Optical lenses and electronic equipment

Abstract

The present application discloses an optical lens and an electronic device. The optical lens includes seven lenses with optical power in sequence from the first side to the second side along the optical axis: a first lens with negative optical power, whose first side surface is convex and whose second side surface is concave; a second lens with optical power, whose at least one side surface is concave; a third lens with positive optical power; a fourth lens with positive optical power, whose second side surface is convex and whose second side surface is convex; a fifth lens with negative optical power, whose first side surface is concave and whose second side surface is concave; a sixth lens with positive optical power, whose second side surface is convex and whose second side surface is convex; and a seventh lens with optical power; wherein the fourth lens, the fifth lens and the sixth lens are glued together, and the optical lens satisfies: R1 / TTL≤0.55, 0.11≤d3 / TTL≤0.25, 2≤|F2 / F|, 3≤|F7 / F|, 2≤F456 / F≤20.

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] The vehicle-mounted lens is a key component for the automated driving assistance system to obtain external information. The market requirements for the performance and structure of the optical lenses used in vehicles, such as those used for side view, front view, and surround view, are constantly improving with the development of automated driving assistance system technology. For example:

[0003] 1) In order to obtain information more accurately, the automatic driving assistance system needs to be equipped with a larger chip with higher resolution, so the requirements for the resolution of the lens itself are getting higher and higher; 2) In order to meet higher imaging quality requirements, a structure with more lenses is often chosen, but this will increase costs and seriously affect the miniaturization of the lens; 3) On the basis of meeting the imaging requirements of the vehicle-mounted lens, the smaller the lens, the easier it is to install the vehicle-mounted lens, but this will cause the resolution of ordinary vehicle-mounted lenses to conflict with the miniaturization requirements; 4) The CRA design of the lens also needs to match the chip. Since a large CRA will cause serious color cast problems, the CRA of the optical lens should be small to avoid stray light when the light is emitted from the rear end and hit the lens barrel, while it can be well matched with the vehicle-mounted chip without color cast and vignetting. 5) For practical considerations, the vehicle-mounted lens used for assisted driving should reduce ghost image stray light as much as possible to avoid serious ghost image halo affecting the driver's judgment of the actual scene.

[0004] However, the optical lenses in the related art are difficult to meet the above requirements. Summary of the invention

[0005] 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, whose first side surface is convex and whose second side surface is concave; a second lens with optical power, whose at least one side surface is concave; a third lens with positive optical power; a fourth lens with positive optical power, whose second side surface is convex and whose second side surface is convex; a fifth lens with negative optical power, whose first side surface is concave and whose second side surface is concave; a sixth lens with positive optical power, whose second side surface is convex and whose second side surface is convex; and a seventh lens with optical power. lens; wherein the fourth lens, the fifth lens and the sixth lens are glued together, and the optical lens satisfies: R1 / TTL≤0.55, 0.11≤d3 / TTL≤0.25, 2≤|F2 / F|, 3≤|F7 / F|, 2≤F456 / F≤20, wherein F is the total effective focal length of the optical lens, F2 is the effective focal length of the second lens, F7 is the effective focal length of the seventh lens, F456 is the combined focal length of the fourth lens, the fifth lens and the sixth lens, d3 is the center thickness of the third lens, TTL is the total optical length of the optical lens, and R1 is the radius of curvature of the first side of the first lens. The optical lens provided by the embodiment of the present application can achieve at least one of the beneficial effects of low sensitivity, high resolution, small CRA, weak ghost image, and miniaturization.

[0006] In one embodiment, the second lens has positive or negative optical power, a first side surface of the second lens is concave, and a second side surface of the second lens is convex.

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

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

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

[0010] In one embodiment, the optical lens satisfies: F3 / F≤7, wherein F is the total effective focal length of the optical lens, and F3 is the effective focal length of the third lens.

[0011] In one embodiment, the optical lens satisfies: FR1 / F≤5, wherein FR1 is the effective focal length of the first side surface of the first lens, and F is the total effective focal length of the optical lens.

[0012] In one embodiment, the optical lens satisfies: 0.01≤d23 / TTL≤0.25, wherein TTL is the total optical length of the optical lens, and d23 is the spacing distance between the second lens and the third lens along the optical axis.

[0013] In one embodiment, the optical lens satisfies: 1.2≤R1 / F≤3.5, wherein R1 is the radius of curvature of the first side surface of the first lens, and F is the total effective focal length of the optical lens.

[0014] In one embodiment, the optical lens satisfies: 4.5≤TTL / F≤9.5, wherein TTL is the total optical length of the optical lens, and F is the total effective focal length of the optical lens.

[0015] In one embodiment, the optical lens satisfies: |(H-D14) / BFL|≤0.7, wherein H is the image height corresponding to the maximum field angle of the optical lens, D14 is the maximum clear aperture of the second side surface of the seventh lens corresponding to the maximum field angle of the optical lens, and BFL is the optical back focus of the optical lens.

[0016] In one embodiment, the optical lens satisfies: 45°≤(FOV×F) / H≤80°, wherein F is the total effective focal length of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, and FOV is the maximum field of view of the optical lens.

[0017] In one embodiment, the optical lens satisfies: 1.3≤R1 / R2≤4, wherein R1 is the radius of curvature of the first side surface of the first lens, and R2 is the radius of curvature of the second side surface of the first lens.

[0018] In one embodiment, the optical lens satisfies: D / H / FOVx1°≤0.025, wherein D is the maximum light clearance aperture of the first side surface of the first lens corresponding to the maximum field of view of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, and FOV is the maximum field of view of the optical lens.

[0019] In one embodiment, the optical lens satisfies: 1.5≤(F4+F5+F6) / F≤4, wherein F4 is the effective focal length of the fourth lens, F5 is the effective focal length of the fifth lens, and F6 is the effective focal length of the sixth lens.

[0020] In one embodiment, the optical lens satisfies: |Sag31-Sag32| / d3≤0.4, wherein Sag31 is the sag height of the first side surface of the third lens, Sag32 is the sag height of the second side surface of the third lens, and d3 is the center thickness of the third lens.

[0021] In one embodiment, the optical lens satisfies: F3 / F456≤3, wherein F3 is the effective focal length of the third lens, and F456 is the combined focal length of the fourth lens, the fifth lens, and the sixth lens.

[0022] In one embodiment, the optical lens satisfies: -3≤F1 / F≤-1, wherein F is the total effective focal length of the optical lens, and F1 is the effective focal length of the first lens.

[0023] In one embodiment, the optical lens satisfies: 0.13≤d456 / TTL≤0.37, wherein d456 is the spacing distance from the first side surface of the fourth lens to the second side surface of the sixth lens along the optical axis, and TTL is the total optical length of the optical lens.

[0024] In one embodiment, the optical lens satisfies: 0.1≤d air space / TTL≤0.45, wherein d air space is the sum of air spaces between the first lens to the seventh lens, and TTL is the total optical length of the optical lens.

[0025] In one embodiment, the optical lens satisfies: -1.5≤(1 / F1+1 / F2) / (1 / F3+1 / F456)≤-0.35, 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, and F456 is the combined focal length of the fourth lens, the fifth lens, and the sixth lens.

[0026] In one embodiment, the optical lens satisfies at least one of the following: 0.05≤BFL / TTL≤0.16, 0.4rad≤(F*θ) / D≤0.9rad, |F / R3|+|F / R4|≤2, F / ENPD≤2, d34 / TTL≤0.15, d67 / TTL≤0.02, wherein F is the total effective focal length of the optical lens, BEL is the optical back focus 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 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, 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, ENPD is the entrance pupil diameter of the optical lens, d34 is the spacing distance between the third lens and the fourth lens along the optical axis, and d67 is the spacing distance between the sixth lens and the seventh lens along the optical axis.

[0027] In one embodiment, the optical lens satisfies at least one of the following: 0.12≤d3 / TTL≤0.2, 0.5≤F3 / F≤5.5, 0.1≤R1 / TTL≤0.45, 1.75≤FR1 / F≤3.5, 0.015≤d23 / TTL≤0.2, 0.07≤BFL / TTL≤0.11, 1.5≤R1 / F≤3.2, 6≤TTL / F≤8.5, 0.5rad≤(F*θ) / D≤0.8rad, 0.01≤|(H-D14) / BFL|≤0.5, 48°≤(FOV×F) / H≤72°, 1.6≤R1 / R2≤3.5, 0.009≤D / H / FOVx1°≤0.022, 1.8≤(F4+ F5+F6) / F≤3.2, 0.02≤|Sag31-Sag32| / d3≤0.25, 0.2≤|F / R3|+|F / R4|≤1.5, 1.75≤F / ENPD≤1.85, 0.05≤F3 / F456≤2.8, -2.8≤F1 / F≤-1.3, 2.5≤|F2 / F|≤140, 2.3≤F456 / F≤18, 3.5≤|F7 / F|≤125, 0.15≤d456 / TTL≤0.33, d34 / TTL≤0.1, 0.15≤dair spacing / TTL≤0.37, -1.3≤(1 / F1+1 / F2) / (1 / F3+1 / F456)≤-0.5, d67 / TTL≤0.016, where 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, F6 is the effective focal length of the sixth lens, F7 is the effective focal length of the seventh lens, FR1 is the effective focal length of the first side surface of the first lens, F456 is the combined focal length of the fourth lens, the fifth lens and the sixth lens, TTL is the total optical length of the optical 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, 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, FOV is the maximum field of view of the optical lens, and D is the maximum field of view of the first side surface of the first lens corresponding to the maximum field of view of the optical lens. Large clear aperture, H is the image height corresponding to the maximum field angle of the optical lens, θ is the arc value corresponding to the maximum field angle of the optical lens, D14 is the maximum clear aperture of the second side of the seventh lens corresponding to the maximum field angle of the optical lens, BFL is the optical back focus of the optical lens, Sag31 is the sagittal height of the first side of the third lens, Sag32 is the sagittal height of the second side of the third lens, d3 is the center thickness of the third lens, ENPD is the entrance pupil diameter of the optical lens, d23 is the spacing distance between the second lens and the third lens along the optical axis, d34 is the spacing distance between the third lens and the fourth lens along the optical axis, d67 is the spacing distance between the sixth lens and the seventh lens along the optical axis, d456 is the spacing distance from the first side of the fourth lens to the second side of the sixth lens along the optical axis, and d air spacing is the sum of the air spacings between the first lens to the seventh lens. .

