Optical Lens and Electronic Device

Abstract

The present application discloses an optical lens and an electronic device. The optical lens sequentially includes, along the optical axis, from the first side to the second side: a first lens with a negative optical power, at least one of its two side surfaces being concave; a second lens with a positive optical power, at least one of its two side surfaces being convex; a third lens with a positive optical power and a convex first side surface; a fourth lens with a positive optical power and a convex first side surface and a concave second side surface; and a fifth lens with an optical power and a convex first side surface and a concave second side surface; the number of lenses with optical power in the optical lens is five; the total effective focal length F of the optical lens and the effective focal lengths F2, F3, F4, and F5 of the second to fifth lenses satisfy: 0.4 ≤ F / F2 + F / F3 + F / F4 + F / F5 ≤ 1.2; the distance T12 between the first and second lenses on the optical axis and the distance TTL from the center of the first side surface of the first lens to the imaging surface on the optical axis satisfy: 0.09 ≤ T12 / TTL ≤ 0.4.

Description

Technical Field

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

[0002] In recent years, optical lens technology has been continuously developing and progressing, and optical lenses have been increasingly widely used in many fields including smart phones, security monitoring, automotive assisted driving, intelligent detection, and virtual reality. Among them, in the application in the automotive field, a lidar lens is a key component for an autonomous driving assistance system to obtain external information. With the rapid development of the autonomous driving assistance system, the demand for lidar lenses is also increasing, and lidar lenses are continuously developing in the direction of high resolution and miniaturization.

[0003] To meet the requirements of safe driving and the needs of special installation positions, compared with ordinary optical lenses, the lidar lens in an autonomous driving assistance system needs to meet more special requirements. For example, to achieve long-distance measurement, it is necessary to increase the light throughput of the receiving end lens module, and thus a larger light aperture and a small FNO are required. However, there are still many deficiencies in existing optical lenses that need to be improved. For example, existing optical lenses often have poor light passing ability, resulting in limited lidar detection distance; existing optical lenses usually cannot meet the requirements of a small aperture under the condition of a small FNO at the same time; in addition, existing optical lenses usually also have difficulty in meeting the requirements of high resolution under the condition of a small FNO at the same time. Therefore, an optical lens having some or all of the performances such as high resolution, miniaturization, small FNO, and short back focal length is the research and design direction of those skilled in the art at present. Summary of the Invention

[0004] The present application provides an optical lens. Along the optical axis, the optical lens may sequentially include from the first side to the second side: a first lens with a negative optical power, at least one of the first side and the second side of which is a concave surface; a second lens with a positive optical power, at least one of the first side and the second side of which is a convex surface; a third lens with a positive optical power, the first side of which is a convex surface; a fourth lens with a positive optical power, the first side of which is a convex surface and the second side of which is a concave surface; and a fifth lens with an optical power, the first side of which is a convex surface and the second side of which is a concave surface. The number of lenses with optical power in the optical lens is five. The total effective focal length F of the optical lens and the effective focal lengths F2 of the second lens, F3 of the third lens, F4 of the fourth lens, and F5 of the fifth lens may satisfy: 0.4 ≤ F / F2 + F / F3 + F / F4 + F / F5 ≤ 1.2; the distance T12 on the optical axis from the second side of the first lens to the first side of the second lens and the distance TTL on the optical axis from the center of the first side of the first lens to the imaging surface of the optical lens may satisfy: 0.09 ≤ T12 / TTL ≤ 0.4.

[0005] In one embodiment, the first side and the second side of the first lens are concave and convex, or concave and concave, or convex and concave, or concave and flat, respectively. The first side and the second side of the second lens are concave and convex, or convex and concave, or convex and convex, respectively. The second side of the third lens is convex or concave. The fifth lens has a positive or negative optical power.

[0006] In one embodiment, the optical lens may satisfy at least one of the following conditions: 0.5 ≤ F / ENPD ≤ 1.2; 0.15 ≤ TTL / H / FOV ≤ 0.3; BFL / TTL ≤ 0.2; D / H / FOV ≤ 0.15; D / H / F ≤ 0.25; -0.1 ≤ (H / 2 - F×θ / 2) / (F×θ / 2) ≤ 0.05; 0.2 ≤ (F×θ) / D ≤ 0.5; (FOV×F) / H ≥ 50; 1.55 ≤ FOV / F ≤ 2.1; where F is the total effective focal length of the optical lens, ENPD is the entrance pupil diameter of the optical lens, TTL is the distance from the center of the first side of the first lens to the imaging plane of the optical lens on the optical axis, FOV is the maximum field of view angle of the optical lens, H is the image height corresponding to the maximum field of view angle of the optical lens, BFL is the distance from the center of the second side of the fifth lens to the imaging plane on the optical axis, D is the maximum effective clear aperture of the first side of the first lens corresponding to the maximum field of view angle of the optical lens, and θ is the radian value of the maximum field of view angle of the optical lens.

[0007] In one embodiment, the optical lens may satisfy at least one of the following conditions: -8 ≤ F1 / F ≤ -1; -8 ≤ |R1| / F1 ≤ -0.2; 1.2 ≤ D / D10 ≤ 3.5; 2 ≤ D / H ≤ 10; 1.2 ≤ |F1 / T12| ≤ 8; where F1 is the effective focal length of the first lens, F is the total effective focal length of the optical lens, R1 is the radius of curvature of the first side of the first lens, D is the maximum effective clear aperture of the first side of the first lens corresponding to the maximum field of view angle of the optical lens, D10 is the maximum effective clear aperture of the second side of the fifth lens, H is the image height corresponding to the maximum field of view angle of the optical lens, and T12 is the distance from the second side of the first lens to the first side of the second lens on the optical axis.

[0008] 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: 2.5 ≤ F2 / F ≤ 25.

[0009] In one embodiment, the optical lens may satisfy at least one of the following conditions: 1.5 ≤ F3 / F ≤ 12; 0.2 ≤ R5 / F3 ≤ 1.8; where F3 is the effective focal length of the third lens, F is the total effective focal length of the optical lens, and R5 is the radius of curvature of the first side surface of the third lens.

[0010] In one embodiment, the optical lens may satisfy at least one of the following conditions: 1 ≤ F4 / F ≤ 8.5; 0.2 ≤ R8 / TTL ≤ 4.5; 0.05 ≤ R7 / (CT4 + R8) ≤ 1; where F4 is the effective focal length of the fourth lens, F is the total effective focal length of the optical lens, R7 is the radius of curvature of the first side surface of the fourth lens, R8 is the radius of curvature of the second side surface of the fourth lens, CT4 is the central thickness of the fourth lens on the optical axis, and TTL is the distance from the center of the first side surface of the first lens to the imaging surface of the optical lens on the optical axis.

[0011] In one embodiment, the optical lens may satisfy at least one of the following conditions: 1.5 ≤ |F5| / F ≤ 12; 0.12 ≤ R10 / TTL ≤ 0.9; 3 ≤ D10×BFL / H ≤ 26; 0.3 ≤ R9 / (CT5 + R10) ≤ 7.5; where F5 is the effective focal length of the fifth lens, F is the total effective focal length of the optical lens, R9 is the radius of curvature of the first side surface of the fifth lens, R10 is the radius of curvature of the second side surface of the fifth lens, 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, D10 is the maximum effective aperture diameter of the second side surface of the fifth lens, BFL is the distance from the center of the second side surface of the fifth lens to the imaging surface on the optical axis, H is the image height corresponding to the maximum field of view angle of the optical lens, and CT5 is the central thickness of the fifth lens on the optical axis.

[0012] In one embodiment, the effective focal length F2 of the second lens, the effective focal length F3 of the third lens, the effective focal length F4 of the fourth lens and the total effective focal length F of the optical lens may satisfy: 3 ≤ (F2 + F3 + F4) / 3 / F ≤ 12.

[0013] In one embodiment, the optical lens may satisfy at least one of the following conditions: 0.45 ≤ φ25 / φ ≤ 0.99; 0.02 ≤ (T23 + T34 + T45) / TTL ≤ 0.55; where φ25 is the combined optical power value of the second lens, the third lens, the fourth lens and the fifth lens, φ is the total optical power value of the optical lens, T23 is the distance on the optical axis from the second side surface of the second lens to the first side surface of the third lens, T34 is the distance on the optical axis from the second side surface of the third lens to the first side surface of the fourth lens, and T45 is the distance on the optical axis from the second side surface of the fourth lens to the first side surface of the fifth lens.

[0014] In one embodiment, the optical lens may satisfy at least one of the following conditions: 0.03 ≤ R7 / R9 ≤ 2.5; 1 ≤ R8 / R10 ≤ 25; where R7 is the radius of curvature of the first side surface of the fourth lens, R9 is the radius of curvature of the first side surface of the fifth lens, R8 is the radius of curvature of the second side surface of the fourth lens, and R10 is the radius of curvature of the second side surface of the fifth lens.

[0015] In one embodiment, the distance T23 on the optical axis from the second side surface of the second lens to the first side surface of the third lens and the distance TTL on the optical axis from the center of the first side surface of the first lens to the imaging surface of the optical lens may satisfy: 0 ≤ T23 / TTL ≤ 0.15.

[0016] In one embodiment, the total effective focal length F of the optical lens and the image height H corresponding to the maximum field of view angle of the optical lens may satisfy: 1.5 ≤ F / H ≤ 2.2.

[0017] In one embodiment, the distance TTL on the optical axis from the center of the first side surface of the first lens to the imaging surface of the optical lens and the total effective focal length F of the optical lens may satisfy: 2.8 ≤ TTL / F ≤ 5.5.

[0018] In one embodiment, the optical lens may satisfy at least one of the following conditions: 0.5 ≤ F / F2 + F / F3 + F / F4 + F / F5 ≤ 1.13; 0.12 ≤ T12 / TTL ≤ 0.31; 0.7 ≤ F / ENPD ≤ 1.1; 0.18 ≤ TTL / H / FOV ≤ 0.27; 0.04 ≤ BFL / TTL ≤ 0.16; 0.07 ≤ D / H / FOV ≤ 0.12; 0.14 ≤ D / H / F ≤ 0.21; -0.05 ≤ (H / 2 - F×θ / 2) / (F×θ / 2) ≤ 0.025; 0.27 ≤ (F×θ) / D ≤ 0.42; 55 ≤ (FOV×F) / H ≤ 60; 1.7 ≤ FOV / F ≤ 1.9; -4.7 ≤ F1 / F ≤ -1.4; -7 ≤ |R1| / F1 ≤ -0.27; 1.6 ≤ D / D10 ≤ 3.1; 2.4 ≤ D / H ≤ 9.1; 1.6 ≤ |F1 / T12| ≤ 6; 3 ≤ F2 / F ≤ 21.5; 2.5 ≤ F3 / F ≤ 9; 0.23 ≤ R5 / F3 ≤ 1.4; 1.44 ≤ F4 / F ≤ 7.5; 0.25 ≤ R8 / TTL ≤ 3.8; 0.07 ≤ R7 / (CT4 + R8) ≤ 0.75; 2 ≤ |F5| / F ≤ 9; 0.15 ≤ R10 / TTL ≤ 0.5; 4.2 ≤ D10×BFL / H ≤ 23.5; 0.5 ≤ R9 / (CT5 + R10) ≤ 6.6; 3.6 ≤ (F2 + F3 + F4) / 3 / F ≤ 9; 0.6 ≤ φ25 / φ ≤ 0.96; 0.05 ≤ (T23 + T34 + T45) / TTL ≤ 0.44; 0.07 ≤ R7 / R9 ≤ 2; 1.3 ≤ R8 / R10 ≤ 19; 0.001 ≤ T23 / TTL ≤ 0.12; 1.7 ≤ F / H ≤ 1.89; 3.25 ≤ TTL / F ≤ 4.8; where the meanings of the parameters are the same as above.

[0019] On the other hand, this application provides an electronic device, which includes the optical lens provided by this application and an imaging element for converting the optical image or optical information formed by the optical lens into an electrical signal. 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, the electronic device includes the optical lens provided by this application and a light source. The light source is located on the second side of the optical lens, and the light emitted by the light source is projected onto the first side of the optical lens after passing through the optical lens to form an image or illuminate an area on the first side.

