Optical lens and electronic equipment

Abstract

The invention discloses an optical lens and electronic equipment. The optical lens sequentially comprises seven lenses with focal power from a first side to a second side along an optical axis: a first lens with negative focal power, the first side surface of which is a concave surface, and the second side surface of which is a concave surface; the first side surface of the second lens is a concave surface, and the second side surface of the second lens is a convex surface; the third lens has positive focal power, and the second side surface of the third lens is a convex surface; the first side surface of the fourth lens is a convex surface, and the second side surface of the fourth lens is a convex surface; the first side surface of the fifth lens is a convex surface; the sixth lens has focal power; the seventh lens has positive or negative focal power; wherein the number of lenses with focal power in the optical lens is seven, and the optical lens meets the following conditions: 4 < = # imgabs0 # 1 / # imgabs1 # 2 < = 100, 0.1 < = # imgabs2 # 1 + # imgabs3 # 2 + # imgabs4 # 3 / # imgabs5 # < = 0.55, and 6.5 < = F2 / F < = 125.

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] Thanks to the rapid development of automotive assisted driving systems in recent years, lenses have been widely used in cars. Car lenses are key components for automatic driving assistance systems to obtain external information, including car reversing visual systems, driving recorders, automatic parking and panoramic parking systems, road finding systems, etc.

[0003] At present, the market has higher and higher requirements for the performance of the lens used in vehicles, especially the side-view optical lens. However, the optical lens in the related art cannot achieve high resolution and low sensitivity at the same time. Summary of the invention

[0004] One aspect of the present application provides an optical lens, which includes, in order from the first side to the second side along the optical axis: a first lens with negative optical power, whose first side surface is concave and the second side surface is concave; a second lens with positive or negative optical power, whose first side surface is concave and the second side surface is convex; a third lens with positive optical power, whose second side surface is convex; a fourth lens with positive optical power, whose first side surface is convex and the second side surface is convex; a fifth lens with optical power, whose first side surface is convex; a sixth lens with optical power; and a seventh lens with positive or negative optical power; wherein the number of lenses with optical power in the optical lens is seven, and the optical lens satisfies: 4≤| 1 / 2|≤100, 0.1≤| 1+ 2+ 3| / ≤0.55, 6.5≤|F2 / F|≤125, where F is the total effective focal length of the optical lens, F2 is the effective focal length of the second lens, 1 is the focal length of the first lens, 2 is the focal length of the second lens, 3 is the focal length of the third lens, is the total focal length of the optical lens. The first lens has a negative focal length and has a divergent effect on light. Its first side is concave, which can quickly diffuse light and reduce the incident angle of light of the rear lens, which is conducive to achieving the telephoto and high resolution of the optical lens, and can reduce sensitivity and achieve a smaller total optical length. The first side of the second lens is concave, which can smoothly receive and further diverge light; the second side is convex, which is conducive to properly converging light and reducing the total optical length. Further, the optical lens satisfies 4≤| 1 / 2|≤100, 0.1≤| 1+ 2+ 3| / ≤0.55 and 6.5≤|F2 / F|≤125 can further control the front optical system of the optical lens. Even if the first lens can collect large-angle light and pass it to the second lens, at this time, since the focal length of the second lens is relatively small, the light can be smoothly transferred to the third lens, and the first lens has a stronger ability to adjust the light than the second lens. 1 / When the value of 2| is greater than 4, the optical lens has a better light regulation effect; when the ratio of the focal length to the total focal length of the front lens group of the optical system (composed of the first lens, the second lens, and the third lens) is between 0.1 and 0.55, a better light regulation capability can be achieved: on the one hand, more light can be collected to enter the optical system, and on the other hand, after the light is emitted from the third lens, the fourth lens can collect more light, thereby improving the overall imaging quality of the optical system; making the effective focal length of the second lens larger helps to smooth the light trend, thereby making the optical system highly stable and reducing the sensitivity of the optical system. In summary, the optical lens provided by the embodiments of the present application can meet the requirements of high resolution and / or low sensitivity.

[0005] In one embodiment, the fifth lens has positive or negative power.

[0006] In one embodiment, the sixth lens has positive or negative optical power.

[0007] In one embodiment, the first side surface of the third lens is convex or concave; the second side surface of the fifth lens is convex or concave; the first side surface of the sixth lens is convex or concave, and the second side surface is convex, or the first side surface is concave and the second side surface is concave; and the first side surface of the seventh lens is convex, and the second side surface is convex or concave, or the first side surface is concave and the second side surface is concave.

[0008] In one embodiment, the optical lens satisfies: 2≤F56 / F≤30, wherein F56 is the combined focal length of the fifth lens and the sixth lens, and F is the total effective focal length of the optical lens.

[0009] In one embodiment, the optical lens satisfies: 0.001≤d45 / TTL≤0.12, wherein TTL is the total optical length of the optical lens, and d45 is the spacing distance between the fourth lens and the fifth lens along the optical axis.

[0010] In one embodiment, the optical lens satisfies: 55°≤(FOV×F) / H≤85°, wherein F is the total effective focal length of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, and FOV is the maximum field of view of the optical lens.

[0011] In one embodiment, the optical lens satisfies: 0<D / H / FOV×1°≤0.03, wherein D is the maximum light clearance aperture of the first side surface of the first lens corresponding to the maximum field of view of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, and FOV is the maximum field of view of the optical lens.

[0012] In one embodiment, the optical lens satisfies at least one of the following: 0.3 rad -1 ≤D / (H θ)≤0.8rad -1 , 4≤TTL / F≤6, where F is the total effective focal length of the optical lens, TTL is the total optical length of the optical lens, D is the maximum aperture of the first side of the first lens corresponding to the maximum field of view of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, and θ is the radian value corresponding to the maximum field of view of the optical lens.

[0013] In one embodiment, the optical lens satisfies: BFL / TTL≤0.12, wherein TTL is the total optical length of the optical lens, and BFL is the optical back focus of the optical lens.

[0014] In one embodiment, the optical lens satisfies at least one of the following: -40≤R1 / (R2+d1)≤-1, 0.3≤F3 / F4≤5, wherein R1 is the radius of curvature of the first side surface of the first lens, R2 is the radius of curvature of the second side surface of the first lens, d1 is the center thickness of the first lens, F3 is the effective focal length of the third lens, and F4 is the effective focal length of the fourth lens.

[0015] In one embodiment, the optical lens satisfies: |F7 / F|≥3, wherein F is the total effective focal length of the optical lens, and F7 is the effective focal length of the seventh lens.

[0016] In one embodiment, the optical lens satisfies: -1≤F4 / F7≤0.1, wherein F4 is the effective focal length of the fourth lens, and F7 is the effective focal length of the seventh lens.

[0017] In one embodiment, the optical lens satisfies: (|F7|-|F4|) / d47≥1, wherein F4 is the effective focal length of the fourth lens, F7 is the effective focal length of the seventh lens, and d47 is the spacing distance between the fourth lens and the seventh lens along the optical axis.

[0018] In one embodiment, the optical lens satisfies: -50≤R1 / F<0, wherein R1 is the radius of curvature of the first side surface of the first lens, and F is the total effective focal length of the optical lens.

[0019] In one embodiment, the optical lens satisfies: -25≤R8 / F≤-2, wherein R8 is the radius of curvature of the second side surface of the fourth lens, and F is the total effective focal length of the optical lens.

[0020] In one embodiment, the optical lens satisfies: d67 / TTL≥0.07, wherein d67 is the spacing distance between the sixth lens and the seventh lens along the optical axis, and TTL is the total optical length of the optical lens.

[0021] In one embodiment, the optical lens satisfies: -1.5≤R2 / R3≤-0.3, 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.

[0022] In one embodiment, the optical lens satisfies: -1≤R4 / R5≤0.9, wherein R4 is the radius of curvature of the second side surface of the second lens, and R5 is the radius of curvature of the first side surface of the third lens.

[0023] In one embodiment, the optical lens satisfies: -5≤R8 / R9≤-1, wherein R8 is the radius of curvature of the second side surface of the fourth lens, and R9 is the radius of curvature of the first side surface of the fifth lens.

[0024] In one embodiment, the optical lens satisfies: (d67 BFL) / (d67+BFL)≤2, wherein d67 is the distance between the sixth lens and the seventh lens along the optical axis, and BFL is the optical back focus of the optical lens.

[0025] In one embodiment, the optical lens satisfies: 0.1≤(d5+d6) / TTL≤0.3, wherein d6 is the center thickness of the sixth lens, d5 is the center thickness of the fifth lens, and TTL is the total optical length of the optical lens.