[0028] In one embodiment, the optical lens satisfies at least one of the following: 0.125≤d3 / TTL≤0.185, 1.931≤F3 / F≤4.946, 0.225≤R1 / TTL≤0.430, 2.166≤FR1 / F≤3.188, 0.021≤d23 / TTL≤0.164, 0.080≤BFL / TTL≤0.103, 1.776≤R1 / F≤2.9 05, 6.752≤TTL / F≤8.245, 0.597rad≤(F*θ) / D≤0.784rad, 0.028≤|(H-D14) / BFL|≤0.410, 52 .208≤(FOV×F) / H≤66.076, 2.065≤R1 / R2≤3.181, 0.011≤D / H / FOVx1°≤0.019, 2.215≤(F4+F5 +F6) / F≤2.999,0.058≤|Sag31-Sag32| / d3≤0.195,0.413≤|F / R3|+|F / R4|≤1.221,1.800≤F / ENPD≤1.800,0.146≤F3 / F456≤1.799,-2.629≤F1 / F≤-1.721,3.761≤|F2 / F|≤89.128,2.67 ≤F456 / F≤13.182, 5.805≤|F7 / F|≤80, 0.190≤d456 / TTL≤0.293, 0.003≤d34 / TTL≤0.087, 0.204≤dair interval / TTL≤0.335, -1.185≤(1 / F1+1 / F2) / (1 / F3+1 / F456)≤-0.682, 0.003≤d67 / TTL≤0.012, where 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, F6 is the effective focal length of the sixth lens, F7 is the effective focal length of the seventh lens, FR1 is the effective focal length of the first side surface of the first lens, F456 is the combined focal length of the fourth lens, the fifth lens and the sixth lens, TTL is the total optical length of the optical 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, 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, FOV is the maximum field of view of the optical lens, and D is the maximum field of view of the first side surface of the first lens corresponding to the maximum field of view of the optical lens. Large clear aperture, H is the image height corresponding to the maximum field angle of the optical lens, θ is the arc value corresponding to the maximum field angle of the optical lens, D14 is the maximum clear aperture of the second side of the seventh lens corresponding to the maximum field angle of the optical lens, BFL is the optical back focus of the optical lens, Sag31 is the sagittal height of the first side of the third lens, Sag32 is the sagittal height of the second side of the third lens, d3 is the center thickness of the third lens, ENPD is the entrance pupil diameter of the optical lens, d23 is the spacing distance between the second lens and the third lens along the optical axis, d34 is the spacing distance between the third lens and the fourth lens along the optical axis, d67 is the spacing distance between the sixth lens and the seventh lens along the optical axis, d456 is the spacing distance from the first side of the fourth lens to the second side of the sixth lens along the optical axis, and d air spacing is the sum of the air spacings between the first lens to the seventh lens. .

[0029] Another aspect of the present application provides an electronic device, comprising the optical lens of any of the above embodiments, and comprising an imaging element for converting an optical image formed by the optical lens into an electrical signal, or comprising a light source. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] 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:

[0031] Figures 1 to 21 Schematic diagrams of the structures of optical lenses according to Embodiments 1 to 21 of the present application are respectively shown; and

[0032] Fig. 22 A schematic diagram of the MTF curve of the optical lens according to the embodiment provided by the present application is shown. DETAILED DESCRIPTION

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] It should be understood that the optical lens provided in the present application can be used for both video recording and projection. When the optical lens provided in the present application is used for a video recording lens, the "first side" referred to in this article may refer to the object side, and the "second side" may refer to the image side; when the optical lens provided in the present application is used for a projection lens or a radar transmitting lens, the "first side" referred to in this article may refer to the imaging side, and the "second side" may refer to the image source side.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] The features, principles and other aspects of the present application are described in detail below.

[0042] In an exemplary embodiment, the optical lens includes, for example, seven lenses having optical power, namely, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens, which are arranged in sequence from the first side to the second side along the optical axis.

[0043] 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.

[0044] 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.

[0045] 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).

[0046] In an exemplary embodiment, the first lens may have a negative optical focal length, and its first side surface may be a convex surface, and its second side surface may be a concave surface. The first lens has a negative optical focal length, so that the light emitted through the first lens can, under the condition of a certain field of view angle, allow the rear optical system to have a larger light receiving surface. The first side surface of the first lens is a convex surface, which is convenient for the first lens to collect light in a large range. The entry of a large amount of light is beneficial to improving the overall light throughput and illumination of the optical lens, and at the same time, it can also avoid the problem of dust accumulation that may occur in actual use. The second side surface of the first lens is concave, which can quickly diverge the large-angle light passing through the first side surface of the first lens, so as to collect as much large-field light as possible to enter the rear optical system, which is conducive to achieving a large field of view. In an exemplary embodiment, the first lens can be made of a high-refractive index material, which is conducive to the convergence of the front-end light and the reduction of the front port diameter.

[0047] In an exemplary embodiment, the second lens may have a negative focal length, and may receive the light from the first lens, and smoothly diverge the light to the rear optical system, which helps to increase the amount of light passing through. In an exemplary embodiment, the first side surface of the second lens may be a concave surface, and the second side surface may be a convex surface. The first side surface of the second lens is a concave surface, which can better receive the light emitted by the first lens, so that the deflection is small, which is conducive to reducing sensitivity. At the same time, it can also receive the light emitted by the first lens with a smaller aperture, and further diverge the light that diverges and tends to rise, which is conducive to further increasing the amount of light passing through the periphery. The second side surface of the second lens is a convex surface, which can converge the light that diverges and rises from the front system, reduce the aperture of the rear optical system, and help miniaturization. In an exemplary embodiment, the first side surface of the second lens may be a concave surface, and the second side surface may be a concave surface. The first side surface of the second lens is a concave surface, which can better receive the light emitted by the first lens, so that the deflection is small, which is conducive to reducing sensitivity. At the same time, it can receive the light emitted by the first lens with a smaller aperture, and further diverge the light that diverges and tends to rise, which is conducive to further increasing the amount of light passing through the periphery. The second side surface of the second lens is a concave surface, which can further diverge the light passing through the first side surface of the second lens, so that the light reaching the aperture has a higher imaging position, which is conducive to achieving a small FNO. In an exemplary embodiment, the first side surface of the second lens can be a convex surface, and the second side surface can be a concave surface. The first side surface of the second lens is a convex surface, which can control the divergent and upward light transmitted from the front system to a certain extent, reduce the aperture of the rear optical system, and help to achieve the miniaturization of the optical lens. The second side surface of the second lens is a concave surface, which can diverge the converged light passing through the first side surface of the second lens, so that the rear light has a higher imaging position, which is conducive to achieving a small FNO.

[0048] In an exemplary embodiment, an aperture for limiting the light beam may be provided between the second lens and the third lens, which is beneficial for effectively converging the light entering the optical lens, so as to reduce the front port diameter of the optical lens and reduce the assembly sensitivity of the optical lens. However, it should be noted that the position of the aperture disclosed herein is only an example and not a limitation; in alternative embodiments, the aperture may also be provided at other positions according to actual needs.

[0049] In an exemplary embodiment, the second lens may have positive focal power, and its first side surface may be a concave surface, and the second side surface may be a convex surface. Providing the second lens with positive focal power can converge and gather the light that has a divergent trend after passing through the first lens, which helps to reduce the aperture of the rear optical system. The first side surface of the second lens is a concave surface, which can better receive the light emitted by the first lens, so that the deflection is smaller, which is conducive to reducing sensitivity. At the same time, it can also receive the light emitted by the first lens with a smaller aperture, and further diverge the light that has a divergent upward trend, which is conducive to increasing the peripheral light throughput. The second side surface of the second lens is a convex surface, which can converge the divergent upward light transmitted from the front optical system, reduce the aperture of the rear optical system, and help to achieve the miniaturization of the optical lens.

[0050] In an exemplary embodiment, the third lens may have positive focal power. The third lens has positive focal power, which further converges the light passing through the second lens and lowers the height of the peripheral light, so as to facilitate the reduction of the aperture of the rear lens. In an exemplary embodiment, the first side of the third lens may be a convex surface, and the second side may be a convex surface. The first side of the third lens is a convex surface, which can effectively converge the light, smooth the light trend, reduce the system sensitivity, and reduce the rear port diameter, which is conducive to miniaturization. In an exemplary embodiment, the shape of the first side of the fourth lens may be significantly different from the shape of the second side of the third lens, and the second side of the third lens is a convex surface, which can further change the light trend, compress the aperture of the rear optical system, and help to achieve the miniaturization of the optical lens. In an exemplary embodiment, the first side of the third lens may be a convex surface, and the second side may be a concave surface. The first side of the third lens is a convex surface, which can quickly converge the divergent and upward light transmitted from the front system, which can not only reduce the length of the entire optical system, but also reduce the aperture of the rear optical system, which is conducive to the miniaturization of the optical lens. The second side surface of the third lens is a concave surface, which can slightly diverge the light converged by the first side surface of the third lens, so that more peripheral light can reach the imaging surface and improve the relative illumination of the periphery. In an exemplary embodiment, the first side surface of the third lens can be a concave surface, and the second side surface can be a convex surface. The first side surface of the third lens is a concave surface, which can further deflect the divergent light from the front upward to achieve a higher imaging height. The second side surface of the third lens is a convex surface, which can deflect the divergent light from the first side surface of the third lens toward the direction of the optical axis, so that the light smoothly transitions to the rear optical system.

[0051] In an exemplary embodiment, the fourth lens, the fifth lens, and the sixth lens can be glued together to form a glued part. Since the light rays are continuously diverged by the first lens and the second lens and then converged by the third lens, more optical path differences will be introduced, making it difficult to completely eliminate the chromatic aberration of the optical lens. In this case, the focal length and surface shape of the third lens are reasonably matched with the second lens (for example, the focal length and surface shape have the above-mentioned embodiments), so that the light rays can enter the fourth lens more smoothly when emitted from the third lens, and the fourth lens, the fifth lens, and the sixth lens are glued together to form a glued part, which is more conducive to correcting chromatic aberration, so that various aberrations of the optical system can be fully corrected, and the resolution can be improved, and the optical performance such as distortion and CRA can be optimized under the premise of compact structure. Furthermore, the cemented component formed by the fourth lens, the fifth lens and the sixth lens also has the following effects: achromatism. Since the refractive indexes of lights of different wavelengths in the same material are different, the lights of different wavelengths are focused at different positions after passing through the lenses, which will cause blurred and distorted imaging. By cementing the fourth lens, the fifth lens and the sixth lens to form the cemented component, a single optical element can be formed by combining materials with high and low refractive indices and different dispersion coefficients, thereby eliminating the air gap between the lenses and reducing the reflection and scattering losses caused by the interfaces of different media. At the same time, the lights of different wavelengths can be corrected and the optical path difference can be balanced so that they can be focused on the same focal point. The cemented component formed by gluing four lenses, a fifth lens and a sixth lens provided in the embodiment of the present application can achieve a better effect of eliminating chromatic aberration than a cemented component formed by gluing two lenses, that is, it can not only eliminate primary chromatic aberration, but also eliminate secondary spectrum, achieve the effect of apochromatism, and thus greatly improve the imaging clarity of the optical lens; reduce the spacing distance between lenses along the optical axis (such as air spacing), thereby reducing the total optical length of the optical lens; reduce the number of assembly components between lenses, thereby reducing the number of processes, making it easier to control quality during the manufacturing process and reducing the scrap rate; the effective focal length values ​​between the three lenses can be reasonably allocated, thereby helping to achieve thermal compensation, so that the optical lens can achieve good temperature performance; after forming the glued component lens, large refractive index materials can be used without total reflection at the interface, which increases the optimization solution space of the material and helps to further improve the performance of the optical lens.

