Optical Lens and Electronic Device

Abstract

The present application discloses an optical lens and an electronic device. The optical lens sequentially includes seven lenses with optical power along the optical axis from the first side to the second side: a first lens with negative optical power, the first side surface of which is concave and the second side surface of which is concave; a second lens with positive or negative optical power, the first side surface of which is concave and the second side surface of which is convex; a third lens with positive optical power, the second side surface of which is convex; a fourth lens with positive optical power, the first side surface of which is convex and the second side surface of which is convex; a fifth lens with optical power, the first side surface of which 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.

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 light at a large angle and transmit the light to the second lens, at this time, since the optical power of the second lens is relatively small, the light can be smoothly transitioned to the third lens, and the first lens has a stronger ability to adjust the light relative to the second lens. When the value of | 1 / 2| is greater than 4, the optical lens has a better effect on adjusting the light; making the ratio of the optical 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 optical power between 0.1 and 0.55 can achieve a better ability to adjust the light: on the one hand, more light can be collected and enter the optical system, and on the other hand, after the light exits 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 make the light trend smooth, 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 high resolution and / or low sensitivity.

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

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

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

[0008] In one embodiment, the optical lens satisfies: 2 ≤ F56 / F ≤ 30, where 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, where TTL is the overall optical length of the optical lens, and d45 is the 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°, where 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.

[0011] In one embodiment, the optical lens satisfies: 0 < D / H / FOV × 1° ≤ 0.03, where D is the maximum clear 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 FOV is the maximum field of view angle 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) ≤ 0.8 rad -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 clear 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.

[0013] In one embodiment, the optical lens satisfies: BFL / TTL ≤ 0.12, where TTL is the total optical length of the optical lens and BFL is the back focal length 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, where R1 is the curvature radius of the first side of the first lens, R2 is the curvature radius of the second side of the first lens, d1 is the central 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, where 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, where 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, where F4 is the effective focal length of the fourth lens, F7 is the effective focal length of the seventh lens, and d47 is the axial distance between the fourth lens and the seventh lens.

[0018] In one embodiment, the optical lens satisfies: -50 ≤ R1 / F < 0, where 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, where 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, where d67 is the distance between the sixth lens and the seventh lens along the optical axis, and TTL is the overall optical length of the optical lens.

[0021] In one embodiment, the optical lens satisfies: -1.5 ≤ R2 / R3 ≤ -0.3, where 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, where 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, where 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, where d67 is the distance between the sixth lens and the seventh lens along the optical axis, and BFL is the back focal length of the optical lens.

[0025] In one embodiment, the optical lens satisfies: 0.1 ≤ (d5 + d6) / TTL ≤ 0.3, where d6 is the central thickness of the sixth lens, d5 is the central thickness of the fifth lens, and TTL is the overall 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, 0.45 rad -1 ≤ D / (H θ) ≤ 0.7 rad -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 optical power of the first lens, 2 is the optical power of the second lens, 3 is the optical power of the third lens, is the total optical power of the optical lens, R1 is the curvature radius of the first side of the first lens, R2 is the curvature radius of the second side of the first lens, R3 is the curvature radius of the first side of the second lens, R4 is the curvature radius of the second side of the second lens, R5 is the curvature radius of the first side of the third lens, R8 is the curvature radius of the second side of the fourth lens, R9 is the curvature radius of the first side of the fifth lens, d1 is the central thickness of the first lens, d6 is the central thickness of the sixth lens, d5 is the central 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 optical total length of the optical lens, d45 is the axial distance between the fourth lens and the fifth lens, d47 is the axial distance between the fourth lens and the seventh lens, d67 is the axial distance between the sixth lens and the seventh lens, H is the image height corresponding to the maximum field of view angle of the optical lens, FOV is the maximum field of view angle of the optical lens, D is the maximum clear aperture of the first side of the first lens corresponding to the maximum field of view angle of the optical lens, TTL is the optical total length of the optical lens, θ is the radian value corresponding to the maximum field of view angle of the optical lens, BFL is the optical back focal length 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 optical power of the first lens, 2 is the optical power of the second lens, 3 is the optical power of the third lens, φ is the total optical 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 central thickness of the first lens, d6 is the central thickness of the sixth lens, d5 is the central 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 axial distance between the fourth lens and the fifth lens, d47 is the axial distance between the fourth lens and the seventh lens, d67 is the axial distance between the sixth lens and the seventh lens, H is the image height corresponding to the maximum field of view angle of the optical lens, FOV is the maximum field of view angle of the optical lens, D is the maximum clear aperture of the first side of the first lens corresponding to the maximum field of view angle of the optical lens, TTL is the total optical length of the optical lens, θ is the radian value corresponding to the maximum field of view angle of the optical lens, BFL is the back focal length of the optical lens.

[0028] Another aspect of the present application provides an electronic device, including the optical lens in any of the above embodiments, and the electronic device further 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 the target area through the optical lens to form an image or illuminate the area. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In combination with the drawings, through the detailed description of the following embodiments, other features, objects and advantages of the present application will become more obvious. In the drawings:

[0030] Figure 1 、 Figure 3 、 Figure 5 、 Figure 7 、 Figure 9 、 Figure 11 、 Figure 13 、 Figure 15 、 Figure 17 、 Figure 19 、 Figure 21 、 Figure 23 、 Figure 25 、 Figure 27 、 Figure 29 、 Figure 31 respectively show the schematic structural diagrams of the optical lenses according to Embodiment 1 to Embodiment 16 of the present application; and

[0031] Figure 2 , Figure 4 , Figure 6 , Figure 8 , Figure 10 , Figure 12 , Figure 14 , Figure 16 , Figure 18 , Figure 20 , Figure 22 , Figure 24 , Figure 26 , Figure 28 , Figure 30 , Figure 32 respectively show the axial chromatic aberration diagrams of the optical lenses according to Embodiments 1 to 16 of the present application. Detailed implementation manners

[0032] 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 the exemplary embodiments of the present application, and do not limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0033] It should be noted that in this specification, the expressions such as first, second, and third are only used to distinguish one feature from another feature, and do not represent any limitation on the feature. Therefore, without departing from the teachings of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0034] In the drawings, for the sake of convenience of illustration, the thickness, size, and shape of the lens have been slightly exaggerated. Specifically, the spherical or aspherical shapes shown in the drawings are shown by way of example. That is, the spherical or aspherical shapes are not limited to the spherical or aspherical shapes shown in the drawings. The drawings are only examples and are not drawn strictly to scale.

[0035] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is concave at least in the paraxial region. The judgment of the surface shape in the paraxial region can be made according to the general methods in the art. For example, the concavity and convexity can be judged by the positive and negative values of the R value (R refers to the radius of curvature in the paraxial region). Exemplarily, when the optical lens provided by the present application is used for photography, the surface of each lens closest to the object to be photographed is called the object side surface of the lens, and the surface of each lens closest to the imaging side is called the image side surface of the lens. For the object side surface, when the R value is positive, it is determined to be convex, and when the R value is negative, it is determined to be concave; for the image side surface, when the R value is positive, it is determined to be concave, and when the R value is negative, it is determined to be convex.

