the structure of an optical lens according to Example 13 of the present application. Fig.13 As shown, the optical lens includes a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis, and also includes, for example, a filter IR, a protective glass CG and an image plane IMA located on the second side of the fifth lens L5.

[0250] In this embodiment, the first lens L1 is a convex-concave lens with negative focal power, whose first side surface S1 is convex and whose second side surface S2 is concave. The second lens L2 is a convex-concave lens with positive focal power, whose first side surface S3 is concave and whose second side surface S4 is convex. The third lens L3 is a convex-convex lens with positive focal power, whose first side surface S6 is convex and whose second side surface S7 is convex. The fourth lens L4 is a convex-concave lens with negative focal power, whose first side surface S7 is concave and whose second side surface S8 is convex. The fifth lens L5 is a convex-concave lens with positive focal power, whose first side surface S9 is concave and whose second side surface S10 is convex.

[0251] In this embodiment, the third lens L3 and the fourth lens L4 are cemented to form a doublet lens. The first lens L1 and the fifth lens L5 are aspheric lenses. The stop STO is located between the second lens L2 and the third lens L3. The first side surface S9 and the second side surface S10 of the fifth lens L5 have an inflection point.

[0252] Table 37 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 13. Tables 38 and 39 show the cone coefficients and high-order coefficients of each aspherical mirror surface S1-S2, S9-S10 that can be used in this embodiment, wherein each aspherical surface shape can be defined by formula (1) given in the above-mentioned Example 1.

[0253] Table 37

[0254]

[0255] Table 38

[0256]

[0257] Table 39

[0258] Embodiment 14

[0259] Fig.14 FIG. 1 shows a schematic diagram of the structure of an optical lens according to Embodiment 14 of the present application. Fig.14 As shown, the optical lens includes a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis, and also includes, for example, a filter IR, a protective glass CG and an image plane IMA located on the second side of the fifth lens L5.

[0260] In this embodiment, the positive and negative properties of the optical power and the surface shape of each lens from the first lens L1 to the fifth lens L5 are the same as those in Example 13. In this embodiment, the third lens L3 and the fourth lens L4 are cemented to form a double cemented lens. The first lens L1 and the fifth lens L5 are aspherical lenses. The aperture STO is located between the second lens L2 and the third lens L3. The first side surface S9 and the second side surface S10 of the fifth lens L5 have an inflection point.

[0261] Table 40 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 14. Tables 41 and 42 show the cone coefficients and high-order coefficients of each aspherical mirror surface S1-S2, S9-S10 that can be used in this embodiment, wherein each aspherical surface shape can be defined by formula (1) given in the above-mentioned Example 1.

[0262] Table 40

[0263]

[0264] Table 41

[0265]

[0266] Table 42

[0267]

[0268] Fig.25 : shows a distortion curve diagram of the optical lens according to Example 13 and Example 14 of the present application, wherein Fig.25 It can be seen that the distortion introduced at the edge of the optical lens makes the central imaging area have a higher resolution, thereby improving the imaging quality of the central area. The optical lenses of Examples 13 and 14 have the characteristics of large central angular resolution. Embodiment 15

[0269] Fig.15 FIG. 1 shows a schematic diagram of the structure of an optical lens according to Embodiment 15 of the present application. Fig.15 As shown, the optical lens includes a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis, and also includes, for example, a filter IR, a protective glass CG and an image plane IMA located on the second side of the fifth lens L5.

[0270] The difference from Example 13 is that, in this embodiment, the third lens L3 is a meniscus lens with positive optical power, whose first side surface S6 is concave, and whose second side surface S7 is convex; the fifth lens L5 is a meniscus lens with positive optical power, whose first side surface S9 is convex, and whose second side surface S10 is convex.

[0271] In this embodiment, the third lens L3 and the fourth lens L4 are cemented to form a doublet lens. The first lens L1 and the fifth lens L5 are aspherical lenses. The stop STO is located between the second lens L2 and the third lens L3.

