Optical lenses and electronic equipment

Abstract

The present application discloses an optical lens and an electronic device. The optical lens includes, in order from the first side to the second side along the optical axis: a first lens with negative optical power; a second lens with negative optical power, whose first side surface is concave and whose second side surface is convex; a third lens with positive optical power; a fourth lens with optical power; and a fifth lens with optical power, whose first side surface is convex and whose second side surface is concave; the optical lens satisfies: ‑12≤F2 / F≤‑2, 0.27≤T23 / TTL≤0.4, wherein F is the total effective focal length of the optical lens, F2 is the effective focal length of the second lens, TTL is the total optical length of the optical lens, and T23 is the spacing distance between the second lens and the third lens along the optical axis. The optical lens disclosed in the present application can achieve high resolution.

Description

Technical Field

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

[0002] With the continuous progress of science and technology and the continuous development of society, the market has higher and higher requirements for optical lenses used in various scenarios, especially for optical lenses used in LiDAR. LiDAR lenses are key components for automatic driving assistance systems to obtain external information. In order to achieve the requirements of safe driving and special installation positions, LiDAR lenses in automatic driving assistance systems have more special requirements than ordinary optical lenses.

[0003] However, the optical lenses in related technologies, especially those used in LiDAR, have poor resolution and cannot meet the market's requirements for high resolution. Summary of the invention

[0004] One aspect of the present application provides an optical lens, which includes, in order from the first side to the second side along the optical axis: a first lens with negative optical power; a second lens with negative optical power, whose first side surface is concave and the second side surface is convex; a third lens with positive optical power; a fourth lens with optical power; and a fifth lens with optical power, whose first side surface is convex and the second side surface is concave; the optical lens satisfies: -12≤F2 / F≤-2, 0.27≤T23 / TTL≤0.4, wherein F is the total effective focal length of the optical lens, F2 is the effective focal length of the second lens, TTL is the total optical length of the optical lens, and T23 is the spacing distance between the second lens and the third lens along the optical axis, so that the optical lens can achieve high resolution.

[0005] Another aspect of the present application provides an electronic device, comprising the optical lens of any of the above embodiments, and an imaging element for converting an optical image formed by the optical lens into an electrical signal, or a light source. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Other features, purposes and advantages of the present application will become more apparent through the following detailed description of the embodiments in conjunction with the accompanying drawings. In the accompanying drawings:

[0007] Figures 1 to 42 Schematic diagrams of the structures of optical lenses according to Embodiments 1 to 42 of the present application are respectively shown; and

[0008] Fig.43 , Fig.44 as well as Fig.45 Schematic diagrams of MTF curves of optical lenses according to Example 9, Example 15 and Example 32 of the present application are respectively shown. DETAILED DESCRIPTION

[0009] In order to facilitate the understanding of the present application, the present application will be described more comprehensively below with reference to the relevant drawings. It should be understood that these detailed descriptions are only descriptions of exemplary embodiments of the present application, and do not limit the scope of the present application in any way. Throughout the specification, the same figure numbers refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0010] It should be noted that in this specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the features. Therefore, without departing from the teaching of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0011] It should be noted that the optical lenses provided in Examples 1 to 42 of the present application can all achieve good imaging quality, and their MTF (modulation transfer function) curve diagrams are relatively close. Therefore, the present application only exemplarily shows the MTF (modulation transfer function) curve diagrams of the optical lenses of Examples 9, 15 and 32, and the MTF (modulation transfer function) curve diagrams of the optical lenses of other embodiments are no longer shown one by one, and those skilled in the art should be able to know them based on the contents disclosed in this application.

[0012] In the drawings, the thickness, size and shape of the lenses have been slightly exaggerated for ease of explanation. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to the shapes of the spherical or aspherical surfaces shown in the drawings. The drawings are only examples and are not drawn strictly to scale.

[0013] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the first side is called the first side surface of the lens, the surface of each lens closest to the second side is called the second side surface of the lens, and the surface of the optical lens closest to the second side is called the second side surface of the optical lens.

[0014] It should be understood that the optical lens provided in the present application can be used for both video and projection. When the optical lens provided in the present application is used for a video lens or a laser radar receiving end lens, the video lens may be, for example, a vehicle-mounted camera, an infrared camera, a drone camera, a night vision camera, a security monitoring camera, etc., and the "first side" referred to in this article may refer to the object side, and the "second side" may refer to the image side, and the light from the object side may be imaged on the image side; when the optical lens provided in the present application is used for a projection lens or a radar transmitting end lens, the "first side" referred to in this article may refer to the object side, and the "second side" may refer to the light source side, and the light from the light source side is projected to the first side after passing through the optical lens, and forms an image or illuminates an area on the first side.

[0015] It should also be understood that the terms "comprises", "including", "having", "includes" and / or "comprising", when used in this specification, indicate the presence of the stated features, elements and / or components, but do not exclude the presence or addition of one or more other features, elements, components and / or combinations thereof. In addition, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire listed features rather than modifying the individual elements in the list. In addition, when describing embodiments of the present application, "may" is used to mean "one or more embodiments of the present application". And, the term "exemplary" is intended to refer to an example or illustration.

[0016] Unless otherwise defined, all terms (including technical terms and scientific terms) used in this article have the same meaning as commonly understood by ordinary technicians in the field to which this application belongs. It should also be understood that terms (such as terms defined in commonly used dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined in this article.

[0017] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0018] The features, principles and other aspects of the present application are described in detail below.

[0019] 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, which are arranged in sequence from the first side to the second side along the optical axis.

[0020] In an exemplary embodiment, the optical lens provided by the present application can be used as, for example, a vehicle-mounted lens, in which case the first side of the optical lens can be the object side, and the second side can be the image side. Light from the object side can be imaged on the image side. The second side of the optical lens is the imaging surface of the optical lens.

[0021] In an exemplary embodiment, the optical lens provided by the present application can be used as, for example, a projection lens or a laser radar transmitting end lens. In this case, the second side of the optical lens can be an image source side, and the first side can be an imaging side. Light from the image source side can be imaged on the imaging side. The second side surface of the optical lens is the image source surface of the optical lens.

[0022] In an exemplary embodiment, the optical lens may further include a photosensitive element disposed on the second side surface. Optionally, the photosensitive element disposed on the second side surface may be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS).

[0023] In an exemplary embodiment, an aperture for limiting the light beam may be provided between the second lens and the third lens, and between the third lens and the fourth lens to further improve the imaging quality of the optical lens. The aperture is conducive to converging the light entering the optical system, balancing the aperture size of the lenses in the front and rear optical systems, and can achieve a small FNO of the optical lens while smoothing the light trend. However, it should be noted that the position of the aperture disclosed here is only an example and not a limitation; in alternative embodiments, the aperture may also be set at other positions according to actual needs.

[0024] In an exemplary embodiment, the first lens may have a negative focal length, and its first side may be a concave surface, and its second side may be a convex surface. The first lens may have a negative focal length and its first side may be a concave surface, which is conducive to proper diffusion of light. In an exemplary embodiment, the first lens may be meniscus-shaped as a whole, so that the physical aperture of the aperture is enlarged, a larger amount of light is input, and it is conducive to increasing the illumination of the picture. The second side of the first lens is a convex surface, so that the light emitted by the first lens can be smoothly incident on the rear optical system, which is conducive to reducing the sensitivity of the optical lens.

[0025] In an exemplary embodiment, the first lens may have a negative optical power, and its first side surface may be a convex surface, and its second side surface may be a concave surface. The first lens having a negative optical power can achieve divergent light, and can disperse the central light and the edge light of each field of view. Moreover, under the same field of view angle, the light emitted through the second side surface of the first lens can make the rear optical system have a larger light receiving surface, thereby expanding the physical aperture of the aperture, and achieving a larger amount of light entering, which is beneficial to increase the illumination of the picture. The first side surface of the first lens is convex, and in combination with the second side surface which is concave, the light emitted through the first lens can be smoothly incident on the rear optical system, which is beneficial to reduce the sensitivity of the optical lens. In addition, the first side surface of the first lens is convex, which can also help water droplets slide off in practical applications and reduce the impact on imaging.

[0026] In an exemplary embodiment, the first lens may have negative optical power, and its first side surface may be a concave surface, and its second side surface may be a concave surface. The first lens has negative optical power, and both its first side surface and its second side surface are concave surfaces, which is beneficial to collecting field light, increasing the luminous flux of the optical lens, and diffusing light to the rear optical system.

[0027] In an exemplary embodiment, the first lens may have a negative optical power, and its first side surface may be a concave surface, and its second side surface may be a plane surface. The first lens may have a negative optical power and its first side surface may be a concave surface, which is conducive to light diffusion, and may expand the physical aperture of the aperture to achieve a larger amount of light entering, which is conducive to increasing the illumination of the picture. The second side surface may be a plane, which may increase the optical path of the light emitted from the first side surface, so that the light emitted from the first lens may be smoothly incident to the rear, which is conducive to reducing the sensitivity of the optical lens.

[0028] In an exemplary embodiment, the second lens may have a negative optical power, and its first side surface may be a concave surface, and its second side surface may be a convex surface. The second lens has a negative optical power, and its first side surface is a concave surface, and its second side surface is a convex surface, which is conducive to properly diffusing the light. In an exemplary embodiment, the second lens may be in a meniscus shape as a whole, so that the light collected by the large aperture at the front end is properly diverged, which is conducive to correcting aberrations and improving the resolution of the optical lens.

[0029] In an exemplary embodiment, at least one of the first to fifth lenses may be a spherical lens or an aspherical lens. In an exemplary embodiment, the third lens, the fourth lens and / or the fifth lens may be an aspherical lens. The present application does not specifically limit the specific number of spherical lenses and aspherical lenses. When focusing on imaging quality, the number of aspherical lenses can be increased, or even all lenses use aspherical lenses. The characteristic of an aspherical lens is that the curvature changes continuously from the center of the lens to the periphery. Unlike a spherical lens with a constant curvature from the center of the lens to the periphery, an aspherical lens has a better curvature radius characteristic, and has the advantages of improving distortion aberration and improving astigmatism aberration. After using an aspherical lens, the aberration that occurs during imaging can be eliminated as much as possible, thereby improving the imaging quality of the lens. The setting of an aspherical lens helps to correct system aberrations and improve resolution.

[0030] In an exemplary embodiment, the third lens may have positive power, and its first side surface may be convex, and its second side surface may be convex. The third lens has positive power, and its first side surface is convex, so as to collect as much light as possible to enter the rear optical system, and its second side surface is convex, so that the light can quickly transition to the rear optical system and reduce the aperture of the optical lens.

[0031] In an exemplary embodiment, the third lens may have positive focal power, and its first side surface may be concave, and its second side surface may be convex. The third lens has positive focal power, and its first side surface is concave, which is conducive to diffusing light, and can receive light diverged by the second lens, reducing the deflection of light. In an exemplary embodiment, the third lens may be meniscus-shaped as a whole, which is conducive to converging light to the fourth lens to a certain extent. In this embodiment, the third lens plays the role of receiving the front and rear optical systems in the entire optical lens, and can deflect the light passing through the front optical system at a smaller angle, so as to ensure the low sensitivity of the optical lens while better correcting aberrations, thereby improving the resolution of the optical lens.

[0032] In an exemplary embodiment, the third lens may have positive power, and its first side surface may be convex and its second side surface may be concave. The third lens has positive power, and its first side surface is convex, so as to collect as much light as possible into the rear optical system; and its second side surface is concave, so that the light can enter the rear optical system as smoothly as possible, which is conducive to achieving low sensitivity and small front-end diameter of the optical lens.

