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, wherein the first lens has negative optical power and a convex-concave surface type; at least one of the second lens and the third lens has positive optical power; the fourth lens and the fifth lens are cemented, and the fourth lens and the fifth lens have opposite optical power properties, positive and negative. The effective focal length F2 of the second lens and the total effective focal length F of the lens satisfy 0.85≤|F2 / F|; the curvature radius 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 0.5≤R11 / SAG11≤3.6; the center thickness d1 and the edge thickness ED1 of the first lens satisfy 0.45≤d1 / ED1≤0.9; the maximum field of view FOV of the lens and the image height H corresponding to the maximum field of view of the lens and the total effective focal length F of the lens satisfy 80°≤(FOV×F) / H≤100°; the combined focal length F45 of the fourth and fifth lenses and the total effective focal length F of the lens satisfy 0.5≤F45 / F≤8.

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 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 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 performance characteristics such as large central angular resolution, large field of view, miniaturization, small aperture, high resolution, high relative illumination, 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 a first lens, a second lens, a third lens, a fourth lens and a fifth lens having optical power in sequence from a first side to a second side along an optical axis; the first lens has negative optical power, and its first side surface is a convex surface, and its second side surface is a concave surface; at least one of the second lens and the third lens has positive optical power; the fourth lens and the fifth lens are cemented, and the fourth lens and the fifth lens have opposite optical power properties of positive and negative; the number of lenses having optical power in the optical lens is five; the optical lens may satisfy the following conditional formulas: 0.85≤|F2 / F|, 0.5≤R11 / SAG1 1≤3.6, 0.45≤d1 / ED1≤0.9, 80°≤(FOV×F) / H≤100°, and 0.5≤F45 / F≤8, wherein F2 is the effective focal length of the second lens, F is the total effective focal length of the optical lens, R11 is the radius of curvature of the first side surface of the first lens, SAG11 is the sag height of the first side surface of the first lens, d1 is the center thickness of the first lens on the optical axis, ED1 is the edge thickness of the first lens, FOV is 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 F45 is the combined focal length of the fourth lens and the fifth lens.

[0005] In one embodiment, the second lens has negative optical power, a first side surface thereof is convex or concave, and a second side surface thereof is concave.

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

[0007] In one embodiment, the third lens has positive optical power, a first side surface of the third lens is convex, and a second side surface of the third lens is concave or convex.

[0008] In one embodiment, the third lens has negative optical power, a first side surface of the third lens is convex or concave, and a second side surface of the third lens is concave.

[0009] In one embodiment, the fourth lens has positive optical power, and its first side surface is convex, and its second side surface is convex; the fifth lens has negative optical power, and its first side surface is concave, and its second side surface is convex. Alternatively, the fourth lens has positive optical power, and its first side surface is convex, and its second side surface is convex; the fifth lens has negative optical power, and its first side surface is concave, and its second side surface is concave. Alternatively, the fourth lens has positive optical power, and its first side surface is concave, and its second side surface is convex; the fifth lens has negative optical power, and its first side surface is concave, and its second side surface is convex.

[0010] In one embodiment, the fourth lens has negative optical power, a first side surface thereof is convex, and a second side surface thereof is concave; the fifth lens has positive optical power, a first side surface thereof is convex, and a second side surface thereof is convex.

[0011] 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: 0.25≤R11 / F≤1.2.

[0012] 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: 0.35≤(H / 2) / (F×tan(θ / 2))≤0.45.

[0013] In one embodiment, a curvature radius R11 of the first side surface of the first lens and a curvature radius R12 of the second side surface of the first lens may satisfy: 1.2≤R11 / R12≤2.8.

[0014] In one embodiment, a curvature radius R42 of the second side surface of the fourth lens and a curvature radius R51 of the first side surface of the fifth lens may satisfy: 0.9≤R42 / R51≤1.1.

[0015] In one embodiment, the center thickness d4 of the fourth lens on the optical axis, the center thickness d5 of the fifth lens on the optical axis, and the distance TTL from the center of the first side surface of the first lens to the imaging surface of the optical lens on the optical axis may satisfy: 0.1≤(d4+d5) / TTL≤0.4.

[0016] In one embodiment, the effective focal length F3 of the third lens, the combined focal length F45 of the fourth lens and the fifth lens, and the total effective focal length F of the optical lens may satisfy: 0.1≤(1 / F3+1 / F45) / (1 / F)≤2.

[0017] In one embodiment, the center thickness d2 of the second lens on the optical axis and the distance TTL from the center of the first side surface of the first lens to the imaging surface of the optical lens on the optical axis may satisfy: 0.12≤d2 / TTL≤0.28.

[0018] In one embodiment, the center thickness d3 of the third lens on the optical axis and the distance TTL from the center of the first side surface of the first lens to the imaging surface of the optical lens on the optical axis may satisfy: 0.01≤d3 / TTL≤0.165.

[0019] In one embodiment, the air interval d23 between the second lens and the third lens on the optical axis and the distance TTL from the center of the first side surface of the first lens to the imaging surface of the optical lens on the optical axis may satisfy: d23 / TTL≤0.24.

[0020] In one embodiment, a distance TTL 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 a total effective focal length F of the optical lens may satisfy: 2.5≤TTL / F≤6.

[0021] In one embodiment, the effective focal length F5 of the fifth lens and the total effective focal length F of the optical lens may satisfy: |F5 / F|≤6.

[0022] In one embodiment, a distance BFL from the second side surface of the fifth lens to the imaging surface of the optical lens on the optical axis and a distance TTL from the center of the first side surface of the first lens to the imaging surface of the optical lens on the optical axis may satisfy: 0.1≤BFL / TTL≤0.24.

[0023] 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: 0.95≤|F2 / F|≤1.8; the total effective focal length F of the optical lens and the effective focal length F3 of the third lens may satisfy: -0.3≤F / F3≤-0.015.

[0024] 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: 1.3148≤|F2 / F|≤1.7922; the total effective focal length F of the optical lens and the effective focal length F3 of the third lens may satisfy: -0.2472≤F / F3≤-0.043.

[0025] 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: 2.4≤|F2 / F|≤150; the total effective focal length F of the optical lens and the effective focal length F3 of the third lens may satisfy: 0.15≤F / F3≤1.

[0026] 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: 2.4022≤|F2 / F|≤116.4137; the total effective focal length F of the optical lens and the effective focal length F3 of the third lens may satisfy: 0.3623≤F / F3≤0.8648.

[0027] In one embodiment, the optical lens may satisfy at least one of the following conditions: -5≤F1 / F≤-0.8; 0.1≤arctan(SAG11 / (D / 2))≤0.65; |arctan(1 / K(S1)) / θ1|≤2.5; 0.3≤|(HF×θ) / (F×θ)|≤0.4; 0.1≤R12 / F≤0.6; d45 / TTL≤0.01; TTL / H / FOV≤0.05; 0.5≤(F×θ) / D≤1.65; 0.35≤D / H / θ≤1.2; 0.2≤D / H / F≤0.6; 1.4≤F / ENPD≤1.8; -8≤F4 / F5≤-0.05; 0. 1≤d12 / TTL≤0.3; 0<|1 / F2| / (1 / F3+1 / F45)≤3.5; wherein, F1 is the effective focal length 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, 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 aperture from the center of the lens, d45 is the air gap between the fourth lens and the fifth lens on the optical axis, ENPD is the entrance pupil diameter of the optical lens, F4 is the effective focal length of the fourth lens, d12 is the air gap between the first lens and the second lens on the optical axis, and the meanings of the remaining parameters are the same as those described above.

[0028] In one embodiment, the optical lens may satisfy at least one of the following conditions: 1.1≤|F2 / F|≤195; 0.8≤R11 / SAG11≤3; 0.55≤d1 / ED1≤0.8; 87°≤(FOV×F) / H≤92°; 0.8≤F45 / F≤7.5; 0.45≤R11 / F≤1.0; 0.385≤(H / 2) / (F×tan(θ / 2))≤0.39; 1.5≤ R11 / R12≤2.5; 0.95≤R42 / R51≤1.05; 0.12≤(d4+d5) / TTL≤0.35; 0.2≤(1 / F3+1 / F45) / (1 / F)≤1.8 ;0.15≤d2 / TTL≤0.2; 0.02≤d3 / TTL≤0.11; 0.06≤d23 / TTL≤0.2; 2.85≤TTL / F≤5.6; 0.2≤|F5 / F|≤4 .5;0.12≤BFL / TTL≤0.22;-3.5≤F1 / F≤-1.2;0.24≤arctan(SAG11 / (D / 2))≤0.5;|arctan(1 / K( S1)) / θ1|≤2; 0.35≤|(HF×θ) / (F×θ)|≤0.36; 0.27≤R12 / F≤0.45; d45 / TTL≤0.005; 0.02≤TTL / H / F OV≤0.036; 0.78≤(F×θ) / D≤1.4; 0.475≤D / H / θ≤0.95; 0.27≤D / H / F≤0.5; 1.45≤F / ENPD≤1.78; -6.5≤F4 / F5≤-0.1; 0.12≤d12 / TTL≤0.285; 0.002≤|1 / F2| / (1 / F3+1 / F45)≤2.2; wherein the meaning of each parameter is the same as described above.