[0052] In an exemplary embodiment, the glued component formed by the fourth lens, the fifth lens and the sixth lens can have a "positive-negative-positive" optical power combination, that is, the fourth lens can have a positive optical power, the fifth lens can have a negative optical power, and the sixth lens can have a positive optical power. The fourth lens has a positive optical power, which can converge the divergent light in front. By reasonably matching with the sixth lens of the fifth lens, the spherical aberration and chromatic aberration of the optical system can be greatly reduced, and the resolution can be improved. In this embodiment, the first side surface of the fourth lens can be a convex surface, and the second side surface can be a convex surface, so as to further achieve the technical effect of reducing the spherical aberration and chromatic aberration of the optical system and improving the resolution. The fifth lens has a negative optical power, which can make appropriate divergence adjustments to the light converged by the fourth lens. By reasonably matching with the sixth lens of the fifth lens, it can effectively correct various aberrations caused by the lens with positive optical power in front (such as the third lens), and achieve technical effects such as improving image quality, optimizing distortion, and CRA. In this embodiment, the first side surface of the fifth lens can be a concave surface, and the second side surface can be a concave surface, so as to further achieve technical effects such as improving image quality, optimizing distortion, and CRA. The sixth lens has positive focal power and can converge light. By reasonably matching with the fourth lens and the fifth lens, the forward light can be further converged and adjusted, so that after the light passes through the cemented component, the chromatic aberration and spherical aberration of the optical lens can be balanced and corrected, so that the optical lens can achieve a good imaging effect. In this embodiment, the first side surface of the sixth lens can be a convex surface, and the second side surface can be a convex surface, so as to further balance and correct the chromatic aberration and spherical aberration of the optical lens.

[0053] In an exemplary embodiment, at least one of the first to seventh lenses may be a spherical lens or an aspherical lens. In an exemplary embodiment, the seventh 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 adopting 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.

[0054] In an exemplary embodiment, the seventh lens may have a negative optical power. The seventh lens has a negative optical power, which can further diverge the light passing through the front optical system, increase the illumination of the peripheral field of view, and improve the resolution. In an exemplary embodiment, the seventh lens may be an aspherical lens to smoothly transition the light passing through the cemented member to the second side of the seventh lens, thereby correcting astigmatism and field curvature and improving the resolution of the optical lens. In an exemplary embodiment, the first side of the seventh lens may be a convex surface, and the second side may be a concave surface. The first side of the seventh lens is a convex surface, which can converge the incident light transmitted by the front optical system so that it quickly reaches the imaging surface, which helps to achieve a short optical total length of the optical system. The second side of the seventh lens is a concave surface, which can diverge the central light so that the light can reach a higher imaging position, and can also converge the peripheral reversely bent light, so that the incident angle of the light entering the chip is reduced, which helps to improve the illumination and reduce chromatic aberration. In an exemplary embodiment, the first side of the seventh lens may be a concave surface, and the second side may be a concave surface. The seventh lens is an aspherical lens, and its first side surface is concave, which can properly diverge the light and smooth the light trend emitted from several consecutive convex surfaces in front (such as the sixth lens whose first and second sides are both convex), which is conducive to improving the resolution. The second side surface of the seventh lens is concave, which can further diverge the central light, so that the light can reach a higher imaging position, and at the same time can converge the reverse curved light around, so that the incident angle of the light entering the chip is reduced, which helps to improve the illumination and reduce the chromatic aberration.

[0055] In an exemplary embodiment, the seventh lens may have positive focal power, and its first side surface may be convex, and its second side surface may be concave. The seventh lens has positive focal power, and can further converge the front light, and can shorten the distance from the light to the imaging surface, so as to realize the miniaturization of the optical lens, reduce light loss, and improve the imaging quality. In an exemplary embodiment, the seventh lens may be an aspherical lens, so as to smoothly transition the light passing through the cemented part to the imaging surface, and then correct the astigmatism and field curvature, and improve the resolution ability of the optical lens. The first side surface of the seventh lens is a convex surface, which can converge the incident light transmitted by the front optical system, so that the light can quickly reach the imaging surface, which helps to shorten the total optical length of the optical lens. The second side surface of the seventh lens is a concave surface, which can further diverge the central light, so that the light can reach a higher imaging position, and can also converge the reversely bent light in the periphery, so that the incident angle of the light entering the chip is reduced, which helps to improve the illumination and reduce chromatic aberration.

[0056] Figure 1 The optical lens provided by the present application can be used as a vehicle-mounted lens, for example. Figure 1IMA represents an imaging surface, and light from an object passes through each surface S1 to S16 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 an image source plane, and light from the image source plane passes through the surfaces S16 to S1 in sequence and is finally projected onto a projection plane (not shown) disposed on the first side.

[0057] In an exemplary embodiment, the optical lens may satisfy: 0.11≤d3 / TTL≤0.25, wherein d3 is the center thickness of the third lens, and TTL is the total optical length of the optical lens. In an exemplary embodiment, the third lens may have a positive focal length to converge light. Since the light deflection is large, by making the optical lens satisfy the above conditional formula, appropriately increasing the center thickness of the third lens (center thickness, i.e., the distance from the center of the first side surface of the lens to the center of the second side surface on the optical axis) is beneficial to increase the optical path, so that the divergent light incident from the front can be effectively converged, the light trend is smoothed, and the sensitivity of the optical lens is reduced. Preferably, the optical lens may further satisfy: 0.12≤d3 / TTL≤0.2, which is more conducive to achieving the low sensitivity of the optical lens while taking into account miniaturization and high resolution. More preferably, the optical lens may further satisfy: 0.125≤d3 / TTL≤0.185, which is more conducive to achieving the low sensitivity of the optical lens while taking into account miniaturization and high resolution.

[0058] In an exemplary embodiment, the optical lens may satisfy: F3 / F≤7, wherein F3 is the effective focal length of the third lens, and F is the total effective focal length of the optical lens. By making the optical lens satisfy the above conditional formula and controlling the effective focal length value of the third lens to be smaller, the light rays that have diverged through the front optical system can be effectively converged, so that more light rays can enter the rear optical system, thereby improving the imaging quality and light throughput, and at the same time facilitating the miniaturization of the rear end. Preferably, the optical lens may further satisfy: 0.5≤F3 / F≤5.5, which is more conducive to achieving high resolution and small aperture of the optical lens. More preferably, the optical lens may further satisfy: 1.931≤F3 / F≤4.946, which is more conducive to achieving high resolution and small aperture of the optical lens. In an exemplary embodiment, satisfying the conditions F3 / F≤7 (or 0.5≤F3 / F≤5.5, 1.931≤F3 / F≤4.946) and 0.11≤d3 / TTL≤0.25 (or 0.12≤d3 / TTL≤0.2, 0.125≤d3 / TTL≤0.185) at the same time is beneficial to reducing the sensitivity of the optical lens and further beneficial to improving the imaging quality.

[0059] In an exemplary embodiment, the optical lens may satisfy: R1 / TTL≤0.55, wherein R1 is the radius of curvature of the first side of the first lens, and TTL is the total optical length of the optical lens. By making the optical lens satisfy the above conditional formula and controlling the radius of curvature of the first side of the first lens, the pupil image of the ghost image can be moved away from the focal plane, so that the ghost image light incident on the imaging surface is ultimately relatively divergent, thereby effectively reducing the relative energy value of the ghost image and improving the quality of the imaging picture of the optical lens. Preferably, the optical lens may further satisfy: 0.1≤R1 / TTL≤0.45, which is more conducive to achieving weak ghost images of the optical lens. More preferably, the optical lens may further satisfy: 0.225≤R1 / TTL≤0.430, which is more conducive to achieving weak ghost images of the optical lens.

[0060] In an exemplary embodiment, the optical lens may satisfy: FR1 / F≤5, wherein FR1 is the effective focal length of the first side of the first lens, and F is the total effective focal length of the optical lens. By making the optical lens satisfy the above conditional formula and controlling the ratio of the effective focal length of the first side of the first lens to the total effective focal length to be smaller, the first side of the first lens may have a stronger ability to deflect light, which is beneficial to reduce the reflection of light from a flatter surface, thereby reducing the risk of ghost images formed between the lens and the protective glass of the chip. Preferably, the optical lens may further satisfy: 1.75≤FR1 / F≤3.5, which is more conducive to achieving weak ghost images of the optical lens. More preferably, the optical lens may further satisfy: 2.166≤FR1 / F≤3.188, which is more conducive to achieving weak ghost images of the optical lens.

[0061] In an exemplary embodiment, the optical lens may satisfy: 0.01≤d23 / TTL≤0.25, wherein d23 is the spacing distance between the second lens and the third lens along the optical axis, and TTL is the total optical length of the optical lens. By making the optical lens satisfy the above conditional formula and controlling the ratio of the spacing distance between the second lens and the third lens along the optical axis to the total optical length of the optical lens, the light rays with an upward trend emitted by the first lens and the second lens can be transmitted farther, so that the peripheral light rays can reach a higher imaging position, thereby improving the illumination of the entire optical lens while taking into account miniaturization. Preferably, the optical lens may further satisfy: 0.015≤d23 / TTL≤0.2, which is more conducive to achieving high resolution and high light throughput of the optical lens. More preferably, the optical lens may further satisfy: 0.021≤d23 / TTL≤0.164, which is more conducive to achieving high resolution and high light throughput of the optical lens.

[0062] In an exemplary embodiment, the optical lens may satisfy: 0.05≤BFL / TTL≤0.16, wherein BFL is the optical back focus of the optical lens, and TTL is the total optical length of the optical lens. By making the optical lens satisfy the above conditional formula and controlling the ratio of the optical back focus to the total optical length of the optical lens, the entire optical lens can be made more compact and miniaturized while meeting the assembly requirements. Preferably, the optical lens may further satisfy: 0.07≤BFL / TTL≤0.11, which is more conducive to miniaturization of the optical lens. More preferably, the optical lens may further satisfy: 0.080≤BFL / TTL≤0.103, which is more conducive to miniaturization of the optical lens while taking into account high resolution.

[0063] In an exemplary embodiment, the optical lens may satisfy: 1.2≤R1 / F≤3.5, wherein R1 is the radius of curvature of the first side of the first lens, and F is the total effective focal length of the optical lens. In an exemplary embodiment, the first side of the first lens may be a convex surface. By making the optical lens satisfy the above conditional formula and rationally controlling the radius of curvature of the first side of the first lens, it is beneficial to collect light rays at large angles to enter the lens and achieve a large field of view. Preferably, the optical lens may further satisfy: 1.5≤R1 / F≤3.2, which is more conducive to achieving a large field of view and high resolution for the optical lens. More preferably, the optical lens may further satisfy: 1.776≤R1 / F≤2.905, which is more conducive to achieving a large field of view and high resolution for the optical lens.

[0064] In an exemplary embodiment, the optical lens may satisfy: 4.5≤TTL / F≤9.5, wherein TTL is the total optical length of the optical lens, and F is the total effective focal length of the optical lens. By making the optical lens satisfy the above conditional formula and controlling the ratio of the total optical length to the total effective focal length of the optical lens within this range, the miniaturization of the optical lens can be achieved. Preferably, the optical lens may further satisfy: 6≤TTL / F≤8.5, which is more conducive to achieving the miniaturization of the optical lens while taking into account high resolution. More preferably, the optical lens may further satisfy: 6.752≤TTL / F≤8.245, which is more conducive to achieving the miniaturization of the optical lens while taking into account high resolution.

[0065] In an exemplary embodiment, the optical lens may satisfy: 0.4rad≤(F*θ) / D≤0.9rad, wherein F is the total effective focal length of the optical lens, θ is the radian value corresponding to the maximum field angle of the optical lens, and D is the maximum aperture of the first side of the first lens corresponding to the maximum field angle of the optical lens. By making the optical lens satisfy the above conditional formula, controlling the effective focal length value of the lens, the radian value of the maximum field angle, and the maximum aperture of the first side of the first lens corresponding to the maximum field angle, the optical lens can be made to have a smaller front port diameter while satisfying a large field angle, thereby reducing the volume of the imaging system of the optical lens. Preferably, the optical lens may further satisfy: 0.5rad≤(F*θ) / D≤0.8rad, which is more conducive to achieving a small aperture and high resolution of the optical lens. More preferably, the optical lens may further satisfy: 0.597rad≤(F*θ) / D≤0.784rad, which is more conducive to achieving a small aperture and high resolution of the optical lens.

