Optical lenses and electronic equipment

Abstract

The present application discloses an optical lens and an electronic device. The optical lens includes, in order from the first side to the second side along the optical axis: a first lens with negative optical power, the first side surface is convex, and the second side surface is concave; a second lens with negative optical power, the first side surface is convex, and the second side surface is concave; a third lens with positive optical power; a fourth lens with optical power; a fifth lens with optical power; one of the fourth lens and the fifth lens has positive optical power, and the other has negative optical power; a sixth lens with positive optical power. The optical lens satisfies: 0.4≤F1 / F2≤0.9, |(H‑F×θ) / (F×θ)|≤0.08, and F3 / d4≤9, 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, H is the image height corresponding to the maximum field angle of the optical lens, θ is the radian value corresponding to the maximum field angle of the optical lens, and d4 is the spacing distance between the second lens and the third lens along the optical axis.

Description

Technical Field

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

[0002] With the continuous progress of science and technology and the continuous development of society, the market has higher and higher requirements for optical lenses used in various scenarios. However, the optical lenses in related technologies, especially those used in vehicles, have the following problems:

[0003] 1) When used in high and low temperature environments, the optical lens has poor system stability, which can easily lead to large changes in the lens surface shape, affecting the use effect of the optical lens, and even causing the situation where the lens resolution requirements under high and low temperature conditions cannot be met; 2) The ghost image is strong, which can easily cause the driving assistance system to misjudge the current situation and cannot meet the driver's needs to monitor the current situation; 3) The lens itself has large distortion, and when faced with more complex actual road detection situations, the imaging is severely deformed; 4) The resolution capability is poor.

[0004] Therefore, the current market needs an optical lens that can achieve at least one of the following: small distortion, good temperature performance, low ghosting, and high resolution. Summary of the invention

[0005] 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 is convex and whose second side is concave; a second lens with negative optical power, whose first side is convex and whose second side is concave; a third lens with positive optical power; a fourth lens with optical power; a fifth lens with optical power; one of the fourth lens and the fifth lens has positive optical power and the other has negative optical power; and a sixth lens with positive optical power. The optical lens satisfies: 0.4≤F1 / F2≤0.9, |(HF×θ) / (F×θ)|≤0.08, and F3 / d4≤9, 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, H is the image height corresponding to the maximum field angle of the optical lens, θ is the radian value corresponding to the maximum field angle of the optical lens, and d4 is the spacing distance between the second lens and the third lens along the optical axis.

[0006] Another 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 is convex and whose second side is concave; a second lens with negative optical power, whose first side is convex and whose second side is concave; a third lens with positive optical power; a fourth lens with optical power; a fifth lens with optical power; one of the fourth lens and the fifth lens has positive optical power and the other has negative optical power; and a sixth lens with positive optical power. The optical lens satisfies at least one of the following conditional formulas: BFL / TTL≥0.22, F6 / F≥2.8, wherein BFL is the optical back focus of the optical lens, TTL is the total optical length of the optical lens, F is the total effective focal length of the optical lens, and F6 is the effective focal length of the sixth lens.

[0007] Another 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 is convex and whose second side is concave; a second lens with negative optical power, whose first side is convex and whose second side is concave; a third lens with positive optical power; a fourth lens with positive optical power and a fifth lens with negative optical power, or a fourth lens with negative optical power and a fifth lens with positive optical power; and a sixth lens with positive optical power. The optical lens satisfies at least one of the following conditions: -4≤F2 / F≤-1.5, F6 / F≥2.8, -1.5≤F2 / F6≤-0.2, wherein F is the total effective focal length of the optical lens, F2 is the effective focal length of the second lens, and F6 is the effective focal length of the sixth lens.

[0008] Another 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 is convex and whose second side is concave; a second lens with negative optical power, whose first side is convex and whose second side is concave; a third lens with positive optical power; a fourth lens with optical power; a fifth lens with optical power; one of the fourth lens and the fifth lens has positive optical power and the other has negative optical power; and a sixth lens with positive optical power. The optical lens satisfies: 0.03≤d4 / TTL≤0.2, wherein d4 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.

[0009] In one embodiment, the first side surface of the third lens is a convex surface, and the second side surface is a convex surface or a concave surface.

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

[0011] In one embodiment, the fifth lens has positive optical power, and its first side surface is convex, and its second side surface is convex; or the fifth lens has negative optical power, its first side surface is concave, and its second side surface is concave or convex.

[0012] In one embodiment, the first side surface of the sixth lens is convex, and the second side surface is convex; or the first side surface is convex, and the second side surface is concave; or the first side surface is convex, and the second side surface is a plane; or the first side surface is concave, and the second side surface is convex.

[0013] In one embodiment, the optical lens satisfies: 0.5≤R1 / R3≤2, wherein R1 is the radius of curvature of the first side surface of the first lens, and R3 is the radius of curvature of the first side surface of the second lens.

[0014] In one embodiment, the optical lens satisfies: 0.5≤R2 / R4≤2, wherein R2 is the radius of curvature of the second side surface of the first lens, and R4 is the radius of curvature of the second side surface of the second lens.

[0015] In one embodiment, the optical lens satisfies: 0.5≤(R1 / R3) / (R2 / R4)≤2, wherein R1 is the radius of curvature of the first side surface of the first lens, R3 is the radius of curvature of the first side surface of the second lens, R2 is the radius of curvature of the second side surface of the first lens, and R4 is the radius of curvature of the second side surface of the second lens.

[0016] In one embodiment, the optical lens satisfies: -4≤F1 / F≤-0.8, wherein F is the total effective focal length of the optical lens, and F1 is the effective focal length of the first lens.

[0017] In one embodiment, the optical lens satisfies: -4≤F2 / F≤-1.5, wherein F is the total effective focal length of the optical lens, and F2 is the effective focal length of the second lens.

[0018] In one embodiment, the optical lens satisfies: -5≤F2 / R4<0, wherein F2 is the effective focal length of the second lens, and R4 is the radius of curvature of the second side surface of the second lens.

[0019] In one embodiment, the optical lens satisfies: F3 / F≤6, wherein F is the total effective focal length of the optical lens, and F3 is the effective focal length of the third lens.

[0020] In one embodiment, the optical lens satisfies: |F45| / F≥1.5, wherein F is the total effective focal length of the optical lens, and F45 is the combined focal length of the fourth lens and the fifth lens.

[0021] In one embodiment, the optical lens satisfies: 0.03≤d4 / TTL≤0.2, wherein d4 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.

[0022] In one embodiment, the optical lens satisfies: -1.5≤F2 / F6≤-0.2, wherein F2 is the effective focal length of the second lens, and F6 is the effective focal length of the sixth lens.

[0023] In one embodiment, the optical lens satisfies: F6 / F≥2.8, wherein F is the total effective focal length of the optical lens, and F6 is the effective focal length of the sixth lens.

[0024] In one embodiment, the optical lens satisfies: BFL / TTL≥0.22, wherein BFL is the optical back focus of the optical lens, and TTL is the total optical length of the optical lens.

[0025] In one embodiment, the optical lens satisfies: |D12-H| / BFL≤0.45, wherein D12 is the maximum light clearance aperture of the second side surface of the sixth lens corresponding to the maximum field angle of the optical lens, BFL is the optical back focus of the optical lens, and H is the image height corresponding to the maximum field angle of the optical lens.

[0026] In one embodiment, the optical lens satisfies at least one of the following conditions: 1≤R1 / R3≤1.0957; 0.9085≤R2 / R4≤1.0698; 1.0096≤(R1 / R3) / (R2 / R4)≤1.1007; -2.3679≤F1 / F≤-1.8367; -3.3378≤F2 / F≤-2.5238; 0.6466≤F1 / F2≤0.7413; 0.0013≤|(HF× θ) / (F×θ)|≤0.0581; F / H≥0.2; 0.4513≤F / H≤0.4919; (FOV×F) / H≥50°; 54.1503°≤(FOV×F) / H≤59.030 9°; -3.2297≤F2 / R4≤-2.9079; 1.5459≤F3 / F≤4.3744; 1.9111≤F3 / d4≤8.1832; 2.9446≤|F45| / F≤34.2 995; 0.0405≤d4 / TTL≤0.1296; (d8+d9) / TTL≤0.35; 0.1095≤(d8+d9) / TTL≤0.246; -1≤(R2-R3) / (R2+ R3)≤0; -0.5198≤ (R2-R3) / (R2+R3)≤-0.4305; -1.0427≤F2 / F6≤-0.5136; TTL / F≤8.5; 5.9953≤TTL / F≤ 7.7313; TTL / H / FOV×180°≤9; 4.148≤TTL / H / FOV×180°≤5.6415; F / ENPD≤2; 1.915≤F / ENPD≤1.9151; 3 .1172≤F6 / F≤4.9359; 0.2398≤BFL / TTL≤0.3291; |D12-H| / BFL≤0.45; 0.0066≤|D12-H| / BFL≤0.3682. Wherein, R1 is the curvature radius of the first side surface of the first lens, R3 is the curvature radius of the first side surface of the second lens, R2 is the curvature radius of the second side surface of the first lens, R4 is the curvature radius of the second side surface of the second lens, 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, F45 is the combined focal length of the fourth lens and the fifth lens, F6 is the effective focal length of the sixth 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, FOV is the maximum field of view of the optical lens, d4 is the spacing distance between the second lens and the third lens along the optical axis, TTL is the total optical length of the optical lens, d8 is the center thickness of the fourth lens, d9 is the center thickness of the fifth lens, ENPD is the entrance pupil diameter of the optical lens, BFL is the optical back focus of the optical lens, and D12 is the maximum clear aperture of the second side surface of the sixth lens corresponding to the maximum field of view of the optical lens.

[0027] In one embodiment, the optical lens satisfies at least one of the following conditions: 0.97≤R1 / R3≤1.13; 0.85≤R2 / R4≤1.12; 0.98≤(R1 / R3) / (R2 / R4)≤1.13; -2.53≤F1 / F≤-1.65; -3.6≤F2 / F≤-2.3; 0.61≤F1 / F2≤0.77; 0.001≤|(HF*θ) / (F*θ)|≤0.08; 0.44≤F / H≤0.5; 53°≤(FOV×F) / H≤61°; -3.33≤F2 / R4≤-2.8; 1≤F3 / F≤5.7; 0. 5≤F3 / d4≤10.5; 1.5≤|F45| / F≤50; 0.03≤d4 / TTL≤0.17; 0.06≤(d8+d9) / TTL≤0.28; -0.55≤(R2-R3) / (R2+R3)≤-0.4; -1.2≤F2 / F6≤-0.3 5; 5.35≤TTL / F≤8.2; 3.7≤TTL / H / FOV*180°≤6.2; 1.9≤F / ENPD≤1.95; 2.8≤F6 / F≤5.8; 0.22≤BFL / TTL≤0.36; 0.001≤|D12-H| / BFL≤0.45. Wherein, R1 is the curvature radius of the first side surface of the first lens, R3 is the curvature radius of the first side surface of the second lens, R2 is the curvature radius of the second side surface of the first lens, R4 is the curvature radius of the second side surface of the second lens, 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, F45 is the combined focal length of the fourth lens and the fifth lens, F6 is the effective focal length of the sixth 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, FOV is the maximum field of view of the optical lens, d4 is the spacing distance between the second lens and the third lens along the optical axis, TTL is the total optical length of the optical lens, d8 is the center thickness of the fourth lens, d9 is the center thickness of the fifth lens, ENPD is the entrance pupil diameter of the optical lens, BFL is the optical back focus of the optical lens, and D12 is the maximum clear aperture of the second side surface of the sixth lens corresponding to the maximum field of view of the optical lens.