[0020] An optical lens according to an exemplary embodiment of the present application includes five lenses with optical powers, namely the first to fifth lenses arranged in sequence from the first side to the second side along the optical axis. Among them, the first lens has a negative optical power, and at least one of its first side and second side is a concave surface; the second lens has a positive optical power, and at least one of its first side and second side is a convex surface; the third lens has a positive optical power, and its first side is a convex surface; the fourth lens has a positive optical power, its first side is a convex surface, and its second side is a concave surface; the fifth lens has an optical power, its first side is a convex surface, and its second side is a concave surface; the total effective focal length F of the optical lens and the effective focal lengths F2, F3, F4, and F5 of the second to fifth lenses satisfy the conditional formula 0.4 ≤ F / F2 + F / F3 + F / F4 + F / F5 ≤ 1.2; the distance T12 on the optical axis from the second side of the first lens to the first side of the second lens and the distance TTL on the optical axis from the center of the first side of the first lens to the imaging surface of the optical lens satisfy the conditional formula 0.09 ≤ T12 / TTL ≤ 0.4. Through this setting of the lens, the focal length distribution of the second to fifth lenses is reasonably controlled, so that the light rays diverged by the first lens can be smoothly converged onto the imaging surface under the action of the second to fifth lenses, which can reduce the sensitivity of the lens and improve the resolution; the distance from the second side of the first lens to the first side of the second lens is reasonably controlled, which can appropriately diverge the light rays and make the light ray trend gentle, which is beneficial to improving the resolution and reducing the sensitivity of the first lens.

[0021] The optical lens according to an exemplary embodiment of the present application adopts a five-lens structure. By reasonably setting parameters such as the optical power, surface type, curvature radius, central thickness of the lens, and the air gap on the optical axis between the lenses, it is beneficial for the optical lens to have one or more beneficial effects such as high resolution, miniaturization, small FNO, and short back focus, so that the optical lens can better meet the high requirements of in-vehicle applications such as lidar lenses. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Combined with the accompanying drawings, through the following detailed description of the embodiments, other features, purposes, and advantages of the present application will become more obvious. In the drawings:

[0023] Figures 1 to 29 They are respectively schematic structural diagrams showing the optical lenses according to Embodiment 1 to Embodiment 29 of the present application;

[0024] Figure 30 、 Figure 31 and Figure 32 They are respectively an optical spot diagram, an MTF diagram, and a diffraction circle incident energy diagram showing the optical lens according to Embodiment 3 of the present application;

[0025] Figure 33 、 Figure 34 and Figure 35respectively show the spot diagram, MTF diagram, and diffraction circle energy input diagram of the optical lens according to Embodiment 10 of the present application;

[0026] Figure 36 , Figure 37 and Figure 38 respectively show the spot diagram, MTF diagram, and diffraction circle energy input diagram of the optical lens according to Embodiment 12 of the present application;

[0027] Figure 39 , Figure 40 and Figure 41 respectively show the spot diagram, MTF diagram, and diffraction circle energy input diagram of the optical lens according to Embodiment 14 of the present application;

[0028] Figure 42 , Figure 43 and Figure 44 respectively show the spot diagram, MTF diagram, and diffraction circle energy input diagram of the optical lens according to Embodiment 19 of the present application;

[0029] Figure 45 , Figure 46 and Figure 47 respectively show the spot diagram, MTF diagram, and diffraction circle energy input diagram of the optical lens according to Embodiment 23 of the present application. Detailed implementation manners

[0030] 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 the exemplary embodiments of the present application and do not limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0031] It should be noted that in this specification, the expressions such as the first, the second, and the third are only used to distinguish one feature from another feature and do not represent any limitation on the feature. Therefore, without departing from the teachings of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0032] In the drawings, for the sake of convenience of illustration, the thickness, size, and shape of the lens have been slightly exaggerated. 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 spherical or aspherical surfaces shown in the drawings. The drawings are only examples and are not drawn strictly to scale.

[0033] In this text, 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 object to be photographed is called the object side surface of the lens, and the surface of each lens closest to the imaging side is called the image side surface of the lens.

[0034] It should be understood that the optical lens provided in this application can be used for photography, projection, and lidar lenses. When the optical lens provided in this application is used for a camera lens or the receiving end lens of lidar, the camera lens can be, for example, a vehicle-mounted camera, an infrared camera, a drone camera, a night vision camera, a security surveillance camera, etc. In this text, the "first side" can refer to the object side, the "second side" can refer to the image side, and the light rays from the object side can form an image on the image side; when the optical lens provided in this application is used for a projection lens or the transmitting end lens of radar, the "first side" in this text can refer to the object side, the "second side" can refer to the light source side, and the light rays from the light source side pass through the optical lens and are projected onto the first side, and an image or an illuminated area is formed on the first side.

[0035] It should also be understood that the terms "comprise", "comprising", "have", "include", and / or "including", 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 their combinations. In addition, when an expression such as "at least one of..." appears after the list of listed features, it modifies the entire list of listed features, rather than an individual element in the list. In addition, when describing the embodiments of this application, the use of "may" means "one or more embodiments of this application". And the term "exemplary" is intended to refer to an example or illustration.

[0036] Unless otherwise defined, all terms (including technical and scientific terms) used in this text have the same meaning as commonly understood by those of ordinary skill in the art to which this application belongs. It should also be understood that terms (such as those defined in a common dictionary) should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and will not be interpreted in an idealized or overly formalized sense unless explicitly defined as such in this text.

[0037] It should be noted that, without conflict, the embodiments and features in the embodiments of this application can be combined with each other. The following will detail this application with reference to the drawings and in combination with the embodiments.

[0038] The features, principles, and other aspects of this application are described in detail below.

[0039] 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. These five lenses may be arranged in sequence along the optical axis from the first side to the second side.

[0040] 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. Correspondingly, the first side surface of each of 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.

[0041] 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 element (CMOS).

[0042] In an exemplary embodiment, as needed, 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. The filter may filter light rays having a specific wavelength, and the protective glass may prevent the elements on the second side of the optical lens (e.g., the chip) from being damaged.

[0043] In an exemplary embodiment, the first lens may have a negative optical power. The first lens may have a concave-convex surface type. The first lens has a negative optical power and has a diverging effect on the light rays passing through it. Under the condition of the same field of view angle, the light rays emerging from the image side surface of the first lens can enable the subsequent optical system to have a larger light receiving surface. The object side surface of the first lens is concave, which can make the collected light rays enter the rear optical system in a diverging form as much as possible, and at the same time effectively reduce the angle between the light rays incident on the edge field of view and the first side surface, improving the overall relative illuminance of the edge of the lens; the image side surface of the first lens is convex, which can make the light rays enter the rear optical system smoothly as much as possible, which is beneficial to the low sensitivity of the system and the small front aperture. In addition, the object side surface of the first lens is concave, which can also avoid contact and friction between the lens and other objects, which is beneficial to the protection of the lens and the film layer. In an exemplary embodiment, the first lens may also have a concave-planar type, with the first side surface being concave and the second side surface being planar.

[0044] In an exemplary embodiment, the first lens may have a negative optical power. The first lens may have a concave-concave surface type. The first lens is a negative optical power lens, and the lens shape is double concave, which is beneficial to collecting the light rays of the field of view, increasing the light flux, and diffusing the light rays to the rear.

[0045] In an exemplary embodiment, the first lens may have a negative optical focal length. The first lens may have a convex-concave surface. The first lens has a negative optical focal length and has the function of diverging light, and can disperse the central light and the edge light of each field of view. Under the same field of view angle, the light emitted from the image side of the first lens can enable the rear optical system to have a larger light receiving surface, so that the physical aperture of the aperture is expanded, and a larger amount of light is input, which is beneficial to increase the illumination of the picture. The object side of the first lens is designed to be a convex surface, which cooperates with the image side as a concave surface, so that the light emitted from the first lens is smoothly incident to the rear, which is beneficial to reduce sensitivity. In addition, the object side of the first lens is designed to be a convex surface, which can also be beneficial to the sliding of water droplets and the like in practical applications, reducing the impact on imaging.

[0046] In an exemplary embodiment, the second lens may have positive power. The second lens may have a concave-convex surface. The second lens has positive power, and the object side is concave, which is conducive to proper diffusion of light, better receiving the light diverging from the first lens, reducing the deflection of light, and the shape is a meniscus so that the light converges to the second lens to a certain extent. The second lens plays the role of receiving the front and rear optical systems in the entire system, so that the light entering the front optical system is deflected at a smaller angle, while better correcting the aberration, ensuring the low sensitivity of the system and improving the resolution.

[0047] In an exemplary embodiment, the second lens may have positive power. The second lens may have a convex-concave surface. The second lens has positive power, the object side surface is convex, and can collect as much light as possible to enter the rear optical system, and the image side surface is concave, which can make the light enter the rear optical system as smoothly as possible, which is beneficial to the low sensitivity of the system and the small front aperture.

[0048] In an exemplary embodiment, the second lens may have positive optical power. The second lens may have a convex-convex surface. The second lens has positive optical power, the object side surface is convex, and can collect as much light as possible to enter the rear optical system, and the image side surface is convex, which can quickly transition the light to the rear optical system and reduce the system aperture.

[0049] 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 surface is convex, which can collect as much light as possible to enter the rear optical system, and the image side surface is concave, which can make the light enter the rear optical system as smoothly as possible, which is beneficial to the low sensitivity of the system and the small front aperture.

[0050] In an exemplary embodiment, the third lens may have a positive optical power. The third lens may have a convex-convex surface type. Since the third lens has a positive optical power and the object side is convex, it can collect as much light as possible and enter the rear optical system. Since the image side is convex, it can quickly transition the light to the rear optical system and reduce the system aperture.

[0051] In an exemplary embodiment, the fourth lens may have a positive optical power. The fourth lens may have a convex-concave surface type. Since the fourth lens has a positive optical power and the object side is convex, it can collect as much light as possible and enter the rear optical system. Since the image side is concave, it can make the light enter the rear optical system as smoothly as possible, which is beneficial to the low sensitivity of the system and the small front aperture.

[0052] In an exemplary embodiment, the fifth lens may have a negative optical power. The fifth lens may have a convex-concave surface type. Since the fifth lens has a negative optical power and its shape is convex-concave, it can appropriately diverge the light. When paired with the positive optical power of the fourth lens, it is beneficial for the light to enter the rear optical system smoothly. The object side of the fifth lens is designed to be convex, so that the light converges quickly, minimizing the total length of the system as much as possible and achieving miniaturization. The image side of the fifth lens is designed to be concave, which is beneficial for the smooth trend of the light. At the same time, it is beneficial to adjust the optical path difference between the lights of different fields of view, which is beneficial to achieving small distortion and laying the foundation for the subsequent light to converge better to the image plane, achieving high resolution.

[0053] In an exemplary embodiment, the fifth lens may have a positive optical power. The fifth lens may have a convex-concave surface type. Since the fifth lens has a positive optical power and its shape is convex-concave, it can appropriately converge the light. When paired with the positive optical power of the fourth lens, it is beneficial for the light to enter the rear optical system smoothly. The object side of the fifth lens is designed to be convex, which can make the light converge quickly, minimizing the total length of the system as much as possible and achieving miniaturization. The image side of the fifth lens is designed to be concave, which can be beneficial for the smooth trend of the light. At the same time, it is beneficial to adjust the optical path difference between the lights of different fields of view, which is beneficial to achieving small distortion and laying the foundation for the subsequent light to converge better to the image plane, achieving high resolution.

[0054] In an exemplary embodiment, the optical lens may further include a diaphragm. The diaphragm can constrain the optical path and control the light intensity. The diaphragm can be set at an appropriate position of the optical lens. For example, the diaphragm can be located between the third lens and the fourth lens; or, for example, the diaphragm can also be located between the second lens and the third lens; or, for example, the diaphragm can also be located between the first lens and the second lens. Reasonably setting the position of the diaphragm can facilitate the effective and smooth transition of the light entering the optical system to the rear end of the 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 positions of the diaphragms disclosed here are only examples and not limitations; in alternative embodiments, the diaphragm can also be set at other positions according to actual needs.

[0055] In an exemplary embodiment, one or more aspherical lenses may be included in the first to fifth lenses. Aspherical mirror surfaces have different curvatures at different positions, which can adjust the light trend to converge to the image plane, have better curvature radius characteristics, can effectively correct aberrations and field curvatures, and improve the resolution of the optical system; can improve distortion aberrations and improve astigmatism aberrations, eliminate aberrations that occur during imaging as much as possible, and improve the imaging quality of the lens. For example, in some embodiments, the fifth lens may be an aspherical lens; in some embodiments, the first lens may also be an aspherical lens; in some embodiments, the fourth lens may also be an aspherical lens. The present application does not specifically limit the number of spherical lenses and aspherical lenses. When focusing on the resolution quality, the number of aspherical lenses may be increased. In particular, in order to improve the resolution quality of the optical system, the first to fifth lenses may all be aspherical lenses.

[0056] 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.

[0057] In an exemplary embodiment, the first side surface of the fifth lens may have an inflection point. By this arrangement, aberrations can be effectively corrected.