[0272] Table 43 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 15. Tables 44 and 45 show the cone coefficients and high-order coefficients of each aspherical mirror surface S1-S2, S9-S10 that can be used in this embodiment, wherein each aspherical surface shape can be defined by formula (1) given in the above-mentioned Example 1.

[0273] Table 43

[0274]

[0275] Table 44

[0276]

[0277] Table 45

[0278] Example 16

[0279] Fig.16 FIG. 1 shows a schematic diagram of the structure of an optical lens according to Example 16 of the present application. Fig.16 As shown, the optical lens includes a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis, and also includes, for example, a filter IR, a protective glass CG and an image plane IMA located on the second side of the fifth lens L5.

[0280] The difference from Example 13 is that, in this embodiment, the third lens L3 is a meniscus lens with positive optical power, whose first side surface S6 is concave, and whose second side surface S7 is convex; the fifth lens L5 is a meniscus lens with positive optical power, whose first side surface S9 is convex, and whose second side surface S10 is convex.

[0281] In this embodiment, the third lens L3 and the fourth lens L4 are cemented to form a doublet lens. The first lens L1 and the fifth lens L5 are aspherical lenses. The stop STO is located between the second lens L2 and the third lens L3.

[0282] Table 46 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 16. Tables 47 and 48 show the cone coefficients and high-order coefficients of each aspherical mirror surface S1-S2, S9-S10 that can be used in this embodiment, wherein each aspherical surface shape can be defined by formula (1) given in the above-mentioned Example 1.

[0283] Table 46

[0284]

[0285] Table 47

[0286]

[0287] Table 48

[0288]

[0289] Fig.26 : shows a distortion curve diagram of the optical lens according to Example 15 and Example 16 of the present application, wherein Fig.26 It can be seen that the distortion introduced at the edge of the optical lens makes the central imaging area have a higher resolution, thereby improving the imaging quality of the central area. The optical lenses of Examples 15 and 16 have the characteristics of large central angular resolution. Embodiment 17

[0290] Fig.17 FIG. 1 shows a schematic diagram of the structure of an optical lens according to Embodiment 17 of the present application. Fig.17 As shown, the optical lens includes a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis, and also includes, for example, a filter IR, a protective glass CG and an image plane IMA located on the second side of the fifth lens L5.

[0291] The difference from Example 13 is that, in this embodiment, the second lens L2 is a convex-concave lens with positive optical power, its first side surface S3 is a convex surface, and the second side surface S4 is a concave surface; the fifth lens L5 is a convex-convex lens with positive optical power, its first side surface S9 is a convex surface, and the second side surface S10 is a convex surface.

[0292] In this embodiment, the third lens L3 and the fourth lens L4 are cemented to form a doublet lens. The first lens L1 and the fifth lens L5 are aspheric lenses. The stop STO is located between the second lens L2 and the third lens L3. The first side surface S9 of the fifth lens L5 and the second side surface S10 of the fifth lens L5 have an inflection point.

[0293] Table 49 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 17. Tables 50 and 51 show the conic coefficients and high-order coefficients of each aspherical mirror surface S1-S2, S9-S10 that can be used in this embodiment, wherein each aspherical surface shape can be defined by formula (1) given in the above-mentioned Example 1.

[0294] Table 49

[0295]

[0296] Table 50

[0297]

[0298] Table 51

[0299] Embodiment 18

[0300] Fig.18 FIG. 1 shows a schematic diagram of the structure of an optical lens according to Example 18 of the present application. Fig.18 As shown, the optical lens includes a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis, and also includes, for example, a filter IR, a protective glass CG and an image plane IMA located on the second side of the fifth lens L5.

[0301] The difference from Example 13 is that, in this embodiment, the second lens L2 is a convex-concave lens with positive optical power, its first side surface S3 is a convex surface, and the second side surface S4 is a concave surface; the fifth lens L5 is a convex-convex lens with positive optical power, its first side surface S9 is a convex surface, and the second side surface S10 is a convex surface.