[0028] The optical lens according to the embodiment of the present application includes six lenses with optical power, which are respectively a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens arranged in sequence from the first side to the second side along the optical axis, wherein the first lens with negative optical power has a convex first side surface and a concave second side surface; the second lens with negative optical power has a convex first side surface and a concave second side surface; the third lens with positive optical power; the fourth lens with positive optical power and the fifth lens with negative optical power, or the fourth lens with negative optical power and the fifth lens with positive optical power A fifth lens; and a sixth lens with positive power; simultaneously controlling the effective focal length F1 of the first lens and the effective focal length F2 of the second lens to satisfy 0.4≤F1 / F2≤0.9, the effective focal length F3 of the third lens and the spacing distance d4 between the second lens and the third lens along the optical axis to satisfy F3 / d4≤9, the image height H corresponding to the maximum field angle of the optical lens, and the arc value θ corresponding to the maximum field angle of the optical lens to satisfy |(HF×θ) / (F×θ)|≤0.08, can enable the optical lens to achieve at least one of small distortion, good temperature performance, weak ghost images, high resolution, etc.

[0029] According to the optical lens of the embodiment of the present application, the first lens with negative optical focal length has a convex first side surface and a concave second side surface; the second lens with negative optical focal length has a convex first side surface and a concave second side surface; at the same time, the effective focal length F1 of the first lens and the effective focal length F2 of the second lens are controlled to satisfy 0.4≤F1 / F2≤0.9, the image height H corresponding to the maximum field of view angle of the optical lens and the arc value θ corresponding to the maximum field of view angle of the optical lens satisfy |(HF×θ) / (F×θ)|≤0.08, so that the optical lens can achieve at least one of small distortion, high resolution, etc.

[0030] Another aspect of the present application provides an electronic device, which includes the optical lens provided by the present application and an imaging element for converting an optical image formed by the optical lens into an electrical signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] 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:

[0032] Figure 1 , Figure 3 , Figure 5 , Figure 7 , Fig. 9 , Fig.11 , Fig.13 , Fig.15 , Fig.17 , Fig.19 , Fig.21 , Fig.23 , Fig.25 , Fig. 27 , Fig.29 , Fig.31 Schematic diagrams of the structures of optical lenses according to Embodiments 1 to 16 of the present application are respectively shown;

[0033] Figure 2 , Figure 4 , Figure 6 , Figure 8 , Fig.10 , Fig.12 , Fig.14 , Fig.16 , Fig.18 , Fig. 20 , Fig. 22 , Fig.24 , Fig.26 , Fig.28 , Fig.30 , Fig.32 Schematic diagrams of distortion curves of optical lenses according to Embodiments 1 to 16 of the present application are respectively shown. DETAILED DESCRIPTION

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] The features, principles and other aspects of the present application are described in detail below.

[0043] In an exemplary embodiment, the optical lens includes, for example, six lenses having optical power, namely, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, which are arranged in sequence from the first side to the second side along the optical axis.

[0044] 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.

[0045] 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.

[0046] 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).

[0047] In an exemplary embodiment, the first lens may have a negative optical power, and its first side surface may be a convex surface, and its second side surface may be a concave surface. The first lens having a negative optical power can achieve divergence of light, disperse the central light and the edge light of each field of view, reduce distortion, and increase luminous flux; the first side surface of the first lens is a convex surface, which can converge light, collect as much light of a large field of view as possible to enter the rear optical system, increase the amount of light passing, and collect the direction of the edge large-angle light; the image side surface is a concave surface, which can make the large-angle light passing through the first side surface of the first lens diverge quickly, and the light emitted through the second side surface of the first lens can make the subsequent optical system have a larger light receiving surface, which is beneficial for the rear optical system to correct the aberration of large-angle light, reduce distortion, achieve high resolution, make the light diverge smoothly, be insensitive to turning light, and reduce the sensitivity of the first lens.

[0048] In an exemplary embodiment, the second lens may have a negative optical power, and its first side surface may be a convex surface, and its second side surface may be a concave surface. The second lens having a negative optical power is conducive to the second lens receiving the light passing through the first lens, and further smoothly diverging the light collected by the first lens, which is conducive to expanding the width of the light beam to reach the required size for imaging. The first side surface of the second lens is convex, which is conducive to the marginal field of view light entering the second lens and smoothly reaching the rear optical system, that is, it is conducive to receiving the light emitted by the first lens, reducing the loss of light energy, and achieving a large field of view; the second side surface of the second lens is concave, which can appropriately diverge the light emitted from the second side surface of the first lens, so that the peripheral light is smoothly transferred and reaches a higher imaging position, which is not only conducive to reducing distortion and reducing the sensitivity of the optical lens, but also increasing the light throughput of the optical lens. And the surface shape and optical power of the first lens and the second lens are matched as described above, so that two meniscus lenses (i.e. convex-concave lenses) with negative optical power in the same bending direction are matched, so that the emitted light can be relatively smooth, which is conducive to achieving small distortion of the optical lens.

[0049] In an exemplary embodiment, an aperture for limiting the light beam may be provided between the third lens and the fourth lens to further improve the imaging quality of the optical lens. The aperture is conducive to converging the light entering the optical system, reducing the rear port diameter of the optical system, and reducing the assembly sensitivity of the system. However, it should be noted that the position of the aperture disclosed herein is only an example and not a limitation; in alternative embodiments, the aperture may also be provided at other positions according to actual needs.

[0050] In an exemplary embodiment, the third lens may have positive focal power, and its first side surface may be convex, and its second side surface may be convex. The third lens has positive focal power, and cooperates with the second lens having negative focal power to further converge the light passing through the second lens, lower the height of the peripheral light, and is conducive to reducing the diameter of the rear lens. Making the first side surface of the third lens convex and the second side surface convex can converge the light twice, which can not only smoothly transfer the light collected by the front system to the rear system, but also facilitate preliminary aberration correction of the incident light and reduce the sensitivity of the optical lens, and can also make the light turn and gather to achieve a reduction in the diameter of the rear port.

[0051] In an exemplary embodiment, the third lens may have positive focal length, and its first side may be convex and its second side may be concave. The third lens has positive focal length, and when combined with the second lens having negative focal length, it can further converge the light passing through the second lens, lower the height of the peripheral light, and help reduce the aperture of the rear lens. Making the first side of the third lens convex is conducive to lowering the height of the light in the third lens, avoiding light divergence, and helping to achieve a miniaturized design of the optical lens, and further reducing the sensitivity of the optical lens, while helping to correct aberrations and improve resolution quality. Making the second side of the third lens concave can receive and diverge the light passing in front of the second side of the third lens, so that the edge field of view light beam is higher and wider when it reaches the fourth lens, thereby improving the relative illumination of the edge field of view.

[0052] In an exemplary embodiment, the fourth lens and the fifth lens are matched with positive and negative optical powers, that is, the fourth lens with positive optical power is matched with the fifth lens with negative optical power, or the fourth lens with negative optical power is matched with the fifth lens with positive optical power, which is beneficial to correct the aberration of the center and edge light of each field of view, thereby achieving high resolution of the optical lens.

[0053] In an exemplary embodiment, the fourth lens can be bonded with the fifth lens, which can effectively correct chromatic aberration, reduce the total length of the optical lens, and allow the light to smoothly transition to the rear system, and optimize the CRA, illumination, distortion, etc. of the optical system. The double bonded lens formed by bonding the fourth lens and the fifth lens also has the following advantages: the fourth lens can be made of a material with a high refractive index and a low Abbe number, and the fifth lens can be made of a material with a relatively low refractive index and a high Abbe number, so that the lenses with these two materials can be bonded to effectively correct the chromatic aberration of the optical system; the number of assembly components between the fourth lens and the fifth lens is reduced, which is conducive to reducing the process and the overall weight, and reducing the cost; the light energy loss caused by the reflection between the fourth lens and the fifth lens is reduced, the illumination of the image plane is improved, and the ghost image is weakened; because the light transitions smoothly when passing through the bonding surface, the tolerance sensitivity of the fourth lens and the fifth lens is low, so the tolerance sensitivity of the fourth lens and the fifth lens during assembly can be reduced; the fourth lens and the fifth lens are both glass lenses, and the focal length is reasonably allocated, which is conducive to achieving thermal compensation and improving the performance of the optical lens at different temperatures.

[0054] In an exemplary embodiment, the fourth lens may have a negative optical power, and its first side surface may be a concave surface, and its second side surface may be a concave surface. The fourth lens has a negative optical power, which is conducive to receiving the light passing through the third lens, and the negative optical power has a divergent effect on the light, which can make the subsequent optical system have a larger light receiving surface, and when the optical power is reasonably distributed, it is conducive to reducing aberrations and improving the optical performance of the optical lens. The fourth lens with negative optical power and the fifth lens with positive optical power cooperate to effectively correct the aberration of the optical lens, improve image quality, and optimize optical properties such as distortion and CRA. The first side surface of the fourth lens is concave, and the second side surface is concave, so that the light has a divergent trend before and after passing through the fourth lens, and the edge light and the central light of each field of view are clearly distinguished, which is conducive to the aberration correction of the center and edge light of each field of view, so as to reduce distortion and achieve high resolution of the optical lens.

[0055] In an exemplary embodiment, the fourth lens may have a negative optical power, and its first side surface may be a convex surface, and its second side surface may be a concave surface. The fourth lens has a negative optical power, which is conducive to receiving the light passing through the third lens, and the negative optical power has a divergent effect on the light, which can make the subsequent optical system have a larger light receiving surface, and when the optical power is reasonably allocated, it is conducive to reducing aberrations and improving the optical performance of the optical lens. The fourth lens with negative optical power and the fifth lens with positive optical power cooperate to effectively correct the aberration of the optical lens, improve image quality, and optimize optical performance such as distortion and CRA. The first side surface of the fourth lens is convex, so that the edge field of view light is deflected toward the optical axis after passing through the first side surface of the fourth lens, which can reduce the back port diameter. The second side surface of the fourth lens is concave, which is conducive to diverging the light passing through the second side surface of the fourth lens, increasing the incident angle of the peripheral light to the first side surface of the fifth lens, and is conducive to improving the relative illumination of the peripheral field of view.

[0056] In an exemplary embodiment, the fourth lens may have positive focal power, and its first side surface may be convex, and its second side surface may be convex. The fourth lens has positive focal power, which is conducive to light convergence. The fourth lens with positive focal power and the fifth lens with negative focal power are matched to adjust the optical path difference between different fields of view, improve the resolution, and help the light to enter the rear system smoothly, further reduce the field curvature, and correct the off-axis point aberration of the optical lens. The first side surface of the fourth lens is convex, and the second side surface is convex, which can converge light, reduce the aperture of the rear group lens, smoothly transfer the light collected by the front system to the rear system, reduce the sensitivity of the system, and at the same time reduce the deflection of light through the second side surface of the fourth lens, reduce the aberration caused by the cemented part of the fourth lens and the fifth lens, and enhance the correction effect of the chromatic aberration of the optical lens.