[0058] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.4 ≤ F / F2 + F / F3 + F / F4 + F / F5 ≤ 1.2, where F is the total effective focal length of the optical lens, F2 is the effective focal length of the second lens, F3 is the effective focal length of the third lens, F4 is the effective focal length of the fourth lens, and F5 is the effective focal length of the fifth lens. By controlling this conditional expression and reasonably managing the focal length distribution of the second to fifth lenses, the light rays diverged by the first lens can be smoothly converged onto the image plane under the action of the second to fifth lenses, which is beneficial to reducing the sensitivity of the lens and improving the resolution. More specifically, F, F2, F3, F4, and F5 may further satisfy: 0.5 ≤ F / F2 + F / F3 + F / F4 + F / F5 ≤ 1.13. By controlling the conditional expression within this range, the light rays diverged by the first lens can be more smoothly converged onto the image plane under the action of the second to fifth lenses, which can further reduce the sensitivity of the lens and improve the resolution.

[0059] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.09 ≤ T12 / TTL ≤ 0.4, where TTL is the distance from the center of the first side of the first lens to the imaging plane of the optical lens on the optical axis, and T12 is the distance from the second side of the first lens to the first side of the second lens on the optical axis. By controlling this conditional expression and reasonably managing the distance from the image side of the first lens to the object side of the second lens, the light rays can be appropriately diverged to make the light ray trend gentle, which is beneficial to improving the resolution and reducing the sensitivity of the first lens. More specifically, T12 and TTL may further satisfy: 0.12 ≤ T12 / TTL ≤ 0.31. By controlling the conditional expression within this range, the light rays can be appropriately diverged to make the light ray trend more gentle, which is further beneficial to improving the resolution and reducing the sensitivity of the first lens.

[0060] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.5 ≤ F / ENPD ≤ 1.2, where 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, it is beneficial to achieve a small FNO for the lens and increase the light input. More specifically, F and ENPD may further satisfy: 0.7 ≤ F / ENPD ≤ 1.1. By controlling the conditional expression within this range, it is more beneficial to achieve a small FNO for the lens and further increase the light input.

[0061] In an exemplary embodiment, the optical lens according to the present application can satisfy: 0.15 ≤ TTL / H / FOV ≤ 0.3, where 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, FOV is the maximum field of view angle of the optical lens, and H is the image height corresponding to the maximum field of view angle of the optical lens. By controlling this conditional expression, the relationship between the overall optical length, image height, and maximum field of view angle of the optical lens can be reasonably controlled, and miniaturization of the optical lens and a large image surface can be achieved. More specifically, TTL, H, and FOV can further satisfy: 0.18 ≤ TTL / H / FOV ≤ 0.27. By controlling the conditional expression within this range, it is more conducive to achieving miniaturization of the optical lens and a large image surface.

[0062] In an exemplary embodiment, the optical lens according to the present application can satisfy: BFL / TTL ≤ 0.2, where BFL is the distance from the center of the second side of the fifth lens to the imaging surface 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, a short back focal length of the lens can be achieved, and it is beneficial to realize miniaturization of the lens while ensuring the space for optical element installation and focusing. More specifically, BFL and TTL can further satisfy: 0.04 ≤ BFL / TTL ≤ 0.16. By controlling the conditional expression within this range, it is more conducive to achieving a short back focal length of the lens and further realizing miniaturization of the lens while ensuring the space for optical element installation and focusing.

[0063] In an exemplary embodiment, the optical lens according to the present application can satisfy: D / H / FOV ≤ 0.15, where FOV is the maximum field of view angle of the optical lens, D is the maximum effective aperture of the first side of the first lens corresponding to the maximum field of view angle of the optical lens, and H is the image height corresponding to the maximum field of view angle of the optical lens. By controlling this conditional expression, the relationship between the maximum aperture of the object side of the first lens, image height, and maximum field of view angle can be reasonably controlled, and miniaturization of the optical lens and a large image surface can be achieved. More specifically, D, H, and FOV can further satisfy: 0.07 ≤ D / H / FOV ≤ 0.12. By controlling the conditional expression within this range, it is more beneficial to achieve miniaturization of the optical lens and a large image surface.

[0064] In an exemplary embodiment, the optical lens according to the present application may satisfy: D / H / F ≤ 0.25, where D is the maximum effective clear aperture of the first side of the first lens corresponding to the maximum field of view angle of the optical lens, H is the image height corresponding to the maximum field of view angle of the optical lens, and F is the total effective focal length of the optical lens. By controlling this conditional expression, the relationship between the maximum clear aperture of the object side of the first lens, the image height, and the lens focal length can be reasonably controlled, enabling the lens to have the characteristics of long focal length, large image height, and miniaturization. More specifically, D, H, and F may further satisfy: 0.14 ≤ D / H / F ≤ 0.21. By controlling the conditional expression within this range, it is more conducive to achieving the characteristics of long focal length, large image height, and miniaturization of the lens.

[0065] In an exemplary embodiment, the optical lens according to the present application may satisfy: -0.1 ≤ (H / 2 - F×θ / 2) / (F×θ / 2) ≤ 0.05, where H is the image height corresponding to the maximum field of view 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 of view angle of the optical lens. By controlling this conditional expression, when the field of view angle is the same, the difference between the ideal image height and the actual image height of the lens is small, reducing lens distortion. More specifically, H, F, and θ may further satisfy: -0.05 ≤ (H / 2 - F×θ / 2) / (F×θ / 2) ≤ 0.025. By controlling the conditional expression within this range, lens distortion can be better reduced.

[0066] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.2 ≤ (F×θ) / D ≤ 0.5, where F is the total effective focal length of the optical lens, θ is the radian value of the maximum field of view angle of the optical lens, and D is the maximum effective clear aperture of the first side of the first lens corresponding to the maximum field of view angle of the optical lens. By controlling this conditional expression, the aperture at the front end of the lens can be made small, which is beneficial for reducing the volume of the lens. More specifically, F, θ, and D may further satisfy: 0.27 ≤ (F×θ) / D ≤ 0.42. By controlling the conditional expression within this range, a smaller aperture at the front end of the lens can be better achieved, which is more beneficial for reducing the volume of the lens.

[0067] In an exemplary embodiment, the optical lens according to the present application may satisfy: (FOV×F) / H ≥ 50, where FOV is the maximum field of view angle 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 angle of the optical lens. By controlling this conditional expression, the relationship between the field of view angle, the focal length, and the image height can be adjusted, which is beneficial for the lens to achieve long-distance detection and a suitable detection field of view. More specifically, FOV, F, and H may further satisfy: 55 ≤ (FOV×F) / H ≤ 60. By controlling the conditional expression within this range, it is even more beneficial for the lens to achieve long-distance detection and a suitable detection field of view.

[0068] In an exemplary embodiment, the optical lens according to the present application can satisfy: 1.55 ≤ FOV / F ≤ 2.1, where FOV is the maximum field of view angle of the optical lens and F is the total effective focal length of the optical lens. By controlling this conditional expression and reasonably managing the field of view angle and focal length value of the entire lens group, the lens can achieve the effect of long focal length for measuring long distances. More specifically, FOV and F can further satisfy: 1.7 ≤ FOV / F ≤ 1.9. By controlling the conditional expression within this range, the effect of the lens with long focal length for measuring long distances can be better achieved.

[0069] In an exemplary embodiment, the optical lens according to the present application can satisfy: -8 ≤ F1 / F ≤ -1, where F1 is the effective focal length of the first lens and F is the total effective focal length of the optical lens. By controlling this conditional expression and reasonably managing the focal length value of the first lens, the light can diverge smoothly after passing through the first lens, improving the resolution. More specifically, F1 and F can further satisfy: -4.7 ≤ F1 / F ≤ -1.4. By controlling the conditional expression within this range, the light can diverge more smoothly after passing through the first lens, which is more conducive to improving the resolution.

[0070] In an exemplary embodiment, the optical lens according to the present application can satisfy: -8 ≤ |R1| / F1 ≤ -0.2, where R1 is the radius of curvature of the first side surface of the first lens and F1 is the effective focal length of the first lens. By controlling this conditional expression and reasonably managing the radius of curvature of the object side surface of the first lens, when it is a convex surface, the rear optical system can have a larger light receiving surface, expanding the physical aperture of the diaphragm and achieving a larger light input amount, which is beneficial to increasing the picture illumination; when the object side surface of the first lens is a concave surface, it has the effect of diverging light, which can increase the incident angle of large-angle incident light, thereby increasing the deflection angle of the light in the lens and being beneficial to collecting light as much as possible and increasing the light input amount. More specifically, R1 and F1 can further satisfy: -7 ≤ |R1| / F1 ≤ -0.27. By controlling the conditional expression within this range, when the object side surface of the first lens is a convex surface, the rear optical system can further have a larger light receiving surface, expanding the physical aperture of the diaphragm and achieving a larger light input amount, which is further beneficial to increasing the picture illumination; when the object side surface of the first lens is a concave surface, it can further increase the incident angle of large-angle incident light, thereby increasing the deflection angle of the light in the lens, which is more beneficial to collecting light as much as possible and further increasing the light input amount.

[0071] In an exemplary embodiment, the optical lens according to the present application may satisfy: 1.2 ≤ D / D10 ≤ 3.5, where D is the maximum effective light transmission aperture of the first side of the first lens corresponding to the maximum field of view angle of the optical lens, and D10 is the maximum effective light transmission aperture of the second side of the fifth lens. By controlling this conditional expression, the effective aperture at the front end of the lens is close to the effective aperture at the rear end, which is beneficial to reducing the lens aperture and the lens volume. More specifically, D and D10 may further satisfy: 1.6 ≤ D / D10 ≤ 3.1. By controlling the conditional expression within this range, the effective aperture at the front end of the lens can be made closer to the effective aperture at the rear end, which is further beneficial to reducing the lens aperture and the lens volume.

[0072] In an exemplary embodiment, the optical lens according to the present application may satisfy: 2 ≤ D / H ≤ 10, where D is the maximum effective light transmission aperture of the first side of the first lens corresponding to the maximum field of view angle of the optical lens, and H is the image height corresponding to the maximum field of view angle of the optical lens. By controlling this conditional expression, under the condition of the same imaging surface and the same image height, the effective aperture at the front end of the lens can be made smaller, which is beneficial to reducing the lens volume. More specifically, D and H may further satisfy: 2.4 ≤ D / H ≤ 9.1. By controlling the conditional expression within this range, under the condition of the same imaging surface and the same image height, the effective aperture at the front end of the lens can be made smaller, which is further beneficial to reducing the lens volume.

[0073] In an exemplary embodiment, the optical lens according to the present application may satisfy: 1.2 ≤ |F1 / T12| ≤ 8, where F1 is the effective focal length of the first lens, and T12 is the distance on the optical axis from the second side of the first lens to the first side of the second lens. The first lens has a negative optical power. Reasonably controlling the air gap between the first lens and the second lens to be long enough can make the light path gentle, and the angle of the light incident on the second lens small enough, which is beneficial to improving the resolution and reducing the sensitivity of the first lens. More specifically, F1 and T12 may further satisfy: 1.6 ≤ |F1 / T12| ≤ 6. By controlling the conditional expression within this range, the light path can be made more gentle, and the angle of the light incident on the second lens small enough, which is further beneficial to improving the resolution and reducing the sensitivity of the first lens.

[0074] In an exemplary embodiment, the optical lens according to the present application can satisfy: 2.5 ≤ F2 / F ≤ 25, where 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 value of the second lens is reasonably controlled, so that the light rays diverged by the first lens can undergo a small convergence, enabling the light rays to converge smoothly after passing through the second lens, reducing the degree of light deflection, and improving the resolution. More specifically, F2 and F can further satisfy: 3 ≤ F2 / F ≤ 21.5. By controlling the conditional expression within this range, the light rays can converge more smoothly after passing through the second lens, which is more conducive to reducing the degree of light deflection and further improving the resolution.

[0075] In an exemplary embodiment, the optical lens according to the present application can satisfy: 1.5 ≤ F3 / F ≤ 12, where F3 is the effective focal length of the third lens and F is the total effective focal length of the optical lens. By controlling this conditional expression, the focal length value of the third lens is reasonably controlled, and the deflection angle of the light rays transmitted through the second lens is adjusted, so that the light rays can converge smoothly after passing through the third lens, reducing the degree of light deflection, and improving the resolution. More specifically, F3 and F can further satisfy: 2.5 ≤ F3 / F ≤ 9. By controlling the conditional expression within this range, the deflection angle of the light rays transmitted through the second lens is better adjusted, enabling the light rays to converge more smoothly after passing through the third lens, which is more conducive to reducing the degree of light deflection and further improving the resolution.