[0029] In one embodiment, the optical lens may satisfy at least one of the following conditions: 1.3148≤|F2 / F|≤116.4137; 1.2003≤R11 / SAG11≤2.5583; 0.619≤d1 / ED1≤0.77; 89.2171°≤(FOV×F) / H≤89.5099°; 1.108≤F45 / F≤4.9587; 0.5372≤R11 / F≤0.8903; 0.387≤(H / 2) / (F×tan(θ / 2))≤0.3883 ;1.7761≤R11 / R12≤2.3588; 0.98≤R42 / R51≤1.02; 0.1425≤(d4+d5) / TTL≤0.288; 0.3824≤(1 / F3+1 / F45) / (1 / F)≤1.3 65; 0.1915≤d2 / TTL≤0.1964; 0.0329≤d3 / TTL≤0.1096; 0.0606≤d23 / TTL≤0.1532; 3.8122≤TTL / F≤5.4763; 0.7381≤| F5 / F|≤3.3582;0.1404≤BFL / TTL≤0.2021;-3.0135≤F1 / F≤-1.6621;0.2834≤arctan(SAG11 / (D / 2))≤0.4385;0.008 8≤|arctan(1 / K(S1)) / θ1|≤1.8432; 0.3578≤|(HF×θ) / (F×θ)|≤0.3599; 0.2943≤R12 / F≤0.3998; d45 / TTL≤0.003; 0. 0236≤TTL / H / FOV≤0.034;0.8293≤(F×θ) / D≤1.2145;0.6122≤D / H / θ≤0.8989;0.2994≤D / H / F≤0.4385;1.5≤F / ENPD≤1.7;-4.3823≤F4 / F5≤-0.3323;0.1223≤d12 / TTL≤0.2804;0.0063≤|1 / F2| / (1 / F3+1 / F45)≤0.769;wherein, the meaning of each parameter is the same as described above.

[0030] 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.

[0031] 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; at least one of the second lens and the third lens has positive optical power; the fourth lens and the fifth lens are cemented, and the fourth lens and the fifth lens have opposite optical power properties; the effective focal length F2 of the second lens and the total effective focal length F of the optical lens satisfy 0.85≤|F2 / F|; the first side surface of the first lens The radius of curvature R11 and the sag height SAG11 of the first side surface of the first lens satisfy 0.5≤R11 / SAG11≤3.6; the center thickness d1 of the first lens on the optical axis and the edge thickness ED1 of the first lens satisfy 0.45≤d1 / ED1≤0.9; the maximum field of view FOV of the optical 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 80°≤(FOV×F) / H≤100°; the combined focal length F45 of the fourth lens and the fifth lens and the total effective focal length F of the lens satisfy 0.5≤F45 / F≤8. By setting the lens in this way, 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 ability of the optical system and is conducive to achieving high resolution; the first lens can be an aspherical surface, the central shape of the object side is curved, the edge is smooth, and the edge angle is small. The ratio of the object side sagittal height to the curvature radius is reasonably set, which is conducive to collecting large-angle light from the edge field of view and reducing the incident height of the edge field of view light, which is conducive to achieving large distortion and improving the angular resolution of the center; with the smaller curvature radius of the object side center of the first lens, the telephoto characteristics of the entire lens can be achieved while taking into account the large field of view; the ratio of the center thickness to the edge thickness of the first lens is reasonably controlled, and the center thickness is smaller than the edge thickness. The thickness of the edge can adjust the optical path difference between the central light and the edge light in the first lens, which is beneficial to achieving a large angular resolution in the center; the focal length, image height and field angle of the lens are reasonably controlled, which is beneficial to the overall realization of the long focus and large field of view characteristics; when the focal length and image height of the lens are the same, a large field angle can be achieved, which is beneficial to expanding the imaging range and capturing more picture information; when the field angle and image height are the same, the focal length is large and the distortion is large, which is beneficial to achieving a large angular resolution in the center; controlling the combined focal length of the fourth and fifth lens cementations to be positive is beneficial to converging the light that is generally divergent in front of the fourth lens, which is beneficial to shortening the total optical length; further, reasonably controlling the value of F45 / F within a certain range can correct aberrations to improve resolution while making the light trend smooth, thereby achieving a small CRA.

[0032] 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 center angular resolution, large field of view, miniaturization, small aperture, high resolution, high relative illumination, and low sensitivity, so that the optical lens can better meet the high requirements of, for example, automotive applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] 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:

[0034] Figures 1 to 13 They are schematic diagrams showing the structures of optical lenses according to Embodiments 1 to 13 of the present application respectively;

[0035] Fig.14 A distortion curve diagram showing the optical lens according to Example 1 of the present application;

[0036] Figures 15 to 27 The MTF diagrams of the optical lenses according to Examples 1 to 13 of the present application are shown respectively. DETAILED DESCRIPTION

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] Unless otherwise defined, all terms (including technical terms and scientific terms) used in this article have the same meaning as commonly understood by ordinary technicians in the field to which this application belongs. It should also be understood that terms (such as terms 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.

[0044] 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.

[0045] The features, principles and other aspects of the present application are described in detail below.

[0046] 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.

[0047] 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.

[0048] 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).

[0049] 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.

[0050] 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 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. 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.

[0051] 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, so that the light emitted by the first lens can be converged; 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.

[0052] In an exemplary embodiment, the second lens may have positive power. The second lens may have a convex-convex surface. The second lens has positive power and a biconvex surface, which can compress the front light twice continuously, so that the light trend does not converge too quickly, reduce sensitivity, and effectively compress the back port diameter and the total optical length.

[0053] 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, so that the light can be more reasonably converged and emitted, reduce the defocus between different fields of view, and improve the imaging quality.

[0054] In an exemplary embodiment, the second lens may have a negative optical power. The second lens may have a convex-concave surface. The second lens has a negative optical power, which can smoothly receive and gently diverge the front light, and the convex-concave meniscus shape is conducive to smoothing the light trend and improving the resolution.

[0055] In an exemplary embodiment, the second lens may have negative optical power. The second lens may have a concave-concave surface. The second lens has negative optical power and a biconcave surface, and can diverge light. The object side is concave and can smoothly receive the front light. The image side is concave to expand the light to achieve the required size for imaging.

[0056] 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.

[0057] In an exemplary embodiment, the third lens may have positive power. The third lens may have a convex-concave surface. The third lens has positive power, and the object side is designed to be convex, which is conducive to better compressing the front light, and the image side is concave, which can properly diverge the light and smooth the trend of the light, reducing the generation of aberrations.

[0058] 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 is conducive to 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 the compression of the light emitted from the image side of the second lens and entering the third lens, thereby reducing the loss of light energy.

[0059] 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.

[0060] In an exemplary embodiment, the fourth lens may have a positive optical power. The fourth lens may have a convex-convex surface. The fourth lens has a positive optical power, which is conducive to the convergence of light, so that the light emitted by the fourth lens has a smooth 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.

[0061] In an exemplary embodiment, the fourth lens may have positive power. The fourth lens may have a concave-convex surface. The fourth lens has positive power, the object side surface is concave, which can help the light to move smoothly, and the image side surface is convex, which can converge the light and reduce the total optical length.

[0062] In an exemplary embodiment, the fourth lens may have a negative optical power. The fourth lens may have a convex-concave 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 smooth transition of light and image resolution improvement.

[0063] In an exemplary embodiment, the fifth lens may have positive focal power. The fifth lens may have a convex-convex surface. The fifth lens has positive focal power, and both sides are convex, which can converge light in steps and smoothly transition the peripheral field of view light, which is conducive 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 conducive 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 conducive to reducing the diameter of the rear port of the optical system.

[0064] In an exemplary embodiment, the fifth lens may have negative power. The fifth lens may have a concave-concave surface. The fifth lens has negative power and a biconcave surface, which can diverge light and balance the aberration with the convex surface of the image side of the fourth lens in front. The light trend is smooth, which is conducive to achieving a long back focus.

[0065] In an exemplary embodiment, the fifth lens may have negative power. The fifth lens may have a concave-convex surface. The fifth lens has negative power and can diverge light, which is conducive to achieving a long back focus. The object side is a concave surface to smooth the light trend, and the image side is a convex surface to converge light and achieve a small CRA.

[0066] 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.

[0067] In an exemplary embodiment, the fourth lens and the fifth lens may be cemented into a doublet lens, and the fourth lens and the fifth lens may have opposite positive and negative optical power properties, so that the light can be smoothly transferred to the rear lens. The doublet 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.

[0068] In an exemplary embodiment, one or more aspherical lenses may be included in the first to fifth lenses. The aspherical mirror surface has 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 an exemplary embodiment, the first lens may be an aspherical lens, and the first lens may have an inflection point. The center shape of the first lens is flat and the edge shape is curved, which can collect and compress light with a large field angle to enter the system and improve the resolution.

[0069] 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 can be increased. In particular, in order to improve the resolution quality of the optical system, the first lens to the fifth lens can all be aspherical lenses.

[0070] In an exemplary embodiment, one or more of the first to fifth lenses may have an inflection point. For example, in an exemplary embodiment, the first lens may have an inflection point. With this arrangement, aberrations may be effectively corrected.

[0071] 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.

[0072] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.85≤|F2 / F|, 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 resolution of the optical system and facilitate high resolution. More specifically, F2 and F may further satisfy: 1.1≤|F2 / F|≤195. By controlling the conditional expression within this range, it is more conducive to making the light emitted from the image side transition smoothly, and the aberration is smaller, which further improves the resolution of the optical system and facilitates high resolution. More specifically, F2 and F may further satisfy: 1.3148≤|F2 / F|≤116.4137.