[0066] In an exemplary embodiment, the optical lens may satisfy: |(H-D14) / BFL|≤0.7, wherein H is the image height corresponding to the maximum field angle of the optical lens, D14 is the maximum clear aperture of the second side of the seventh lens corresponding to the maximum field angle of the optical lens, and BFL is the optical back focus of the optical lens. By making the optical lens satisfy the above conditional formula, the maximum clear aperture of the second side of the last lens (e.g., the seventh lens) corresponding to the maximum field angle of the optical lens is close to the image height, which can reduce the light deflection and facilitate the realization of a small CRA. Preferably, the optical lens may further satisfy: 0.01≤|(H-D14) / BFL|≤0.5, which is more conducive to achieving a small CRA of the optical lens while taking into account high resolution. More preferably, the optical lens may further satisfy: 0.028≤|(H-D14) / BFL|≤0.410, which is more conducive to achieving a small CRA of the optical lens while taking into account high resolution.

[0067] In an exemplary embodiment, the optical lens may satisfy: 45°≤(FOV×F) / H≤80°, wherein F is the total effective focal length of the optical lens, FOV is the maximum field of view of the optical lens, and H is the image height corresponding to the maximum field of view of the optical lens. By making the optical lens satisfy the above conditional formula, controlling the maximum field of view of the optical lens, the image height corresponding to the maximum field of view, and the total effective focal length, the optical lens can simultaneously satisfy the requirements of telephoto and large field of view, as well as a large angular resolution in the central area. Preferably, the optical lens may further satisfy: 48°≤(FOV×F) / H≤72°, which is more conducive to achieving a large field of view and high resolution for the optical lens. More preferably, the optical lens may further satisfy: 52.208≤(FOV×F) / H≤66.076, which is more conducive to achieving a large field of view for the optical lens.

[0068] In an exemplary embodiment, the optical lens may satisfy: 1.3≤R1 / R2≤4, wherein R1 is the radius of curvature of the first side of the first lens, and R2 is the radius of curvature of the second side of the first lens. By making the optical lens satisfy the above conditional formula and controlling the radius of curvature of the first side and the second side of the first lens, it is beneficial to collect light with a large field of view angle to enter the optical lens to achieve wide-angle imaging. The second side adopts a larger curvature, which is beneficial to make the edge light deflect more, so that the edge light trend diverges, which is beneficial to achieve a large field of view and reduce the front port diameter. Preferably, the optical lens may further satisfy: 1.6≤R1 / R2≤3.5, which is more conducive to achieving a small aperture, a large field of view and high resolution of the optical lens. More preferably, the optical lens may further satisfy: 2.065≤R1 / R2≤3.181, which is more conducive to achieving a small aperture, a large field of view and high resolution of the optical lens.

[0069] In an exemplary embodiment, the optical lens may satisfy: D / H / FOVx1°≤0.025, wherein D is the maximum aperture of the first side of the first lens corresponding to the maximum field of view of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, and FOV is the maximum field of view of the optical lens. By making the optical lens satisfy the above conditional formula, the smaller aperture of the first side of the first lens and the high resolution of the optical lens can be taken into account when the image height corresponding to the maximum field of view of the optical lens and the maximum field of view are constant. Preferably, the optical lens may further satisfy: 0.009≤D / H / FOVx1°≤0.022, which is more conducive to achieving a small aperture and high resolution of the optical lens. More preferably, the optical lens may further satisfy: 0.011≤D / H / FOVx1°≤0.019, which is more conducive to achieving a small aperture and high resolution of the optical lens.

[0070] In an exemplary embodiment, the optical lens may satisfy: 1.5≤(F4+F5+F6) / F≤4, wherein F4 is the effective focal length of the fourth lens, F5 is the effective focal length of the fifth lens, F6 is the effective focal length of the sixth lens, and F is the total effective focal length of the optical lens. In an exemplary embodiment, the fourth lens, the fifth lens, and the sixth lens may be glued together to form a glued piece, and the fourth lens may have a positive focal power, the fifth lens may have a negative focal power, and the sixth lens may have a positive focal power. By making the optical lens satisfy the above conditional formula and reasonably allocating the effective focal length values ​​of the three lenses, the chromatic aberration of the entire optical lens may be effectively corrected and the resolution may be improved. Preferably, the optical lens may further satisfy: 1.8≤(F4+F5+F6) / F≤3.2, which is more conducive to achieving small chromatic aberration and high resolution of the optical lens. More preferably, the optical lens may further satisfy: 2.215≤(F4+F5+F6) / F≤2.999, which is more conducive to achieving small chromatic aberration and high resolution of the optical lens.

[0071] In an exemplary embodiment, the optical lens may satisfy: |Sag31-Sag32| / d3≤0.4, wherein Sag31 is the sagittal height of the first side of the third lens, Sag32 is the sagittal height of the second side of the third lens, and d3 is the center thickness of the third lens. By making the optical lens satisfy the above conditional formula, the lens proportions of the third lens are uniform, and the overall shape is relatively flat, so that the overall moment of the third lens is small when subjected to radial force, and the change is uniform after thermal expansion and contraction, and the thermal performance is good, and the optical lens can be processed simply, which helps to reduce the production cost. Preferably, the optical lens may further satisfy: 0.02≤|Sag31-Sag32| / d3≤0.25, which is more conducive to achieving good temperature performance and low cost of the optical lens. More preferably, the optical lens may further satisfy: 0.058≤|Sag31-Sag32| / d3≤0.195, which is more conducive to achieving good temperature performance and low cost of the optical lens.

[0072] In an exemplary embodiment, the optical lens may satisfy: |F / R3|+|F / R4|≤2, wherein F is the total effective focal length of the optical lens, R3 is the radius of curvature of the first side of the second lens, and R4 is the radius of curvature of the second side of the second lens. By making the optical lens satisfy the above conditional formula and controlling the radius of curvature of the second lens, the height of the light emitted through the second lens can be adjusted, so that the rear optical system has a larger light receiving surface, which is beneficial to balance the aberration and increase the amount of light entering the optical lens. Preferably, the optical lens may further satisfy: 0.2≤|F / R3|+|F / R4|≤1.5, which is more conducive to achieving high resolution of the optical lens. More preferably, the optical lens may further satisfy: 0.413≤|F / R3|+|F / R4|≤1.221, which is more conducive to achieving high resolution of the optical lens.

[0073] In an exemplary embodiment, the optical lens may satisfy: F / ENPD≤2, where F is the total effective focal length of the optical lens, and ENPD is the entrance pupil diameter of the optical lens. By making the optical lens satisfy the above conditional formula, a small FNO can be achieved, which is conducive to increasing the amount of light passing through, and a large entrance pupil diameter also helps to improve the relative illumination. Preferably, the optical lens may further satisfy: 1.75≤F / ENPD≤1.85, which is more conducive to achieving high light flux and high resolution of the optical lens.

[0074] In an exemplary embodiment, the optical lens may satisfy: F3 / F456≤3, wherein F3 is the effective focal length of the third lens, and F456 is the combined focal length of the fourth lens, the fifth lens, and the sixth lens. By making the optical lens satisfy the above conditional formula and controlling the ratio of the effective focal length value of the third lens to the combined focal length of the cemented parts, the light rays that tend to diverge in the front may be smoothly transitioned to the rear, so that the light rays may be more concentrated on the imaging surface, thereby improving the resolution of the optical lens. Preferably, the optical lens may further satisfy: 0.05≤F3 / F456≤2.8, which is more conducive to achieving high resolution of the optical lens. More preferably, the optical lens may further satisfy: 0.146≤F3 / F456≤1.799, which is more conducive to achieving high resolution of the optical lens.

[0075] In an exemplary embodiment, the optical lens may satisfy: -3≤F1 / F≤-1, wherein F is the total effective focal length of the optical lens, and F1 is the effective focal length of the first lens. By making the optical lens satisfy the above conditional formula, the effective focal length value of the first lens is made smaller, which is conducive to collecting light with a large field of view, so that the light can enter the rear optical system well after being diverged by the first lens, thereby increasing the light flux. Preferably, the optical lens may further satisfy: -2.8≤F1 / F≤-1.3, which is more conducive to achieving a large field of view, high light flux and high resolution of the optical lens. More preferably, the optical lens may further satisfy: -2.629≤F1 / F≤-1.721, which is more conducive to achieving a large field of view, high light flux and high resolution of the optical lens.

[0076] In an exemplary embodiment, the optical lens may satisfy: 2≤|F2 / F|, where F is the total effective focal length of the optical lens, and F2 is the effective focal length of the second lens. By making the optical lens satisfy the above conditional formula, the effective focal length value of the second lens is made larger, so that the second lens can receive the light with a larger deflection from the first lens to the third lens, which is conducive to a smooth transition of the light, thereby reducing the sensitivity of the optical lens and improving the resolution quality. Since the maximum value of |F2 / F| in this application reaches 89.128, the second lens itself has little effect on the trend of the light, and is mainly used to receive the light with a larger deflection from the first lens to the third lens, and plays a transition role on the light. When the ratio of the effective focal length of the second lens to the total effective focal length approaches infinity (for example, 1000, 10000, etc.), this effect can be achieved, and thus in this application, the value of |F2 / F| may not be set to an upper limit. Preferably, the optical lens may further satisfy: 2.5≤|F2 / F|≤140, which is more conducive to achieving low sensitivity and high resolution of the optical lens. More preferably, the optical lens can further satisfy: 3.761≤|F2 / F|≤89.128, which is more conducive to achieving low sensitivity and high resolution of the optical lens.

[0077] In an exemplary embodiment, the optical lens may satisfy: 2≤F456 / F≤20, wherein F is the total effective focal length of the optical lens, and F456 is the combined focal length of the fourth lens, the fifth lens, and the sixth lens. By making the optical lens satisfy the above conditional formula, after the light quickly converges after passing through the third lens and enters the bonding component, the bonding component can slowly converge the light, which is beneficial to reducing light sensitivity, reducing light energy loss, and improving resolution quality. Preferably, the optical lens may further satisfy: 2.3≤F456 / F≤18, which is more beneficial to achieving low sensitivity and high resolution of the optical lens. More preferably, the optical lens may further satisfy: 2.67≤F456 / F≤13.182, which is more beneficial to achieving low sensitivity and high resolution of the optical lens.

[0078] In an exemplary embodiment, the optical lens may satisfy: 3≤|F7 / F|, where F is the total effective focal length of the optical lens, and F7 is the effective focal length of the seventh lens. By making the optical lens satisfy the above conditional formula, the effective focal length value of the seventh lens is relatively large, and it can receive the light emitted through the front bonding member, so that the light deflection angle is small, which is conducive to the light being able to be incident to the imaging surface approximately vertically, thereby reducing CRA. Since the maximum value of |F7 / F| in the present application reaches 79.083, the seventh lens has little effect on the light trend, and is mainly used to receive the light emitted through the bonding member, so that the light deflection angle is small, thereby reducing CRA, and when the ratio of the effective focal length of the seventh lens to the total effective focal length approaches infinity (for example, 1000, 10000, etc.), this effect can be achieved, and thus in the present application, the value of |F7 / F| may not be set to an upper limit. Preferably, the optical lens may further satisfy: 3.5≤|F7 / F|≤125, which is more conducive to achieving a small CRA and high resolution of the optical lens. More preferably, the optical lens can further satisfy: 5.805≤|F7 / F|≤80, which is more conducive to achieving a small CRA of the optical lens while taking into account high resolution.