[0302] In this embodiment, the third lens L3 and the fourth lens L4 are cemented to form a doublet lens. The first lens L1 and the fifth lens L5 are aspheric lenses. The stop STO is located between the second lens L2 and the third lens L3. The first side surface S9 of the fifth lens L5 and the second side surface S10 of the fifth lens L5 have an inflection point.

[0303] Table 52 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 18. Tables 53 and 54 show the cone coefficients and high-order coefficients of each aspherical mirror surface S1-S2, S9-S10 that can be used in this embodiment, wherein each aspherical surface shape can be defined by formula (1) given in the above-mentioned Example 1.

[0304] Table 52

[0305]

[0306] Table 53

[0307]

[0308] Table 54

[0309]

[0310] Fig. 27 : shows a distortion curve diagram of the optical lens according to Example 17 and Example 18 of the present application, wherein Fig. 27 It can be seen that the distortion introduced at the edge of the optical lens makes the central imaging area have a higher resolution, thereby improving the imaging quality of the central area. The optical lenses of Examples 17 and 18 have the characteristics of large central angular resolution.

[0311] According to the optical lenses of each embodiment of the present application, a high resolution effect can be achieved. Specifically, each embodiment can meet the high resolution capability of 3M (three million) pixels, for example. Taking Embodiment 17 and Embodiment 18 as examples, Fig.28 The MTF diagram of the optical lens according to Example 17 and Example 18 of the present application is shown. MTF (Modulation Transfer Function) describes the ability of the optical system to "restore" the object side on the image side. Fig.28 It can be seen that the MTF peak value of the central field of view can reach above 0.8 at a spatial frequency of 83.00 lp / mm (83.00 line pairs / mm), and the optical lenses provided in Examples 17 and 18 have relatively high resolution.

[0312] In summary, the parameter values ​​in Examples 1 to 18 are respectively shown in Tables 55 and 56, where the units of F, TTL, BFL, H, D, ENPD, F1-F5, F34, and SAG11 are all millimeters (mm), the unit of FOV is degrees (°), and the units of θ and θ1 are radians.

[0313] Table 55

[0314]

[0315] Table 56

[0316]

[0317] Furthermore, Examples 1 to 18 satisfy the relationships shown in Tables 57 and 58 below, respectively.

[0318] Table 57

[0319]

[0320] Table 58

[0321]

[0322] The present application also provides an electronic device, which may include an optical lens according to the above-mentioned embodiment of the present application and an imaging element for converting an optical image formed by the optical lens into an electrical signal. The electronic device may be an independent electronic device such as a detection distance camera, or an imaging module integrated in a device such as a detection distance device. In addition, the electronic device may also be an independent imaging device such as a vehicle-mounted camera, or an imaging module integrated in a driving assistance system such as a vehicle-mounted camera.

[0323] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with the technical features with similar functions disclosed in this application (but not limited to) by each other to form a technical solution.

Claims

1. An optical lens, characterized in that: The optical lens includes, in sequence from the first side to the second side along the optical axis: A first lens having negative optical power, wherein the first side surface is convex and the second side surface is concave; a second lens having positive optical power; a third lens having optical power; a fourth lens having optical power; and a fifth lens having positive refractive power; The third lens and the fourth lens are glued together, and the third lens and the fourth lens have opposite positive and negative optical power properties; The number of lenses having optical power in the optical lens is five; The optical lens meets the following requirements: 72≤(FOV×F) / H≤120; 0.75≤R11 / SAG11≤10; 0.2≤(R21-d2) / R22≤8; 0.8≤|R21 / F|≤8.5; and 7≤arctan(SAG11 / (D / 2))≤28; Among them, FOV is the maximum field of view of the optical lens, F is the total effective focal length of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, R11 is the radius of curvature of the first side surface of the first lens, SAG11 is the vector height of the first side surface of the first lens, R21 is the radius of curvature of the first side surface of the second lens, d2 is the center thickness of the second lens on the optical axis, R22 is the radius of curvature of the second side surface of the second lens, and D is the maximum effective clear aperture of the first side surface of the first lens corresponding to the maximum field of view of the optical lens.