[0057] In an exemplary embodiment, the fifth lens may have positive focal length, and its first side surface may be convex, and its second side surface may be convex. The fifth lens has positive focal length, which is conducive to light convergence, and cooperates with the fourth lens having negative focal length, which can further reduce aberrations and improve the resolution of the optical lens, while allowing the light to converge effectively and smoothly at the end, so that the light reaches the imaging surface smoothly. The first side surface of the fifth lens is convex, and the second side surface is convex, which can converge the light, and cooperate with the convex side surface of the sixth lens, which can further reduce the field curvature, reduce the sensitivity of the optical lens, and allow the light to reach the imaging surface smoothly; it can also make the divergent light reasonably converge to the rear system, and make the light turn and gather to reach the imaging surface faster, reducing the total optical length of the optical lens; and it can make the divergent edge field light converge and smoothly enter the rear system, thereby achieving an improvement in the relative illumination of the edge field.

[0058] In an exemplary embodiment, the fifth lens may have a negative optical power, and its first side surface may be a concave surface, and its second side surface may be a convex surface. The fifth lens has a negative optical power, which can diverge light, so that the subsequent optical system has a larger light receiving surface, and can be glued together with the fourth lens having a positive optical power to effectively eliminate aberrations and improve the resolution of the optical lens. Making the first side surface of the fifth lens a concave surface is conducive to receiving the light emitted by the fourth lens, and diverging the light converged by the third lens and the fourth lens, so that the light can reach a higher imaging position, which is conducive to a small CRA of the optical lens. Making the second side surface of the fifth lens a convex surface can smoothly converge the light, shorten the distance for the light to reach the imaging surface, which is conducive to reducing the total optical length of the optical lens, and further conducive to reducing the diameter of the rear port of the lens.

[0059] In an exemplary embodiment, the fifth lens may have a negative optical power, and its first side surface may be a concave surface, and its second side surface may be a concave surface. The fifth lens has a negative optical power, and can diverge the light emitted by the fourth lens, so that the light in the edge field of view tends to rise, which is conducive to the image point on the imaging surface being away from the optical axis, so as to achieve the effect of matching with a large chip, obtain a larger picture, and be glued together with the fourth lens with positive optical power, which can effectively eliminate aberrations and improve the resolution of the optical lens. The first side surface of the fifth lens is concave, and the second side surface is concave, which can diverge the light, so that the light can reach a higher imaging position, so that the incident angle of the light entering the chip is reduced, which helps to improve the illumination and reduce chromatic aberration.

[0060] In an exemplary embodiment, the sixth lens may have positive focal length, and its first side surface may be convex, and its second side surface may be convex. The sixth lens has positive focal length, which is conducive to light convergence, so that the light trend smoothly transitions to the rear, reduces the height of the light incident to the rear, slows down the upward trend of the light, avoids the light energy loss caused by the large angle between the main light of the chip and the large field of view when the light reaches the imaging surface, is conducive to improving the illumination of the edge field of view, and is conducive to achieving a short TTL (total optical length of the optical lens). Making the first side surface of the sixth lens convex and the second side surface convex is conducive to collecting the light passing through the fifth lens, reducing the height of the light incident to the rear system, and converging more light, thereby improving the relative illumination of the optical lens.

[0061] In an exemplary embodiment, the sixth lens may have positive focal length, and its first side surface may be convex, and its second side surface may be concave. The sixth lens has positive focal length, which is conducive to light convergence, so that the light trend is smoothly transitioned to the rear, the height of the light incident to the rear is reduced, the upward trend of the light is slowed down, and the light energy loss caused by the large angle between the main light of the chip and the large field of view light when reaching the imaging surface is avoided, which is conducive to improving the illumination of the edge field of view and achieving short TTL (optical total length of the optical lens). The first side surface of the sixth lens is convex, which is convenient for collecting the light passing through the fifth lens, and is conducive to light convergence, so that the light trend is smoothly transitioned to the rear system, and the height of the light incident to the rear is reduced, thereby reducing the caliber of the back-end system; the second side surface of the sixth lens is concave, and the light entering from the first side surface of the sixth lens is smoothly diverged, which is conducive to improving the resolution ability of the optical lens, making the light trend stable, and being able to disperse the central light and the edge light of each field of view, increase the illumination of the optical lens, and at the same time is conducive to the correction of the aberration of the edge light and the central light, so as to achieve high resolution of the optical lens.

[0062] In an exemplary embodiment, the sixth lens may have positive power, and its first side surface may be a convex surface, and its second side surface may be a plane surface. The sixth lens has positive power, which is conducive to light convergence, so that the light trend transitions smoothly to the rear, reduces the height of the light incident to the rear, slows down the upward trend of the light, avoids the light energy loss caused by the large angle between the main ray of the chip and the large angle of the main ray of the chip when the light of the large field of view reaches the imaging surface, and is conducive to improving the illumination of the edge field of view and achieving a short TTL (the total optical length of the optical lens). Making the first side surface of the sixth lens convex and the second side surface flat is conducive to the smooth trend of the light, and can improve the astigmatism and field curvature of the optical lens imaging, improve the resolution of the optical lens, and can also reduce the cone angle and the main ray incident angle when the edge field of view light beam reaches the imaging surface, and improve the resolution of the optical lens.

[0063] In an exemplary embodiment, the sixth lens may have positive focal length, and its first side surface may be concave, and its second side surface may be convex. The sixth lens has positive focal length, which is conducive to light convergence, so that the light trend transitions smoothly to the rear, reduces the height of the light incident to the rear, slows down the upward trend of the light, avoids the light energy loss caused by the large angle between the main light of the chip and the large field of view when the light reaches the imaging surface, is conducive to improving the illumination of the edge field of view, and is conducive to achieving a short TTL (total optical length of the optical lens). The first side surface of the sixth lens is concave, which can diverge the light incident from the front system, so that the peripheral light and the central light turn upward and reach a higher imaging position; the second side surface of the sixth lens is convex, which can converge the light, improve the relative illumination of the optical lens, smooth the light trend, increase the back focus, and reduce the CRA.

[0064] Figure 1The optical lens provided by the present application can be used as a vehicle-mounted lens, for example. Figure 1 IMA represents an imaging surface, and light from an object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface arranged on the second side, wherein an image sensor chip is arranged on the imaging surface. It should be understood that the optical lens provided in the present application can also be used as, for example, a projection lens or a laser radar transmitting end lens. In this case, Figure 1 Here, IMA represents an image source plane, and light from the image source plane sequentially passes through the surfaces S14 to S1 and is finally projected onto a projection plane (not shown) disposed on the first side.

[0065] In an exemplary embodiment, the optical lens may satisfy: 0.5≤R1 / R3≤2, wherein R1 is the radius of curvature of the first side surface of the first lens, and R3 is the radius of curvature of the first side surface of the second lens. In an exemplary embodiment, the first lens and the second lens are meniscus lenses (i.e., convex-concave lenses) with negative optical power in the same bending direction, so that the first side surfaces of the first lens and the second lens are both convex, and the radius of curvature of the first side surfaces of the first lens and the second lens are controlled to be close, that is, the above conditional formula is satisfied, which is conducive to converging light, collecting light with a large field of view, and reducing the light energy loss of the optical lens, and is conducive to the first side surface of the second lens receiving the light emitted by the first lens, so that the light smoothly transitions to the rear optical system, and reduces the edge field of view distortion. Preferably, the optical lens may further satisfy: Preferably, the optical lens may further satisfy: 0.75≤R1 / R3≤1.5, so as to achieve small distortion of the optical lens. More preferably, the optical lens may further satisfy: 0.97≤R1 / R3≤1.13, which is more conducive to achieving small distortion of the optical lens. More preferably, the optical lens can further satisfy: 1≤R1 / R3≤1.0957, which is more conducive to achieving small distortion of the optical lens.

[0066] In an exemplary embodiment, the optical lens may satisfy: 0.5≤R2 / R4≤2, wherein R2 is the radius of curvature of the second side of the first lens, and R4 is the radius of curvature of the second side of the second lens. In an exemplary embodiment, the first lens and the second lens are meniscus lenses (i.e., convex-concave lenses) with negative optical power in the same bending direction, so that the second side of the first lens and the second lens are both concave, and the radius of curvature of the second side of the first lens and the second lens is controlled to be close, that is, the above conditional formula is satisfied, so that the first side of the first lens and the second lens converges the small angle light to the second side of the first lens and the second lens respectively, so that the light diverges on the second side of the first lens and the second lens, and the distance between the edge light is pulled apart, the focal length and the image height are balanced, and it is conducive to achieving small distortion of the optical lens. Preferably, the optical lens may further satisfy: 0.75≤R2 / R4≤1.5, so as to achieve small distortion of the optical lens. More preferably, the optical lens may further satisfy: 0.85≤R2 / R4≤1.12, so as to achieve small distortion of the optical lens. More preferably, the optical lens can further satisfy: 0.9085≤R2 / R4≤1.0698, thereby achieving small distortion of the optical lens.

[0067] In an exemplary embodiment, the optical lens may satisfy: 0.5≤(R1 / R3) / (R2 / R4)≤2, wherein R1 is the radius of curvature of the first side surface of the first lens, R3 is the radius of curvature of the first side surface of the second lens, R2 is the radius of curvature of the second side surface of the first lens, and R4 is the radius of curvature of the second side surface of the second lens. In an exemplary embodiment, the first lens and the second lens are meniscus lenses (i.e., convex-concave lenses) with negative optical power in the same bending direction, so that the second side surfaces of the first lens and the second lens are both concave, the first side surfaces of the first lens and the second lens are both convex, and the radius of curvature of the first side surfaces of the first lens and the second lens are controlled to be close, and the radius of curvature of the second side surfaces of the first lens and the second lens are controlled to be close, that is, the above conditional formula is satisfied, which is conducive to the divergence of the edge field of view light, the smooth transition of the center field of view light, the realization of small distortion of the optical lens, and the improvement of the resolution ability of the optical lens. Preferably, the optical lens may further satisfy: 0.75≤(R1 / R3) / (R2 / R4)≤1.5, so as to realize small distortion and high resolution of the optical lens. More preferably, the optical lens can further satisfy: 0.98≤(R1 / R3) / (R2 / R4)≤1.13, which is more conducive to achieving small distortion and high resolution of the optical lens. More preferably, the optical lens can further satisfy: 1.0096≤(R1 / R3) / (R2 / R4)≤1.1007, which is more conducive to achieving small distortion and high resolution of the optical lens.

