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, whose second side is concave; a second lens with positive optical power, whose first side is concave and whose second side is convex; a third lens with positive optical power, whose first side is convex and whose second side is concave; a fourth lens with optical power; a fifth lens with optical power, whose second side is convex; and a sixth lens with positive optical power, whose first side is convex; wherein the number of lenses with optical power in the optical lens is six; the optical power of the fourth lens is opposite to that of the fifth lens; and the optical lens satisfies: ‑1.8≤F1 / F≤‑0.9; 0.04≤(d2+d4) / TTL≤0.16; 0.3≤d6 / F≤1.2; 1.8≤F6 / F≤4.

Description

Technical Field

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

[0002] In recent years, with the continuous advancement of imaging technology, the application scope of optical lenses has become increasingly wide.

[0003] In order to meet the requirements of miniaturized electronic devices, the miniaturization of optical lenses is crucial, and the optical lenses are required to have a smaller aperture. In addition, while achieving miniaturization, higher requirements are also placed on the performance of optical lenses, such as high resolution and good compatibility. Summary of the invention

[0004] On one hand, the present application provides an optical lens. 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, whose second side surface is concave; a second lens with positive optical power, whose first side surface is concave and whose second side surface is convex; a third lens with positive optical power, whose first side surface is convex and whose second side surface is concave; a fourth lens with optical power; a fifth lens with optical power, whose second side surface is convex; and a sixth lens with positive optical power, whose first side surface is convex; wherein the number of lenses with optical power in the optical lens is six; the optical power of the fourth lens is equal to that of the fifth lens. On the contrary; the optical lens satisfies: -1.8≤F1 / F≤-0.9; 0.04≤(d2+d4) / TTL≤0.16; 0.3≤d6 / F≤1.2; 1.8≤F6 / F≤4, wherein F1 is the focal length of the first lens, F is the focal length of the entire optical lens group, d2 is the air spacing between the first lens and the second lens on the optical axis, d4 is the air spacing between the second lens and the third lens on the optical axis, TTL is the total optical length of the optical lens, d6 is the air spacing between the third lens and the fourth lens on the optical axis, and F6 is the focal length of the sixth lens.

[0005] In one or more embodiments, the first side surface of the first lens is a convex surface or a flat surface.

[0006] In one or more embodiments, the fourth lens has positive optical power, a first side surface thereof is concave or convex, and a second side surface thereof is convex.

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

[0008] In one or more embodiments, the fifth lens has positive optical power and its first side surface is convex.

[0009] In one or more embodiments, the fifth lens has negative optical power, and the first side surface thereof is concave.

[0010] In one or more embodiments, the second side surface of the sixth lens is a plane or a concave surface.

[0011] In one or more embodiments, the total optical length TTL of the optical lens and the back focal length BFL of the optical lens satisfy: 14≤TTL / BFL≤19.5.

[0012] In one or more embodiments, the focal length value F2 of the second lens and the focal length value F3 of the third lens satisfy: 0.2≤F2 / F3≤2.6.

[0013] In one or more embodiments, the air interval d6 between the third lens and the fourth lens on the optical axis and the total optical length TTL of the optical lens satisfy: 0.1≤d6 / TTL≤0.3.

[0014] In one or more embodiments, the focal length value F2 of the second lens and the focal length value F of the entire optical lens group satisfy: 1≤F2 / F≤13.5.

[0015] In one or more embodiments, the focal length value F3 of the third lens and the focal length value F of the entire optical lens group satisfy: 0.5≤F3 / F≤15.

[0016] In one or more embodiments, the combined focal length value F45 of the fourth lens and the fifth lens and the entire focal length value F of the optical lens group satisfy: 1.2≤F45 / F≤1.9.

[0017] In one or more embodiments, a radius of curvature R1 of the first side surface of the first lens and a focal length F1 of the first lens satisfy: R1 / F1≤-1.

[0018] In one or more embodiments, the maximum effective aperture D11 of the first side of the sixth lens corresponding to the maximum field angle of the optical lens, the back focal length BFL of the optical lens, and the image height H corresponding to the maximum field angle of the optical lens satisfy: 1.8mm≤D11*BFL / H≤4.3mm.

[0019] In one or more embodiments, the entire focal length value F of the optical lens, the curvature radius R3 of the first side surface of the second lens, and the curvature radius R4 of the second side surface of the second lens satisfy: 0.3≤|F / R3|+|F / R4|≤2.

[0020] In one or more embodiments, a curvature radius R5 of the first side surface of the third lens, a curvature radius R6 of the second side surface of the third lens, and a center thickness d5 of the third lens satisfy: 0.55≤R5 / (R6+d5)≤0.75.

[0021] In one or more embodiments, a radius of curvature R11 of the first side surface of the sixth lens and a focal length F of the entire optical lens group satisfy: 0.4≤R11 / F≤1.7.

[0022] In one or more embodiments, an air interval d10 between the fifth lens and the sixth lens on the optical axis and a total optical length TTL of the optical lens satisfy: 0.25≤d10 / TTL≤0.45.

[0023] In one or more embodiments, the focal length F3 of the third lens and the curvature radius R5 of the first side surface of the third lens satisfy: 1≤F3 / R5≤23.

[0024] In one or more embodiments, the optical lens satisfies at least one of the following conditions: 0.7≤|R5 / R6|≤1.3; 0.1≤|SAG3 / SAG4|≤1; 1.15≤D11 / H≤1.65; 9≤TTL / DMAX≤12; 0.1≤|(|R2|-|R3|) / (|R2|+|R3|)|≤1.1; 0.7≤|R3 / R4|≤2.3; 4.8≤TTL / F≤5.3; -4≤R4 / R5≤-0.5; -1E+07≤(F2+F3) / (dn(2) / dt(2)+dn(3) / dt(3))≤-2E+05; 5≤arctan(SAG10 / D10)≤20, wherein R5 is the radius of curvature of the first side surface of the third lens, R6 is the radius of curvature of the second side surface of the third lens, SAG3 is the sag of the first side surface of the second lens, S AG4 is the sag of the second side surface of the second lens, D11 is the maximum effective aperture of the first side surface of the sixth lens corresponding to the maximum field angle of the optical lens, DMAX is the maximum clear aperture corresponding to the maximum field angle of the optical lens, H is the image height corresponding to the maximum field angle of the optical lens, TTL is the total optical length of the optical lens, F is the focal length of the entire group of the optical lens, R2 is the curvature radius of the second side surface of the first lens, R3 is the curvature radius of the first side surface of the second lens, R4 is the curvature radius of the second side surface of the second lens, F2 is the focal length of the second lens, F3 is the focal length of the third lens, dn(2) / dt(2) is the temperature coefficient of the second lens, dn(3) / dt(3) is the temperature coefficient of the third lens, SAG10 is the sag of the second side surface of the fifth lens, and D10 is the maximum effective aperture of the second side surface of the fifth lens corresponding to the maximum field angle of the optical lens.

[0025] In one or more embodiments, the optical lens satisfies at least one of the following conditions: 15.4885≤TTL / BFL≤18.4008; 1.0913≤|R3 / R4|≤2.0358; 4.9478≤TTL / F≤5.2112; 0.4390≤F2 / F3≤1.9005; 0.8348≤|R5 / R6|≤1.2060; 0.1188≤d6 / TTL≤0.1961; 0.3229≤d10 / TTL≤0.4267; 3.5187≤F2 / F≤11.1846; 4.0033≤F3 / F≤9.9176; 1.3635≤F45 / F≤1.7251; 2.1942≤F6 / F≤3. 5932;0.2647≤|SAG3 / SAG4|≤0.7530;2.4311mm≤D11*BFL / H≤3.7185mm;1.2071≤D11 / H≤1.4874;10.158 9≤TTL / DMAX≤11.7517; 0.1929≤|(|R2|-|R3|) / (|R2|+|R3|)|≤0.7613; 0.7001≤|F / R3|+|F / R4|≤1.71 75;0.6089≤R5 / (R6+d5)≤0.7128;-9.567E+06≤(F2+F3) / (dn(2) / dt(2)+dn(3) / dt(3))≤-2.873E+05; 7 .9355≤arctan(SAG10 / D10)≤16.6189; 0.0606≤(d2+d4) / TTL≤0.1492; 0.6087≤R11 / F≤1.3985; -3.3382 ≤R4 / R5≤-1.1991; 0.6166≤d6 / F≤1.0147; R1 / F1≤-1.5305; 5.5679≤F3 / R5≤18.9972; -1.5436≤F1 / F≤-1.0150, where TTL is the total optical length of the optical lens, BFL is the back focal length of the optical lens, R1 is the curvature radius of the first side surface of the first lens, R2 is the curvature radius of the second side surface of the first lens, R3 is the curvature radius of the first side surface of the second lens, R4 is the curvature radius of the second side surface of the second lens, R5 is the curvature radius of the first side surface of the third lens, R6 is the curvature radius of the second side surface of the third lens, R11 is the curvature radius of the first side surface of the sixth lens, F1 is the focal length of the first lens, F2 is the focal length of the second lens, F3 is the focal length of the third lens, F45 is the combined focal length of the fourth lens and the fifth lens, F6 is the focal length of the sixth lens, F is the focal length of the entire group of optical lenses, d2 is the air interval between the first lens and the second lens on the optical axis, d4 is the air distance between the second lens and the first lens, and d5 is the air distance between the second lens and the first lens. The air spacing between the third lens and the fourth lens on the optical axis, d6 is the air spacing between the third lens and the fourth lens on the optical axis, d10 is the air spacing between the fifth lens and the sixth lens on the optical axis, H is the image height corresponding to the maximum field angle of the optical lens, SAG3 is the sagittal height of the first side surface of the second lens, SAG4 is the sagittal height of the second side surface of the second lens, SAG10 is the sagittal height of the second side surface of the fifth lens, D10 is the maximum effective aperture of the second side surface of the fifth lens corresponding to the maximum field angle of the optical lens, D11 is the maximum effective aperture of the first side surface of the sixth lens corresponding to the maximum field angle of the optical lens, DMAX is the maximum clear aperture corresponding to the maximum field angle of the optical lens, dn(2) / dt(2) is the temperature coefficient of the second lens, and dn(3) / dt(3) is the temperature coefficient of the third lens.