[0036] It should be understood that the optical lens provided in this application can be used for photography, projection, and lidar lenses. When the optical lens provided in this application is used as a camera lens or the receiving end lens of lidar, the "first side" involved in this article can refer to the object side, and the "second side" can refer to the image side. Light from the object side can be imaged on the image side, for example. Among them, the camera lens can be, for example, a vehicle-mounted camera, an infrared camera, a drone camera, a night vision camera, a security surveillance camera, etc.; when the optical lens provided in this application is used as a projection lens or the transmitting end lens of radar, the "first side" involved in this article can refer to the object side, and the "second side" can refer to the light source side. A light source can be provided on the second side of the optical lens. The light source can provide light with or without image information. The light from the light source side passes through the optical lens and is projected onto the first side, for example, an image can be formed on the first side or an area can be illuminated.

[0037] It should also be understood that the terms "comprise", "comprising", "have", "include" and / or "including", 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 an expression such as "at least one of..." appears after the list of listed features, it modifies the entire list of listed features rather than individual elements in the list. In addition, when describing the embodiments of this application, the use of "may" means "one or more embodiments of this application". And the term "exemplary" is intended to refer to an example or illustration.

[0038] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It should also be understood that terms (such as those defined in a common dictionary) should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and will not be interpreted in an idealized or overly formalized sense unless expressly so defined herein.

[0039] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will refer to the accompanying drawings and combine with embodiments to detail this application.

[0040] The features, principles and other aspects of this application will be described in detail below.

[0041] In an exemplary embodiment, the optical lens includes, for example, seven lenses with 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. These seven lenses are arranged in sequence along the optical axis from the first side to the second side.

[0042] In an exemplary embodiment, the optical lens provided by the present application can be used as, for example, an in-vehicle lens or a lidar receiving-end lens. At this time, 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 imaging surface of the optical lens can be provided on the second side of the optical lens.

[0043] In an exemplary embodiment, the optical lens provided by the present application can be used as, for example, a projection lens or a lidar transmitting-end lens. At this time, 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 onto the object side, forming an image or illuminating an area on the object side. The light source surface of the optical lens can be provided on the second side of the optical lens.

[0044] In an exemplary embodiment, the optical lens may further include a photosensitive element provided on the second side surface. Optionally, the photosensitive element provided on the second side surface can be a charge-coupled device (CCD) or a complementary metal-oxide-semiconductor element (CMOS).

[0045] In an exemplary embodiment, a diaphragm for restricting the light beam can be provided between the third lens and the fourth lens to further improve the imaging quality of the optical lens. The diaphragm is beneficial for converging the light entering the optical system, balancing the aperture sizes of the lenses in the front and rear optical systems, and while making the light trend gentle, achieving a small FNO of the optical lens. However, it should be noted that the position of the diaphragm disclosed here is only an example and not a limitation; in an alternative embodiment, the diaphragm can also be set at other positions according to actual needs.

[0046] In an exemplary embodiment, the fifth lens and the sixth lens can be glued together to form a glued component to better correct chromatic aberration and thus improve the resolution. Moreover, the tolerance sensitivity of the fifth lens and the sixth lens can be reduced after gluing. And by gluing the fifth lens and the sixth lens, the light passing through the front optical system (such as the first lens to the fourth lens) can be smoothly transitioned to the rear optical system, reducing the overall optical length of the optical lens. And it can fully correct various aberrations of the optical system. It can also improve optical performance such as resolution, optimize distortion, and CRA while ensuring the overall structure of the optical lens is compact. Further, by gluing the fifth lens and the sixth lens, the following technical effects can also be achieved: reducing the distance along the optical axis (such as the air gap) between the fifth lens and the sixth lens to reduce the overall optical length of the optical lens; reducing the assembly components between the two lenses, reducing the processes, and lowering the cost; reducing the tolerance sensitivity problems such as tilt / eccentricity generated during the assembly process of the two lenses; reducing the light loss caused by reflection between the two lenses and enhancing the illuminance; and it can reduce the field curvature and correct the off-axis point aberration of the optical lens.

[0047] In an exemplary embodiment, the first lens may have a negative optical power. Its first side may be concave, and its second side may be concave. The first lens has a negative optical power and has a diverging effect on light. Moreover, its first side is concave, which can quickly diffuse light and reduce the incident angle of light on the rear lens, facilitating the achievement of long focal length and high resolution of the optical lens, reducing sensitivity, and achieving a smaller overall optical length.

[0048] In an exemplary embodiment, the second lens may have a positive optical power. Its first side may be concave, and its second side may be convex. The second lens has a positive optical power, and its first side is concave and the second side is convex, which is conducive to receiving the light passing through the first side of the second lens (i.e., the light passing through the first lens), enabling the light to exit smoothly and facilitating the improvement of aberration. In an exemplary embodiment, the second lens is overall in a meniscus shape, and its first side is concave, which can smoothly receive and further diverge the light; the second side is convex, which is conducive to appropriately converging the light and reducing the overall optical length.

[0049] In an exemplary embodiment, the second lens may have a negative optical power. Its first side may be concave, and its second side may be convex. The second lens has a negative optical power and is a negative lens. Moreover, its first side is concave and the second side is convex, which can enable the light to enter the rear optical system accurately and smoothly, improving 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, improving the resolution. In an exemplary embodiment, the second lens is overall in a meniscus shape, and its first side is concave, which can smoothly receive and further diverge the light; the second side is convex, which is conducive to appropriately converging the light and reducing the overall optical length.

[0050] In an exemplary embodiment, the third lens may have a positive optical power. Its first side may be concave, and its second side may be convex. The third lens has a positive optical power, and its first side is concave and the second side is convex, which can smoothly receive and converge the diverging light, reducing the aperture at the rear end. In an exemplary embodiment, the overall shape of the third lens may be gentle to further smoothly receive and converge the diverging light, reducing the aperture at the rear end.

[0051] In an exemplary embodiment, the third lens may have a positive optical power. Its first side may be convex, and its second side may be convex. The third lens has a positive optical power, and both its first side and second side are convex, which can moderately converge the diverging light transmitted from the front, making the light transition smooth, reducing aberration, facilitating the achievement of high resolution, and improving the resolution ability of the optical system.

[0052] In an exemplary embodiment, the fourth lens may have a positive optical power. Its first side may be convex and its second side may be convex. In an exemplary embodiment, the first sides and the second sides of the third lens and the fourth lens are both convex. Cooperating with the fourth lens having a positive optical power, the light can be continuously converged to reduce sensitivity and moderately converge the diverging light in the front, so that the light transition is smooth, the aberration is reduced, which is conducive to achieving high resolution and improving the resolution ability of the optical system.

[0053] In an exemplary embodiment, the fifth lens may have a positive optical power. Its first side may be convex and its second side may be convex. The fifth lens has a positive optical power, and its first side and second side are both convex, which can moderately converge the diverging light transmitted from the front, make the light transition smooth, reduce the aberration, which is conducive to achieving high resolution and improving the resolution ability of the optical system.

[0054] In an exemplary embodiment, the fifth lens may have a negative optical power. Its first side may be convex and its second side may be concave. The fifth lens has a negative optical power, and its first side is convex and its second side is concave, which can reduce the deflection degree of the light emitted from the front lens, which is conducive to making the light transition smoothly and reducing the light energy loss at the interface, and then can improve the relative illumination and reduce the system sensitivity. In an exemplary embodiment, the overall shape of the fifth lens may be relatively flat, further reducing the deflection degree of the light emitted from the front lens, which is conducive to making the light transition smoothly and reducing the light energy loss at the interface, and then can improve the relative illumination and reduce the system sensitivity.

[0055] In an exemplary embodiment, the sixth lens may have a positive optical power. Its first side may be convex and its second side may be convex. The sixth lens has a positive optical power, and its first side and second side are both convex, which can moderately converge the diverging light transmitted from the front, make the light transition smooth, reduce the aberration, which is conducive to achieving miniaturization at the rear end and high resolution, and improving the resolution ability of the optical system.