[0068] In an exemplary embodiment, the optical lens may satisfy: -4≤F1 / F≤-0.8, where F is the total effective focal length of the optical lens, and F1 is the effective focal length of the first lens. The first lens has a negative optical power, so that the optical lens satisfies the above conditional formula, and controls the ratio of the effective focal length of the first lens to the total effective focal length of the optical lens, which is conducive to the rapid divergence of light, so that the rear lens has a larger receiving surface, and reduces the generation of distortion; and is conducive to narrowing the distance between the first lens and the second lens, and reducing the total optical length of the optical lens. Specifically: setting a lower limit of the ratio of the effective focal length of the first lens to the total effective focal length of the optical lens is conducive to ensuring that the first lens can collect light with a large field of view to enter the optical system; setting an upper limit of the ratio of the effective focal length of the first lens to the total effective focal length of the optical lens is conducive to ensuring that the light can smoothly transition to the second lens, reduce aberrations, and improve the resolution of the optical lens. Preferably, the optical lens can further satisfy: -3≤F1 / F≤-1.2, so as to achieve a large field of view and high resolution of the optical lens. More preferably, the optical lens can further satisfy: -2.53≤F1 / F≤-1.65, which is more conducive to achieving a large field of view and high resolution of the optical lens. More preferably, the optical lens can further satisfy: -2.3679≤F1 / F≤-1.8367, which is more conducive to achieving a large field of view and high resolution of the optical lens.

[0069] In an exemplary embodiment, the optical lens may satisfy: -4≤F2 / F≤-1.5, 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 conditions and controlling the effective focal length of the second lens to be larger, the influence of temperature change on the focal length of the lens can be reduced, and it is beneficial to reduce the sensitivity of the optical system. In combination with the first lens having a negative optical focal length and the third lens having a positive optical focal length, it is beneficial for the second lens to receive the light diverged by the first lens, and smoothly transition the light to the third lens for convergence, and further facilitate the dispersion of light in the edge field of view, reduce the distortion, aberration, and distortion of the edge field of view, so as to improve the resolution ability of the optical lens. Preferably, the optical lens may further satisfy: -3.7≤F2 / F≤-2.2, so as to achieve small distortion and high resolution of the optical lens. More preferably, the optical lens may further satisfy: -3.6≤F2 / F≤-2.3, so as to achieve small distortion and high resolution of the optical lens. More preferably, the optical lens can further satisfy: -3.3378≤F2 / F≤-2.5238, thereby achieving small distortion and high resolution of the optical lens.

[0070] In an exemplary embodiment, the optical lens may satisfy: 0.4≤F1 / F2≤0.9, wherein F1 is the effective focal length of the first lens, and F2 is the effective focal length of the second lens. The first lens is used to collect light of a large field of view. By making the optical lens satisfy the above conditions, the range of the ratio of the effective focal length of the first lens to the effective focal length of the second lens is controlled, so that the effective focal length of the second lens is larger and the effective focal length of the first lens is smaller, which is conducive to the rapid divergence of the light to the second lens, and the second lens can smoothly receive the light diverged by the first lens, thereby reducing the aberration and distortion of the optical lens. And the first lens and the second lens are both made to have negative focal power, so that the light is continuously and smoothly diverged when passing through the first lens and the second lens, which is conducive to reducing the edge field of view distortion and improving the resolution ability of the optical lens. Preferably, the optical lens may further satisfy: 0.45≤F1 / F2≤0.8, so as to achieve small distortion and high resolution of the optical lens. More preferably, the optical lens may further satisfy: 0.61≤F1 / F2≤0.77, which is more conducive to achieving small distortion and high resolution of the optical lens. More preferably, the optical lens can further satisfy: 0.6466≤F1 / F2≤0.7413, which is more conducive to achieving small distortion and high resolution of the optical lens.

[0071] In an exemplary embodiment, the optical lens may satisfy: (HF×θ) / (F×θ)≤0.08, wherein F is the total effective focal length of the optical lens, H is the image height corresponding to the maximum field angle of the optical lens, and θ is the radian value corresponding to the maximum field angle of the optical lens. By making the optical lens satisfy the above conditions, the ratio of the actual image height of the optical lens to the theoretical image height is controlled to be close, which is conducive to achieving small distortion and improving resolution. Preferably, the optical lens may further satisfy: 0.001≤|(HF*θ) / (F*θ)|≤0.08 to achieve small distortion of the optical lens. More preferably, the optical lens may further satisfy: 0.0013≤|(HF×θ) / (F×θ)|≤0.0581, which is more conducive to achieving small distortion of the optical lens.

[0072] In an exemplary embodiment, the optical lens may satisfy: F / H ≥ 0.2, wherein F is the total effective focal length of the optical lens, and H is the image height corresponding to the maximum field angle of the optical lens. When the total effective focal length of the optical lens is constant, making the image height smaller, even if the optical lens meets the above conditions, helps to smoothly transition the light, so as to improve the resolution capability of the optical lens. Preferably, the optical lens may further satisfy: 0.4 ≤ F / H ≤ 1, so as to achieve small distortion and high resolution of the optical lens. Preferably, the optical lens may further satisfy: 0.44 ≤ F / H ≤ 0.5, so as to achieve small distortion and high resolution of the optical lens. More preferably, the optical lens may further satisfy: 0.4513 ≤ F / H ≤ 0.4919, which is more conducive to achieving small distortion and high resolution of the optical lens.

[0073] In an exemplary embodiment, the optical lens may satisfy: (FOV×F) / H≥50°, wherein 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. Making the optical lens satisfy the above conditions enables the optical lens to simultaneously satisfy telephoto and large field of view. Preferably, the optical lens may further satisfy: 52°≤(FOV×F) / H≤65°, so as to achieve small distortion of the optical lens. More preferably, the optical lens may further satisfy: 53°≤(FOV×F) / H≤61°, which is more conducive to achieving small distortion of the optical lens. More preferably, the optical lens may further satisfy: 54.1503°≤(FOV×F) / H≤59.0309°, which is more conducive to achieving small distortion of the optical lens.

[0074] In an exemplary embodiment, the optical lens may satisfy: -5≤F2 / R4<0, wherein F2 is the effective focal length of the second lens, and R4 is the radius of curvature of the second side surface of the second lens. The optical lens satisfies the above conditions, and the second side surface of the second lens is concave, the second lens has negative optical power, and the radius of curvature of the second side surface of the second lens is large, which is beneficial for the second lens to collect light passing through the first lens, avoid excessive divergence of light, reduce aberrations, improve the resolution of the optical lens, and control the aperture of the rear system. Preferably, the optical lens may further satisfy: -4≤F2 / R4≤-1.5, so as to realize the miniaturization of the optical lens. More preferably, the optical lens may further satisfy: -3.33≤F2 / R4≤-2.8, so as to realize the miniaturization of the optical lens. More preferably, the optical lens may further satisfy: -3.2297≤F2 / R4≤-2.9079, so as to realize the miniaturization of the optical lens.

[0075] In an exemplary embodiment, the optical lens may satisfy: F3 / F≤6, where F is the total effective focal length of the optical lens, and F3 is the effective focal length of the third lens. The optical lens satisfies the above conditions, and the third lens has positive focal power and a small effective focal length value, which can turn the light rays that are diverging and rising in the front, quickly converge the light rays, and make the light rays converge faster in the light lens, avoiding further divergence of the light rays emitted in the front, so as to reduce the total optical length of the optical lens and the aperture at the rear end. It can also collect the light rays in the front, avoid light loss, and improve the imaging quality of the optical lens. Preferably, the optical lens can further satisfy: 0.5≤F3 / F≤5, which can reduce the total optical length of the optical lens and realize a small front aperture, and setting a lower limit of the ratio of the effective focal length of the third lens to the total effective focal length of the optical lens is conducive to ensuring that both the imaging quality of the optical lens and the miniaturization of the optical lens can be improved, and the second side surface of the second lens with a concave surface in front and the cemented part of the fourth lens and the fifth lens with a larger effective combined focal length in the back can make the light transition smoothly, reduce aberrations, and realize miniaturization and high resolution of the optical lens. More preferably, the optical lens can further satisfy: 1≤F3 / F≤5.7, which is more conducive to reducing aberrations, realizing miniaturization and high resolution of the optical lens. More preferably, the optical lens can further satisfy: 1.5459≤F3 / F≤4.3744, which is more conducive to reducing aberrations, realizing miniaturization and high resolution of the optical lens.

[0076] In an exemplary embodiment, the optical lens may satisfy: F3 / d4≤9, wherein F3 is the effective focal length of the third lens, and d4 is the distance between the second lens and the third lens along the optical axis. The optical lens satisfies the above conditions, and both the first lens and the second lens have negative optical focal length, so that the light can be continuously and smoothly diverged when passing through the first lens and the second lens. Controlling the distance between the second lens and the third lens along the optical axis to be larger, and matching the third lens with positive optical focal length and a smaller effective focal length value of the third lens is conducive to reducing the reflection of the lens, improving the resolution quality, and facilitating the smooth transition of light. Preferably, the optical lens may further satisfy: 0.5≤F3 / d4≤10.5, which is conducive to the third lens receiving the light passing through the second lens, reducing the light energy loss between the second lens and the third lens, and realizing the miniaturization and high resolution of the optical lens. More preferably, the optical lens can further satisfy: 1.9111≤F3 / d4≤8.1832, which is more conducive to the third lens receiving the light passing through the second lens, reducing the light energy loss between the second lens and the third lens, and realizing the miniaturization and high resolution of the optical lens.

[0077] In an exemplary embodiment, the optical lens may satisfy: |F45| / F≥1.5, where F is the total effective focal length of the optical lens, and F45 is the combined focal length of the fourth lens and the fifth lens. By making the optical lens satisfy the above conditions and controlling the combined focal length of the cemented member composed of the fourth lens and the fifth lens to be larger, the trend of the light entering the cemented member can be controlled, the aberration caused by the entering large-angle light can be reduced, and the deflection angle of the light emitted through the cemented member can be further reduced, and the exit angle of the light passing through the second side of the fifth lens can be controlled within a certain range, so as to correct the aberration of the optical lens, reduce the sensitivity of the optical lens, and correct the chromatic aberration of the optical lens, which is beneficial to improving the imaging quality of the optical lens, and at the same time, the structure of the optical lens can be made compact, which is beneficial to the miniaturization of the optical lens. Preferably, the optical lens may further satisfy: 1.5≤|F45| / F≤50, so as to achieve low sensitivity and miniaturization of the optical lens. More preferably, the optical lens may further satisfy: 2≤|F45| / F≤50, so as to achieve low sensitivity and miniaturization of the optical lens. More preferably, the optical lens can further satisfy: 2.9446≤|F45| / F≤34.2995, thereby achieving low sensitivity and miniaturization of the optical lens.

[0078] In an exemplary embodiment, the optical lens may satisfy: 0.03≤d4 / TTL≤0.2, wherein d4 is the 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 conditions, the distance between the second lens and the third lens along the optical axis is made larger, which is conducive to reducing the reflection of the lens, reducing the generation of ghost images, and also conducive to the smooth transition of light. Preferably, the optical lens may further satisfy: 0.03≤d4 / TTL≤0.17, so as to realize the miniaturization and high resolution of the optical lens. More preferably, the optical lens may further satisfy: 0.0405≤d4 / TTL≤0.1296, which is more conducive to realizing the miniaturization and high resolution of the optical lens.

