Optical Lens and Electronic Device

Abstract

The present application discloses an optical lens and an electronic device. The optical lens sequentially includes, along the optical axis, from the first side to the second side: a first lens with a positive optical power; a second lens with a negative optical power, the second side surface of which is concave; a third lens with a positive optical power; a fourth lens with a negative optical power; a fifth lens with a positive optical power, the first side surface of which is concave and the second side surface of which is convex; a sixth lens with a negative optical power, the first side surface of which is concave; a seventh lens with a positive optical power, the second side surface of which is convex; an eighth lens with a positive optical power; and a ninth lens with a positive optical power. The optical lens satisfies: 2.8 ≤ F1 / F ≤ 20, -3 ≤ F2 / F ≤ -0.8. The optical lens provided by the embodiment of the present application can achieve small distortion.

Description

Technical Field

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

[0002] With the development of technology, the market has higher and higher requirements for optical lenses. For example, projection lenses in optical lenses, as an important part of projectors and PGU (image generation units), with the development of DMD (spatial light modulator) and LCOS (liquid crystal on silicon) chips, the market has more stringent requirements for projection lenses.

[0003] However, the optical lenses in the related art, especially those used for projection lenses, cannot achieve small distortion and cannot meet the requirements of the market for their imaging quality. Summary of the Invention

[0004] One aspect of this application provides an optical lens. The optical lens sequentially includes, along the optical axis, from the first side to the second side: a first lens with a positive focal power; a second lens with a negative focal power, the second side of which is concave; a third lens with a positive focal power; a fourth lens with a negative focal power; a fifth lens with a positive focal power, the first side of which is concave and the second side of which is convex; a sixth lens with a negative focal power, the first side of which is concave; a seventh lens with a positive focal power, the second side of which is convex; an eighth lens with a positive focal power; and a ninth lens with a positive focal power. The optical lens satisfies: 2.8 ≤ F1 / F ≤ 20, -3 ≤ F2 / F ≤ -0.8, where F is the total effective focal length of the optical lens, F1 is the effective focal length of the first lens, and F2 is the effective focal length of the second lens. By making the second lens have a negative focal power, with its first side being convex and the second side being concave, this structure can offset the distortion brought by the two sides. Further, the fifth lens has a positive focal power and is the lens closest to the object side in the rear lens group (composed of the fifth lens, the sixth lens, the seventh lens, the eighth lens, and the ninth lens), and can introduce barrel distortion at the largest field of view of the rear group, which is also beneficial for achieving small distortion. Moreover, making the first lens have a positive focal power can introduce barrel distortion, making the light rays converge. Compared with the pillow distortion introduced when the first lens has a negative focal power, barrel distortion is better corrected. Thus, this setting is also beneficial for achieving small distortion, and at the same time, making the optical lens satisfy the conditional formula 2.8 ≤ F1 / F ≤ 20 can further achieve small distortion of the optical lens. Even further, by using the first lens with a positive focal power and the second lens with a negative focal power in combination, and making the optical lens satisfy -3 ≤ F2 / F ≤ -0.8, the positive and negative distortions of the first lens and the second lens can cancel each other out, that is, the distortion can be corrected to achieve small distortion. That is, by combining the above structures and making the optical lens satisfy the above conditional formula, small distortion of the optical lens can be well achieved.

[0005] Another aspect of the present application provides an electronic device, including the optical lens of the above-described embodiment, and including an imaging element for converting an optical image formed by the optical lens into an electrical signal, or including a light source. Description of the Drawings

[0006] In conjunction with the accompanying drawings, through the following detailed description of the embodiments, other features, objects, and advantages of the present application will become more apparent. In the drawings:

[0007] Figures 1 to 41 Schematic structural diagrams of the optical lenses according to Embodiment 1 to Embodiment 41 of the present application are respectively shown. Detailed Embodiments

[0008] 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. 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 features. 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.

[0009] In the drawings, for the sake of clarity, the thickness, dimensions, and shape of the lenses 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 for illustrative purposes only and are not drawn to an exact scale.

[0010] In this document, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the first side is called the first side surface of the lens, the surface of each lens closest to the second side is called the second side surface of the lens, and the surface of the optical lens closest to the second side is called the second side surface of the optical lens.

[0011] It should be understood that the optical lens provided in this application can be used for imaging, projection, and lidar lenses. When the optical lens provided in this application is used as an imaging lens or the receiving end lens of lidar, the imaging lens can be, for example, a vehicle-mounted camera, an infrared camera, a drone camera, a night vision camera, a security surveillance camera, etc. In this context, the "first side" can refer to the object side, and the "second side" can refer to the image side. Light from the object side can form an image on the image side. When the optical lens provided in this application is used as a projection lens or the transmitting end lens of radar, the "first side" can refer to the object side, and the "second side" can refer to the light source side. Light from the light source side passes through the optical lens and is projected onto the first side, forming an image or illuminating an area on the first side.

[0012] It should also be understood that the terms "comprising", "including", "having", "containing", and / or "including having", 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 a 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" indicates "one or more embodiments of this application". And the term "exemplary" is intended to refer to an example or illustration. Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by those 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.

[0013] It should be noted that, without conflict, the embodiments and features in the embodiments of this application can be combined with each other. The following will describe this application in detail with reference to the drawings and in combination with embodiments. The features, principles, and other aspects of this application will be described in detail below.

[0014] In an exemplary embodiment, the optical lens includes, for example, nine lenses with optical power, namely, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, and a ninth lens. These nine lenses are arranged in sequence along the optical axis from the first side to the second side.

[0015] In an exemplary embodiment, the optical lens provided in this application can be used as, for example, a vehicle-mounted lens or the receiving end lens of lidar. 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 form an image on the image side. The imaging surface of the optical lens can be provided on the second side of the optical lens.

[0016] In an exemplary embodiment, the optical lens provided by the present application can be used as, for example, a projection lens or a lidar emission 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. The 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.

[0017] In an exemplary embodiment, the optical lens may further include a photosensitive element disposed on the second side surface. Optionally, the photosensitive element disposed on the second side surface can be a charge-coupled device (CCD) or a complementary metal-oxide-semiconductor device (CMOS).

[0018] In an exemplary embodiment, a diaphragm for limiting the light beam can be disposed between the fourth lens and the fifth lens to further improve the imaging quality of the optical lens. The diaphragm is beneficial to converging the light entering the optical system, balancing the aperture sizes of the lenses in the front and rear optical systems, and can achieve a small FNO of the optical lens while making the light trend gentle. 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 disposed at other positions according to actual needs.

[0019] In an exemplary embodiment, the first lens can have a positive optical power. The first lens having a positive optical power can introduce barrel distortion, making the light trend of the lens light contract. Compared with the pincushion distortion introduced by the first lens with a negative optical power, introducing barrel distortion is better corrected and is beneficial to achieving small distortion. In an exemplary embodiment, the first side surface of the first lens can be a convex surface, and the second side surface can be a concave surface. Making the first side surface of the first lens a convex surface and the second side surface a concave surface can make the aberrations complementary and is beneficial to achieving high resolution. In an exemplary embodiment, the first side surface of the first lens can be a convex surface, and the second side surface can be a convex surface. The second side surface of the first lens being a convex surface can play a role in converging the light to the second lens, making the light transition smoothly to the imaging surface. In an exemplary embodiment, the first side surface of the first lens can be a plane, and the second side surface can be a convex surface. The first side surface of the first lens being a plane can play a role in transitioning the light to the second side surface of the first lens. In an exemplary embodiment, the first side surface of the first lens can be a concave surface, and the second side surface can be a convex surface. The first side surface of the first lens being a concave surface and the second side surface being a convex surface can make the aberrations complementary and is beneficial to achieving high resolution. In an exemplary embodiment, the first side surface of the first lens can be a convex surface, and the second side surface can be a plane. The second side surface of the first lens being a plane can make the light transition smoothly to the second lens.