2. The optical lens according to claim 1, characterized in that: The first side surface and the second side surface of the second lens are respectively a convex surface and a concave surface, or respectively a concave surface and a convex surface.

3. The optical lens according to claim 1, characterized in that: The third lens has positive power, and the first side surface and the second side surface thereof are convex and convex respectively, or concave and convex respectively; Alternatively, the third lens has negative optical power, and the first side surface and the second side surface thereof are respectively concave and concave, or respectively convex and concave.

4. The optical lens according to claim 1, characterized in that: The fourth lens has positive power, and its first side surface and second side surface are convex and convex respectively; Alternatively, the fourth lens has negative optical power, and the first side surface and the second side surface thereof are respectively concave and concave, or respectively concave and convex.

5. The optical lens according to claim 1, characterized in that: The first side surface and the second side surface of the fifth lens are respectively a convex surface and a convex surface, or respectively a convex surface and a concave surface, or respectively a concave surface and a convex surface.

6. The optical lens according to any one of claims 1 to 5, characterized in that: A curvature radius R21 of the first side surface of the second lens and a curvature radius R22 of the second side surface of the second lens satisfy: 0.3≤R21 / R22≤7.

7. The optical lens according to any one of claims 1 to 5, characterized in that: The effective focal length F2 of the second lens and the total effective focal length F of the optical lens satisfy: 1.8≤F2 / F≤15.

8. The optical lens according to any one of claims 1 to 5, characterized in that: The effective focal length F2 of the second lens and the total effective focal length F of the optical lens satisfy: 2.3998≤F2 / F≤15.

9. The optical lens according to any one of claims 1 to 5, characterized in that: The combined focal length F34 of the third lens and the fourth lens and the total effective focal length F of the optical lens satisfy: 1.5≤F34 / F≤6.

10. The optical lens according to any one of claims 1 to 5, characterized in that: The curvature radius R11 of the first side surface of the first lens and the total effective focal length F of the optical lens satisfy: 0.3≤R11 / F≤2.

8.

11. The optical lens according to any one of claims 1 to 5, characterized in that: The opening angle arctan(1 / K(S1)) of the first side surface of the first lens and the opening angle θ1 on the first side surface of the first lens at a distance of one quarter of the aperture from the lens center satisfy: arctan(1 / K(S1)) / θ1≤0.

8.

12. The optical lens according to any one of claims 1 to 5, characterized in that: The image height H corresponding to the maximum field angle of the optical lens, the total effective focal length F of the optical lens and the arc value θ of the maximum field angle of the optical lens satisfy: 0.2≤(H / 2) / (F×tan(θ / 2))≤0.

6.

13. The optical lens according to claim 2, characterized in that: The first side surface of the second lens is a convex surface, and the second side surface is a concave surface; and The curvature radius R22 of the second side surface of the second lens and the total effective focal length F of the optical lens satisfy: 3.5≤R22 / F≤7.

14. The optical lens according to claim 13, characterized in that: The first side surface of the second lens is a convex surface, and the second side surface is a concave surface; and The combined focal length F34 of the third lens and the fourth lens, the total effective focal length F of the optical lens, and the effective focal length F5 of the fifth lens satisfy: 1.5≤(F34 / F)×(F5 / F)≤4.

5.

15. The optical lens according to claim 2, characterized in that: The first side surface of the second lens is a concave surface, and the second side surface is a convex surface; and The curvature radius R22 of the second side surface of the second lens and the total effective focal length F of the optical lens satisfy: -4≤R22 / F≤-0.