[0033] In an exemplary embodiment, the fourth lens may have a negative optical power, and its first side surface may be a convex surface, and its second side surface may be a concave surface. The fourth lens has a negative optical power, and its first side surface is a convex surface, and its second side surface is a concave surface, which is conducive to properly diffusing the light. In an exemplary embodiment, the fourth lens may be in a meniscus shape as a whole, so that the light collected by the large aperture at the front end can be properly diverged, which is conducive to correcting aberrations and improving the resolution of the optical lens.

[0034] In an exemplary embodiment, the fourth lens may have negative optical power, its first side surface may be concave, and its second side surface may be concave. The fourth lens has negative optical power, its first side surface is concave, and its second side surface is concave, which is conducive to collecting field light, increasing the luminous flux of the optical lens, and can diffuse the light to the rear optical system.

[0035] In an exemplary embodiment, the fourth lens may have a negative optical power, and its first side surface may be a concave surface, and its second side surface may be a convex surface. The fourth lens has a negative optical power, and its first side surface is a concave surface, and its second side surface is a convex surface, which is conducive to properly diffusing the light. In an exemplary embodiment, the fourth lens may be in a meniscus shape as a whole, so that the light collected by the large aperture at the front end can be properly diverged, which is conducive to correcting aberrations and improving the resolution of the optical lens.

[0036] In an exemplary embodiment, the fourth lens may have positive power, and its first side surface may be convex, and its second side surface may be convex. The fourth lens has positive power, and its first side surface is convex, so as to collect as much light as possible to enter the rear optical system; and its second side surface is convex, so as to make the light quickly transition to the rear optical system to reduce the aperture of the optical lens.

[0037] In an exemplary embodiment, the fourth lens may have positive power, and its first side surface may be convex, and its second side surface may be concave. The fourth lens has positive power, and its first side surface is convex, which can collect as much light as possible to enter the rear optical system; its second side surface is concave, which can make the light enter the rear optical system as smoothly as possible, which is conducive to achieving low sensitivity and small front-end diameter of the optical lens.

[0038] In an exemplary embodiment, the fifth lens may have positive power, and its first side surface may be convex, and its second side surface may be concave. The fifth lens has positive power, and its first side surface is convex, which can collect as much light as possible to enter the rear optical system; its second side surface is concave, which can make the light enter the rear optical system as smoothly as possible, which is conducive to achieving low sensitivity and small front end diameter of the optical lens.

[0039] In an exemplary embodiment, the fifth lens may have a negative optical power, and its first side surface may be a convex surface, and its second side surface may be a concave surface. The fifth lens has a negative optical power, and its first side surface is a convex surface, and its second side surface is a concave surface, which is conducive to properly diffusing light. In an exemplary embodiment, the fifth lens is in a meniscus shape as a whole, which can make the light collected by the large aperture at the front end diverge appropriately, which is conducive to correcting aberrations and improving the resolution of the optical lens.

[0040] In the present application, F is the total effective focal length of the optical lens, F1 is the effective focal length of the first 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, F5 is the effective focal length of the fifth lens, R1 is the radius of curvature of the first side surface of the first lens, R2 is the radius of curvature of the second side surface of the first lens, R3 is the radius of curvature of the first side surface of the second lens, R4 is the radius of curvature of the second side surface of the second 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, 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, BFL is the optical back focus of the optical lens, D is the maximum optical aperture of the first side surface of the first lens corresponding to the maximum field of view of the optical lens, and D10 is the maximum optical aperture of the second side surface of the fifth lens corresponding to the maximum field of view of the optical lens. The maximum optical aperture is the optical aperture, CT1 is the center thickness of the first lens (i.e., the spacing distance from the first side surface to the second side surface of the lens along the optical axis), CT2 is the center thickness of the second lens, CT5 is the center thickness of the fifth lens, H is the image height corresponding to the maximum field of view of the optical lens, FOV is the maximum field of view of the optical lens, TTL is the total optical length of the optical lens, ENPD is the entrance pupil diameter of the optical lens, θ is the arc value corresponding to the maximum field of view of the optical lens, T12 is the spacing distance between the first lens and the second lens along the optical axis, T23 is the spacing distance between the second lens and the third lens along the optical axis, T34 is the spacing distance between the third lens and the fourth lens along the optical axis, T45 is the spacing distance between the fourth lens and the fifth lens along the optical axis, Φ is the total optical power value of the optical lens, Φ12 is the combined optical power value of the first lens and the second lens, and Φ345 is the combined optical power value of the third lens, the fourth lens and the fifth lens.

[0041] Figure 1 The optical lens provided in this application can be used as, for example, a camera lens or a laser radar receiving end lens. Figure 1 IMA represents an imaging surface, and light from an object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface arranged on the second side, wherein an image sensor chip is arranged on the imaging surface. It should be understood that the optical lens provided in the present application can also be used as, for example, a projection lens or a laser radar transmitting end lens. In this case, Figure 1 Here, IMA represents a light source surface, and light from the light source surface passes through the surfaces S14 to S1 in sequence and is finally projected onto a projection surface (not shown) disposed on the first side.

[0042] In an exemplary embodiment, the optical lens may satisfy: 0.5≤F / ENPD≤1.8. By making the optical lens satisfy the above conditional formula, a small FNO of the optical lens can be achieved, which is beneficial to increase the amount of light entering the optical lens. Preferably, the optical lens may further satisfy: 0.7≤F / ENPD≤1.1, so as to achieve a high luminous flux of the optical lens.

[0043] In an exemplary embodiment, the optical lens may satisfy: 3≤TTL / F≤6. By making the optical lens satisfy the above conditional formula, the ratio of the total optical length to the total effective focal length of the optical lens is controlled, which is conducive to achieving a longer focal length and miniaturization of the optical lens. Preferably, the optical lens may further satisfy: 3.6≤TTL / F≤5, so as to achieve miniaturization of the optical lens.

[0044] In an exemplary embodiment, the optical lens may satisfy: 0.1≤TTL / H / FOVx1°≤0.4. By making the optical lens satisfy the above conditional formula, controlling the total optical length of the optical lens, the image height corresponding to the maximum field of view angle, and the ratio of the maximum field of view angle, the miniaturization and large image plane of the optical lens can be achieved. Preferably, the optical lens may further satisfy: 0.2≤TTL / H / FOVx1°≤0.3, so as to achieve miniaturization of the optical lens.

[0045] In an exemplary embodiment, the optical lens may satisfy: BFL / TTL≤0.3. By making the optical lens satisfy the above conditional formula, the optical back focus of the optical lens is short, and the miniaturization of the optical lens can be achieved on the basis of ensuring the space for installing and focusing the optical elements. In this embodiment, the value of BFL / TTL can be infinitely close to 0. Preferably, the optical lens can further satisfy: 0.065≤BFL / TTL≤0.21, so as to achieve the miniaturization of the optical lens.

[0046] In an exemplary embodiment, the optical lens may satisfy: D / H / FOVx1°≤0.15. By making the optical lens satisfy the above conditional formula, controlling the maximum aperture of the first side of the first lens corresponding to the maximum field of view of the optical lens, and the ratio of the image height corresponding to the maximum field of view to the maximum field of view, the miniaturization and large image surface of the optical lens can be achieved. In this embodiment, the value of D / H / FOVx1° can be infinitely close to 0. Preferably, the optical lens can further satisfy: 0.08≤D / H / FOVx1°≤0.12, so as to achieve a small aperture of the optical lens.

[0047] In an exemplary embodiment, the optical lens may satisfy: D / H / F≤0.4 mm -1 By making the optical lens satisfy the above conditional formula, controlling the maximum aperture of the first side of the first lens corresponding to the maximum field of view of the optical lens, the ratio of the image height corresponding to the maximum field of view and the total effective focal length, the small aperture of the optical lens can be achieved. Preferably, the optical lens can further satisfy: 0.15mm -1 ≤D / H / F≤0.3mm -1 , to achieve a small aperture of the optical lens.

[0048] In an exemplary embodiment, the optical lens may satisfy: 0.5rad≥(F*θ) / D≥0.1rad. By making the optical lens satisfy the above conditional formula, the aperture of the front end of the optical lens can be made small, thereby reducing the volume of the imaging system of the optical lens. Preferably, the optical lens may further satisfy: 0.4rad≥(F*θ) / D≥0.25rad, thereby achieving a small aperture of the optical lens.

[0049] In an exemplary embodiment, the optical lens may satisfy: (FOV*F) / H≥52°. By making the optical lens satisfy the above conditional formula, the optical lens can have a large field of view under the condition that the image height and total effective focal length corresponding to the maximum field of view of the optical lens are the same, which is beneficial to the miniaturization of the optical lens. In this embodiment, the value of (FOV*F) / H can approach positive infinity infinitely. Preferably, the optical lens can further satisfy: 60°≥(FOV*F) / H≥54°, so as to achieve a small total optical length of the optical lens and thus achieve miniaturization of the optical lens.

[0050] In an exemplary embodiment, the optical lens may satisfy: -15≤F1 / F≤-2. By making the optical lens satisfy the above conditional formula and controlling the effective focal length of the first lens, the field of view light can be received and diffused backward, achieving a smooth transition of the light beam, thereby achieving a high resolution of the optical lens. Preferably, the optical lens may further satisfy: -12≤F1 / F≤-3.8, achieving a high resolution of the optical lens.

[0051] In an exemplary embodiment, the optical lens may satisfy: -12≤F2 / F≤-2. By making the optical lens satisfy the above conditional formula and controlling the ratio of the effective focal length value of the second lens to the total effective focal length value, the optical path of the edge field light can be increased while the total effective focal length is constant and the second lens can diffuse the divergent light from the first lens again, which helps to achieve a smooth transition of the light beam, thereby reducing light sensitivity and improving the resolution of the optical lens. Preferably, the optical lens may further satisfy: -9.5≤F2 / F≤-2.5, so as to achieve high resolution of the optical lens.

[0052] In an exemplary embodiment, the optical lens may satisfy: 8 ≥ F3 / F ≥ 0.5. By making the optical lens satisfy the above conditional formula and controlling the effective focal length value of the third lens, the light diverged by the front optical system can be converged, which is conducive to a smooth transition of the light trend, thereby facilitating the improvement of the image quality of the optical lens. Preferably, the optical lens may further satisfy: 5 ≥ F3 / F ≥ 1.3, achieving high resolution of the optical lens.

[0053] In an exemplary embodiment, the optical lens may satisfy: 0<|F4 / F|≤18. In an exemplary embodiment, the fourth lens has a negative optical focal length. By making the optical lens satisfy the above conditional formula and controlling the effective focal length of the fourth lens, the light from the third lens can be received and diffused, and the optical path of the edge field of view light can be increased, thereby helping to achieve a smooth transition of the light beam. In an exemplary embodiment, the fourth lens has a positive optical focal length. By making the optical lens satisfy the above conditional formula and controlling the effective focal length of the fourth lens, the light from the third lens can be received and converged, and a smooth transition of the light beam can be achieved, thereby reducing light sensitivity, which is beneficial to improving the resolution of the optical lens. Preferably, the optical lens may further satisfy: 1≤|F4 / F|≤12, thereby achieving high resolution of the optical lens.