[0056] In an exemplary embodiment, the sixth lens may have a negative optical power. Its first side may be concave and its second side may be convex. The sixth lens has a negative optical power, and its first side is concave and its second side is convex, which is conducive to receiving the 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 the aberration.

[0057] In an exemplary embodiment, the sixth lens may have a negative optical power. Its first side may be concave and its second side may be concave. The sixth lens has a negative optical power, and its first side and second side are both concave, which is conducive to receiving the light passing through the fifth lens and has a diverging effect on the light, and can increase the light flux.

[0058] In an exemplary embodiment, the seventh lens may have a positive focal power, its first side may be convex, and its second side may be convex. The seventh lens has a positive focal power and converges light. In the exemplary embodiment, the sixth lens has a negative focal power. When paired with the seventh lens having a positive focal power, it can effectively correct the aberration of the system. The second side of the seventh lens is convex, which is beneficial for converging light and can control the CRA to be relatively small, achieving optical performances such as improving image quality and optimizing distortion.

[0059] In an exemplary embodiment, the seventh lens may have a positive focal power, its first side may be convex, and its second side may be concave. The seventh lens has a positive focal power, which is beneficial for appropriately converging light, and then can make the light trend stable.

[0060] In an exemplary embodiment, the seventh lens may have a negative focal power, its first side may be convex, and its second side may be concave. The seventh lens has a negative focal power and diverges light. Moreover, its first side is convex, which can make the light incident angle relatively small, facilitating collecting more light into the optical system and achieving high throughput.

[0061] In an exemplary embodiment, the seventh lens may have a negative focal power, its first side may be concave, and its second side may be concave. The seventh lens has a negative focal power, and both its first side and second side are concave, which is beneficial for receiving the light passing through the sixth lens and diverging the light, and can improve the light flux.

[0062] Figure 1 The structural schematic diagram of an optical lens according to an embodiment of the present application is shown. The optical lens provided by the present application can be used as, for example, a vehicle-mounted lens or a lidar receiving-end lens. At this time, Figure 1 IMA represents the imaging surface. The light from the object sequentially passes through each surface S1 to S16 and finally forms an image on the imaging surface provided on the second side, where an image sensing chip is arranged. It should be understood that the optical lens provided by the present application can also be used as, for example, a projection lens or a lidar transmitting-end lens. At this time, Figure 1 IMA represents the light source surface. The light from the light source surface sequentially passes through each surface S16 to S1 and finally projects to the first side, and forms an image or illuminates an area on the first side.

[0063] In the present application, 1 is the focal power of the first lens, 2 is the focal power of the second lens, 3 is the focal power of the third lens, φ is the total optical 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 central thickness of the first lens, d6 is the central thickness of the sixth lens, d5 is the central 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 overall 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 angle of the optical lens, FOV is the maximum field of view angle of the optical lens, D is the maximum clear aperture of the first side of the first lens corresponding to the maximum field of view angle of the optical lens, TTL is the overall optical length of the optical lens, θ is the radian value corresponding to the maximum field of view angle of the optical lens, BFL is the back focal length of the optical lens. The above meanings will not be elaborated hereinafter.

[0064] 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 of the first lens a concave surface, the light can be quickly diffused, and the light incident angle of the rear lens can be reduced, which is beneficial to achieving the long focal length and high resolution of the optical lens, and can reduce the sensitivity, and achieve a smaller aperture and overall optical length. Preferably, the optical lens may further satisfy: -40 ≤ R1 / F ≤ -1, which is more beneficial 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 beneficial to achieving a small aperture of the optical lens.

[0065] 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 distance between the fourth lens and the fifth lens along the optical axis (such as an air gap) is made smaller, which is beneficial to narrowing the light trend at the rear end, narrowing the rear aperture, and realizing the miniaturization of the optical lens. Preferably, the optical lens may further satisfy: 0.01 ≤ d45 / TTL ≤ 0.1, which is more beneficial 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 beneficial to realizing the miniaturization of the optical lens.

[0066] In an exemplary embodiment, the optical lens may satisfy: -1 ≤ R4 / R5 ≤ 0.9. By making the optical lens satisfy the above conditional expression and making the second surface of the second lens opposite to the first surface of the third lens in surface shape, the converging light pressure can be alleviated 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 a 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 a low sensitivity of the optical lens.

[0067] 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 component. By making the optical lens satisfy the above conditional expression, the spacing distance between the glued component and the seventh lens along the optical axis is small, and the ghost image between the glued component and the seventh lens can be effectively reduced. Preferably, the optical lens may further satisfy: 0.08 ≤ d67 / TTL ≤ 0.18, which is more conducive to achieving a weak ghost image of the optical lens. More preferably, the optical lens may further satisfy: 0.0983 ≤ d67 / TTL ≤ 0.1522, which is more conducive to achieving a weak ghost image of the optical lens.

[0068] 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 to form a glued component. By making the optical lens satisfy the above conditional expression and controlling the combined focal length of the glued component, the trend of the light entering the glued component can be effectively controlled, the aberration caused by large-angle light can be reduced, the resolution can be improved, and 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 a 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 a high resolution of the optical lens.

[0069] In an exemplary embodiment, the optical lens may satisfy: |F7 / F| ≥ 3. By making the optical lens satisfy the above conditional expression and controlling the effective focal length of the seventh lens to be relatively large, it is beneficial to make the light transition smoothly to the imaging surface, and thus it is beneficial to achieve low sensitivity and large-angle imaging. Preferably, the optical lens may further satisfy: 3.5 ≤ |F7 / F| ≤ 600, which is more conducive to achieving a 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 a low sensitivity of the optical lens.

[0070] In an exemplary embodiment, the optical lens may satisfy: BFL / TTL ≤ 0.12. By making the optical lens satisfy the above conditional expression, that is, setting a shorter back focal length, it is beneficial to achieve miniaturization of the overall optical length, quickly focus light onto the imaging system, avoid light scattering, and improve the imaging quality. Preferably, the optical lens may further satisfy: 0.03 ≤ BFL / TTL ≤ 0.11, which is more beneficial to achieve miniaturization of the optical lens. More preferably, the optical lens may further satisfy: 0.0426 ≤ BFL / TTL ≤ 0.1003, which is more beneficial to achieve miniaturization of the optical lens.

[0071] In an exemplary embodiment, the optical lens may satisfy: 4 ≤ TTL / F ≤ 6. By making the optical lens satisfy the above conditional expression, it is beneficial to achieve miniaturization of the optical lens. Preferably, the optical lens may further satisfy: 4.2 ≤ TTL / F ≤ 5.8, which is more beneficial to achieve miniaturization of the optical lens. More preferably, the optical lens may further satisfy: 4.5761 ≤ TTL / F ≤ 5.4870, which is more beneficial to achieve miniaturization of the optical lens.

[0072] In an exemplary embodiment, the optical lens may satisfy: 0.3 ≤ F3 / F4 ≤ 5. By making the optical lens satisfy the above conditional expression and having at least one lens between the third lens and the fourth lens be a biconvex lens with both the first side and the second side being convex, the light trend of the rear-end optical system can be depressed, and the sensitivity can be effectively reduced. Preferably, the optical lens may further satisfy: 0.5 ≤ F3 / F4 ≤ 2.5, which is more beneficial to achieve a low sensitivity of the optical lens. More preferably, the optical lens may further satisfy: 0.7522 ≤ F3 / F4 ≤ 2.1115, which is more beneficial to achieve a low sensitivity of the optical lens.