[0073] In an exemplary embodiment, the optical lens according to the present application can satisfy: 0.5≤R11 / SAG11≤3.6, 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 object side center is curved, the edge is flat, 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 height of the incident 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, the telephoto characteristics of the whole lens can be achieved while taking into account a large field of view. More specifically, R11 and SAG11 can further satisfy: 0.8≤R11 / SAG11≤3. By controlling the conditional formula in this range, it can be more conducive to collecting large-angle light from the edge field of view, reducing the height of the incident 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 whole lens while taking into account a large field of view. Furthermore, R11 and SAG11 may also satisfy: 1.2003≤R11 / SAG11≤2.5583.

[0074] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.45≤d1 / ED1≤0.9, wherein d1 is the center thickness of the first lens on the optical axis, and ED1 is the edge thickness of the first lens. By controlling this conditional expression, the ratio of the center thickness to the edge thickness of the first lens is reasonably controlled within a certain range, and the center thickness is less than the edge thickness, so that the optical path difference between the center light and the edge light in the first lens can be adjusted, which is beneficial to achieving a large central angular resolution. More specifically, d1 and ED1 may further satisfy: 0.55≤d1 / ED1≤0.8. By controlling the conditional expression within this range, it is more beneficial to adjust the optical path difference between the center light and the edge light in the first lens, which is more beneficial to achieving a large central angular resolution. Furthermore, d1 and ED1 may also satisfy: 0.619≤d1 / ED1≤0.77.

[0075] In an exemplary embodiment, the optical lens according to the present application may satisfy: 80°≤(FOV×F) / H≤100°, where 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, the focal length, image height and field of view of the lens can be reasonably controlled, which is conducive to the overall realization of telephoto and large field of view characteristics; 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 angle and image height are the same, the focal length is larger and the distortion is larger, which is conducive to achieving a large central angular resolution. More specifically, FOV, F and H can further satisfy: 87°≤(FOV×F) / H≤92°. By controlling the conditional formula within this range, it is further conducive to the overall realization of the long focus and large field of view characteristics; when the lens focal length and image height are the same, a larger field of view angle can be achieved, which is more conducive to expanding the imaging range and capturing more image information; when the field of view angle and image height are the same, the focal length is larger and the distortion is larger, which is more conducive to achieving a large central angular resolution. Furthermore, FOV, F and H can also satisfy: 89.2171°≤(FOV×F) / H≤89.5099°.

[0076] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.5≤F45 / F≤8, wherein F45 is the combined focal length of the fourth lens and the fifth lens, and F is the total effective focal length of the optical lens. By controlling the conditional expression, the combined focal length of the fourth and fifth lens cemented parts is controlled to be positive, which is conducive to the convergence of the light that is divergent as a whole in front of the fourth lens, and is conducive to shortening the total optical length. Further, by reasonably controlling the value of F45 / F within a certain range, it is possible to correct aberrations and improve resolution while making the light trend smoother, and achieve a small CRA. More specifically, F45 and F may further satisfy: 0.8≤F45 / F≤7.5. By controlling the conditional expression within this range, it is further conducive to the convergence of the light that is divergent as a whole in front of the fourth lens, and is more conducive to shortening the total optical length; it is possible to better correct aberrations and improve resolution while making the light trend smoother, and is more conducive to achieving a small CRA. Further, F45 and F may also satisfy: 1.108≤F45 / F≤4.9587.

[0077] In an exemplary embodiment, the optical lens according to the present application can satisfy: 0.25≤R11 / F≤1.2, where 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 radius of curvature (paraxial position) is small. By controlling this conditional expression, the ratio of the central radius of curvature to the whole focal length can be controlled, and the convergence ability of the paraxial small field of view light can be improved; in conjunction with the conditional expression 0.5≤R11 / SAG11≤3.6, the range of the sag height and the radius of curvature of the object side of the first lens is controlled, which is conducive to reducing the incident height of the edge field of view light, introducing large distortion, and achieving large central angular resolution, improving the imaging quality of the central area, and at the same time achieving the telephoto characteristics of the entire lens while taking into account the large field of view. More specifically, R11 and F can further satisfy: 0.45≤R11 / F≤1.0. 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 0.5≤R11 / SAG11≤3.6, the range of the sag height and curvature radius of the object side of the first lens can be controlled, which is more conducive to reducing the incident height of the edge field of view light, introducing large distortion, and further facilitating the realization of large central angular resolution, improving the imaging quality of the central area, and at the same time better realizing the telephoto characteristics of the entire lens while taking into account the large field of view. Furthermore, R11 and F can also satisfy: 0.5372≤R11 / F≤0.8903.

[0078] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.35≤(H / 2) / (F×tan(θ / 2))≤0.45, 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: 0.385≤(H / 2) / (F×tan(θ / 2))≤0.39. By controlling the conditional expression within this range, it is further conducive to achieving large distortion and further conducive to achieving a large central angular resolution. Furthermore, H, F and θ may also satisfy: 0.387≤(H / 2) / (F×tan(θ / 2))≤0.3883.

[0079] In an exemplary embodiment, the optical lens according to the present application may satisfy: 1.2≤R11 / R12≤2.8, wherein R11 is the radius of curvature of the first side of the first lens, and R12 is the radius of curvature of the second side of the first lens. The object side of the first lens is conducive to light convergence and to lowering the light, and the image side concave surface of the first lens is conducive to light divergence and reducing the front port diameter; controlling the ratio of the two sides of the first lens to satisfy the conditional expression is conducive to the smooth trend of the central light, reducing the generation of aberrations, improving the resolution, and achieving the imaging effect of the telephoto highlighting the central area. More specifically, R11 and R12 may further satisfy: 1.5≤R11 / R12≤2.5. By controlling the conditional expression within this range, it can be more conducive to reducing the front port diameter; it is more conducive to the smooth trend of the central light, further reducing the generation of aberrations, improving the resolution, and better achieving the imaging effect of the telephoto highlighting the central area. Further, R11 and R12 may also satisfy: 1.7761≤R11 / R12≤2.3588.

[0080] In an exemplary embodiment, the optical lens according to the present application can satisfy: 0.9≤R42 / R51≤1.1, wherein R42 is the radius of curvature of the second side of the fourth lens, and R51 is the radius of curvature of the first side of the fifth lens. By controlling this conditional expression, the ratio of the radius of curvature of the image side of the fourth lens and the object side of the fifth lens can be reasonably controlled. When the ratio is close to 1, it is beneficial for the light to flow smoothly between the fourth lens and the fifth lens. For example, R42 / R51 can take values ​​of 0.95, 1.02, etc.; further, when the ratio of R42 to R51 is equal to 1, the two lenses can be glued together. The glueing of the positive lens and the negative lens is beneficial to correcting aberrations and improving resolution; at the same time, the use of glued parts is beneficial to reducing the lens's sensitivity to tolerances such as tilt / eccentricity during assembly, improving resolution quality and stability, and further improving system performance. More specifically, R42 and R51 can further satisfy: 0.95≤R42 / R51≤1.05. By controlling the conditional formula within this range, when the ratio is close to 1, it is beneficial for the light to move more smoothly between the fourth lens and the fifth lens; when the ratio of the two is equal to 1, the two lenses can be glued together, and the glued positive lens and the negative lens are 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 of tilt / eccentricity during the assembly process, further improve the resolution quality and stability, and further improve the system performance. Furthermore, R42 and R51 can also satisfy: 0.98≤R42 / R51≤1.02.

[0081] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.1≤(d4+d5) / TTL≤0.4, wherein d4 is the center thickness of the fourth lens on the optical axis, d5 is the center thickness of the fifth 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. The fourth lens and the fifth lens may be glued together to form a glued part. By controlling the conditional expression and setting a reasonable thickness of the glued part, the light rays converged by the positive focal length of the glued part can pass through a thicker length on the basis of the whole system meeting the miniaturization requirement, thereby reducing the sensitivity of the system, allowing the light rays to smoothly transition to the image plane, and improving the resolution quality. More specifically, d4, d5 and TTL may further satisfy: 0.12≤(d4+d5) / TTL≤0.35. By controlling the conditional expression within this range, the sensitivity of the system can be further reduced on the basis of the whole system meeting the miniaturization requirement, allowing the light rays to more smoothly transition to the image plane, and further improving the resolution quality. Furthermore, d4, d5 and TTL may also satisfy: 0.1425≤(d4+d5) / TTL≤0.288.

[0082] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.1≤(1 / F3+1 / F45) / (1 / F)≤2, wherein F3 is the effective focal length of the third lens, F45 is the combined focal length of the fourth lens and the fifth lens, and F is the total effective focal length of the optical lens. By controlling this conditional expression, the focal length of the third lens and the fourth and fifth lens bonding parts can be reasonably controlled, so that after the light is diverged by the first and second lenses, the third lens and the fourth and fifth lens bonding parts can regulate the overall trend of the light, and the light is effectively compressed in the rear group of the system, reducing the overall aperture size of the lens, and with a reasonable thickness of the third lens and the bonding parts, the light is smoothly converged to the imaging surface in the rear group, reducing sensitivity, and achieving a smaller total optical length and high resolution. More specifically, F3, F45 and F can further satisfy: 0.2≤(1 / F3+1 / F45) / (1 / F)≤1.8. By controlling the conditional formula within this range, the light can be more effectively compressed in the rear group of the system, further reducing the overall aperture size of the lens. With a reasonable thickness of the third lens and the cemented component, the light can be more smoothly converged to the imaging surface in the rear group, further reducing the sensitivity, achieving a smaller total optical length and high resolution. More specifically, F3, F45 and F can also satisfy: 0.3824≤(1 / F3+1 / F45) / (1 / F)≤1.365.