[0026] 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.

[0027] According to the embodiment of the present application, the optical lens comprises six lenses with optical power, which are respectively the first lens to the sixth lens arranged in sequence from the first side to the second side along the optical axis, wherein the optical lens can satisfy the following conditional formulas: -1.8≤F1 / F≤-0.9; 0.04≤(d2+d4) / TTL≤0.16; 0.3≤d6 / F≤1.2; 1.8≤F6 / F≤4, and the focal length value of the first lens is controlled to be negative, which is conducive to collecting light at a large angle and smoothly transitioning to the next lens to reduce the sensitivity of the system; at the same time, the distances between the first lens and the second lens, and between the second lens and the third lens are controlled to be small, which is conducive to miniaturization and creates conditions for subsequent improvement of light efficiency; by lengthening the distance between the third lens and the fourth lens, the size of the structural parts near the fourth lens can be reduced while reducing the sensitivity; controlling the ratio of the focal length value of the sixth lens to the overall focal length value of the optical lens is controlled, which is conducive to improving the coupling efficiency of light, and taking into account the overall length of the lens while improving the overall system light efficiency, thereby achieving miniaturization.

[0028] The optical lens provided in the embodiment of the present application has a large back focal length and can adapt to a variety of DGP (Dynamic Ground Projection) modules; and has a small lens aperture. When applied to the field of ground dynamic projection, the outgoing light of the lighting system can be incident on the field lens at a smaller angle, thereby improving the coupling efficiency and enhancing the lighting efficiency of the entire system.

[0029] In summary, according to the embodiments of the present application, an optical lens is provided that can achieve miniaturization, high resolution, and adapt to a variety of DGP modules. It can be used in the field of ground dynamic projection, has a smaller front port diameter, and can provide a better appearance performance in a limited space. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Other features, purposes and advantages of the present utility model will become more apparent through the detailed description of the following embodiments in conjunction with the accompanying drawings. In the accompanying drawings:

[0031] Figure 1 is a schematic structural diagram of an optical lens according to Example 1 of the present application;

[0032] Figure 2 Schematic diagram of the MTF curve of the optical lens of Example 1 of the present application;

[0033] Figure 3 is a schematic structural diagram of an optical lens according to Embodiment 2 of the present application;

[0034] Figure 4 Schematic diagram of the MTF curve of the optical lens of Example 2 of the present application;

[0035] Figure 5 is a schematic structural diagram of an optical lens according to Example 3 of the present application;

[0036] Figure 6 Schematic diagram of the MTF curve of the optical lens of Example 3 of the present application;

[0037] Figure 7 is a schematic structural diagram of an optical lens according to Embodiment 4 of the present application;

[0038] Figure 8 Schematic diagram of the MTF curve of the optical lens of Example 4 of the present application;

[0039] Fig. 9 is a schematic structural diagram of an optical lens according to Example 5 of the present application;

[0040] Fig.10 Schematic diagram of the MTF curve of the optical lens of Example 5 of the present application;

[0041] Fig.11 is a schematic structural diagram of an optical lens according to Example 6 of the present application;

[0042] Fig.12 Schematic diagram of the MTF curve of the optical lens of Example 6 of the present application;

[0043] Fig.13 is a schematic structural diagram of an optical lens according to Example 7 of the present application;

[0044] Fig.14 Schematic diagram of the MTF curve of the optical lens of Example 7 of the present application;

[0045] Fig.15 is a schematic structural diagram of an optical lens according to Example 8 of the present application;

[0046] Fig.16 Schematic diagram of the MTF curve of the optical lens of Example 8 of the present application;

[0047] Fig.17 is a schematic structural diagram of an optical lens according to Example 9 of the present application;

[0048] Fig.18 Schematic diagram of the MTF curve of the optical lens of Example 9 of the present application;

[0049] Fig.19 is a schematic structural diagram of an optical lens according to Embodiment 10 of the present application;

[0050] Fig. 20 Schematic diagram of the MTF curve of the optical lens of Example 10 of the present application;

[0051] Fig.21 is a schematic structural diagram of an optical lens according to Example 11 of the present application;

[0052] Fig. 22 Schematic diagram of the MTF curve of the optical lens of Example 11 of the present application;

[0053] Fig.23 is a schematic structural diagram of an optical lens according to Example 12 of the present application;

[0054] Fig.24 Schematic diagram of the MTF curve of the optical lens of Example 12 of the present application;

[0055] Fig.25 is a schematic structural diagram of an optical lens according to Example 13 of the present application;

[0056] Fig.26 Schematic diagram of the MTF curve of the optical lens of Example 13 of the present application;

[0057] Fig. 27is a schematic structural diagram of an optical lens according to Example 14 of the present application;

[0058] Fig.28 Schematic diagram of the MTF curve of the optical lens of Example 14 of the present application;

[0059] Fig.29 It is a light trend diagram of the optical lens according to the implementation mode of the present application. DETAILED DESCRIPTION

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] The features, principles and other aspects of the present application are described in detail below.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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).

[0073] In an exemplary embodiment, the first lens may have negative power, a convex first side surface, and a concave second side surface. The first lens has negative power and a convex first side surface, which is conducive to collecting light at a large angle and smoothly transitioning to the next lens. In addition, in vehicle lighting applications, the meniscus shape of the first lens can provide a better appearance.

[0074] In an exemplary embodiment, the first lens may have negative power, a first side surface thereof is a plane, and a second side surface is a concave surface. The first lens has negative power and a first side surface thereof is a plane, which is conducive to smooth transition of light at a large angle to the rear lens.

[0075] In an exemplary embodiment, the second lens may have positive optical power, a first side surface thereof is concave, and a second side surface is convex. The optical power of the second lens is positive, and the shape is a meniscus shape concave toward the object side, which is conducive to converging the light while making the light trend smoothly transition, thereby balancing the large aberration generated after the light passes through the first lens.

[0076] In an exemplary embodiment, the third lens may have positive power, a first side surface thereof is convex, and a second side surface thereof is concave. The third lens has positive power and a convex first surface, which is conducive to further converging the light passing through the second lens, and also creates conditions for reducing the size of the structure near the subsequent fourth lens and the fifth lens.

[0077] In an exemplary embodiment, the fourth lens may have positive power and may have a biconvex surface. The fourth lens has positive power, and both the first side surface and the second side surface are convex, which can well converge light, further reduce the structural size near the fourth lens and the fifth lens, and provide the possibility for the illumination light to enter the lens at a small angle, thereby facilitating the improvement of coupling efficiency and the improvement of the light efficiency of the whole system.

[0078] In an exemplary embodiment, the fourth lens may have positive power and may have a concave-convex surface. The fourth lens has positive power and a first side surface that is concave, which can receive light entering through the third lens and converge it to the fourth lens, thereby reducing the loss of light and further reducing the size of the structure near the fourth lens and the fifth lens.

[0079] In an exemplary embodiment, the fourth lens may have negative power and may have a biconcave shape. The fourth lens has negative power and a biconcave shape, which can collect the light entering through the third lens and properly diffuse it, making the light trend more stable and balancing the large aberration generated after passing through the third lens.

[0080] In an exemplary embodiment, the fourth lens may have negative power and may have a convex-concave surface. The fourth lens has negative power and a convex first side surface, which can properly diverge the light entering through the third lens and balance the large aberration generated after passing through the third lens.

[0081] In an exemplary embodiment, the fifth lens may have negative power and may have a concave-convex surface. The fifth lens has a negative power and is combined with a fourth lens having a positive power to balance the chromatic aberration of the entire system and to allow the light focused by the aperture to smoothly transition to the next lens.

[0082] In an exemplary embodiment, the fifth lens may have positive power and may have a biconvex surface. The positive power of the fifth lens, when used with the negative power of the fourth lens, can balance the chromatic aberration of the entire system and allow the light converged by the aperture to smoothly transition to the next lens; in addition, the positive power is also conducive to reducing the aperture of the rear element.

[0083] In an exemplary embodiment, the fourth lens and the fifth lens have opposite optical powers. By forming a positive and negative optical power combination with the fourth lens and the fifth lens, the chromatic aberration of the entire system can be effectively balanced, and the light converged by the aperture can be smoothly transitioned to the next lens.