5.

16. The optical lens according to claim 15, characterized in that: The first side surface of the second lens is a concave surface, and the second side surface is a convex surface; and The combined focal length F34 of the third lens and the fourth lens, the total effective focal length F of the optical lens, and the effective focal length F5 of the fifth lens satisfy: 4≤(F34 / F)×(F5 / F)≤28.

17. The optical lens according to any one of claims 1 to 5, characterized in that: A center thickness d2 of the second lens on the optical axis, a center thickness d3 of the third lens on the optical axis, and a center thickness d4 of the fourth lens on the optical axis satisfy: 0.35≤d2 / (d3+d4)≤1.

2.

18. The optical lens according to any one of claims 1 to 5, characterized in that: A center thickness d2 of the second lens on the optical axis, a center thickness d3 of the third lens on the optical axis, and a center thickness d4 of the fourth lens on the optical axis satisfy: 0.35≤d2 / (d3+d4)≤1.

05.

19. The optical lens according to any one of claims 1 to 5, characterized in that: The optical lens meets at least one of the following conditions: -4≤F1 / F≤-0.5; 1.5≤F5 / F≤18; |arctan(1 / K(S1))|≤15; 0.1≤|(HF×θ) / (F×θ)|≤0.5; 0.9≤R32 / R41≤1.1; d34 / T TL≤0.005; 0.02≤TTL / H / FOV≤0.05; 0.45≤(F×θ) / D≤1.6; 0.3≤D / H / θ≤0.95; 0.15≤D / H / F≤0.6; 1.2≤F / ENPD≤2.0; Among them, F1 is the effective focal length of the first lens, F5 is the effective focal length of the fifth lens, arctan(1 / K(S1)) is the opening angle of the first side surface of the first lens, θ is the radian value of the maximum field of view angle of the optical lens, R32 is the curvature radius of the second side surface of the third lens, R41 is the curvature radius of the first side surface of the fourth lens, d34 is the air gap between the third lens and the fourth lens on the optical axis, TTL is the distance from the center of the first side surface of the first lens to the imaging surface of the optical lens on the optical axis, D is the maximum effective aperture of the first side surface of the first lens corresponding to the maximum field of view of the optical lens, and ENPD is the entrance pupil diameter of the optical lens.

20. The optical lens according to any one of claims 1 to 5, characterized in that: The optical lens meets at least one of the following conditions: 75≤(FOV×F) / H≤100; 0.9≤R11 / SAG11≤8.5; 0.3≤(R21-d2) / R22≤6; 1.2≤|R21 / F|≤7.5; 0.5≤R21 / R22≤6; 2≤F2 / F≤8.8; 0.45≤R11 / F≤2.3; 0.0015 ≤arctan(1 / K(S1)) / θ1≤0.65; 10≤arctan(SAG11 / (D / 2))≤25; 0.35≤(H / 2) / (F×tan(θ / 2))≤0.48; 4.85≤R22 / F≤5.58; 3.02≤(F34 / F)×(F5 / F)≤ 3.6; -2.8≤R22 / F≤-0.8; 5≤(F34 / F)×(F5 / F)≤24; 0.4≤d2 / (d3+d4)≤1.05; -3.4≤F1 / F≤-1.12; 1.55≤F5 / F≤14; |(HF×θ) / (F×θ)|≤0.4; d34 / TTL≤0.002; 0.027≤TTL / H / FOV≤0.04; 0.6≤(F×θ) / D≤1.4; 0.56≤D / H / θ≤0.9; 0.22≤D / H / F≤0.54; 1.3≤F / ENPD≤1.9; Wherein, F2 is the effective focal length of the second lens, arctan(1 / K(S1)) is the aperture angle of the first side surface of the first lens, θ1 is the aperture angle on the first side surface of the first lens at a quarter of the aperture from the center of the lens, SAG11 is the sagittal height of the first side surface of the first lens, D is the maximum effective aperture of the first side surface of the first lens corresponding to the maximum field of view of the optical lens, θ is the radian value of the maximum field of view of the optical lens, F34 is the combined focal length of the third lens and the fourth lens, F5 is the effective focal length of the fifth lens, d2 is the center thickness of the second lens on the optical axis, d3 is the center thickness of the third lens on the optical axis, d4 is the center thickness of the fourth lens on the optical axis, F1 is the effective focal length of the first lens, d34 is the air interval between the third lens and the fourth lens on the optical axis, TTL is the distance from the center of the first side surface of the first lens to the imaging surface of the optical lens on the optical axis, and ENPD is the entrance pupil diameter of the optical lens.