[0020] In an exemplary embodiment, the second lens may have a negative optical power. Its first side may be convex, and its second side may be concave. In an exemplary embodiment, the second lens may be generally crescent-shaped as a whole. The second lens has a negative optical power and is crescent-shaped. Its first side is convex and its second side is concave, which can offset the distortion brought by the two surfaces. In this embodiment, the second lens may be paired with the first lens having a positive optical power, which is conducive to achieving small distortion. Moreover, the first side of the second lens is convex, which can converge the light rays converged by the front optical system to the rear optical system. The second side of the second lens is concave, which can reduce the divergence angle of the light rays entering the third lens.

[0021] In an exemplary embodiment, the third lens may have a positive optical power. In this embodiment, the third lens having a positive optical power can introduce barrel distortion, and the fourth lens may have a negative optical power to introduce pincushion distortion. The cooperation of this third lens and the fourth lens is conducive to achieving small distortion and is also conducive to achieving smaller aberrations, thereby achieving high resolution. In an exemplary embodiment, the first side of the third lens may be convex, and the second side may be concave. The first side of the third lens is convex and the second side is concave, which can make the aberrations complementary and is conducive to achieving high resolution. In an exemplary embodiment, the first side of the third lens may be convex, and the second side may be convex. The second side of the third lens being convex can converge the light rays to the fourth lens, enabling the light rays to smoothly transition to the imaging surface. In an exemplary embodiment, the first side of the third lens may be planar, and the second side may be convex. The first side of the third lens being planar can play a role in transitioning the light rays to the second side. In an exemplary embodiment, the first side of the third lens may be concave, and the second side may be convex. The first side of the third lens being concave and the second side being convex can make the aberrations complementary and is conducive to achieving high resolution. In an exemplary embodiment, the first side of the third lens may be convex, and the second side may be planar. The second side of the third lens being planar can enable the light rays to smoothly transition to the fourth lens.

[0022] In an exemplary embodiment, the fourth lens may have a negative focal power. In this embodiment, with the fourth lens having a negative focal power, pincushion distortion can be introduced. The third lens may have a positive focal power and introduce barrel distortion. The cooperation of this fourth lens and the third lens is conducive to achieving small distortion and is also conducive to achieving smaller aberrations, thereby achieving high resolution. In an exemplary embodiment, the first side of the fourth lens may be convex and the second side may be concave. With the first side of the fourth lens being convex and the second side being concave, the aberrations can be complementary, which is conducive to achieving high resolution. In an exemplary embodiment, the first side of the fourth lens may be flat and the second side may be concave. With the first side of the fourth lens being flat, it can play a role in transitioning light rays to the second side of the fourth lens. With the second side of the fourth lens being concave, it can play a role in reducing the divergence angle of the light rays entering the fifth lens, and thus can reduce the FOV (field of view of the optical lens) of the rear group. The aberrations brought about by the smaller FOV are conducive to achieving high resolution. In an exemplary embodiment, the first side of the fourth lens may be concave and the second side may be concave. In this embodiment, the first side and the second side of the third lens may both be convex, and the first side and the second side of the fourth lens are both concave, which can make the surface shapes of the third lens and the fourth lens complementary, conducive to achieving small distortion and high resolution. In an exemplary embodiment, the first side of the fourth lens may be concave and the second side may be flat. In this embodiment, the second side of the third lens can be made convex and the first side of the fourth lens can be made concave, so that the aberrations of the second side of the third lens and the first side of the fourth lens can be complementary, which is conducive to achieving high resolution. The second side of the fourth lens being flat can play a role in transitioning light rays to the fifth lens. In an exemplary embodiment, the first side of the fourth lens may be concave and the second side may be convex. In this embodiment, the second side of the third lens can be made convex and the first side of the fourth lens can be made concave, so that the aberrations of the second side of the third lens and the first side of the fourth lens can be complementary, which is conducive to achieving high resolution. And making the first side of the fourth lens concave and the second side convex can also make the aberrations complementary, which is conducive to achieving high resolution.

[0023] In an exemplary embodiment, the fifth lens may have a positive focal power, its first side may be concave, and its second side may be convex. With the fifth lens having a positive focal power, barrel distortion can be introduced at the maximum field of view of the rear group, which is conducive to achieving small distortion. Making the first side of the fifth lens concave and the second side convex can make the aberrations complementary, which is conducive to achieving high resolution.

[0024] In an exemplary embodiment, the sixth lens may have a negative optical power. Having a negative optical power, the sixth lens can collect the light rays that tend to converge when passing through the front group and the sixth lens, and is conducive to appropriately diffusing the light rays, thereby making the light ray trend smoother and facilitating the elongation of the back focal length. In an exemplary embodiment, the first side of the sixth lens may be concave, and the second side may be concave. In this embodiment, the second side of the fifth lens may be convex. Making the first side of the sixth lens concave can make the aberrations complementary, which is conducive to achieving high resolution. The second side of the sixth lens being concave can play a role in diffusing the light rays, helping to increase the beam aperture and facilitating the achievement of high resolution. In an exemplary embodiment, the first side of the sixth lens may be concave, and the second side may be flat. In this embodiment, the second side of the fifth lens may be convex. Making the first side of the sixth lens concave can make the aberrations complementary, which is conducive to achieving high resolution. The second side of the sixth lens being flat can play a role in transitioning the light rays to the seventh lens. In an exemplary embodiment, the first side of the sixth lens may be concave, and the second side may be convex. In this embodiment, the second side of the fifth lens may be convex. Making the first side of the sixth lens concave can make the aberrations complementary, which is conducive to achieving high resolution. And in this embodiment, the first side of the seventh lens may be concave, and the second side of the sixth lens being convex can make the aberrations complementary, which is conducive to achieving high resolution.

[0025] In an exemplary embodiment, the seventh lens may have a positive optical power. Having a positive optical power, the seventh lens can be paired with the eighth lens and the ninth lens (both the eighth lens and the ninth lens having positive optical powers), that is, the lens closer to the chip can bear a greater optical power, which is conducive to generating light rays with a small angle on the chip side, and thus is conducive to achieving a small CRA and a long back focal length. In an exemplary embodiment, the first side of the seventh lens may be concave, and the second side may be convex. The first side of the seventh lens being concave can play a role in diffusing the light rays, helping to increase the beam aperture and facilitating the achievement of high resolution. The second side of the seventh lens being convex can play a role in converging the light rays, which is conducive to achieving a long back focal length. In an exemplary embodiment, the first side of the seventh lens may be flat, and the second side may be convex. The first side of the seventh lens being flat can play a role in transitioning the light rays to the second side of the seventh lens. The second side of the seventh lens being convex can play a role in converging the light rays, which is conducive to achieving a long back focal length. In an exemplary embodiment, the first side of the seventh lens may be convex, and the second side may be convex. In this embodiment, the second side of the sixth lens may be concave. Making the first side of the seventh lens convex can make the aberrations complementary, which is conducive to achieving high resolution. The second side of the seventh lens being convex can play a role in converging the light rays, which is conducive to achieving a long back focal length.

[0026] In an exemplary embodiment, the eighth lens may have a positive optical power. The eighth lens has a positive optical power, and the optical power of the eighth lens is positive, which can further converge the light rays passing through the seventh lens, enabling the light rays to transition smoothly, facilitating the achievement of a small CRA and a long back focal length. In an exemplary embodiment, the first side surface of the eighth lens may be convex, and the second side surface may be concave. The first side surface of the eighth lens being convex can further converge the light rays passing through the seventh lens, enabling the light rays to transition smoothly, facilitating the achievement of a small CRA and a long back focal length. In this embodiment, the first side surface of the ninth lens may be concave, and the second side surface of the eighth lens being concave can make the aberrations complementary, facilitating the achievement of high resolution. In an exemplary embodiment, the first side surface of the eighth lens may be convex, and the second side surface may be convex. Both the first side surface and the second side surface of the eighth lens being convex can make the distribution of the optical power of these two side surfaces more uniform, enabling the light rays to transition smoothly to the ninth lens. In an exemplary embodiment, the first side surface of the eighth lens may be flat, and the second side surface may be convex. The first side surface of the eighth lens being flat can serve to transition the light rays to the second side surface of the eighth lens. In an exemplary embodiment, the first side surface of the eighth lens may be concave, and the second side surface may be convex. The first side surface of the eighth lens being concave and the second side surface being convex can make the aberrations complementary, facilitating the achievement of high resolution. In an exemplary embodiment, the first side surface of the eighth lens may be convex, and the second side surface may be flat. The second side surface of the eighth lens being flat can enable the light rays to transition smoothly to the ninth lens.