[0073] 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 expression, the long focal length, large angle, and high edge resolution of the optical lens can be satisfied simultaneously. Preferably, the optical lens may further satisfy: 0.0087 ≤ D / H / FOV × 1° ≤ 0.0116, which is more beneficial to achieve the long focal length, large angle, and high edge resolution of the optical lens.

[0074] In an exemplary embodiment, the optical lens may satisfy: -1.5 ≤ R2 / R3 ≤ -0.3. By making the optical lens satisfy the above conditional expression, controlling the radii of curvature of the adjacent two side surfaces of the first lens and the second lens is conducive to the smooth transition of light rays and reduces the system sensitivity. Preferably, the optical lens may further satisfy: -1 ≤ R2 / R3 ≤ -0.4, which is more conducive to achieving a 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 a low sensitivity of the optical lens.

[0075] In an exemplary embodiment, the optical lens may satisfy: -1 ≤ F4 / F7 ≤ 0.1. By making the optical lens satisfy the above conditional expression, a small FNO can be achieved, which is conducive to increasing the light transmission amount and can make the entrance pupil diameter large, thereby helping to improve the relative illumination. Preferably, the optical lens may further satisfy: -0.7 ≤ F4 / F7 ≤ 0.1, which is more conducive to achieving a 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 a low sensitivity of the optical lens.

[0076] In an exemplary embodiment, the optical lens may satisfy: (|F7| - |F4|) / d47 ≥ 1. By making the optical lens satisfy the above conditional expression, the effective focal lengths of the fourth lens and the seventh lens are reasonably allocated, and the distance between the fourth lens and the seventh lens along the optical axis is controlled, so that the light ray trend is smooth and the system sensitivity is reduced. Preferably, the optical lens may further satisfy: 1 ≤ (|F7| - |F4|) / d47 ≤ 500, which is more conducive to achieving a 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 a low sensitivity of the optical lens.

[0077] In an exemplary embodiment, the optical lens may satisfy: (d67 BFL) / (d67 + BFL) ≤ 2. By making the optical lens satisfy the above conditional expression, it helps to balance the ratio between the optical back focal length of the optical system and the distance between the fifth lens and the sixth lens along the optical axis, and thus can improve the assembly yield. Preferably, the optical lens may 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 may further satisfy: 0.9138 ≤ (d67 BFL) / (d67 + BFL) ≤ 1.5611, which is more conducive to achieving a high assembly yield of the optical lens.

[0078] 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 cemented to form a cemented component. By making the optical lens satisfy the above conditional expression, appropriately increasing the center thickness of the lenses in the cemented component within a certain range is beneficial to enhancing the light control ability of the optical lens, making the light trend smoother, and reducing chromatic aberration and sensitivity at the same time. Preferably, the optical lens may further satisfy: 0.13 ≤ (d5 + d6) / TTL ≤ 0.25, which is more beneficial 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 beneficial to achieving low sensitivity of the optical lens.

[0079] In an exemplary embodiment, the optical lens may satisfy: 55° ≤ (FOV × F) / H ≤ 85°. By making the optical lens satisfy the above conditional expression, the long focal length, large angle, and high edge resolution of the optical lens can be satisfied simultaneously. Preferably, the optical lens may further satisfy: 58° ≤ (FOV × F) / H ≤ 83°, which is more beneficial 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 beneficial to achieving a large field of view of the optical lens.

[0080] In an exemplary embodiment, the optical lens may satisfy: -5 ≤ R8 / R9 ≤ -1. By making the optical lens satisfy the above conditional expression and making the surface types of the second side of the fourth lens and the first side of the fifth lens opposite, it is beneficial to relieve the pressure of the 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 beneficial 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 beneficial to achieving low sensitivity of the optical lens.

[0081] In an exemplary embodiment, the optical lens may satisfy: -25 ≤ R8 / F ≤ -2. By making the optical lens satisfy the above conditional expression and controlling the radius of curvature of the second side of the fourth lens, the light emerging from the fourth lens can enter the fifth lens in a smooth trend, reducing the system sensitivity. Preferably, the optical lens may further satisfy: -20 ≤ R8 / F ≤ -2, which is more beneficial 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 beneficial to achieving low sensitivity of the optical lens.

[0082] In an exemplary embodiment, the optical lens may satisfy: 0.3 rad -1 ≤ D / (H θ) ≤ 0.8 rad -1 。By making the optical lens satisfy the above conditional formula, on the premise that the maximum field of view angle and the corresponding image height of the optical lens are certain, the front aperture can be made small, and thus the miniaturization of the optical lens can be achieved. Preferably, the optical lens can further satisfy: 0.45 rad -1 ≤ D / (H θ) ≤ 0.7 rad -1 , which is more conducive to achieving a small aperture of the optical lens. More preferably, the optical lens can further satisfy: 0.5007 rad -1 ≤ D / (H θ) ≤ 0.6653 rad -1 , which is more conducive to achieving a small aperture of the optical lens.

[0083] In an exemplary embodiment, the optical lens can 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 relatively large, which helps to make the light trend gentle, and thus the stability of the optical system is high and the sensitivity of the optical system can be reduced. Preferably, the optical lens can further satisfy: 7 ≤ |F2 / F| ≤ 120, which is more conducive to achieving a low sensitivity of the optical lens. More preferably, the optical lens can further satisfy: 7.1658 ≤ |F2 / F| ≤ 118.6000, which is more conducive to achieving a low sensitivity of the optical lens.

[0084] In an exemplary embodiment, the optical lens can satisfy: 4 ≤ | 1 / 2| ≤ 100. By making the optical lens satisfy the above conditional formula, the first lens can collect light at large angles and transmit the light to the second lens. At this time, since the optical power of the second lens is relatively small, the light can be smoothly transitioned to the third lens. And the first lens has a stronger ability to adjust light relative to the second lens, and the adjustment effect of the optical lens on light is better when the value of | 1 / 2| is greater than 4. Preferably, the optical lens can further satisfy: 4.5 ≤ | 1 / 2| ≤ 80, which is more conducive to achieving a 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 a high resolution of the optical lens.

[0085] In an exemplary embodiment, the optical lens can satisfy: 0.1 ≤ | 1 + 2 + 3| / ≤0.55. By making the optical lens satisfy the above conditional formula, even if the ratio of the optical 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 optical power is between 0.1 and 0.55, a better light adjustment ability can be achieved. That is, on the one hand, more light can be collected and enter the optical system; on the other hand, after the light exits 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 satisfy: 0.2977 ≤ | 1 + 2 + 3| / ≤0.4984, which is more conducive to achieving high resolution of the optical lens.

[0086] In an exemplary embodiment, the optical lens can satisfy: -40 ≤ R1 / (R2 + d1) ≤ -1. By making the optical lens satisfy the above conditional formula, it is beneficial to reduce the front aperture of the optical lens, thereby reducing the volume of the optical lens, which is beneficial to achieving miniaturization and reducing costs. Preferably, the optical lens can further satisfy: -35 ≤ R1 / (R2 + d1) ≤ -1.5, which is more conducive to achieving miniaturization of the optical lens. More preferably, the optical lens can further satisfy: -33.2571 ≤ R1 / (R2 + d1) ≤ -1.8790, which is more conducive to achieving miniaturization of the optical lens.