[0084] In an exemplary embodiment, the sixth lens may have positive optical power, a first side surface thereof is a convex surface, and a second side surface is a plane surface. The optical power of the sixth lens is positive, and the first side surface is a convex surface, which is conducive to light convergence, and the second side surface is a plane surface, which can make the converged light smoothly transition to the rear, reduce light loss, improve the light flux of the system, and achieve higher imaging quality.

[0085] In an exemplary embodiment, the sixth lens may have positive optical power, a first side surface thereof is convex, and a second side surface thereof is concave. The optical power of the sixth lens is positive, and the second side surface is concave, so that the light entering the sixth lens is appropriately diverged and then smoothly transitions to the rear, which is conducive to reducing light loss and improving imaging quality.

[0086] In an exemplary embodiment, the optical lens according to the present application may satisfy: -1.8≤F1 / F≤-0.9; wherein F1 is the focal length value of the first lens, and F is the focal length value of the entire group of optical lenses. More specifically, F1 and F may further satisfy: -1.55≤F1 / F≤-1.01. Further, F1 and F may satisfy: -1.5436≤F1 / F≤-1.0150. Meeting the above conditional formula, by controlling the focal length value of the first lens to be negative, and at the same time controlling the ratio of the focal length value of the first lens to the focal length value of the entire group of optical lenses, it is beneficial to collect light at a large angle to smoothly enter the optical system, improve resolution, and reduce system sensitivity.

[0087] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.04≤(d2+d4) / TTL≤0.16, wherein d2 is the air spacing between the first lens and the second lens on the optical axis, d4 is the air spacing between the second lens and the third lens on the optical axis, and TTL is the total optical length of the optical lens, that is, the distance from the first side surface of the first lens to the imaging surface (or image source surface) of the optical lens on the optical axis. More specifically, the optical lens may further satisfy: 0.06≤(d2+d4) / TTL≤0.15. Further, the optical lens may satisfy: 0.0606≤(d2+d4) / TTL≤0.1492. By satisfying the above conditional formula, by controlling the spacing between the first lens and the second lens and between the second lens and the third lens to be smaller, it is beneficial to make the light entering the optical system converge quickly, and create conditions for subsequent improvement of light efficiency while achieving miniaturization.

[0088] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.3≤d6 / F≤1.2, wherein d6 is the air spacing between the third lens and the fourth lens on the optical axis, and F is the focal length value of the entire group of the optical lens. More specifically, the optical lens may further satisfy: 0.57≤d6 / F≤1.05. Furthermore, the optical lens may satisfy: 0.6166≤d6 / F≤1.0147. By satisfying the above conditional formula, by lengthening the spacing distance between the third lens and the fourth lens, and reasonably controlling the ratio of the spacing distance to the focal length value of the entire group of the optical lens, the incident light can be smoothed and the size of the structural components near the fourth lens can be reduced; in addition, a large spacing distance is conducive to reducing the turning angle of the light, thereby reducing sensitivity.

[0089] In an exemplary embodiment, the optical lens according to the present application may satisfy: 1.8≤F6 / F≤4, wherein F is the focal length value of the entire optical lens group, and F6 is the focal length value of the sixth lens. More specifically, the optical lens may further satisfy: 2.19≤F6 / F≤3.6. Furthermore, the optical lens may satisfy: 2.1942≤F6 / F≤3.5932. By satisfying the above conditional formula, by controlling the ratio of the focal length value of the sixth lens to the focal length value of the entire optical lens group within a reasonable range, it is beneficial to improve the coupling efficiency of light, and while improving the overall system light efficiency, take into account the overall length of the lens, thereby achieving miniaturization. In addition, by reasonably controlling the focal length value of the sixth lens, it has a larger positive focal length. On the one hand, the positive focal length can properly converge the light so that the light spot reaching the chip surface matches the chip size. On the other hand, the large focal length can also reduce the sensitivity of the sixth lens, and the low sensitivity can accept a larger tilt tolerance. When giving an inclined projection, the sixth lens can be tilted along with the chip, thereby improving the far-end resolution without reducing the near-end resolution.

[0090] refer to Fig.29As shown, the optical lens according to the implementation mode of the present application controls the focal length of the first lens to be negative, which is beneficial to collecting light at a large angle and smoothly transitioning to the next lens to reduce the system sensitivity; controls the focal lengths of the second lens and the third lens to be positive, continuously converges the light, and is beneficial to improving the light efficiency; at the same time, controls the distances between the first lens and the second lens, and the second lens and the third lens to be smaller, which is beneficial to achieving miniaturization while creating conditions for subsequent improvement of light efficiency; by lengthening the distance between the third lens and the fourth lens, it is possible to reduce the sensitivity while reducing the size of the structural parts near the fourth lens; controls the ratio of the focal length of the sixth lens to the overall focal length of the optical lens, which is beneficial to improving the coupling efficiency of light, and takes into account the overall length of the lens while improving the overall system light efficiency, thereby achieving miniaturization. Fig.29 It can be seen that according to the optical lens of the embodiment of the present application, the light trend is smoothed by the reasonable combination of the optical power and surface shape of each lens, and the reasonable setting of the on-axis spacing of each lens, so that a miniaturized, high-resolution lens design can be achieved, and changes in the external environment will not cause a significant decrease in resolution.

[0091] In an exemplary embodiment, the optical lens according to the present application may satisfy: 14≤TTL / BFL≤19.5, wherein TTL is the total optical length of the optical lens; BFL is the back focal length of the optical lens, that is, the distance from the second side surface of the sixth lens to the imaging surface (or image source surface) of the optical lens on the optical axis. More specifically, TTL and BFL may further satisfy: 15.48≤TTL / BFL≤18.41. Furthermore, the optical lens may satisfy: 15.4885≤TTL / BFL≤18.4008. Satisfying the above conditional formula, under the condition of the same image height, makes the back focal length of the system smaller, which is conducive to miniaturization of the optical system.

[0092] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.7≤|R3 / R4|≤2.3, wherein R3 is the radius of curvature of the first side surface of the second lens; R4 is the radius of curvature of the second side surface of the second lens. More specifically, the optical lens may satisfy: 1.09≤|R3 / R4|≤2.04. Furthermore, the optical lens may satisfy: 1.0913≤5≤2.0358. Meeting the above conditional formula and controlling the ratio range of the radius of curvature of the first side surface and the second side surface of the second lens is beneficial to the smooth transition of light and the improvement of resolution. At the same time, the radius of curvature of the first side surface and the second side surface of the second lens are closer, which is beneficial to improving the performance of the entire optical system at high and low temperatures.

[0093] In an exemplary embodiment, the optical lens according to the present application may satisfy: 4.8≤TTL / F≤5.3, wherein TTL is the total optical length of the optical lens; F is the focal length value of the entire group of the optical lens. More specifically, TTL and F may further satisfy: 4.94≤TTL / F≤5.22. Further, the optical lens may satisfy: 4.9478≤TTL / F≤5.2112. Satisfying the above conditional formula and reasonably controlling the ratio of the total optical length of the optical lens to the focal length value of the entire group is conducive to miniaturization of the optical system.

[0094] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.2≤F2 / F3≤2.6, wherein F2 is the focal length value of the second lens, and F3 is the focal length value of the third lens. More specifically, the optical lens may further satisfy: 0.43≤F2 / F3≤1.91. Furthermore, the optical lens may satisfy: 0.4390≤F2 / F3≤1.9005. Meeting the above conditional formula and reasonably allocating the focal length values ​​of the second lens and the third lens contributes to a smooth transition of light and reduces sensitivity, while also contributing to achieving good thermal compensation, so that the entire optical system performs well at high and low temperatures and obtains good temperature performance.

[0095] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.1≤d6 / TTL≤0.3, wherein d6 is the air spacing between the third lens and the fourth lens on the optical axis, and TTL is the total optical length of the optical lens. More specifically, the optical lens may further satisfy: 0.11≤d6 / TTL≤0.20. Furthermore, the optical lens may satisfy: 0.1188≤d6 / TTL≤0.1961. Satisfying the above conditional formula and controlling the spacing distance between the third lens and the fourth lens will help converge the light to reduce the light spot reaching the fourth lens and reduce the size of the structural components near the fourth lens; at the same time, a large spacing distance will also reduce the turning angle of the light, which will help reduce sensitivity.

[0096] In an exemplary embodiment, the optical lens according to the present application may satisfy: 1≤F2 / F≤13.5, wherein F2 is the focal length value of the second lens, and F is the focal length value of the entire group of the optical lens. More specifically, the optical lens may further satisfy: 3.5≤F2 / F≤11.2. Furthermore, the optical lens may satisfy: 3.5187≤F2 / F≤11.1846. By satisfying the above conditional formula and reasonably setting the ratio of the focal length value of the second lens to the focal length value of the entire group of the optical lens, the influence of the second lens on the focal length value of the entire group under high and low temperature conditions can be adjusted, which can effectively ensure the performance of the optical system under high and low temperature conditions. At the same time, the second lens having a larger focal length value can also play a role in smoothly transitioning light, which helps to reduce sensitivity.