[0079] In an exemplary embodiment, the optical lens may satisfy: 0.13≤d456 / TTL≤0.37, wherein d456 is the spacing distance from the first side surface of the fourth lens to the second side surface of the sixth lens along the optical axis, and TTL is the total optical length of the optical lens. By making the optical lens satisfy the above conditional formula, after the light quickly converges through the third lens and enters the bonding part, the thickness of the bonding part is appropriately set, which is conducive to controlling the optical path trend, reducing chromatic aberration, and improving the resolution quality. Preferably, the optical lens may further satisfy: 0.15≤d456 / TTL≤0.33, which is more conducive to achieving high resolution of the optical lens. More preferably, the optical lens may further satisfy: 0.190≤d456 / TTL≤0.293, which is more conducive to achieving high resolution of the optical lens.

[0080] In an exemplary embodiment, the optical lens may satisfy: d34 / TTL≤0.15, wherein TTL is the total optical length of the optical lens, and d34 is the distance between the third lens and the fourth lens along the optical axis. By making the optical lens satisfy the above conditional formula and appropriately setting the distance between the third lens and the fourth lens along the optical axis, the light can smoothly enter the bonding member while making the overall structure of the optical lens compact, thereby reducing the sensitivity of the optical lens and improving the resolution quality. Preferably, the optical lens may further satisfy: d34 / TTL≤0.1, which is more conducive to miniaturization and high resolution of the optical lens. More preferably, the optical lens may further satisfy: 0.003≤d34 / TTL≤0.087, which is more conducive to miniaturization and high resolution of the optical lens.

[0081] In an exemplary embodiment, the optical lens may satisfy: 0.1≤d air interval / TTL≤0.45, wherein TTL is the total optical length of the optical lens, and d air interval is the sum of the air intervals between the first lens to the seventh lens. By making the optical lens satisfy the above conditional formula and rationally controlling the spacing distance between the lenses, it is beneficial to make the optical lens structure compact on the basis of achieving high resolution of the optical lens, thereby realizing miniaturization of the optical lens. Preferably, the optical lens may further satisfy: 0.15≤d air interval / TTL≤0.37, which is more conducive to miniaturization of the optical lens while taking into account high resolution. More preferably, the optical lens may further satisfy: 0.204≤d air interval / TTL≤0.335, which is more conducive to miniaturization of the optical lens while taking into account high resolution.

[0082] In an exemplary embodiment, the optical lens may satisfy: -1.5≤(1 / F1+1 / F2) / (1 / F3+1 / F456)≤-0.35, wherein 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, and F456 is the combined focal length of the fourth lens, the fifth lens, and the sixth lens. The light rays at the front end of the optical lens tend to diverge, and at the rear end they tend to converge. By making the optical lens satisfy the above conditional formula and controlling the optical power of the first lens, the second lens, the third lens, and the bonding component, it is beneficial for the rear end lens to better receive the light emitted by the front end lens, thereby being able to effectively change the light trend and achieve high resolution. Preferably, the optical lens may further satisfy: -1.3≤(1 / F1+1 / F2) / (1 / F3+1 / F456)≤-0.5, which is more conducive to achieving high resolution of the optical lens. More preferably, the optical lens can further satisfy: -1.185≤(1 / F1+1 / F2) / (1 / F3+1 / F456)≤-0.682, which is more conducive to achieving high resolution of the optical lens.

[0083] In an exemplary embodiment, the optical lens may satisfy: d67 / TTL≤0.02, wherein d67 is the distance between the sixth lens and the seventh lens along the optical axis, and TTL is the total optical length of the optical lens. By making the optical lens satisfy the above conditional formula, the distance between the sixth lens and the seventh lens along the optical axis is made smaller, which is conducive to the compact structure of the rear end of the optical lens, so that the miniaturization of the optical lens can be achieved on the basis of satisfying high resolution. Preferably, the optical lens may further satisfy: d67 / TTL≤0.016, which is more conducive to achieving the miniaturization of the optical lens while taking into account high resolution. More preferably, the optical lens may further satisfy: 0.003≤d67 / TTL≤0.012, which is more conducive to achieving the miniaturization of the optical lens while taking into account high resolution.

[0084] 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 seventh 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.

[0085] In an exemplary embodiment, the first lens to the seventh lens may be a glass lens or a plastic lens. 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 lens to the seventh lens can all be glass aspherical lenses. In applications where temperature stability requirements are lower, the first lens to the seventh lens in the optical lens can also be made of plastic. Making optical lenses with plastic can effectively reduce production costs. Of course, the first lens to the seventh lens in the optical lens can also be made of a combination of plastic and glass.

[0086] In an exemplary embodiment, the first side surface and / or the second side surface of the seventh lens may have a reverse curve, with a convex central portion and a concave edge portion, which is beneficial for better correcting the aberration of light emitted from different fields of view while keeping the overall shape of the seventh lens flat.

[0087] According to the above-mentioned embodiment of the present application, the optical lens has at least one beneficial effect of low sensitivity, high resolution, small aperture, weak ghost image, high light throughput, miniaturization, large field of view, small CRA, small chromatic aberration, good temperature performance, low cost, and high light throughput through the reasonable setting of parameters such as lens shape and optical focal length.

[0088] 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 seven lenses are described as an example in the embodiment, the optical lens is not limited to including seven lenses. If necessary, the optical lens may also include other numbers of lenses. The following further describes specific embodiments of the optical lens applicable to the above-mentioned embodiments with reference to the accompanying drawings. Example 1

[0089] 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.

[0090] 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, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in sequence from the first side to the second side along the optical axis.

[0091] The first lens L1 has negative refractive power, and its first side surface S1 is a convex surface, and its second side surface S2 is a concave surface.

[0092] 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.

[0093] 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 convex surface.

[0094] The fourth lens L4 has positive refractive power, and its first side surface S7 is a convex surface, and its second side surface S8 is a convex surface.

[0095] The fifth lens L5 has negative refractive power, and its first side surface S8 is concave, and its second side surface S9 is concave.

[0096] The sixth lens L6 has positive refractive power, and its first side surface S9 is a convex surface, and its second side surface S10 is a convex surface.

[0097] The seventh lens L7 has negative refractive power, and its first side surface S11 is convex, and its second side surface S12 is concave.

[0098] The fourth lens L4, the fifth lens L5 and the sixth lens L6 are cemented together to form a cemented member. The first side surface S11 and the second side surface S12 of the seventh lens L7 are inversely curved.

[0099] The optical lens may further include a stop STO, and the stop STO may be disposed between the second lens L2 and the third lens L3.

[0100] Optionally, the optical lens may further include a filter having a first side surface S13 and a second side surface S14, and a protective glass having a first side surface S15 and a second side surface S16.

[0101] The optical lens provided in the present application can be used as, for example, a vehicle-mounted lens. In this case, Figure 1 IMA represents the imaging surface, and the light from the object passes through the surfaces S1 to S16 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 an image source plane, and light from the image source plane passes through the surfaces S16 to S1 in sequence and is finally projected onto a projection plane (not shown) disposed on the first side.

[0102] 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.

[0103] Table 1

[0104]

[0105] In Embodiment 1, the first side surface S11 and the second side surface S12 of the seventh lens L7 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:

[0106] (1)

[0107] 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 S11 and S12 in Example 1.

[0108] Table 2

[0109] Example 2

[0110] 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 2 A schematic structural diagram of an optical lens according to Example 2 of the present application is shown.

[0111] 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, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in sequence from the first side to the second side along the optical axis.

[0112] The first lens L1 has negative refractive power, and its first side surface S1 is a convex surface, and its second side surface S2 is a concave surface.

[0113] 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.

[0114] 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 convex surface.

[0115] The fourth lens L4 has positive refractive power, and its first side surface S7 is a convex surface, and its second side surface S8 is a convex surface.

[0116] The fifth lens L5 has negative refractive power, and its first side surface S8 is concave, and its second side surface S9 is concave.

[0117] The sixth lens L6 has positive refractive power, and its first side surface S9 is a convex surface, and its second side surface S10 is a convex surface.

[0118] The seventh lens L7 has negative refractive power, and its first side surface S11 is convex, and its second side surface S12 is concave.

[0119] The first side surface S11 and the second side surface S12 of the seventh lens L7 are inversely curved.

[0120] Table 3 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 2. Table 4 shows the conic coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical mirror surface first side surface S11 and second side surface S12 of the aspherical lens seventh lens L7 that can be used in Example 2, wherein each aspherical surface shape can be defined by the formula (1) given in the above Example 1.

[0121] Table 3

[0122]

[0123] Table 4

[0124] Example 3

[0125] The following reference Figure 3 An optical lens according to Example 3 of the present application is described. Figure 3 A schematic structural diagram of an optical lens according to Example 3 of the present application is shown.

[0126] 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, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in sequence from the first side to the second side along the optical axis.

[0127] The first lens L1 has negative refractive power, and its first side surface S1 is a convex surface, and its second side surface S2 is a concave surface.

[0128] 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.

[0129] 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 convex surface.

[0130] The fourth lens L4 has positive refractive power, and its first side surface S7 is a convex surface, and its second side surface S8 is a convex surface.

[0131] The fifth lens L5 has negative refractive power, and its first side surface S8 is concave, and its second side surface S9 is concave.

[0132] The sixth lens L6 has positive refractive power, and its first side surface S9 is a convex surface, and its second side surface S10 is a convex surface.

[0133] The seventh lens L7 has negative refractive power, and its first side surface S11 is concave, and its second side surface S12 is concave.

[0134] The second side surface S12 of the seventh lens L7 is inversely curved.

[0135] Table 5 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 3. Table 6 shows the conic coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical mirror surface first side surface S11 and second side surface S12 of the aspherical lens seventh lens L7 that can be used in Example 3, wherein each aspherical surface shape can be defined by formula (1) given in the above Example 1.

[0136] Table 5

[0137]

[0138] Table 6

[0139] Example 4

[0140] The following reference Figure 4 An optical lens according to Example 4 of the present application is described. Figure 4A schematic structural diagram of an optical lens according to Example 4 of the present application is shown.

[0141] 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, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in sequence from the first side to the second side along the optical axis.

[0142] The first lens L1 has negative refractive power, and its first side surface S1 is a convex surface, and its second side surface S2 is a concave surface.

[0143] 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.

[0144] 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 convex surface.

[0145] The fourth lens L4 has positive refractive power, and its first side surface S7 is a convex surface, and its second side surface S8 is a convex surface.

[0146] The fifth lens L5 has negative refractive power, and its first side surface S8 is concave, and its second side surface S9 is concave.

[0147] The sixth lens L6 has positive refractive power, and its first side surface S9 is a convex surface, and its second side surface S10 is a convex surface.

[0148] The seventh lens L7 has negative refractive power, and its first side surface S11 is concave, and its second side surface S12 is concave.

[0149] The second side surface S12 of the seventh lens L7 has inverse curvature.

[0150] Table 7 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 4. Table 8 shows the conic coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical mirror surface first side surface S11 and second side surface S12 of the aspherical lens seventh lens L7 that can be used in Example 4, wherein each aspherical surface shape can be defined by the formula (1) given in the above Example 1.