[0076] In an exemplary embodiment, the optical lens according to the present application can satisfy: 0.2 ≤ R5 / F3 ≤ 1.8, where R5 is the radius of curvature of the first side surface of the third lens and F3 is the effective focal length of the third lens. By controlling this conditional expression, the ratio of the radius of curvature of the object side surface of the third lens to the focal length value of the third lens is reasonably controlled, which can reduce the excessive deflection of the light rays by the third lens, enabling the light rays to converge smoothly after passing through the third lens. More specifically, R5 and F3 can further satisfy: 0.23 ≤ R5 / F3 ≤ 1.4. By controlling the conditional expression within this range, it is more conducive to reducing the excessive deflection of the light rays by the third lens, enabling the light rays to converge more smoothly after passing through the third lens.

[0077] In an exemplary embodiment, the optical lens according to the present application can satisfy: 1 ≤ F4 / F ≤ 8.5, where F4 is the effective focal length of the fourth lens and F is the total effective focal length of the optical lens. By controlling this conditional expression, the focal length value of the fourth lens is reasonably controlled, and the deflection angle of the light rays transmitted through the third lens is adjusted, so that the light rays can converge smoothly after passing through the fourth lens, reducing the degree of light deflection, and improving the resolution. More specifically, F4 and F can further satisfy: 1.44 ≤ F4 / F ≤ 7.5. By controlling the conditional expression within this range, the light rays can converge more smoothly after passing through the fourth lens, which is further conducive to reducing the degree of light deflection and further improving the resolution.

[0078] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.2 ≤ R8 / TTL ≤ 4.5, where R8 is the radius of curvature of the second side surface of the fourth 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. The image-side surface of the fourth lens is concave. By reasonably controlling its radius of curvature, the light can be properly diverged, which is beneficial to the smooth transition of the light to the subsequent optical system and is beneficial to improving the image quality. More specifically, R8 and TTL may further satisfy: 0.25 ≤ R8 / TTL ≤ 3.8. By controlling the conditional expression within this range, it is more beneficial to the smooth transition of the light to the subsequent optical system and further beneficial to improving the image quality.

[0079] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.05 ≤ R7 / (CT4 + R8) ≤ 1, where R7 is the radius of curvature of the first side surface of the fourth lens, CT4 is the central thickness of the fourth lens on the optical axis, and R8 is the radius of curvature of the second side surface of the fourth lens. Controlling the radius of curvature of the first side surface and the second side surface and the central thickness of the fourth lens helps to smooth the light path, correct aberrations, and improve the resolution. More specifically, R7, CT4, and R8 may further satisfy: 0.07 ≤ R7 / (CT4 + R8) ≤ 0.75. By controlling the conditional expression within this range, it is more beneficial to smooth the light path, further correct aberrations, and improve the resolution.

[0080] In an exemplary embodiment, the optical lens according to the present application may satisfy: 1.5 ≤ |F5| / F ≤ 12, where 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 and reasonably controlling the focal length value of the fifth lens, the light can be smoothly incident on the imaging surface after passing through the fifth lens, reducing the degree of light deflection and improving the resolution. More specifically, F5 and F may further satisfy: 2 ≤ |F5| / F ≤ 9. By controlling the conditional expression within this range, the light can be more smoothly incident on the imaging surface after passing through the fifth lens, which is more beneficial to reducing the degree of light deflection and further improving the resolution.

[0081] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.12 ≤ R10 / TTL ≤ 0.9, where R10 is the radius of curvature of the second side surface of 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. The image side surface of the fifth lens is concave. By reasonably controlling its radius of curvature, the light rays are appropriately diverged, which is beneficial to the smooth transition of the light rays to the rear optical system and improves the resolution. More specifically, R10 and TTL may further satisfy: 0.15 ≤ R10 / TTL ≤ 0.5. By controlling the conditional expression within this range, the light rays can be appropriately diverged, which is more beneficial to the smooth transition of the light rays to the rear optical system and further improves the resolution.

[0082] In an exemplary embodiment, the optical lens according to the present application may satisfy: 3 ≤ D10×BFL / H ≤ 26, where D10 is the maximum effective aperture of the second side surface of the fifth lens, BFL is the distance from the center of the second side surface of the fifth lens to the imaging surface on the optical axis, and H is the image height corresponding to the maximum field of view angle of the optical lens. By controlling this conditional expression, under the conditions of the same imaging surface and the same image height, the back focal length of the lens can be shortened, which is beneficial to reducing the size of the lens. More specifically, D10, BFL, and H may further satisfy: 4.2 ≤ D10×BFL / H ≤ 23.5. By controlling the conditional expression within this range, under the conditions of the same imaging surface and the same image height, the back focal length of the lens can be better shortened, which is further beneficial to reducing the size of the lens.

[0083] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.3 ≤ R9 / (CT5 + R10) ≤ 7.5, where R9 is the radius of curvature of the first side surface of the fifth lens, R10 is the radius of curvature of the second side surface of the fifth lens, and CT5 is the central thickness of the fifth lens on the optical axis. By controlling the radius of curvature and the central thickness of the first side surface and the second side surface of the fifth lens, the light rays are smoothly transitioned to the image surface, the aberration is corrected, and the resolution ability is improved. More specifically, R9, CT5, and R10 may further satisfy: 0.5 ≤ R9 / (CT5 + R10) ≤ 6.6. By controlling the conditional expression within this range, it is more beneficial to smoothly transition the light rays to the image surface, better correct the aberration, and improve the resolution ability.

[0084] In an exemplary embodiment, the optical lens according to the present application may satisfy: 3 ≤ (F2 + F3 + F4) / 3 / F ≤ 12, where F2 is the effective focal length of the second lens, F3 is the effective focal length of the third lens, F4 is the effective focal length of the fourth lens, and F is the total effective focal length of the optical lens. The second lens, the third lens, and the fourth lens all have positive optical powers. By reasonably controlling the focal length distribution of the three lenses to satisfy the conditional expression 3 ≤ (F2 + F3 + F4) / 3 / F ≤ 12, the average focal length value of the three lenses is made larger, so that the light rays diverged by the first lens can be smoothly converged onto the fifth lens under the action of the second, third, and fourth lenses, reducing the sensitivity of the lens and improving the resolution. More specifically, F2, F3, F4, and F may further satisfy: 3.6 ≤ (F2 + F3 + F4) / 3 / F ≤ 9. By controlling the conditional expression within this range, the light rays diverged by the first lens can be more smoothly converged onto the fifth lens under the action of the second, third, and fourth lenses, and the sensitivity of the lens can be further reduced and the resolution can be further improved.

[0085] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.45 ≤ φ25 / φ ≤ 0.99, where φ25 is the combined optical power value of the second lens, the third lens, the fourth lens, and the fifth lens, φ is the total optical power value of the optical lens, φ = 1 / F, and F is the total effective focal length of the optical lens. By controlling this conditional expression, the combined optical power of the second to fifth lenses is reasonably controlled, so that the light rays diverged by the first lens can be smoothly converged onto the image plane under the action of the second to fifth lenses, reducing the sensitivity of the lens and improving the resolution. More specifically, φ25 and φ may further satisfy: 0.6 ≤ φ25 / φ ≤ 0.96. By controlling the conditional expression within this range, the light rays diverged by the first lens can be more smoothly converged onto the image plane under the action of the second to fifth lenses, and the sensitivity of the lens can be further reduced and the resolution can be further improved.

[0086] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.02≤(T23+T34+T45) / TTL≤0.55, wherein T23 is the distance from the second side of the second lens to the first side of the third lens on the optical axis, T34 is the distance from the second side of the third lens to the first side of the fourth lens on the optical axis, T45 is the distance from the second side of the fourth lens to the first side of the fifth 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. The second, third, and fourth lenses all have positive focal power. By controlling this conditional expression and reasonably controlling the air spacing setting between the lenses, the light passing through the second to fourth lenses can gradually adjust the deflection angle to prevent excessive convergence of the light, so that the light diverged by the first lens can be smoothly converged to the fifth lens under the action of the second to fourth lenses. More specifically, T23, T34, T45 and TTL can further satisfy: 0.05≤(T23+T34+T45) / TTL≤0.44. By controlling the conditional expression within this range, the deflection angle of the light passing through the second to fourth lenses can be gradually adjusted to better prevent excessive convergence of the light, so that the light diverged through the first lens can be more smoothly converged onto the fifth lens under the action of the second to fourth lenses.

[0087] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.03≤R7 / R9≤2.5, wherein R7 is the radius of curvature of the first side of the fourth lens, and R9 is the radius of curvature of the first side of the fifth lens. The fourth lens has positive focal length, which can converge the light, and the object side of the fifth lens is convex, which can converge the light again. By controlling this conditional expression, the fourth and fifth lenses cooperate to smoothly deflect the light and incident on the image plane, thereby improving the resolution. More specifically, R7 and R9 may further satisfy: 0.07≤R7 / R9≤2. By controlling the conditional expression within this range, the light can be better deflected and incident on the image plane, thereby further improving the resolution.

[0088] In an exemplary embodiment, the optical lens according to the present application may satisfy: 1≤R8 / R10≤25, wherein R8 is the radius of curvature of the second side of the fourth lens, and R10 is the radius of curvature of the second side of the fifth lens. The fourth lens has a positive optical power, which can converge the light. The image side of the fifth lens is a concave surface, which receives the light converged from the fourth lens. By controlling this conditional expression, it is possible to prevent the light from being excessively deflected, and to make the light trend smoother, which is beneficial to improving the resolution while reducing the sensitivity of the lens. More specifically, R8 and R10 may further satisfy: 1.3≤R8 / R10≤19. By controlling the conditional expression within this range, it is possible to better prevent the light from being excessively deflected, and to make the light trend smoother, which is further beneficial to improving the resolution while further reducing the sensitivity of the lens.

[0089] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0 ≤ T23 / TTL ≤ 0.15, where T23 is the distance on the optical axis from the second side surface of the second lens to the first side surface of the third lens, and TTL is the distance on the optical axis from the center of the first side surface of the first lens to the imaging surface of the optical lens. By controlling this conditional expression, the distance between the image side surface of the second lens and the object side surface of the third lens can be reasonably controlled to be small, enabling the second lens to converge light better and preventing excessive light convergence, which is beneficial to the subsequent smooth adjustment of the light deflection angle by the third lens and conducive to improving the resolution. More specifically, T23 and TTL may further satisfy: 0.001 ≤ T23 / TTL ≤ 0.12. By controlling the conditional expression within this range, the resolution can be further improved.

[0090] In an exemplary embodiment, the optical lens according to the present application may satisfy: 1.5 ≤ F / H ≤ 2.2, where F is the total effective focal length of the optical lens and H is the image height corresponding to the maximum field of view angle of the optical lens. By controlling this conditional expression, the ratio of F to H can be reasonably controlled, enabling the optical lens to have a longer focal length and a larger image plane. More specifically, F and H may further satisfy: 1.7 ≤ F / H ≤ 1.89. By controlling the conditional expression within this range, it is more conducive to making the optical lens have a longer focal length and a larger image plane.

[0091] In an exemplary embodiment, the optical lens according to the present application may satisfy: 2.8 ≤ TTL / F ≤ 5.5, where TTL is the distance on the optical axis from the center of the first side surface of the first lens to the imaging surface of the optical lens, and F is the total effective focal length of the optical lens. By controlling this conditional expression, a longer focal length and miniaturization of the optical lens can be achieved. More specifically, TTL and F may further satisfy: 3.25 ≤ TTL / F ≤ 4.8. By controlling the conditional expression within this range, a longer focal length and miniaturization of the optical lens can be better achieved.

[0092] An optical lens according to an exemplary embodiment of the present application includes five lenses with optical powers, namely, the first to fifth lenses arranged in sequence from the first side to the second side along the optical axis. Among them, the first lens has a negative optical power, and at least one of its first side and second side is a concave surface; the second lens has a positive optical power, and at least one of its first side and second side is a convex surface; the third lens has a positive optical power, and its first side is a convex surface; the fourth lens has a positive optical power, its first side is a convex surface, and its second side is a concave surface; the fifth lens has an optical power, its first side is a convex surface, and its second side is a concave surface; the total effective focal length F of the optical lens and the effective focal lengths F2, F3, F4, and F5 of the second to fifth lenses satisfy the conditional expression 0.4 ≤ F / F2 + F / F3 + F / F4 + F / F5 ≤ 1.2; the distance T12 on the optical axis from the second side of the first lens to the first side of the second lens and the distance TTL on the optical axis from the center of the first side of the first lens to the imaging surface of the optical lens satisfy the conditional expression 0.09 ≤ T12 / TTL ≤ 0.4. Through such a setting of the lens, the focal length distribution of the second to fifth lenses is reasonably controlled, so that the light rays diverged by the first lens can be smoothly converged onto the image surface under the action of the second to fifth lenses, which can reduce the sensitivity of the lens and improve the resolution; by reasonably controlling the distance from the second side of the first lens to the first side of the second lens, the light rays can be appropriately diverged, making the light ray trend gentle, which is beneficial to improving the resolution and reducing the sensitivity of the first lens.