[0097] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.5≤F3 / F≤15, wherein F3 is the focal length value of the third lens, and F is the focal length value of the entire group of optical lenses. More specifically, the optical lens may further satisfy: 4≤F3 / F≤9.95. Furthermore, the optical lens may satisfy: 4.0033≤F3 / F≤9.9176. By satisfying the above conditional formula, by reasonably setting the ratio of the focal length value of the third lens to the focal length value of the entire group of optical lenses, the third lens with a positive focal length can smoothly transition the light while focusing the light, which is conducive to miniaturization and reducing low sensitivity; at the same time, the focal length value of the third lens is relatively large, which is conducive to thermal compensation under high and low temperatures.

[0098] In an exemplary embodiment, the optical lens according to the present application may satisfy: 1.2≤F45 / F≤1.9, wherein F45 is the combined focal length value of the fourth lens and the fifth lens, and F is the focal length value of the entire group of the optical lens. More specifically, the optical lens may further satisfy: 1.35≤F45 / F≤1.73. Furthermore, the optical lens may satisfy: 1.3635≤F45 / F≤1.7251. By satisfying the above conditional formula and reasonably allocating the combined focal length of the glued lenses, light can enter the optical system smoothly, while reducing chromatic aberration and introducing less other aberrations; at the same time, a positive combined focal length value is conducive to convergence of light, reducing the aperture of the rear element, ensuring light throughput, and improving resolution; in addition, a positive combined focal length value can also deflect light, thereby ensuring the overall miniaturization effect.

[0099] In an exemplary embodiment, the optical lens according to the present application may satisfy: R1 / F1≤-1, wherein R1 is the radius of curvature of the first side surface of the first lens, and F1 is the focal length value of the first lens. More specifically, the optical lens may further satisfy: R1 / F1≤-1.5. Further, the optical lens may satisfy: -infinity≤R1 / F1≤-1.5305. Satisfying the above conditional formula, controlling the first side surface of the first lens to be relatively flat, and cooperating with the negative focal length of the first lens, is conducive to the smooth incidence of large-angle light and reduces the sensitivity of the system.

[0100] In an exemplary embodiment, the optical lens according to the present application may satisfy: 1.8mm≤D11*BFL / H≤4.3mm, wherein D11 is the maximum effective aperture of the first side of the sixth lens corresponding to the maximum field angle of the optical lens, BFL is the back focal length of the optical lens, and H is the image height corresponding to the maximum field angle of the optical lens. More specifically, the optical lens may further satisfy: 2.43mm≤D11*BFL / H≤3.72mm. Furthermore, the optical lens may satisfy: 2.4311mm≤D11*BFL / H≤3.7185mm. Meeting the above conditional formula, under the same imaging plane and the same image height conditions, controlling the back focal length to be moderate helps to achieve a small CRA without increasing the overall length of the optical lens.

[0101] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.3≤|F / R3|+|F / R4|≤2, wherein F is the focal length value of the entire group of the optical lens, R3 is the radius of curvature of the first side of the second lens, and R4 is the radius of curvature of the second side of the second lens. More specifically, the optical lens may further satisfy: 0.70≤|F / R3|+|F / R4|≤1.72. Furthermore, the optical lens may satisfy: 0.7001≤|F / R3|+|F / R4|≤1.7175. By satisfying the above conditional formula, the surface curvature of the second lens is controlled to be relatively gentle and in a meniscus shape, which can make the light transition smoothly and reduce sensitivity; in addition, when the second lens adopts a plastic lens, the high and low temperature deformation of the meniscus-shaped lens is relatively stable, which can bring good thermal compensation performance.

[0102] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.55≤R5 / (R6+d5)≤0.75, wherein R5 is the radius of curvature of the first side of the third lens, R6 is the radius of curvature of the second side of the third lens, and d5 is the center thickness of the third lens. More specifically, the optical lens may further satisfy: 0.60≤R5 / (R6+d5)≤0.72. Further, the optical lens may satisfy: 0.6089≤R5 / (R6+d5)≤0.7128. By satisfying the above conditional formula, the shape of the third lens is controlled to be close to concentric circles, so that there is an optical path difference between the peripheral light and the central light, the central light is diverged, and enters the rear optical system, and it helps to reduce the diameter of the front port of the lens and reduce the volume, thereby facilitating miniaturization and reducing costs.

[0103] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.4≤R11 / F≤1.7, wherein R11 is the radius of curvature of the first side of the sixth lens, and F is the focal length value of the entire group of the optical lens. More specifically, the optical lens may further satisfy: 0.60≤R11 / F≤1.399. Further, the optical lens may satisfy: 0.6087≤R11 / F≤1.3985. Satisfying the above conditional formula, the first side of the sixth lens is a convex surface, which is conducive to converging light, and quickly shrinking the light on the basis of improving the telecentricity of the front, thereby achieving miniaturization.

[0104] In an exemplary embodiment, the optical lens according to the present application may satisfy: -4≤R4 / R5≤-0.5, wherein R4 is the radius of curvature of the second side of the second lens, and R5 is the radius of curvature of the first side of the third lens. More specifically, the optical lens may further satisfy: -3.34≤R4 / R5≤-1.1. Further, the optical lens may satisfy: -3.3382≤R4 / R5≤-1.1991. By satisfying the above conditional formula, by controlling the second side of the second lens and the first side of the third lens to be convex, it is beneficial to converge light, reduce the distance between the second lens and the third lens, and create favorable conditions for miniaturization.

[0105] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.25≤d10 / TTL≤0.45, wherein d10 is the air spacing between the fifth lens and the sixth lens on the optical axis, and TTL is the total optical length of the optical lens. More specifically, the optical lens may further satisfy: 0.32≤d10 / TTL≤0.43. Furthermore, the optical lens may satisfy: 0.3229≤d10 / TTL≤0.4267. Satisfying the above conditional formula and controlling the spacing distance between the fifth lens and the sixth lens is conducive to compatibility with a variety of lighting systems. The large space allows the outgoing light of the lighting system to be incident on the sixth lens at a smaller angle, thereby improving the coupling efficiency and increasing the luminous flux of the entire system.

[0106] In an exemplary embodiment, the optical lens according to the present application may satisfy: 1≤F3 / R5≤23, wherein F3 is the focal length of the third lens, and R5 is the radius of curvature of the first side of the third lens. More specifically, the optical lens may further satisfy: 5.5≤F3 / R5≤19.0. Further, the optical lens may satisfy: 5.5679≤F3 / R5≤18.9972. Satisfying the above conditional formula and controlling the ratio of the radius of curvature of the first side of the third lens to the focal length of the third lens is conducive to quickly collecting large-angle light and smoothly transitioning to the rear, thereby achieving miniaturization.

[0107] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.7≤|R5 / R6|≤1.3, wherein R5 is the radius of curvature of the first side of the third lens, and R6 is the radius of curvature of the second side of the third lens. More specifically, the optical lens may further satisfy: 0.83≤|R5 / R6|≤1.21. Still further, the optical lens may satisfy: 0.8348≤|R5 / R6|≤1.2060. Meeting the above conditional formula and reasonably controlling the radius of curvature of the first side and the second side of the third lens is conducive to achieving a smooth transition of light, improving resolution, and ensuring that the entire optical system performs well at high and low temperatures.

[0108] In an exemplary embodiment, the optical lens according to the present application may satisfy: H / TTL≤0.1, where H is the image height corresponding to the maximum field angle of the optical lens, and TTL is the total optical length of the optical lens. Furthermore, the optical lens may satisfy: H / TTL≤0.0715. When the above conditional formula is satisfied, under the condition of the same image height, the total optical length of the system is smaller, which is conducive to miniaturization of the system.

[0109] In an exemplary embodiment, the optical lens according to the present application may satisfy: 2.5≤F / H, where F is the focal length value of the entire set of optical lenses, and H is the image height corresponding to the maximum field angle of the optical lens. Furthermore, the optical lens may satisfy: 2.7871≤F / H. Satisfying the above conditional formula, by controlling the ratio of the focal length value of the entire set of optical lenses to the image height within a certain range, it is beneficial to improve the resolution, and at the same time, the focal length can match a smaller chip.

[0110] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.1≤|SAG3 / SAG4|≤1, wherein SAG3 is the sagittal height of the first side surface of the second lens, and SAG4 is the sagittal height of the second side surface of the second lens. More specifically, the optical lens may further satisfy: 0.26≤|SAG3 / SAG4|≤0.76. Further, the optical lens may satisfy: 0.2647≤|SAG3 / SAG4|≤0.7530. Satisfying the above conditional formula and reasonably controlling the sagittal height of the front and rear surfaces of the second lens is conducive to the smooth transition of light, thereby reducing the sensitivity of the system.

[0111] In an exemplary embodiment, the optical lens according to the present application may satisfy: 1.15≤D11 / H≤1.65, wherein D11 is the maximum effective aperture of the first side of the sixth lens corresponding to the maximum field angle of the optical lens, and H is the image height corresponding to the maximum field angle of the optical lens. More specifically, the optical lens may further satisfy: 1.2≤D11 / H≤1.49. Furthermore, the optical lens may satisfy: 1.2071≤D11 / H≤1.4874. When the above conditional formula is met, under the same imaging plane and the same image height, when the maximum effective aperture of the first side of the last lens is larger, it is beneficial for the main light to be emitted in parallel to the imaging plane, which is in turn beneficial for achieving a small CRA.