[0027] In an exemplary embodiment, the ninth lens may have a positive optical power. Having a positive optical power, the ninth lens can further converge the light rays passing through the eighth lens, enabling the light rays to transition smoothly, which is conducive to achieving a small CRA and a long back focal length. In an exemplary embodiment, the first side of the ninth lens may be convex, and the second side may be concave. With the first side of the ninth lens being convex, it can further converge the light rays passing through the eighth lens, enabling the light rays to transition smoothly, which is conducive to achieving a small CRA and a long back focal length. In this embodiment, the second side of the eighth lens may be concave, and having the first side of the ninth lens be convex can also make the aberrations complementary, which is conducive to achieving high resolution. In an exemplary embodiment, the first side of the ninth lens may be convex, and the second side may be convex. With both the first side and the second side of the ninth lens being convex, the distribution of the optical power of these two sides can be more uniform, enabling the light rays to transition smoothly to the imaging surface. In an exemplary embodiment, the first side of the ninth lens may be flat, and the second side may be convex. With the first side of the ninth lens being flat, it can play a role in transitioning the light rays to the second side of the ninth lens. In an exemplary embodiment, the first side of the ninth lens may be concave, and the second side may be convex. With the first side of the ninth lens being concave and the second side being convex, the aberrations can be complementary, which is conducive to achieving high resolution. In an exemplary embodiment, the first side of the ninth lens may be convex, and the second side may be flat. Making the second side of the ninth lens flat can enable the light rays to transition smoothly to the imaging surface.

[0028] In an exemplary embodiment, at least one of the first lens to the ninth lens may be a spherical lens or an aspherical lens. In an exemplary embodiment, the first lens and / or the ninth lens may be an aspherical lens. The present application does not specifically limit the specific number of spherical lenses and aspherical lenses. When focusing on 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, 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 aberrations that occur 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. In an exemplary embodiment, the second lens may be an aspherical lens, and at the same time, one side of the second lens is concave and the other side is convex, making the second lens as a whole approximately in the shape of a concentric circle, which is more conducive to reducing the sensitivity of the front lens group (the front lens group composed of the first lens, the second lens, the third lens, and the fourth lens), improving the resolution. For example, the MTF function value at 60 lines / mm may be greater than 0.6.

[0029] In an exemplary embodiment, the fifth lens and the sixth lens can be glued together to form a glued component, so as to better correct chromatic aberration and thus improve the resolution. Moreover, after gluing, the tolerance sensitivity of the fifth lens and the sixth lens can be reduced. Also, gluing the fifth lens and the sixth lens can smoothly transition the light passing through the front optical system (such as the first lens to the fourth lens) 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, gluing the fifth lens and the sixth lens can achieve the following technical effects: 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; reducing the field curvature and correcting the off-axis aberrations of the optical lens.

[0030] In this application, 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, F5 is the effective focal length of the fifth lens, F6 is the effective focal length of the sixth lens, F7 is the effective focal length of the seventh lens, F8 is the effective focal length of the eighth lens, F9 is the effective focal length of the ninth lens, F7-9 is the combined focal length of the seventh lens, the eighth lens, and the ninth lens, d11 is the central thickness of the sixth lens, d10 is the central thickness of the fifth lens, d4-5 is the distance along the optical axis between the fourth lens and the fifth lens, d56 is the distance along the optical axis between the fifth lens and the sixth lens, TL is the lens total length 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, 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, ENPD is the entrance pupil diameter of the optical lens, D is the maximum effective aperture of the optical lens, DST is the aperture of the diaphragm, R8 is the radius of curvature of the second side surface of the fourth lens, R10 is the radius of curvature of the second side surface of the fifth lens, R9 is the radius of curvature of the first side surface of the fifth lens, R16 is the radius of curvature of the second side surface of the eighth lens, R17 is the radius of curvature of the first side surface of the ninth lens. The above meanings will not be elaborated hereinafter.

[0031] Figure 1 A schematic structural diagram of an optical lens according to an embodiment of the present application is shown. The optical lens provided in the present application can be used as, for example, a vehicle-mounted lens or a lidar receiving end lens. At this time, Figure 1In the IMA, it represents the imaging surface. The light from the object sequentially passes through the surfaces S1 to S22 and finally forms an image on the imaging surface provided on the second side. Among them, an image sensing chip is provided 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 In the IMA, it represents the light source surface. The light from the light source surface sequentially passes through the surfaces S22 to S1 and finally projects to the first side, and forms an image or an illuminated area on the first side.

[0032] In an exemplary embodiment, the optical lens can satisfy: 50° ≤ (FOV × F) / H ≤ 60°. By making the optical lens satisfy the above conditional formula, the optical lens can satisfy a large field of view and a long focal length, which helps to improve the central resolution of the optical lens. More preferably, the optical lens can further satisfy: 54° ≤ (FOV × F) / H ≤ 56°, which is more conducive to achieving a large field of view of the optical lens.

[0033] In an exemplary embodiment, the optical lens can satisfy: 4 ≤ TTL / F ≤ 6.2. By making the optical lens satisfy the above conditional formula, when the total effective focal length of the optical lens is certain, the optical total length of the optical lens can be short, which is conducive to realizing miniaturization. More preferably, the optical lens can further satisfy: 5.6 ≤ TTL / F ≤ 5.9, which is more conducive to realizing the short optical total length of the optical lens.

[0034] In an exemplary embodiment, the optical lens can satisfy: 0.1 ≤ TTL / H / FOV × 1° ≤ 0.2. By making the optical lens satisfy the above conditional formula, when the maximum field of view angle of the optical lens is certain, the optical total length of the optical lens can be short, which is conducive to realizing miniaturization. More preferably, the optical lens can further satisfy: 0.16 ≤ TTL / H / FOV × 1° ≤ 0.18, which is more conducive to realizing the miniaturization of the optical lens.

[0035] In an exemplary embodiment, the optical lens can satisfy: 3rad -1 ≤ TTL / H / θ ≤ 12rad -1 . By making the optical lens satisfy the above conditional formula, when the image plane of the optical lens is certain, the optical total length of the optical lens can be short, which is conducive to realizing miniaturization. More preferably, the optical lens can further satisfy: 9rad -1 ≤ TTL / H / θ ≤ 11rad -1 , which is more conducive to realizing the miniaturization of the optical lens.

[0036] In an exemplary embodiment, the optical lens may satisfy: 2 ≤ TTL / D ≤ 5.5. By making the optical lens satisfy the above conditional expression, the overall optical length of the optical lens can be short, which is beneficial to achieving miniaturization. More preferably, the optical lens may further satisfy: 3.5 ≤ TTL / D ≤ 4.5, which is more beneficial to achieving the miniaturization of the optical lens.

[0037] In an exemplary embodiment, the optical lens may satisfy: 0.8 rad ≥ (F θ) / D ≥ 0.4 rad. By making the optical lens satisfy the above conditional expression, when the field of view is constant, the aperture of the optical lens can be small, which is beneficial to achieving miniaturization. More preferably, the optical lens may further satisfy: 0.45 rad ≤ (F θ) / D ≤ 0.65 rad, which is more beneficial to achieving the miniaturization of the optical lens.

[0038] In an exemplary embodiment, the optical lens may satisfy: 0.02 ≤ D / H / FOV × 1° ≤ 0.06. By making the optical lens satisfy the above conditional expression, when the image height is constant, the aperture of the optical lens can be small, which is beneficial to achieving miniaturization. More preferably, the optical lens may further satisfy: 0.03 ≤ D / H / FOV × 1° ≤ 0.05, which is more beneficial to achieving the miniaturization of the optical lens.