[0054] In an exemplary embodiment, the optical lens may satisfy: 0<|F5 / F|≤16. In an exemplary embodiment, the fifth lens has a negative optical power. By making the optical lens satisfy the above conditional formula, the light from the front optical system can be diffused, the degree of light deflection can be reduced, and the resolution ability of the optical lens can be improved. In an exemplary embodiment, the fifth lens has a positive optical power. By making the optical lens satisfy the above conditional formula, the light from the front optical system can be converged, the light trend can be smoothly transitioned, and it is beneficial to improve the image quality of the optical lens. Preferably, the optical lens can further satisfy: 1≤|F5 / F|≤12, so as to achieve high resolution of the optical lens.

[0055] In an exemplary embodiment, the optical lens may satisfy: 0<|R1 / TTL|≤5. In an exemplary embodiment, the first side surface of the first lens is a convex surface. By making the optical lens satisfy the above conditional formula, the rear optical system can have a larger light receiving surface, thereby expanding the physical aperture of the aperture, achieving a larger amount of light entering, and facilitating increasing the illumination of the picture. In an exemplary embodiment, the first side surface of the first lens is a concave surface. By making the optical lens satisfy the above conditional formula, the effect of diverging light can be achieved, thereby increasing the incident angle of light incident at a large angle, thereby increasing the deflection angle of light in the lens, and facilitating collecting as much light as possible, thereby increasing the amount of light entering. Preferably, the optical lens may further satisfy: 0.3≤|R1 / TTL|≤3, thereby achieving a high luminous flux of the optical lens.

[0056] In an exemplary embodiment, the optical lens may satisfy: -1≤R3 / TTL≤-0.1. In an exemplary embodiment, the second lens has a negative optical power, and its first side surface is a concave surface. By making the optical lens satisfy the above conditional formula, it is beneficial to properly diverge the light, thereby increasing the amount of light entering, reducing the front port diameter, and thus realizing the miniaturization of the optical lens. Preferably, the optical lens may further satisfy: -0.4≤R3 / TTL≤-0.2, realizing the miniaturization of the optical lens.

[0057] In an exemplary embodiment, the optical lens may satisfy: -1≤R4 / TTL≤-0.1. In an exemplary embodiment, the second side surface of the second lens may be a convex surface. By making the optical lens satisfy the above conditional formula and controlling the radius of curvature of the second side surface of the second lens to be a negative value, the divergent light passing through the first side surface of the second lens may be deflected inward, which is beneficial to reducing the rear port diameter, thereby enabling miniaturization of the optical lens. Preferably, the optical lens may further satisfy: -0.6≤R4 / TTL≤-0.2, thereby enabling miniaturization of the optical lens.

[0058] In an exemplary embodiment, the optical lens may satisfy: 0<|R7 / TTL|≤6. In an exemplary embodiment, the first side surface of the fourth lens is a convex surface, and the radius of curvature of the first side surface of the fourth lens is positive. By making the optical lens satisfy the above conditional formula, the light can be smoothly converged to the rear optical system, which is beneficial to reducing the total optical length of the optical lens. In an exemplary embodiment, the first side surface of the fourth lens is a concave surface, and the radius of curvature of the first side surface of the fourth lens is negative. By making the optical lens satisfy the above conditional formula, it is beneficial to increase the amount of light entering. Preferably, the optical lens may further satisfy: 0.2≤|R7 / TTL|≤3, so as to achieve miniaturization or high luminous flux of the optical lens.

[0059] In an exemplary embodiment, the optical lens may satisfy: 0<|R8 / TTL|≤12. In an exemplary embodiment, the second side surface of the fourth lens is a concave surface. By making the optical lens satisfy the above conditional formula, the light can enter the rear optical system as smoothly as possible, which is conducive to achieving low sensitivity of the optical lens and improving the resolution of the optical lens. In an exemplary embodiment, the second side surface of the fourth lens is a convex surface. By making the optical lens satisfy the above conditional formula, the effect of converging light can be achieved, which is conducive to correcting the aberration of the optical lens and improving the resolution of the optical lens. Preferably, the optical lens may further satisfy: 0.3≤|R8 / TTL|≤8 to achieve high resolution of the optical lens.

[0060] In an exemplary embodiment, the optical lens may satisfy: 0.02≤R9 / TTL≤5. In an exemplary embodiment, the first side surface of the fifth lens is a convex surface. By making the optical lens satisfy the above conditional formula and controlling the curvature radius value of the first side surface of the fifth lens, the light received through the fourth lens may be deflected inward, which is beneficial to reducing the rear port diameter. Preferably, the optical lens may further satisfy: 0.05≤R9 / TTL≤2, so as to realize the miniaturization of the optical lens.

[0061] In an exemplary embodiment, the optical lens may satisfy: 0.6 ≥ R10 / TTL ≥ 0.1. In an exemplary embodiment, the second side surface of the fifth lens is a concave surface. By making the optical lens satisfy the above conditional formula and controlling the curvature radius value of the fifth lens, the light can be appropriately diverged, which is conducive to making the light smoothly transition to the rear optical system and improving the resolution of the optical lens. Preferably, the optical lens may further satisfy: 0.4 ≥ R10 / TTL ≥ 0.1, so as to achieve high resolution of the optical lens.

[0062] In an exemplary embodiment, the optical lens may satisfy: -0.1≤(H / 2-F*θ / 2) / (F*θ / 2)≤0.1. By making the optical lens satisfy the above conditional formula, the difference between the ideal image height and the actual image height corresponding to the maximum field angle of the optical lens can be small under the same field angle of the lens in the related art, so as to reduce the lens distortion. Preferably, the optical lens may further satisfy: -0.05≤(H / 2-F*θ / 2) / (F*θ / 2)≤0.05, so as to achieve small distortion of the optical lens.

[0063] In an exemplary embodiment, the optical lens may satisfy: 0.5≤D / D10≤5. By making the optical lens satisfy the above conditional formula, the optical lens front end aperture is close to the rear end aperture, thereby reducing the spacing distance (such as air spacing) between the transmitting and receiving lenses along the optical axis, thereby reducing the volume of the entire module. Preferably, the optical lens may further satisfy: 1≤D / D10≤3, thereby achieving a small aperture of the optical lens.

[0064] In an exemplary embodiment, the optical lens may satisfy: 1≤D / H≤6. By making the optical lens satisfy the above conditional formula, the front effective aperture of the optical lens can be smaller under the condition of ensuring the same image height as the lens imaging surface in the related art, which is beneficial to reduce the spacing distance between the transmitting and receiving lenses along the optical axis, thereby reducing the volume of the entire module. Preferably, the optical lens may further satisfy: 2≤D / H≤4, so as to achieve a small aperture of the optical lens.

[0065] In an exemplary embodiment, the optical lens may satisfy: 0.27≤T23 / TTL≤0.4. In an exemplary embodiment, the second lens has a negative optical power, so that the second lens can diverge optically. By making the optical lens satisfy the above conditional formula, the spacing distance (for example, air spacing) between the second lens and the third lens along the optical axis can be made larger, so that the light is relatively smooth, thereby reducing the light sensitivity, which is conducive to improving the resolution ability of the optical lens. Preferably, the optical lens may further satisfy: 0.27≤T23 / TTL≤0.35, so as to achieve high resolution of the optical lens.

[0066] In an exemplary embodiment, the optical lens may satisfy: 0<|R1 / F1|≤3. In an exemplary embodiment, the first lens has a negative optical focal length, and its first side surface is a convex surface. By making the optical lens satisfy the above conditional formula, the rear optical system can 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. In an exemplary embodiment, the first lens has a negative optical focal length, and its first side surface is a concave surface, which has the function of diverging light. By making the optical lens satisfy the above conditional formula, the incident angle of light incident at a large angle can be increased, thereby increasing the deflection angle of light in the lens, which is beneficial to collect light as much as possible, and thus can increase the amount of light input. Preferably, the optical lens may further satisfy: 0.1≤|R1 / F1|≤1.8, so as to achieve a high luminous flux of the optical lens.

[0067] In an exemplary embodiment, the optical lens may satisfy: 0.2≤|R2 / F1|. In an exemplary embodiment, the first lens has a negative focal length. By making the optical lens satisfy the above conditional formula, when the second side surface is convex, it can converge light, so that the rear optical system has 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; when the second side surface is concave, it can diverge light, and the incident angle of large-angle incident light can be increased, thereby increasing the deflection angle of light in the lens, which is beneficial to collect as much light as possible and increase the amount of light input to the optical lens; when the second side surface is a plane, the optical path of the light emitted from the first side surface can be increased, so that the light emitted through the first lens can be smoothly incident on the rear optical system, which is beneficial to reduce the sensitivity of the optical lens. Preferably, the optical lens may further satisfy: 0.23≤|R2 / F1|, so as to achieve a high luminous flux of the optical lens. In this embodiment, since the second side surface of the first lens may be a plane, the absolute value of the radius of curvature of the second side surface of the first lens may tend to positive infinity, and thus the value of |R2 / F1| may tend to positive infinity.

[0068] In an exemplary embodiment, the optical lens may satisfy: 0.05≤R3 / F2≤1. In an exemplary embodiment, the second lens has a negative optical power, and its first side surface is a concave surface. By making the optical lens satisfy the above conditional formula, it is beneficial to properly diffuse the light, that is, to properly diverge the light collected by the large front aperture, so that the physical aperture of the aperture is expanded, and a larger amount of light is achieved, which is beneficial to increase the illumination of the picture. Preferably, the optical lens may further satisfy: 0.1≤R3 / F2≤0.5, so as to achieve a high luminous flux of the optical lens.

[0069] In an exemplary embodiment, the optical lens may satisfy: 0.05≤R4 / F2≤2. In an exemplary embodiment, the second lens has a negative optical power, and its second side surface is a convex surface, which has the function of converging light. By making the optical lens satisfy the above conditional formula, it is possible to effectively converge the divergent light from the first side surface to reduce light sensitivity, thereby facilitating correction of aberrations and improving the resolution of the optical lens. Preferably, the optical lens may further satisfy: 0.1≤R4 / F2≤1, so as to achieve high resolution of the optical lens.

[0070] In an exemplary embodiment, the optical lens may satisfy: 0.3≤(CT1+T12+CT2+T23) / TTL≤0.6. By making the optical lens satisfy the above conditional formula, the thickness of each lens from the first lens to the third lens and the spacing distance between the lenses may be larger, which is beneficial to reduce light sensitivity and improve the resolution of the optical lens. Preferably, the optical lens may further satisfy: 0.4≤(CT1+T12+CT2+T23) / TTL≤0.48, so as to achieve high resolution of the optical lens.

[0071] In an exemplary embodiment, the optical lens may satisfy: 0.2≤R9 / (CT5+R10)≤3. In an exemplary embodiment, the fifth lens is in a meniscus shape as a whole, and its first side surface is a convex surface. By making the optical lens satisfy the above conditional formula, as much light as possible can be collected to enter the rear optical system; in an exemplary embodiment, the fifth lens is in a meniscus shape as a whole, and its second side surface is a concave surface. By making the optical lens satisfy the above conditional formula, the light can enter the rear optical system as smoothly as possible, which is beneficial to reduce the sensitivity of the system and improve the resolution of the optical lens. Preferably, the optical lens may further satisfy: 0.3≤R9 / (CT5+R10)≤2.6 to achieve high resolution of the optical lens.