[0026] In one embodiment, the optical lens satisfies at least one of the following: -40≤R1 / F≤-1, 0.01≤d45 / TTL≤0.1, -0.8≤R4 / R5≤0.7, 0.08≤d67 / TTL≤0.18, 2.5≤F56 / F≤25, 3.5≤|F7 / F|≤600, 0.03≤BFL / TTL≤0.11, 4.2≤TTL / F≤5.8, 0.5≤F3 / F4≤2.5, -1≤R2 / R3≤-0.4, -0.7≤F4 / F7≤0.1, 1≤(|F7|-|F4|) / d47≤500, 0.5≤(d67 BFL) / (d67+BFL)≤2, 0.13≤(d5+d6) / TTL≤0.25, 58°≤(FOV×F) / H≤83°, -3.5≤R8 / R9≤-1.2, -20≤R8 / F≤-2, 0.45rad -1 ≤D / (H θ)≤0.7rad -1 , 7≤|F2 / F|≤120, 4.5≤| 1 / 2|≤80,0.25≤| 1+ 2+ 3| / ≤0.52, -35≤R1 / (R2+d1)≤-1.5, where: 1 is the focal length of the first lens, 2 is the focal length of the second lens, 3 is the focal length of the third lens, is the total focal power of the optical lens, R1 is the radius of curvature of the first side of the first lens, R2 is the radius of curvature of the second side of the first lens, R3 is the radius of curvature of the first side of the second lens, R4 is the radius of curvature of the second side of the second lens, R5 is the radius of curvature of the first side of the third lens, R8 is the radius of curvature of the second side of the fourth lens, R9 is the radius of curvature of the first side of the fifth lens, d1 is the center thickness of the first lens, d6 is the center thickness of the sixth lens, d5 is the center thickness of the fifth lens, F56 is the combined focal length of the fifth lens and the sixth lens, F is the total effective focal length of the optical lens, F2 is the effective focal length of the second lens, F3 is the effective focal length of the third lens The effective focal length of the lens, F4 is the effective focal length of the fourth lens, F7 is the effective focal length of the seventh lens, TTL is the total optical length of the optical lens, d45 is the distance between the fourth lens and the fifth lens along the optical axis, d47 is the distance between the fourth lens and the seventh lens along the optical axis, d67 is the distance between the sixth lens and the seventh lens along the optical axis, H is the image height corresponding to the maximum field of view of the optical lens, FOV is the maximum field of view of the optical lens, D is the maximum light clearance aperture of the first side surface of the first lens corresponding to the maximum field of view of the optical lens, TTL is the total optical length of the optical lens, θ is the radian value corresponding to the maximum field of view of the optical lens, and BFL is the optical back focus of the optical lens.

[0027] In one embodiment, the optical lens satisfies at least one of the following: 3.7509≤F56 / F≤23.5734, 4.7817≤|F7 / F|≤585.9319, 0.0164≤d45 / TTL≤0.0830, 0.0426≤BFL / TTL≤0.1003, 0.0983≤d67 / TTL≤0.1522, -33.8596≤R1 / F≤-2.4233, 61.2212°≤(FOV×F) / H≤78.9206°, 0.5007rad -1 ≤D / (H θ)≤0.6653rad -1 , 0.0087≤D / H / FOV×1°≤0.0116, -0.6709≤R4 / R5≤0.5993, 4.5761≤TTL / F≤5.4870, -3.1222≤R8 / R9≤-1.4532, 0.7522≤F3 / F4≤2.1115 , -0.9712≤R2 / R3≤-0.5599, -0.4444≤F4 / F7≤0.0537, 1.3716≤(|F7|-|F4|) / d47≤450.6691, -16.0286≤R8 / F≤-3.0987, 0.9138≤(d67 BFL) / (d67+BFL)≤1.5611, 0.1482≤(d5+d6) / TTL≤0.2233, 7.1658≤|F2 / F|≤118.6000, 4.8674≤| 1 / 2|≤76.4832,0.2977≤| 1+ 2+ 3| / ≤0.4984, -33.2571≤R1 / (R2+d1)≤-1.8790, where: 1 is the focal length of the first lens, 2 is the focal length of the second lens, 3 is the focal length of the third lens, is the total focal power of the optical lens, R1 is the radius of curvature of the first side of the first lens, R2 is the radius of curvature of the second side of the first lens, R3 is the radius of curvature of the first side of the second lens, R4 is the radius of curvature of the second side of the second lens, R5 is the radius of curvature of the first side of the third lens, R8 is the radius of curvature of the second side of the fourth lens, R9 is the radius of curvature of the first side of the fifth lens, d1 is the center thickness of the first lens, d6 is the center thickness of the sixth lens, d5 is the center thickness of the fifth lens, F56 is the combined focal length of the fifth lens and the sixth lens, F is the total effective focal length of the optical lens, F2 is the effective focal length of the second lens, F3 is the effective focal length of the third lens The effective focal length of the lens, F4 is the effective focal length of the fourth lens, F7 is the effective focal length of the seventh lens, TTL is the total optical length of the optical lens, d45 is the distance between the fourth lens and the fifth lens along the optical axis, d47 is the distance between the fourth lens and the seventh lens along the optical axis, d67 is the distance between the sixth lens and the seventh lens along the optical axis, H is the image height corresponding to the maximum field of view of the optical lens, FOV is the maximum field of view of the optical lens, D is the maximum light clearance aperture of the first side surface of the first lens corresponding to the maximum field of view of the optical lens, TTL is the total optical length of the optical lens, θ is the radian value corresponding to the maximum field of view of the optical lens, and BFL is the optical back focus of the optical lens.

[0028] Another aspect of the present application provides an electronic device, comprising the optical lens of any of the above-mentioned embodiments, and the electronic device also includes at least one of an imaging element and a light source; wherein the imaging element is used to convert the optical image formed by the optical lens into an electrical signal, and the light emitted by the light source is projected onto a target area after passing through the optical lens to form an image or illuminate the area. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Other features, purposes and advantages of the present application will become more apparent through the following detailed description of the embodiments in conjunction with the accompanying drawings. In the accompanying drawings: Figure 1 , Figure 3 , Figure 5 , Figure 7 , Fig. 9 , Fig.11 , Fig.13 , Fig.15 , Fig.17 , Fig.19 , Fig.21 , Fig.23 , Fig.25 , Fig. 27 , Fig.29 , Fig.31 Schematic diagrams of the structures of optical lenses according to Embodiments 1 to 16 of the present application are respectively shown; and Figure 2 , Figure 4 , Figure 6 , Figure 8 , Fig.10 , Fig.12 , Fig.14 , Fig.16 , Fig.18 , Fig. 20 , Fig. 22 , Fig.24 , Fig.26 , Fig.28 , Fig.30 , Fig.32 The axial chromatic aberration diagrams of the optical lenses according to Examples 1 to 16 of the present application are respectively shown. DETAILED DESCRIPTION

[0030] 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.

[0031] 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.

[0032] 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.

[0033] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the convex position 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 concave position is not defined, it means that the lens surface is concave at least in the paraxial region. The judgment of the surface type in the paraxial region can be judged according to the general method in the art, for example, the positive and negative R value (R refers to the radius of curvature of the paraxial region) is used to judge the concave and convex. Exemplarily, when the optical lens provided by the present application is used for photography, the surface of each lens closest to the subject is called the object side of the lens, and the surface of each lens closest to the imaging side is called the image side of the lens. In terms of the object side, when the R value is positive, it is judged as a convex surface, and when the R value is negative, it is judged as a concave surface; in terms of the image side, when the R value is positive, it is judged as a concave surface, and when the R value is negative, it is judged as a convex surface.

[0034] It should be understood that the optical lens provided in this application can be used for both video and projection, and can also be used for laser radar lenses. When the optical lens provided in this application is used for a camera lens or a laser radar receiving end 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. The light from the object side can be imaged on the image side, for example, wherein the camera lens can be, for example, a vehicle-mounted camera, an infrared camera, a drone camera, a night vision camera, a security monitoring camera, etc.; when the optical lens provided in this application is used for a projection lens or a radar transmitting end lens, the "first side" referred to in this article may refer to the object side, and the "second side" may refer to the light source side. The second side of the optical lens may be provided with a light source, and the light source may provide light with or without image information. The light from the light source side passes through the optical lens and is projected to the first side, for example, an image can be formed on the first side or an illuminated area can be illuminated.

[0035] 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.

[0036] 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.

[0037] 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.

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

[0039] In an exemplary embodiment, the optical lens includes, for example, seven lenses having optical power, namely, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens, which are arranged in sequence from the first side to the second side along the optical axis.

[0040] In an exemplary embodiment, the optical lens provided by the present application can be used as, for example, a vehicle-mounted lens or a laser radar receiving end lens. In this 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 can be provided with an imaging surface of the optical lens.

[0041] In an exemplary embodiment, the optical lens provided in the present application can be used as, for example, a projection lens or a laser radar transmitting end lens, in which case the first side of the optical lens can be the object side, and the second side can be the light source side. Light from the light source side passes through the optical lens and is projected to the object side, and forms an image or illuminates an area on the object side, and the second side of the optical lens can be provided with a light source surface of the optical lens.

[0042] 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).

[0043] In an exemplary embodiment, an aperture for limiting the light beam may be provided between the third lens and the fourth lens to further improve the imaging quality of the optical lens. The aperture is conducive to converging the light entering the optical system, balancing the aperture size of the lenses in the front and rear optical systems, and can achieve a small FNO of the optical lens while smoothing the light trend. However, it should be noted that the position of the aperture disclosed herein is only an example and not a limitation; in alternative embodiments, the aperture may also be set at other positions according to actual needs.

[0044] In an exemplary embodiment, the fifth lens and the sixth lens can be glued to form a glued piece to better correct chromatic aberration and thus improve resolution, and the tolerance sensitivity of the fifth lens and the sixth lens after gluing can be reduced. In addition, gluing the sixth lens of the fifth lens can also smoothly transition the light passing through the front optical system (e.g., the first lens to the fourth lens) to the rear optical system, thereby reducing the total optical length of the optical lens. And various aberrations of the optical system can be fully corrected. It can also improve resolution, optimize distortion, CRA and other optical performances while ensuring the compactness of the overall structure of the optical lens. Further, gluing the fifth lens and the sixth lens can also achieve the following technical effects: reducing the spacing distance (e.g., air spacing) between the fifth lens and the sixth lens along the optical axis to reduce the total optical length of the optical lens; reducing the assembly components between the two lenses, reducing the process and reducing the cost; reducing the tolerance sensitivity of the two lenses due to tilt / eccentricity and other problems generated during the assembly process; reducing the light loss caused by reflection between the two lenses and improving the illumination; reducing the field curvature and correcting the off-axis point aberration of the optical lens.