[0087] In an exemplary embodiment, at least one of the first lens to the seventh lens can be a spherical lens or an aspherical lens. In an exemplary embodiment, the second lens and / or the seventh lens can be an aspherical lens. The present application does not specifically limit the specific number of spherical lenses and aspherical lenses. When focusing on reflecting the imaging quality, the number of aspherical lenses can be increased, and even all lenses can be aspherical lenses. The characteristic of an aspherical lens is that the curvature continuously changes from the center to the periphery of the lens. Different from a spherical lens with a constant curvature from the center to the periphery of the lens, an aspherical lens has better curvature radius characteristics and has the advantages of improving distortion aberration and astigmatism aberration. After using an aspherical lens, it is possible to eliminate the aberration that appears during imaging as much as possible, thereby improving the imaging quality of the lens. The setting of the aspherical lens helps to correct the system aberration and improve the resolution ability.

[0088] In an exemplary embodiment, the first lens to the seventh lens may be glass lenses or plastic lenses. The present application does not specifically limit the specific number of glass lenses and plastic lenses. An optical lens made of glass can suppress the shift of the back focal length of the optical lens with temperature changes, so as to improve the system stability. At the same time, using glass material can avoid problems such as blurred imaging of the lens and affecting the normal use of the lens caused by high and low temperature changes in the use environment. Specifically, when focusing on temperature performance and resolution quality, the first lens to the seventh lens may all be glass aspherical lenses. In application scenarios with lower requirements for temperature stability, the first lens to the seventh lens in the optical lens may also all be made of plastic. Making an optical lens with plastic can effectively reduce the manufacturing cost. Of course, the first lens to the seventh lens in the optical lens may also be made of a combination of plastic and glass.

[0089] In an exemplary embodiment, the first side and / or the second side of the seventh lens may have an anastigmatism, which is beneficial to better correct the aberration of the outgoing light rays in different fields of view.

[0090] According to the above embodiments of the present application, through reasonable settings of parameters such as the shape and optical power of each lens, the optical lens has at least one beneficial effect such as low sensitivity, weak ghost images, high light flux, large field of view, high assembly yield, short back focal length, small aperture, high resolution, miniaturization, small volume, long focal length, and small FNO.

[0091] Those skilled in the art should understand that the total optical length TTL of the optical lens used above refers to the axial distance from the first side of the first lens to the imaging surface or the light source surface; the back focal length BFL of the optical lens refers to the axial distance from the second side of the seventh lens to the imaging surface or the light source surface; the maximum field of view angle FOV of the optical lens is related to the image height H, and it refers to the field of view angle corresponding to the image height H.

[0092] However, those skilled in the art should understand that without departing from the technical solutions 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 embodiments with reference to the drawings.

[0093] Embodiment 1

[0094] The following refers to Figure 1 describes the optical lens according to Embodiment 1 of the present application. Figure 1 FIG. shows a schematic structural diagram of the optical lens according to Embodiment 1 of the present application.

[0095] As Figure 1As shown, the optical lens sequentially 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 along the optical axis from the first side to the second side.

[0096] The first lens L1 has a negative focal power, its first side S1 is concave, and its second side S2 is concave.

[0097] The second lens L2 has a positive focal power, its first side S4 is concave, and its second side S5 is convex.

[0098] The third lens L3 has a positive focal power, its first side S6 is concave, and its second side S7 is convex.

[0099] The fourth lens L4 has a positive focal power, its first side S8 is convex, and its second side S9 is concave.

[0100] The fifth lens L5 has a negative focal power, its first side S10 is convex, and its second side S11 is concave.

[0101] The sixth lens L6 has a positive focal power, its first side S11 is convex, and its second side S12 is convex.

[0102] The seventh lens L7 has a negative focal power, its first side S13 is convex, and its second side S14 is concave.

[0103] Among them, the first side S13 and the second side S14 of the seventh lens L7 may have an aspherical surface, and the fifth lens L5 and the sixth lens L6 are cemented to form a cemented part.

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

[0105] Optionally, the optical lens may further include a protective glass having a first side S15 and a second side S16.

[0106] The optical lens provided in this application can be used as, for example, a vehicle-mounted lens or a lidar receiving-end lens. At this time, Figure 1 where IMA represents the imaging surface, the light from the object sequentially passes through the surfaces S1 to S16 and finally forms an image on the imaging surface IMA disposed on the second side. Among them, an image sensor chip is disposed at the imaging surface. It should be understood that the optical lens provided in this application can also be used as, for example, a projection lens or a lidar transmitting-end lens. At this time, Figure 1 where IMA represents the light source surface, the light from the light source surface sequentially passes through the surfaces S16 to S1 and finally projects to the first side and forms an image or an illuminated area on the first side.

[0107] Table 1 shows the radius of curvature R, thickness / distance, refractive index Nd, and Abbe number Vd of each lens of the optical lens of Example 1.

[0108] Table 1

[0109]

[0110] In this embodiment, the first side S3 and the second side S4 of the second lens L2, and the first side S13 and the second side S14 of the seventh lens L7 may be aspherical surfaces. The surface profiles of the respective aspherical lenses can be defined by, but are not limited to, the following aspherical formula:

[0111] (1)

[0112] Where x is the sagitta, the distance from the vertex of the aspherical surface when the aspherical surface is along the optical axis at a position with a height of h; c is the paraxial curvature of the aspherical surface, c = 1 / R (that is, the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient; Ai is the correction coefficient of the i-th order of the aspherical surface. Table 2 below gives the conic coefficients k and the high-order term coefficients A4, A6, A8, A10 that can be used for the respective aspherical surfaces S3, S4, S13, S14 in Example 1.

[0113] Table 2

[0114]

[0115] Figure 2 Shows the axial chromatic aberration diagram of the optical lens of Example 1. The reason for the generation of axial chromatic aberration is that the positions of the images formed by the optical lens for light of each wavelength are different, so that the focal planes of the images of light of different colors cannot coincide when finally imaging, and the polychromatic light forms dispersion. Taking Figure 2 the axial chromatic aberration diagram of the optical lens shown as an example, the colored lines therein represent the chromatic aberration effects of different wavelengths, and the more concentrated the lines are, the better the chromatic aberration. As Figure 2 shown, the chromatic aberration range of the optical lens of Example 1 is within the ideal range. Therefore, the optical lens provided in Example 1 of the present application has good imaging quality.

[0116] Example 2

[0117] The following Figure 3 describes the optical lens according to Embodiment 2 of the present application. In this embodiment, for the sake of simplicity, some descriptions similar to those in Example 1 will be omitted. Figure 3 Shows a schematic structural diagram of the optical lens according to Embodiment 2 of the present application.

[0118] As Figure 3As shown, the optical lens sequentially 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 along the optical axis from the first side to the second side. The positive and negative of the optical power of each lens of the optical lens in Embodiment 2 are the same as those in Embodiment 1. Among them, the first side surface S13 and the second side surface S14 of the seventh lens L7 have anastigmatism.

[0119] Table 3 shows the parameters of each lens of the optical lens in Embodiment 2. The surface type of each lens can be obtained according to the following table and will not be elaborated. Table 4 shows the parameters of the aspherical lenses that can be used in the embodiments. Among them, each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0120] Table 3

[0121]

[0122] Table 4

[0123]

[0124] Figure 4 shows the axial chromatic aberration diagram of the optical lens in Embodiment 2. As Figure 4 shown, the optical lens provided in Embodiment 2 of the present application has good imaging quality.