[0083] In an exemplary embodiment, the optical lens according to the present application can satisfy: 0.12≤d2 / TTL≤0.28, wherein d2 is the center thickness of the second 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 center thickness of the second lens can be reasonably controlled, which is conducive to smooth transition of light on the basis of miniaturization, reducing sensitivity, while ensuring the processability of the lens and improving the stability of the lens; further, controlling the center thickness of the second lens to be smaller is conducive to reducing the total optical length of the entire system; in combination with the focal length of the second lens and the conditional expression 0.85≤|F2 / F|, it is conducive to the light passing through the second lens in a gentle trend, reducing the generation of aberrations and improving the resolution quality. More specifically, d2 and TTL can further satisfy: 0.15≤d2 / TTL≤0.2. By controlling the conditional expression within this range, it is more conducive to smooth transition of light on the basis of miniaturization, further reducing sensitivity, while better ensuring the processability of the lens, further improving the stability of the lens; and more conducive to reducing the total optical length of the entire system; combined with the focal length of the second lens and the conditional expression 0.85≤|F2 / F|, it is more conducive to light passing through the second lens in a gentle trend, further reducing the generation of aberrations and improving the resolution quality. More specifically, d2 and TTL can further satisfy: 0.1915≤d2 / TTL≤0.1964.

[0084] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.01≤d3 / TTL≤0.165, wherein d3 is the center thickness of the third 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 center thickness of the third lens can be reasonably controlled, which is conducive to reducing the total optical length of the entire system, and the degree of deflection of the light incident on the third lens and the light exiting the third lens is small, which reduces the generation of aberrations and improves the resolution. More specifically, d3 and TTL can further satisfy: 0.02≤d3 / TTL≤0.11. By controlling the conditional expression within this range, it can be more conducive to reducing the total optical length of the entire system, and it is more conducive to the degree of deflection of the light incident on the third lens and the light exiting the third lens, further reducing the generation of aberrations and further improving the resolution. More specifically, d3 and TTL can also satisfy: 0.0329≤d3 / TTL≤0.1096.

[0085] In an exemplary embodiment, the optical lens according to the present application may satisfy: d23 / TTL≤0.24, wherein d23 is the air gap between the second lens and the third 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 the conditional expression, the air gap between the second lens and the third lens is reasonably controlled, which is conducive to a smooth transition of light between the second lens and the third lens under the premise of miniaturization, thereby improving the imaging quality; further, when the air gap is controlled to be larger, the system sensitivity can be further reduced. More specifically, d23 and TTL may further satisfy: 0.06≤d23 / TTL≤0.2. By controlling the conditional expression within this range, it is more conducive to a smooth transition of light between the second lens and the third lens under the premise of miniaturization, thereby further improving the imaging quality; when the air gap is controlled to be larger, the system sensitivity can be further reduced. More specifically, d23 and TTL may also satisfy: 0.0606≤d23 / TTL≤0.1532.

[0086] In an exemplary embodiment, the optical lens according to the present application may satisfy: 2.5≤TTL / F≤6, wherein 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 F is the total effective focal length of the optical lens. By controlling this conditional expression, the ratio of TTL to F can be reasonably controlled within a certain range, which is conducive to miniaturization and telephoto of the entire lens. More specifically, TTL and F can further satisfy: 2.85≤TTL / F≤5.6. By controlling the conditional expression within this range, it can further facilitate miniaturization and telephoto of the entire lens. More specifically, TTL and F can also satisfy: 3.8122≤TTL / F≤5.4763.

[0087] In an exemplary embodiment, the optical lens according to the present application may satisfy: |F5 / F|≤6, 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 this conditional expression, the focal length of the fifth lens can be reasonably controlled to be shorter, and the short focal length is conducive to collecting light and balancing the back focal length. More specifically, F5 and F may further satisfy: 0.2≤|F5 / F|≤4.5. By controlling the conditional expression within this range, it may be more conducive to the light collection of the fifth lens and more conducive to balancing the back focal length. More specifically, F5 and F may further satisfy: 0.7381≤|F5 / F|≤3.3582.

[0088] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.1≤BFL / TTL≤0.24, wherein BFL is the distance from the second side of the fifth lens to the imaging surface of the optical lens on the optical axis, and TTL is the distance from the center of the first side of the first lens to the imaging surface of the optical lens on the optical axis. By controlling this conditional expression, the length of the back focus is balanced on the basis of a small total optical length of the entire system, which is beneficial to module assembly and improves the imaging performance of the lens. More specifically, BFL and TTL may further satisfy: 0.12≤BFL / TTL≤0.22. By controlling the conditional expression within this range, the length of the back focus can be better balanced on the basis of a small total optical length of the entire system, which is further beneficial to module assembly and further improves the imaging performance of the lens. More specifically, BFL and TTL may also satisfy: 0.1404≤BFL / TTL≤0.2021.

[0089] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.95≤|F2 / F|≤1.8 and -0.3≤F / F3≤-0.015, wherein F2 is the effective focal length of the second lens, F is the total effective focal length of the optical lens, and F3 is the effective focal length of the third lens. By controlling this conditional expression, the relationship between the focal lengths of the second lens and the third lens and the entire system can be reasonably controlled. When the focal length of the second lens is small, the light rays converged at the second lens may have a tendency to converge, and at this time, the negative focal length may be allocated to the third lens, which is conducive to moderate beam expansion of the light rays, so that the light rays exit the third lens with an overall gentle trend, reduce the generation of aberrations, and achieve high resolution. More specifically, F2, F3 and F may further satisfy: 1.3148≤|F2 / F|≤1.7922 and -0.2472≤F / F3≤-0.043. By controlling the conditional formula within this range, when the focal length of the second lens is smaller, it is more conducive to making the light exit the third lens in an overall smooth trend, further reducing the generation of aberrations and achieving high resolution.

[0090] In an exemplary embodiment, the optical lens according to the present application may satisfy: 2.4≤|F2 / F|≤150 and 0.15≤F / F3≤1, wherein F2 is the effective focal length of the second lens, F is the total effective focal length of the optical lens, and F3 is the effective focal length of the third lens. By controlling the conditional expression, the relationship between the focal lengths of the second lens and the third lens and the entire system is reasonably controlled. When the focal length of the second lens is large, the light rays are smoothly diverged through the first lens and the second lens as a whole, and less aberration is generated; at this time, the positive focal length assigned to the third lens is conducive to the convergence of light rays and the reduction of the total optical length. More specifically, F2, F3 and F may further satisfy: 2.4022≤|F2 / F|≤116.4137 and 0.3623≤F / F3≤0.8648. By controlling the conditional expression in this range, when the focal length of the second lens is large, it is more conducive to the convergence of light rays, which is further conducive to the reduction of the total optical length.

[0091] In an exemplary embodiment, the optical lens according to the present application can satisfy: -5≤F1 / F≤-0.8, 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; at the same time, 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: -3.5≤F1 / F≤-1.2. By controlling the conditional expression in this range, the light entering through the object side is further compressed, which is more 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, further reducing the lens aperture, and further facilitating miniaturization; at the same time, it can further help reduce the sensitivity of the lens. More specifically, F1 and F may also satisfy: -3.0135≤F1 / F≤-1.6621.

[0092] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.1≤arctan(SAG11 / (D / 2))≤0.65, 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 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 reasonably controlled to be smaller, so that the side edge angle of the first side of the lens is smaller, which is conducive to collecting edge field light, reducing the height of the incident edge field light, and 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 it is conducive to achieving a large central angular resolution. More specifically, SAG11 and D can further satisfy: 0.24≤arctan(SAG11 / (D / 2))≤0.5. By controlling the conditional formula within this range, it can be more conducive to collecting edge field light, reducing the incident height of edge field light, and further 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 large central angular resolution. More specifically, SAG11 and D can also satisfy: 0.2834≤arctan(SAG11 / (D / 2))≤0.4385.

[0093] In an exemplary embodiment, the optical lens according to the present application may satisfy: |arctan(1 / K(S1)) / θ1|≤2.5, wherein arctan(1 / K(S1)) is the opening angle of the first side surface of the first lens, and θ1 is the opening angle of the first side surface of the first lens at a distance of one quarter of the aperture from the center of the lens. By controlling this conditional expression, the opening angle at the edge of the first side surface of the first lens is controlled to be smaller, and the opening angle at the center is controlled to be larger, which is conducive to large distortion of the edge field of view, and it is easy to distinguish between the edge field of view light and the center field of view light. In the case of a large field of view angle, large distortion is introduced by the edge, and a large angular resolution in the center can be achieved. More specifically, arctan(1 / K(S1)) and θ1 can further satisfy: |arctan(1 / K(S1)) / θ1|≤2. By controlling the conditional expression within this range, the first side edge angle of the first lens can be better controlled to be smaller and the center angle to be larger, which is more conducive to large distortion of the edge field of view and easier to distinguish between edge field of view light and center field of view light. In the case of a large field of view angle, large distortion is introduced by the edge, which can further facilitate the realization of large angular resolution in the center. More specifically, arctan(1 / K(S1)) and θ1 can also satisfy: 0.0088≤|arctan(1 / K(S1)) / θ1|≤1.8432.