[0093] The optical lens according to an exemplary embodiment of the present application adopts a five-lens structure. By reasonably setting parameters such as the optical power, surface type, curvature radius, central thickness of the lens, and the air gap between the lenses on the optical axis, it is beneficial for the optical lens to have one or more beneficial effects such as high resolution, miniaturization, small FNO, and short back focal length, so that the optical lens can better meet the high requirements in vehicle-mounted applications such as lidar lenses.

[0094] However, those skilled in the art should understand 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 the five-lens example is described 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 specific embodiments of the optical lens applicable to the above embodiments with reference to the drawings. Embodiment 1

[0095] The following refers to Figure 1 Describe the optical lens according to Embodiment 1 of the present application. Figure 1 A schematic structural diagram of the optical lens according to Embodiment 1 of the present application is shown.

[0096] As Figure 1As shown, the optical lens sequentially includes a first lens L1, a second lens L2, a third lens L3, a stop STO, a fourth lens L4, and a fifth lens L5 along the optical axis from the first side to the second side, and further includes, for example, a filter L6, a protective glass L7, and an image plane IMA located on the second side of the fifth lens L5.

[0097] The first lens L1 is a meniscus lens with a negative focal power, its first side S1 is concave, and its second side S2 is convex. The second lens L2 is a meniscus lens with a positive focal power, its first side S3 is concave, and its second side S4 is convex. The third lens L3 is a convex-concave lens with a positive focal power, its first side S5 is convex, and its second side S6 is concave. The fourth lens L4 is a convex-concave lens with a positive focal power, its first side S7 is convex, and its second side S8 is concave. The fifth lens L5 is a convex-concave lens with a negative focal power, its first side S9 is convex, and its second side S10 is concave.

[0098] In this embodiment, the fifth lens L5 is an aspherical lens. The stop STO is located between the third lens L3 and the fourth lens L4.

[0099] In this embodiment, the filter L6 has, for example, a first side S11 and a second side S12; the protective glass L7 has, for example, a first side S13 and a second side S14.

[0100] When the optical lens is used for imaging, light from an object can sequentially pass through the surfaces S1 to S14 and finally form an image on the imaging plane; when the optical lens is used for projection, light from the light source side can sequentially pass through the surfaces S14 to S1 and finally be projected onto a target object (not shown).

[0101] Table 1 shows the radius of curvature R, thickness / distance, refractive index Nd, and Abbe number Vd of each lens of the optical lens in Embodiment 1. Among them, regarding "thickness / distance", it should be understood that the thickness / distance in the row where S1 is located is the central thickness of the first lens L1, the thickness / distance in the row where S2 is located is the air interval distance between the first lens L1 and the second lens L2, the thickness / distance in the row where S3 is located is the central thickness of the second lens L2, the thickness / distance in the row where S4 is located is the air interval distance between the second lens L2 and the third lens L3, and so on.

[0102] Table 1

[0103]

[0104] In this embodiment, the first side S9 and the second side S10 of the fifth lens L5 are aspherical surfaces, and the surface profile of the aspherical lens can be defined by, but not limited to, the following aspherical formula:

[0105] (1)

[0106] Where x is the sagitta, the distance from the vertex of the aspheric surface to the aspheric surface at a position with 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 radius of curvature R in Table 1 above); k is the conic coefficient; Ai is the correction coefficient of the i-th order of the aspheric surface. Table 2 below gives the conic coefficient k and the higher-order term coefficients A4, A6, A8, A10, A12, A14, and A16 for the aspheric mirrors S9 - S10 in Example 1.

[0107] Table 2

[0108]

[0109] The MTF (Modulation Transfer Function) describes the ability of an optical system to'restore' the object space in the image space. The abscissa of the MTF (Modulation Transfer Function) curve graph is the spatial frequency, and the unit of the spatial frequency is line pairs per millimeter (lp / mm). The ordinate Modulus of the OTF represents the OTF coefficient.

[0110] The spot diagram shows the light condensation state of light rays with different wavelengths on the imaging plane. Among them, RMS (Root Mean Square) is used to describe the size of the blur spot caused by the wavefront error or aberration in the optical system. The RMS radius is an important parameter for evaluating the imaging quality of an optical system. It is obtained by calculating the square root of the average of the sum of the squares of the coordinates of each point of the blur spot relative to the center point, thereby quantitatively reflecting the actual spot size of the system.

[0111] The encircled energy curve graph of the diffraction circle is used to describe the energy distribution of the light beam in a certain specific area after passing through the optical system, reflecting the concentration degree of the spot energy. Specifically, it refers to the ratio of the light intensity or energy contained within a certain radius range in the diffraction pattern of the light beam to the total intensity or total energy.

[0112] The MTF value of the optical lens of this embodiment exceeds 0.78 at a spatial frequency of 25 lp / mm (25 lines / mm); in terms of the RMS of the spot diagram, in the marginal field of view, the root mean square radius of the spot on the imaging plane is 6.4 μm; in terms of the encircled energy of the diffraction circle, within a circle with a diameter of 15 μm on the imaging plane, the proportion of the spot energy in the total light energy exceeds 97.3%. The optical lens given in this embodiment has a high resolving power. Example 2

[0113] Figure 2Shows a schematic structural diagram of an optical lens according to Embodiment 2 of the present application. In this embodiment and the following embodiments, for the sake of simplicity, some descriptions similar to those in Embodiment 1 will be omitted.

[0114] In this embodiment, the positive and negative attributes of the optical power and the surface type of each lens from the first lens L1 to the fifth lens L5 are the same as those in Embodiment 1.

[0115] Table 3 shows the relevant parameters of each lens of the optical lens in Embodiment 2. Table 4 shows the conic coefficients and high-order term coefficients of each aspherical mirror surface S9 - S10 that can be used in this embodiment. Among them, the aspherical surface type can be defined by formula (1) given in Embodiment 1 above.

[0116] Table 3

[0117]

[0118] Table 4

[0119]

[0120] The MTF value of the optical lens in this embodiment exceeds 0.5 at a spatial frequency of 50 lp / mm (50 lines / mm); in terms of the RMS of the point spread function diagram, at the edge field of view, the root mean square radius of the spot on the image plane is 5.2 μm; in terms of the energy entering the diffraction circle, within a circle with a diameter of 15 μm on the image plane, the proportion of the spot energy in the total light energy exceeds 98.3%. The optical lens given in this embodiment has a high resolution. Embodiment 3

[0121] Figure 3 Shows a schematic structural diagram of an optical lens according to Embodiment 3 of the present application.

[0122] The difference from Embodiment 1 is that in this embodiment, the second lens L2 is a convex-convex lens with positive optical power, its first side surface S3 is a convex surface, and its second side surface S4 is a convex surface.

[0123] Table 5 shows the relevant parameters of each lens of the optical lens in Embodiment 3. Table 6 shows the conic coefficients and high-order term coefficients of each aspherical mirror surface S9 - S10 that can be used in this embodiment.

[0124] Table 5

[0125]

[0126] Table 6

[0127]

[0128] The optical point spread function diagram, MTF diagram, and energy entering the diffraction circle diagram of the optical lens in this embodiment are respectively as Figure 30 ,Figure 31 and Figure 32 As shown. The MTF value of the optical lens of this embodiment exceeds 0.54 at a spatial frequency of 50 lp / mm (50 lines / mm); in terms of the RMS of the spot diagram, in the marginal field of view, the root mean square radius of the spot on the image plane is 5.4 μm; in terms of the energy entering the diffraction circle, within a circle with a diameter of 15 μm on the image plane, the proportion of the spot energy in the total light energy exceeds 97.5%. The optical lens given in this embodiment has a high resolving power. Embodiment 4

[0129] Figure 4 FIG. shows a schematic structural diagram of an optical lens according to Embodiment 4 of the present application.

[0130] The difference from Embodiment 1 is that in this embodiment, the second lens L2 is a convex-convex lens with a positive optical power, its first side S3 is a convex surface, and its second side S4 is a convex surface.

[0131] Table 7 shows the relevant parameters of each lens of the optical lens of Embodiment 4. Table 8 shows the conic coefficients and higher-order term coefficients of the aspherical mirror surfaces S9-S10 that can be used in this embodiment.

[0132] Table 7

[0133]

[0134] Table 8

[0135]

[0136] The MTF value of the optical lens of this embodiment exceeds 0.72 at a spatial frequency of 50 lp / mm (50 lines / mm); in terms of the RMS of the spot diagram, in the marginal field of view, the root mean square radius of the spot on the image plane is 3.7 μm; in terms of the energy entering the diffraction circle, within a circle with a diameter of 15 μm on the image plane, the proportion of the spot energy in the total light energy exceeds 98.3%. The optical lens given in this embodiment has a high resolving power. Embodiment 5

[0137] Figure 5 FIG. shows a schematic structural diagram of an optical lens according to Embodiment 5 of the present application.

[0138] The difference from Embodiment 1 is that in this embodiment, the second lens L2 is a convex-concave lens with a positive optical power, its first side S3 is a convex surface, and its second side S4 is a concave surface.

[0139] Table 9 shows the relevant parameters of each lens of the optical lens of Embodiment 5. Table 10 shows the conic coefficients and higher-order term coefficients of the aspherical mirror surfaces S9-S10 that can be used in this embodiment.

[0140] Table 9

[0141]

[0142] Table 10

[0143]

[0144] The MTF value of the optical lens of this embodiment exceeds 0.79 at a spatial frequency of 25 lp / mm (25 lines / mm); in terms of the RMS of the spot diagram, at the edge field of view, the root mean square radius of the spot on the image plane is 6.3 μm; in terms of the energy entering the diffraction circle, within a circle with a diameter of 15 μm on the image plane, the proportion of the spot energy in the total light energy exceeds 97.5%. The optical lens given in this embodiment has a high resolution. Embodiment 6

[0145] Figure 6 Fig. shows a schematic structural diagram of an optical lens according to Embodiment 6 of the present application.

[0146] The difference from Embodiment 1 is that in this embodiment, the second lens L2 is a convex-concave lens with a positive optical power, its first side S3 is a convex surface, and its second side S4 is a concave surface.

[0147] Table 11 shows the relevant parameters of each lens of the optical lens of Embodiment 6. Table 12 shows the conic coefficients and higher-order term coefficients of the aspherical mirror surfaces S9-S10 that can be used in this embodiment.

[0148] Table 11

[0149]

[0150] Table 12

[0151]

[0152] The MTF value of the optical lens of this embodiment exceeds 0.66 at a spatial frequency of 50 lp / mm (50 lines / mm); in terms of the RMS of the spot diagram, at the edge field of view, the root mean square radius of the spot on the image plane is 4.4 μm; in terms of the energy entering the diffraction circle, within a circle with a diameter of 15 μm on the image plane, the proportion of the spot energy in the total light energy exceeds 98.3%. The optical lens given in this embodiment has a high resolution. Embodiment 7

[0153] Figure 7 Fig. shows a schematic structural diagram of an optical lens according to Embodiment 7 of the present application.

[0154] In this embodiment, the positive and negative attributes of the optical power and the surface types of each of the first lens L1 to the fifth lens L5 are the same as those in Embodiment 1.

[0155] Table 13 shows the relevant parameters of each lens of the optical lens of Example 7. Table 14 shows the conic coefficients and higher-order term coefficients of the aspherical surfaces S9 - S10 that can be used in this example.

[0156] Table 13

[0157]

[0158] Table 14

[0159]

[0160] The MTF value of the optical lens of this example exceeds 0.70 at a spatial frequency of 25 lp / mm (25 lines / mm); in terms of the RMS of the spot diagram, at the edge field of view, the root mean square radius of the spot on the image plane is 12.5 μm; in terms of the energy entering the diffraction circle, within a circle with a diameter of 15 μm on the image plane, the proportion of the spot energy in the total light energy exceeds 92.9%. The optical lens given in this example has a high resolving power. Example 8

[0161] Figure 8 Shows a schematic structural diagram of the optical lens according to Example 8 of the present application.

[0162] In this example, the positive and negative attributes of the optical power and the surface type of each of the first lens L1 to the fifth lens L5 are the same as those in Example 1.

[0163] Table 15 shows the relevant parameters of each lens of the optical lens of Example 8. Table 16 shows the conic coefficients and higher-order term coefficients of the aspherical surfaces S9 - S10 that can be used in this example.