[0072] In an exemplary embodiment, the optical lens may satisfy: 1.52° / mm≤FOV / F≤2.18° / mm. By making the optical lens satisfy the above conditional formula and controlling the maximum field angle and the total effective focal length value of the optical lens, the lens may be able to achieve telephoto measurement of long distances. Preferably, the optical lens may further satisfy: 1.7° / mm≤FOV / F≤2° / mm, which is conducive to achieving the telephoto of the optical lens.

[0073] In an exemplary embodiment, the optical lens may satisfy: 0<T12 / TTL≤0.15. In an exemplary embodiment, both the first lens and the second lens have negative optical power and have the function of diverging light. By making the optical lens satisfy the above conditional formula, the distance between the first lens and the second lens along the optical axis can be made larger, so that the light is relatively gentle, thereby reducing the light sensitivity, which is conducive to improving the resolution ability of the optical lens. Preferably, the optical lens may further satisfy: 0.03≤T12 / TTL≤0.1, so as to achieve high resolution of the optical lens.

[0074] In an exemplary embodiment, the optical lens may satisfy: 0.77≤Φ345 / Φ≤1.98. By making the optical lens satisfy the above conditional formula and controlling the combined optical power of the third lens, the fourth lens and the fifth lens, the light diverged by the second lens can be smoothly converged onto the imaging surface under the action of the third lens, the fourth lens and the fifth lens, thereby reducing the sensitivity of the optical lens and improving the resolution of the optical lens. Preferably, the optical lens may further satisfy: 0.87≤Φ345 / Φ≤0.98, to achieve high resolution of the optical lens.

[0075] In an exemplary embodiment, the optical lens may satisfy: -0.73≤Φ12 / Φ<0. By making the optical lens satisfy the above conditional formula, the combined optical power of the first lens and the second lens is controlled, so that the light can be slowly and smoothly diffused under the action of the first lens and the second lens, which helps to achieve a smooth transition of the light beam, thereby reducing the light sensitivity and improving the resolution of the optical lens. Preferably, the optical lens may further satisfy: -0.53≤Φ12 / Φ≤-0.23, so as to achieve high resolution of the optical lens.

[0076] In an exemplary embodiment, the optical lens may satisfy: 0.2≤F / F3+F / F4+F / F5≤1.3, wherein F is the total effective focal length of the optical 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 making the optical lens satisfy the above conditional formula, the effective focal length values ​​of the third lens, the fourth lens, and the fifth lens are controlled, so that the light diverged by the second lens can be smoothly converged onto the imaging surface under the action of the third lens, the fourth lens, and the fifth lens, thereby reducing the sensitivity of the lens and improving the resolution of the optical lens. Preferably, the optical lens may further satisfy: 0.49≤F / F3+F / F4+F / F5≤1, thereby achieving high resolution of the optical lens.

[0077] In an exemplary embodiment, the optical lens may satisfy: -0.72≤F / F1+F / F2≤-0.02. By making the optical lens satisfy the above conditional formula, the effective focal length of the first lens and the second lens is controlled, so that the light can be slowly and smoothly diffused under the action of the first lens and the second lens, which helps to achieve a smooth transition of the light beam, reduce light sensitivity, and improve the resolution of the optical lens. Preferably, the optical lens may further satisfy: -0.52≤F / F1+F / F2≤-0.22, so as to achieve high resolution of the optical lens.

[0078] In an exemplary embodiment, the optical lens may satisfy: 0.05≤(T34+T45+BFL) / TTL≤0.43. In this embodiment, light is gradually converged to the imaging surface through the third lens, the fourth lens and the fifth lens. By making the optical lens satisfy the above conditional formula, controlling the spacing distance between the third lens and the fourth lens along the optical axis, the spacing distance between the fourth lens and the fifth lens along the optical axis, and the spacing distance from the fifth lens to the imaging surface along the optical axis, the light can be smoothed to achieve high resolution of the optical lens. Preferably, the optical lens may further satisfy: 0.1≤(T34+T45+BFL) / TTL≤0.31 to achieve high resolution of the optical lens.

[0079] In an exemplary embodiment, the optical lens may satisfy: 1.5≤F / H≤2.1. By making the optical lens satisfy the above conditional formula, the total effective focal length of the optical lens and the image height corresponding to the maximum field of view angle are controlled within a certain range, which is conducive to achieving long-focus and long-distance detection. Preferably, the optical lens may further satisfy: 1.7≤F / H≤1.9, which is conducive to achieving the long focus and high resolution of the optical lens.

[0080] In an exemplary embodiment, the optical lens may satisfy: 0.02≤T23 / F3≤1.2. By making the optical lens satisfy the above conditional formula and controlling the distance between the second lens and the third lens along the optical axis to be larger, the light can enter the third lens more smoothly and be converged by the third lens, thereby reducing the light sensitivity and improving the resolution of the optical lens. Preferably, the optical lens may further satisfy: 0.27≤T23 / F3≤0.91, which is conducive to achieving high resolution of the optical lens.

[0081] In an exemplary embodiment, the optical lens may satisfy: -0.7≤T23 / F2≤0.01. In an exemplary embodiment, the second lens has a negative optical power and has the function of diverging light. By making the optical lens satisfy the above conditional formula and controlling the distance between the second lens and the third lens along the optical axis to be larger, the light can be smoothed, thereby reducing light sensitivity, which is beneficial to improving the resolution of the optical lens. Preferably, the optical lens may further satisfy: -0.49≤T23 / F2≤-0.13, which is beneficial to achieving high resolution of the optical lens.

[0082] 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 with different wavelengths, and the protective glass may prevent the elements (e.g., chip) on the second side of the optical lens from being damaged.

[0083] In an exemplary embodiment, the first to fifth lenses may be glass lenses or plastic lenses. The present application does not specifically limit the specific number of glass lenses and plastic 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 to fifth lenses can all be glass aspherical lenses. In applications where temperature stability requirements are lower, the first to sixth lenses in the optical lens can also be made of plastic. Making optical lenses with plastic can effectively reduce production costs. Of course, the first to fifth lenses in the optical lens can also be made of a combination of plastic and glass.

[0084] According to the above-mentioned embodiment of the present application, the optical lens has at least one beneficial effect of small aperture, high luminous flux, miniaturization, high resolution, telephoto, small distortion, etc. through the reasonable setting of parameters such as lens shape and optical focal length.

[0085] However, it should be understood by those skilled in the art that, without departing from the technical solution claimed in the present application, the number of lenses constituting the lens can be changed to obtain the various results and advantages described in this specification. For example, although five lenses are described as an example in the embodiment, the optical lens is not limited to including five lenses. If necessary, the optical lens may also include other numbers of lenses. The following further describes a specific embodiment of the optical lens applicable to the above-mentioned embodiment with reference to the accompanying drawings. Example 1

[0086] The following reference Figure 1 An optical lens according to Embodiment 1 of the present application is described. Figure 1 A schematic structural diagram of an optical lens according to Example 1 of the present application is shown.

[0087] like Figure 1 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis.

[0088] The first lens L1 has negative refractive power, a first side surface S1 of the first lens L1 is a concave surface, and a second side surface S2 of the first lens L1 is a convex surface.

[0089] The second lens L2 has negative refractive power, and its first side surface S3 is a concave surface, and its second side surface S4 is a convex surface.

[0090] The third lens L3 has positive refractive power, and its first side surface S5 is a convex surface, and its second side surface S6 is a concave surface.

[0091] The fourth lens L4 has positive refractive power, and its first side surface S7 is convex, and its second side surface S8 is concave.

[0092] The fifth lens L5 has negative refractive power, and its first side surface S9 is convex, and its second side surface S10 is concave.

[0093] The optical lens may further include a stop STO, and the stop STO may be disposed between the third lens L3 and the fourth lens L4.

[0094] Optionally, the optical lens may further include a filter having a first side surface S11 and a second side surface S12 , and a protective glass having a first side surface S13 and a second side surface S14 .

[0095] The optical lens provided in this application can be used as, for example, a camera lens or a laser radar receiving end lens. In this case, Figure 1IMA represents the imaging surface, and the light from the object passes through the surfaces S1 to S14 in sequence and is finally imaged on the imaging surface IMA disposed on the second side, wherein an image sensor chip is disposed on the imaging surface. It should be understood that the optical lens provided in the present application can also be used as, for example, a projection lens or a laser radar transmitting end lens. In this case, Figure 1 Here, IMA represents a light source surface, and light from the light source surface passes through the surfaces S14 to S1 in sequence and is finally projected onto a projection surface (not shown) disposed on the first side.

[0096] Table 1 shows the curvature radius R, thickness / distance, refractive index Nd, and Abbe number Vd of each lens of the optical lens of Example 1.

[0097] Table 1

[0098]

[0099] In this embodiment, the first side surface S9 and the second side surface S10 of the fifth lens L5 may be aspherical surfaces, and the surface shape of each aspherical lens may be defined by but not limited to the following aspherical surface formula:

[0100] (1)

[0101] Wherein, x is the distance vector height from the vertex of the aspherical surface when the aspherical surface is at a height of h along the optical axis; c is the paraxial curvature of the aspherical surface, c=1 / R (i.e., the paraxial curvature c is the reciprocal of the curvature radius R in Table 1 above); k is the cone coefficient; Ai is the correction coefficient of the i-th order of the aspherical surface. Table 2 below gives the cone coefficient k and the high-order coefficients A4, A6, A8, A10, A12, A14 and A16 that can be used for each aspherical mirror surface S4 and S5 in Example 1.

[0102] Table 2

[0103]

[0104] In this embodiment, in terms of MTF, the MTF (Modulation Transfer Function) value of the optical lens at a spatial frequency of 25 lp / mm (25 lines / mm) exceeds 0.59, wherein MTF describes the ability of the optical lens to "restore" the object space in the image space, and the abscissa of the MTF graph is the spatial frequency. According to the above values, the optical lens provided in this embodiment has a high resolution capability. Example 2

[0105] The following reference Figure 2 The optical lens according to Embodiment 2 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Figure 2A schematic structural diagram of an optical lens according to Embodiment 2 of the present application is shown.

[0106] like Figure 2 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis. The surface shapes and positive and negative optical focal lengths of the optical lens of Example 2 are the same as those of Example 1. The aperture STO can be disposed between the third lens L3 and the fourth lens L4.

[0107] Table 3 shows the parameters of each lens of the optical lens of Example 2. Table 4 shows the parameters of the aspheric lens that can be used in Example 2, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in Example 1 above.

[0108] Table 3

[0109]

[0110] Table 4

[0111]

[0112] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 50 lp / mm exceeds 0.53. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Example 3

[0113] The following reference Figure 3 The optical lens according to Embodiment 3 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Figure 3 A schematic structural diagram of an optical lens according to Example 3 of the present application is shown.

[0114] like Figure 3 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis. The surface shapes and positive and negative optical focal lengths of the optical lens of Example 3 are the same as those of Example 1. The aperture STO can be disposed between the third lens L3 and the fourth lens L4.

[0115] Table 5 shows the parameters of each lens of the optical lens of Example 3. Table 6 shows the parameters of the aspheric lens that can be used in Example 3, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in Example 1 above.

[0116] Table 5

[0117]

[0118] Table 6

[0119]

[0120] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 25lp / mm exceeds 0.50. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Example 4

[0121] The following reference Figure 4 The optical lens according to Embodiment 4 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Figure 4 A schematic structural diagram of an optical lens according to Example 4 of the present application is shown.

[0122] like Figure 4 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in order from the first side to the second side along the optical axis. The difference in the surface shape and the positive and negative optical power of the optical lens of Example 4 and Example 1 is that the second side surface S2 of the first lens L1 of Example 4 is a concave surface. The aperture STO can be set between the third lens L3 and the fourth lens L4.