[0094] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.3≤|(HF×θ) / (F×θ)|≤0.4, 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: 0.35≤|(HF×θ) / (F×θ)|≤0.36. By controlling the conditional expression within this range, it is more conducive to ensuring 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 further conducive to highlighting the imaging effect of the central area of ​​the lens imaging surface. Furthermore, H, F and θ may also satisfy: 0.3578≤|(HF×θ) / (F×θ)|≤0.3599.

[0095] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.1≤R12 / F≤0.6, wherein R12 is the radius of curvature of the second side of the first lens, and F is the total effective focal length of the optical lens. By controlling this conditional expression, the radius of curvature of the second side of the first lens is reasonably controlled to be smaller, so that the shape of the second side is curved, which is conducive to the edge light trend to be deflected toward the center and enter the rear optical system, and realize imaging with a large field of view angle. More specifically, R12 and F may further satisfy: 0.27≤R12 / F≤0.45. By controlling the conditional expression within this range, the curvature of the shape of the second side of the first lens can be better controlled, which is more conducive to the edge light trend to be deflected toward the center and enter the rear optical system, and is more conducive to realizing imaging with a large field of view angle. More specifically, R12 and F may also satisfy: 0.2943≤R12 / F≤0.3998.

[0096] In an exemplary embodiment, the optical lens according to the present application can satisfy: d45 / TTL≤0.01, wherein d45 is the air gap between the fourth lens and the fifth 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 fourth and fifth lenses can be reasonably controlled to be small, which is conducive to reducing the total optical length to achieve miniaturization; further, when the air gap d45 between the two lenses is equal to 0, the two lenses can be glued together, and the glueing of the positive lens and the negative lens is 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, d45 and TTL can further satisfy: d45 / TTL≤0.005. By controlling the conditional formula within this range, it can be more conducive to reducing the total optical length and realizing miniaturization. Furthermore, when the air interval d45 between the two lenses is equal to 0, the two lenses can be glued together. The glued positive lens and the negative lens are further conducive to correcting aberrations and improving resolution. At the same time, the use of glued parts is further conducive to reducing the tolerance sensitivity of the lens to tilt / eccentricity during the assembly process, further improving the stability of resolution, and further improving system performance. More specifically, d45 and TTL can also satisfy: d45 / TTL≤0.003.

[0097] In an exemplary embodiment, the optical lens according to the present application may satisfy: 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: 0.02≤TTL / H / FOV≤0.036. By controlling the conditional expression within this range, it can be further beneficial to the overall lens to achieve a larger field of view and miniaturization. More specifically, TTL, H and FOV can also satisfy: 0.0236≤TTL / H / FOV≤0.034.

[0098] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.5≤(F×θ) / D≤1.65, 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: 0.78≤(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: 0.8293≤(F×θ) / D≤1.2145.

[0099] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.35≤D / H / θ≤1.2, 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 of the optical 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 to achieve a longer focal length, a larger field of view, and miniaturization of the lens as a whole. More specifically, D, H, and θ can further satisfy: 0.475≤D / H / θ≤0.95. By controlling the conditional formula 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, D, H, and θ can also satisfy: 0.6122≤D / H / θ≤0.8989.

[0100] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.2≤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, and the lens can be provided 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: 0.27≤D / H / F≤0.5. 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: 0.2994≤D / H / F≤0.4385.

[0101] In an exemplary embodiment, the optical lens according to the present application may satisfy: 1.4≤F / ENPD≤1.8, 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, making the brightness of the peripheral field of view and the central field of view more uniform. More specifically, F and ENPD may further satisfy: 1.45≤F / ENPD≤1.78. By controlling the conditional expression within this range, it may be more beneficial to achieve a small FNO, 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: 1.5≤F / ENPD≤1.7.

[0102] In an exemplary embodiment, the optical lens according to the present application may satisfy: -8≤F4 / F5≤-0.05, wherein F4 is the effective focal length of the fourth lens, and F5 is the effective focal length of the fifth lens. By controlling the conditional expression, the optical powers of the fourth lens and the fifth lens are controlled to be one positive and one negative, which is conducive to balancing aberrations and improving resolution; further, controlling the ratio of the two within the range of the conditional expression is conducive to the smooth movement of light between the fourth lens and the fifth lens, thereby reducing sensitivity. More specifically, F4 and F5 may further satisfy: -6.5≤F4 / F5≤-0.1. By controlling the conditional expression within this range, it may be more conducive to balancing aberrations and improving resolution; and it may further be conducive to the smooth movement of light between the fourth lens and the fifth lens, thereby further reducing sensitivity. More specifically, F4 and F5 may also satisfy: -4.3823≤F4 / F5≤-0.3323.

[0103] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.1≤d12 / TTL≤0.3, wherein d12 is the air gap between the first lens and the second 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 first lens and the second lens can be reasonably controlled, which is beneficial to regulating the optical path difference of the light emitted from the first lens on the basis of miniaturization, so as to achieve telephoto and wide field angle imaging of the whole system. More specifically, d12 and TTL can further satisfy: 0.12≤d12 / TTL≤0.285. By controlling the conditional expression in this range, it is further beneficial to regulate the optical path difference of the light emitted from the first lens on the basis of miniaturization, so as to better achieve telephoto and wide field angle imaging of the whole system. More specifically, d12 and TTL can also satisfy: 0.1223≤d12 / TTL≤0.2804.

[0104] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0<|1 / F2| / (1 / F3+1 / F45)≤3.5, wherein F2 is the effective focal length of the second lens, F3 is the effective focal length of the third lens, and F45 is the combined focal length of the fourth lens and the fifth lens. By controlling this conditional expression, the focal length relationship between the second lens, the third lens, and the cemented component can be reasonably controlled, which is beneficial for the light to converge smoothly to the imaging surface after being diverged by the first lens, thereby achieving high resolution and low TTL. More specifically, F2, F3, and F45 may further satisfy: 0.002≤|1 / F2| / (1 / F3+1 / F45)≤2.2. By controlling the conditional expression within this range, it can further facilitate the light to converge smoothly to the imaging surface after being diverged by the first lens, which is more beneficial for achieving high resolution and low TTL. More specifically, F2, F3 and F45 may also satisfy: 0.0063≤|1 / F2| / (1 / F3+1 / F45)≤0.769.

[0105] 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; at least one of the second lens and the third lens has positive optical power; the fourth lens and the fifth lens are cemented, and the fourth lens and the fifth lens have opposite optical power properties; the effective focal length F2 of the second lens and the total effective focal length F of the optical lens satisfy 0.85≤|F2 / F|; the first side surface of the first lens The radius of curvature R11 and the sag height SAG11 of the first side surface of the first lens satisfy 0.5≤R11 / SAG11≤3.6; the center thickness d1 of the first lens on the optical axis and the edge thickness ED1 of the first lens satisfy 0.45≤d1 / ED1≤0.9; the maximum field of view FOV of the optical 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 80°≤(FOV×F) / H≤100°; the combined focal length F45 of the fourth lens and the fifth lens and the total effective focal length F of the lens satisfy 0.5≤F45 / F≤8. By setting the lens in this way, 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 ability of the optical system and is conducive to achieving high resolution; the first lens can be an aspherical surface, the central shape of the object side is curved, the edge is smooth, and the edge angle is small. The ratio of the object side sagittal height to the curvature radius is reasonably set, which is conducive to collecting large-angle light from the edge field of view and reducing the incident height of the edge field of view light, which is conducive to achieving large distortion and improving the angular resolution of the center; with the smaller curvature radius of the object side center of the first lens, the telephoto characteristics of the entire lens can be achieved while taking into account the large field of view; the ratio of the center thickness to the edge thickness of the first lens is reasonably controlled, and the center thickness is smaller than the edge thickness. The thickness of the edge can adjust the optical path difference between the central light and the edge light in the first lens, which is beneficial to achieving a large angular resolution in the center; the focal length, image height and field angle of the lens are reasonably controlled, which is beneficial to the overall realization of the long focus and large field of view characteristics; when the focal length and image height of the lens are the same, a large field angle can be achieved, which is beneficial to expanding the imaging range and capturing more picture information; when the field angle and image height are the same, the focal length is large and the distortion is large, which is beneficial to achieving a large angular resolution in the center; controlling the combined focal length of the fourth and fifth lens cementations to be positive is beneficial to converging the light that is generally divergent in front of the fourth lens, which is beneficial to shortening the total optical length; further, reasonably controlling the value of F45 / F within a certain range can correct aberrations to improve resolution while making the light trend smooth, thereby achieving a small CRA.

[0106] 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 center angular resolution, large field of view, miniaturization, small aperture, high resolution, high relative illumination, and low sensitivity, so that the optical lens can better meet the high requirements of, for example, automotive applications.

[0107] 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

[0108] 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.

[0109] 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.

[0110] 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 negative focal power, whose first side surface S3 is convex and whose second side surface S4 is concave. 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-convex lens with positive focal power, whose first side surface S8 is convex and whose second side surface S9 is convex. The fifth lens L5 is a convex-convex lens with negative focal power, whose first side surface S9 is concave and whose second side surface S10 is convex.

[0111] In this embodiment, the fourth lens L4 and the fifth lens L5 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.

[0112] 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 .

[0113] 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).

[0114] 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.

[0115] Table 1

[0116]

[0117] In this embodiment, the first side surface S1 and the second side surface S2 of the first lens L1 are aspherical surfaces. The surface shape of the aspherical lens can be defined by but not limited to the following aspherical surface formula:

[0118] (1)

[0119] 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. Table 2 below gives the cone coefficient k and the high-order coefficients A4, A6, A8, A10, A12, A14, A16 and A18 of the aspheric mirror surfaces S1-S2 that can be used in Example 1.