[0045] In an exemplary embodiment, the first lens may have a negative optical power, and its first side surface may be a concave surface, and its second side surface may be a concave surface. The first lens has a negative optical power and has a divergent effect on light, and its first side surface is a concave surface, which can quickly diffuse light and reduce the incident angle of light of the rear lens, which is conducive to achieving a telephoto and high resolution of the optical lens, and can reduce sensitivity and achieve a smaller total optical length.

[0046] In an exemplary embodiment, the second lens may have positive focal power, and its first side surface may be a concave surface, and its second side surface may be a convex surface. The second lens has positive focal power, and its first side surface is a concave surface, and its second side surface is a convex surface, which is conducive to receiving the light passing through the first side of the second lens (i.e., passing through the first lens), and can make the light exit smoothly, which is conducive to improving aberration. In an exemplary embodiment, the second lens is in a meniscus shape as a whole, and its first side surface is a concave surface, which can smoothly receive and further diverge the light; the second side surface is a convex surface, which is conducive to properly converging the light and reducing the total optical length.

[0047] In an exemplary embodiment, the second lens may have negative optical power, and its first side surface may be concave, and its second side surface may be convex. The second lens has negative optical power, is a negative lens, and its first side surface is concave, and its second side surface is convex, so that the light can enter the rear optical system accurately and smoothly, and improve the resolution. In an exemplary embodiment, the second lens may be an aspherical lens, so that the light can enter the rear optical system more accurately and smoothly, and improve the resolution. In an exemplary embodiment, the second lens is meniscus-shaped as a whole, and its first side surface is concave, which can smoothly receive and further diverge the light; the second side surface is convex, which is conducive to properly converging the light and reducing the total optical length.

[0048] In an exemplary embodiment, the third lens may have positive power, and its first side surface may be concave, and its second side surface may be convex. The third lens has positive power, and its first side surface is concave, and its second side surface is convex, which can smoothly receive and converge the divergent light and reduce the caliber of the rear end. In an exemplary embodiment, the third lens may have a flat overall shape to further smoothly receive and converge the divergent light and reduce the caliber of the rear end.

[0049] In an exemplary embodiment, the third lens may have positive power, and its first side surface may be convex, and its second side surface may be convex. The third lens has positive power, and its first side surface and second side surface are both convex, which can appropriately converge the light rays transmitted from the front with a divergent trend, make the light rays transition smoothly, reduce aberrations, and facilitate the realization of high resolution, thereby improving the resolution capability of the optical system.

[0050] In an exemplary embodiment, the fourth lens may have positive power, and its first side surface may be convex, and its second side surface may be convex. In an exemplary embodiment, the first side surface and the second side surface of the third lens and the fourth lens are both convex, and in combination with the fourth lens having positive power, the light can be continuously converged to reduce sensitivity, appropriately converge the light that is diverging in front, and thus make the light transition smooth, reduce aberrations, and facilitate the realization of high resolution, thereby improving the resolution capability of the optical system.

[0051] In an exemplary embodiment, the fifth lens may have positive power, and its first side surface may be a convex surface, and its second side surface may be a convex surface. The fifth lens has positive power, and its first side surface and second side surface are both convex surfaces, which can appropriately converge the light rays transmitted from the front with a divergent trend, make the light rays transition smoothly, reduce aberrations, and facilitate the realization of high resolution, thereby improving the resolution capability of the optical system.

[0052] In an exemplary embodiment, the fifth lens may have a negative optical power, and its first side surface may be a convex surface, and its second side surface may be a concave surface. The fifth lens has a negative optical power, and its first side surface is a convex surface, and its second side surface is a concave surface, which can reduce the degree of deflection of the light emitted by the front lens, which is conducive to a smooth transition of the light and a reduction in light energy loss at the interface, thereby improving the relative illumination and reducing the sensitivity of the system. In an exemplary embodiment, the overall shape of the fifth lens may be relatively flat, further reducing the degree of deflection of the light emitted by the front lens, which is conducive to a smooth transition of the light and a reduction in light energy loss at the interface, thereby improving the relative illumination and reducing the sensitivity of the system.

[0053] In an exemplary embodiment, the sixth lens may have positive power, and its first side surface may be convex, and its second side surface may be convex. The sixth lens has positive power, and its first side surface and second side surface are both convex, which can appropriately converge the light rays transmitted from the front with a divergent trend, make the light rays transition smoothly, reduce aberrations, and facilitate the realization of rear-end miniaturization and high resolution, thereby improving the resolution capability of the optical system.

[0054] In an exemplary embodiment, the sixth lens may have negative power, and its first side surface may be a concave surface, and its second side surface may be a convex surface. The sixth lens has negative power, and its first side surface is a concave surface, and its second side surface is a convex surface, which is conducive to receiving light passing through the first side of the sixth lens (for example, passing through the second lens), and can make the light exit smoothly, which is conducive to improving aberrations.

[0055] In an exemplary embodiment, the sixth lens may have negative power, and its first side surface may be a concave surface, and its second side surface may be a concave surface. The sixth lens has negative power, and its first side surface and second side surface are both concave surfaces, which is conducive to receiving the light passing through the fifth lens and has a divergent effect on the light, which can increase the luminous flux.

[0056] In an exemplary embodiment, the seventh lens may have positive power, and its first side surface may be convex, and its second side surface may be convex. The seventh lens has positive power and has a convergence effect on light. In an exemplary embodiment, the sixth lens has negative power and can be matched with the seventh lens having positive power to effectively correct the aberration of the system. The second side surface of the seventh lens is convex, which is conducive to converging light and can control the CRA to be small, thereby improving optical performance such as image quality and optimizing distortion.

[0057] In an exemplary embodiment, the seventh lens may have positive power, and its first side surface may be convex, and its second side surface may be concave. The seventh lens has positive power, which is conducive to properly converging light and thus making the light trend smooth.

[0058] In an exemplary embodiment, the seventh lens may have negative power, its first side surface may be convex, and its second side surface may be concave. The seventh lens has negative power, has a divergent effect on light, and its first side surface is convex, which can make the incident angle of light smaller, which is conducive to collecting more light into the optical system and achieving high throughput.

[0059] In an exemplary embodiment, the seventh lens may have negative power, and its first side surface may be a concave surface, and its second side surface may be a concave surface. The seventh lens has negative power, and its first side surface and second side surface are both concave surfaces, which is conducive to receiving the light passing through the sixth lens and has a divergent effect on the light, which can increase the luminous flux.

[0060] Figure 1 The optical lens provided in this application can be used as, for example, a vehicle-mounted lens or a laser radar receiving end lens. Figure 1 IMA represents an imaging surface, and light from an object passes through each surface S1 to S16 in sequence and is finally imaged on the imaging surface arranged on the second side, wherein an image sensor chip is arranged on the imaging surface. It should be understood that the optical lens provided in the present application can also be used as, for example, a projection lens or a laser radar transmitting end lens. In this case, Figure 1 Here, IMA represents a light source surface, and light from the light source surface passes through the surfaces S16 to S1 in sequence and is finally projected to the first side, and forms an image or an illuminated area on the first side.

[0061] In this application, 1 is the focal length of the first lens, 2 is the focal length of the second lens, 3 is the focal length of the third lens, is the total focal length of the optical lens, R1 is the radius of curvature of the first side of the first lens, R2 is the radius of curvature of the second side of the first lens, R3 is the radius of curvature of the first side of the second lens, R4 is the radius of curvature of the second side of the second lens, R5 is the radius of curvature of the first side of the third lens, R8 is the radius of curvature of the second side of the fourth lens, R9 is the radius of curvature of the first side of the fifth lens, d1 is the center thickness of the first lens, d6 is the center thickness of the sixth lens, d5 is the center thickness of the fifth lens, F56 is the combined focal length of the fifth lens and the sixth lens, F is the total effective focal length of the optical lens, F2 is the effective focal length of the second lens, and F3 is the effective focal length of the third lens. focal length, F4 is the effective focal length of the fourth lens, F7 is the effective focal length of the seventh lens, TTL is the total optical length of the optical lens, d45 is the distance between the fourth lens and the fifth lens along the optical axis, d47 is the distance between the fourth lens and the seventh lens along the optical axis, d67 is the distance between the sixth lens and the seventh lens along the optical axis, H is the image height corresponding to the maximum field of view of the optical lens, FOV is the maximum field of view of the optical lens, D is the maximum light clearance aperture of the first side surface of the first lens corresponding to the maximum field of view of the optical lens, TTL is the total optical length of the optical lens, θ is the radian value corresponding to the maximum field of view of the optical lens, BFL is the optical back focus of the optical lens, and the above meanings will not be repeated below.

[0062] In an exemplary embodiment, the optical lens may satisfy: -50≤R1 / F<0. By making the optical lens satisfy the above conditional formula and making the first side surface of the first lens a concave surface, the light can be quickly diffused and the incident angle of the light of the rear lens can be reduced, which is conducive to achieving the telephoto and high resolution of the optical lens, and can reduce the sensitivity to achieve a smaller aperture and total optical length. Preferably, the optical lens may further satisfy: -40≤R1 / F≤-1, which is more conducive to achieving a small aperture of the optical lens. More preferably, the optical lens may further satisfy: -33.8596≤R1 / F≤-2.4233, which is more conducive to achieving a small aperture of the optical lens.