[0164] Table 15

[0165]

[0166] Table 16

[0167]

[0168] The MTF value of the optical lens of this example exceeds 0.52 at a spatial frequency of 50 lp / mm (50 lines / mm); in terms of the RMS of the spot diagram, at the edge field of view, the root mean square radius of the spot on the image plane is 7.5 μm; in terms of the energy entering the diffraction circle, within a circle with a diameter of 15 μm on the image plane, the proportion of the spot energy in the total light energy exceeds 98.2%. The optical lens given in this example has a high resolving power. Example 9

[0169] Figure 9 Shows a schematic structural diagram of the optical lens according to Example 9 of the present application.

[0170] The difference from Embodiment 1 is that in this embodiment, the second lens L2 is a convex-concave lens with positive optical power, its first side S3 is a convex surface, and its second side S4 is a concave surface. The third lens L3 is a convex-convex lens with positive optical power, its first side S5 is a convex surface, and its second side S6 is a convex surface.

[0171] In this embodiment, both the first lens L1 and the fifth lens L5 are aspherical lenses. Table 17 shows the relevant parameters of each lens of the optical lens of Embodiment 9. Table 18 shows the conic coefficients and higher-order term coefficients of the aspherical surfaces S1-S2, S9-S10 that can be used in this embodiment.

[0172] Table 17

[0173]

[0174] Table 18

[0175]

[0176] The MTF value of the optical lens of this embodiment exceeds 0.53 at a spatial frequency of 50 lp / mm (50 lines / mm); in terms of the RMS of the spot diagram, at the edge field of view, the root mean square radius of the spot on the image plane is 6.1 μm; in terms of the energy entering the diffraction circle, within a circle with a diameter of 15 μm on the image plane, the proportion of the spot energy in the total light energy exceeds 97.2%. The optical lens given in this embodiment has a high resolving power. Embodiment 10

[0177] Figure 10 Fig. shows a schematic structural diagram of an optical lens according to Embodiment 10 of the present application.

[0178] The difference from Embodiment 1 is that in this embodiment, the second lens L2 is a convex-concave lens with positive optical power, its first side S3 is a convex surface, and its second side S4 is a concave surface. The third lens L3 is a convex-convex lens with positive optical power, its first side S5 is a convex surface, and its second side S6 is a convex surface.

[0179] In this embodiment, both the first lens L1 and the fifth lens L5 are aspherical lenses. Table 19 shows the relevant parameters of each lens of the optical lens of Embodiment 10. Table 20 shows the conic coefficients and higher-order term coefficients of the aspherical surfaces S1-S2, S9-S10 that can be used in this embodiment.

[0180] Table 19

[0181]

[0182] Table 20

[0183]

[0184] The spot diagram, MTF diagram, and diffraction circle incident energy diagram of the optical lens of this embodiment are respectively as shown in Figure 33 , Figure 34 and Figure 35 shown. The MTF value of the optical lens of this embodiment exceeds 0.77 at a spatial frequency of 50 lp / mm (50 lines / mm); in terms of the RMS of the spot diagram, at the edge field of view, the root mean square radius of the spot on the image plane is 3.0 μm; in terms of the diffraction circle incident energy, within a circle with a diameter of 15 μm on the image plane, the proportion of the spot energy in the total light energy exceeds 98.3%. The optical lens given in this embodiment has a high resolving power. Embodiment 11

[0185] Figure 11 Fig. shows a schematic structural diagram of an optical lens according to Embodiment 11 of the present application.

[0186] The difference from Embodiment 1 is that in this embodiment, the first lens L1 is a convex-concave lens with a negative optical power, its first side S1 is a convex surface, and its second side S2 is a concave surface. The second lens L2 is a convex-convex lens with a positive optical power, its first side S3 is a convex surface, and its second side S4 is a convex surface.

[0187] Table 21 shows the relevant parameters of each lens of the optical lens of Embodiment 11. Table 22 shows the conic coefficients and higher-order term coefficients of the aspherical surfaces S9 - S10 that can be used in this embodiment.

[0188] Table 21

[0189]

[0190] Table 22

[0191]

[0192] The MTF value of the optical lens of this embodiment exceeds 0.74 at a spatial frequency of 25 lp / mm (25 lines / mm); in terms of the RMS of the spot diagram, at the edge field of view, the root mean square radius of the spot on the image plane is 6.7 μm; in terms of the diffraction circle incident energy, within a circle with a diameter of 15 μm on the image plane, the proportion of the spot energy in the total light energy exceeds 94.7%. The optical lens given in this embodiment has a high resolving power. Embodiment 12

[0193] Figure 12 Fig. shows a schematic structural diagram of an optical lens according to Embodiment 12 of the present application.

[0194] The difference from Embodiment 1 is that in this embodiment, the first lens L1 is a convex-concave lens with a negative optical power, its first side S1 is a convex surface, and its second side S2 is a concave surface. The second lens L2 is a convex-concave lens with a positive optical power, its first side S3 is a convex surface, and its second side S4 is a concave surface.

[0195] Table 23 shows the relevant parameters of each lens of the optical lens of Embodiment 12. Table 24 shows the conic coefficients and high-order term coefficients of the aspherical surfaces S9 - S10 that can be used in this embodiment.

[0196] Table 23

[0197]

[0198] Table 24

[0199]

[0200] The spot diagram, MTF diagram, and diffraction encircled energy diagram of the optical lens of this embodiment are respectively as Figure 36 , Figure 37 and Figure 38 shown. The MTF value of the optical lens of this embodiment exceeds 0.58 at a spatial frequency of 50 lp / mm (50 lines per millimeter); in terms of the RMS of the spot diagram, at the edge field of view, the root mean square radius of the spot on the image plane is 5.0 μm; in terms of the diffraction encircled energy, within a circle with a diameter of 15 μm on the image plane, the proportion of the spot energy in the total light energy exceeds 97.5%. The optical lens given in this embodiment has a high resolving power. Embodiment 13

[0201] Figure 13 Fig. shows a schematic structural diagram of an optical lens according to Embodiment 13 of the present application.

[0202] The difference from Embodiment 1 is that in this embodiment, the first lens L1 is a convex-concave lens with a negative optical power, its first side S1 is a convex surface, and its second side S2 is a concave surface. The second lens L2 is a convex-concave lens with a positive optical power, its first side S3 is a convex surface, and its second side S4 is a concave surface. The third lens L3 is a convex-convex lens with a positive optical power, its first side S5 is a convex surface, and its second side S6 is a convex surface.

[0203] Table 25 shows the relevant parameters of each lens of the optical lens of Embodiment 13. Table 26 shows the conic coefficients and high-order term coefficients of the aspherical surfaces S9 - S10 that can be used in this embodiment.

[0204] Table 25

[0205]

[0206] Table 26

[0207]

[0208] The MTF value of the optical lens of this embodiment exceeds 0.51 at a spatial frequency of 50 lp / mm (50 lines / mm); in terms of the RMS of the spot diagram, at the edge field of view, the root mean square radius of the spot on the image plane is 5.8 μm; in terms of the energy entering the diffraction circle, within a circle with a diameter of 15 μm on the image plane, the proportion of the spot energy in the total light energy exceeds 98.3%. The optical lens given in this embodiment has a high resolving power. Embodiment 14

[0209] Figure 14 Fig. shows a schematic structural diagram of an optical lens according to Embodiment 14 of the present application.

[0210] The difference from Embodiment 1 is that in this embodiment, the fifth lens L5 is a convex-concave lens with a positive optical power, its first side S9 is a convex surface, and its second side S10 is a concave surface.

[0211] Table 27 shows the relevant parameters of each lens of the optical lens of Embodiment 14. Table 28 shows the conic coefficients and higher-order term coefficients of the aspherical mirror surfaces S9 - S10 that can be used in this embodiment.

[0212] Table 27

[0213]

[0214] Table 28

[0215]

[0216] The optical spot diagram, MTF diagram, and energy entering the diffraction circle diagram of the optical lens of this embodiment are respectively as Figure 39 , Figure 40 and Figure 41 shown. The MTF value of the optical lens of this embodiment exceeds 0.65 at a spatial frequency of 50 lp / mm (50 lines / mm); in terms of the RMS of the spot diagram, at the edge field of view, the root mean square radius of the spot on the image plane is 5.4 μm; in terms of the energy entering the diffraction circle, within a circle with a diameter of 15 μm on the image plane, the proportion of the spot energy in the total light energy exceeds 97.5%. The optical lens given in this embodiment has a high resolving power. Embodiment 15

[0217] Figure 15 Fig. shows a schematic structural diagram of an optical lens according to Embodiment 15 of the present application.

[0218] The difference from Embodiment 1 is that in this embodiment, the fifth lens L5 is a convex-concave lens with a positive optical power, its first side S9 is a convex surface, and its second side S10 is a concave surface.

[0219] Table 29 shows the relevant parameters of each lens of the optical lens of Embodiment 15. Table 30 shows the conic coefficients and higher-order term coefficients of the aspherical surfaces S9 - S10 that can be used in this embodiment.

[0220] Table 29

[0221]

[0222] Table 30

[0223]

[0224] The MTF value of the optical lens of this embodiment exceeds 0.69 at a spatial frequency of 50 lp / mm (50 lines / mm); in terms of the RMS of the spot diagram, at the edge field of view, the root mean square radius of the spot on the image plane is 4.2 μm; in terms of the energy entering the diffraction circle, within a circle with a diameter of 15 μm on the image plane, the proportion of the spot energy in the total light energy exceeds 98.3%. The optical lens given in this embodiment has a high resolution. Embodiment 16

[0225] Figure 16 Fig. shows a schematic structural diagram of an optical lens according to Embodiment 16 of the present application.

[0226] The difference from Embodiment 1 is that in this embodiment, the first lens L1 is a concave-concave lens with a negative optical power, its first side S1 is a concave surface, and its second side S2 is a concave surface. The fifth lens L5 is a convex-concave lens with a positive optical power, its first side S9 is a convex surface, and its second side S10 is a concave surface.

[0227] In this embodiment, both the fourth lens L4 and the fifth lens L5 are aspherical lenses. Table 31 shows the relevant parameters of each lens of the optical lens of this embodiment. Table 32 shows the conic coefficients and higher-order term coefficients of each aspherical surface S7 - S10 that can be used in this embodiment.

[0228] Table 31

[0229]

[0230] Table 32

[0231]

[0232] The MTF value of the optical lens of this embodiment exceeds 0.64 at a spatial frequency of 50 lp / mm (50 lines / mm); in terms of the RMS of the spot diagram, in the edge field of view, the root mean square radius of the spot on the image plane is 10.0 μm; in terms of the energy entering the diffraction circle, within a circle with a diameter of 15 μm on the image plane, the proportion of the spot energy in the total light energy exceeds 94.5%. The optical lens given in this embodiment has a high resolving power. Embodiment 17

[0233] Figure 17 Fig. shows a schematic structural diagram of an optical lens according to Embodiment 17 of the present application.

[0234] The difference from Embodiment 1 is that in this embodiment, the first lens L1 is a concave-concave lens with a negative optical power, its first side S1 is a concave surface, and its second side S2 is a concave surface. The fifth lens L5 is a convex-concave lens with a positive optical power, its first side S9 is a convex surface, and its second side S10 is a concave surface.

[0235] In this embodiment, both the fourth lens L4 and the fifth lens L5 are aspherical lenses. Table 33 shows the relevant parameters of each lens of the optical lens of this embodiment. Table 34 shows the conic coefficients and higher-order term coefficients of the aspherical surfaces S7 - S10 that can be used in this embodiment.

[0236] Table 33

[0237]

[0238] Table 34

[0239]

[0240] The MTF value of the optical lens of this embodiment exceeds 0.75 at a spatial frequency of 50 lp / mm (50 lines / mm); in terms of the RMS of the spot diagram, in the edge field of view, the root mean square radius of the spot on the image plane is 5.3 μm; in terms of the energy entering the diffraction circle, within a circle with a diameter of 15 μm on the image plane, the proportion of the spot energy in the total light energy exceeds 98.3%. The optical lens given in this embodiment has a high resolving power. Embodiment 18

[0241] Figure 18 Fig. shows a schematic structural diagram of an optical lens according to Embodiment 18 of the present application.

[0242] The difference from Embodiment 1 is that in this embodiment, the second lens L2 is a convex-convex lens with a positive optical power, its first side S3 is a convex surface, and its second side S4 is a convex surface. The fifth lens L5 is a convex-concave lens with a positive optical power, its first side S9 is a convex surface, and its second side S10 is a concave surface.

[0243] Table 35 shows the relevant parameters of each lens of the optical lens of this embodiment. Table 36 shows the conic coefficients and higher-order term coefficients of the aspherical mirrors S9 - S10 that can be used in this embodiment.