[0112] In an exemplary embodiment, the optical lens according to the present application may satisfy: 9≤TTL / DMAX≤12, wherein TTL is the total optical length of the optical lens, and DMAX is the maximum aperture corresponding to the maximum field of view of the optical lens. More specifically, the optical lens may further satisfy: 10.15≤TTL / DMAX≤11.76. Furthermore, the optical lens may satisfy: 10.1589≤TTL / DMAX≤11.7517. By satisfying the above conditional formula, by reasonably controlling the ratio of the total optical length to the maximum aperture within a certain range, the length of the lens can be effectively limited, which is conducive to the compact design of the entire optical system and miniaturization.

[0113] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.1≤|(|R2|-|R3|) / (|R2|+|R3|)|≤1.1, wherein R2 is the radius of curvature of the second side surface of the first lens, and R3 is the radius of curvature of the first side surface of the second lens. More specifically, the optical lens may further satisfy: 0.19≤|(|R2|-|R3|) / (|R2|+|R3|)|≤0.77. Further, the optical lens may satisfy: 0.1929≤|(|R2|-|R3|) / (|R2|+|R3|)|≤0.7613. Satisfying the above conditional formula and reasonably controlling the surface shapes of the second side surface of the first lens and the first side surface of the second lens can help reduce the light turning angle between the two optical surfaces, make the light transition smoothly, and reduce the sensitivity of the first lens and the second lens.

[0114] In an exemplary embodiment, the optical lens according to the present application may satisfy: |(HF*θ) / (F*θ)|≤1, wherein H is the image height corresponding to the maximum field angle of the optical lens, F is the focal length value of the entire set of the optical lens, and θ is the arc value corresponding to the maximum field angle of the optical lens. Furthermore, the optical lens may satisfy: 0.9823≤|(HF*θ) / (F*θ)|≤0.9828. Meeting the above conditional formula ensures that the focal length of the lens is increased, the imaging effect of the central area of ​​the lens imaging surface is highlighted, and the sensitivity is reduced while the field angle of the lens and the size of the imaging surface remain unchanged.

[0115] In an exemplary embodiment, the optical lens according to the present application may satisfy: -1E+07≤(F2+F3) / (dn(2) / dt(2)+dn(3) / dt(3))≤-2E+05, wherein F2 is the focal length value of the second lens, F3 is the focal length value of the third lens, dn(2) / dt(2) is the temperature coefficient of the second lens, and dn(3) / dt(3) is the temperature coefficient of the third lens. More specifically, the optical lens may further satisfy: -9.6E+06≤(F2+F3) / (dn(2) / dt(2)+dn(3) / dt(3))≤-2.8E+05. Further, the optical lens may satisfy: -9.567E+06≤(F2+F3) / (dn(2) / dt(2)+dn(3) / dt(3))≤-2.873E+05. Meeting the above conditional formula and reasonably matching the focal lengths and temperature coefficients of the second lens and the third lens can help reduce the deflection change of light at high and low temperatures of the optical lens, thereby achieving better temperature performance.

[0116] In an exemplary embodiment, the optical lens according to the present application may satisfy: 5≤arctan(SAG10 / D10)≤20, wherein SAG10 is the sagittal height of the second side of the fifth lens, and D10 is the maximum effective aperture of the second side of the fifth lens corresponding to the maximum field angle of the optical lens. More specifically, the optical lens may further satisfy: 7.9≤arctan(SAG10 / D10)≤16.65. Furthermore, the optical lens may satisfy: 7.9355≤arctan(SAG10 / D10)≤16.6189. By satisfying the above conditional formula, the second side of the fifth lens is controlled to be a relatively flat surface with a small opening angle, so that the cemented lens can smoothly transition the light to the field lens while effectively achromatizing, thereby reducing the generation of other aberrations and improving the imaging quality.

[0117] In an exemplary embodiment, the optical lens may further include an aperture, which may be used to limit the light beam to further improve the imaging quality of the optical lens. The aperture may be disposed between the third lens and the fourth lens, which is conducive to quickly and effectively converging the light entering the optical lens, reducing the lens aperture at the rear end 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 disposed at other positions according to actual needs.

[0118] 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 sixth lens and the imaging plane to filter light with different wavelengths to prevent damage to the image-side element (e.g., chip) of the optical lens.

[0119] In an exemplary embodiment, the fourth lens and the fifth lens can form a cemented lens. The use of a cemented lens can fully correct various aberrations of the optical system to improve the resolution, while facilitating a smooth transition of the light beam and making the optical system as a whole compact to meet the requirements of miniaturization.

[0120] In an exemplary embodiment, the first lens to the sixth lens may be a spherical lens or an aspherical lens. The present application does not specifically limit the specific number of spherical lenses and aspherical lenses. When focusing on imaging quality, the number of aspherical lenses can be increased, and even all lenses use aspherical lenses. In particular, in order to improve the resolution quality of the optical system, the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens can all be 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.

[0121] In an exemplary embodiment, the first to sixth lenses may be glass lenses or plastic lenses. The present application does not specifically limit the specific number of glass lenses and plastic lenses. Specifically, when focusing on resolution quality and reliability, the first to sixth lenses may all be glass aspherical lenses. Optical lenses made of glass can suppress the deviation of the back focus of imaging system components with temperature changes to improve system stability. 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. Of course, the first to sixth lenses of the optical lens can also be made of a combination of plastic and glass. Of course, 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.

[0122] According to the above-mentioned embodiment of the present application, the optical lens adopts six lenses with optical power. By optimizing the shape, optical power, thickness and spacing of each lens, the optical lens can be made to have the characteristics of miniaturization, high resolution and small front-end aperture, and has good compatibility and can adapt to a variety of DGP modules. At the same time, the optical lens also has better temperature performance, which is conducive to the optical lens having less imaging effect changes in high and low temperature environments, stable image quality, and being able to use the optical lens in most environments.

[0123] However, those skilled in the art should understand that, without departing from the technical solution claimed in the present application, the number of lenses constituting the lens can be changed to obtain the various results and advantages described in this specification. For example, although 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.

[0124] Specific embodiments of the optical lens applicable to the above-mentioned embodiments are further described below with reference to the accompanying drawings.

[0125] Example 1

[0126] The following reference Figure 1 An optical lens according to Example 1 of the present application is described. Figure 1 A schematic structural diagram of an optical lens according to Example 1 of the present application is shown.

[0127] 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.

[0128] In this embodiment, the optical lens further includes a stop STO, and the stop STO is disposed between the third lens L3 and the fourth lens L4.

[0129] In this embodiment, the fourth lens L4 and the fifth lens L5 form a doublet lens.

[0130] In this embodiment, DMAX is the light clearance diameter corresponding to the first side surface of the first lens L1.

[0131] The first lens L1 has negative power, and its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has positive power, and its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 has positive power, and its first side surface S5 is convex, and its second side surface S6 is concave. The fourth lens L4 has positive power, and its first side surface S8 is convex, and its second side surface S9 is convex. The fifth lens L5 has negative power, and its first side surface S9 is concave, and its second side surface S10 is convex. The sixth lens L6 has positive power, and its first side surface S11 is convex, and its second side surface S12 is a plane.

[0132] The optical lens provided in the present application can be used as, for example, a vehicle-mounted lens. In this case, light from an object passes through each surface S1 to S12 in sequence and is finally imaged on an imaging surface IMA disposed on the second side, wherein an image sensor chip is disposed on the imaging surface IMA.

[0133] 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, light from the image source surface IMA passes through each surface S12 to S1 in sequence and is finally projected onto a projection surface (not shown) disposed on the first side.

[0134] Table 1 shows the radius of curvature R, thickness / distance, refractive index Nd and dispersion coefficient Vd of each lens of the optical lens of Example 1. Wherein, regarding "thickness / distance", it should be understood that the thickness / distance of the row where S1 is located is the center thickness of the first lens L1, the thickness / distance of the row where S2 is located is the air gap between the first lens L1 and the second lens L2, the thickness / distance of the row where S3 is located is the center thickness of the second lens L2, and so on.

[0135] Table 1

[0136]

[0137] In this embodiment, the first side surface S3 and the second side surface S4 of the second lens L2 of the optical lens, and the first side surface S5 and the second side surface S6 of the third lens L3 are aspherical lenses, and the surface shape of each aspherical lens can be defined by but not limited to the following aspherical formula.

[0138] (1).

[0139] in, x The aspheric surface is at a height ofh When the position is , the distance vector height from the vertex of the aspherical surface; c is the paraxial curvature of the aspheric surface, c =1 / R (i.e., the paraxial curvature c is the radius of curvature in Table 1 above R The inverse of ); k is the cone coefficient; Ai Aspheric i -th order correction factor.

[0140] Table 2 shows the conic coefficients that can be used for the aspheric mirror surface in this embodiment ( k ) and higher-order coefficients A4, A6 and A8 .

[0141] Table 2

[0142]

[0143] Figure 2 The MTF (Modulation Transfer Function) curve of Example 1 is shown, which represents the imaging modulation degree of the lens at different spatial frequencies under each field of view, with the horizontal axis representing the spatial frequency and the vertical axis representing the MTF value. It can be seen from the figure that the optical lens of this embodiment has a high resolution capability and can achieve good imaging quality.