[0063] In an exemplary embodiment, the optical lens may satisfy: 0.001≤d45 / TTL≤0.12. By making the optical lens satisfy the above conditional formula, the spacing distance (e.g., air spacing) between the fourth lens and the fifth lens along the optical axis is small, which is conducive to reducing the light trend at the rear end, reducing the rear port diameter, and realizing the miniaturization of the optical lens. Preferably, the optical lens may further satisfy: 0.01≤d45 / TTL≤0.1, which is more conducive to realizing the miniaturization of the optical lens. More preferably, the optical lens may further satisfy: 0.0164≤d45 / TTL≤0.0830, which is more conducive to realizing the miniaturization of the optical lens.

[0064] In an exemplary embodiment, the optical lens may satisfy: -1≤R4 / R5≤0.9. By making the optical lens satisfy the above conditional formula and making the second side of the second lens opposite to the first side of the third lens, the pressure of the converged light can be relieved and the sensitivity can be reduced. Preferably, the optical lens may further satisfy: -0.8≤R4 / R5≤0.7, which is more conducive to achieving low sensitivity of the optical lens. More preferably, the optical lens may further satisfy: -0.6709≤R4 / R5≤0.5993, which is more conducive to achieving low sensitivity of the optical lens.

[0065] In an exemplary embodiment, the optical lens may satisfy: d67 / TTL≥0.07. In an exemplary embodiment, the fifth lens and the sixth lens are glued to form a glued part. By making the optical lens satisfy the above conditional formula, the spacing distance between the glued part and the seventh lens along the optical axis is small, which can effectively reduce the ghost image between the glued part and the seventh lens. Preferably, the optical lens may further satisfy: 0.08≤d67 / TTL≤0.18, which is more conducive to achieving weak ghost images of the optical lens. More preferably, the optical lens may further satisfy: 0.0983≤d67 / TTL≤0.1522, which is more conducive to achieving weak ghost images of the optical lens.

[0066] In an exemplary embodiment, the optical lens may satisfy: 2≤F56 / F≤30. In an exemplary embodiment, the fifth lens and the sixth lens are glued together to form a glued part. By making the optical lens satisfy the above conditional formula and controlling the combined focal length of the glued part, the trend of light entering the glued part can be effectively controlled, the aberration caused by large-angle light can be reduced, and the resolution can be improved. At the same time, the structure of the lens can be made compact, which is conducive to miniaturization. Preferably, the optical lens may further satisfy: 2.5≤F56 / F≤25, which is more conducive to achieving high resolution of the optical lens. More preferably, the optical lens may further satisfy: 3.7509≤F56 / F≤23.5734, which is more conducive to achieving high resolution of the optical lens.

[0067] In an exemplary embodiment, the optical lens may satisfy: |F7 / F|≥3. By making the optical lens satisfy the above conditional formula, the effective focal length of the seventh lens is controlled to be larger, which is conducive to the smooth transition of light to the imaging surface, and further conducive to achieving low sensitivity and large-angle imaging. Preferably, the optical lens may further satisfy: 3.5≤|F7 / F|≤600, which is more conducive to achieving low sensitivity of the optical lens. More preferably, the optical lens may further satisfy: 4.7817≤|F7 / F|≤585.9319, which is more conducive to achieving low sensitivity of the optical lens.

[0068] In an exemplary embodiment, the optical lens may satisfy: BFL / TTL≤0.12. By making the optical lens satisfy the above conditional formula, that is, setting a shorter optical back focus, it is beneficial to achieve miniaturization of the total optical length, quickly focus the light to the imaging system, avoid light scattering, and improve imaging quality. Preferably, the optical lens may further satisfy: 0.03≤BFL / TTL≤0.11, which is more conducive to miniaturization of the optical lens. More preferably, the optical lens may further satisfy: 0.0426≤BFL / TTL≤0.1003, which is more conducive to miniaturization of the optical lens.

[0069] In an exemplary embodiment, the optical lens may satisfy: 4≤TTL / F≤6. By making the optical lens satisfy the above conditional formula, it is conducive to miniaturization of the optical lens. Preferably, the optical lens may further satisfy: 4.2≤TTL / F≤5.8, which is more conducive to miniaturization of the optical lens. More preferably, the optical lens may further satisfy: 4.5761≤TTL / F≤5.4870, which is more conducive to miniaturization of the optical lens.

[0070] In an exemplary embodiment, the optical lens may satisfy: 0.3≤F3 / F4≤5. By making the optical lens satisfy the above conditional formula, and making at least one lens between the third lens and the fourth lens a double convex lens with both the first side and the second side being convex, the light trend of the rear-end optical system can be suppressed, and the sensitivity can be effectively reduced. Preferably, the optical lens may further satisfy: 0.5≤F3 / F4≤2.5, which is more conducive to achieving low sensitivity of the optical lens. More preferably, the optical lens may further satisfy: 0.7522≤F3 / F4≤2.1115, which is more conducive to achieving low sensitivity of the optical lens.

[0071] In an exemplary embodiment, the optical lens may satisfy: 0<D / H / FOV×1°≤0.03. By making the optical lens satisfy the above conditional formula, the telephoto, wide angle, and high edge resolution of the optical lens may be simultaneously satisfied. Preferably, the optical lens may further satisfy: 0.0087≤D / H / FOV×1°≤0.0116, which is more conducive to achieving the telephoto, wide angle, and high edge resolution of the optical lens.

[0072] In an exemplary embodiment, the optical lens may satisfy: -1.5≤R2 / R3≤-0.3. By making the optical lens satisfy the above conditional formula and controlling the radius of curvature of the two adjacent sides of the first lens and the second lens, it is beneficial to make the light transition smoothly and reduce the sensitivity of the system. Preferably, the optical lens may further satisfy: -1≤R2 / R3≤-0.4, which is more conducive to achieving low sensitivity of the optical lens. More preferably, the optical lens may further satisfy: -0.9712≤R2 / R3≤-0.5599, which is more conducive to achieving low sensitivity of the optical lens.

[0073] In an exemplary embodiment, the optical lens may satisfy: -1≤F4 / F7≤0.1. By making the optical lens satisfy the above conditional formula, a small FNO can be achieved, which is conducive to increasing the amount of light passing through, and can make the entrance pupil diameter large, which in turn helps to improve the relative illumination. Preferably, the optical lens may further satisfy: -0.7≤F4 / F7≤0.1, which is more conducive to achieving low sensitivity of the optical lens. More preferably, the optical lens may further satisfy: -0.4444≤F4 / F7≤0.0537, which is more conducive to achieving low sensitivity of the optical lens.

[0074] In an exemplary embodiment, the optical lens may satisfy: (|F7|-|F4|) / d47≥1. By making the optical lens satisfy the above conditional formula, reasonably allocating the effective focal lengths of the fourth lens and the seventh lens, and controlling the spacing between the fourth lens and the seventh lens along the optical axis, the light trend can be smoothed and the system sensitivity can be reduced. Preferably, the optical lens may further satisfy: 1≤(|F7|-|F4|) / d47≤500, which is more conducive to achieving low sensitivity of the optical lens. More preferably, the optical lens may further satisfy: 1.3716≤(|F7|-|F4|) / d47≤450.6691, which is more conducive to achieving low sensitivity of the optical lens.

[0075] In an exemplary embodiment, the optical lens may satisfy: (d67 BFL) / (d67+BFL)≤2. By making the optical lens satisfy the above conditional formula, it is helpful to balance the ratio between the optical back focus of the optical system and the distance between the fifth lens and the sixth lens along the optical axis, thereby improving the assembly yield. Preferably, the optical lens can further satisfy: 0.5≤(d67 BFL) / (d67+BFL)≤2, which is more conducive to achieving a high assembly yield of the optical lens. More preferably, the optical lens can further meet the following requirements: 0.9138≤(d67 BFL) / (d67+BFL)≤1.5611, which is more conducive to achieving a high assembly yield of optical lenses.

[0076] In an exemplary embodiment, the optical lens may satisfy: 0.1≤(d5+d6) / TTL≤0.3. In an exemplary embodiment, the fifth lens and the sixth lens may be glued to form a glued part. By making the optical lens satisfy the above conditional formula, the thickness of the glued part lens is appropriately increased within a certain range, which is conducive to enhancing the optical lens's ability to control light, making the light trend smoother, and reducing sensitivity while reducing chromatic aberration. Preferably, the optical lens may further satisfy: 0.13≤(d5+d6) / TTL≤0.25, which is more conducive to achieving low sensitivity of the optical lens. More preferably, the optical lens may further satisfy: 0.1482≤(d5+d6) / TTL≤0.2233, which is more conducive to achieving low sensitivity of the optical lens.

[0077] In an exemplary embodiment, the optical lens may satisfy: 55°≤(FOV×F) / H≤85°. By making the optical lens satisfy the above conditional formula, the telephoto, large angle, and high edge resolution of the optical lens may be simultaneously satisfied. Preferably, the optical lens may further satisfy: 58°≤(FOV×F) / H≤83°, which is more conducive to achieving a large field of view of the optical lens. More preferably, the optical lens may further satisfy: 61.2212°≤(FOV×F) / H≤78.9206°, which is more conducive to achieving a large field of view of the optical lens.

[0078] In an exemplary embodiment, the optical lens may satisfy: -5≤R8 / R9≤-1. By making the optical lens satisfy the above conditional formula and making the second side surface of the fourth lens opposite to the first side surface of the fifth lens, it is helpful to relieve the pressure of converging light and reduce the sensitivity of the optical lens. Preferably, the optical lens may further satisfy: -3.5≤R8 / R9≤-1.2, which is more conducive to achieving low sensitivity of the optical lens. More preferably, the optical lens may further satisfy: -3.1222≤R8 / R9≤-1.4532, which is more conducive to achieving low sensitivity of the optical lens.