[0039] In an exemplary embodiment, the optical lens may satisfy: 1.5 rad -1 ≤ D / H / θ ≤ 3.5 rad -1 . By making the optical lens satisfy the above conditional expression, when the field of view angle is constant, the aperture of the optical lens can be small, which is beneficial to achieving miniaturization. More preferably, the optical lens may further satisfy: 2 rad -1 ≤ D / H / θ ≤ 2.8 rad -1 , which is more beneficial to achieving the miniaturization of the optical lens.

[0040] In an exemplary embodiment, the optical lens may satisfy: 0.05 mm -1 ≤ D / H / F ≤ 0.25 mm -1 . By making the optical lens satisfy the above conditional expression, when the field of view angle and the total effective focal length of the optical lens are constant, the aperture of the optical lens can be small, which is beneficial to achieving miniaturization. More preferably, the optical lens may further satisfy: 0.1 mm -1 ≤ D / H / F ≤ 0.165 mm -1 , which is more beneficial to achieving the miniaturization of the optical lens.

[0041] In an exemplary embodiment, the optical lens may satisfy: 0.3 ≤ BFL / TTL ≤ 0.5. By making the optical lens satisfy the above conditional expression, the effect of a long back focal length can be achieved, leaving sufficient space for the addition of optical devices such as prisms, and facilitating processing and assembly. More preferably, the optical lens may further satisfy: 0.37 ≤ BFL / TTL ≤ 0.4, which is more conducive to achieving the long back focal length of the optical lens.

[0042] In an exemplary embodiment, the optical lens may satisfy: 0.4 ≤ BFL / TL ≤ 0.8. By making the optical lens satisfy the above conditional expression, the effect of a long back focal length can be achieved, leaving sufficient space for the addition of optical devices such as prisms, and facilitating processing and assembly. More preferably, the optical lens may further satisfy: 0.6 ≤ BFL / TL ≤ 0.66, which is more conducive to achieving the long back focal length of the optical lens.

[0043] In an exemplary embodiment, the optical lens may satisfy: 0.8 ≤ F / H ≤ 2. By making the optical lens satisfy the above conditional expression, the total effective focal length of the optical lens and the image height corresponding to the maximum field of view angle can be controlled within a certain range, which is conducive to achieving high resolution of the optical lens. More preferably, the optical lens may further satisfy: 1.27 ≤ F / H ≤ 1.31, which is more conducive to achieving high resolution of the optical lens.

[0044] In an exemplary embodiment, the optical lens may satisfy: 2 ≤ F / ENPD ≤ 3. By making the optical lens satisfy the above conditional expression, a small FNO of the optical lens can be achieved, the light transmission amount can be increased, and it helps to improve the relative illuminance. More preferably, the optical lens may further satisfy: 2.6 ≤ F / ENPD ≤ 2.9, which is more conducive to achieving high light flux of the optical lens.

[0045] In an exemplary embodiment, the optical lens may satisfy: 0.1 mm−1 ≤ F / ENPD / D ≤ 0.19 mm−1. By making the optical lens satisfy the above conditional expression, a small FNO of the optical lens can be achieved, the light transmission amount can be increased, and it helps to improve the relative illuminance. More preferably, the optical lens may further satisfy: 0.13 mm -1 ≤ F / ENPD / D ≤ 0.18 mm -1 , which is more conducive to achieving high light flux of the optical lens.

[0046] In an exemplary embodiment, the optical lens may satisfy: 0.45 ≤ DST / F ≤ 0.65. By making the optical lens satisfy the above conditional expression, the ratio of the aperture diameter to the total effective focal length of the optical lens can be made larger, and thus the aperture of the optical lens is large. More preferably, the optical lens may further satisfy: 0.54 ≤ DST / F ≤ 0.6, which is more conducive to achieving high light flux of the optical lens.

[0047] In an exemplary embodiment, the optical lens may satisfy: 2.8 ≤ F1 / F ≤ 20. In an exemplary embodiment, the first lens has a positive optical power, which introduces barrel distortion, and the light rays are convergent. Compared with the pincushion distortion introduced when the first lens has a negative optical power, the barrel distortion is better corrected, and thus this setting is beneficial to achieving small distortion. By making the optical lens satisfy the above conditional formula, small distortion of the optical lens can be further achieved. More preferably, the optical lens may further satisfy: 3.6 ≤ F1 / F ≤ 17.47, which is more beneficial to achieving small distortion of the optical lens.

[0048] In an exemplary embodiment, the optical lens may satisfy: -3 ≤ F2 / F ≤ -0.8. In an exemplary embodiment, the first lens has a positive optical power. By making the optical lens satisfy the above conditional formula and making the second lens have a negative optical power, the positive and negative distortions of the first lens and the second lens can cancel each other out, and thus the distortion can be corrected to achieve small distortion. More preferably, the optical lens may further satisfy: -2.5 ≤ F2 / F ≤ -1, which is more beneficial to achieving small distortion of the optical lens.

[0049] In an exemplary embodiment, the optical lens may satisfy: 1.5 ≤ R3 / R4 ≤ 30. In an exemplary embodiment, the second lens may have a negative optical power and is overall in a meniscus shape, with its first side being convex and the second side being concave. This structure can cancel the distortion brought by the two sides, which is beneficial to achieving small distortion. By making the optical lens satisfy the above conditional formula, the distortion brought by the two sides can be further cancelled, which is beneficial to achieving small distortion. More preferably, the optical lens may further satisfy: 2.2 ≤ R3 / R4 ≤ 25, which is more beneficial to achieving small distortion of the optical lens.

[0050] In an exemplary embodiment, the optical lens may satisfy: 3.42 ≤ F5 / F ≤ 135. In an exemplary embodiment, the fifth lens has a positive optical power and is the lens closest to the object side of the rear lens group (composed of the fifth lens, the sixth lens, the seventh lens, the eighth lens, and the ninth lens). It can introduce barrel distortion at the largest field of view of the rear group, which is beneficial to achieving small distortion. By making the optical lens satisfy the above conditional formula, small distortion of the optical lens can be further achieved. More preferably, the optical lens may further satisfy: 5 ≤ F5 / F ≤ 128, which is more beneficial to achieving small distortion of the optical lens.

[0051] In an exemplary embodiment, the optical lens may satisfy: 0.5 ≤ R9 / R10 ≤ 6. In the exemplary embodiment, adjacent lenses among the first lens to the sixth lens are arranged with a combination of positive and negative optical powers. For example, the first lens with positive optical power, the second lens with negative optical power, the third lens with positive optical power, etc., to effectively reduce spherical aberration and coma and improve the resolution. And in the exemplary embodiment, the fifth lens has positive optical power and is in the shape of a meniscus with its first side concave toward the diaphragm, which can reduce the incident angle of the light passing through the diaphragm with respect to the fifth lens, reduce the field curvature of the system, and improve the resolution. By making the optical lens satisfy the above conditional formula, the incident angle of the light passing through the diaphragm with respect to the fifth lens can be further reduced, the field curvature of the system can be reduced, and the resolution can be improved. More preferably, the optical lens may further satisfy: 1 ≤ R9 / R10 ≤ 3.8, which is more conducive to achieving high resolution of the optical lens.

[0052] In an exemplary embodiment, the optical lens may satisfy: 0.15 ≤ F7 / F8 ≤ 1.2. By making the optical lens satisfy the above conditional formula and reasonably distributing the effective focal lengths of the seventh lens and the eighth lens, the introduction of spherical aberration can be reduced, which is conducive to achieving high resolution. More preferably, the optical lens may further satisfy: 0.2 ≤ F7 / F8 ≤ 1, which is more conducive to achieving high resolution of the optical lens.