[0125] Embodiment 3

[0126] The following refers to Figure 5 to describe the optical lens according to Embodiment 3 of the present application. In this embodiment, for the sake of simplicity, some descriptions similar to those in Embodiment 1 will be omitted. Figure 5 shows a schematic structural diagram of the optical lens according to Embodiment 3 of the present application.

[0127] As Figure 5 shown, the optical lens sequentially 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 along the optical axis from the first side to the second side. The difference in the positive and negative of the optical power of each lens of the optical lens in Embodiment 3 from that in Embodiment 1 is only that the second lens L2 in Embodiment 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 anastigmatism.

[0128] Table 5 shows the parameters of each lens of the optical lens in Embodiment 3. The surface type of each lens can be obtained according to the following table and will not be elaborated. Table 6 shows the parameters of the aspherical lenses that can be used in the embodiments. Among them, each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0129] Table 5

[0130]

[0131] Table 6

[0132]

[0133] Figure 6 shows the axial chromatic aberration diagram of the optical lens of Example 3. As Figure 6 shown, the optical lens provided in Example 3 of the present application has good imaging quality.

[0134] Example 4

[0135] The following refers to Figure 7 to describe the optical lens according to Example 4 of the present application. In this embodiment, for the sake of brevity, some descriptions similar to those in Example 1 will be omitted. Figure 7 shows a schematic structural diagram of the optical lens according to Example 4 of the present application.

[0136] As Figure 7 shown, the optical lens sequentially 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 along the optical axis from the first side to the second side. The difference in the positive and negative of the optical power of each lens of the optical lens in Example 4 from that in Example 1 is only that the second lens L2 in 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 an anti-curve.

[0137] Table 7 shows the parameters of each lens of the optical lens in Example 4. The surface type of each lens can be obtained from the following table and will not be elaborated. Table 8 shows the parameters of the aspherical lenses that can be used in the examples. Among them, each aspherical surface type can be defined by the formula (1) given in Example 1 above.

[0138] Table 7

[0139]

[0140] Table 8

[0141]

[0142] Figure 8 shows the axial chromatic aberration diagram of the optical lens of Example 4. As Figure 8 shown, the optical lens provided in Example 4 of the present application has good imaging quality.

[0143] Example 5

[0144] The following refers to Figure 9Describes an optical lens according to Embodiment 5 of the present application. In this embodiment, for the sake of brevity, some descriptions similar to those in Embodiment 1 will be omitted. Figure 9 Shows a schematic structural diagram of an optical lens according to Embodiment 5 of the present application.

[0145] As Figure 9 Shown, the optical lens sequentially 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 along the optical axis from the first side to the second side. The difference in the positive and negative of the optical power of each lens of the optical lens in Embodiment 5 from that in Embodiment 1 is only that the second lens L2 in Embodiment 5 has a negative optical power. Among them, the second side surface S14 of the seventh lens L7 has an anastigmatism.

[0146] Table 9 shows the parameters of each lens of the optical lens in Embodiment 5. The surface type of each lens can be obtained according to the following table and will not be elaborated. Table 10 shows the parameters of the aspherical lenses that can be used in the embodiment. Among them, each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0147] Table 9

[0148]

[0149] Table 10

[0150]

[0151] Figure 10 Shows the axial chromatic aberration diagram of the optical lens in Embodiment 5. As Figure 10 Shown, the optical lens provided in Embodiment 5 of the present application has good imaging quality.

[0152] Embodiment 6

[0153] The following refers to Figure 11 Describes an optical lens according to Embodiment 6 of the present application. In this embodiment, for the sake of brevity, some descriptions similar to those in Embodiment 1 will be omitted. Figure 11 Shows a schematic structural diagram of an optical lens according to Embodiment 6 of the present application.

[0154] As Figure 11 Shown, the optical lens sequentially 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 along the optical axis from the first side to the second side. The difference in the positive and negative of the optical power of each lens of the optical lens in Embodiment 6 from that in Embodiment 1 is only that the second lens L2 in Embodiment 6 has a negative optical power. Among them, the second side surface S14 of the seventh lens L7 has an anastigmatism.

[0155] Table 11 shows the parameters of each lens of the optical lens of Example 6. The surface types of each lens can be obtained from the following table and will not be elaborated. Table 12 shows the parameters of the aspherical lenses that can be used in the examples. Among them, each aspherical surface type can be defined by formula (1) given in Example 1 above.

[0156] Table 11

[0157]

[0158] Table 12

[0159]

[0160] Figure 12 shows the axial chromatic aberration diagram of the optical lens of Example 6. As Figure 12 shown, the optical lens provided in Example 6 of the present application has good imaging quality.

[0161] Example 7

[0162] The following refers to Figure 13 to describe the optical lens according to Example 7 of the present application. In this embodiment, for the sake of simplicity, some descriptions similar to those in Example 1 will be omitted. Figure 13 shows the schematic structural diagram of the optical lens according to Example 7 of the present application.

[0163] As Figure 13 shown, the optical lens sequentially 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 along the optical axis from the first side to the second side. The difference in the positive and negative of the optical power of each lens of the optical lens in Example 7 from that in Example 1 is only that the second lens L2 in Example 7 has a negative optical power. Among them, the second surface S14 of the seventh lens L7 has an anti-curve.

[0164] Table 13 shows the parameters of each lens of the optical lens of Example 7. The surface types of each lens can be obtained from the following table and will not be elaborated. Table 14 shows the parameters of the aspherical lenses that can be used in the examples. Among them, each aspherical surface type can be defined by formula (1) given in Example 1 above.

[0165] Table 13

[0166]

[0167] Table 14

[0168]

[0169] Figure 14 shows the axial chromatic aberration diagram of the optical lens of Example 7. As Figure 14As shown, the optical lens provided in Embodiment 7 of the present application has good imaging quality.

[0170] Embodiment 8

[0171] The following refers to Figure 15 to describe the optical lens according to Embodiment 8 of the present application. In this embodiment, for the sake of brevity, some descriptions similar to those in Embodiment 1 will be omitted. Figure 15 Fig. shows a schematic structural diagram of the optical lens according to Embodiment 8 of the present application.

[0172] As Figure 15 shown, the optical lens sequentially 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 along the optical axis from the first side to the second side. The difference in the positive and negative of the optical power of each lens of the optical lens in Embodiment 8 from that in Embodiment 1 is only that the second lens L2 in Embodiment 8 has a negative optical power. Among them, the second side surface S14 of the seventh lens L7 has an anti-curve.

[0173] Table 15 shows the parameters of each lens of the optical lens in Embodiment 8. The surface type of each lens can be obtained according to the following table and will not be elaborated. Table 16 shows the parameters of the aspherical lenses that can be used in the embodiment. Among them, each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0174] Table 15

[0175]

[0176] Table 16

[0177]

[0178] Figure 16 Fig. shows the axial chromatic aberration diagram of the optical lens in Embodiment 8. As Figure 16 shown, the optical lens provided in Embodiment 8 of the present application has good imaging quality.

[0179] Embodiment 9

[0180] The following refers to Figure 17 to describe the optical lens according to Embodiment 9 of the present application. In this embodiment, for the sake of brevity, some descriptions similar to those in Embodiment 1 will be omitted. Figure 17 Fig. shows a schematic structural diagram of the optical lens according to Embodiment 9 of the present application.

[0181] As Figure 17As shown, the optical lens sequentially 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 along the optical axis from the first side to the second side. The difference in the positive and negative of the optical power of each lens of the optical lens of Embodiment 9 from that of Embodiment 1 is only that the second lens L2 of Embodiment 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 an aspherical curvature.