[0244] Table 35

[0245]

[0246] Table 36

[0247]

[0248] The MTF value of the optical lens of this embodiment exceeds 0.65 at a spatial frequency of 50 lp / mm (50 lines / mm); in terms of the RMS of the point spread function, at the edge field of view, the root mean square radius of the spot on the image plane is 9.0 μm; in terms of the energy entering the diffraction circle, within a circle with a diameter of 15 μm on the image plane, the proportion of the spot energy in the total light energy exceeds 92.7%. The optical lens given in this embodiment has a high resolving power. Embodiment 19

[0249] Figure 19 Fig. shows a schematic structural diagram of an optical lens according to Embodiment 19 of the present application.

[0250] The difference from Embodiment 1 is that in this embodiment, the second lens L2 is a convex-convex lens with a positive optical power, its first side S3 is a convex surface, and its second side S4 is a convex surface. The fifth lens L5 is a convex-concave lens with a positive optical power, its first side S9 is a convex surface, and its second side S10 is a concave surface.

[0251] Table 37 shows the relevant parameters of each lens of the optical lens of this embodiment. Table 38 shows the conic coefficients and higher-order term coefficients of the aspherical mirrors S9 - S10 that can be used in this embodiment.

[0252] Table 37

[0253]

[0254] Table 38

[0255]

[0256] The optical point spread function diagram, MTF diagram, and energy entering the diffraction circle diagram of the optical lens of this embodiment are respectively as Figure 42 、 Figure 43 and Figure 44As shown. The MTF value of the optical lens of this embodiment exceeds 0.70 at a spatial frequency of 50 lp / mm (50 lines / mm); in terms of the RMS of the spot diagram, in the edge field of view, the root mean square radius of the spot on the image plane is 4.0 μm; in terms of the energy entering the diffraction circle, within a circle with a diameter of 15 μm on the image plane, the proportion of the spot energy in the total light energy exceeds 98.3%. The optical lens given in this embodiment has a high resolution. Embodiment 20

[0257] Figure 20 Fig. shows a schematic structural diagram of an optical lens according to Embodiment 20 of the present application.

[0258] The difference from Embodiment 1 is that in this embodiment, the second lens L2 is a convex-convex lens with a positive optical power, its first side S3 is a convex surface, and its second side S4 is a convex surface. The fifth lens L5 is a convex-concave lens with a positive optical power, its first side S9 is a convex surface, and its second side S10 is a concave surface.

[0259] Table 39 shows the relevant parameters of each lens of the optical lens of this embodiment. Table 40 shows the conic coefficients and higher-order term coefficients of the aspherical mirror surfaces S9 - S10 that can be used in this embodiment.

[0260] Table 39

[0261]

[0262] Table 40

[0263]

[0264] The MTF value of the optical lens of this embodiment exceeds 0.52 at a spatial frequency of 50 lp / mm (50 lines / mm); in terms of the RMS of the spot diagram, in the edge field of view, the root mean square radius of the spot on the image plane is 6.2 μm; in terms of the energy entering the diffraction circle, within a circle with a diameter of 15 μm on the image plane, the proportion of the spot energy in the total light energy exceeds 96.5%. The optical lens given in this embodiment has a high resolution. Embodiment 21

[0265] Figure 21 Fig. shows a schematic structural diagram of an optical lens according to Embodiment 21 of the present application.

[0266] The difference from Embodiment 1 is that in this embodiment, the second lens L2 is a convex-convex lens with a positive optical power, its first side S3 is a convex surface, and its second side S4 is a convex surface. The fifth lens L5 is a convex-concave lens with a positive optical power, its first side S9 is a convex surface, and its second side S10 is a concave surface.

[0267] Table 41 shows the relevant parameters of each lens of the optical lens of this embodiment. Table 42 shows the conic coefficients and high-order term coefficients of the aspherical mirrors S9 - S10 that can be used in this embodiment.

[0268] Table 41

[0269]

[0270] Table 42

[0271]

[0272] The MTF value of the optical lens of this embodiment exceeds 0.70 at a spatial frequency of 50 lp / mm (50 lines / mm); in terms of the RMS of the spot diagram, at the edge field of view, the root mean square radius of the spot on the image plane is 3.8 μm; in terms of the energy entering the diffraction circle, within a circle with a diameter of 15 μm on the image plane, the proportion of the spot energy in the total light energy exceeds 98.3%. The optical lens given in this embodiment has a high resolving power. Embodiment 22

[0273] Figure 22 Fig. shows a schematic structural diagram of an optical lens according to Embodiment 22 of the present application.

[0274] The difference from Embodiment 1 is that in this embodiment, the second lens L2 is a convex-concave lens with a positive optical power, its first side S3 is a convex surface, and its second side S4 is a concave surface. The fifth lens L5 is a convex-concave lens with a positive optical power, its first side S9 is a convex surface, and its second side S10 is a concave surface.

[0275] Table 43 shows the relevant parameters of each lens of the optical lens of Embodiment 22. Table 44 shows the conic coefficients and high-order term coefficients of the aspherical mirrors S9 - S10 that can be used in this embodiment.

[0276] Table 43

[0277]

[0278] Table 44

[0279]

[0280] The MTF value of the optical lens of this embodiment exceeds 0.58 at a spatial frequency of 50 lp / mm (50 lines / mm); in terms of the RMS of the spot diagram, at the edge field of view, the root mean square radius of the spot on the image plane is 14.5 μm; in terms of the energy entering the diffraction circle, within a circle with a diameter of 15 μm on the image plane, the proportion of the spot energy in the total light energy exceeds 89.2%. The optical lens given in this embodiment has a high resolving power. Embodiment 23

[0281] Figure 23 Shows a schematic structural diagram of an optical lens according to Embodiment 23 of the present application.

[0282] The difference from Embodiment 1 is that in this embodiment, the second lens L2 is a convex-concave lens with positive optical power, its first side S3 is a convex surface, and its second side S4 is a concave surface. The fifth lens L5 is a convex-concave lens with positive optical power, its first side S9 is a convex surface, and its second side S10 is a concave surface.

[0283] Table 45 shows the relevant parameters of each lens of the optical lens in Embodiment 23. Table 46 shows the conic coefficients and higher-order term coefficients of the aspherical mirror surfaces S9 - S10 that can be used in this embodiment.

[0284] Table 45

[0285]

[0286] Table 46

[0287]

[0288] The optical spot diagram, MTF diagram, and diffraction circle incident energy diagram of the optical lens of this embodiment are respectively as Figure 45 , Figure 46 and Figure 47 shown. The MTF value of the optical lens of this embodiment exceeds 0.79 at a spatial frequency of 50 lp / mm (50 lines / mm); in terms of the RMS of the spot diagram, at the edge field of view, the root mean square radius of the spot on the image plane is 5.2 μm; in terms of the diffraction circle incident energy, within a circle with a diameter of 15 μm on the image plane, the proportion of the spot energy in the total light energy exceeds 98.2%. The optical lens given in this embodiment has a high resolution. Embodiment 24

[0289] Figure 24 Shows a schematic structural diagram of an optical lens according to Embodiment 24 of the present application.

[0290] The difference from Embodiment 1 is that in this embodiment, the second lens L2 is a convex-concave lens with positive optical power, its first side S3 is a convex surface, and its second side S4 is a concave surface. The fifth lens L5 is a convex-concave lens with positive optical power, its first side S9 is a convex surface, and its second side S10 is a concave surface.

[0291] Table 47 shows the relevant parameters of each lens of the optical lens in Embodiment 24. Table 48 shows the conic coefficients and higher-order term coefficients of the aspherical mirror surfaces S9 - S10 that can be used in this embodiment.

[0292] Table 47

[0293]

[0294] Table 48

[0295]

[0296] The MTF value of the optical lens of this embodiment exceeds 0.69 at a spatial frequency of 50 lp / mm (50 lines / mm); in terms of the RMS of the spot diagram, in the edge field of view, the root mean square radius of the spot on the image plane is 8.1 μm; in terms of the energy entering the diffraction circle, within a circle with a diameter of 15 μm on the image plane, the proportion of the spot energy in the total light energy exceeds 94.4%. The optical lens given in this embodiment has a high resolving power. Embodiment 25

[0297] Figure 25 Fig. shows a schematic structural diagram of the optical lens according to Embodiment 25 of the present application.

[0298] The difference from Embodiment 1 is that in this embodiment, the second lens L2 is a convex-concave lens with a positive optical power, its first side S3 is a convex surface, and its second side S4 is a concave surface. The fifth lens L5 is a convex-concave lens with a positive optical power, its first side S9 is a convex surface, and its second side S10 is a concave surface.

[0299] Table 49 shows the relevant parameters of each lens of the optical lens of Embodiment 25. Table 50 shows the conic coefficient and high-order term coefficient of the aspherical mirror surfaces S9-S10 that can be used in this embodiment.

[0300] Table 49

[0301]

[0302] Table 50

[0303]

[0304] The MTF value of the optical lens of this embodiment exceeds 0.81 at a spatial frequency of 50 lp / mm (50 lines / mm); in terms of the RMS of the spot diagram, in the edge field of view, the root mean square radius of the spot on the image plane is 4.2 μm; in terms of the energy entering the diffraction circle, within a circle with a diameter of 15 μm on the image plane, the proportion of the spot energy in the total light energy exceeds 98.3%. The optical lens given in this embodiment has a high resolving power. Embodiment 26

[0305] Figure 26 Fig. shows a schematic structural diagram of the optical lens according to Embodiment 26 of the present application.

[0306] The difference from Embodiment 1 is that in this embodiment, the first lens L1 is a concave plano-lens with a negative focal power, its first side S1 is a concave surface, and its second side S2 is a plane. The second lens L2 is a convex-convex lens with a positive focal power, its first side S3 is a convex surface, and its second side S4 is a convex surface. The fifth lens L5 is a convex-concave lens with a positive focal power, its first side S9 is a convex surface, and its second side S10 is a concave surface.

[0307] Table 51 shows the relevant parameters of each lens of the optical lens of Embodiment 26. Table 52 shows the conic coefficients and higher-order term coefficients of the aspherical surfaces S9 - S10 that can be used in this embodiment.

[0308] Table 51

[0309]

[0310] Table 52

[0311]

[0312] The MTF value of the optical lens of this embodiment exceeds 0.69 at a spatial frequency of 50 lp / mm (50 lines / mm); in terms of the RMS of the spot diagram, at the edge field of view, the root mean square radius of the spot on the image plane is 8.6 μm; in terms of the energy within the diffraction circle, within a circle with a diameter of 15 μm on the image plane, the proportion of the spot energy in the total light energy exceeds 94.5%. The optical lens given in this embodiment has a high resolving power. Embodiment 27

[0313] Figure 27 Fig. shows a schematic structural diagram of an optical lens according to Embodiment 27 of the present application.

[0314] The difference from Embodiment 1 is that in this embodiment, the first lens L1 is a convex-concave lens with a negative focal power, its first side S1 is a convex surface, and its second side S2 is a concave surface. The fifth lens L5 is a convex-concave lens with a positive focal power, its first side S9 is a convex surface, and its second side S10 is a concave surface. In this embodiment, the aperture stop STO is located between the first lens L1 and the second lens L2. The first side S9 of the fifth lens L5 has an inflection point.

[0315] Table 53 shows the relevant parameters of each lens of the optical lens of Embodiment 27. Table 54 shows the conic coefficients and higher-order term coefficients of the aspherical surfaces S9 - S10 that can be used in this embodiment.

[0316] Table 53

[0317]

[0318] Table 54

[0319]

[0320] The MTF value of the optical lens of this embodiment exceeds 0.70 at a spatial frequency of 50 lp / mm (50 lines / mm); in terms of the RMS of the spot diagram, in the marginal field of view, the root mean square radius of the spot on the image plane is 4.4 μm; in terms of the energy entering the diffraction circle, within a circle with a diameter of 15 μm on the image plane, the proportion of the spot energy in the total light energy exceeds 97.5%. The optical lens given in this embodiment has a high resolving power. Embodiment 28

[0321] Figure 28 The structural schematic diagram of the optical lens according to Embodiment 28 of the present application is shown.

[0322] The difference from Embodiment 1 is that in this embodiment, the first lens L1 is a convex-concave lens with a negative optical power, its first side S1 is a convex surface, and its second side S2 is a concave surface. The second lens L2 is a convex-concave lens with a positive optical power, its first side S3 is a convex surface, and its second side S4 is a concave surface. The fifth lens L5 is a convex-concave lens with a positive optical power, its first side S9 is a convex surface, and its second side S10 is a concave surface. In this embodiment, the aperture stop STO is located between the first lens L1 and the second lens L2. The first side S9 of the fifth lens L5 has an inflection point.

[0323] Table 55 shows the relevant parameters of each lens of the optical lens of Embodiment 28. Table 56 shows the conic coefficients and higher-order term coefficients of the aspherical mirror surfaces S9 - S10 that can be used in this embodiment.