[0079] In an exemplary embodiment, the optical lens may satisfy: (d8+d9) / TTL≤0.35, wherein d8 is the center thickness of the fourth lens, d9 is the center thickness of the fifth lens, and TTL is the total optical length of the optical lens. If the center thickness of the bonding member (in this embodiment, the bonding member composed of the fourth lens and the fifth lens) accounts for too large a proportion, the light control ability of the lens will be reduced, and the relative illumination will also be low. By making the optical lens meet the above conditions, controlling the range of the ratio of the sum of the center thickness of the fourth lens on the optical axis and the center thickness of the fifth lens on the optical axis to the total optical length of the optical lens, and reasonably setting the center thickness of the bonding member when the total optical length of the optical lens remains unchanged, the light control ability of the optical lens can be enhanced, which is conducive to controlling more light to enter the rear system, improving the light throughput of the optical lens, and further conducive to reducing the total optical length of the optical lens, thereby realizing the miniaturization of the optical lens. Preferably, the optical lens may further satisfy: 0.06≤(d8+d9) / TTL≤0.28, realizing the miniaturization and high light throughput of the optical lens. More preferably, the optical lens can further satisfy: 0.1095≤(d8+d9) / TTL≤0.246, which is more conducive to realizing miniaturization and high light transmittance of the optical lens.

[0080] In an exemplary embodiment, the optical lens may satisfy: -1≤(R2-R3) / (R2+R3)≤0, wherein R2 is the radius of curvature of the second side of the first lens, and R3 is the radius of curvature of the first side of the second lens. By making the optical lens satisfy the above conditions, the aberration of the optical lens can be corrected, and it is ensured that when the light emitted from the first lens is incident on the first side of the second lens, the incident light is relatively gentle, thereby reducing the tolerance sensitivity of the optical lens. Preferably, the optical lens may further satisfy: -0.55≤(R2-R3) / (R2+R3)≤-0.4, thereby achieving low sensitivity of the optical lens. More preferably, the optical lens may further satisfy: -0.5198≤(R2-R3) / (R2+R3)≤-0.4305, which is more conducive to achieving low sensitivity of the optical lens.

[0081] In an exemplary embodiment, the optical lens may satisfy: -1.5≤F2 / F6≤-0.2, wherein F2 is the effective focal length of the second lens, and F6 is the effective focal length of the sixth lens. By making the optical lens satisfy the above conditions, controlling the ratio of the effective focal length of the second lens to the effective focal length of the sixth lens, making the effective focal lengths of the second lens and the sixth lens close, and making the effective focal lengths of the second lens and the sixth lens both larger, it is helpful to control the thermal compensation of the optical lens, so that the optical lens maintains good resolution at high and low temperatures, and improves the thermal stability of the optical lens, so that the temperature performance of the optical lens is good. Preferably, the optical lens may further satisfy: -1.2≤F2 / F6≤-0.3, so as to achieve good temperature performance of the optical lens. More preferably, the optical lens may further satisfy: -1.2≤F2 / F6≤-0.35, which is more conducive to achieving good temperature performance of the optical lens. More preferably, the optical lens may further satisfy: -1.0427≤F2 / F6≤-0.5136, which is more conducive to achieving good temperature performance of the optical lens.

[0082] In an exemplary embodiment, the optical lens may satisfy: TTL / F≤8.5, 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 conditions, it is beneficial to reduce the total optical length of the optical lens and realize the miniaturization of the optical lens. Preferably, the optical lens may further satisfy: TTL / F≤8, so as to realize the miniaturization of the optical lens. More preferably, the optical lens may further satisfy: 5.35≤TTL / F≤8.2, which is more conducive to the miniaturization of the optical lens. More preferably, the optical lens may further satisfy: 5.9953≤TTL / F≤7.7313, which is more conducive to the miniaturization of the optical lens.

[0083] In an exemplary embodiment, the optical lens may satisfy: TTL / H / FOV×180°≤9, wherein TTL is the total optical 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. By making the optical lens satisfy the above conditions, both the large field of view and miniaturization of the optical lens can be taken into account. Preferably, the optical lens may further satisfy: 3.7≤TTL / H / FOV*180°≤6.2, so as to realize the miniaturization and large field of view of the optical lens. More preferably, the optical lens may further satisfy: 4.148≤TTL / H / FOV×180°≤5.6415, which is more conducive to realizing the miniaturization and large field of view of the optical lens.

[0084] In an exemplary embodiment, the optical lens may satisfy: F / ENPD≤2, wherein 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 conditions, the entrance pupil diameter is large and the light flux is large, which is conducive to achieving a small FNO and improving the relative illumination of the optical lens. Preferably, the optical lens may further satisfy: F / ENPD≤1.95 to achieve high light flux of the optical lens. More preferably, the optical lens may further satisfy: 1.9≤F / ENPD≤1.95 to achieve high light flux of the optical lens. More preferably, the optical lens may further satisfy: 1.915≤F / ENPD≤1.9151 to achieve high light flux of the optical lens.

[0085] In an exemplary embodiment, the optical lens may satisfy: F6 / F≥2.8, where F is the total effective focal length of the optical lens, and F6 is the effective focal length of the sixth lens. By making the optical lens satisfy the above conditions, the sixth lens is controlled to have a positive focal power, and the effective focal length value is large, so that the light is less affected by the surface shape change, and the low sensitivity of the optical lens is achieved; and the effective focal length value of the last lens of the optical lens (i.e., the sixth lens) is large, which is conducive to the smooth transition of light, light convergence, and a small deflection angle, so that the light emission angle of the second side of the sixth lens is controlled within a certain range, which is conducive to achieving a small CRA of the optical lens. Controlling the light emission angle of the second side of the sixth lens within a certain range is conducive to correcting the optical lens aberration, reducing the sensitivity of the optical lens, and can also correct the chromatic aberration of the optical lens, which is conducive to improving the imaging quality of the lens. In addition, making the effective focal length value of the sixth lens large can also achieve miniaturization and optical back focal length of the optical lens. Preferably, the optical lens can further satisfy: F6 / F≥3, further satisfy: 2.8≤F6 / F≤5.8 and further satisfy: 3.1172≤F6 / F≤4.9359, so as to realize low sensitivity, miniaturization, back focal length and small CRA of the optical lens.

[0086] In an exemplary embodiment, the optical lens may satisfy: BFL / TTL≥0.22, 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 conditions and controlling the ratio of the optical back focus to the total optical length of the optical lens within this range, the long back focus and miniaturization of the optical lens can be taken into account. Preferably, the optical lens may further satisfy 0.22≤BFL / TTL≤0.36 to achieve a long optical back focus of the optical lens. More preferably, the optical lens may further satisfy: 0.2398≤BFL / TTL≤0.3291, which is more conducive to achieving a long optical back focus of the optical lens.

[0087] In an exemplary embodiment, the optical lens may satisfy: |D12-H| / BFL≤0.45, wherein D12 is the maximum clear aperture of the second side of the sixth lens corresponding to the maximum field angle of the optical lens, BFL is the optical back focus of the optical lens, and H is the image height corresponding to the maximum field angle of the optical lens. By making the optical lens satisfy the above conditions, it is possible to achieve a maximum clear aperture of the second side of the last lens close to the image height, and to achieve a longer optical back focus of the optical lens, so as to facilitate the realization of a small CRA. Preferably, the optical lens may further satisfy: 0.001≤|D12-H| / BFL≤0.45, to achieve a small CRA of the optical lens. More preferably, the optical lens may further satisfy: 0.0066≤|D12-H| / BFL≤0.3682, which is more conducive to achieving a small CRA of the optical lens.

[0088] 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.

[0089] In an exemplary embodiment, at least two lenses from the first lens to the sixth lens may be spherical lenses or aspherical lenses. In an exemplary embodiment, the second lens and the sixth lens may be aspherical lenses. The present application does not specifically limit the specific number of spherical lenses and aspherical lenses. When focusing on imaging quality, the number of aspherical lenses can be increased, or even all lenses use aspherical lenses. The characteristic of an aspherical lens is that the curvature changes continuously from the center of the lens to the periphery. Unlike a spherical lens with a constant curvature from the center of the lens to the periphery, an aspherical lens has a better curvature radius characteristic, and has the advantages of improving distortion aberration and improving astigmatism aberration. After using an aspherical lens, the aberration that occurs during imaging can be eliminated as much as possible, thereby improving the imaging quality of the lens. The setting of an aspherical lens helps to correct system aberrations and improve resolution.

[0090] In an exemplary embodiment, the first to sixth lenses may be glass lenses or plastic lenses. In an example form, the fourth lens and the fifth lens may be glass lenses. The present application does not specifically limit the specific number of glass lenses and plastic lenses. An optical lens made of glass can suppress the deviation of the back focus of the optical lens with temperature changes to improve the stability of the system. At the same time, the use of glass material can avoid problems such as lens imaging blur caused by high and low temperature changes in the use environment and affecting the normal use of the lens. Specifically, when focusing on temperature performance and resolution quality, the first to sixth lenses can all be glass aspherical lenses. In applications where temperature stability requirements are lower, the first to sixth lenses in the optical lens can also be made of plastic. Using plastic to make optical lenses can effectively reduce production costs. Of course, the first to eighth lenses in the optical lens can also be made of a combination of plastic and glass.

[0091] In an exemplary embodiment, the first side surface and the second side surface of the second lens and the first side surface and the second side surface of the sixth lens may have reverse curvature, which is beneficial to balance aberrations and improve the resolution of the optical lens.

[0092] According to the above-mentioned embodiment of the present application, the optical lens has at least one beneficial effect such as small distortion, good temperature performance, weak ghost images, high resolution, and long back focus through the reasonable setting of parameters such as the shape of each lens and the optical focal length.

[0093] 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 six lenses are described as an example in the embodiment, the optical lens is not limited to including six lenses. If necessary, the optical lens may also include other numbers of lenses. The specific embodiments of the optical lens applicable to the above-mentioned embodiments are further described below with reference to the accompanying drawings.

[0094] Example 1

[0095] 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.

[0096] 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 and a sixth lens L6 in sequence from the first side to the second side along the optical axis.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] The fourth lens L4 has negative refractive power, and its first side surface S8 is concave, and its second side surface S9 is concave.

[0101] The fifth lens L5 has positive refractive power, and its first side surface S9 is a convex surface, and its second side surface S10 is a convex surface.

[0102] The sixth lens L6 has positive refractive power, and its first side surface S11 is a convex surface, and its second side surface S12 is a convex surface.

[0103] The fourth lens L4 and the fifth lens L5 are cemented together to form a cemented member, and the second side surface S12 of the sixth lens L6 has inverse curvature.

[0104] The optical lens may further include a stop STO, and the stop STO may be disposed between the third lens L3 and the fourth lens L4.

[0105] Optionally, the optical lens may further include a filter having a first side surface S13 and a second side surface S14.

[0106] 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 S14 in sequence and is finally imaged on the imaging surface IMA disposed on the second side, wherein an image sensor chip is disposed on the imaging surface. It should be understood that the optical lens provided in the present application can also be used as, for example, a projection lens or a laser radar transmitting end lens. In this case, Figure 1 Here, IMA represents an image source plane, and light from the image source plane sequentially passes through the surfaces S14 to S1 and is finally projected onto a projection plane (not shown) disposed on the first side.