[0079] In an exemplary embodiment, the optical lens may satisfy: -25≤R8 / F≤-2. By making the optical lens satisfy the above conditional formula and controlling the radius of curvature of the second side of the fourth lens, the light emitted through the fourth lens can enter the fifth lens in a gentle trend, thereby reducing the sensitivity of the system. Preferably, the optical lens may further satisfy: -20≤R8 / F≤-2, which is more conducive to achieving low sensitivity of the optical lens. More preferably, the optical lens may further satisfy: -16.0286≤R8 / F≤-3.0987, which is more conducive to achieving low sensitivity of the optical lens.

[0080] In an exemplary embodiment, the optical lens can meet: 0.3 rad -1 ≤D / (H θ)≤0.8rad -1 By making the optical lens satisfy the above conditional formula, the front end diameter can be made small under the premise that the maximum field angle of the optical lens and the corresponding image height are constant, thereby realizing the miniaturization of the optical lens. Preferably, the optical lens can further satisfy: 0.45rad -1 ≤D / (H θ)≤0.7rad -1 , which is more conducive to realizing a small aperture of the optical lens. More preferably, the optical lens can further meet: 0.5007rad -1 ≤D / (H θ)≤0.6653rad -1 ,, is more conducive to realizing the small aperture of the optical lens.

[0081] In an exemplary embodiment, the optical lens may satisfy: 6.5≤|F2 / F|≤125. By making the optical lens satisfy the above conditional formula, the effective focal length of the second lens is larger, which helps to smooth the light trend, thereby making the optical system highly stable and reducing the sensitivity of the optical system. Preferably, the optical lens may further satisfy: 7≤|F2 / F|≤120, which is more conducive to achieving low sensitivity of the optical lens. More preferably, the optical lens may further satisfy: 7.1658≤|F2 / F|≤118.6000, which is more conducive to achieving low sensitivity of the optical lens.

[0082] In an exemplary embodiment, the optical lens may satisfy: 4≤| 1 / 2|≤100. By making the optical lens meet the above condition, the first lens can collect large-angle light and pass the light to the second lens. At this time, since the focal length of the second lens is relatively small, the light can be smoothly transferred to the third lens. In addition, the first lens has a stronger ability to adjust light than the second lens. 1 / When the value of 2| is greater than 4, the optical lens has a better light adjustment effect. Preferably, the optical lens can further satisfy: 4.5≤| 1 / 2|≤80, which is more conducive to achieving high resolution of the optical lens. More preferably, the optical lens can further satisfy: 4.8674≤| 1 / 2|≤76.4832, which is more conducive to achieving high resolution of optical lenses.

[0083] In an exemplary embodiment, the optical lens may satisfy: 0.1≤| 1+ 2+ 3| / ≤0.55. By making the optical lens satisfy the above conditional formula, even if the ratio of the focal power of the front lens group (composed of the first lens, the second lens, and the third lens) of the optical system to the total focal power is between 0.1 and 0.55, a better light adjustment capability can be achieved, that is, on the one hand, more light can be collected to enter the optical system; on the other hand, after the light is emitted from the third lens, the fourth lens can collect more light, thereby improving the overall imaging quality of the optical system. Preferably, the optical lens can further satisfy: 0.25≤| 1+ 2+ 3| / ≤0.52, which is more conducive to achieving high resolution of the optical lens. More preferably, the optical lens can further meet: 0.2977≤| 1+ 2+ 3| / ≤0.4984, which is more conducive to achieving high resolution of optical lenses.

[0084] In an exemplary embodiment, the optical lens may satisfy: -40≤R1 / (R2+d1)≤-1. By making the optical lens satisfy the above conditional formula, it is beneficial to reduce the front port diameter of the optical lens, thereby reducing the volume of the optical lens, which is beneficial to miniaturization and cost reduction. Preferably, the optical lens may further satisfy: -35≤R1 / (R2+d1)≤-1.5, which is more conducive to miniaturization of the optical lens. More preferably, the optical lens may further satisfy: -33.2571≤R1 / (R2+d1)≤-1.8790, which is more conducive to miniaturization of the optical lens.

[0085] In an exemplary embodiment, at least one of the first to seventh lenses may be a spherical lens or an aspherical lens. In an exemplary embodiment, the second lens and / or the seventh lens may be an aspherical lens. The present application does not specifically limit the specific number of spherical lenses and aspherical lenses. When focusing on imaging quality, the number of aspherical lenses can be increased, or even all lenses use aspherical lenses. The characteristic of an aspherical lens is that the curvature changes continuously from the center of the lens to the periphery. Unlike a spherical lens with a constant curvature from the center of the lens to the periphery, an aspherical lens has a better curvature radius characteristic, and has the advantages of improving distortion aberration and improving astigmatism aberration. After 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.

[0086] In an exemplary embodiment, the first lens to the seventh lens may be a glass lens or a plastic lens. The present application does not specifically limit the specific number of glass lenses and plastic lenses. An optical lens made of glass can suppress the deviation of the back focus of the optical lens with temperature changes to improve the stability of the system. At the same time, the use of glass material can avoid problems such as lens imaging blur caused by high and low temperature changes in the use environment and affecting the normal use of the lens. Specifically, when focusing on temperature performance and resolution quality, the first lens to the seventh lens can all be glass aspherical lenses. In applications where temperature stability requirements are lower, the first lens to the seventh lens in the optical lens can also be made of plastic. Using plastic to make an optical lens can effectively reduce production costs. Of course, the first lens to the seventh lens in the optical lens can also be made of a combination of plastic and glass.

[0087] In an exemplary embodiment, the first side surface and / or the second side surface of the seventh lens may have a reverse curve, which is beneficial for better correcting the aberration of light emitted from different fields of view.

[0088] According to the above-mentioned embodiment of the present application, the optical lens has at least one beneficial effect of low sensitivity, weak ghost image, high luminous flux, large field of view, high assembly yield, short back focus, small aperture, high resolution, miniaturization, small volume, long focus, small FNO, etc. through the reasonable setting of parameters such as lens shape and optical focal length.

[0089] Those skilled in the art should understand that the total optical length TTL of the optical lens used above refers to the on-axis distance from the first side surface of the first lens to the imaging plane or the light source plane; the back focal length BFL of the optical lens refers to the on-axis distance from the second side surface of the seventh lens to the imaging plane or the light source plane; the maximum field of view FOV of the optical lens is associated with the image height H, which refers to the field of view corresponding to the image height H.

[0090] However, it should be understood by those skilled in the art that, without departing from the technical solution claimed in the present application, the number of lenses constituting the lens can be changed to obtain the various results and advantages described in this specification. For example, although seven lenses are described as an example in the embodiment, the optical lens is not limited to including seven lenses. If necessary, the optical lens may also include other numbers of lenses. The following further describes specific embodiments of the optical lens applicable to the above-mentioned embodiments with reference to the accompanying drawings.

[0091] Example 1

[0092] The following reference Figure 1 An optical lens according to Embodiment 1 of the present application is described. Figure 1 A schematic structural diagram of an optical lens according to Example 1 of the present application is shown.

[0093] like Figure 1As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in sequence from the first side to the second side along the optical axis.

[0094] The first lens L1 has negative refractive power, and its first side surface S1 is a concave surface, and its second side surface S2 is a concave surface.

[0095] The second lens L2 has positive refractive power, a first side surface S4 thereof is a concave surface, and a second side surface S5 thereof is a convex surface.

[0096] The third lens L3 has positive refractive power, a first side surface S6 of which is a concave surface, and a second side surface S7 of which is a convex surface.

[0097] The fourth lens L4 has positive refractive power, and its first side surface S8 is convex, and its second side surface S9 is concave.

[0098] The fifth lens L5 has negative refractive power, and its first side surface S10 is convex, and its second side surface S11 is concave.

[0099] The sixth lens L6 has positive refractive power, and its first side surface S11 is a convex surface, and its second side surface S12 is a convex surface.

[0100] The seventh lens L7 has negative refractive power, and its first side surface S13 is convex, and its second side surface S14 is concave.

[0101] The first side surface S13 and the second side surface S14 of the seventh lens L7 may have inverse curvature, and the fifth lens L5 and the sixth lens L6 are cemented to form a cemented member.

[0102] The optical lens may further include a stop STO, and the stop STO may be disposed between the third lens L3 and the fourth lens L4.

[0103] Optionally, the optical lens may further include a protective glass having a first side surface S15 and a second side surface S16.

[0104] The optical lens provided in this application can be used as, for example, a vehicle-mounted lens or a laser radar receiving end lens. In this case, Figure 1 IMA represents the imaging surface, and the light from the object passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface IMA disposed on the second side, wherein an image sensor chip is disposed on the imaging surface. It should be understood that the optical lens provided in the present application can also be used as, for example, a projection lens or a laser radar transmitting end lens. In this case, Figure 1 Here, IMA represents a light source surface, and light from the light source surface passes through the surfaces S16 to S1 in sequence and is finally projected to the first side, and forms an image or an illuminated area on the first side.

[0105] Table 1 shows the curvature radius R, thickness / distance, refractive index Nd, and Abbe number Vd of each lens of the optical lens of Example 1.