[0151] Table 7

[0152]

[0153] Table 8

[0154] Example 5

[0155] The following reference Figure 5An optical lens according to Example 5 of the present application is described. Figure 5 A schematic structural diagram of an optical lens according to Example 5 of the present application is shown.

[0156] like Figure 5 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in sequence from the first side to the second side along the optical axis.

[0157] The first lens L1 has negative refractive power, and its first side surface S1 is a convex surface, and its second side surface S2 is a concave surface.

[0158] 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 concave surface.

[0159] 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 convex surface.

[0160] The fourth lens L4 has positive refractive power, and its first side surface S7 is a convex surface, and its second side surface S8 is a convex surface.

[0161] The fifth lens L5 has negative refractive power, and its first side surface S8 is concave, and its second side surface S9 is concave.

[0162] The sixth lens L6 has positive refractive power, and its first side surface S9 is a convex surface, and its second side surface S10 is a convex surface.

[0163] The seventh lens L7 has positive refractive power, and its first side surface S11 is convex, and its second side surface S12 is concave.

[0164] Table 9 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 5. Table 10 shows the conic coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical mirror surface first side surface S11 and second side surface S12 of the aspherical lens seventh lens L7 that can be used in Example 5, wherein each aspherical surface shape can be defined by the formula (1) given in the above Example 1.

[0165] Table 9

[0166]

[0167] Table 10

[0168] Example 6

[0169] The following reference Figure 6 An optical lens according to Example 6 of the present application is described. Figure 6A schematic structural diagram of an optical lens according to Example 6 of the present application is shown.

[0170] 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, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in sequence from the first side to the second side along the optical axis.

[0171] The first lens L1 has negative refractive power, and its first side surface S1 is a convex surface, and its second side surface S2 is a concave surface.

[0172] 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 concave surface.

[0173] 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 convex surface.

[0174] The fourth lens L4 has positive refractive power, and its first side surface S7 is a convex surface, and its second side surface S8 is a convex surface.

[0175] The fifth lens L5 has negative refractive power, and its first side surface S8 is concave, and its second side surface S9 is concave.

[0176] The sixth lens L6 has positive refractive power, and its first side surface S9 is a convex surface, and its second side surface S10 is a convex surface.

[0177] The seventh lens L7 has positive refractive power, and its first side surface S11 is convex, and its second side surface S12 is concave.

[0178] Table 11 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 6. Table 12 shows the conic coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical mirror surface first side surface S11 and second side surface S12 of the aspherical lens seventh lens L7 that can be used in Example 6, wherein each aspherical surface shape can be defined by formula (1) given in the above Example 1.

[0179] Table 11

[0180]

[0181] Table 12

[0182] Example 7

[0183] The following reference Figure 7 An optical lens according to Example 7 of the present application is described. Figure 7 A schematic structural diagram of an optical lens according to Example 7 of the present application is shown.

[0184] 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, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in sequence from the first side to the second side along the optical axis.

[0185] The first lens L1 has negative refractive power, and its first side surface S1 is a convex surface, and its second side surface S2 is a concave surface.

[0186] The second lens L2 has negative refractive power, and its first side surface S3 is a convex surface, and its second side surface S4 is a concave surface.

[0187] 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 convex surface.

[0188] The fourth lens L4 has positive refractive power, and its first side surface S7 is a convex surface, and its second side surface S8 is a convex surface.

[0189] The fifth lens L5 has negative refractive power, and its first side surface S8 is concave, and its second side surface S9 is concave.

[0190] The sixth lens L6 has positive refractive power, and its first side surface S9 is a convex surface, and its second side surface S10 is a convex surface.

[0191] The seventh lens L7 has positive refractive power, and its first side surface S11 is convex, and its second side surface S12 is concave.

[0192] Table 13 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 7. Table 14 shows the conic coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical mirror surface first side surface S11 and second side surface S12 of the aspherical lens seventh lens L7 that can be used in Example 7, wherein each aspherical surface shape can be defined by formula (1) given in the above Example 1.

[0193] Table 13

[0194]

[0195] Table 14

[0196] Example 8

[0197] The following reference Figure 8 An optical lens according to Example 8 of the present application is described. Figure 8 A schematic structural diagram of an optical lens according to Example 8 of the present application is shown.

[0198] like Figure 8 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in sequence from the first side to the second side along the optical axis.

[0199] The first lens L1 has negative refractive power, and its first side surface S1 is a convex surface, and its second side surface S2 is a concave surface.

[0200] The second lens L2 has negative refractive power, and its first side surface S3 is a convex surface, and its second side surface S4 is a concave surface.

[0201] 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 convex surface.

[0202] The fourth lens L4 has positive refractive power, and its first side surface S7 is a convex surface, and its second side surface S8 is a convex surface.

[0203] The fifth lens L5 has negative refractive power, and its first side surface S8 is concave, and its second side surface S9 is concave.

[0204] The sixth lens L6 has positive refractive power, and its first side surface S9 is a convex surface, and its second side surface S10 is a convex surface.

[0205] The seventh lens L7 has positive refractive power, and its first side surface S11 is convex, and its second side surface S12 is concave.

[0206] Table 15 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 8. Table 16 shows the conic coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical mirror surface first side surface S11 and second side surface S12 of the aspherical lens seventh lens L7 that can be used in Example 8, wherein each aspherical surface shape can be defined by formula (1) given in the above Example 1.

[0207] Table 15

[0208]

[0209] Table 16

[0210] Example 9

[0211] The following reference Fig. 9 An optical lens according to Example 9 of the present application is described. Fig. 9 A schematic structural diagram of an optical lens according to Example 9 of the present application is shown.

[0212] like Fig. 9As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in sequence from the first side to the second side along the optical axis.

[0213] The first lens L1 has negative refractive power, and its first side surface S1 is a convex surface, and its second side surface S2 is a concave surface.

[0214] The second lens L2 has positive refractive power, a first side surface S3 thereof is a concave surface, and a second side surface S4 thereof is a convex surface.

[0215] 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 convex surface.

[0216] The fourth lens L4 has positive refractive power, and its first side surface S7 is a convex surface, and its second side surface S8 is a convex surface.

[0217] The fifth lens L5 has negative refractive power, and its first side surface S8 is concave, and its second side surface S9 is concave.

[0218] The sixth lens L6 has positive refractive power, and its first side surface S9 is a convex surface, and its second side surface S10 is a convex surface.

[0219] The seventh lens L7 has positive refractive power, and its first side surface S11 is convex, and its second side surface S12 is concave.

[0220] Table 17 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 9. Table 18 shows the conic coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical mirror surface first side surface S11 and second side surface S12 of the aspherical lens seventh lens L7 that can be used in Example 9, wherein each aspherical surface shape can be defined by the formula (1) given in the above Example 1.

[0221] Table 17

[0222]

[0223] Table 18

[0224] Example 10

[0225] The following reference Fig.10 An optical lens according to Example 10 of the present application is described. Fig.10 A schematic structural diagram of an optical lens according to Example 2 of the present application is shown.

[0226] like Fig.10As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in sequence from the first side to the second side along the optical axis.

[0227] The first lens L1 has negative refractive power, and its first side surface S1 is a convex surface, and its second side surface S2 is a concave surface.

[0228] The second lens L2 has positive refractive power, a first side surface S3 thereof is a concave surface, and a second side surface S4 thereof is a convex surface.

[0229] 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 convex surface.

[0230] The fourth lens L4 has positive refractive power, and its first side surface S7 is a convex surface, and its second side surface S8 is a convex surface.

[0231] The fifth lens L5 has negative refractive power, and its first side surface S8 is concave, and its second side surface S9 is concave.

[0232] The sixth lens L6 has positive refractive power, and its first side surface S9 is a convex surface, and its second side surface S10 is a convex surface.

[0233] The seventh lens L7 has positive refractive power, and its first side surface S11 is convex, and its second side surface S12 is concave.

[0234] Table 19 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 10. Table 20 shows the conic coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical mirror surface first side surface S11 and second side surface S12 of the aspherical lens seventh lens L7 that can be used in Example 10, wherein each aspherical surface shape can be defined by formula (1) given in the above Example 1.

[0235] Table 19

[0236]

[0237] Table 20

[0238] Embodiment 11

[0239] The following reference Fig.11 An optical lens according to Example 11 of the present application is described. Fig.11 A schematic structural diagram of an optical lens according to Example 11 of the present application is shown.

[0240] like Fig.11As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in sequence from the first side to the second side along the optical axis.

[0241] The first lens L1 has negative refractive power, and its first side surface S1 is a convex surface, and its second side surface S2 is a concave surface.

[0242] 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.

[0243] 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.

[0244] The fourth lens L4 has positive refractive power, and its first side surface S7 is a convex surface, and its second side surface S8 is a convex surface.

[0245] The fifth lens L5 has negative refractive power, and its first side surface S8 is concave, and its second side surface S9 is concave.

[0246] The sixth lens L6 has positive refractive power, and its first side surface S9 is a convex surface, and its second side surface S10 is a convex surface.

[0247] The seventh lens L7 has positive refractive power, and its first side surface S11 is convex, and its second side surface S12 is concave.

[0248] The first side surface S11 and the second side surface S12 of the seventh lens L7 are inversely curved.

[0249] Table 21 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 11. Table 22 shows the conic coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical mirror surface first side surface S11 and second side surface S12 of the aspherical lens seventh lens L7 that can be used in Example 11, wherein each aspherical surface shape can be defined by formula (1) given in the above Example 1.

[0250] Table 21

[0251]

[0252] Table 22

[0253] Example 12

[0254] The following reference Fig.12 An optical lens according to Example 12 of the present application is described. Fig.12 A schematic structural diagram of an optical lens according to Example 12 of the present application is shown.

[0255] 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, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in sequence from the first side to the second side along the optical axis.

[0256] The first lens L1 has negative refractive power, and its first side surface S1 is a convex surface, and its second side surface S2 is a concave surface.

[0257] 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.

[0258] 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.

[0259] The fourth lens L4 has positive refractive power, and its first side surface S7 is a convex surface, and its second side surface S8 is a convex surface.

[0260] The fifth lens L5 has negative refractive power, and its first side surface S8 is concave, and its second side surface S9 is concave.

[0261] The sixth lens L6 has positive refractive power, and its first side surface S9 is a convex surface, and its second side surface S10 is a convex surface.

[0262] The seventh lens L7 has positive refractive power, and its first side surface S11 is convex, and its second side surface S12 is concave.

[0263] The first side surface S11 and the second side surface S12 of the seventh lens L7 are inversely curved.

[0264] Table 23 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 12. Table 24 shows the conic coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical mirror surface first side surface S11 and second side surface S12 of the aspherical lens seventh lens L7 that can be used in Example 12, wherein each aspherical surface shape can be defined by formula (1) given in the above Example 1.

[0265] Table 23

[0266]

[0267] Table 24

[0268] Embodiment 13

[0269] The following reference Fig.13 An optical lens according to Example 13 of the present application is described. Fig.13 A schematic structural diagram of an optical lens according to Example 13 of the present application is shown.

[0270] 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, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in sequence from the first side to the second side along the optical axis.

[0271] The first lens L1 has negative refractive power, and its first side surface S1 is a convex surface, and its second side surface S2 is a concave surface.

[0272] 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.

[0273] The third lens L3 has positive refractive power, a first side surface S5 of which is a concave surface, and a second side surface S6 of which is a convex surface.

[0274] The fourth lens L4 has positive refractive power, and its first side surface S7 is a convex surface, and its second side surface S8 is a convex surface.