[0120] Table 2

[0121]

[0122] Fig.14 FIG. 4 shows a distortion curve diagram of an optical lens according to Embodiment 1 of the present application, wherein Fig.14It can be seen that the distortion introduced at the edge of the optical lens makes the central imaging area have a higher resolution, improves the imaging quality of the central area, and the optical lens of Example 1 has the characteristic of large central angular resolution. In addition, the optical lenses of the following embodiments (Examples 2 to 13) of the present application can also present similar distortion effects, and each has the characteristic of large central angular resolution, which will not be described in detail below.

[0123] In addition, the optical lenses according to the various embodiments of the present application can achieve high resolution effects. Specifically, each embodiment can meet the high resolution capability of, for example, 3M (three million) pixels. Fig.15 The MTF diagram of the optical lens according to Example 1 of the present application is shown. MTF (Modulation Transfer Function) describes the ability of the optical system to "restore" the object side in the image side. Fig.15 It can be seen that the MTF peak value of the central field of view can reach 0.86 at a spatial frequency of 83.00 lp / mm (83.00 line pairs / mm), and the optical lens provided in Example 1 has a relatively high resolution. Example 2

[0124] 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.

[0125] 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.

[0126] The difference from Example 1 is that in this embodiment, the second lens L2 is a convex-convex lens with positive power, and its first side surface S3 is a convex surface, and its second side surface S4 is a convex surface. The third lens L3 is a convex-concave lens with negative power, and its first side surface S6 is a convex surface, and its second side surface S7 is a concave surface. In this embodiment, the first side surface S1 of the first lens L1 has an inflection point.

[0127] Table 3 shows the relevant parameters of the optical lens of Example 2. Table 4 shows 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.

[0128] Table 3

[0129]

[0130] Table 4

[0131]

[0132] Fig.16 The MTF diagram of the optical lens according to Example 2 of the present application is shown. Fig.16 It can be seen that the MTF peak value of the central field of view of the optical lens of this embodiment can reach 0.85 at a spatial frequency of 83.00 lp / mm (83.00 line pairs / mm), and the optical lens provided in this embodiment has a relatively high resolution. Example 3

[0133] Figure 3 A schematic structural diagram of an optical lens according to Example 3 of the present application is shown.

[0134] The difference from Example 1 is that in this embodiment, the second lens L2 is a convex-convex lens with positive power, and its first side surface S3 is a convex surface, and its second side surface S4 is a convex surface. The third lens L3 is a concave-concave lens with negative power, and its first side surface S6 is a concave surface, and its second side surface S7 is a concave surface. In this embodiment, the first side surface S1 of the first lens L1 has an inflection point.

[0135] Table 5 shows the relevant parameters of the optical lens of Example 3. Table 6 shows the cone coefficients and high-order coefficients that can be used for each aspherical mirror surface S1-S2 in this embodiment.

[0136] Table 5

[0137]

[0138] Table 6

[0139]

[0140] Fig.17 The MTF diagram of the optical lens according to Example 3 of the present application is shown. Fig.17 It can be seen that the MTF peak value of the central field of view of the optical lens of this embodiment can reach above 0.8 at a spatial frequency of 83.00 lp / mm (83.00 line pairs / mm), and the optical lens provided in this embodiment has a relatively high resolution. Example 4

[0141] Figure 4 A schematic structural diagram of an optical lens according to Example 4 of the present application is shown.

[0142] The difference from Example 1 is that in this embodiment, the second lens L2 is a convex-convex lens with positive power, the first side surface S3 thereof is a convex surface, and the second side surface S4 thereof is a convex surface. In this embodiment, the first side surface S1 of the first lens L1 has an inflection point.

[0143] Table 7 shows the relevant parameters of the optical lens of Example 4. Table 8 shows the cone coefficients and high-order coefficients that can be used for each aspherical mirror surface S1-S2 in this embodiment.

[0144] Table 7

[0145]

[0146] Table 8

[0147]

[0148] Fig.18 The MTF diagram of the optical lens according to Example 4 of the present application is shown. Fig.18 It can be seen that the MTF peak value of the central field of view of the optical lens of this embodiment can reach above 0.8 at a spatial frequency of 83.00 lp / mm (83.00 line pairs / mm), and the optical lens provided in this embodiment has a relatively high resolution. Example 5

[0149] Figure 5 A schematic structural diagram of an optical lens according to Example 5 of the present application is shown.

[0150] The difference from Example 1 is that in this embodiment, the second lens L2 is a meniscus lens with positive refractive power, the first side surface S3 thereof is a concave surface, and the second side surface S4 is a convex surface. In this embodiment, the first side surface S1 of the first lens L1 has an inflection point.

[0151] Table 9 shows the relevant parameters of the optical lens of Example 5. Table 10 shows the cone coefficients and high-order coefficients that can be used for each aspherical mirror surface S1-S2 in this embodiment.

[0152] Table 9

[0153]

[0154] Table 10

[0155]

[0156] Fig.19 The MTF diagram of the optical lens according to Example 5 of the present application is shown. Fig.19 It can be seen that the MTF peak value of the central field of view of the optical lens of this embodiment can reach above 0.8 at a spatial frequency of 83.00 lp / mm (83.00 line pairs / mm), and the optical lens provided in this embodiment has a relatively high resolution. Example 6

[0157] Figure 6A schematic structural diagram of an optical lens according to Example 6 of the present application is shown.

[0158] The difference from Example 1 is that in this embodiment, the second lens L2 is a convex-concave lens with positive power, the first side surface S3 thereof is a convex surface, and the second side surface S4 is a concave surface. In this embodiment, the first side surface S1 of the first lens L1 has an inflection point.

[0159] Table 11 shows the relevant parameters of the optical lens of Example 6. Table 12 shows the cone coefficients and high-order coefficients that can be used for each aspherical mirror surface S1-S2 in this embodiment.

[0160] Table 11

[0161]

[0162] Table 12

[0163]

[0164] Fig. 20 The MTF diagram of the optical lens according to Example 6 of the present application is shown. Fig. 20 It can be seen that the MTF peak value of the central field of view of the optical lens of this embodiment can reach above 0.8 at a spatial frequency of 83.00 lp / mm (83.00 line pairs / mm), and the optical lens provided in this embodiment has a relatively high resolution. Example 7

[0165] Figure 7 A schematic structural diagram of an optical lens according to Example 7 of the present application is shown.

[0166] The difference from Example 1 is that in this embodiment, the second lens L2 is a convex-convex lens with positive power, and its first side surface S3 is a convex surface, and its second side surface S4 is a convex surface. The third lens L3 is a convex-concave lens with positive power, and its first side surface S6 is a convex surface, and its second side surface S7 is a concave surface. In this embodiment, the first side surface S1 of the first lens L1 has an inflection point.

[0167] Table 13 shows the relevant parameters of the optical lens of Example 7. Table 14 shows the cone coefficients and high-order coefficients that can be used for each aspherical mirror surface S1-S2 in this embodiment.

[0168] Table 13

[0169]

[0170] Table 14

[0171]

[0172] Fig.21The MTF diagram of the optical lens according to Example 7 of the present application is shown. Fig.21 It can be seen that the MTF peak value of the central field of view of the optical lens of this embodiment can reach above 0.8 at a spatial frequency of 83.00 lp / mm (83.00 line pairs / mm), and the optical lens provided in this embodiment has a relatively high resolution. Example 8

[0173] Figure 8 A schematic structural diagram of an optical lens according to Example 8 of the present application is shown.

[0174] The difference from Example 1 is that in this embodiment, the second lens L2 is a meniscus lens with positive power, the first side surface S3 of which is a concave surface, and the second side surface S4 is a convex surface. The fifth lens L5 is a meniscus lens with negative power, the first side surface S9 of which is a concave surface, and the second side surface S10 is a concave surface. In this embodiment, the first side surface S1 of the first lens L1 has an inflection point.

[0175] Table 15 shows the relevant parameters of the optical lens of Example 8. Table 16 shows the cone coefficients and high-order coefficients that can be used for each aspherical mirror surface S1-S2 in this embodiment.

[0176] Table 15

[0177]

[0178] Table 16

[0179]

[0180] Fig. 22 The MTF diagram of the optical lens according to Example 8 of the present application is shown. Fig. 22 It can be seen that the MTF peak value of the central field of view of the optical lens of this embodiment can reach 0.8 at a spatial frequency of 83.00 lp / mm (83.00 line pairs / mm), and the optical lens provided in this embodiment has a relatively high resolution. Example 9

[0181] Fig. 9 A schematic structural diagram of an optical lens according to Example 9 of the present application is shown.

[0182] The difference from Example 1 is that in this embodiment, the second lens L2 is a convex-convex lens with positive power, the first side surface S3 of which is a convex surface, and the second side surface S4 is a convex surface. The fourth lens L4 is a meniscus lens with positive power, the first side surface S8 of which is a concave surface, and the second side surface S9 of which is a convex surface.

[0183] Table 17 shows the relevant parameters of the optical lens of Example 9. Table 18 shows the cone coefficients and high-order coefficients that can be used for each aspherical mirror surface S1-S2 in this embodiment.

[0184] Table 17

[0185]

[0186] Table 18

[0187]

[0188] Fig.23 The MTF diagram of the optical lens according to Example 9 of the present application is shown. Fig.23 It can be seen that the MTF peak value of the central field of view of the optical lens of this embodiment can reach above 0.8 at a spatial frequency of 83.00 lp / mm (83.00 line pairs / mm), and the optical lens provided in this embodiment has a relatively high resolution. Example 10

[0189] Fig.10 A schematic structural diagram of an optical lens according to Example 10 of the present application is shown.