[0107] 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.

[0108] Table 1

[0109]

[0110] In Embodiment 1, the first side surface S3 and the second side surface S4 of the second lens L2 and the first side surface S11 and the second side surface S12 of the sixth lens L6 may be aspherical surfaces, and the surface shape of each aspherical lens is x The following aspheric formulas can be used but are not limited to:

[0111] (1)

[0112] Wherein, x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at a height of h along the optical axis; c is the paraxial curvature of the aspheric surface, c=1 / R (i.e., the paraxial curvature c is the reciprocal of the curvature radius R in Table 1 above); k is the cone coefficient; Ai is the correction coefficient of the i-th order of the aspheric surface. Table 2 below gives the cone coefficient k and the high-order coefficients A4, A6, A8, A10, A12, A14 and A16 that can be used for each aspheric mirror surface S3, S4, S11, S12 in Example 1.

[0113] Table 2

[0114]

[0115] Figure 2 A schematic diagram of a distortion curve of the optical lens of this embodiment is shown. The optical lens of this embodiment can achieve small distortion.

[0116] Example 2

[0117] The following reference Figure 3 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 3 A schematic structural diagram of an optical lens according to Embodiment 2 of the present application is shown.

[0118] 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 and a sixth lens L6 in sequence from the first side to the second side along the optical axis.

[0119] 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.

[0120] 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.

[0121] 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.

[0122] The fourth lens L4 has negative refractive power, and its first side surface S8 is concave, and its second side surface S9 is concave.

[0123] The fifth lens L5 has positive refractive power, and its first side surface S9 is a convex surface, and its second side surface S10 is a convex surface.

[0124] The sixth lens L6 has positive refractive power, and its first side surface S11 is a convex surface, and its second side surface S12 is a convex surface.

[0125] The fourth lens L4 and the fifth lens L5 are cemented together to form a cemented member, and the second side surface S12 of the sixth lens L6 has inverse curvature.

[0126] The optical lens may further include a stop STO, which may be disposed between the third lens L3 and the fourth lens L4 to improve imaging quality.

[0127] Optionally, the optical lens may further include a filter having a first side surface S13 and a second side surface S14.

[0128] 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 cone coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspheric mirror surfaces S3, S4, S11 and S12 of each aspheric lens, the second lens L2 and the sixth lens L6, which can be used in Example 2, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above Example 1.

[0129] Table 3

[0130]

[0131] Table 4

[0132]

[0133] Figure 4 A schematic diagram of a distortion curve of the optical lens of this embodiment is shown. The optical lens of this embodiment can achieve small distortion.

[0134] Example 3

[0135] The following reference Figure 5 The optical lens according to Embodiment 3 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Figure 5 A schematic structural diagram of an optical lens according to Example 3 of the present application is shown.

[0136] 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 and a sixth lens L6 in sequence from the first side to the second side along the optical axis.

[0137] 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.

[0138] 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.

[0139] 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.

[0140] The fourth lens L4 has negative refractive power, and its first side surface S8 is convex, and its second side surface S9 is concave.

[0141] The fifth lens L5 has positive refractive power, and its first side surface S9 is a convex surface, and its second side surface S10 is a convex surface.

[0142] The sixth lens L6 has positive power, and its first side surface S11 is convex, and its second side surface S12 is convex. The fourth lens L4 and the fifth lens L5 are cemented to form a cemented member, and the first side surface S3 of the second lens L2, the first side surface S11 and the second side surface S12 of the sixth lens L6 are recurved.

[0143] The optical lens may further include a stop STO, which may be disposed between the third lens L3 and the fourth lens L4 to improve imaging quality.

[0144] Optionally, the optical lens may further include a filter having a first side surface S13 and a second side surface S14.

[0145] 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 cone coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspheric mirror surfaces S3, S4, S11 and S12 of each aspheric lens, the second lens L2 and the sixth lens L6, which can be used in Example 3, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above Example 1.

[0146] Table 5

[0147]

[0148] Table 6

[0149]

[0150] Figure 6 A schematic diagram of a distortion curve of the optical lens of this embodiment is shown. The optical lens of this embodiment can achieve small distortion.

[0151] Example 4

[0152] The following reference Figure 7 The optical lens according to Embodiment 4 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Figure 7 A schematic structural diagram of an optical lens according to Example 4 of the present application is shown.

[0153] 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 and a sixth lens L6 in sequence from the first side to the second side along the optical axis.

[0154] 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.

[0155] 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.

[0156] 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.

[0157] The fourth lens L4 has negative refractive power, and its first side surface S8 is convex, and its second side surface S9 is concave.

[0158] The fifth lens L5 has positive refractive power, and its first side surface S9 is a convex surface, and its second side surface S10 is a convex surface.

[0159] The sixth lens L6 has positive power, and its first side surface S11 is convex, and its second side surface S12 is convex. The fourth lens L4 and the fifth lens L5 are cemented to form a cemented member, and the first side surface S3 of the second lens L2, the first side surface S11 and the second side surface S12 of the sixth lens L6 are recurved.

[0160] The optical lens may further include a stop STO, which may be disposed between the third lens L3 and the fourth lens L4 to improve imaging quality.

[0161] Optionally, the optical lens may further include a filter having a first side surface S13 and a second side surface S14.

[0162] Table 7 shows the curvature radius R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 4. Table 8 shows the cone coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspheric mirror surfaces S3, S4, S11 and S12 of each aspheric lens, the second lens L2 and the sixth lens L6, which can be used in Example 4, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above Example 1.

[0163] Table 7

[0164]

[0165] Table 8

[0166]

[0167] Figure 8A schematic diagram of a distortion curve of the optical lens of this embodiment is shown. The optical lens of this embodiment can achieve small distortion.

[0168] Example 5

[0169] The following reference Fig. 9 The optical lens according to Embodiment 5 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig. 9 A schematic structural diagram of an optical lens according to Example 5 of the present application is shown.

[0170] like Fig. 9 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5 and a sixth lens L6 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 convex 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 negative refractive power, and its first side surface S8 is concave, and its second side surface S9 is concave.

[0175] The fifth lens L5 has positive refractive power, and its first side surface S9 is a convex surface, and its second side surface S10 is a convex surface.

[0176] The sixth lens L6 has positive refractive power, a first side surface S11 thereof is a convex surface, and a second side surface S12 thereof is a concave surface. The fourth lens L4 and the fifth lens L5 are cemented together to form a cemented component.

[0177] The optical lens may further include a stop STO, which may be disposed between the third lens L3 and the fourth lens L4 to improve imaging quality.

[0178] Optionally, the optical lens may further include a filter having a first side surface S13 and a second side surface S14.

[0179] 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 cone coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspheric mirror surfaces S3, S4, S11 and S12 of each aspheric lens of the second lens L2 and the sixth lens L6 in Example 5, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above Example 1.

[0180] Table 9

[0181]

[0182] Table 10

[0183]

[0184] Fig.10 A schematic diagram of a distortion curve of the optical lens of this embodiment is shown. The optical lens of this embodiment can achieve small distortion.

[0185] Example 6

[0186] The following reference Fig.11 The optical lens according to Embodiment 6 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.11 A schematic structural diagram of an optical lens according to Example 6 of the present application is shown.

[0187] like Fig.11 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 and a sixth lens L6 in sequence from the first side to the second side along the optical axis.

[0188] 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.

[0189] 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.

[0190] 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.

[0191] The fourth lens L4 has negative refractive power, and its first side surface S8 is concave, and its second side surface S9 is concave.

[0192] The fifth lens L5 has positive refractive power, and its first side surface S9 is a convex surface, and its second side surface S10 is a convex surface.

[0193] The sixth lens L6 has positive refractive power, a first side surface S11 thereof is a convex surface, and a second side surface S12 thereof is a concave surface. The fourth lens L4 and the fifth lens L5 are cemented together to form a cemented component.

[0194] The optical lens may further include a stop STO, which may be disposed between the third lens L3 and the fourth lens L4 to improve imaging quality.

[0195] Optionally, the optical lens may further include a filter having a first side surface S13 and a second side surface S14.

[0196] 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 aspheric mirror surfaces S3, S4, S11 and S12 of each aspheric lens, the second lens L2 and the sixth lens L6, which can be used in Example 6, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above Example 1.

[0197] Table 11

[0198]

[0199] Table 12

[0200]

[0201] Fig.12 A schematic diagram of a distortion curve of the optical lens of this embodiment is shown. The optical lens of this embodiment can achieve small distortion.

[0202] Example 7

[0203] The following reference Fig.13 An optical lens according to Embodiment 7 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.13 A schematic structural diagram of an optical lens according to Example 7 of the present application is shown.

[0204] 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 and a sixth lens L6 in sequence from the first side to the second side along the optical axis.

[0205] 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.

[0206] 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.

[0207] 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.

[0208] The fourth lens L4 has negative refractive power, and its first side surface S8 is concave, and its second side surface S9 is concave.

[0209] The fifth lens L5 has positive refractive power, and its first side surface S9 is a convex surface, and its second side surface S10 is a convex surface.

[0210] The sixth lens L6 has positive refractive power, a first side surface S11 thereof is a convex surface, and a second side surface S12 thereof is a plane. The fourth lens L4 and the fifth lens L5 are cemented to form a cemented component.

[0211] The optical lens may further include a stop STO, which may be disposed between the third lens L3 and the fourth lens L4 to improve imaging quality.

[0212] Optionally, the optical lens may further include a filter having a first side surface S13 and a second side surface S14.

[0213] Table 13 shows the curvature radius R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 7. Table 14 shows the cone coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspheric mirror surfaces S3, S4, S11 and S12 of each aspheric lens of the second lens L2 and the sixth lens L6 that can be used in Example 7, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above Example 1.

[0214] Table 13

[0215]

[0216] Table 14

[0217]

[0218] Fig.14 A schematic diagram of a distortion curve of the optical lens of this embodiment is shown. The optical lens of this embodiment can achieve small distortion.

[0219] Example 8

[0220] The following reference Fig.15 The optical lens according to Embodiment 8 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.15 A schematic structural diagram of an optical lens according to Example 8 of the present application is shown.

[0221] like Fig.15As 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 and a sixth lens L6 in sequence from the first side to the second side along the optical axis.

[0222] 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.

[0223] 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.

[0224] 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.

[0225] The fourth lens L4 has negative refractive power, and its first side surface S8 is concave, and its second side surface S9 is concave.

[0226] The fifth lens L5 has positive refractive power, and its first side surface S9 is a convex surface, and its second side surface S10 is a convex surface.

[0227] The sixth lens L6 has positive refractive power, a first side surface S11 thereof is a convex surface, and a second side surface S12 thereof is a plane. The fourth lens L4 and the fifth lens L5 are cemented to form a cemented component.

[0228] The optical lens may further include a stop STO, which may be disposed between the third lens L3 and the fourth lens L4 to improve imaging quality.

[0229] Optionally, the optical lens may further include a filter having a first side surface S13 and a second side surface S14.