[0053] In an exemplary embodiment, the optical lens may satisfy: 0.3 ≤ F8 / F9 ≤ 6. By making the optical lens satisfy the above conditional formula and reasonably distributing the focal lengths of the eighth lens and the ninth lens, the introduction of spherical aberration can be reduced, which is conducive to achieving high resolution. More preferably, the optical lens may further satisfy: 0.64 ≤ F8 / F9 ≤ 5.1, which is more conducive to achieving high resolution of the optical lens. And when the optical lens simultaneously satisfies the conditional formulas 0.3 ≤ F8 / F9 ≤ 6 and 0.15 ≤ F7 / F8 ≤ 1, and reasonably distributes the effective focal lengths of the seventh lens, the eighth lens, and the ninth lens, the introduction of spherical aberration can be further reduced, which is conducive to achieving high resolution.

[0054] In an exemplary embodiment, the optical lens may satisfy: 0.6 ≤ F7-9 / F ≤ 1.5. By making the optical lens satisfy the above conditional formula, the lenses near the chip (i.e., the lens group formed by the combination of the seventh lens, the eighth lens, and the ninth lens) are conducive to generating light rays with small angles on the chip side, which is conducive to achieving a small CRA and a long back focal length. More preferably, the optical lens may further satisfy: 0.94 ≤ F7-9 / F ≤ 1.22, which is more conducive to achieving a long back focal length of the optical lens.

[0055] In an exemplary embodiment, the optical lens may satisfy: -1.5 ≤ R16 / R17 ≤ 0. By making the optical lens satisfy the above conditional expression, the ratio of the curvature radius of the first side surface of the ninth lens and the second side surface of the eighth lens is reasonably set, so that the light rays emitted from the eighth lens can be smoothly transitioned to the ninth lens, which is beneficial to expanding the image plane and achieving a long focal length. Preferably, the optical lens may further satisfy: -1 ≤ R16 / R17 ≤ 0, which is more beneficial to achieving a long back focal length of the optical lens. In an exemplary embodiment, the second side surface of the eighth lens is a convex surface, and the first side surface of the ninth lens is a convex surface, and at the same time satisfying the above conditional expression (-1 ≤ R16 / R17 ≤ 0, or further -0.8 ≤ R16 / R17 ≤ 0), helps to correct chromatic aberration and can increase the light flux. In an exemplary embodiment, the second side surface of the eighth lens is a concave surface, and the first side surface of the ninth lens is a convex surface, and at the same time satisfying the conditional expression 300 ≥ R16 / R17 ≥ 0.05 (or further 270 ≥ R16 / R17 ≥ 0.08), is beneficial to further increasing the back focal length of the optical lens.

[0056] In an exemplary embodiment, the optical lens may satisfy: 0.35 ≥ (d10 + d11) / TL ≥ 0.02. By making the optical lens satisfy the above conditional expression, increasing the thickness of the fifth lens and the sixth lens helps the smooth transition of light rays and is beneficial to improving the image quality. More preferably, the optical lens may further satisfy: 0.3 ≥ (d10 + d11) / TL ≥ 0.04, which is more beneficial to achieving high resolution of the optical lens.

[0057] In an exemplary embodiment, the optical lens may satisfy: 0.1 ≤ d10 / d11 ≤ 2.5. 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, controlling the thickness of the fifth lens and the sixth lens to be close helps the smooth transition of light rays and is beneficial to improving the image quality. More preferably, the optical lens may further satisfy: 0.2 ≤ d10 / d11 ≤ 2.1, which is more beneficial to achieving high resolution of the optical lens.

[0058] In an exemplary embodiment, the optical lens may satisfy: d56 / TTL ≤ 0.02. By making the optical lens satisfy the above conditional expression, the distance between the fifth lens and the sixth lens along the optical axis is close, which is beneficial to the rapid transition of marginal rays, reduces marginal aberration, and achieves high resolution of the optical lens. More preferably, the optical lens may further satisfy: d56 / TTL ≤ 0.01, which is more beneficial to achieving high resolution of the optical lens.

[0059] In an exemplary embodiment, the optical lens may satisfy: -1 ≥ R9 / F ≥ -20. In the exemplary embodiment, the first side of the fifth lens may be concave, which helps to diverge light and enables the optical lens to satisfy the above conditional formula, is more conducive to diverging light, and thus can improve the edge resolution ability. More preferably, the optical lens may further satisfy: -2.5 ≥ R9 / F ≥ -17, which is more conducive to achieving high resolution of the optical lens.

[0060] In an exemplary embodiment, the optical lens may satisfy: 0.35 ≥ d4-5 / TTL ≥ 0.08. By making the optical lens satisfy the above conditional formula and controlling the distance between the fourth lens and the fifth lens along the optical axis, a higher degree of freedom can be provided for light adjustment, which helps to smoothly transition the light transmitted by the fourth lens to the rear optical system and achieve good sensitivity of the optical lens. More preferably, the optical lens may further satisfy: 0.3 ≥ d4-5 / TTL ≥ 0.1, which is more conducive to achieving good sensitivity of the optical lens.

[0061] In an exemplary embodiment, the optical lens may satisfy: -10 ≤ F4 / d4-5 ≤ -0.5. By making the optical lens satisfy the above conditional formula, controlling the fourth lens to have a negative focal power and a relatively small effective focal length can effectively correct the aberration of the optical lens. Moreover, by controlling the relatively long distance between the fourth lens and the fifth lens along the optical axis, the influence of the fourth lens having a small focal length can be offset, thereby reducing the sensitivity of the optical lens. More preferably, the optical lens may further satisfy: -8 ≤ F4 / d4-5 ≤ -0.8, which is more conducive to achieving low sensitivity of the optical lens.

[0062] In an exemplary embodiment, the optical lens may satisfy: 1 ≤ F3 / F ≤ 8. By making the optical lens satisfy the above conditional formula and making the third lens have a positive focal power, the third lens can smoothly receive the light diverged by the second lens and converge the light, so as to further reduce the aperture of the rear lens, which is beneficial to achieving low cost and miniaturization of the optical lens. More preferably, the optical lens may further satisfy: 2 ≤ F3 / F ≤ 6.5, which is more conducive to achieving low cost and miniaturization of the optical lens.

[0063] In an exemplary embodiment, the optical lens may satisfy: -7 ≤ F4 / F ≤ -0.5. Making the optical lens satisfy the above conditional formula and controlling the fourth lens to have a negative focal power and a relatively small effective focal length can effectively correct the aberration of the optical lens. More preferably, the optical lens may further satisfy: -6 ≤ F4 / F ≤ -1, which is more conducive to achieving small aberration of the optical lens.

[0064] In an exemplary embodiment, the optical lens may satisfy: -5 ≤ F6 / F ≤ -1. By making the optical lens satisfy the above conditional expression, it is possible to control the sixth lens to have a negative optical power and a relatively small effective focal length, thereby effectively eliminating the aberration of the optical lens. More preferably, the optical lens may further satisfy: -4 ≤ F6 / F ≤ -1.5, which is more conducive to achieving small aberration of the optical lens.

[0065] In an exemplary embodiment, as needed, the optical lens of the present application may further include a filter and / or a protective glass disposed between the ninth lens and the imaging surface. The filter can filter light rays with different wavelengths, and the protective glass can prevent the components (e.g., chips) on the second side of the optical lens from being damaged.

[0066] In an exemplary embodiment, the first lens to the ninth lens may be glass lenses or plastic lenses. The present application does not specifically limit the specific number of glass lenses and plastic lenses. The optical lens made of glass can suppress the shift of the back focal length of the optical lens with temperature change, 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 ninth lens may all be glass aspherical lenses. In application scenarios with lower requirements for temperature stability, the first lens to the ninth lens in the optical lens may also all be made of plastic. Making the optical lens with plastic can effectively reduce the manufacturing cost. Of course, the first lens to the ninth lens in the optical lens may also be made of a combination of plastic and glass.

[0067] The optical lens according to the above embodiment of the present application has at least one beneficial effect such as a large field of view, a short overall length, a high light flux, miniaturization, high resolution, a long focal length, a long back focal length, and small distortion through reasonable setting of parameters such as the shape and optical power of each lens.