[0190] The difference from Example 1 is that in this embodiment, the fourth lens L4 is a convex-concave lens with negative optical power, and its first side surface S8 is a convex surface, and its second side surface S9 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. In this embodiment, the first side surface S1 of the first lens L1 has an inflection point.

[0191] Table 19 shows the relevant parameters of the optical lens of Example 10. Table 20 shows the cone coefficients and high-order coefficients that can be used for each aspherical mirror surface S1-S2 in this embodiment.

[0192] Table 19

[0193]

[0194] Table 20

[0195]

[0196] Fig.24 The MTF diagram of the optical lens according to Example 10 of the present application is shown. Fig.24 It can be seen that the MTF peak value of the central field of view of the optical lens of this embodiment can reach above 0.8 at a spatial frequency of 83.00 lp / mm (83.00 line pairs / mm), and the optical lens provided in this embodiment has a relatively high resolution. Embodiment 11

[0197] Fig.11 A schematic structural diagram of an optical lens according to Example 11 of the present application is shown.

[0198] The difference from Example 1 is that in this embodiment, the second lens L2 is a concave-concave lens with negative power, and its first side surface S3 is a concave surface, and its second side surface S4 is a concave surface. The fourth lens L4 is a convex-concave lens with negative power, and its first side surface S8 is a convex surface, and its second side surface S9 is a concave surface. The fifth lens L5 is a convex-convex lens with positive power, and its first side surface S9 is a convex surface, and its second side surface S10 is a convex surface.

[0199] Table 21 shows the relevant parameters of the optical lens of Example 11. Table 22 shows the cone coefficients and high-order coefficients that can be used for each aspherical mirror surface S1-S2 in this embodiment.

[0200] Table 21

[0201]

[0202] Table 22

[0203]

[0204] Fig.25 The MTF diagram of the optical lens according to Example 11 of the present application is shown. Fig.25 It can be seen that the MTF peak value of the central field of view of the optical lens of this embodiment can reach above 0.8 at a spatial frequency of 83.00 lp / mm (83.00 line pairs / mm), and the optical lens provided in this embodiment has a relatively high resolution. Example 12

[0205] Fig.12 A schematic structural diagram of an optical lens according to Example 12 of the present application is shown.

[0206] The difference from Example 1 is that, in this embodiment, the second lens L2 is a convex-convex lens with positive focal power, and its first side surface S3 is a convex surface, and its second side surface S4 is a convex surface. The third lens L3 is a convex-concave lens with negative focal power, and its first side surface S6 is a convex surface, and its second side surface S7 is a concave surface. The fourth lens L4 is a convex-concave lens with negative focal power, and its first side surface S8 is a convex surface, and its second side surface S9 is a concave surface. The fifth lens L5 is a convex-convex lens with positive focal power, and its first side surface S9 is a convex surface, and its second side surface S10 is a convex surface. In this embodiment, the first side surface S1 of the first lens L1 has an inflection point.

[0207] Table 23 shows the relevant parameters of the optical lens of Example 12. Table 24 shows the cone coefficients and high-order coefficients that can be used for each aspherical mirror surface S1-S2 in this embodiment.

[0208] Table 23

[0209]

[0210] Table 24

[0211]

[0212] Fig.26 The MTF diagram of the optical lens according to Example 12 of the present application is shown. Fig.26 It can be seen that the MTF peak value of the central field of view of the optical lens of this embodiment can reach above 0.8 at a spatial frequency of 83.00 lp / mm (83.00 line pairs / mm), and the optical lens provided in this embodiment has a relatively high resolution. Embodiment 13

[0213] Fig.13 A schematic structural diagram of an optical lens according to Example 13 of the present application is shown.

[0214] The difference from Example 1 is that in this embodiment, the second lens L2 is a convex-concave lens with positive focal power, the first side surface S3 of which is convex, and the second side surface S4 is concave. The fourth lens L4 is a convex-concave lens with negative focal power, the first side surface S8 of which is convex, and the second side surface S9 is concave. The fifth lens L5 is a convex-convex lens with positive focal power, the first side surface S9 of which is convex, and the second side surface S10 is convex. In this embodiment, the first side surface S1 of the first lens L1 has an inflection point.

[0215] Table 25 shows the relevant parameters of the optical lens of Example 13. Table 26 shows the cone coefficients and high-order coefficients that can be used for each aspherical mirror surface S1-S2 in this embodiment.

[0216] Table 25

[0217]

[0218] Table 26

[0219]

[0220] Fig. 27 The MTF diagram of the optical lens according to Example 13 of the present application is shown. Fig. 27 It can be seen that the MTF peak value of the central field of view of the optical lens of this embodiment can reach 0.78 at a spatial frequency of 83.00 lp / mm (83.00 line pairs / mm), and the optical lens provided in this embodiment has a relatively high resolution.

[0221] In summary, the parameter values ​​in Examples 1 to 13 are respectively shown in Tables 27 and 28, wherein the units of F, ENPD, TTL, H, D, BFL, F1-F5, F45, SAG11, and ED1 are all millimeters (mm), the unit of FOV is degrees (°), and the units of θ, θ1, and arctan(1 / K(S1)) are radians.

[0222] Table 27

[0223]

[0224] Table 28

[0225]

[0226] Furthermore, Examples 1 to 13 satisfy the relationships shown in Tables 29 and 30 below, respectively.

[0227] Table 29

[0228]

[0229] Table 30

[0230]

[0231] 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.

[0232] 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 comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens having optical power in sequence from the first side to the second side along the optical axis; The first lens has negative optical power, a first side surface is convex, and a second side surface is concave; At least one of the second lens and the third lens has positive refractive power; The fourth lens is cemented with the fifth lens, and the fourth lens and the fifth lens have opposite positive and negative optical power properties; The number of lenses having optical power in the optical lens is five; And, the optical lens meets the following requirements: 0.85≤ F2 / F ; 0.5≤R11 / SAG11≤3.6; 0.45≤d1 / ED1≤0.9; 80°≤(FOV×F) / H≤100°; 0.5≤F45 / F≤8; and 2.85≤TTL / F≤5.6; Among them, F2 is the effective focal length of the second lens, F is the total effective focal length 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, is the distance from the intersection of the first side surface of the first lens and the optical axis to the vertex of the maximum effective light-clearance aperture of the first side surface of the first lens on the optical axis, d1 is the center thickness of the first lens on the optical axis, ED1 is the edge thickness of the first lens, FOV is 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, F45 is the combined focal length of the fourth lens and the fifth lens, 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.

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

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

4. The optical lens according to claim 1, characterized in that: The third lens has positive optical power, a first side surface of the third lens is a convex surface, and a second side surface is a concave surface or a convex surface.

5. The optical lens according to claim 1, characterized in that: The third lens has negative optical power, a first side surface of the third lens is a convex surface or a concave surface, and a second side surface is a concave surface.

6. The optical lens according to claim 1, characterized in that: The fourth lens has positive power, and its first side surface is convex, and its second side surface is convex; the fifth lens has negative power, and its first side surface is concave, and its second side surface is convex; or, The fourth lens has positive power, and its first side surface is convex, and its second side surface is convex; the fifth lens has negative power, and its first side surface is concave, and its second side surface is concave; or, The fourth lens has positive optical power, a first side surface thereof is concave, and a second side surface thereof is convex; the fifth lens has negative optical power, a first side surface thereof is concave, and a second side surface thereof is convex.

7. The optical lens according to claim 1, characterized in that: The fourth lens has negative optical power, a first side surface thereof is convex, and a second side surface thereof is concave; the fifth lens has positive optical power, a first side surface thereof is convex, and a second side surface thereof is convex.

8. The optical lens according to any one of claims 1 to 7, 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: 0.25≤R11 / F≤1.

2.

9. The optical lens according to any one of claims 1 to 7, 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: 0.35≤(H / 2) / (F×tan(θ / 2))≤0.

45.

10. The optical lens according to any one of claims 1 to 7, characterized in that: A curvature radius R11 of the first side surface of the first lens and a curvature radius R12 of the second side surface of the first lens satisfy: 1.2≤R11 / R12≤2.

8.

11. The optical lens according to any one of claims 1 to 7, characterized in that: A curvature radius R42 of the second side surface of the fourth lens and a curvature radius R51 of the first side surface of the fifth lens satisfy: 0.9≤R42 / R51≤1.

1.

12. The optical lens according to any one of claims 1 to 7, characterized in that: The center thickness d4 of the fourth lens on the optical axis, the center thickness d5 of the fifth lens on the optical axis, and the distance TTL from the center of the first side surface of the first lens to the imaging surface of the optical lens on the optical axis satisfy: 0.1≤(d4+d5) / TTL≤0.

4.

13. The optical lens according to any one of claims 1 to 7, characterized in that: The effective focal length F3 of the third lens, the combined focal length F45 of the fourth lens and the fifth lens, and the total effective focal length F of the optical lens satisfy: 0.1≤(1 / F3+1 / F45) / (1 / F)≤2.

14. The optical lens according to any one of claims 1 to 7, characterized in that: The center thickness d2 of the second lens on the optical axis and the distance TTL from the center of the first side surface of the first lens to the imaging surface of the optical lens on the optical axis satisfy: 0.12≤d2 / TTL≤0.

28.