[0230] Table 15 shows the curvature radius R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 8. Table 16 shows the cone coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspheric mirror surfaces S3, S4, S11 and S12 of each aspheric lens of the second lens L2 and the sixth lens L6 in Example 8, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above Example 1.

[0231] Table 15

[0232]

[0233] Table 16

[0234]

[0235] Fig.16 A schematic diagram of a distortion curve of the optical lens of this embodiment is shown. The optical lens of this embodiment can achieve small distortion.

[0236] Example 9

[0237] The following reference Fig.17 The optical lens according to Embodiment 9 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.17 A schematic structural diagram of an optical lens according to Example 9 of the present application is shown.

[0238] 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 and a sixth lens L6 in sequence from the first side to the second side along the optical axis.

[0239] 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.

[0240] 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.

[0241] 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.

[0242] The fourth lens L4 has positive refractive power, and its first side surface S8 is a convex surface, and its second side surface S9 is a convex surface.

[0243] The fifth lens L5 has negative refractive power, and its first side surface S9 is concave, and its second side surface S10 is convex.

[0244] The sixth lens L6 has positive power, a first side surface S11 thereof is a concave surface, and a second side surface S12 thereof is a convex surface. The fourth lens L4 and the fifth lens L5 are cemented to form a cemented member, and the first side surface S3 of the second lens L2 has an inverse curve.

[0245] The optical lens may further include a stop STO, which may be disposed between the third lens L3 and the fourth lens L4 to improve imaging quality.

[0246] Optionally, the optical lens may further include a filter having a first side surface S13 and a second side surface S14.

[0247] Table 17 shows the curvature radius R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 9. Table 18 shows the cone coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspheric mirror surfaces S3, S4, S11 and S12 of each aspheric lens of the second lens L2 and the sixth lens L6 in Example 9, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above Example 1.

[0248] Table 17

[0249]

[0250] Table 18

[0251]

[0252] Fig.18 A schematic diagram of a distortion curve of the optical lens of this embodiment is shown. The optical lens of this embodiment can achieve small distortion.

[0253] Example 10

[0254] The following reference Fig.19 The optical lens according to Embodiment 10 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.19 A schematic structural diagram of an optical lens according to Example 10 of the present application is shown.

[0255] 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 and a sixth lens L6 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 convex surface, and its second side surface S4 is a concave 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 convex surface.

[0259] The fourth lens L4 has positive refractive power, and its first side surface S8 is a convex surface, and its second side surface S9 is a convex surface.

[0260] The fifth lens L5 has negative refractive power, and its first side surface S9 is concave, and its second side surface S10 is convex.

[0261] The sixth lens L6 has positive power, and its first side surface S11 is concave, and its second side surface S12 is convex. The fourth lens L4 and the fifth lens L5 are cemented to form a cemented member, and the first side surface S3 of the second lens L2 and the first side surface S11 of the sixth lens L6 are recurved.

[0262] The optical lens may further include a stop STO, which may be disposed between the third lens L3 and the fourth lens L4 to improve imaging quality.

[0263] Optionally, the optical lens may further include a filter having a first side surface S13 and a second side surface S14.

[0264] Table 19 shows the curvature radius R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 10. Table 20 shows the cone coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspheric mirror surfaces S3, S4, S11 and S12 of each aspheric lens of the second lens L2 and the sixth lens L6 in Example 10, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above Example 1.

[0265] Table 19

[0266]

[0267] Table 20

[0268]

[0269] Fig. 20 A schematic diagram of a distortion curve of the optical lens of this embodiment is shown. The optical lens of this embodiment can achieve small distortion.

[0270] Embodiment 11

[0271] The following reference Fig.21 An optical lens according to Embodiment 11 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.21 A schematic structural diagram of an optical lens according to Example 11 of the present application is shown.

[0272] 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 and a sixth lens L6 in sequence from the first side to the second side along the optical axis.

[0273] 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.

[0274] 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.

[0275] 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.

[0276] The fourth lens L4 has positive refractive power, and its first side surface S8 is a convex surface, and its second side surface S9 is a convex surface.

[0277] The fifth lens L5 has negative refractive power, and its first side surface S9 is concave, and its second side surface S10 is convex.

[0278] The sixth lens L6 has positive power, a first side surface S11 thereof is concave, and a second side surface S12 thereof is convex. The fourth lens L4 and the fifth lens L5 are cemented to form a cemented member, and the first side surface S3 of the second lens L2 and the second side surface S12 of the sixth lens L6 are recurved.

[0279] The optical lens may further include a stop STO, which may be disposed between the third lens L3 and the fourth lens L4 to improve imaging quality.

[0280] Optionally, the optical lens may further include a filter having a first side surface S13 and a second side surface S14.

[0281] Table 21 shows the curvature radius R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 11. Table 22 shows the cone coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspheric mirror surfaces S3, S4, S11 and S12 of each aspheric lens of the second lens L2 and the sixth lens L6 in Example 11, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above Example 1.

[0282] Table 21

[0283]

[0284] Table 22

[0285]

[0286] Fig. 22 A schematic diagram of a distortion curve of the optical lens of this embodiment is shown. The optical lens of this embodiment can achieve small distortion.

[0287] Example 12

[0288] The following reference Fig.23 The optical lens according to Embodiment 12 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.23 A schematic structural diagram of an optical lens according to Example 12 of the present application is shown.

[0289] like Fig.23 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 and a sixth lens L6 in sequence from the first side to the second side along the optical axis.

[0290] 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.

[0291] 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.

[0292] 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.

[0293] The fourth lens L4 has positive refractive power, and its first side surface S8 is a convex surface, and its second side surface S9 is a convex surface.

[0294] The fifth lens L5 has negative refractive power, and its first side surface S9 is concave, and its second side surface S10 is convex.

[0295] The sixth lens L6 has positive refractive power, a first side surface S11 thereof is a concave surface, and a second side surface S12 thereof is a convex surface. The fourth lens L4 and the fifth lens L5 are cemented to form a cemented member, and the first side surface S11 of the sixth lens L6 has an inverse curve.

[0296] The optical lens may further include a stop STO, which may be disposed between the third lens L3 and the fourth lens L4 to improve imaging quality.

[0297] Optionally, the optical lens may further include a filter having a first side surface S13 and a second side surface S14.

[0298] Table 23 shows the curvature radius R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 12. Table 24 shows the cone coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspheric mirror surfaces S3, S4, S11 and S12 of each aspheric lens of the second lens L2 and the sixth lens L6 in Example 12, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above Example 1.

[0299] Table 23

[0300]

[0301] Table 24

[0302]

[0303] Fig.24 A schematic diagram of a distortion curve of the optical lens of this embodiment is shown. The optical lens of this embodiment can achieve small distortion.

[0304] Embodiment 13

[0305] The following reference Fig.25The optical lens according to Embodiment 13 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.25 A schematic structural diagram of an optical lens according to Example 13 of the present application is shown.

[0306] like Fig.25 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5 and a sixth lens L6 in sequence from the first side to the second side along the optical axis.

[0307] 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.

[0308] 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.

[0309] 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.

[0310] The fourth lens L4 has positive refractive power, and its first side surface S8 is a convex surface, and its second side surface S9 is a convex surface.

[0311] The fifth lens L5 has negative refractive power, and its first side surface S9 is concave, and its second side surface S10 is convex.

[0312] The sixth lens L6 has positive refractive power, and its first side surface S11 is a convex surface, and its second side surface S12 is a convex surface. The fourth lens L4 and the fifth lens L5 are cemented to form a cemented component.

[0313] The optical lens may further include a stop STO, which may be disposed between the third lens L3 and the fourth lens L4 to improve imaging quality.

[0314] Optionally, the optical lens may further include a filter having a first side surface S13 and a second side surface S14.

[0315] Table 25 shows the curvature radius R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 13. Table 26 shows the cone coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspheric mirror surfaces S3, S4, S11 and S12 of each aspheric lens of the second lens L2 and the sixth lens L6 in Example 13, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above Example 1.

[0316] Table 25

[0317]

[0318] Table 26

[0319]

[0320] Fig.26 A schematic diagram of a distortion curve of the optical lens of this embodiment is shown. The optical lens of this embodiment can achieve small distortion.

[0321] Embodiment 14

[0322] The following reference Fig. 27 The optical lens according to Embodiment 14 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig. 27 A schematic structural diagram of an optical lens according to Example 14 of the present application is shown.

[0323] like Fig. 27 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5 and a sixth lens L6 in sequence from the first side to the second side along the optical axis.

[0324] 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.

[0325] 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.

[0326] 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.

[0327] The fourth lens L4 has positive refractive power, and its first side surface S8 is a convex surface, and its second side surface S9 is a convex surface.

[0328] The fifth lens L5 has negative refractive power, and its first side surface S9 is concave, and its second side surface S10 is convex.

[0329] The sixth lens L6 has positive refractive power, and its first side surface S11 is a convex surface, and its second side surface S12 is a convex surface. The fourth lens L4 and the fifth lens L5 are cemented to form a cemented component.

[0330] The optical lens may further include a stop STO, which may be disposed between the third lens L3 and the fourth lens L4 to improve imaging quality.

[0331] Optionally, the optical lens may further include a filter having a first side surface S13 and a second side surface S14.

[0332] Table 27 shows the curvature radius R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 14. Table 28 shows the cone coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspheric mirror surfaces S3, S4, S11 and S12 of each aspheric lens of the second lens L2 and the sixth lens L6 in Example 14, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above Example 1.

[0333] Table 27

[0334]

[0335] Table 28

[0336]

[0337] Fig.28 A schematic diagram of a distortion curve of the optical lens of this embodiment is shown. The optical lens of this embodiment can achieve small distortion.

[0338] Embodiment 15

[0339] The following reference Fig.29 The optical lens according to Embodiment 15 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.29 A schematic structural diagram of an optical lens according to Example 15 of the present application is shown.

[0340] like Fig.29 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5 and a sixth lens L6 in sequence from the first side to the second side along the optical axis.

[0341] 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.

[0342] 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.

[0343] 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.

[0344] The fourth lens L4 has positive refractive power, and its first side surface S8 is a convex surface, and its second side surface S9 is a convex surface.

[0345] The fifth lens L5 has negative refractive power, and its first side surface S9 is concave, and its second side surface S10 is concave.

[0346] The sixth lens L6 has positive power, and its first side surface S11 is convex, and its second side surface S12 is convex. The fourth lens L4 and the fifth lens L5 are cemented to form a cemented member, and the second side surface S12 of the sixth lens L6 has a reverse curve.

[0347] The optical lens may further include a stop STO, which may be disposed between the third lens L3 and the fourth lens L4 to improve imaging quality.

[0348] Optionally, the optical lens may further include a filter having a first side surface S13 and a second side surface S14.

[0349] Table 29 shows the curvature radius R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 15. Table 30 shows the cone coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspheric mirror surfaces S3, S4, S11 and S12 of each aspheric lens of the second lens L2 and the sixth lens L6 in Example 15, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above Example 1.

[0350] Table 29

[0351]

[0352] Table 30

[0353]

[0354] Fig.30 A schematic diagram of a distortion curve of the optical lens of this embodiment is shown. The optical lens of this embodiment can achieve small distortion.