[0068] However, those skilled in the art should understand that without departing from the technical solution claimed in the present application, the number of lenses constituting the lens can be changed to obtain the various results and advantages described in this specification. For example, although the description in the embodiment is based on nine lenses, the optical lens is not limited to including nine lenses. If necessary, the optical lens may further include other numbers of lenses. The following further describes specific embodiments of the optical lens applicable to the above embodiment with reference to the drawings.

[0069] Embodiment 1

[0070] 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.

[0071] As Figure 1 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side.

[0072] The first lens L1 has a positive optical power, its first side S1 is convex, and its second side S2 is concave.

[0073] The second lens L2 has a negative optical power, its first side S3 is convex, and its second side S4 is concave.

[0074] The third lens L3 has a positive optical power, its first side S5 is convex, and its second side S6 is concave.

[0075] The fourth lens L4 has a negative optical power, its first side S7 is convex, and its second side S8 is concave.

[0076] The fifth lens L5 has a positive optical power, its first side S9 is concave, and its second side S10 is convex.

[0077] The sixth lens L6 has a negative optical power, its first side S10 is concave, and its second side S11 is concave.

[0078] The seventh lens L7 has a positive optical power, its first side S12 is concave, and its second side S13 is convex.

[0079] The eighth lens L8 has a positive optical power, its first side S14 is convex, and its second side S15 is convex.

[0080] The ninth lens L9 has a positive optical power, its first side S16 is convex, and its second side S17 is convex.

[0081] Among them, the fifth lens L5 can be cemented with the sixth lens L6 to form a cemented component.

[0082] The optical lens may further include a stop STO, and the stop STO can be disposed between the fourth lens L4 and the fifth lens L5.

[0083] Optionally, the optical lens may further include a filter having a first side S18 and a second side S19, a first protective glass having a first side S20 and a second side S21, and a second protective glass having a first side S22 and a second side IMA.

[0084] 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 1In the following, IMA represents the imaging surface. Light from the object sequentially passes through each surface S1 to S22 and finally forms an image on the imaging surface IMA provided on the second side. Wherein, an image sensing chip is provided at the imaging surface. It should be understood that the optical lens provided in the present application can also be used as, for example, a projection lens or a transmitting end lens of a lidar. At this time, Figure 1 In the following, IMA represents the light source surface. Light from the light source surface sequentially passes through each surface S22 to S1 and finally projects onto the first side, and forms an image or an illuminated area on the first side.

[0085] 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.

[0086] Table 1

[0087]

[0088] Example 2

[0089] The following refers to Figure 2 The optical lens according to Embodiment 2 of the present application is described. In this embodiment, for the sake of simplicity, some descriptions similar to those in Embodiment 1 will be omitted. Figure 2 The structural schematic diagram of the optical lens according to Embodiment 2 of the present application is shown.

[0090] As Figure 2 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side. The surface types and positive and negative of the optical powers of the lenses of the optical lens of Example 2 are the same as those of Example 1.

[0091] Table 2 shows the parameters of each lens of the optical lens of Example 2.

[0092] Table 2

[0093]

[0094] Example 3

[0095] The following refers to Figure 3 The optical lens according to Embodiment 3 of the present application is described. In this embodiment, for the sake of simplicity, some descriptions similar to those in Embodiment 1 will be omitted. Figure 3 The structural schematic diagram of the optical lens according to Embodiment 3 of the present application is shown.

[0096] 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side. The difference between the lens surface shapes and the positive and negative of the optical power of the optical lens in Embodiment 3 and those in Embodiment 1 is that the second side surface S2 of the first lens L1 is a plane, and the first side surface S12 of the seventh lens L7 is a plane.

[0097] Table 3 shows the parameters of each lens of the optical lens in Embodiment 3.

[0098] Table 3

[0099]

[0100] Embodiment 4

[0101] The following refers to Figure 4 The optical lens according to Embodiment 4 of the present application is described. In this embodiment, for the sake of simplicity, some descriptions similar to those in Embodiment 1 will be omitted. Figure 4 The structural schematic diagram of the optical lens according to Embodiment 4 of the present application is shown.

[0102] As Figure 4 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side. The lens surface shapes and the positive and negative of the optical power of the optical lens in Embodiment 4 are the same as those in Embodiment 3.

[0103] Table 4 shows the parameters of each lens of the optical lens in Embodiment 4.

[0104] Table 4

[0105]

[0106] Embodiment 5

[0107] The following refers to Figure 5 The optical lens according to Embodiment 5 of the present application is described. In this embodiment, for the sake of simplicity, some descriptions similar to those in Embodiment 1 will be omitted. Figure 5 The structural schematic diagram of the optical lens according to Embodiment 5 of the present application is shown.

[0108] As Figure 5As 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side. The difference in the surface shape and the sign of the optical power of each lens of the optical lens of Example 5 from that of Example 1 is that the second side S2 of the first lens L1 is a convex surface, the first side S3 of the second lens L2 is a flat surface, and the second side S6 of the third lens L3 is a convex surface.

[0109] Table 5 shows the parameters of each lens of the optical lens of Example 5.

[0110] Table 5

[0111]

[0112] Example 6

[0113] The following refers to Figure 6 The optical lens according to Embodiment 6 of the present application is described. In this embodiment, for the sake of simplicity, some descriptions similar to those of Example 1 will be omitted. Figure 6 The structural schematic diagram of the optical lens according to Embodiment 6 of the present application is shown.

[0114] As Figure 6 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side. The surface shape and the sign of the optical power of each lens of the optical lens of Example 6 are the same as those of Example 5.

[0115] Table 6 shows the parameters of each lens of the optical lens of Example 6.

[0116] Table 6

[0117]

[0118] Example 7

[0119] The following refers to Figure 7 The optical lens according to Embodiment 7 of the present application is described. In this embodiment, for the sake of simplicity, some descriptions similar to those of Example 1 will be omitted. Figure 7 The structural schematic diagram of the optical lens according to Embodiment 7 of the present application is shown.

[0120] As Figure 7As 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side. The difference between the lens surface shapes and the positive and negative of the optical power of the optical lens in Embodiment 7 and those in Embodiment 1 is that the first side S1 of the first lens L1 is a plane, the second side S2 is a convex surface, and the second side S6 of the third lens L3 is a plane.

[0121] Table 7 shows the parameters of each lens of the optical lens in Embodiment 7.

[0122] Table 7

[0123]

[0124] Embodiment 8

[0125] The following refers to Figure 8 to describe the optical lens according to Embodiment 8 of the present application. In this embodiment, for the sake of simplicity, some descriptions similar to those in Embodiment 1 will be omitted. Figure 8 shows a schematic structural diagram of the optical lens according to Embodiment 8 of the present application.

[0126] As Figure 8 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side. The lens surface shapes and the positive and negative of the optical power of the optical lens in Embodiment 8 are the same as those in Embodiment 7.

[0127] Table 8 shows the parameters of each lens of the optical lens in Embodiment 8.

[0128] Table 8

[0129]

[0130] Embodiment 9

[0131] The following refers to Figure 9 to describe the optical lens according to Embodiment 9 of the present application. In this embodiment, for the sake of simplicity, some descriptions similar to those in Embodiment 1 will be omitted. Figure 9 shows a schematic structural diagram of the optical lens according to Embodiment 9 of the present application.

[0132] As Figure 9As 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side. The difference between the lens surface shapes and the signs of the optical powers of the lenses of the optical lens of Example 9 and those of Example 1 is that the first side S1 of the first lens L1 is concave and the second side S2 is convex, and the second side S6 of the third lens L3 is convex.

[0133] Table 9 shows the parameters of the lenses of the optical lens of Example 9.

[0134] Table 9

[0135]

[0136] Example 10

[0137] The following refers to Figure 10 The optical lens according to Embodiment 10 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to those of Example 1 will be omitted. Figure 10 The structural schematic diagram of the optical lens according to Embodiment 10 of the present application is shown.

[0138] As Figure 10 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side. The lens surface shapes and the signs of the optical powers of the lenses of the optical lens of Example 10 are the same as those of Example 9.