[0123] Table 7 shows the parameters of each lens of the optical lens of Example 4. Table 8 shows the parameters of the aspheric lens that can be used in Example 4, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in Example 1 above.

[0124] Table 7

[0125]

[0126] Table 8

[0127]

[0128] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 25lp / mm exceeds 0.56. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Example 5

[0129] The following reference Figure 5 The optical lens according to Embodiment 5 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Figure 5 A schematic structural diagram of an optical lens according to Example 5 of the present application is shown.

[0130] like Figure 5As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in order from the first side to the second side along the optical axis. The difference in the surface shape and the positive and negative optical power of the optical lens of Example 5 and Example 1 is that the second side surface S6 of the third lens L3 of Example 5 is a convex surface. The aperture STO can be set between the third lens L3 and the fourth lens L4.

[0131] Table 9 shows the parameters of each lens of the optical lens of Example 5. Table 10 shows the parameters of the aspheric lens that can be used in Example 5, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in Example 1 above.

[0132] Table 9

[0133]

[0134] Table 10

[0135]

[0136] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 25lp / mm exceeds 0.70. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Example 6

[0137] The following reference Figure 6 The optical lens according to Embodiment 6 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Figure 6 A schematic structural diagram of an optical lens according to Example 6 of the present application is shown.

[0138] like Figure 6 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis. The surface shapes and the positive and negative optical focal lengths of the optical lenses of Example 6 and Example 5 are the same. The aperture STO can be set between the third lens L3 and the fourth lens L4.

[0139] Table 11 shows the parameters of each lens of the optical lens of Example 6. Table 12 shows the parameters of the aspheric lenses that can be used in Example 6, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in Example 1 above.

[0140] Table 11

[0141]

[0142] Table 12

[0143]

[0144] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 25lp / mm exceeds 0.72. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Example 7

[0145] The following reference Figure 7 An optical lens according to Embodiment 7 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Figure 7 A schematic structural diagram of an optical lens according to Example 7 of the present application is shown.

[0146] like Figure 7 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in order from the first side to the second side along the optical axis. The difference in the surface type and the positive and negative optical power of the optical lens of Example 7 and Example 1 is that the second side surface S2 of the first lens L1 of Example 7 is a concave surface, and the second side surface S6 of the third lens L3 is a convex surface. The aperture STO can be set between the third lens L3 and the fourth lens L4.

[0147] Table 13 shows the parameters of each lens of the optical lens of Example 7. Table 14 shows the parameters of the aspheric lenses that can be used in Example 7, wherein the surface shapes of each aspheric surface can be defined by the formula (1) given in Example 1 above.

[0148] Table 13

[0149]

[0150] Table 14

[0151]

[0152] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 25lp / mm exceeds 0.65. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Example 8

[0153] The following reference Figure 8 The optical lens according to Embodiment 8 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Figure 8 A schematic structural diagram of an optical lens according to Example 8 of the present application is shown.

[0154] like Figure 8As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis. The surface shapes and the positive and negative optical focal lengths of the optical lenses of Example 8 and Example 7 are the same. The aperture STO can be set between the third lens L3 and the fourth lens L4.

[0155] Table 15 shows the parameters of each lens of the optical lens of Example 8. Table 16 shows the parameters of the aspheric lenses that can be used in Example 8, wherein the surface shapes of each aspheric surface can be defined by the formula (1) given in Example 1 above.

[0156] Table 15

[0157]

[0158] Table 16

[0159]

[0160] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 25lp / mm exceeds 0.57. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Example 9

[0161] The following reference Fig. 9 The optical lens according to Embodiment 9 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig. 9 A schematic structural diagram of an optical lens according to Example 9 of the present application is shown.

[0162] like Fig. 9 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis. The surface shapes and positive and negative optical powers of the optical lens of Example 9 are the same as those of Example 1. The aperture STO can be set between the third lens L3 and the fourth lens L4.

[0163] Table 17 shows the parameters of each lens of the optical lens of Example 9. Table 18 shows the parameters of the aspheric lenses that can be used in Example 9, wherein the surface shapes of each aspheric surface can be defined by the formula (1) given in Example 1 above.

[0164] Table 17

[0165]

[0166] Table 18

[0167]

[0168] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 50 lp / mm exceeds 0.60. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Example 10

[0169] The following reference Fig.10 The optical lens according to Embodiment 10 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.10 A schematic structural diagram of an optical lens according to Example 10 of the present application is shown.

[0170] like Fig.10 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis. The surface shapes and positive and negative optical powers of the optical lens of Example 10 are the same as those of Example 1. The aperture STO can be disposed between the third lens L3 and the fourth lens L4.

[0171] Table 19 shows the parameters of each lens of the optical lens of Example 10. Table 20 shows the parameters of the aspheric lens that can be used in Example 10, wherein each aspheric surface shape can be defined by the formula (1) given in Example 1 above.

[0172] Table 19

[0173]

[0174] Table 20

[0175]

[0176] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 25lp / mm exceeds 0.69. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Embodiment 11

[0177] The following reference Fig.11 An optical lens according to Embodiment 11 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.11 A schematic structural diagram of an optical lens according to Example 11 of the present application is shown.

[0178] like Fig.11As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in order from the first side to the second side along the optical axis. The difference in the surface type and the positive and negative optical power of the optical lens of Example 11 and Example 1 is that the first side surface S1 of the first lens L1 of Example 11 is a convex surface, and the second side surface S2 is a concave surface. The aperture STO can be set between the third lens L3 and the fourth lens L4.

[0179] Table 21 shows the parameters of each lens of the optical lens of Example 11. Table 22 shows the parameters of the aspheric lenses that can be used in Example 11, wherein the surface shapes of each aspheric surface can be defined by the formula (1) given in Example 1 above.

[0180] Table 21

[0181]

[0182] Table 22

[0183]

[0184] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 25lp / mm exceeds 0.39. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Example 12

[0185] The following reference Fig.12 The optical lens according to Embodiment 12 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.12 A schematic structural diagram of an optical lens according to Example 12 of the present application is shown.

[0186] like Fig.12 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis. The surface shapes and the positive and negative optical focal lengths of the optical lenses of Example 12 and Example 11 are the same. The aperture STO can be set between the second lens L2 and the third lens L3.

[0187] Table 23 shows the parameters of each lens of the optical lens of Example 12. Table 24 shows the parameters of the aspheric lenses that can be used in Example 12, wherein the surface shapes of each aspheric surface can be defined by the formula (1) given in Example 1 above.

[0188] Table 23

[0189]

[0190] Table 24

[0191]

[0192] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 25lp / mm exceeds 0.35. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Embodiment 13

[0193] The following reference Fig.13 The optical lens according to Embodiment 13 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.13 A schematic structural diagram of an optical lens according to Example 13 of the present application is shown.

[0194] like Fig.13 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis. The difference between the surface shapes and the positive and negative optical powers of the optical lenses of Example 13 and Example 1 is that the second side surface S6 of the third lens L3 of Example 13 is a convex surface. The aperture STO can be set between the second lens L2 and the third lens L3. Table 25 shows the parameters of each lens of the optical lens of Example 13. Table 26 shows the parameters of the aspheric lenses that can be used in Example 13, wherein the surface shapes of each aspheric surface can be defined by the formula (1) given in the above Example 1.

[0195] Table 25

[0196]

[0197] Table 26

[0198]

[0199] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 25lp / mm exceeds 0.75. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Embodiment 14

[0200] The following reference Fig.14 The optical lens according to Embodiment 14 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.14 A schematic structural diagram of an optical lens according to Example 14 of the present application is shown.

[0201] like Fig.14As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in order from the first side to the second side along the optical axis. The difference between the surface type and the positive and negative optical power of the optical lens of Example 14 and Example 1 is that the first side surface S1 of the first lens L1 of Example 14 is a convex surface, the second side surface S2 is a concave surface, the first side surface S5 of the third lens L3 is a concave surface, and the second side surface S6 is a convex surface. The aperture STO can be set between the third lens L3 and the fourth lens L4.

[0202] Table 27 shows the parameters of each lens of the optical lens of Example 14. Table 28 shows the parameters of the aspheric lenses that can be used in Example 14, wherein the surface shapes of each aspheric surface can be defined by the formula (1) given in Example 1 above.

[0203] Table 27

[0204]

[0205] Table 28

[0206]

[0207] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 25lp / mm exceeds 0.28. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Embodiment 15

[0208] The following reference Fig.15 The optical lens according to Embodiment 15 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.15 A schematic structural diagram of an optical lens according to Example 15 of the present application is shown.

[0209] like Fig.15 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in order from the first side to the second side along the optical axis. The difference between the surface shapes and the positive and negative optical power of the optical lens of Example 15 and Example 1 is that the fifth lens L5 of Example 15 has positive optical power. The aperture STO can be set between the third lens L3 and the fourth lens L4.

[0210] Table 29 shows the parameters of each lens of the optical lens of Example 15. Table 30 shows the parameters of the aspheric lens that can be used in Example 15, wherein each aspheric surface shape can be defined by the formula (1) given in Example 1 above.

[0211] Table 29

[0212]

[0213] Table 30

[0214]

[0215] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 50 lp / mm exceeds 0.77. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Example 16

[0216] The following reference Fig.16 The optical lens according to Embodiment 16 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.16 A schematic structural diagram of an optical lens according to Example 16 of the present application is shown.

[0217] like Fig.16 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in order from the first side to the second side along the optical axis. The difference between the surface shapes and the positive and negative optical power of the optical lens of Example 16 and Example 1 is that the second side surface S2 of the first lens L1 of Example 16 is a concave surface, and the fifth lens L5 has a positive optical power. The aperture STO can be set between the third lens L3 and the fourth lens L4.

[0218] Table 31 shows the parameters of each lens of the optical lens of Example 16. Table 32 shows the parameters of the aspheric lenses that can be used in Example 16, wherein the surface shapes of each aspheric surface can be defined by the formula (1) given in Example 1 above.

[0219] Table 31

[0220]

[0221] Table 32

[0222]

[0223] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 50 lp / mm exceeds 0.52. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Embodiment 17

[0224] The following reference Fig.17 The optical lens according to Embodiment 17 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.17A schematic structural diagram of an optical lens according to Example 17 of the present application is shown.

[0225] like Fig.17 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis. The surface shapes and the positive and negative optical focal lengths of the optical lenses of Example 17 and Example 16 are the same. The aperture STO can be set between the third lens L3 and the fourth lens L4.

[0226] Table 33 shows the parameters of each lens of the optical lens of Example 17. Table 34 shows the parameters of the aspheric lenses that can be used in Example 17, wherein the surface shapes of each aspheric surface can be defined by the formula (1) given in Example 1 above.

[0227] Table 33

[0228]

[0229] Table 34

[0230]

[0231] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 50 lp / mm exceeds 0.61. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Embodiment 18

[0232] The following reference Fig.18 The optical lens according to Embodiment 18 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.18 A schematic structural diagram of an optical lens according to Example 18 of the present application is shown.

[0233] like Fig.18 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in order from the first side to the second side along the optical axis. The difference between the surface type and the positive and negative optical power of the optical lens of Example 18 and Example 1 is that the second side surface S6 of the third lens L3 of Example 18 is a convex surface, and the fifth lens L5 has a positive optical power. The aperture STO can be set between the third lens L3 and the fourth lens L4.