21. The optical lens according to any one of claims 1 to 5, characterized in that: The optical lens meets at least one of the following conditions: 75.8794≤(FOV×F) / H≤92.2821;1.312≤R11 / SAG11≤7.9092;0.3473≤(R21-d2) / R22≤5.4967;1.7615≤|R21 / F|≤6.8217;0.5167≤R21 / R22≤4.8921;2.3998≤F2 / F≤9.4888;1.7920≤F34 / F≤4.5564;0.6192≤R11 / F≤2.2527;0.0028≤arctan(1 / K(S1)) / θ1≤0.5912;12.057≤arctan(SAG11 / (D / 2))≤23.5381;0.3754≤(H / 2) / (F×tan(θ / 2))≤0.4565;4.9853≤R22 / F≤5.4267;3.1709≤(F34 / F)×(F5 / F)≤3.5222;-2.4809≤R22 / F≤-1.2542;6.7349≤(F34 / F)×(F5 / F)≤19.2725;0.5245≤d2 / (d3+d4)≤0.9437;-2.8876≤F1 / F≤-1.5180;1.6363≤F5 / F≤9.0917;0.0623≤|arctan(1 / K(S1))|≤11.0541;0.2449≤|(H-F×θ) / (F×θ)|≤0.3791;0.95≤R32 / R41≤1.05;d34 / TTL≤0.0015;0.0293≤TTL / H / FOV≤0.0374;0.7853≤(F×θ) / D≤1.2786;0.5975≤D / H / θ≤0.8052;0.2834≤D / H / F≤0.4785;1.4524≤F / ENPD≤1.8254; Wherein, F2 is the effective focal length of the second lens, arctan(1 / K(S1)) is the opening angle of the first side surface of the first lens, θ1 is the opening angle of the first side surface of the first lens at a distance of one quarter of the diameter from the center of the lens, SAG11 is the sag height of the first side surface of the first lens, D is the maximum effective aperture of the first side surface of the first lens corresponding to the maximum field of view of the optical lens, θ is the radian value of the maximum field of view of the optical lens, F34 is the combined focal length of the third lens and the fourth lens, F5 is the effective focal length of the fifth lens, and d2 is the maximum field of view of the optical lens. wherein d3 is the center thickness of the second lens on the optical axis, d4 is the center thickness of the fourth lens on the optical axis, F1 is the effective focal length of the first lens, R32 is the curvature radius of the second side surface of the third lens, R41 is the curvature radius of the first side surface of the fourth lens, d34 is the air gap between the third lens and the fourth lens on the optical axis, TTL is the distance from the center of the first side surface of the first lens to the imaging surface of the optical lens on the optical axis, and ENPD is the entrance pupil diameter of the optical lens.

22. An electronic device, characterized in that: comprising the optical lens according to any one of claims 1 to 21, and It also includes an imaging element for converting the optical image or optical information formed by the optical lens into an electrical signal, wherein the imaging element is located on the second side of the optical lens, and the light from the first side forms an image on the second side after passing through the optical lens; Alternatively, it further includes a light source, which is located on the second side of the optical lens, and the light emitted by the light source is projected to the first side of the optical lens after passing through the optical lens, forming an image or illuminating an area on the first side.

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