[0144] Example 2

[0145] 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.

[0146] Figure 3 The figure is a schematic diagram of the structure of the optical lens according to Example 2 of the present application. Compared with Example 1, the main difference between this embodiment is that the optical parameters such as the curvature radius of each lens surface, the lens thickness, and the spacing distance between lenses are different.

[0147] Table 3 shows the curvature radius R, thickness / distance, refractive index Nd, and dispersion coefficient Vd of each lens of the optical lens of Example 2.

[0148] Table 3

[0149]

[0150] In this embodiment, the first side surface S3 and the second side surface S4 of the second lens L2, and the first side surface S5 and the second side surface S6 of the third lens L3 of the optical lens are aspherical lenses. The surface shape of each aspherical lens can be defined by, but not limited to, the formula (1) given in the above embodiment 1.

[0151] Table 4 shows the conic coefficients that can be used for the aspheric mirror surface in this embodiment ( k ) and higher-order coefficients A4, A6 and A8 .

[0152] Table 4

[0153]

[0154] Figure 4 The MTF curve of the optical lens of this embodiment is shown in FIG. Figure 4 It can be seen that the optical lens of this embodiment has a high resolution capability and can achieve good imaging quality.

[0155] Example 3

[0156] The following reference Figure 5 Describe the optical lens according to Example 3 of the present application.

[0157] Figure 5 The figure is a schematic diagram of the structure of an optical lens according to Example 3 of the present application. Compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface, the lens thickness, and the spacing distance between lenses are different; and the first side surface S1 of the first lens L1 is a plane; DMAX is the light clearance aperture corresponding to the first side surface of the third lens L3.

[0158] Table 5 shows the curvature radius R, thickness / distance, refractive index Nd and dispersion coefficient Vd of each lens of the optical lens of Example 3.

[0159] Table 5

[0160]

[0161] In this embodiment, the first side surface S3 and the second side surface S4 of the second lens L2, and the first side surface S5 and the second side surface S6 of the third lens L3 of the optical lens are aspherical lenses. The surface shape of each aspherical lens can be defined by, but not limited to, the formula (1) given in the above embodiment 1.

[0162] Table 6 shows the conic coefficients that can be used for the aspheric mirror surface in this embodiment ( k ) and higher-order coefficients A4, A6 and A8 .

[0163] Table 6

[0164]

[0165] Figure 6 The MTF curve of the optical lens of this embodiment is shown in FIG. Figure 6 It can be seen that the optical lens of this embodiment has a high resolution capability and can achieve good imaging quality.

[0166] Example 4

[0167] The following reference Figure 7 Describe the optical lens according to Example 4 of the present application.

[0168] Figure 7 The figure is a schematic diagram of the structure of an optical lens according to Example 4 of the present application. Compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface, the lens thickness, and the spacing distance between lenses are different; and the first side surface S1 of the first lens L1 is a plane; DMAX is the light clearance aperture corresponding to the first side surface of the third lens L3.

[0169] Table 7 shows the curvature radius R, thickness / distance, refractive index Nd and dispersion coefficient Vd of each lens of the optical lens of Example 4.

[0170] Table 7

[0171]

[0172] In this embodiment, the first side surface S3 and the second side surface S4 of the second lens L2, and the first side surface S5 and the second side surface S6 of the third lens L3 of the optical lens are aspherical lenses. The surface shape of each aspherical lens can be defined by, but not limited to, the formula (1) given in the above embodiment 1.

[0173] Table 8 shows the conic coefficients that can be used for the aspheric mirror surface in this embodiment ( k ) and higher-order coefficients A4, A6 and A8 .

[0174] Table 8

[0175]

[0176] Figure 8 The MTF curve of the optical lens of this embodiment is shown in FIG. Figure 8 It can be seen that the optical lens of this embodiment has a high resolution capability and can achieve good imaging quality.

[0177] Example 5

[0178] The following reference Fig. 9 Describe the optical lens according to Example 5 of the present application.

[0179] Fig. 9 The figure is a schematic diagram of the structure of the optical lens according to Example 5 of the present application. Compared with Example 1, the main difference between this embodiment is that the optical parameters such as the curvature radius of each lens surface, the lens thickness, and the spacing distance between lenses are different.

[0180] Table 9 shows the curvature radius R, thickness / distance, refractive index Nd and dispersion coefficient Vd of each lens of the optical lens of Example 5.

[0181] Table 9

[0182]

[0183] In this embodiment, the first side surface S3 and the second side surface S4 of the second lens L2, and the first side surface S5 and the second side surface S6 of the third lens L3 of the optical lens are aspherical lenses. The surface shape of each aspherical lens can be defined by, but not limited to, the formula (1) given in the above embodiment 1.

[0184] Table 10 shows the conic coefficients that can be used for the aspherical mirror surface in this embodiment ( k ) and higher-order coefficients A4, A6 and A8 .

[0185] Table 10

[0186]

[0187] Fig.10 The MTF curve of the optical lens of this embodiment is shown in FIG. Fig.10 It can be seen that the optical lens of this embodiment has a high resolution capability and can achieve good imaging quality.

[0188] Example 6

[0189] The following reference Fig.11 Describe the optical lens according to Example 6 of the present application.

[0190] Fig.11 The figure shows a schematic diagram of the structure of an optical lens according to Example 6 of the present application. Compared with Example 1, the main difference between this embodiment is that the optical parameters such as the curvature radius of each lens surface, the lens thickness, and the spacing distance between lenses are different.

[0191] Table 11 shows the curvature radius R, thickness / distance, refractive index Nd and dispersion coefficient Vd of each lens of the optical lens of Example 6.

[0192] Table 11

[0193]

[0194] In this embodiment, the first side surface S3 and the second side surface S4 of the second lens L2, and the first side surface S5 and the second side surface S6 of the third lens L3 of the optical lens are aspherical lenses. The surface shape of each aspherical lens can be defined by, but not limited to, the formula (1) given in the above embodiment 1.

[0195] Table 12 shows the conic coefficients that can be used for the aspherical mirror surface in this embodiment ( k ) and higher-order coefficients A4, A6 and A8 .

[0196] Table 12

[0197]

[0198] Fig.12 The MTF curve of the optical lens of this embodiment is shown in FIG. Fig.12 It can be seen that the optical lens of this embodiment has a high resolution capability and can achieve good imaging quality.

[0199] Example 7

[0200] The following reference Fig.13 Describe the optical lens according to Example 7 of the present application.

[0201] Fig.13 FIG. 7 is a schematic diagram of the structure of an optical lens according to Example 7 of the present application. Compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface, the lens thickness, the spacing distance between lenses, etc. are different; and the fourth lens L4 has negative optical power, and its first side surface S8 is concave, and its second side surface S9 is concave; the fifth lens L5 has positive optical power, and its first side surface S9 is convex.

[0202] Table 13 shows the curvature radius R, thickness / distance, refractive index Nd and dispersion coefficient Vd of each lens of the optical lens of Example 7.

[0203] Table 13

[0204]

[0205] In this embodiment, the first side surface S3 and the second side surface S4 of the second lens L2, and the first side surface S5 and the second side surface S6 of the third lens L3 of the optical lens are aspherical lenses. The surface shape of each aspherical lens can be defined by, but not limited to, the formula (1) given in the above embodiment 1.

[0206] Table 14 shows the conic coefficients that can be used for the aspherical mirror surface in this embodiment (k ) and higher-order coefficients A4, A6 and A8 .

[0207] Table 14

[0208]

[0209] Fig.14 The MTF curve of the optical lens of this embodiment is shown in FIG. Fig.14 It can be seen that the optical lens of this embodiment has a high resolution capability and can achieve good imaging quality.

[0210] Example 8

[0211] The following reference Fig.15 Describe the optical lens according to Example 8 of the present application.

[0212] Fig.15 FIG. 8 is a schematic diagram of the structure of an optical lens according to Example 8 of the present application. Compared with Example 1, the main differences between this embodiment and Example 1 are that: the optical parameters such as the curvature radius of each lens surface, the lens thickness, and the spacing distance between lenses are different; and the fourth lens L4 has negative optical power, and its first side surface S8 is concave, and its second side surface S9 is concave; the fifth lens L5 has positive optical power, and its first side surface S9 is convex.

[0213] Table 15 shows the curvature radius R, thickness / distance, refractive index Nd and dispersion coefficient Vd of each lens of the optical lens of Example 8.

[0214] Table 15

[0215]

[0216] In this embodiment, the first side surface S3 and the second side surface S4 of the second lens L2, and the first side surface S5 and the second side surface S6 of the third lens L3 of the optical lens are aspherical lenses. The surface shape of each aspherical lens can be defined by, but not limited to, the formula (1) given in the above embodiment 1.

[0217] Table 16 shows the conic coefficients that can be used for the aspherical mirror surface in this embodiment ( k ) and higher-order coefficients A4, A6 and A8 .

[0218] Table 16

[0219]

[0220] Fig.16 The MTF curve of the optical lens of this embodiment is shown in FIG. Fig.16It can be seen that the optical lens of this embodiment has a high resolution capability and can achieve good imaging quality.