[0275] The fifth lens L5 has negative refractive power, and its first side surface S8 is concave, and its second side surface S9 is concave.

[0276] The sixth lens L6 has positive refractive power, and its first side surface S9 is a convex surface, and its second side surface S10 is a convex surface.

[0277] The seventh lens L7 has positive refractive power, and its first side surface S11 is convex, and its second side surface S12 is concave.

[0278] The first side surface S11 and the second side surface S12 of the seventh lens L7 are inversely curved.

[0279] Table 25 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 13. Table 26 shows the conic coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical mirror surface first side surface S11 and second side surface S12 of the aspherical lens seventh lens L7 that can be used in Example 13, wherein each aspherical surface shape can be defined by formula (1) given in the above Example 1.

[0280] Table 25

[0281]

[0282] Table 26

[0283] Embodiment 14

[0284] The following reference Fig.14 An optical lens according to Example 14 of the present application is described. Fig.14 A schematic structural diagram of an optical lens according to Example 14 of the present application is shown.

[0285] like Fig.14 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in sequence from the first side to the second side along the optical axis.

[0286] The first lens L1 has negative refractive power, and its first side surface S1 is a convex surface, and its second side surface S2 is a concave surface.

[0287] 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.

[0288] The third lens L3 has positive refractive power, a first side surface S5 of which is a concave surface, and a second side surface S6 of which is a convex surface.

[0289] The fourth lens L4 has positive refractive power, and its first side surface S7 is a convex surface, and its second side surface S8 is a convex surface.

[0290] The fifth lens L5 has negative refractive power, and its first side surface S8 is concave, and its second side surface S9 is concave.

[0291] The sixth lens L6 has positive refractive power, and its first side surface S9 is a convex surface, and its second side surface S10 is a convex surface.

[0292] The seventh lens L7 has positive refractive power, and its first side surface S11 is convex, and its second side surface S12 is concave.

[0293] The first side surface S11 and the second side surface S12 of the seventh lens L7 are inversely curved.

[0294] Table 27 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 14. Table 28 shows the conic coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical mirror surface first side surface S11 and second side surface S12 of the aspherical lens seventh lens L7 that can be used in Example 14, wherein each aspherical surface shape can be defined by formula (1) given in the above Example 1.

[0295] Table 27

[0296]

[0297] Table 28

[0298] Embodiment 15

[0299] The following reference Fig.15 An optical lens according to Example 15 of the present application is described. Fig.15 A schematic structural diagram of an optical lens according to Example 15 of the present application is shown.

[0300] 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, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in sequence from the first side to the second side along the optical axis.

[0301] The first lens L1 has negative refractive power, and its first side surface S1 is a convex surface, and its second side surface S2 is a concave surface.

[0302] The second lens L2 has positive refractive power, a first side surface S3 thereof is a concave surface, and a second side surface S4 thereof is a convex surface.

[0303] 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 convex surface.

[0304] The fourth lens L4 has positive refractive power, and its first side surface S7 is a convex surface, and its second side surface S8 is a convex surface.

[0305] The fifth lens L5 has negative refractive power, and its first side surface S8 is concave, and its second side surface S9 is concave.

[0306] The sixth lens L6 has positive refractive power, and its first side surface S9 is a convex surface, and its second side surface S10 is a convex surface.

[0307] The seventh lens L7 has negative refractive power, and its first side surface S11 is convex, and its second side surface S12 is concave.

[0308] The first side surface S11 of the seventh lens L7 has inverse curvature.

[0309] Table 29 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 15. Table 30 shows the conic coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical mirror surface first side surface S11 and second side surface S12 of the aspherical lens seventh lens L7 that can be used in Example 15, wherein each aspherical surface shape can be defined by formula (1) given in the above Example 1.

[0310] Table 29

[0311]

[0312] Table 30

[0313] Example 16

[0314] The following reference Fig.16 An optical lens according to Example 16 of the present application is described. Fig.16 A schematic structural diagram of an optical lens according to Example 16 of the present application is shown.

[0315] 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, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in sequence from the first side to the second side along the optical axis.

[0316] The first lens L1 has negative refractive power, and its first side surface S1 is a convex surface, and its second side surface S2 is a concave surface.

[0317] The second lens L2 has positive refractive power, a first side surface S3 thereof is a concave surface, and a second side surface S4 thereof is a convex surface.

[0318] 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 convex surface.

[0319] The fourth lens L4 has positive refractive power, and its first side surface S7 is a convex surface, and its second side surface S8 is a convex surface.

[0320] The fifth lens L5 has negative refractive power, and its first side surface S8 is concave, and its second side surface S9 is concave.

[0321] The sixth lens L6 has positive refractive power, and its first side surface S9 is a convex surface, and its second side surface S10 is a convex surface.

[0322] The seventh lens L7 has negative refractive power, and its first side surface S11 is convex, and its second side surface S12 is concave.

[0323] The first side surface S11 of the seventh lens L7 has inverse curvature.

[0324] Table 31 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 16. Table 32 shows the conic coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical mirror surface first side surface S11 and second side surface S12 of the aspherical lens seventh lens L7 that can be used in Example 16, wherein each aspherical surface shape can be defined by formula (1) given in the above Example 1.

[0325] Table 31

[0326]

[0327] Table 32

[0328] Embodiment 17

[0329] The following reference Fig.17 An optical lens according to Example 17 of the present application is described. Fig.17 A schematic structural diagram of an optical lens according to Example 17 of the present application is shown.

[0330] 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, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in sequence from the first side to the second side along the optical axis.

[0331] The first lens L1 has negative refractive power, and its first side surface S1 is a convex surface, and its second side surface S2 is a concave surface.

[0332] 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.

[0333] The third lens L3 has positive refractive power, a first side surface S5 of which is a concave surface, and a second side surface S6 of which is a convex surface.

[0334] The fourth lens L4 has positive refractive power, and its first side surface S7 is a convex surface, and its second side surface S8 is a convex surface.

[0335] The fifth lens L5 has negative refractive power, and its first side surface S8 is concave, and its second side surface S9 is concave.

[0336] The sixth lens L6 has positive refractive power, and its first side surface S9 is a convex surface, and its second side surface S10 is a convex surface.

[0337] The seventh lens L7 has negative refractive power, and its first side surface S11 is convex, and its second side surface S12 is concave.

[0338] The first side surface S11 and the second side surface S12 of the seventh lens L7 are inversely curved.

[0339] Table 33 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 17. Table 34 shows the conic coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical mirror surface first side surface S11 and second side surface S12 of the aspherical lens seventh lens L7 that can be used in Example 17, wherein each aspherical surface shape can be defined by formula (1) given in the above Example 1.

[0340] Table 33

[0341]

[0342] Table 34

[0343] Embodiment 18

[0344] The following reference Fig.18 An optical lens according to Example 18 of the present application is described. Fig.18 A schematic structural diagram of an optical lens according to Example 8 of the present application is shown.

[0345] 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, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in sequence from the first side to the second side along the optical axis.

[0346] The first lens L1 has negative refractive power, and its first side surface S1 is a convex surface, and its second side surface S2 is a concave surface.

[0347] 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.

[0348] The third lens L3 has positive refractive power, a first side surface S5 of which is a concave surface, and a second side surface S6 of which is a convex surface.

[0349] The fourth lens L4 has positive refractive power, and its first side surface S7 is a convex surface, and its second side surface S8 is a convex surface.

[0350] The fifth lens L5 has negative refractive power, and its first side surface S8 is concave, and its second side surface S9 is concave.

[0351] The sixth lens L6 has positive refractive power, and its first side surface S9 is a convex surface, and its second side surface S10 is a convex surface.

[0352] The seventh lens L7 has negative refractive power, and its first side surface S11 is convex, and its second side surface S12 is concave.

[0353] The first side surface S11 and the second side surface S12 of the seventh lens L7 are inversely curved.

[0354] Table 35 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 18. Table 36 shows the conic coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical mirror surface first side surface S11 and second side surface S12 of the aspherical lens seventh lens L7 that can be used in Example 18, wherein each aspherical surface shape can be defined by formula (1) given in the above Example 1.

[0355] Table 35

[0356]

[0357] Table 36

[0358] Embodiment 19

[0359] The following reference Fig.19 An optical lens according to Example 19 of the present application is described. Fig.19 A schematic structural diagram of an optical lens according to Example 19 of the present application is shown.

[0360] 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, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in sequence from the first side to the second side along the optical axis.

[0361] The first lens L1 has negative refractive power, and its first side surface S1 is a convex surface, and its second side surface S2 is a concave surface.

[0362] 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.

[0363] 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.

[0364] The fourth lens L4 has positive refractive power, and its first side surface S7 is a convex surface, and its second side surface S8 is a convex surface.

[0365] The fifth lens L5 has negative refractive power, and its first side surface S8 is concave, and its second side surface S9 is concave.

[0366] The sixth lens L6 has positive refractive power, and its first side surface S9 is a convex surface, and its second side surface S10 is a convex surface.

[0367] The seventh lens L7 has negative refractive power, and its first side surface S11 is convex, and its second side surface S12 is concave.

[0368] The first side surface S11 and the second side surface S12 of the seventh lens L7 are inversely curved.

[0369] Table 37 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 19. Table 38 shows the conic coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical mirror surface first side surface S11 and second side surface S12 of the aspherical lens seventh lens L7 that can be used in Example 19, wherein each aspherical surface shape can be defined by formula (1) given in the above Example 1.

[0370] Table 37

[0371]

[0372] Table 38

[0373] Embodiment 20

[0374] The following reference Fig. 20 An optical lens according to Example 20 of the present application is described. Fig. 20 A schematic structural diagram of an optical lens according to Example 20 of the present application is shown.

[0375] like Fig. 20 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in sequence from the first side to the second side along the optical axis.

[0376] The first lens L1 has negative refractive power, and its first side surface S1 is a convex surface, and its second side surface S2 is a concave surface.

[0377] 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.

[0378] The third lens L3 has positive refractive power, and its first side surface S5 is convex, and its second side surface S6 is concave.

[0379] The fourth lens L4 has positive refractive power, and its first side surface S7 is a convex surface, and its second side surface S8 is a convex surface.

[0380] The fifth lens L5 has negative refractive power, and its first side surface S8 is concave, and its second side surface S9 is concave.

[0381] The sixth lens L6 has positive refractive power, and its first side surface S9 is a convex surface, and its second side surface S10 is a convex surface.

[0382] The seventh lens L7 has negative refractive power, and its first side surface S11 is convex, and its second side surface S12 is concave.

[0383] The first side surface S11 and the second side surface S12 of the seventh lens L7 are inversely curved.

[0384] Table 39 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 20. Table 40 shows the conic coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical mirror surface first side surface S11 and second side surface S12 of the aspherical lens seventh lens L7 that can be used in Example 20, wherein each aspherical surface shape can be defined by formula (1) given in the above Example 1.

[0385] Table 39

[0386]

[0387] Table 40

[0388] Embodiment 21

[0389] The following reference Fig.21 An optical lens according to Example 21 of the present application is described. Fig.21 A schematic structural diagram of an optical lens according to Example 20 of the present application is shown.

[0390] 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, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in sequence from the first side to the second side along the optical axis.

[0391] The first lens L1 has negative refractive power, and its first side surface S1 is a convex surface, and its second side surface S2 is a concave surface.

[0392] 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.

[0393] 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 convex surface.

[0394] The fourth lens L4 has positive refractive power, and its first side surface S7 is a convex surface, and its second side surface S8 is a convex surface.