[0234] Table 35 shows the parameters of each lens of the optical lens of Example 18. Table 36 shows the parameters of the aspheric lens that can be used in Example 18, wherein each aspheric surface shape can be defined by the formula (1) given in the above Example 1.

[0235] Table 35

[0236]

[0237] Table 36

[0238]

[0239] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 50 lp / mm exceeds 0.73. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Embodiment 19

[0240] The following reference Fig.19 The optical lens according to Embodiment 19 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.19 A schematic structural diagram of an optical lens according to Example 19 of the present application is shown.

[0241] like Fig.19 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis. The surface shapes and optical focal lengths of the optical lenses of Example 19 and Example 18 are the same in positive and negative directions. The stop STO can be set between the third lens L3 and the fourth lens L4. Table 37 shows the parameters of the optical lens of Example 19. Table 38 shows the parameters of the aspheric lenses that can be used in Example 19, wherein the surface shapes of the aspheric lenses can be defined by the formula (1) given in the above Example 1.

[0242] Table 37

[0243]

[0244] Table 38

[0245]

[0246] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 50 lp / mm exceeds 0.74. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Embodiment 20

[0247] The following reference Fig. 20 An optical lens according to Embodiment 20 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig. 20 A schematic structural diagram of an optical lens according to Example 20 of the present application is shown.

[0248] like Fig. 20As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in order from the first side to the second side along the optical axis. The difference between the surface types and the positive and negative optical powers of the optical lenses of Example 20 and Example 1 is that the second side surface S2 of the first lens L1 of Example 20 is a concave surface, the second side surface S6 of the third lens L3 is a convex surface, and the fifth lens L5 has a positive optical power. The aperture STO can be set between the third lens L3 and the fourth lens L4.

[0249] Table 39 shows the parameters of each lens of the optical lens of Example 20. Table 40 shows the parameters of the aspheric lenses that can be used in Example 20, wherein each aspheric surface shape can be defined by the formula (1) given in Example 1 above.

[0250] Table 39

[0251]

[0252] Table 40

[0253]

[0254] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 50 lp / mm exceeds 0.64. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Embodiment 21

[0255] The following reference Fig.21 An optical lens according to Embodiment 21 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.21 A schematic structural diagram of an optical lens according to Example 21 of the present application is shown.

[0256] like Fig.21 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis. The surface shapes and optical focal lengths of the optical lenses of Example 21 and Example 20 are the same in positive and negative directions. The aperture STO can be set between the third lens L3 and the fourth lens L4. Table 41 shows the parameters of the optical lens of Example 21. Table 42 shows the parameters of the aspheric lenses that can be used in Example 21, wherein the surface shapes of the aspheric lenses can be defined by the formula (1) given in the above Example 1.

[0257] Table 41

[0258]

[0259] Table 42

[0260]

[0261] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 50 lp / mm exceeds 0.55. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Embodiment 22

[0262] The following reference Fig. 22 An optical lens according to Embodiment 22 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig. 22 A schematic structural diagram of an optical lens according to Example 22 of the present application is shown.

[0263] like Fig. 22 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in order from the first side to the second side along the optical axis. The difference between the surface shapes and the positive and negative optical power of the optical lens of Example 22 and Example 1 is that the fifth lens L5 of Example 22 has a positive optical power. The aperture STO can be set between the third lens L3 and the fourth lens L4.

[0264] Table 43 shows the parameters of each lens of the optical lens of Example 22. Table 44 shows the parameters of the aspheric lenses that can be used in Example 22, wherein the surface shapes of each aspheric surface can be defined by the formula (1) given in Example 1 above.

[0265] Table 43

[0266]

[0267] Table 44

[0268]

[0269] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 50 lp / mm exceeds 0.77. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Embodiment 23

[0270] The following reference Fig.23 An optical lens according to Embodiment 23 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.23 A schematic structural diagram of an optical lens according to Example 23 of the present application is shown.

[0271] like Fig.23As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in order from the first side to the second side along the optical axis. The difference between the surface types and the positive and negative optical powers of the optical lenses of Example 23 and Example 1 is that the first side surface S1 of the first lens L1 of Example 23 is a convex surface, the second side surface S2 is a concave surface, and the fifth lens L5 has a positive optical power. The aperture STO can be set between the third lens L3 and the fourth lens L4.

[0272] Table 45 shows the parameters of each lens of the optical lens of Example 23. Table 46 shows the parameters of the aspheric lens that can be used in Example 23, wherein each aspheric surface shape can be defined by the formula (1) given in the above Example 1.

[0273] Table 45

[0274]

[0275] Table 46

[0276]

[0277] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 50 lp / mm exceeds 0.51. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Embodiment 24

[0278] The following reference Fig.24 An optical lens according to Embodiment 24 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.24 A schematic structural diagram of an optical lens according to Example 24 of the present application is shown.

[0279] like Fig.24 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in order from the first side to the second side along the optical axis. The difference between the surface types and the positive and negative optical powers of the optical lenses of Example 24 and Example 1 is that the first side surface S1 of the first lens L1 of Example 24 is a convex surface, the second side surface S2 is a concave surface, the first side surface S5 of the third lens L3 is a concave surface, the second side surface S6 is a convex surface, and the fifth lens L5 has a positive optical power. The aperture STO can be set between the third lens L3 and the fourth lens L4.

[0280] Table 47 shows the parameters of each lens of the optical lens of Example 24. Table 48 shows the parameters of the aspheric lens that can be used in Example 24, wherein each aspheric surface shape can be defined by the formula (1) given in the above Example 1.

[0281] Table 47

[0282]

[0283] Table 48

[0284]

[0285] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 25lp / mm exceeds 0.64. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Embodiment 25

[0286] The following reference Fig.25 An optical lens according to Embodiment 25 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.25 A schematic structural diagram of an optical lens according to Example 25 of the present application is shown.

[0287] like Fig.25 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis. The only difference between the surface types and the positive and negative optical powers of the optical lenses of Example 25 and Example 1 is that the first side surface S1 of the first lens L1 of Example 25 is convex, the second side surface S2 is concave, the second side surface S6 of the third lens L3 is convex, and the fifth lens L5 has positive optical power. The aperture STO can be set between the third lens L3 and the fourth lens L4. Table 49 shows the parameters of each lens of the optical lens of Example 25. Table 50 shows the parameters of the aspheric lenses that can be used in Example 25, wherein the surface types of each aspheric surface can be defined by the formula (1) given in the above Example 1.

[0288] Table 49

[0289]

[0290] Table 50

[0291]

[0292] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 25lp / mm exceeds 0.70. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Embodiment 26

[0293] The following reference Fig.26 An optical lens according to Embodiment 26 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.26 A schematic structural diagram of an optical lens according to Example 26 of the present application is shown.

[0294] like Fig.26 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in order from the first side to the second side along the optical axis. The difference between the surface types and the positive and negative optical powers of the optical lenses of Example 26 and Example 1 is that the first side surface S1 of the first lens L1 of Example 26 is a convex surface, the second side surface S2 is a concave surface, the second side surface S8 of the fourth lens L4 is a convex surface, and the fifth lens L5 has a positive optical power. The aperture STO can be set between the third lens L3 and the fourth lens L4.

[0295] Table 51 shows the parameters of each lens of the optical lens of Example 26. Table 52 shows the parameters of the aspheric lenses that can be used in Example 26, wherein the surface shapes of each aspheric surface can be defined by the formula (1) given in Example 1 above.

[0296] Table 51

[0297]

[0298] Table 52

[0299]

[0300] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 50 lp / mm exceeds 0.50. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Embodiment 27

[0301] The following reference Fig. 27 An optical lens according to Embodiment 27 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig. 27 A schematic structural diagram of an optical lens according to Example 27 of the present application is shown.

[0302] like Fig. 27 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in order from the first side to the second side along the optical axis. The difference in each surface type and positive and negative optical power of the optical lens of Example 27 and Example 1 is that the fourth lens L4 of Example 27 has a negative optical power, and the fifth lens L5 has a positive optical power. The aperture STO can be set between the third lens L3 and the fourth lens L4.

[0303] Table 53 shows the parameters of each lens of the optical lens of Example 27. Table 54 shows the parameters of the aspheric lenses that can be used in Example 27, wherein the surface shapes of each aspheric surface can be defined by the formula (1) given in Example 1 above.

[0304] Table 53

[0305]

[0306] Table 54

[0307]

[0308] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 25lp / mm exceeds 0.67. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Embodiment 28

[0309] The following reference Fig.28 An optical lens according to Example 28 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to those in Example 1 will be omitted. Fig.28 A schematic structural diagram of an optical lens according to Example 28 of the present application is shown.

[0310] like Fig.28 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis. The surface shapes and the positive and negative optical focal lengths of the optical lenses of Example 28 and Example 27 are the same. The aperture STO can be set between the third lens L3 and the fourth lens L4.

[0311] Table 55 shows the parameters of each lens of the optical lens of Example 28. Table 56 shows the parameters of the aspheric lenses that can be used in Example 28, wherein the surface shapes of each aspheric surface can be defined by the formula (1) given in Example 1 above.

[0312] Table 55

[0313]

[0314] Table 56

[0315]

[0316] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 50 lp / mm exceeds 0.52. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Embodiment 29

[0317] The following reference Fig.29 An optical lens according to Embodiment 29 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.29 A schematic structural diagram of an optical lens according to Example 29 of the present application is shown.

[0318] like Fig.29 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in order from the first side to the second side along the optical axis. The difference between the surface types and the positive and negative optical powers of the optical lenses of Example 29 and Example 1 is that the second side surface S2 of the first lens L1 of Example 27 is a concave surface, the fourth lens L4 has a negative optical power, and the fifth lens L5 has a positive optical power. The aperture STO can be set between the third lens L3 and the fourth lens L4.

[0319] Table 57 shows the parameters of each lens of the optical lens of Example 29. Table 58 shows the parameters of the aspheric lenses that can be used in Example 29, wherein the surface shapes of each aspheric surface can be defined by the formula (1) given in Example 1 above.

[0320] Table 57

[0321]

[0322] Table 58

[0323]

[0324] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 25lp / mm exceeds 0.51. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Embodiment 30

[0325] The following reference Fig.30 An optical lens according to Embodiment 30 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.30 A schematic structural diagram of an optical lens according to embodiment 30 of the present application is shown.

[0326] like Fig.30 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis. The surface shapes and the positive and negative optical focal lengths of the optical lenses of Example 30 and Example 29 are the same. The aperture STO can be set between the third lens L3 and the fourth lens L4.

[0327] Table 59 shows the parameters of each lens of the optical lens of Example 30. Table 60 shows the parameters of the aspheric lenses that can be used in Example 30, wherein each aspheric surface shape can be defined by the formula (1) given in the above Example 1.

[0328] Table 59

[0329]

[0330] Table 60

[0331]

[0332] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 25lp / mm exceeds 0.33. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Embodiment 31

[0333] The following reference Fig.31 An optical lens according to Embodiment 31 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.31 A schematic structural diagram of an optical lens according to Example 31 of the present application is shown.

[0334] like Fig.31 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in order from the first side to the second side along the optical axis. The difference between the surface types and the positive and negative optical power of the optical lenses of Example 31 and Example 1 is that the second side surface S6 of the third lens L3 of Example 31 is a convex surface, the fourth lens L4 has a negative optical power, and the fifth lens L5 has a positive optical power. The aperture STO can be set between the third lens L3 and the fourth lens L4.