[0182] Table 17 shows the parameters of each lens of the optical lens of Embodiment 9. The surface type of each lens can be obtained from the following table and will not be elaborated here. Table 18 shows the parameters of the aspherical lenses that can be used in the embodiments. Among them, each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0183] Table 17

[0184]

[0185] Table 18

[0186]

[0187] Figure 18 shows the axial chromatic aberration diagram of the optical lens of Embodiment 9. As Figure 18 shown, the optical lens provided in Embodiment 9 of the present application has good imaging quality.

[0188] Embodiment 10

[0189] The following refers to Figure 19 to describe the optical lens according to Embodiment 10 of the present application. In this embodiment, for the sake of brevity, some descriptions similar to those in Embodiment 1 will be omitted. Figure 19 shows a schematic structural diagram of the optical lens according to Embodiment 10 of the present application.

[0190] As Figure 19 shown, the optical lens sequentially 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 along the optical axis from the first side to the second side. The difference in the positive and negative of the optical power of each lens of the optical lens of Embodiment 10 from that of Embodiment 1 is only that the second lens L2 of Embodiment 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 an aspherical curvature.

[0191] Table 19 shows the parameters of each lens of the optical lens of Example 10. The surface types of each lens can be obtained from the following table and will not be elaborated. Table 20 shows the parameters of the aspherical lenses that can be used in the examples. Among them, each aspherical surface type can be defined by formula (1) given in Example 1 above.

[0192] Table 19

[0193]

[0194] Table 20

[0195]

[0196] Figure 20 shows the axial chromatic aberration diagram of the optical lens of Example 10. As Figure 20 shown, the optical lens provided in Example 10 of the present application has good imaging quality.

[0197] Example 11

[0198] The following refers to Figure 21 to describe the optical lens according to Example 11 of the present application. In this embodiment, for the sake of simplicity, some descriptions similar to those in Example 1 will be omitted. Figure 21 shows a schematic structural diagram of the optical lens according to Example 11 of the present application.

[0199] As Figure 21 shown, the optical lens sequentially 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 along the optical axis from the first side to the second side. The difference in the positive and negative of the optical power of each lens of the optical lens in Example 11 from that in Example 1 is only that the second lens L2 in Example 11 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 first side surface S13 and the second side surface S14 of the seventh lens L7 have an anti-curve.

[0200] Table 21 shows the parameters of each lens of the optical lens of Example 11. The surface types of each lens can be obtained from the following table and will not be elaborated. Table 22 shows the parameters of the aspherical lenses that can be used in the examples. Among them, each aspherical surface type can be defined by formula (1) given in Example 1 above.

[0201] Table 21

[0202]

[0203] Table 22

[0204]

[0205] Figure 22 Shows the axial chromatic aberration diagram of the optical lens of Embodiment 11. As Figure 22 shown, the optical lens provided in Embodiment 11 of the present application has good imaging quality.

[0206] Embodiment 12

[0207] The following refers to Figure 23 to describe the optical lens according to Embodiment 12 of the present application. In this embodiment, for the sake of simplicity, some descriptions similar to those in Embodiment 1 will be omitted. Figure 23 Shows a schematic structural diagram of the optical lens according to Embodiment 12 of the present application.

[0208] As Figure 23 shown, the optical lens sequentially 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 along the optical axis from the first side to the second side. The difference in the positive and negative optical powers of each lens of the optical lens in Embodiment 12 from that in Embodiment 1 is only that the second lens L2 in Embodiment 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 an anti-curve.

[0209] Table 23 shows the parameters of each lens of the optical lens in Embodiment 12. The surface type of each lens can be obtained from the following table and will not be elaborated. Table 24 shows the parameters of the aspherical lenses that can be used in the embodiment. Among them, each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0210] Table 23

[0211]

[0212] Table 24

[0213]

[0214] Figure 24 Shows the axial chromatic aberration diagram of the optical lens of Embodiment 12. As Figure 24 shown, the optical lens provided in Embodiment 12 of the present application has good imaging quality.

[0215] Embodiment 13

[0216] The following refers to Figure 25 to describe the optical lens according to Embodiment 13 of the present application. In this embodiment, for the sake of simplicity, some descriptions similar to those in Embodiment 1 will be omitted. Figure 25 Shows a schematic structural diagram of the optical lens according to Embodiment 13 of the present application.

[0217] As Figure 25 shown, the optical lens sequentially 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 along the optical axis from the first side to the second side. The difference in the positive and negative of the optical power of each lens of the optical lens of Embodiment 13 from that of Embodiment 1 is only that the second lens L2 of Embodiment 13 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 first side surface S13 and the second side surface S14 of the seventh lens L7 are anastigmatic.

[0218] Table 25 shows the parameters of each lens of the optical lens of Embodiment 13. The surface type of each lens can be obtained according to the following table and will not be elaborated. Table 26 shows the parameters of the aspherical lenses that can be used in the embodiments. Among them, each aspherical surface type can be defined by formula (1) given in Embodiment 1 above.

[0219] Table 25

[0220]

[0221] Table 26

[0222]

[0223] Figure 26 shows the axial chromatic aberration diagram of the optical lens of Embodiment 13. As Figure 26 shown, the optical lens provided in Embodiment 13 of the present application has good imaging quality.

[0224] Embodiment 14

[0225] The following refers to Figure 27 to describe the optical lens according to Embodiment 14 of the present application. In this embodiment, for the sake of simplicity, some descriptions similar to those in Embodiment 1 will be omitted. Figure 27 shows a schematic structural diagram of the optical lens according to Embodiment 14 of the present application.

[0226] As Figure 27 shown, the optical lens sequentially 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 along the optical axis from the first side to the second side. The difference in the positive and negative of the optical power of each lens of the optical lens of Embodiment 14 from that of Embodiment 1 is only that the second lens L2 of Embodiment 14 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 first side surface S13 and the second side surface S14 of the seventh lens L7 are anastigmatic.

[0227] Table 27 shows the parameters of each lens of the optical lens of Example 14. The surface types of each lens can be obtained from the following table and will not be elaborated. Table 28 shows the parameters of the aspherical lenses that can be used in the examples. Among them, each aspherical surface type can be defined by formula (1) given in Example 1 above.

[0228] Table 27

[0229]

[0230] Table 28

[0231]

[0232] Figure 28 shows the axial chromatic aberration diagram of the optical lens of Example 14. As Figure 28 shown, the optical lens provided in Example 14 of the present application has good imaging quality.

[0233] Example 15

[0234] The following refers to Figure 29 to describe the optical lens according to Example 15 of the present application. In this embodiment, for the sake of simplicity, some descriptions similar to those in Example 1 will be omitted. Figure 29 shows a schematic structural diagram of the optical lens according to Example 15 of the present application.

[0235] As Figure 29 shown, the optical lens sequentially 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 along the optical axis from the first side to the second side. The difference in the positive and negative of the optical power of each lens of the optical lens in Example 15 from that in Example 1 is only that the second lens L2 in 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 an anti-curve.

[0236] Table 29 shows the parameters of each lens of the optical lens of Example 15. The surface types of each lens can be obtained from the following table and will not be elaborated. Table 30 shows the parameters of the aspherical lenses that can be used in the examples. Among them, each aspherical surface type can be defined by formula (1) given in Example 1 above.

[0237] Table 29

[0238]

[0239] Table 30

[0240]

[0241] Figure 30Shows the axial chromatic aberration diagram of the optical lens of Embodiment 15, as Figure 30 shown, the optical lens provided in Embodiment 15 of the present application has good imaging quality.