[0221] Example 9

[0222] The following reference Fig.17 Describe the optical lens according to Example 9 of the present application.

[0223] Fig.17 FIG. 9 is a schematic diagram of the structure of an optical lens according to Example 9 of the present application. Compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface, the lens thickness, and the spacing distance between lenses are different; and the fourth lens L4 has negative optical power, and its second side surface S9 is concave; the fifth lens L5 has positive optical power, and its first side surface S9 is convex.

[0224] like Fig. 9 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, an aperture STO, 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. The fourth lens L4 and the fifth lens L5 form a doublet lens.

[0225] The first lens L1 has negative power, and its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has positive power, and its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 has positive power, and its first side surface S5 is convex, and its second side surface S6 is concave. The fourth lens L4 has negative power, and its first side surface S8 is convex, and its second side surface S9 is concave. The fifth lens L5 has positive power, and its first side surface S9 is convex, and its second side surface S10 is convex. The sixth lens L6 has positive power, and its first side surface S11 is convex, and its second side surface S12 is a plane.

[0226] Table 17 shows the curvature radius R, thickness / distance, refractive index Nd and dispersion coefficient Vd of each lens of the optical lens of Example 9.

[0227] Table 17

[0228]

[0229] In this embodiment, the first side surface S3 and the second side surface S4 of the second lens L2, and the first side surface S5 and the second side surface S6 of the third lens L3 of the optical lens are aspherical lenses. The surface shape of each aspherical lens can be defined by, but not limited to, the formula (1) given in the above embodiment 1.

[0230] Table 18 shows the conic coefficients that can be used for the aspheric mirror surface in this embodiment ( k ) and higher-order coefficients A4, A6 and A8 .

[0231] Table 18

[0232]

[0233] Fig.18 The MTF curve of the optical lens of this embodiment is shown in FIG. Fig.18 It can be seen that the optical lens of this embodiment has a high resolution capability and can achieve good imaging quality.

[0234] Example 10

[0235] The following reference Fig.19 An optical lens according to Example 10 of the present application is described.

[0236] Fig.19 FIG. 1 is a schematic diagram of the structure of an optical lens according to Example 10 of the present application. Compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface, the lens thickness, and the spacing distance between lenses are different; and the fourth lens L4 has negative optical power, and its second side surface S9 is concave; the fifth lens L5 has positive optical power, and its first side surface S9 is convex.

[0237] Table 19 shows the curvature radius R, thickness / distance, refractive index Nd and dispersion coefficient Vd of each lens of the optical lens of Example 10.

[0238] Table 19

[0239]

[0240] In this embodiment, the first side surface S3 and the second side surface S4 of the second lens L2, and the first side surface S5 and the second side surface S6 of the third lens L3 of the optical lens are aspherical lenses. The surface shape of each aspherical lens can be defined by, but not limited to, the formula (1) given in the above embodiment 1.

[0241] Table 20 shows the conic coefficients that can be used for the aspherical mirror surface in this embodiment ( k ) and higher-order coefficients A4, A6 and A8 .

[0242] Table 20

[0243]

[0244] Fig. 20 The MTF curve of the optical lens of this embodiment is shown in FIG. Fig. 20It can be seen that the optical lens of this embodiment has a high resolution capability and can achieve good imaging quality.

[0245] Embodiment 11

[0246] The following reference Fig.21 Describe the optical lens according to Example 11 of the present application.

[0247] Fig.21 The figure is a schematic diagram of the structure of an optical lens according to Example 11 of the present application. Compared with Example 1, the main differences between this embodiment and Example 1 are: the optical parameters such as the curvature radius of each lens surface, the lens thickness, and the spacing distance between lenses are different; DMAX is the light clearance aperture corresponding to the first side surface of the sixth lens L6.

[0248] Table 21 shows the curvature radius R, thickness / distance, refractive index Nd and dispersion coefficient Vd of each lens of the optical lens of Example 11.

[0249] Table 21

[0250]

[0251] Fig. 22 The MTF curve of the optical lens of this embodiment is shown in FIG. Fig. 22 It can be seen that the optical lens of this embodiment has a high resolution capability and can achieve good imaging quality.

[0252] Example 12

[0253] The following reference Fig.23 Describe the optical lens according to Example 12 of the present application.

[0254] Fig.23 The figure is a schematic diagram of the structure of an optical lens according to Example 12 of the present application. Compared with Example 1, the main differences between this embodiment and Example 1 are: the optical parameters such as the curvature radius of each lens surface, the lens thickness, and the spacing distance between lenses are different; DMAX is the light-clearance diameter corresponding to the first side surface of the sixth lens L6.

[0255] Table 22 shows the curvature radius R, thickness / distance, refractive index Nd and dispersion coefficient Vd of each lens of the optical lens of Example 12.

[0256] Table 22

[0257]

[0258] Fig.24 The MTF curve of the optical lens of this embodiment is shown in FIG. Fig.24It can be seen that the optical lens of this embodiment has a high resolution capability and can achieve good imaging quality.

[0259] Example 13

[0260] The following reference Fig.25 Describe the optical lens according to Example 5 of the present application.

[0261] Fig.25 FIG. 1 is a schematic diagram of the structure of an optical lens according to Example 13 of the present application. Compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface, the lens thickness, and the spacing distance between lenses are different; the first side surface S8 of the fourth lens L4 is a concave surface, and the second side surface S12 of the sixth lens L6 is a concave surface; and DMAX is the clear aperture corresponding to the first side surface of the third lens L3.

[0262] Table 23 shows the curvature radius R, thickness / distance, refractive index Nd and dispersion coefficient Vd of each lens of the optical lens of Example 13.

[0263] Table 23

[0264]

[0265] In this embodiment, the first side surface S3 and the second side surface S4 of the second lens L2, and the first side surface S5 and the second side surface S6 of the third lens L3 of the optical lens are aspherical lenses. The surface shape of each aspherical lens can be defined by, but not limited to, the formula (1) given in the above embodiment 1.

[0266] Table 24 shows the conic coefficients that can be used for the aspherical mirror surface in this embodiment ( k ) and higher-order coefficients A4, A6 and A8 .

[0267] Table 24

[0268]

[0269] Fig.26 The MTF curve of the optical lens of this embodiment is shown in FIG. Fig.26 It can be seen that the optical lens of this embodiment has a high resolution capability and can achieve good imaging quality.

[0270] Embodiment 14

[0271] The following reference Fig. 27 Describe the optical lens according to Example 14 of the present application.

[0272] Fig. 27FIG. 1 is a schematic diagram of the structure of an optical lens according to Example 14 of the present application. Compared with Example 1, this embodiment mainly differs in that: optical parameters such as the curvature radius of each lens surface, the lens thickness, and the spacing distance between lenses are different; the first side surface S8 of the fourth lens L4 is a concave surface, and the second side surface S12 of the sixth lens L6 is a concave surface; and DMAX is the clear aperture corresponding to the first side surface of the third lens L3.

[0273] Table 25 shows the curvature radius R, thickness / distance, refractive index Nd and dispersion coefficient Vd of each lens of the optical lens of Example 14.

[0274] Table 25

[0275]

[0276] In this embodiment, the first side surface S3 and the second side surface S4 of the second lens L2, and the first side surface S5 and the second side surface S6 of the third lens L3 of the optical lens are aspherical lenses. The surface shape of each aspherical lens can be defined by, but not limited to, the formula (1) given in the above embodiment 1.

[0277] Table 26 shows the conic coefficients that can be used for the aspherical mirror surface in this embodiment ( k ) and higher-order coefficients A4, A6 and A8 .

[0278] Table 26

[0279]

[0280] Fig.28 The MTF curve of the optical lens of this embodiment is shown in FIG. Fig.28 It can be seen that the optical lens of this embodiment has a high resolution capability and can achieve good imaging quality.

[0281] Tables 27 and 28 below show some parameters of the optical lenses of Examples 1 to 14, such as the focal length value F of the entire group and the focal length value of each lens, the total optical length TTL, the back focal length BFL, the image height H corresponding to the maximum field angle, etc. The unit of each focal length value, distance or effective radius value is millimeter (mm).

[0282] Table 27

[0283]

[0284] Table 28

[0285]

[0286] In summary, the optical lenses of Examples 1 to 14 respectively satisfy the conditional expressions shown in Tables 29 and 30 below.

[0287] Table 29

[0288]

[0289] Table 30

[0290]

[0291] 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 detection distance device.

[0292] In addition, the electronic device may be an independent imaging device such as a vehicle-mounted camera, or an imaging module integrated in a driving assistance system.

[0293] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with the technical features with similar functions disclosed in this application (but not limited to) by each other to form a technical solution.