[0335] Table 61 shows the parameters of each lens of the optical lens of Example 31. Table 62 shows the parameters of the aspheric lens that can be used in Example 31, wherein each aspheric surface shape can be defined by the formula (1) given in the above Example 1.

[0336] Table 61

[0337]

[0338] Table 62

[0339]

[0340] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 25lp / mm exceeds 0.68. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Embodiment 32

[0341] The following reference Fig.32 An optical lens according to Embodiment 32 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.32 A schematic structural diagram of an optical lens according to Example 32 of the present application is shown.

[0342] like Fig.32 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis. The surface shapes and the positive and negative optical focal lengths of the optical lenses of Example 32 and Example 31 are the same. The aperture STO can be set between the third lens L3 and the fourth lens L4.

[0343] Table 63 shows the parameters of each lens of the optical lens of Example 32. Table 64 shows the parameters of the aspheric lens that can be used in Example 32, wherein each aspheric surface shape can be defined by the formula (1) given in the above Example 1.

[0344] Table 63

[0345]

[0346] Table 64

[0347]

[0348] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 50 lp / mm exceeds 0.70. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Embodiment 33

[0349] The following reference Fig.33 An optical lens according to Embodiment 33 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.33 A schematic structural diagram of an optical lens according to Example 33 of the present application is shown.

[0350] like Fig.33As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in order from the first side to the second side along the optical axis. The difference between the surface types and the positive and negative optical powers of the optical lenses of Example 33 and Example 1 is that the second side surface S2 of the first lens L1 of Example 33 is a concave surface, the second side surface S6 of the third lens L3 is a convex surface, the fourth lens L4 has a negative optical power, and its first side surface S7 is a concave surface, and the fifth lens L5 has a positive optical power. The aperture STO can be set between the third lens L3 and the fourth lens L4.

[0351] Table 65 shows the parameters of each lens of the optical lens of Example 33. Table 66 shows the parameters of the aspheric lens that can be used in Example 33, wherein each aspheric surface shape can be defined by the formula (1) given in the above Example 1.

[0352] Table 65

[0353]

[0354] Table 66

[0355]

[0356] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 25lp / mm exceeds 0.08. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Embodiment 34

[0357] The following reference Fig.34 An optical lens according to Embodiment 34 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.34 A structural schematic diagram of an optical lens according to Example 34 of the present application is shown.

[0358] like Fig.34 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in order from the first side to the second side along the optical axis. The difference between the surface types and the positive and negative optical powers of the optical lenses of Example 34 and Example 1 is that the second side surface S2 of the first lens L1 of Example 34 is a concave surface, the second side surface S6 of the third lens L3 is a convex surface, the fourth lens L4 has a negative optical power, and the fifth lens L5 has a positive optical power. The aperture STO can be set between the third lens L3 and the fourth lens L4.

[0359] Table 67 shows the parameters of each lens of the optical lens of Example 34. Table 68 shows the parameters of the aspheric lens that can be used in Example 34, wherein each aspheric surface shape can be defined by the formula (1) given in the above Example 1.

[0360] Table 67

[0361]

[0362] Table 68

[0363]

[0364] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 50 lp / mm exceeds 0.53. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Embodiment 35

[0365] The following reference Fig.35 An optical lens according to Embodiment 35 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.35 A schematic structural diagram of an optical lens according to Example 35 of the present application is shown.

[0366] like Fig.35 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in order from the first side to the second side along the optical axis. The difference between the surface shapes and the positive and negative optical powers of the optical lenses of Example 35 and Example 1 is that the second side surface S2 of the first lens L1 of Example 35 is a plane, the fourth lens L4 has a negative optical power, and the fifth lens L5 has a positive optical power. The aperture STO can be set between the third lens L3 and the fourth lens L4.

[0367] Table 69 shows the parameters of each lens of the optical lens of Example 35. Table 70 shows the parameters of the aspheric lens that can be used in Example 35, wherein each aspheric surface shape can be defined by the formula (1) given in the above Example 1.

[0368] Table 69

[0369]

[0370] Table 70

[0371]

[0372] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 25lp / mm exceeds 0.45. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Embodiment 36

[0373] The following reference Fig.36An optical lens according to Embodiment 36 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.36 A schematic structural diagram of an optical lens according to Example 36 of the present application is shown.

[0374] like Fig.36 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis. The surface shapes and the positive and negative optical focal lengths of the optical lenses of Example 36 and Example 35 are the same. The aperture STO can be set between the third lens L3 and the fourth lens L4.

[0375] Table 71 shows the parameters of each lens of the optical lens of Example 36. Table 72 shows the parameters of the aspheric lenses that can be used in Example 36, wherein each aspheric surface shape can be defined by the formula (1) given in the above Example 1.

[0376] Table 71

[0377]

[0378] Table 72

[0379]

[0380] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 25lp / mm exceeds 0.56. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Embodiment 37

[0381] The following reference Fig.37 An optical lens according to Embodiment 37 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.37 A schematic structural diagram of an optical lens according to Example 37 of the present application is shown.

[0382] like Fig.37 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in order from the first side to the second side along the optical axis. The difference between the surface types and the positive and negative optical powers of the optical lenses of Example 37 and Example 1 is that the first side surface S1 of the first lens L1 of Example 37 is a convex surface, the second side surface S2 is a concave surface, the fourth lens L4 has a negative optical power, and the fifth lens L5 has a positive optical power. The aperture STO can be set between the second lens L2 and the third lens L3.

[0383] Table 73 shows the parameters of each lens of the optical lens of Example 37. Table 74 shows the parameters of the aspheric lens that can be used in Example 37, wherein each aspheric surface shape can be defined by the formula (1) given in the above Example 1.

[0384] Table 73

[0385]

[0386] Table 74

[0387]

[0388] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 25lp / mm exceeds 0.18. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Embodiment 38

[0389] The following reference Fig.38 The optical lens according to Embodiment 38 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.38 A structural schematic diagram of an optical lens according to Example 38 of the present application is shown.

[0390] like Fig.38 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis. The only difference between the surface types and the positive and negative optical powers of the optical lenses of Example 38 and Example 1 is that the first side surface S1 of the first lens L1 of Example 38 is convex, the second side surface S2 is concave, the fourth lens L4 has negative optical power, its first side surface S7 is concave, the second side surface S8 is convex, and the fifth lens L5 has positive optical power. The aperture STO can be set between the second lens L2 and the third lens L3. The aperture STO can be set between the second lens L2 and the third lens L3.

[0391] Table 75 shows the parameters of each lens of the optical lens of Example 38. Table 76 shows the parameters of the aspheric lens that can be used in Example 38, wherein each aspheric surface shape can be defined by the formula (1) given in the above Example 1.

[0392] Table 75

[0393]

[0394] Table 76

[0395]

[0396] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 25lp / mm exceeds 0.40. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Embodiment 39

[0397] The following reference Fig.39 An optical lens according to Embodiment 39 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.39 A schematic structural diagram of an optical lens according to Example 39 of the present application is shown.

[0398] like Fig.39 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in order from the first side to the second side along the optical axis. The difference between the surface types and the positive and negative optical powers of the optical lenses of Example 39 and Example 1 is that the first side surface S1 of the first lens L1 of Example 39 is convex, the second side surface S2 is concave, the fourth lens L4 has negative optical power, the first side surface S7 thereof is concave, and the fifth lens L5 has positive optical power. The aperture STO can be set between the second lens L2 and the third lens L3.

[0399] Table 77 shows the parameters of each lens of the optical lens of Example 39. Table 78 shows the parameters of the aspheric lenses that can be used in Example 39, wherein the surface shapes of each aspheric surface can be defined by the formula (1) given in the above Example 1.

[0400] Table 77

[0401]

[0402] Table 78

[0403]

[0404] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 25lp / mm exceeds 0.22. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Embodiment 40

[0405] The following reference Fig.40 An optical lens according to Embodiment 40 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.40 A schematic structural diagram of an optical lens according to embodiment 40 of the present application is shown.

[0406] like Fig.40As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in order from the first side to the second side along the optical axis. The difference between the surface types and the positive and negative optical powers of the optical lenses of Example 40 and Example 1 is that the first side surface S1 of the first lens L1 of Example 40 is convex, the second side surface S2 is concave, the second side surface S6 of the third lens L3 is convex, the fourth lens L4 has negative optical power, the first side surface S7 is concave, the second side surface S8 is convex, and the fifth lens L5 has positive optical power. The aperture STO can be set between the second lens L2 and the third lens L3.

[0407] Table 79 shows the parameters of each lens of the optical lens of Example 40. Table 80 shows the parameters of the aspheric lenses that can be used in Example 40, wherein each aspheric surface shape can be defined by the formula (1) given in Example 1 above.

[0408] Table 79

[0409]

[0410] Table 80

[0411]

[0412] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 25lp / mm exceeds 0.34. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Embodiment 41

[0413] The following reference Fig.41 An optical lens according to Embodiment 41 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.41 A schematic structural diagram of an optical lens according to Example 41 of the present application is shown.

[0414] like Fig.41 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in order from the first side to the second side along the optical axis. The difference between the surface types and the positive and negative optical powers of the optical lenses of Example 41 and Example 1 is that the first side surface S1 of the first lens L1 of Example 41 is convex, the second side surface S2 is concave, the fourth lens L4 has negative optical power, the first side surface S7 thereof is concave, and the fifth lens L5 has positive optical power. The aperture STO can be set between the second lens L2 and the third lens L3.

[0415] Table 81 shows the parameters of each lens of the optical lens of Example 41. Table 82 shows the parameters of the aspheric lens that can be used in Example 41, wherein each aspheric surface shape can be defined by the formula (1) given in the above Example 1.

[0416] Table 81

[0417]

[0418] Table 82

[0419]

[0420] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 25lp / mm exceeds 0.64. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution. Embodiment 42

[0421] The following reference Fig.42 An optical lens according to Embodiment 42 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.42 A schematic structural diagram of an optical lens according to Example 42 of the present application is shown.

[0422] like Fig.42 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in order from the first side to the second side along the optical axis. The difference between the surface types and the positive and negative optical powers of the optical lenses of Example 42 and Example 1 is that the first side surface S1 of the first lens L1 of Example 42 is a convex surface, the second side surface S2 is a concave surface, the fourth lens L4 has a negative optical power, and the fifth lens L5 has a positive optical power. The aperture STO can be set between the second lens L2 and the third lens L3.

[0423] Table 83 shows the parameters of each lens of the optical lens of Example 42. Table 84 shows the parameters of the aspheric lens that can be used in Example 42, wherein each aspheric surface shape can be defined by the formula (1) given in the above Example 1.

[0424] Table 83

[0425]

[0426] Table 84

[0427]

[0428] In this embodiment, in terms of MTF, the MTF value of the optical lens at a spatial frequency of 25lp / mm exceeds 0.62. Based on the above values, the optical lens provided by this embodiment has a relatively high resolution.

[0429] Fig.43 , Fig.44 as well as Fig.45 Schematic diagrams of MTF curves of the optical lenses of Example 9, Example 15 and Example 32 are shown respectively. Fig.43 , Fig.44 as well as Fig.45 As shown, the optical lens provided by the embodiment of the present application can achieve high resolution and good imaging quality. The MTF curve schematic diagrams of other embodiments are similar to the above curve diagrams and will not be repeated here.