[0139] Table 10 shows the parameters of the lenses of the optical lens of Example 10.

[0140] Table 10

[0141]

[0142] Example 11

[0143] The following refers to Figure 11 The optical lens according to Embodiment 11 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to those of Example 1 will be omitted. Figure 11 The structural schematic diagram of the optical lens according to Embodiment 11 of the present application is shown.

[0144] As Figure 11As 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side. The difference between the lens surface shapes and the positive and negative of the optical power of the optical lens in Embodiment 11 and those in Embodiment 1 is that the second side surface S2 of the first lens L1 is a convex surface, the first side surface S5 of the third lens L3 is a flat surface, and the second side surface S6 is a convex surface.

[0145] Table 11 shows the parameters of each lens of the optical lens in Embodiment 11.

[0146] Table 11

[0147]

[0148] Embodiment 12

[0149] The following refers to Figure 12 The optical lens according to Embodiment 12 of the present application is described. In this embodiment, for the sake of simplicity, some descriptions similar to those in Embodiment 1 will be omitted. Figure 12 The structural schematic diagram of the optical lens according to Embodiment 12 of the present application is shown.

[0150] As Figure 12 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side. The lens surface shapes and the positive and negative of the optical power of the optical lens in Embodiment 12 are the same as those in Embodiment 11.

[0151] Table 12 shows the parameters of each lens of the optical lens in Embodiment 12.

[0152] Table 12

[0153]

[0154] Embodiment 13

[0155] The following refers to Figure 13 The optical lens according to Embodiment 13 of the present application is described. In this embodiment, for the sake of simplicity, some descriptions similar to those in Embodiment 1 will be omitted. Figure 13 The structural schematic diagram of the optical lens according to Embodiment 13 of the present application is shown.

[0156] As Figure 13As 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side. The difference between the lens surface shapes and the positive and negative of the optical power of the optical lens of Example 13 and those of Example 1 is that the first side S5 of the third lens L3 is concave and the second side S6 is convex.

[0157] Table 13 shows the parameters of each lens of the optical lens of Example 13.

[0158] Table 13

[0159]

[0160] Example 14

[0161] The following refers to Figure 14 The optical lens according to Embodiment 14 of the present application is described. In this embodiment, for the sake of simplicity, some descriptions similar to those of Embodiment 1 will be omitted. Figure 14 The structural schematic diagram of the optical lens according to Embodiment 14 of the present application is shown.

[0162] As Figure 14 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side. The lens surface shapes and the positive and negative of the optical power of the optical lens of Example 14 are the same as those of Example 13.

[0163] Table 14 shows the parameters of each lens of the optical lens of Example 14.

[0164] Table 14

[0165]

[0166] Example 15

[0167] The following refers to Figure 15 The optical lens according to Embodiment 15 of the present application is described. In this embodiment, for the sake of simplicity, some descriptions similar to those of Embodiment 1 will be omitted. Figure 15 The structural schematic diagram of the optical lens according to Embodiment 15 of the present application is shown.

[0168] As Figure 15As 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side. The difference between the lens surface shapes and the positive and negative of the optical power of the optical lens in Embodiment 15 and those in Embodiment 1 is that the second side S2 of the first lens L1 is a convex surface, the second side S6 of the third lens L3 is a convex surface, the first side S7 of the fourth lens L4 is a concave surface, the second side S8 is a flat surface, and the first side S12 of the seventh lens L7 is a convex surface.

[0169] Table 15 shows the parameters of each lens of the optical lens in Embodiment 15.

[0170] Table 15

[0171]

[0172] In this embodiment, the first side S1 and the second side S2 of the first lens L1, and the first side S16 and the second side S17 of the ninth lens may be aspherical surfaces. The surface shapes of each aspherical lens can be defined by, but are not limited to, the following aspherical formula:

[0173]

[0174] Where x is the sagitta of the distance from the vertex of the aspherical surface when the aspherical surface is at a position with a height of h along the optical axis direction; 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 16 below gives the conic coefficient k and the higher-order term coefficients A4, A6 that can be used for the aspherical surfaces S1, S2, S16, and S17 in Embodiment 15.

[0175] Table 16

[0176]

[0177] Embodiment 16

[0178] The following refers to Figure 16 describes the optical lens according to Embodiment 16 of the present application. In this embodiment, for the sake of simplicity, some descriptions similar to those in Embodiment 1 will be omitted. Figure 16 shows a schematic structural diagram of the optical lens according to Embodiment 16 of the present application.

[0179] As Figure 16As 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side. The lens surface types and the positive and negative of the optical power of the optical lens of Example 16 are the same as those of Example 15.

[0180] Table 17 shows the parameters of each lens of the optical lens of Example 16. Table 18 shows the parameters of the aspherical lenses that can be used in Example 16, where each aspherical surface type can be defined by formula (1) given in the above Example 15.

[0181] Table 17

[0182]

[0183] Table 18

[0184]

[0185] Example 17

[0186] The following refers to Figure 17 The optical lens according to Embodiment 17 of the present application is described. In this embodiment, for the sake of simplicity, some descriptions similar to those in Embodiment 1 will be omitted. Figure 17 The structural schematic diagram of the optical lens according to Embodiment 17 of the present application is shown.

[0187] As Figure 17 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side. The difference between the lens surface types and the positive and negative of the optical power of the optical lens of Example 17 and those of Example 1 is that the first side surface S7 of the fourth lens L4 is a plane.

[0188] Table 19 shows the parameters of each lens of the optical lens of Example 17.

[0189] Table 19

[0190]

[0191] Example 18

[0192] The following refers to Figure 18 The optical lens according to Embodiment 18 of the present application is described. In this embodiment, for the sake of simplicity, some descriptions similar to those in Embodiment 1 will be omitted. Figure 18 The structural schematic diagram of the optical lens according to Embodiment 18 of the present application is shown.

[0193] AsFigure 18 As 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side. The lens surface shapes and the signs of the optical powers of the lenses of the optical lens of Embodiment 18 are the same as those of Embodiment 17.

[0194] Table 20 shows the parameters of the lenses of the optical lens of Embodiment 18.

[0195] Table 20

[0196]

[0197] Embodiment 19

[0198] The following refers to Figure 19 the optical lens according to Embodiment 19 of the present application is described. In this embodiment, for the sake of simplicity, some descriptions similar to those of Embodiment 1 will be omitted. Figure 19 The structural schematic diagram of the optical lens according to Embodiment 19 of the present application is shown.

[0199] 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side. The difference between the lens surface shapes and the signs of the optical powers of the lenses of the optical lens of Embodiment 19 and those of Embodiment 1 is that the second side surface S2 of the first lens L1 is a plane, the second side surface S6 of the third lens L3 is a convex surface, and the first side surface S7 of the fourth lens L4 is a concave surface.

[0200] Table 21 shows the parameters of the lenses of the optical lens of Embodiment 19.

[0201] Table 21

[0202]

[0203] Embodiment 20

[0204] The following refers to Figure 20 the optical lens according to Embodiment 20 of the present application is described. In this embodiment, for the sake of simplicity, some descriptions similar to those of Embodiment 1 will be omitted. Figure 20 The structural schematic diagram of the optical lens according to Embodiment 20 of the present application is shown.

[0205] As Figure 20As 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side. The lens surface types and the positive and negative of the optical power of the optical lens in Embodiment 20 are the same as those in Embodiment 19.

[0206] Table 22 shows the parameters of each lens of the optical lens in Embodiment 20.

[0207] Table 22

[0208]

[0209] Embodiment 21

[0210] The following refers to Figure 21 to describe the optical lens according to Embodiment 21 of the present application. In this embodiment, for the sake of simplicity, some descriptions similar to those in Embodiment 1 will be omitted. Figure 21 shows a schematic structural diagram of the optical lens according to Embodiment 21 of the present application.