[0395] The fifth lens L5 has negative refractive power, and its first side surface S8 is concave, and its second side surface S9 is concave.

[0396] The sixth lens L6 has positive refractive power, and its first side surface S9 is a convex surface, and its second side surface S10 is a convex surface.

[0397] The seventh lens L7 has negative refractive power, and its first side surface S11 is convex, and its second side surface S12 is concave.

[0398] The first side surface S11 and the second side surface S12 of the seventh lens L7 are inversely curved.

[0399] Table 41 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 21. Table 42 shows the conic coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical mirror surface first side surface S11 and second side surface S12 of the aspherical lens seventh lens L7 that can be used in Example 21, wherein each aspherical surface shape can be defined by formula (1) given in the above Example 1.

[0400] Table 41

[0401]

[0402] Table 42

[0403]

[0404] In summary, Examples 1 to 21 satisfy the relationships shown in Table 43-1 and Table 43-2. ​​In Table 43-1 and Table 43-2, the units of F, TTL, D, D14, H, BFL, F1~F7, FR1, F456, Sag31, and Sag32 are millimeters (mm), the units of FOV are degrees (°), and the units of θ are radians (rad).

[0405] Table 43-1

[0406]

[0407]

[0408] Table 43-2

[0409]

[0410]

[0411] Fig. 22 The MTF curve diagram of the optical lens according to the embodiment provided by the present application is shown. The optical lenses in embodiments 1 to 21 of the present application can all achieve the following Fig. 22 The effect shown achieves good imaging quality and meets the high resolution capability of 8M (million) pixels.

[0412] 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.

[0413] 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, wherein the first side surface is convex and the second side surface is concave; a second lens having optical power, at least one side of which is concave; a third lens having positive refractive power; a fourth lens having positive power, wherein the first side surface is convex and the second side surface is convex; a fifth lens having negative optical power, wherein the first side surface is concave and the second side surface is concave; a sixth lens having positive optical power, wherein the second side surface thereof is convex, and the second side surface thereof is convex; and a seventh lens having optical power; Wherein, the fourth lens, the fifth lens and the sixth lens are glued together, and the optical lens satisfies: R1 / TTL≤0.55, 0.11≤d3 / TTL≤0.25, 2.5≤|F2 / F|, 3≤|F7 / F|, 2≤F456 / F≤20, FR1 / F≤5, Among them, F is the total effective focal length of the optical lens, FR1 is the effective focal length of the first side of the first lens, F2 is the effective focal length of the second lens, F7 is the effective focal length of the seventh lens, F456 is the combined focal length of the fourth lens, the fifth lens and the sixth lens, d3 is the center thickness of the third lens, TTL is the total optical length of the optical lens, and R1 is the radius of curvature of the first side of the first lens.

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

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

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

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

6. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: F3 / F≤7, 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 the following requirements: 0.01≤d23 / TTL≤0.25, Wherein, TTL is the total optical length of the optical lens, and d23 is the spacing distance between the second lens and the third lens along the optical axis.

8. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: 1.2≤R1 / F≤3.5, Wherein, R1 is the radius of curvature of the first side surface of the first lens, and F is the total effective focal length of the optical lens.

9. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: 4.5≤TTL / F≤9.5, Wherein, TTL is the total optical length of the optical lens, and F is the total effective focal length of the optical lens.

10. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: |(H-D14) / BFL|≤0.7, Among them, H is the image height corresponding to the maximum field angle of the optical lens, D14 is the maximum light clearance aperture of the second side surface of the seventh lens corresponding to the maximum field angle of the optical lens, and BFL is the optical back focus of the optical lens.

11. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: 45°≤(FOV×F) / H≤80°, 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.

12. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: 1.3≤R1 / R2≤4, Wherein, R1 is the curvature radius of the first side surface of the first lens, and R2 is the curvature radius of the second side surface of the first lens.

13. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: D / H / FOVx1°≤0.025, Among them, D is the maximum light clearance aperture of the first side surface of the first lens corresponding to the maximum field of view angle of the optical lens, H is the image height corresponding to the maximum field of view angle of the optical lens, and FOV is the maximum field of view angle of the optical lens.

14. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: 1.5≤(F4+F5+F6) / F≤4, Among them, F4 is the effective focal length of the fourth lens, F5 is the effective focal length of the fifth lens, and F6 is the effective focal length of the sixth lens.

15. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: |Sag31-Sag32| / d3≤0.4, Wherein, Sag31 is the sagittal height of the first side surface of the third lens, Sag32 is the sagittal height of the second side surface of the third lens, and d3 is the central thickness of the third lens.

16. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: F3 / F456≤3, Wherein, F3 is the effective focal length of the third lens, and F456 is the combined focal length of the fourth lens, the fifth lens and the sixth lens.

17. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: -3≤F1 / F≤-1, Wherein, F is the total effective focal length of the optical lens, and F1 is the effective focal length of the first lens.

18. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: 0.13≤d456 / TTL≤0.37, Wherein, d456 is the spacing distance from the first side surface of the fourth lens to the second side surface of the sixth lens along the optical axis, and TTL is the total optical length of the optical lens.

19. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: 0.1≤d air interval / TTL≤0.45, Wherein, d air space is the sum of the air spaces between the first lens to the seventh lens, and TTL is the total optical length of the optical lens.

20. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: -1.5≤(1 / F1+1 / F2) / (1 / F3+1 / F456)≤-0.35, Among them, 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, and F456 is the combined focal length of the fourth lens, the fifth lens and the sixth lens.

21. The optical lens according to claim 1, characterized in that: The optical lens meets at least one of the following requirements: 0.05≤BFL / TTL≤0.16,0.4rad≤(F θ) / D≤0.9rad,|F / R3|+|F / R4|≤2,F / ENPD≤2,d34 / TTL≤0.15,d67 / TTL≤0.02, Among them, F is the total effective focal length of the optical lens, BEL is the optical back focus 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 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, 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, ENPD is the entrance pupil diameter of the optical lens, d34 is the spacing distance between the third lens and the fourth lens along the optical axis, and d67 is the spacing distance between the sixth lens and the seventh lens along the optical axis.

22. The optical lens according to claim 1, characterized in that: The optical lens meets at least one of the following requirements: 0.12≤d3 / TTL≤0.2, 0.5≤F3 / F≤5.5, 0.1≤R1 / TTL≤0.45, 1.75≤FR1 / F≤3.5, 0.015 ≤d23 / TTL≤0.2, 0.07≤BFL / TTL≤0.11, 1.5≤R1 / F≤3.2, 6≤TTL / F≤8.5, 0.5rad≤(F θ) / D≤0.8rad, 0.01≤|(H-D14) / BFL|≤0.5, 48°≤(FOV×F) / H≤72°, 1.6≤R1 / R2≤3.5, 0.009≤D / H / FOVx1°≤0.02 2, 1.8≤(F4+F5+F6) / F≤3.2, 0.02≤|Sag31-Sag32| / d3≤0.25, 0.2≤|F / R3|+|F / R4|≤1.5, 1.75≤F / ENPD≤1.85, 0.05≤F3 / F456≤2.8, -2.8≤F1 / F≤-1.3, 2.5≤|F2 / F|≤140, 2.3≤F456 / F≤18, 3.5≤|F7 / F|≤125, 0.15≤d456 / TTL≤0.33, d34 / TTL≤0.1, 0.15≤dairspacing / TTL≤0.37, -1.3≤(1 / F1+1 / F2) / (1 / F3+1 / F456)≤-0.5, d67 / TTL≤0.016, 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, F6 is the effective focal length of the sixth lens, F7 is the effective focal length of the seventh lens, FR1 is the effective focal length of the first side surface of the first lens, F456 is the combined focal length of the fourth lens, the fifth lens and the sixth lens, TTL is the total optical length of the optical 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, 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, FOV is the maximum field of view of the optical lens, D is the maximum aperture of the first side surface of the first lens corresponding to the maximum field of view of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, θ is the radian value corresponding to the maximum field of view of the optical lens, D14 is the maximum clear aperture of the second side surface of the seventh lens corresponding to the maximum field of view of the optical lens, BFL is the optical back focus of the optical lens, Sag31 is the sagittal height of the first side surface of the third lens, Sag32 is the sagittal height of the second side surface of the third lens, d3 is the center thickness of the third lens, ENPD is the entrance pupil diameter of the optical lens, d23 is the spacing distance between the second lens and the third lens along the optical axis, d34 is the spacing distance between the third lens and the fourth lens along the optical axis, d67 is the spacing distance between the sixth lens and the seventh lens along the optical axis, d456 is the spacing distance from the first side surface of the fourth lens to the second side surface of the sixth lens along the optical axis, and d air spacing is the sum of the air spacings between the first lens to the seventh lens.

23. The optical lens according to claim 1, characterized in that: The optical lens meets at least one of the following requirements: 0.125≤d3 / TTL≤0.185, 1.931≤F3 / F≤4.946, 0.225≤R1 / TTL≤0.430, 2.166≤FR1 / F≤3.188, 0.021≤ d23 / TTL≤0.164, 0.080≤BFL / TTL≤0.103, 1.776≤R1 / F≤2.905, 6.752≤TTL / F≤8.245, 0.597rad≤(F θ) / D≤0.784rad, 0.028≤|(H-D14) / BFL|≤0.410, 52.208≤(FOV×F) / H≤66.076, 2.065≤R1 / R2≤3.181, 0.011≤D / H / FOVx1°≤0 .019, 2.215≤(F4+F5+F6) / F≤2.999, 0.058≤|Sag31-Sag32| / d3≤0.195, 0.413≤|F / R3|+|F / R4|≤1.221, 0.146≤F3 / F456≤1. 799, -2.629≤F1 / F≤-1.721, 3.761≤|F2 / F|≤89.128, 2.67≤F456 / F≤13.182, 5.805≤|F7 / F|≤80, 0.190≤d456 / TTL≤0.293, 0.003≤d34 / TTL≤0.087, 0.204≤dairspacing / TTL≤0.335, -1.185≤(1 / F1+1 / F2) / (1 / F3+1 / F456)≤-0.682, 0.003≤d67 / TTL≤0.012, 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, F6 is the effective focal length of the sixth lens, F7 is the effective focal length of the seventh lens, FR1 is the effective focal length of the first side surface of the first lens, F456 is the combined focal length of the fourth lens, the fifth lens and the sixth lens, TTL is the total optical length of the optical 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, 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, FOV is the maximum field of view of the optical lens, D is the maximum aperture of the first side surface of the first lens corresponding to the maximum field of view of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, θ is the radian value corresponding to the maximum field of view of the optical lens, D14 is the maximum clear aperture of the second side surface of the seventh lens corresponding to the maximum field of view of the optical lens, BFL is the optical back focus of the optical lens, Sag31 is the sagittal height of the first side surface of the third lens, Sag32 is the sagittal height of the second side surface of the third lens, d3 is the center thickness of the third lens, ENPD is the entrance pupil diameter of the optical lens, d23 is the spacing distance between the second lens and the third lens along the optical axis, d34 is the spacing distance between the third lens and the fourth lens along the optical axis, d67 is the spacing distance between the sixth lens and the seventh lens along the optical axis, d456 is the spacing distance from the first side surface of the fourth lens to the second side surface of the sixth lens along the optical axis, and d air spacing is the sum of the air spacings between the first lens to the seventh lens.

24. An electronic device, characterized in that: The optical lens comprises any one of claims 1 to 23, 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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