Claims

1. An optical lens, characterized in that: The optical lens includes, in sequence from the first side to the second side along the optical axis: A first lens having negative optical power, wherein the second side surface thereof is a concave surface; a second lens having positive power, wherein the first side surface is concave and the second side surface is convex; a third lens having positive power, wherein the first side surface is convex and the second side surface is concave; a fourth lens having optical power; a fifth lens element having optical power, wherein the second side surface of the fifth lens element is convex; and a sixth lens having positive power, wherein the first side surface of the sixth lens is convex; Wherein, the number of lenses having optical power in the optical lens is six; The fourth lens has opposite refractive power to the fifth lens; The optical lens meets the following requirements: -1.8≤F1 / F≤-0.9; 0.04≤(d2+d4) / TTL≤0.16; 0.3≤d6 / F≤1.2; 1.8≤F6 / F≤4, Wherein, F1 is the focal length of the first lens, F is the focal length of the entire optical lens group, d2 is the air interval between the first lens and the second lens on the optical axis, d4 is the air interval between the second lens and the third lens on the optical axis, TTL is the total optical length of the optical lens, d6 is the air interval between the third lens and the fourth lens on the optical axis, and F6 is the focal length of the sixth lens; The combined focal length value F45 of the fourth lens and the fifth lens and the entire focal length value F of the optical lens group satisfy: 1.2≤F45 / F≤1.9; The first side is the object side, and the second side is the image side; or the first side is the imaging side, and the second side is the image source side.

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

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

4. 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.

5. The optical lens according to claim 1, characterized in that: The fifth lens has positive refractive power, and the first side surface of the fifth lens is a convex surface.

6. The optical lens according to claim 1, characterized in that: The fifth lens has negative optical power, and a first side surface thereof is a concave surface.

7. The optical lens according to claim 1, characterized in that: The second side surface of the sixth lens is a plane or a concave surface.

8. The optical lens according to any one of claims 1 to 7, characterized in that: The total optical length TTL of the optical lens and the back focal length BFL of the optical lens satisfy: 14≤TTL / BFL≤19.

5.

9. The optical lens according to any one of claims 1 to 7, characterized in that: A focal length value F2 of the second lens and a focal length value F3 of the third lens satisfy: 0.2≤F2 / F3≤2.

6.

10. The optical lens according to any one of claims 1 to 7, characterized in that: An air interval d6 between the third lens and the fourth lens on the optical axis and a total optical length TTL of the optical lens satisfy the following: 0.1≤d6 / TTL≤0.

3.

11. The optical lens according to any one of claims 1 to 7, characterized in that: The focal length value F2 of the second lens and the focal length value F of the entire optical lens group satisfy: 1≤F2 / F≤13.

5.

12. The optical lens according to any one of claims 1 to 7, characterized in that: The focal length value F3 of the third lens and the focal length value F of the entire optical lens group satisfy: 0.5≤F3 / F≤15.

13. The optical lens according to any one of claims 1 to 7, characterized in that: A curvature radius R1 of the first side surface of the first lens and a focal length F1 of the first lens satisfy: R1 / F1≤-1.

14. The optical lens according to any one of claims 1 to 7, characterized in that: The maximum effective aperture D11 of the first side surface of the sixth lens corresponding to the maximum field angle of the optical lens, the back focal length BFL of the optical lens, and the image height H corresponding to the maximum field angle of the optical lens satisfy: 1.8mm≤D11 BFL / H≤4.3mm.

15. The optical lens according to any one of claims 1 to 7, characterized in that: The focal length value F of the entire optical lens, the radius of curvature R3 of the first side surface of the second lens, and the radius of curvature R4 of the second side surface of the second lens satisfy: 0.3≤|F / R3|+|F / R4|≤2.

16. The optical lens according to any one of claims 1 to 7, characterized in that: A curvature radius R5 of a first side surface of the third lens, a curvature radius R6 of a second side surface of the third lens, and a center thickness d5 of the third lens satisfy: 0.55≤R5 / (R6+d5)≤0.

75.

17. The optical lens according to any one of claims 1 to 7, characterized in that: The radius of curvature R11 of the first side surface of the sixth lens and the focal length F of the entire optical lens group satisfy: 0.4≤R11 / F≤1.

7.

18. The optical lens according to any one of claims 1 to 7, characterized in that: An air interval d10 between the fifth lens and the sixth lens on the optical axis and a total optical length TTL of the optical lens satisfy the following: 0.25≤d10 / TTL≤0.

45.

19. The optical lens according to any one of claims 1 to 7, characterized in that: A focal length F3 of the third lens and a curvature radius R5 of the first side surface of the third lens satisfy: 1≤F3 / R5≤23.

20. The optical lens according to any one of claims 1 to 7, characterized in that: The optical lens meets at least one of the following conditions: 0.7≤|R5 / R6|≤1.3; 0.1≤|SAG3 / SAG4|≤1; 1.15≤D11 / H≤1.65; 9≤TTL / DMAX≤12; 0.1≤|(|R2|-|R3|) / (|R2|+|R3|)|≤1.1; 0.7≤|R3 / R4|≤2.3; 4.8≤TTL / F≤5.3; -4≤R4 / R5≤-0.5; -1E+07≤(F2+F3) / (dn(2) / dt(2)+dn(3) / dt(3))≤-2E+05; 5≤arctan(SAG10 / D10)≤20, Wherein, R5 is the radius of curvature of the first side surface of the third lens, R6 is the radius of curvature of the second side surface of the third lens, SAG3 is the sag of the first side surface of the second lens, SAG4 is the sag of the second side surface of the second lens, D11 is the maximum effective aperture of the first side surface of the sixth lens corresponding to the maximum field of view of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, TTL is the total optical length of the optical lens, F is the focal length of the entire group of the optical lens, and DMAX is the maximum light transmission corresponding to the maximum field of view of the optical lens. aperture, R2 is the radius of curvature of the second side surface of the first lens, R3 is the radius of curvature of the first side surface of the second lens, R4 is the radius of curvature of the second side surface of the second lens, F2 is the focal length of the second lens, F3 is the focal length of the third lens, dn(2) / dt(2) is the temperature coefficient of the second lens, dn(3) / dt(3) is the temperature coefficient of the third lens, SAG10 is the sag of the second side surface of the fifth lens, and D10 is the maximum effective aperture of the second side surface of the fifth lens corresponding to the maximum field of view of the optical lens.

21. The optical lens according to any one of claims 1 to 7, characterized in that: The optical lens meets at least one of the following conditions: 15.4885≤TTL / BFL≤18.4008; 1.0913≤|R3 / R4|≤2.0358; 4.9478≤TTL / F≤5.2112; 0.4390≤F2 / F3≤1.9005; 0.8348≤|R5 / R6|≤1.2060; 0.1188≤d6 / TTL≤0. 1961;0.3229≤d10 / TTL≤0.4267;3.5187≤F2 / F≤11.1846;4.0033≤F3 / F≤9.9176;1.363 5≤F45 / F≤1.7251; 2.1942≤F6 / F≤3.5932; 0.2647≤|SAG3 / SAG4|≤0.7530; 2.4311mm≤D11 BFL / H≤3.7185mm; 1.2071≤D11 / H≤1.4874; 10.1589≤TTL / DMAX≤11.7517; 0.1929≤|(|R2|-|R 3|) / (|R2|+|R3|)|≤0.7613; 0.7001≤|F / R3|+|F / R4|≤1.7175; 0.6089≤R5 / (R6+d5)≤0.7128; -9.567E+06≤(F2+F3) / (dn(2) / dt(2)+dn(3) / dt(3))≤-2.873E+05; 7.9355≤arctan(SAG10 / D10)≤16.6189; 0.0606≤(d2+d4) / TTL≤0.1492; 0 .6087≤R11 / F≤1.3985; -3.3382≤R4 / R5≤-1.1991; 0.6166≤d6 / F≤1.014 7; R1 / F1≤-1.5305; 5.5679≤F3 / R5≤18.9972; -1.5436≤F1 / F≤-1.0150, Wherein, TTL is the total optical length of the optical lens, BFL is the back focal length of the optical lens, R1 is the curvature radius of the first side surface of the first lens, R2 is the curvature radius of the second side surface of the first lens, R3 is the curvature radius of the first side surface of the second lens, R4 is the curvature radius of the second side surface of the second lens, R5 is the curvature radius of the first side surface of the third lens, R6 is the curvature radius of the second side surface of the third lens, R11 is the curvature radius of the first side surface of the sixth lens, F1 is the focal length value of the first lens, F2 is the focal length value of the second lens, F3 is the focal length value of the third lens, F45 is the combined focal length value of the fourth lens and the fifth lens, F6 is the focal length value of the sixth lens, F is the focal length value of the entire group of the optical lens, d2 is the air spacing between the first lens and the second lens on the optical axis, d4 is the air spacing between the second lens and the The air spacing of the third lens on the optical axis, d6 is the air spacing between the third lens and the fourth lens on the optical axis, d10 is the air spacing between the fifth lens and the sixth lens on the optical axis, H is the image height corresponding to the maximum field angle of the optical lens, SAG3 is the sagittal height of the first side surface of the second lens, SAG4 is the sagittal height of the second side surface of the second lens, SAG10 is the sagittal height of the second side surface of the fifth lens, D10 is the maximum effective aperture of the second side surface of the fifth lens corresponding to the maximum field angle of the optical lens, D11 is the maximum effective aperture of the first side surface of the sixth lens corresponding to the maximum field angle of the optical lens, DMAX is the maximum clear aperture corresponding to the maximum field angle of the optical lens, dn(2) / dt(2) is the temperature coefficient of the second lens, and dn(3) / dt(3) is the temperature coefficient of the third lens.

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

Images