15. The optical lens according to any one of claims 1 to 7, characterized in that: The center thickness d3 of the third lens on the optical axis and the distance TTL from the center of the first side surface of the first lens to the imaging surface of the optical lens on the optical axis satisfy: 0.01≤d3 / TTL≤0.

165.

16. The optical lens according to any one of claims 1 to 7, characterized in that: An air gap d23 between the second lens and the third lens on the optical axis and a distance TTL from the center of the first side surface of the first lens to the imaging surface of the optical lens on the optical axis satisfy: d23 / TTL≤0.

24.

17. The optical lens according to any one of claims 1 to 7, characterized in that: The effective focal length F5 of the fifth lens and the total effective focal length F of the optical lens satisfy: F5 / F ≤6.

18. The optical lens according to any one of claims 1 to 7, characterized in that: A distance BFL from the second side surface of the fifth lens to the imaging surface of the optical lens on the optical axis and a distance TTL from the center of the first side surface of the first lens to the imaging surface of the optical lens on the optical axis satisfy: 0.1≤BFL / TTL≤0.

24.

19. The optical lens according to any one of claims 1 to 7, characterized in that: The effective focal length F2 of the second lens and the total effective focal length F of the optical lens satisfy: 0.95≤ F2 / F ≤1.8; The total effective focal length F of the optical lens and the effective focal length F3 of the third lens satisfy: -0.3≤F / F3≤-0.

015.

20. The optical lens according to claim 19, characterized in that: The optical lens meets the following requirements: 1.3148≤ F2 / F ≤1.7922 and -0.2472≤F / F3≤-0.

043.

21. The optical lens according to any one of claims 1 to 7, characterized in that: The effective focal length F2 of the second lens and the total effective focal length F of the optical lens satisfy: 2.4≤ F2 / F ≤150; The total effective focal length F of the optical lens and the effective focal length F3 of the third lens satisfy: 0.15≤F / F3≤1.

22. The optical lens according to claim 21, characterized in that: The optical lens meets the following requirements: 2.4022≤ F2 / F ≤116.4137 and 0.3623≤F / F3≤0.8648.

23. The optical lens according to any one of claims 1 to 7, characterized in that: The optical lens meets at least one of the following conditions: -5≤F1 / F≤-0.8;0.1≤arctan(SAG11 / (D / 2))≤0.65; arctan(1 / K(S1)) / θ1 ≤2.5;0.3≤ (HF×θ) / (F×θ) ≤0.4; <h2 style=";text-align:left;direction:ltr">0.1≤R12 / F≤0.6;d45 / TTL≤0.01;TTL / H / FOV≤0.05;0.5≤(F×θ) / D≤1.65;0.35≤D / H / θ≤1.2;0.2≤D / H / F≤0.6;1.4≤F / ENPD≤1.8;-8≤F4 / F5≤-0.05;0.1≤d12 / TTL≤0.3;0<<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr"> 1 / F2<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr"> / (1 / F3+1 / F45)≤3.5; Wherein, F1 is the effective focal length 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 angle of the optical lens, arctan(1 / K(S1)) is the opening angle of the first side surface of the first lens, θ1 is the opening angle on the first side surface of the first lens at a distance of one quarter of the aperture from the center of the lens, θ is the radian value of the maximum field of view angle of the optical lens, R12 is the radius of curvature of the second side surface of the first lens, d45 is the air gap between the fourth lens and the fifth 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, ENPD is the entrance pupil diameter of the optical lens, F4 is the effective focal length of the fourth lens, F5 is the effective focal length of the fifth lens, d12 is the air gap between the first lens and the second lens on the optical axis, and F3 is the effective focal length of the third lens.

24. The optical lens according to any one of claims 1 to 7, characterized in that: The optical lens meets at least one of the following conditions: 1.1≤ F2 / F ≤195;0.8≤R11 / SAG11≤3;0.55≤d1 / ED1≤0.8;87°≤(FOV×F) / H≤92°;0.8≤F45 / F≤7.5;0.45≤R11 / F≤1.0;0.385≤(H / 2) / (F×tan(θ / 2))≤0.39;1.5≤R11 / R12≤2.5;0.95≤R42 / R51≤1.05;0.12≤(d4+d5) / TTL≤0.35;0.2≤(1 / F3+1 / F45) / (1 / F)≤1.8;0.15≤d2 / TTL≤0.2; 0.02≤d3 / TTL≤0.11;0.06≤d23 / TTL≤0.2;0.2≤ F5 / F ≤4.5;0.12≤BFL / TTL≤0.22;-3.5≤F1 / F≤-1.2;0.24≤arctan(SAG11 / (D / 2))≤0.5; arctan(1 / K(S1)) / θ1 ≤2;0.35≤ (H-F×θ) / (F×θ) ≤0.36;0.27≤R12 / F≤0.45;d45 / TTL≤0.005;0.02≤TTL / H / FOV≤0.036; 0.78≤(F×θ) / D≤1.4;0.475≤D / H / θ≤0.95;0.27≤D / H / F≤0.5;1.45≤F / ENPD≤1.78;-6.5≤F4 / F5≤-0.1;0.12≤d12 / TTL≤0.285;0.002≤ 1 / F2 / (1 / F3+1 / F45)≤2.2; Wherein, θ is the radian value of the maximum field angle of the optical lens, R12 is the curvature radius of the second side surface of the first lens, R42 is the curvature radius of the second side surface of the fourth lens, R51 is the curvature radius of the first side surface of the fifth lens, d4 is the center thickness of the fourth lens on the optical axis, d5 is the center thickness of the fifth 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, F3 is the effective focal length of the third 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, d23 is the air gap between the second lens and the third lens on the optical axis, and F5 is the distance between the second lens and the third lens on the optical axis. is the effective focal length of the fifth lens, BFL is the distance from the second side surface of the fifth lens to the imaging surface of the optical lens on the optical axis, F1 is the effective focal length of the first lens, D is the maximum effective aperture of the first side surface of the first lens corresponding to the maximum field angle of the optical lens, arctan(1 / K(S1)) is the aperture angle of the first side surface of the first lens, θ1 is the aperture angle of the first side surface of the first lens at a distance of one quarter of the aperture from the center of the lens, d45 is the air gap between the fourth lens and the fifth lens on the optical axis, ENPD is the entrance pupil diameter of the optical lens, F4 is the effective focal length of the fourth lens, and d12 is the air gap between the first lens and the second lens on the optical axis.

25. The optical lens according to any one of claims 1 to 7, characterized in that: The optical lens meets at least one of the following conditions: 1.3148≤ F2 / F ≤116.4137;1.2003≤R11 / SAG11≤2.5583;0.619≤d1 / ED1≤0.77;89.2171°≤(FOV×F) / H≤89.5099°;1.108≤F45 / F≤4.9587;0.5372≤R11 / F≤0.8903;0.387≤(H / 2) / (F×tan(θ / 2))≤0.3883;1.7761≤R11 / R12≤2.3588;0.98≤R42 / R51≤1.02;0.1425≤(d4+d5) / TTL≤0.288;0.3824≤(1 / F3+1 / F45) / (1 / F)≤1.365; 0.1915≤d2 / TTL≤0.1964;0.0329≤d3 / TTL≤0.1096;0.0606≤d23 / TTL≤0.1532;3.8122≤TTL / F≤5.4763;0.7381≤ F5 / F ≤3.3582; 0.1404≤BFL / TTL≤0.2021;-3.0135≤F1 / F≤-1.6621;0.2834≤arctan(SAG11 / (D / 2))≤0.4385;0.0088≤ arctan(1 / K(S1)) / θ1 ≤1.8432; 0.3578≤ (H-F×θ) / (F×θ) ≤0.3599;0.2943≤R12 / F≤0.3998;d45 / TTL≤0.003;0.0236≤TTL / H / FOV≤0.034;0.8293≤(F×θ) / D≤1.2145;0.6122≤D / H / θ≤0.8989;0.2994≤D / H / F≤0.4385;1.5≤F / ENPD≤1.7;-4.3823≤F4 / F5≤-0.3323;0.1223≤d12 / TTL≤0.2804;0.0063≤ 1 / F2 / (1 / F3+1 / F45)≤0.769; Wherein, θ is the radian value of the maximum field angle of the optical lens, R12 is the curvature radius of the second side surface of the first lens, R42 is the curvature radius of the second side surface of the fourth lens, R51 is the curvature radius of the first side surface of the fifth lens, d4 is the center thickness of the fourth lens on the optical axis, d5 is the center thickness of the fifth 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, F3 is the effective focal length of the third 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, d23 is the air gap between the second lens and the third lens on the optical axis, and F5 is the distance between the second lens and the third lens on the optical axis. is the effective focal length of the fifth lens, BFL is the distance from the second side surface of the fifth lens to the imaging surface of the optical lens on the optical axis, F1 is the effective focal length of the first lens, D is the maximum effective aperture of the first side surface of the first lens corresponding to the maximum field angle of the optical lens, arctan(1 / K(S1)) is the aperture angle of the first side surface of the first lens, θ1 is the aperture angle of the first side surface of the first lens at a distance of one quarter of the aperture from the center of the lens, d45 is the air gap between the fourth lens and the fifth lens on the optical axis, ENPD is the entrance pupil diameter of the optical lens, F4 is the effective focal length of the fourth lens, and d12 is the air gap between the first lens and the second lens on the optical axis.

26. An electronic device, characterized in that: comprising the optical lens according to any one of claims 1 to 25, 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.

Images