[0355] Example 16

[0356] The following reference Fig.31 The optical lens according to Embodiment 16 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.31 A schematic structural diagram of an optical lens according to Example 16 of the present application is shown.

[0357] like Fig.31 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5 and a sixth lens L6 in sequence from the first side to the second side along the optical axis.

[0358] 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.

[0359] 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.

[0360] 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.

[0361] The fourth lens L4 has positive refractive power, and its first side surface S8 is a convex surface, and its second side surface S9 is a convex surface.

[0362] The fifth lens L5 has negative refractive power, and its first side surface S9 is concave, and its second side surface S10 is concave.

[0363] The sixth lens L6 has positive power, and its first side surface S11 is convex, and its second side surface S12 is convex. The fourth lens L4 and the fifth lens L5 are cemented to form a cemented member, and the first side surface S3 of the second lens L2 and the first side surface S11 of the sixth lens L6 are recurved.

[0364] The optical lens may further include a stop STO, which may be disposed between the third lens L3 and the fourth lens L4 to improve imaging quality.

[0365] Optionally, the optical lens may further include a filter having a first side surface S13 and a second side surface S14.

[0366] Table 31 shows the curvature radius R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 16. Table 32 shows the cone coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspheric mirror surfaces S3, S4, S11 and S12 of each aspheric lens of the second lens L2 and the sixth lens L6 in Example 16, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above Example 1.

[0367] Table 31

[0368]

[0369] Table 32

[0370]

[0371] Fig.32 A schematic diagram of a distortion curve of the optical lens of this embodiment is shown. The optical lens of this embodiment can achieve small distortion.

[0372] In summary, Examples 1 to 16 respectively satisfy the relationships shown in Table 33-1 and Table 33-2. In Table 33-1 and Table 33-2, the units of F, ENPD, TTL, H, BFL, F1~F6, D12, and F45 are millimeters (mm), the unit of FOV is degrees (°), and the unit of θ is radians (rad).

[0373] Table 33-1

[0374]

[0375] Table 33-2

[0376]

[0377] 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.

[0378] 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 negative optical power, wherein the first side surface is convex and the second side surface is concave; a third lens having positive refractive power; a fourth lens having optical power; a fifth lens having optical power; One of the fourth lens and the fifth lens has positive refractive power, and the other has negative refractive power; and a sixth lens having positive refractive power; The optical lens meets the following requirements: 0.4≤F1 / F2≤0.8, |(HF×θ) / (F×θ)|≤0.08, F3 / d4≤9, 0.4≤F / H≤1, 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, H is the image height corresponding to the maximum field of view angle of the optical lens, θ is the radian value corresponding to the maximum field of view angle of the optical lens, and d4 is the spacing distance between the second lens and the third lens along the optical axis.

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

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

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

5. The optical lens according to claim 1, characterized in that: The first side surface of the sixth lens is a convex surface, and the second side surface is a convex surface; or the first side surface is convex and the second side surface is concave; or the first side is convex and the second side is flat; Or the first side surface is concave and the second side surface is convex.

6. The optical lens according to any one of claims 1 to 5, characterized in that: The optical lens meets the following requirements: 0.5≤R1 / R3≤2, Wherein, R1 is the curvature radius of the first side surface of the first lens, and R3 is the curvature radius of the first side surface of the second lens.

7. The optical lens according to any one of claims 1 to 5, characterized in that: The optical lens meets the following requirements: 0.5≤R2 / R4≤2, Wherein, R2 is the curvature radius of the second side surface of the first lens, and R4 is the curvature radius of the second side surface of the second lens.

8. The optical lens according to any one of claims 1 to 5, characterized in that: The optical lens meets the following requirements: 0.5≤(R1 / R3) / (R2 / R4)≤2, Among them, R1 is the curvature radius of the first side surface of the first lens, R3 is the curvature radius of the first side surface of the second lens, R2 is the curvature radius of the second side surface of the first lens, and R4 is the curvature radius of the second side surface of the second lens.

9. The optical lens according to any one of claims 1 to 5, characterized in that: The optical lens meets the following requirements: -4≤F1 / F≤-0.8, Wherein, F is the total effective focal length of the optical lens, and F1 is the effective focal length of the first lens.

10. The optical lens according to any one of claims 1 to 5, characterized in that: The optical lens meets the following requirements: -4≤F2 / F≤-1.5, Wherein, F is the total effective focal length of the optical lens, and F2 is the effective focal length of the second lens.

11. The optical lens according to any one of claims 1 to 5, characterized in that: The optical lens meets the following requirements: -5≤F2 / R4<0, Wherein, F2 is the effective focal length of the second lens, and R4 is the radius of curvature of the second side surface of the second lens.

12. The optical lens according to any one of claims 1 to 5, characterized in that: The optical lens meets the following requirements: F3 / F≤6, Wherein, F is the total effective focal length of the optical lens, and F3 is the effective focal length of the third lens.

13. The optical lens according to any one of claims 1 to 5, characterized in that: The optical lens meets the following requirements: |F45| / F≥1.5, Wherein, F is the total effective focal length of the optical lens, and F45 is the combined focal length of the fourth lens and the fifth lens.

14. The optical lens according to any one of claims 1 to 5, characterized in that: The optical lens meets the following requirements: 0.03≤d4 / TTL≤0.2, Wherein, d4 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.

15. The optical lens according to any one of claims 1 to 5, characterized in that: The optical lens meets the following requirements: -1.5≤F2 / F6≤-0.2, Wherein, F2 is the effective focal length of the second lens, and F6 is the effective focal length of the sixth lens.

16. The optical lens according to any one of claims 1 to 5, characterized in that: The optical lens meets the following requirements: F6 / F≥2.8, Wherein, F is the total effective focal length of the optical lens, and F6 is the effective focal length of the sixth lens.

17. The optical lens according to any one of claims 1 to 5, characterized in that: The optical lens meets the following requirements: BFL / TTL ≥ 0.22, Wherein, BFL is the optical back focus of the optical lens, and TTL is the total optical length of the optical lens.

18. The optical lens according to any one of claims 1 to 5, characterized in that: The optical lens satisfies at least one of the following conditions: 1≤R1 / R3≤1.0957; 0.9085≤R2 / R4≤1.0698; 1.0096≤(R1 / R3) / (R2 / R4)≤1.1007; -2.3679≤F1 / F≤-1.8367; -3.3378≤F2 / F≤-2.5238; 0.6466≤F1 / F2≤0.7413; 0.0013≤|(HF×θ) / (F×θ)|≤0.0581; 0.4513≤F / H≤0.4919; ; 54.1503°≤(FOV×F) / H≤ 59.0309°; -3.2297≤F2 / R4≤-2.9079; 1.5459≤F3 / F≤4.3744; 1.9111≤F3 / d4≤8.1832; 2.9446≤|F45| / F≤34.2995; 0.0405≤d4 / TTL ≤0.1296; 0.1095≤(d8+d9) / TTL≤0.246; -0.5198≤(R2-R3) / (R2+R3)≤-0.4305; -1.0427≤F2 / F6≤-0.5136; 5.9953≤TTL / F≤7.7313; 4.148≤TTL / H / FOV×180°≤5.6415; 1.915≤F / ENPD≤1.9151; 3.1172≤F6 / F≤4.9359; 0.2398≤BFL / TTL≤0.3291; 0.0066≤|D12-H| / BFL≤0.3682; Wherein, R1 is the curvature radius of the first side surface of the first lens, R3 is the curvature radius of the first side surface of the second lens, R2 is the curvature radius of the second side surface of the first lens, R4 is the curvature radius of the second side surface of the second lens, 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, F45 is the combined focal length of the fourth lens and the fifth lens, F6 is the effective focal length of the sixth 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, FOV is the maximum field of view of the optical lens, d4 is the spacing distance between the second lens and the third lens along the optical axis, TTL is the total optical length of the optical lens, d8 is the center thickness of the fourth lens, d9 is the center thickness of the fifth lens, ENPD is the entrance pupil diameter of the optical lens, BFL is the optical back focus of the optical lens, and D12 is the maximum clear aperture of the second side surface of the sixth lens corresponding to the maximum field of view of the optical lens.

19. The optical lens according to any one of claims 1 to 5, characterized in that: The optical lens satisfies at least one of the following conditions: 0.97≤R1 / R3≤1.13; 0.85≤R2 / R4≤1.12; 0.98≤(R1 / R3) / (R2 / R4)≤1.13; -2.53≤F1 / F≤-1.65; -3.6≤F2 / F≤-2.3; 0.61≤F1 / F2≤0.77; 0.001≤|(HF*θ) / (F*θ)|≤0.08; 0.44≤F / H≤0.5; 53°≤(FOV×F) / H≤61°; -3.33≤F2 / R4≤-2.8; 1≤F3 / F≤5.7; 0.5≤F 3 / d4≤10.5; 1.5≤|F45| / F≤50; 0.03≤d4 / TTL≤0.17; 0.06≤(d8+d9) / TTL≤0.28; -0.55≤(R2-R3) / (R2+R3)≤-0.4; -1.2≤F2 / F6≤-0.35; 5.35≤TTL / F≤8.2; 3.7≤TTL / H / FOV*180°≤6.2; 1.9≤F / ENPD≤1.95; 2.8≤F6 / F≤5.8; 0.22≤BFL / TTL≤0.36; 0.001≤|D12-H| / BFL≤0.45; Wherein, R1 is the curvature radius of the first side surface of the first lens, R3 is the curvature radius of the first side surface of the second lens, R2 is the curvature radius of the second side surface of the first lens, R4 is the curvature radius of the second side surface of the second lens, 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, F45 is the combined focal length of the fourth lens and the fifth lens, F6 is the effective focal length of the sixth 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, FOV is the maximum field of view of the optical lens, d4 is the spacing distance between the second lens and the third lens along the optical axis, TTL is the total optical length of the optical lens, d8 is the center thickness of the fourth lens, d9 is the center thickness of the fifth lens, ENPD is the entrance pupil diameter of the optical lens, BFL is the optical back focus of the optical lens, and D12 is the maximum clear aperture of the second side surface of the sixth lens corresponding to the maximum field of view of the optical lens.

20. The optical lens according to any one of claims 1 to 5, characterized in that: The optical lens satisfies at least one of the following conditions: (FOV×F) / H≥50°; (d8+d9) / TTL≤0.35; -1≤(R2-R3) / (R2+R3)≤0; TTL / F≤8.5; TTL / H / FOV×180°≤9; F / ENPD≤2; |D12-H| / BFL≤0.45; 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, FOV is the maximum field of view angle of the optical lens, d8 is the center thickness of the fourth lens, d9 is the center thickness of the fifth lens, TTL is the total optical length of the optical lens, R3 is the curvature radius of the first side surface of the second lens, R2 is the curvature radius of the second side surface of the first lens, ENPD is the entrance pupil diameter of the optical lens, D12 is the maximum clear aperture of the second side surface of the sixth lens corresponding to the maximum field of view angle of the optical lens, and BFL is the optical back focus of the optical lens.

21. An electronic device, characterized in that: The invention comprises the optical lens according to any one of claims 1 to 20 and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

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