[0242] Embodiment 16

[0243] The following is a reference to Figure 31 describes the optical lens according to Embodiment 16 of the present application. In this embodiment, for the sake of brevity, some descriptions similar to those in Embodiment 1 will be omitted. Figure 31 Shows a schematic structural diagram of the optical lens according to Embodiment 16 of the present application.

[0244] As Figure 31 shown, the optical lens sequentially 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 along the optical axis from the first side to the second side. The difference between the positive and negative optical powers of each lens of the optical lens in Embodiment 16 and that in Embodiment 1 is only that the second lens L2 in Embodiment 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 an anti-curve.

[0245] Table 31 shows the parameters of each lens of the optical lens in Embodiment 16. The surface type of each lens can be obtained according to the following table and will not be elaborated. Table 32 shows the parameters of the aspherical lenses that can be used in the embodiment. Among them, each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0246] Table 31

[0247]

[0248] Table 32

[0249]

[0250] Figure 32 Shows the axial chromatic aberration diagram of the optical lens of Embodiment 16, as Figure 32 shown, the optical lens provided in Embodiment 16 of the present application has good imaging quality.

[0251] In summary, Embodiments 1 to 16 respectively satisfy the relationships shown in Tables 33-1 and 33-2 below. In Tables 33-1 and 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).

[0252] Table 33-1

[0253]

[0254] Table 33-2

[0255]

[0256] The present application also provides an electronic device, which may include an optical lens according to the above embodiments of the present application and an imaging element for converting the optical image formed by the optical lens into an electrical signal. The electronic device may be an independent electronic device such as a distance detection camera, or an imaging module integrated on a distance detection device. In addition, the electronic device may also be an independent imaging device such as a vehicle-mounted camera, or an imaging module integrated on an assisted driving system. In an exemplary embodiment, the electronic device may include an optical lens and a light source according to the above embodiments of the present application. The light emitted by the light source is projected onto a target area through the optical lens to form an image or illuminate the area.

[0257] The above description is only the preferred embodiments of the present application and the description of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solutions formed by the 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 technical solutions formed by mutually replacing the above features with the technical features (but not limited to) having similar functions disclosed in the present application.

Claims

1. An optical lens, characterized in that, The optical lens sequentially includes, from the first side to the second side along the optical axis: A first lens with a negative optical power, whose first side is concave and second side is concave; A second lens with a positive or negative optical power, whose first side is concave and second side is convex; A third lens with a positive optical power, whose second side is convex; A fourth lens with a positive optical power, whose first side is convex and second side is convex; A fifth lens with an optical power, whose first side is convex; A sixth lens with an optical power; and A seventh lens with a 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, 55° ≤ (FOV × F) / H ≤ 85°, -50 ≤ R1 / F < 0, 2 ≤ F56 / F ≤ 30, 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 optical power of the first lens, 2 is the optical power of the second lens, 3 is the optical power of the third lens, is the total optical power of the optical lens, H is the image height corresponding to the maximum field of view angle of the optical lens, FOV is the maximum field of view angle of the optical lens, R1 is the curvature radius of the first side surface of the first lens, and F56 is the combined focal length of the fifth lens and the sixth lens.

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

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

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

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

6. The optical lens according to claim 1, wherein The optical lens satisfies: 0 < D / H / FOV×1° ≤ 0.03, Wherein, D is the maximum clear aperture of the first side of the first lens corresponding to the maximum field of view angle of the optical lens.

7. The optical lens according to claim 1, wherein The optical lens satisfies at least one of the following: 0.3 rad -1 ≤ D / (H θ) ≤ 0.8 rad -1 , 4 ≤ TTL / F ≤ 6, Wherein, TTL is the overall optical length of the optical lens, D is the maximum clear aperture of the first side of the first lens 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.

8. The optical lens according to claim 1, characterized in that, The optical lens satisfies: BFL / TTL ≤ 0.12, Wherein, TTL is the overall optical length of the optical lens, and BFL is the back focal length of the optical lens.

9. The optical lens according to claim 1, characterized in that, The optical lens satisfies at least one of the following: -40 ≤ R1 / (R2 + d1) ≤ -1, 0.3 ≤ F3 / F4 ≤ 5, Wherein, R2 is the radius of curvature of the second side of the first lens, d1 is the central 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.

10. The optical lens according to claim 1, characterized in that, The optical lens satisfies: F7 / F ≥3, Wherein, F7 is the effective focal length of the seventh lens.

11. The optical lens according to claim 1, characterized in that, 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.

12. The optical lens according to claim 1, wherein 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.

13. The optical lens according to claim 1, wherein The optical lens satisfies: -25 ≤ R8 / F ≤ -2, wherein, R8 is the radius of curvature of the second surface of the fourth lens.

14. The optical lens according to claim 1, characterized in that, The optical lens satisfies: 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.

15. The optical lens according to claim 1, wherein The optical lens satisfies: -1.5 ≤ R2 / R3 ≤ -0.3, wherein, R2 is the radius of curvature of the second surface of the first lens, and R3 is the radius of curvature of the first surface of the second lens.

16. The optical lens according to claim 1, characterized in that, The optical lens satisfies: -1 ≤ R4 / R5 ≤ 0.9, wherein, R4 is the radius of curvature of the second surface of the second lens, and R5 is the radius of curvature of the first surface of the third lens.

17. The optical lens according to claim 1, wherein The optical lens satisfies: -5 ≤ R8 / R9 ≤ -1, wherein, R8 is the radius of curvature of the second surface of the fourth lens, and R9 is the radius of curvature of the first surface of the fifth lens.

18. The optical lens according to claim 1, characterized in that, 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 back focal length of the optical lens.

19. The optical lens according to claim 1, wherein The optical lens satisfies: 0.1 ≤ (d5 + d6) / TTL ≤ 0.3, wherein, d6 is the central thickness of the sixth lens, d5 is the central thickness of the fifth lens, and TTL is the total optical length of the optical lens.

20. The optical lens according to claim 1, characterized in that, The optical lens 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, wherein, R2 is the radius of curvature of the second surface of the first lens, R3 is the radius of curvature of the first surface of the second lens, R4 is the radius of curvature of the second surface of the second lens, R5 is the radius of curvature of the first surface of the third lens, R8 is the radius of curvature of the second surface of the fourth lens, R9 is the radius of curvature of the first surface of the fifth lens, d1 is the central thickness of the first lens, d6 is the central thickness of the sixth lens, d5 is the central thickness of the fifth 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 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, D is the maximum clear aperture of the first surface of the first lens corresponding to the maximum field of view angle of the optical lens, TTL is the total optical length of the optical lens, θ is the radian value corresponding to the maximum field of view angle of the optical lens, and BFL is the back focal length of the optical lens.

21. The optical lens according to claim 1, wherein 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°, 0.5007 rad -1 ≤ D / (H θ) ≤ 0.6653 rad -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, Wherein, 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 central thickness of the first lens, d6 is the central thickness of the sixth lens, d5 is the central thickness of the fifth 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 overall 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, D is the maximum clear aperture of the first side surface of the first lens corresponding to the maximum field of view angle of the optical lens, TTL is the overall optical length of the optical lens, θ is the radian value corresponding to the maximum field of view angle of the optical lens, and BFL is the back focal length of the optical lens.

22. An electronic device, characterized in that, comprising the optical lens according to any one of claims 1-21, and the electronic device further 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 the target area through the optical lens to form an image or illuminate the area.

Images