[0430] In summary, Examples 1 to 42 respectively satisfy the relationships shown in Tables 85-1, 85-2, 86-1, 86-2, 87-1, 87-2, 88-1, and 88-2. In Tables 85-1, 85-2, 86-1, 86-2, 87-1, 87-2, 88-1, and 88-2, the units of F, ENPD, TTL, BFL, H, BFL, and F1 to F5 are millimeters (mm), and the units of φ345, φ, and φ12 are mm. -1 , the unit of FOV is degree (°), and the unit of θ is radian (rad).

[0431] Table 85-1

[0432]

[0433] Table 85-2

[0434]

[0435] Table 86-1

[0436]

[0437] Table 86-2

[0438]

[0439] Table 87-1

[0440]

[0441] Table 87-2

[0442]

[0443] Table 88-1

[0444]

[0445] Table 88-2

[0446]

[0447] The present application also provides an electronic device, which may include an optical lens according to the above-mentioned embodiment of the present application and an imaging element for converting an optical image formed by the optical lens into an electrical signal. The electronic device may be an independent electronic device such as a detection distance camera, or an imaging module integrated in a device such as a detection distance device. In addition, the electronic device may also be an independent imaging device such as a vehicle-mounted camera, or an imaging module integrated in a driving assistance system such as a vehicle-mounted camera.

[0448] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with 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; a second lens having negative optical power, wherein the first side surface is concave and the second side surface is convex; a third lens having positive refractive power; a fourth lens having optical power; and a fifth lens having optical power, wherein the first side surface is convex and the second side surface is concave; The optical lens meets the following requirements: -12≤F2 / F≤-2, 0.27≤T23 / TTL≤0.4, 0.1≤TTL / H / FOVx1°≤0.4, 0.49≤F / F3+F / F4+F / F5≤1, wherein 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, F5 is the effective focal length of the fifth lens, TTL is the total optical length of the optical lens, T23 is the spacing distance between the second lens and the third lens along the optical axis, H is the image height corresponding to the maximum field of view angle of the optical lens, and FOV is the maximum field of view angle of the optical lens.

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

3. The optical lens according to claim 1, characterized in that: The optical lens meets at least one of the following conditions: 0.5≤F / ENPD≤1.8,BFL / TTL≤0.3,D / H / FOVx1°≤0.15,D / H / F≤0.4mm -1 ,0.5rad≥(F θ) / D≥0.1rad,-0.1≤(H / 2-F θ / 2) / (F θ / 2)≤0.1,1≤D / H≤6,1.52° / mm≤FOV / F≤2.18° / mm, Among them, F is the total effective focal length of the optical lens, ENPD is the entrance pupil diameter of the optical lens, H is the image height corresponding to the maximum field angle of the optical lens, FOV is the maximum field angle of the optical lens, TTL is the total optical length of the optical lens, BFL is the optical back focus of the optical lens, D is the maximum light clearance aperture of the first side surface of the first lens corresponding to the maximum field angle of the optical lens, and θ is the radian value corresponding to the maximum field angle of the optical lens.

4. The optical lens according to claim 1, characterized in that: The optical lens meets at least one of the following conditions: -15≤F1 / F≤-2, 0<|R1 / TTL|≤5, 0<|R1 / F1|≤3, 0.2≤|R2 / F1|, Among them, F is the total effective focal length of the optical lens, F1 is the effective focal length of the first lens, R1 is the curvature radius of the first side surface of the first lens, R2 is the curvature radius of the second side surface of the first lens, and TTL is the total optical length of the optical lens.

5. The optical lens according to claim 1, characterized in that: The optical lens meets at least one of the following conditions: -1≤R3 / TTL≤-0.1, 0.05≤R3 / F2≤1, 0.05≤R4 / F2≤2, Among them, R3 is the curvature radius of the first side surface of the second lens, R4 is the curvature radius of the second side surface of the second lens, F2 is the effective focal length of the second lens, and TTL is the total optical length of the optical lens.

6. The optical lens according to claim 1, characterized in that: The optical lens meets at least one of the following conditions: 8≥F3 / F≥0.5, Wherein, F is the total effective focal length of the optical lens, and F3 is the effective focal length of the third lens.

7. The optical lens according to claim 1, characterized in that: The optical lens meets at least one of the following conditions: 0<|F4 / F|≤18, 0<|R7 / TTL|≤6, 0<|R8 / TTL|≤12, Among them, F is the total effective focal length of the optical lens, F4 is the effective focal length of the fourth lens, 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 TTL is the total optical length of the optical lens.

8. The optical lens according to claim 1, characterized in that: The optical lens meets at least one of the following conditions: 0<|F5 / F|≤16, 0.5≤D / D10≤5, 0.2≤R9 / (CT5+R10)≤3, Among them, F is the total effective focal length of the optical lens, F5 is the effective focal length of the fifth lens, D is the maximum light-clearance diameter of the first side surface of the first lens corresponding to the maximum field of view of the optical lens, D10 is the maximum light-clearance diameter of the second side surface of the fifth lens corresponding to the maximum field of view of the optical lens, and CT5 is the center thickness of the fifth lens.

9. The optical lens according to claim 1, characterized in that: The optical lens meets at least one of the following conditions: 0<T12 / TTL≤0.15,-0.73≤Φ12 / Φ<0, Wherein, T12 is the spacing distance between the first lens and the second lens along the optical axis, Φ is the total optical power value of the optical lens, Φ12 is the combined optical power value of the first lens and the second lens, and TTL is the total optical length of the optical lens.

10. The optical lens according to claim 1, characterized in that: The optical lens meets at least one of the following conditions: 0.3≤(CT1+T12+CT2+T23) / TTL≤0.6, Among them, T12 is the spacing distance between the first lens and the second lens along the optical axis, T23 is the spacing distance between the second lens and the third lens along the optical axis, CT1 is the center thickness of the first lens, CT2 is the center thickness of the second lens, and TTL is the total optical length of the optical lens.

11. The optical lens according to claim 1, characterized in that: The optical lens meets at least one of the following conditions: 0.77≤Φ345 / Φ≤1.98, 0.05≤(T34+T45+BFL) / TTL≤0.43, Among them, Φ is the total optical focal length of the optical lens, Φ345 is the combined optical focal length of the third lens, the fourth lens and the fifth lens, T34 is the spacing distance between the third lens and the fourth lens along the optical axis, T45 is the spacing distance between the fourth lens and the fifth lens along the optical axis, TTL is the total optical length of the optical lens, and BFL is the optical back focus of the optical lens.

12. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: 3≤TTL / F≤6, Wherein, F is the total effective focal length of the optical lens, and TTL is the total optical length of the optical lens.

13. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: 1.5≤F / H≤2.1, Wherein, F is the total effective focal length of the optical lens, and H is the image height corresponding to the maximum field angle of the optical lens.

14. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: -1≤R4 / TTL≤-0.1, Wherein, R4 is the curvature radius of the second side surface of the second lens, and TTL is the total optical length of the optical lens.

15. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: -0.72≤F / F1+F / F2≤-0.02, Wherein, F is the total effective focal length of the optical lens, F1 is the effective focal length of the first lens, and F2 is the effective focal length of the second lens.

16. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: 0.02≤R9 / TTL≤5, Wherein, R9 is the curvature radius of the first side surface of the fifth lens, and TTL is the total optical length of the optical lens.

17. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: 0.6≥R10 / TTL≥0.1, Wherein, R10 is the curvature radius of the second side surface of the fifth lens, and TTL is the total optical length of the optical lens.

18. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: (FOV F) / H≥52°, Among them, F is the total effective focal length of the optical lens, H is the image height corresponding to the maximum field of view angle of the optical lens, and FOV is the maximum field of view angle of the optical lens.

19. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: 0.02≤T23 / F3≤1.2, Wherein, T23 is the spacing distance between the second lens and the third lens along the optical axis, and F3 is the effective focal length of the third lens.

20. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: -0.7≤T23 / F2≤0.01, Wherein, T23 is the spacing distance between the second lens and the third lens along the optical axis, and F2 is the effective focal length of the second lens.

21. The optical lens according to claim 1, characterized in that: The optical lens meets at least one of the following conditions: 0.7≤F / ENPD≤1.1,3.6≤TTL / F≤5,0.2≤TTL / H / FOVx1°≤0.3,0.065≤BFL / TTL≤0.21,0.08≤D / H / FOVx1°≤0.12,0.15mm -1 ≤D / H / F≤0.3mm -1 ,0.4rad≥(F θ) / D≥0.25rad,60°≥(FOV F) / H≥54°,-12≤F1 / F≤-3.8,-9.5≤F2 / F≤-2.5,5≥F3 / F≥1.3,1≤|F4 / F|≤12,1≤|F5 / F|≤12,0.3≤|R1 / TTL|≤3,-0.4≤R3 / TTL≤-0.2,-0.6≤R4 / TTL≤-0.2,0.2≤|R7 / TTL|≤3,0.3≤|R8 / TTL|≤8,0.05≤R9 / TTL≤2,0.4≥R10 / TTL≥0.1,-0.05≤(H / 2-F θ / 2) / (F θ / 2)≤0.05,1≤D / D10≤3,2≤D / H≤4,0.27≤T23 / TTL≤0.35,0.1≤|R1 / F1|≤1.8,0.23≤|R2 / F1|,0.1≤R3 / F2≤0.5,0.1≤R4 / F2≤1,0.4≤(CT1+T12+CT2+T23) / TTL≤0.48,0.3≤R9 / (CT5+R10)≤2.6,1.7° / mm≤FOV / F≤2° / mm,0.03≤T12 / TTL≤0.1,0.87≤Φ345 / Φ≤0.98,-0.53≤Φ12 / Φ≤-0.23,-0.52≤F / F1+F / F2≤-0.22,0.1≤(T34+T45+BFL) / TTL≤0.31,1.7≤F / H≤1.9,0.27≤T23 / F3≤0.91,-0.49≤T23 / F2≤-0.13, Wherein, F is the total effective focal length of the optical lens, F1 is the effective focal length of the first 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, F5 is the effective focal length of the fifth lens, R1 is the radius of curvature of the first side surface of the first lens, R2 is the radius of curvature of the second side surface of the first lens, R3 is the radius of curvature of the first side surface of the second lens, R4 is the radius of curvature of the second side surface of the second 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, 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, BFL is the optical back focus of the optical lens, ENPD is the entrance pupil diameter of the optical lens, D is the maximum clear aperture of the first side surface of the first lens corresponding to the maximum field of view of the optical lens, and D10 is the the maximum clear aperture of the second side surface of the fifth lens corresponding to the maximum field of view angle, CT1 is the center thickness of the first lens, CT2 is the center thickness of the second lens, CT5 is the center thickness of the fifth lens, H is the image height corresponding to the maximum field of view angle of the optical lens, FOV is the maximum field of view angle of the optical lens, TTL is the total optical length of the optical lens, θ is the radian value corresponding to the maximum field of view angle of the optical lens, T12 is the spacing distance between the first lens and the second lens along the optical axis, T23 is the spacing distance between the second lens and the third lens along the optical axis, T34 is the spacing distance between the third lens and the fourth lens along the optical axis, T45 is the spacing distance between the fourth lens and the fifth lens along the optical axis, Φ is the total optical power value of the optical lens, Φ12 is the combined optical power value of the first lens and the second lens, and Φ345 is the combined optical power value of the third lens, the fourth lens and the fifth lens.

22. An electronic device, characterized in that: The optical lens comprises any one of claims 1 to 21, and comprises an imaging element for converting an optical image formed by the optical lens into an electrical signal, or comprises a light source.

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