[0106] Table 1

[0107] In this embodiment, the first side surface S3, the second side surface S4 of the second lens L2 and the first side surface S13 and the second side surface S14 of the seventh lens L7 may be aspherical surfaces, and the surface shape of each aspherical lens may be defined by but not limited to the following aspherical surface formula: (1)

[0108] Wherein, x is the distance vector height from the vertex of the aspherical surface when the aspherical surface is at a height of h along the optical axis; c is the paraxial curvature of the aspherical surface, c=1 / R (i.e., the paraxial curvature c is the reciprocal of the curvature radius R in Table 1 above); k is the cone coefficient; Ai is the correction coefficient of the i-th order of the aspherical surface. Table 2 below gives the cone coefficient k and the high-order coefficients A4, A6, A8, A10 that can be used for each aspherical mirror surface S3, S4, S13, S14 in Example 1.

[0109] Table 2

[0110] Figure 2 The axial chromatic aberration diagram of the optical lens of Example 1 is shown. The reason for the axial chromatic aberration is that the positions of the optical lens imaging the light of each wavelength are different, so that the focal planes of the images of different colors of light cannot overlap when the final image is formed, and the complex color light forms dispersion. Figure 2 Take the axial chromatic aberration diagram of the optical lens shown as an example, the colored lines represent the chromatic aberration effects of different wavelengths, and the more concentrated the lines are, the better the chromatic aberration is. Figure 2 As shown, the chromatic aberration range of the optical lens of Example 1 is within the ideal range, so the optical lens provided in Example 1 of the present application has good imaging quality.

[0111] Example 2

[0112] The following reference Figure 3 The optical lens according to Embodiment 2 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Figure 3 A schematic structural diagram of an optical lens according to Embodiment 2 of the present application is shown.

[0113] like Figure 3As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in order from the first side to the second side along the optical axis. The positive and negative optical power of each lens of the optical lens of Example 2 is the same as that of Example 1. Among them, the first side surface S13 and the second side surface S14 of the seventh lens L7 have reverse curvature.

[0114] Table 3 shows the parameters of each lens of the optical lens of Example 2. The surface shape of each lens can be obtained according to the table below and will not be repeated. Table 4 shows the parameters of the aspheric lens that can be used in the embodiment, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above Example 1.

[0115] Table 3

[0116] Table 4

[0117] Figure 4 The axial chromatic aberration diagram of the optical lens of Example 2 is shown, as shown in FIG. Figure 4 As shown, the optical lens provided in Example 2 of the present application has good imaging quality.

[0118] Example 3

[0119] The following reference Figure 5 The optical lens according to Embodiment 3 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Figure 5 A schematic structural diagram of an optical lens according to Example 3 of the present application is shown.

[0120] like Figure 5 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in order from the first side to the second side along the optical axis. The difference between the positive and negative optical power of each lens of the optical lens of Example 3 and Example 1 is that the second lens L2 of Example 3 has a negative optical power and the seventh lens L7 has a positive optical power. Among them, the first side surface S13 and the second side surface S14 of the seventh lens L7 have a reverse curve.

[0121] Table 5 shows the parameters of each lens of the optical lens of Example 3. The surface shape of each lens can be obtained according to the table below and will not be repeated. Table 6 shows the parameters of the aspheric lens that can be used in the embodiment, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above Example 1.

[0122] Table 5

[0123] Table 6

[0124] Figure 6 The axial chromatic aberration diagram of the optical lens of Example 3 is shown, as shown in FIG. Figure 6 As shown, the optical lens provided in Example 3 of the present application has good imaging quality.

[0125] Example 4

[0126] The following reference Figure 7 The optical lens according to Embodiment 4 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Figure 7 A schematic structural diagram of an optical lens according to Example 4 of the present application is shown.

[0127] like Figure 7 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in order from the first side to the second side along the optical axis. The difference between the positive and negative optical power of each lens of the optical lens of Example 4 and Example 1 is that the second lens L2 of Example 4 has a negative optical power and the seventh lens L7 has a positive optical power. Among them, the first side surface S13 and the second side surface S14 of the seventh lens L7 have a reverse curve.

[0128] Table 7 shows the parameters of each lens of the optical lens of Example 4. The surface shape of each lens can be obtained according to the table below and will not be repeated. Table 8 shows the parameters of the aspheric lens that can be used in the embodiment, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above Example 1.

[0129] Table 7

[0130] Table 8

[0131] Figure 8 The axial chromatic aberration diagram of the optical lens of Example 4 is shown, as shown in FIG. Figure 8 As shown, the optical lens provided in Example 4 of the present application has good imaging quality.

[0132] Example 5

[0133] The following reference Fig. 9 The optical lens according to Embodiment 5 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig. 9 A schematic structural diagram of an optical lens according to Example 5 of the present application is shown.

[0134] like Fig. 9 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in order from the first side to the second side along the optical axis. The difference between the positive and negative optical power of each lens of the optical lens of Example 5 and Example 1 is that the second lens L2 of Example 5 has a negative optical power. Among them, the second side surface S14 of the seventh lens L7 has a reverse curve.

[0135] Table 9 shows the parameters of each lens of the optical lens of Example 5. The surface shape of each lens can be obtained according to the table below and will not be repeated. Table 10 shows the parameters of the aspheric lens that can be used in the embodiment, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above Example 1.

[0136] Table 9

[0137] Table 10

[0138] Fig.10 The axial chromatic aberration diagram of the optical lens of Example 5 is shown as follows: Fig.10 As shown, the optical lens provided in Example 5 of the present application has good imaging quality.

[0139] Example 6

[0140] The following reference Fig.11 The optical lens according to Embodiment 6 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.11 A schematic structural diagram of an optical lens according to Example 6 of the present application is shown.

[0141] like Fig.11 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in order from the first side to the second side along the optical axis. The difference between the positive and negative optical power of each lens of the optical lens of Example 6 and Example 1 is that the second lens L2 of Example 6 has a negative optical power. Among them, the second side surface S14 of the seventh lens L7 has a reverse curve.

[0142] Table 11 shows the parameters of each lens of the optical lens of Example 6. The surface shape of each lens can be obtained according to the table below and will not be repeated. Table 12 shows the parameters of the aspheric lens that can be used in the embodiment, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above Example 1.

[0143] Table 11

[0144] Table 12

[0145] Fig.12 The axial chromatic aberration diagram of the optical lens of Example 6 is shown as follows: Fig.12 As shown, the optical lens provided in Example 6 of the present application has good imaging quality.

[0146] Example 7

[0147] The following reference Fig.13 The optical lens according to Embodiment 7 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.13 A schematic structural diagram of an optical lens according to Example 7 of the present application is shown.

[0148] like Fig.13 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in order from the first side to the second side along the optical axis. The difference between the positive and negative optical power of each lens of the optical lens of Example 7 and Example 1 is that the second lens L2 of Example 7 has a negative optical power. Among them, the second side surface S14 of the seventh lens L7 has a reverse curve.

[0149] Table 13 shows the parameters of each lens of the optical lens of Example 7. The surface shape of each lens can be obtained according to the table below and will not be repeated. Table 14 shows the parameters of the aspheric lens that can be used in the embodiment, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above Example 1.

[0150] Table 13

[0151] Table 14

[0152] Fig.14 The axial chromatic aberration diagram of the optical lens of Example 7 is shown, as shown in FIG. Fig.14 As shown, the optical lens provided in Example 7 of the present application has good imaging quality.

[0153] Example 8

[0154] The following reference Fig.15 The optical lens according to Embodiment 8 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.15 A schematic structural diagram of an optical lens according to Example 8 of the present application is shown.

[0155] like Fig.15 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in order from the first side to the second side along the optical axis. The difference between the positive and negative optical power of each lens of the optical lens of Example 8 and Example 1 is that the second lens L2 of Example 8 has a negative optical power. Among them, the second side surface S14 of the seventh lens L7 has a reverse curve.

[0156] Table 15 shows the parameters of each lens of the optical lens of Example 8. The surface shape of each lens can be obtained according to the table below and will not be repeated. Table 16 shows the parameters of the aspheric lens that can be used in the embodiment, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above Example 1.

[0157] Table 15

[0158] Table 16

[0159] Fig.16 The axial chromatic aberration diagram of the optical lens of Example 8 is shown as follows: Fig.16 As shown, the optical lens provided in Example 8 of the present application has good imaging quality.

[0160] Example 9

[0161] The following reference Fig.17 The optical lens according to Embodiment 9 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.17 A schematic structural diagram of an optical lens according to Example 9 of the present application is shown.

[0162] like Fig.17 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in order from the first side to the second side along the optical axis. The difference between the positive and negative optical power of each lens of the optical lens of Example 9 and Example 1 is that the second lens L2 of Example 9 has a negative optical power, the fifth lens L5 has a positive optical power, and the sixth lens L6 has a negative optical power. Among them, the first side surface S13 and the second side surface S14 of the seventh lens L7 have a reverse curve.

[0163] Table 17 shows the parameters of each lens of the optical lens of Example 9. The surface shape of each lens can be obtained according to the table below and will not be repeated. Table 18 shows the parameters of the aspheric lens that can be used in the embodiment, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above Example 1.

[0164] Table 17

[0165] Table 18

[0166] Fig.18 The axial chromatic aberration diagram of the optical lens of Example 9 is shown as follows: Fig.18 As shown, the optical lens provided in Example 9 of the present application has good imaging quality.

[0167] Example 10

[0168] The following reference Fig.19 The optical lens according to Embodiment 10 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.19 A schematic structural diagram of an optical lens according to Example 10 of the present application is shown.

[0169] like Fig.19 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in order from the first side to the second side along the optical axis. The difference between the positive and negative optical power of each lens of the optical lens of Example 10 and Example 1 is that the second lens L2 of Example 10 has a negative optical power, the fifth lens L5 has a positive optical power, and the sixth lens L6 has a negative optical power. Among them, the first side surface S13 and the second side surface S14 of the seventh lens L7 have reverse curvature.