[0324] Table 55

[0325]

[0326] Table 56

[0327]

[0328] The MTF value of the optical lens of this embodiment exceeds 0.57 at a spatial frequency of 50 lp / mm (50 lines / mm); in terms of the RMS of the spot diagram, in the marginal field of view, the root mean square radius of the spot on the image plane is 4.3 μm; in terms of the energy entering the diffraction circle, within a circle with a diameter of 15 μm on the image plane, the proportion of the spot energy in the total light energy exceeds 97.8%. The optical lens given in this embodiment has a high resolving power. Embodiment 29

[0329] Figure 29 The structural schematic diagram of the optical lens according to Embodiment 29 of the present application is shown.

[0330] The difference from Embodiment 1 is that in this embodiment, the first lens L1 is a convex-concave lens with a negative optical power, its first side S1 is a convex surface, and its second side S2 is a concave surface. The second lens L2 is a convex-convex lens with a positive optical power, its first side S3 is a convex surface, and its second side S4 is a convex surface. The fifth lens L5 is a convex-concave lens with a positive optical power, its first side S9 is a convex surface, and its second side S10 is a concave surface. In this embodiment, the aperture stop STO is located between the first lens L1 and the second lens L2. The first side S9 of the fifth lens L5 has an inflection point.

[0331] Table 57 shows the relevant parameters of each lens of the optical lens of Embodiment 29. Table 58 shows the conic coefficients and higher-order term coefficients of the aspherical surfaces S9 - S10 that can be used in this embodiment.

[0332] Table 57

[0333]

[0334] Table 58

[0335]

[0336] The MTF value of the optical lens of this embodiment exceeds 0.68 at a spatial frequency of 50 lp / mm (50 lines / mm); in terms of the RMS of the spot diagram, at the edge field of view, the root mean square radius of the spot on the image plane is 5.3 μm; in terms of the energy within the diffraction circle, within a circle with a diameter of 15 μm on the image plane, the proportion of the spot energy in the total light energy exceeds 96.2%. The optical lens given in this embodiment has a high resolving power.

[0337] In summary, the parameter values in Embodiments 1 to 29 are shown in Tables 59 to 61 below, where the units of F, ENPD, TTL, H, D, TL, BFL, F1 - F5, and D2 - D10 are all millimeters (mm), the unit of FOV is degrees (°), the unit of θ is radians, and the unit of φ25 is mm -1 。

[0338] Table 59

[0339]

[0340] Table 60

[0341]

[0342] Table 61

[0343]

[0344] Moreover, Embodiments 1 to 29 respectively satisfy the relationships shown in Tables 62 to 64 below.

[0345] Table 62

[0346]

[0347] Table 63

[0348]

[0349] Table 64

[0350]

[0351] The present application also provides an electronic device, which may include an optical lens according to the above embodiments 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 ranging camera, or an imaging module integrated on a ranging device such as a ranging device. In addition, the electronic device may also be an independent imaging device such as a vehicle-mounted camera, or an imaging module integrated on an auxiliary driving system such as an auxiliary driving system.

[0352] The above description is only a preferred embodiment of the present application and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solutions formed by the 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 technical solutions formed by mutually replacing the above features with the technical features (but not limited to) having similar functions disclosed in the present application.

Claims

1. An optical lens, characterized in that: The optical lens includes, in sequence from the first side to the second side along the optical axis: A first lens having negative optical power, wherein at least one of the first side surface and the second side surface is a concave surface; a second lens having positive optical power, wherein at least one of the first side surface and the second side surface is convex; a third lens element having positive power, wherein the first side surface of the third lens element is convex; a fourth lens element having positive optical power, wherein the first side surface is convex and the second side surface is concave; and a fifth lens having optical power, wherein the first side surface is convex and the second side surface is concave; The number of lenses having optical power in the optical lens is five; The total effective focal length F of the optical lens and the effective focal length F2 of the second lens, the effective focal length F3 of the third lens, the effective focal length F4 of the fourth lens and the effective focal length F5 of the fifth lens satisfy: 0.4≤F / F2+F / F3+F / F4+F / F5≤1.2; A distance T12 from the second side surface of the first lens to the first side surface of the second 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: 0.09≤T12 / TTL≤0.4; The maximum field of view FOV of the optical lens and the total effective focal length F of the optical lens satisfy: 1.55≤FOV / F≤2.

1.

2. The optical lens according to claim 1, characterized in that: The first side surface and the second side surface of the first lens are respectively a concave surface and a convex surface, or respectively a concave surface and a concave surface, or respectively a convex surface and a concave surface, or respectively a concave surface and a plane surface; The first side surface and the second side surface of the second lens are respectively a concave surface and a convex surface, or respectively a convex surface and a concave surface, or respectively a convex surface and a convex surface; The second side surface of the third lens is a convex surface or a concave surface; The fifth lens has positive or negative refractive power.

3. The optical lens according to claim 1 or 2, characterized in that: The optical lens meets at least one of the following conditions: 0.5≤F / ENPD≤1.2; 0.15≤TTL / H / FOV≤0.3; 0.04≤BFL / TTL≤0.2; 0.07≤D / H / FOV≤0.15; 0.14≤D / H / F≤0.25; -0.1≤(H / 2-F×θ / 2) / (F×θ / 2)≤0.05; 0.2≤(F×θ) / D≤0.5; 50≤(FOV×F) / H≤60; Among them, ENPD is the entrance pupil diameter of the optical lens, H is the image height corresponding to the maximum field of view angle of the optical lens, BFL is the distance from the center of the second side surface of the fifth lens to the imaging surface on the optical axis, D is the maximum effective light clearance diameter of the first side surface of the first lens corresponding to the maximum field of view angle of the optical lens, and θ is the radian value of the maximum field of view angle of the optical lens.

4. The optical lens according to claim 1 or 2, characterized in that: The optical lens meets at least one of the following conditions: -8≤F1 / F≤-1;-8≤ R1 / F1≤-0.2;1.2≤D / D10≤3.5;2≤D / H≤10;1.2≤ F1 / T12 ≤8; Among them, F1 is the effective focal length of the first lens, R1 is the curvature radius of the first side surface of the first lens, D is the maximum effective light-clearance aperture of the first side surface of the first lens corresponding to the maximum field of view angle of the optical lens, D10 is the maximum effective light-clearance aperture of the second side surface of the fifth lens, and H is the image height corresponding to the maximum field of view angle of the optical lens.

5. The optical lens according to claim 1 or 2, characterized in that: The effective focal length F2 of the second lens and the total effective focal length F of the optical lens satisfy: 2.5≤F2 / F≤25.

6. The optical lens according to claim 1 or 2, characterized in that: The optical lens meets at least one of the following conditions: 1.5≤F3 / F≤12; 0.2≤R5 / F3≤1.8; Wherein, R5 is the radius of curvature of the first side surface of the third lens.

7. The optical lens according to claim 1 or 2, characterized in that: The optical lens meets at least one of the following conditions: 1≤F4 / F≤8.5; 0.2≤R8 / TTL≤4.5; 0.05≤R7 / (CT4+R8)≤1; Wherein, R7 is the curvature radius of the first side surface of the fourth lens, R8 is the curvature radius of the second side surface of the fourth lens, and CT4 is the center thickness of the fourth lens on the optical axis.

8. The optical lens according to claim 1 or 2, characterized in that: The optical lens meets at least one of the following conditions: 1.5≤ F5 / F≤12;0.12≤R10 / TTL≤0.9;3≤D10×BFL / H≤26;0.3≤R9 / (CT5+R10)≤7.5; Among them, R9 is the curvature radius of the first side surface of the fifth lens, R10 is the curvature radius of the second side surface of the fifth lens, D10 is the maximum effective light clearance aperture of the second side surface of the fifth lens, BFL is the distance from the center of the second side surface of the fifth lens to the imaging plane on the optical axis, H is the image height corresponding to the maximum field of view angle of the optical lens, and CT5 is the center thickness of the fifth lens on the optical axis.

9. The optical lens according to claim 1 or 2, characterized in that: The optical lens meets the following requirements: 3≤(F2+F3+F4) / 3 / F≤12.

10. The optical lens according to claim 1 or 2, characterized in that: The optical lens meets at least one of the following conditions: <h2 style=";text-align:left;direction:ltr">0.45≤<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr"> 25 / <h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr"> ≤0.99;0.02≤(T23+T34+T45) / TTL≤0.55; in, 25 is the combined optical power value of the second lens, the third lens, the fourth lens and the fifth lens, is the total optical power value of the optical lens, T23 is the distance from the second side surface of the second lens to the first side surface of the third lens on the optical axis, T34 is the distance from the second side surface of the third lens to the first side surface of the fourth lens on the optical axis, and T45 is the distance from the second side surface of the fourth lens to the first side surface of the fifth lens on the optical axis.

11. The optical lens according to claim 1 or 2, characterized in that: The optical lens meets at least one of the following conditions: 0.03≤R7 / R9≤2.5; 1≤R8 / R10≤25; Among them, R7 is the curvature radius of the first side surface of the fourth lens, R9 is the curvature radius of the first side surface of the fifth lens, R8 is the curvature radius of the second side surface of the fourth lens, and R10 is the curvature radius of the second side surface of the fifth lens.

12. The optical lens according to claim 1 or 2, characterized in that: A distance T23 from the second side surface of the second lens to the first side surface of 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: 0≤T23 / TTL≤0.

15.

13. The optical lens according to claim 1 or 2, characterized in that: The total effective focal length F of the optical lens and the image height H corresponding to the maximum field angle of the optical lens satisfy the following: 1.5≤F / H≤2.

2.

14. The optical lens according to claim 1 or 2, characterized in that: 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 satisfy the following: 2.8≤TTL / F≤5.

5.

15. The optical lens according to claim 1 or 2, characterized in that: The optical lens meets at least one of the following conditions: 0.5≤F / F2+F / F3+F / F4+F / F5≤1.13;0.12≤T12 / TTL≤0.31;0.7≤F / ENPD≤1.1;0.18≤TTL / H / FOV≤0.27;0.04≤BFL / TTL≤0.16;0.07≤D / H / FOV≤0.12;0.14≤D / H / F≤0.21;-0.05≤(H / 2-F×θ / 2) / (F×θ / 2)≤0.025;0.27≤(F×θ) / D≤0.42;55≤(FOV×F) / H≤60;1.7≤FOV / F≤1.9;-4.7≤F1 / F≤-1.4;-7≤ R1 / F1≤-0.27;1.6≤D / D10≤3.1;2.4≤D / H≤9.1;1.6≤ F1 / T12 ≤6;3≤F2 / F≤21.5;2.5≤F3 / F≤9;0.23≤R5 / F3≤1.4;1.44≤F4 / F≤7.5;0.25≤R8 / TTL≤3.8;0.07≤R7 / (CT4+R8)≤0.75;2≤ F5 / F≤9;0.15≤R10 / TTL≤0.5;4.2≤D10×BFL / H≤23.5;0.5≤R9 / (CT5+R10)≤6.6;3.6≤(F2+F3+F4) / 3 / F≤9;0.6≤ 25 / ≤0.96;0.05≤(T23+T34+T45) / TTL≤0.44;0.07≤R7 / R9≤2; 1.3≤R8 / R10≤19; 0.001≤T23 / TTL≤0.12; 1.7≤F / H≤1.89; 3.25≤TTL / F≤4.8; Wherein, ENPD is the entrance pupil diameter of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, BFL is the distance from the center of the second side surface of the fifth lens to the imaging surface on the optical axis, D is the maximum effective aperture of the first side surface of the first lens corresponding to the maximum field of view of the optical lens, θ is the radian value of the maximum field of view of the optical lens, F1 is the effective focal length of the first lens, R1 is the radius of curvature of the first side surface of the first lens, D10 is the maximum effective aperture of the second side surface of the fifth lens, R5 is the radius of curvature of the first side surface of the third lens, R7 is the radius of curvature of the first side surface of the fourth lens, R8 is the radius of curvature of the second side surface of the fourth lens, CT4 is the center thickness of the fourth lens on the optical axis, R9 is the radius of curvature of the first side surface of the fifth lens, R10 is the radius of curvature of the second side surface of the fifth lens, CT5 is the center thickness of the fifth lens on the optical axis, 25 is the combined optical power value of the second lens, the third lens, the fourth lens and the fifth lens, is the total optical power value of the optical lens, T23 is the distance from the second side surface of the second lens to the first side surface of the third lens on the optical axis, T34 is the distance from the second side surface of the third lens to the first side surface of the fourth lens on the optical axis, and T45 is the distance from the second side surface of the fourth lens to the first side surface of the fifth lens on the optical axis.

16. An electronic device, characterized in that: comprising the optical lens according to any one of claims 1 to 15, 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