[0170] Table 19 shows the parameters of each lens of the optical lens of Example 10. The surface shape of each lens can be obtained according to the following table and will not be repeated. Table 20 shows the parameters of the aspheric lens that can be used in the embodiment, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above-mentioned Example 1.

[0171] Table 19

[0172] Table 20

[0173] Fig. 20 The axial chromatic aberration diagram of the optical lens of Example 10 is shown as follows: Fig. 20As shown, the optical lens provided in Example 10 of the present application has good imaging quality.

[0174] Embodiment 11

[0175] The following reference Fig.21 The optical lens according to Embodiment 11 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.21 A schematic structural diagram of an optical lens according to Example 11 of the present application is shown.

[0176] like Fig.21 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in order from the first side to the second side along the optical axis. The difference between the positive and negative focal powers of the lenses of the optical lens of Example 11 and Example 1 is that the second lens L2 of Example 11 has a negative focal power, the fifth lens L5 has a positive focal power, the sixth lens L6 has a negative focal power, and the seventh lens L7 has a positive focal power. Among them, the first side surface S13 and the second side surface S14 of the seventh lens L7 have a reverse curve.

[0177] Table 21 shows the parameters of each lens of the optical lens of Example 11. The surface shape of each lens can be obtained according to the table below and will not be repeated. Table 22 shows the parameters of the aspheric lens that can be used in the embodiment, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above Example 1.

[0178] Table 21

[0179] Table 22

[0180] Fig. 22 The axial chromatic aberration diagram of the optical lens of Example 11 is shown as follows: Fig. 22 As shown, the optical lens provided in Example 11 of the present application has good imaging quality.

[0181] Example 12

[0182] The following reference Fig.23 The optical lens according to Embodiment 12 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.23 A schematic structural diagram of an optical lens according to Example 12 of the present application is shown.

[0183] like Fig.23As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in order from the first side to the second side along the optical axis. The difference between the positive and negative optical power of each lens of the optical lens of Example 12 and Example 1 is that the second lens L2 of Example 12 has a negative optical power, the fifth lens L5 has a positive optical power, the sixth lens L6 has a negative optical power, and the seventh lens L7 has a positive optical power. Among them, the second side surface S14 of the seventh lens L7 has a reverse curve.

[0184] Table 23 shows the parameters of each lens of the optical lens of Example 12. The surface shape of each lens can be obtained according to the following table and will not be repeated. Table 24 shows the parameters of the aspheric lens that can be used in the embodiment, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above-mentioned Example 1.

[0185] Table 23

[0186] Table 24

[0187] Fig.24 The axial chromatic aberration diagram of the optical lens of Example 12 is shown as follows: Fig.24 As shown, the optical lens provided in Example 12 of the present application has good imaging quality.

[0188] Example 13

[0189] The following reference Fig.25 The optical lens according to Embodiment 13 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.25 A schematic structural diagram of an optical lens according to Example 13 of the present application is shown.

[0190] like Fig.25 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in order from the first side to the second side along the optical axis. The difference between the positive and negative focal powers of the lenses of the optical lens of Example 13 and Example 1 is that the second lens L2 of Example 13 has a negative focal power, the fifth lens L5 has a positive focal power, the sixth lens L6 has a negative focal power, and the seventh lens L7 has a positive focal power. Among them, the first side surface S13 and the second side surface S14 of the seventh lens L7 have a reverse curve.

[0191] Table 25 shows the parameters of each lens of the optical lens of Example 13. The surface shape of each lens can be obtained according to the following table and will not be repeated. Table 26 shows the parameters of the aspheric lens that can be used in the embodiment, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above-mentioned Example 1.

[0192] Table 25

[0193] Table 26

[0194] Fig.26 The axial chromatic aberration diagram of the optical lens of Example 13 is shown, as shown in FIG. Fig.26 As shown, the optical lens provided in Example 13 of the present application has good imaging quality.

[0195] Embodiment 14

[0196] The following reference Fig. 27 The optical lens according to Embodiment 14 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig. 27 A schematic structural diagram of an optical lens according to Example 14 of the present application is shown.

[0197] like Fig. 27 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in order from the first side to the second side along the optical axis. The difference between the positive and negative focal powers of the lenses of the optical lens of Example 14 and Example 1 is that the second lens L2 of Example 14 has a negative focal power, the fifth lens L5 has a positive focal power, the sixth lens L6 has a negative focal power, and the seventh lens L7 has a positive focal power. Among them, the first side surface S13 and the second side surface S14 of the seventh lens L7 have a reverse curve.

[0198] Table 27 shows the parameters of each lens of the optical lens of Example 14. The surface shape of each lens can be obtained according to the following table and will not be repeated. Table 28 shows the parameters of the aspheric lens that can be used in the embodiment, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above-mentioned Example 1.

[0199] Table 27

[0200] Table 28

[0201] Fig.28 The axial chromatic aberration diagram of the optical lens of Example 14 is shown as follows: Fig.28As shown, the optical lens provided in Example 14 of the present application has good imaging quality.

[0202] Embodiment 15

[0203] The following reference Fig.29 The optical lens according to Embodiment 15 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.29 A schematic structural diagram of an optical lens according to Example 15 of the present application is shown.

[0204] like Fig.29 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in order from the first side to the second side along the optical axis. The difference between the positive and negative optical power of each lens of the optical lens of Example 15 and Example 1 is that the second lens L2 of Example 15 has a negative optical power. Among them, the first side surface S13 and the second side surface S14 of the seventh lens L7 have a reverse curve.

[0205] Table 29 shows the parameters of each lens of the optical lens of Example 15. The surface shape of each lens can be obtained according to the following table and will not be repeated. Table 30 shows the parameters of the aspheric lens that can be used in the embodiment, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above-mentioned Example 1.

[0206] Table 29

[0207] Table 30

[0208] Fig.30 The axial chromatic aberration diagram of the optical lens of Example 15 is shown, as shown in FIG. Fig.30 As shown, the optical lens provided in Example 15 of the present application has good imaging quality.

[0209] Example 16

[0210] The following reference Fig.31 The optical lens according to Embodiment 16 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.31 A schematic structural diagram of an optical lens according to Example 16 of the present application is shown.

[0211] like Fig.31As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in order from the first side to the second side along the optical axis. The difference between the positive and negative optical power of each lens of the optical lens of Example 16 and Example 1 is that the second lens L2 of Example 16 has a negative optical power. Among them, the first side surface S13 and the second side surface S14 of the seventh lens L7 have a reverse curve.

[0212] Table 31 shows the parameters of each lens of the optical lens of Example 16. The surface shape of each lens can be obtained according to the following table and will not be repeated. Table 32 shows the parameters of the aspheric lens that can be used in the embodiment, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above-mentioned Example 1.

[0213] Table 31

[0214] Table 32

[0215] Fig.32 The axial chromatic aberration diagram of the optical lens of Example 16 is shown. Fig.32 As shown, the optical lens provided in Example 16 of the present application has good imaging quality.

[0216] In summary, Examples 1 to 16 respectively satisfy the relationships shown in Table 33-1 and Table 33-2. In Table 33-1 and Table 33-2, the units of F, TTL, BFL, H, F1~F7, F56, and D are millimeters (mm), the unit of FOV is degrees (°), and the unit of θ is radians (rad).

[0217] Table 33-1

[0218] Table 33-2

[0219] The present application also provides an electronic device, which may include an optical lens according to the above-mentioned embodiment of the present application and an imaging element for converting an optical image formed by the optical lens into an electrical signal. The electronic device may be an independent electronic device such as a detection distance camera, or an imaging module integrated in a device such as a detection distance device. In addition, the electronic device may also be an independent imaging device such as a vehicle-mounted camera, or an imaging module integrated in an auxiliary driving system. In an exemplary embodiment, the electronic device may include an optical lens and a light source according to the above-mentioned embodiment of the present application, and the light emitted by the light source is projected onto a target area after passing through the optical lens to form an image or illuminate an area.

[0220] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. An optical lens, characterized in that: The optical lens includes, in sequence from the first side to the second side along the optical axis: A first lens having negative optical power, wherein the first side surface is concave and the second side surface is concave; A second lens having positive or negative optical power, wherein the first side surface is concave and the second side surface is convex; a third lens element having positive power, wherein the second side surface of the third lens element is convex; a fourth lens having positive power, wherein the first side surface is convex and the second side surface is convex; a fifth lens having optical power, wherein the first side surface of the fifth lens is convex; a sixth lens having optical power; and a seventh lens having positive or negative optical power; The number of lenses with optical power in the optical lens is seven, and the optical lens satisfies: 4≤| 1 / 2|≤100,0.1≤| 1+ 2+ 3| / ≤0.55,6.5≤|F2 / F|≤125, Wherein, F is the total effective focal length of the optical lens, F2 is the effective focal length of the second lens, 1 is the focal length of the first lens, 2 is the focal length of the second lens, 3 is the focal length of the third lens, is the total focal power of the optical lens.

2. The optical lens according to claim 1, characterized in that: The fifth lens has positive or negative power.

3. The optical lens according to claim 1, characterized in that: The sixth lens has positive or negative refractive power.

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

5. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: 2≤F56 / F≤30, Wherein, F56 is the combined focal length of the fifth lens and the sixth lens, and F is the total effective focal length of the optical lens.

6. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: 0.001≤d45 / TTL≤0.12, Wherein, TTL is the total optical length of the optical lens, and d45 is the spacing distance between the fourth lens and the fifth lens along the optical axis.

7. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: 55°≤(FOV×F) / H≤85°, Among them, F is the total effective focal length of the optical lens, H is the image height corresponding to the maximum field of view angle of the optical lens, and FOV is the maximum field of view angle of the optical lens.

8. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: 0<D / H / FOV×1°≤0.03, Among them, D is the maximum light clearance aperture of the first side surface of the first lens corresponding to the maximum field of view angle of the optical lens, H is the image height corresponding to the maximum field of view angle of the optical lens, and FOV is the maximum field of view angle of the optical lens.

9. The optical lens according to claim 1, characterized in that: The optical lens meets at least one of the following requirements: 0.3rad -1 ≤D / (H θ)≤0.8rad -1 ,4≤TTL / F≤6, Among them, F is the total effective focal length of the optical lens, TTL is the total optical length of the optical lens, D is the maximum light clearance aperture of the first side of the first lens corresponding to the maximum field of view angle of the optical lens, H is the image height corresponding to the maximum field of view angle of the optical lens, and θ is the radian value corresponding to the maximum field of view angle of the optical lens.

10. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: BFL / TTL≤0.12, Wherein, TTL is the total optical length of the optical lens, and BFL is the optical back focus of the optical lens.

11. The optical lens according to claim 1, characterized in that: The optical lens meets at least one of the following requirements: -40≤R1 / (R2+d1)≤-1, 0.3≤F3 / F4≤5, Among them, 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, d1 is the center thickness of the first lens, F3 is the effective focal length of the third lens, and F4 is the effective focal length of the fourth lens.

12. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: |F7 / F|≥3, Wherein, F is the total effective focal length of the optical lens, and F7 is the effective focal length of the seventh lens.

13. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: -1≤F4 / F7≤0.1, Wherein, F4 is the effective focal length of the fourth lens, and F7 is the effective focal length of the seventh lens.

14. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: (|F7|-|F4|) / d47≥1, Wherein, F4 is the effective focal length of the fourth lens, F7 is the effective focal length of the seventh lens, and d47 is the spacing distance between the fourth lens and the seventh lens along the optical axis.

15. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: -50≤R1 / F<0, Wherein, R1 is the curvature radius of the first side surface of the first lens, and F is the total effective focal length of the optical lens.

16. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: -25≤R8 / F≤-2, Wherein, R8 is the curvature radius of the second side surface of the fourth lens, and F is the total effective focal length of the optical lens.

17. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: d67 / TTL ≥ 0.07, Wherein, d67 is the distance between the sixth lens and the seventh lens along the optical axis, and TTL is the total optical length of the optical lens.

18. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: -1.5≤R2 / R3≤-0.3, Wherein, R2 is the curvature radius of the second side surface of the first lens, and R3 is the curvature radius of the first side surface of the second lens.

19. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: -1≤R4 / R5≤0.9, Wherein, R4 is the curvature radius of the second side surface of the second lens, and R5 is the curvature radius of the first side surface of the third lens.

20. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: -5≤R8 / R9≤-1, Wherein, R8 is the curvature radius of the second side surface of the fourth lens, and R9 is the curvature radius of the first side surface of the fifth lens.

21. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: (d67 BFL) / (d67+BFL)≤2, Wherein, d67 is the distance between the sixth lens and the seventh lens along the optical axis, and BFL is the optical back focus of the optical lens.

22. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: 0.1≤(d5+d6) / TTL≤0.3, Wherein, d6 is the center thickness of the sixth lens, d5 is the center thickness of the fifth lens, and TTL is the total optical length of the optical lens.

23. The optical lens according to claim 1, characterized in that: The optical lens meets at least one of the following requirements: <h2 style=";text-align:left;direction:ltr">-40≤R1 / F≤-1,0.01≤d45 / TTL≤0.1,-0.8≤R4 / R5≤0.7,0.08 ≤d67 / TTL≤0.18,2.5≤F56 / F≤25,3.5≤|F7 / F|≤600,0.03≤BF L / TTL≤0.11,4.2≤TTL / F≤5.8,0.5≤F3 / F4≤2.5,-1≤R2 / R3≤- 0.4,-0.7≤F4 / F7≤0.1,1≤(|F7|-|F4|) / d47≤500,0.5≤(d67<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr"> BFL) / (d67+BFL)≤2,0.13≤(d5+d6) / TTL≤0.25,58°≤(FO V×F) / H≤83°,-3.5≤R8 / R9≤-1.2,-20≤R8 / F≤-2,0.45rad<h2 style=";text-align:left;direction:ltr"> -1 <h2 style=";text-align:left;direction:ltr"> ≤D / (H<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr"> θ)≤0.7rad<h2 style=";text-align:left;direction:ltr"> -1 <h2 style=";text-align:left;direction:ltr"> ,7≤|F2 / F|≤120,4.5≤|<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr"> 1 / <h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr"> 2|≤80, 0.25≤| 1+ 2+ 3| / ≤0.52, -35≤R1 / (R2+d1)≤-1.5, in, 1 is the focal length of the first lens, 2 is the focal length of the second lens, 3 is the focal length of the third lens, is the total optical power of the optical lens, R1 is the radius of curvature of the first side surface of the first lens, R2 is the radius of curvature of the second side surface of the first lens, R3 is the radius of curvature of the first side surface of the second lens, R4 is the radius of curvature of the second side surface of the second lens, R5 is the radius of curvature of the first side surface of the third lens, R8 is the radius of curvature of the second side surface of the fourth lens, R9 is the radius of curvature of the first side surface of the fifth lens, d1 is the center thickness of the first lens, d6 is the center thickness of the sixth lens, d5 is the center thickness of the fifth lens, F56 is the combined focal length of the fifth lens and the sixth lens, F is the total effective focal length of the optical lens, F2 is the effective focal length of the second lens, F3 is the effective focal length of the third lens F4 is the effective focal length of the fourth lens, F7 is the effective focal length of the seventh lens, TTL is the total optical length of the optical lens, d45 is the spacing distance between the fourth lens and the fifth lens along the optical axis, d47 is the spacing distance between the fourth lens and the seventh lens along the optical axis, d67 is the spacing distance between the sixth lens and the seventh lens along the optical axis, H is the image height corresponding to the maximum field of view of the optical lens, FOV is the maximum field of view of the optical lens, D is the maximum clear aperture of the first side surface of the first lens corresponding to the maximum field of view of the optical lens, TTL is the total optical length of the optical lens, θ is the radian value corresponding to the maximum field of view of the optical lens, and BFL is the optical back focus of the optical lens.

24. The optical lens according to claim 1, characterized in that: The optical lens meets at least one of the following requirements: 3.7509≤F56 / F≤23.5734,4.7817≤|F7 / F|≤585.9319,0.0164≤d45 / TTL≤0.0830,0.0426≤BFL / TTL≤0.1 003,0.0983≤d67 / TTL≤0.1522,-33.8596≤R1 / F≤-2.4233,61.2212°≤(FOV×F) / H≤78.9206°,0.5007rad -1 ≤D / (H θ)≤0.6653rad -1 ,0.0087≤D / H / FOV×1°≤0.0116,-0.6709≤R4 / R5≤0.5993,4.5761≤TTL / F≤5.4870, -3.1222≤R8 / R9≤-1.4532, 0.7522≤F3 / F4≤2.1115, -0.9712≤R2 / R3≤-0.5599, -0.4444≤F4 / F7≤0.0537,1.3716≤(|F7|-|F4|) / d47≤450.6691,-16.0286≤R8 / F≤-3.0987,0.9138≤(d67 BFL) / (d67+BFL)≤1.5611,0.1482≤(d5+d6) / TTL≤0.2233,7.1658≤|F2 / F|≤118.6000,4.8674≤| 1 / 2|≤76.4832,0.2977≤| 1+ 2+ 3| / ≤0.4984, -33.2571≤R1 / (R2+d1)≤-1.8790, in, 1 is the focal length of the first lens, 2 is the focal length of the second lens, 3 is the focal length of the third lens, is the total optical power of the optical lens, R1 is the radius of curvature of the first side surface of the first lens, R2 is the radius of curvature of the second side surface of the first lens, R3 is the radius of curvature of the first side surface of the second lens, R4 is the radius of curvature of the second side surface of the second lens, R5 is the radius of curvature of the first side surface of the third lens, R8 is the radius of curvature of the second side surface of the fourth lens, R9 is the radius of curvature of the first side surface of the fifth lens, d1 is the center thickness of the first lens, d6 is the center thickness of the sixth lens, d5 is the center thickness of the fifth lens, F56 is the combined focal length of the fifth lens and the sixth lens, F is the total effective focal length of the optical lens, F2 is the effective focal length of the second lens, F3 is the effective focal length of the third lens F4 is the effective focal length of the fourth lens, F7 is the effective focal length of the seventh lens, TTL is the total optical length of the optical lens, d45 is the spacing distance between the fourth lens and the fifth lens along the optical axis, d47 is the spacing distance between the fourth lens and the seventh lens along the optical axis, d67 is the spacing distance between the sixth lens and the seventh lens along the optical axis, H is the image height corresponding to the maximum field of view of the optical lens, FOV is the maximum field of view of the optical lens, D is the maximum clear aperture of the first side surface of the first lens corresponding to the maximum field of view of the optical lens, TTL is the total optical length of the optical lens, θ is the radian value corresponding to the maximum field of view of the optical lens, and BFL is the optical back focus of the optical lens.

25. An electronic device, characterized in that: An optical lens comprising any one of claims 1 to 24, and The electronic device further comprises at least one of an imaging element and a light source; The imaging element is used to convert the optical image formed by the optical lens into an electrical signal, and the light emitted by the light source is projected onto the target area after passing through the optical lens to form an image or illuminate the area.

Images