[0211] 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side. The difference between the lens surface types and the positive and negative of the optical power of the optical lens in Embodiment 21 and those in Embodiment 1 is that the second side S2 of the first lens L1 is a convex surface, the second side S6 of the third lens L3 is a convex surface, the first side S7 of the fourth lens L4 is a concave surface and the second side S8 is a convex surface, and the first side S12 of the seventh lens L7 is a convex surface.

[0212] Table 23 shows the parameters of each lens of the optical lens in Embodiment 21. Table 24 shows the parameters of the aspherical lenses that can be used in Embodiment 21, where each aspherical surface type can be defined by the formula (1) given in Embodiment 15 above.

[0213] Table 23

[0214]

[0215] Table 24

[0216]

[0217] Embodiment 22

[0218] The following refers to Figure 22 to describe the optical lens according to Embodiment 22 of the present application. In this embodiment, for the sake of simplicity, some descriptions similar to those in Embodiment 1 will be omitted.Figure 22 The structural schematic diagram of an optical lens according to Embodiment 22 of the present application is shown.

[0219] As Figure 22 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side. The lens surface types and the positive and negative of the optical power of each lens of the optical lens in Embodiment 22 are the same as those in Embodiment 21.

[0220] Table 25 shows the parameters of each lens of the optical lens in Embodiment 22. Table 26 shows the parameters of the aspherical lenses that can be used in Embodiment 22, wherein each aspherical surface type can be defined by formula (1) given in Embodiment 15 above.

[0221] Table 25

[0222]

[0223] Table 26

[0224]

[0225] Embodiment 23

[0226] The following Figure 23 describes an optical lens according to Embodiment 23 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 The structural schematic diagram of an optical lens according to Embodiment 23 of the present application is shown.

[0227] 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side. The difference between the lens surface types and the positive and negative of the optical power of each lens of the optical lens in Embodiment 23 and those in Embodiment 1 is that the second side surface S2 of the first lens L1 is a plane, the second side surface S11 of the sixth lens L6 is a plane, and the first side surface S14 of the eighth lens L8 is a plane.

[0228] Table 27 shows the parameters of each lens of the optical lens in Embodiment 23.

[0229] Table 27

[0230]

[0231] Embodiment 24

[0232] The following Figure 24Describes an optical lens according to Embodiment 24 of the present application. In this embodiment, for the sake of brevity, some descriptions similar to those in Embodiment 1 will be omitted. Figure 24 Shows a schematic structural diagram of an optical lens according to Embodiment 24 of the present application.

[0233] As Figure 24 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side. The surface shapes and positive / negative powers of the lenses of the optical lens in Embodiment 24 are the same as those in Embodiment 23.

[0234] Table 28 shows the parameters of the lenses of the optical lens in Embodiment 24.

[0235] Table 28

[0236]

[0237] Embodiment 25

[0238] The following refers to Figure 25 Describes an optical lens according to Embodiment 25 of the present application. In this embodiment, for the sake of brevity, some descriptions similar to those in Embodiment 1 will be omitted. Figure 25 Shows a schematic structural diagram of an optical lens according to Embodiment 25 of the present application.

[0239] 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side. The difference between the surface shapes and positive / negative powers of the lenses of the optical lens in Embodiment 25 and those in Embodiment 1 is that the second side S2 of the first lens L1 is convex, the second side S11 of the sixth lens L6 is convex, and the first side S14 of the eighth lens L8 is flat.

[0240] Table 29 shows the parameters of the lenses of the optical lens in Embodiment 25.

[0241] Table 29

[0242]

[0243] Embodiment 26

[0244] The following refers to Figure 26 Describes an optical lens according to Embodiment 26 of the present application. In this embodiment, for the sake of brevity, some descriptions similar to those in Embodiment 1 will be omitted. Figure 26Shows a schematic structural diagram of an optical lens according to Embodiment 26 of the present application.

[0245] As Figure 26 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 from the first side to the second side along the optical axis. The lens surface types and the positive and negative of the optical power of each lens of the optical lens in Embodiment 26 are the same as those in Embodiment 25.

[0246] Table 30 shows the parameters of each lens of the optical lens in Embodiment 26.

[0247] Table 30

[0248]

[0249] Embodiment 27

[0250] The following refers to Figure 27 to describe an optical lens according to Embodiment 27 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 an optical lens according to Embodiment 27 of the present application.

[0251] 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 from the first side to the second side along the optical axis. The difference in the lens surface types and the positive and negative of the optical power of each lens of the optical lens in Embodiment 27 from those in Embodiment 1 is that the second side surface S2 of the first lens L1 is a plane, the first side surface S12 of the seventh lens L7 is a convex surface, and the first side surface S14 of the eighth lens L8 is a plane.

[0252] Table 31 shows the parameters of each lens of the optical lens in Embodiment 27.

[0253] Table 31

[0254]

[0255] Embodiment 28

[0256] The following refers to Figure 28 to describe an optical lens according to Embodiment 28 of the present application. In this embodiment, for the sake of simplicity, some descriptions similar to those in Embodiment 1 will be omitted. Figure 28 Shows a schematic structural diagram of an optical lens according to Embodiment 28 of the present application.

[0257] As Figure 28As 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side. The surface shapes and positive / negative powers of the lenses of the optical lens of Example 28 are the same as the differences of those of Example 27.

[0258] Table 32 shows the parameters of the lenses of the optical lens of Example 28.

[0259] Table 32

[0260]

[0261] Example 29

[0262] The following refers to Figure 29 and describes the optical lens according to Embodiment 29 of the present application. In this embodiment, for the sake of simplicity, some descriptions similar to those of Embodiment 1 will be omitted. Figure 29 Fig. shows a schematic structural diagram of the optical lens according to Embodiment 29 of the present application.

[0263] 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side. The surface shapes and positive / negative powers of the lenses of the optical lens of Example 29 are different from those of Example 1 in that the second side surface S2 of the first lens L1 is a plane, and the second side surface S15 of the eighth lens L8 is a plane.

[0264] Table 33 shows the parameters of the lenses of the optical lens of Example 29.

[0265] Table 33

[0266]

[0267] Example 30

[0268] The following refers to Figure 30 and describes the optical lens according to Embodiment 30 of the present application. In this embodiment, for the sake of simplicity, some descriptions similar to those of Embodiment 1 will be omitted. Figure 30 Fig. shows a schematic structural diagram of the optical lens according to Embodiment 30 of the present application.

[0269] As Figure 30As 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side. The lens surface types and the positive and negative of the optical power of each lens of the optical lens of Embodiment 30 are the same as those of Embodiment 29.

[0270] Table 34 shows the parameters of each lens of the optical lens of Embodiment 30.

[0271] Table 34

[0272]

[0273] Embodiment 31

[0274] The following refers to Figure 31 The optical lens according to Embodiment 31 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to those of Embodiment 1 will be omitted. Figure 31 The structural schematic diagram of the optical lens according to Embodiment 31 of the present application is shown.

[0275] 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side. The difference between the lens surface types and the positive and negative of the optical power of each lens of the optical lens of Embodiment 31 and those of Embodiment 1 is that the second side surface S2 of the first lens L1 is a plane, and the second side surface S15 of the eighth lens L8 is a concave surface.

[0276] Table 35 shows the parameters of each lens of the optical lens of Embodiment 31.

[0277] Table 35

[0278]

[0279] Embodiment 32

[0280] The following refers to Figure 32 The optical lens according to Embodiment 32 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to those of Embodiment 1 will be omitted. Figure 32 The structural schematic diagram of the optical lens according to Embodiment 32 of the present application is shown.

[0281] As Figure 32As 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side. The surface profiles and the positive and negative of the optical powers of the lenses of the optical lens of Example 32 are the same as those of Example 31.

[0282] Table 36 shows the parameters of the lenses of the optical lens of Example 32.

[0283] Table 36

[0284]

[0285] Example 33

[0286] The following refers to Figure 33 and describes the optical lens according to Embodiment 33 of the present application. In this embodiment, for the sake of brevity, some descriptions similar to those of Embodiment 1 will be omitted. Figure 33 FIG. shows a schematic structural diagram of the optical lens according to Embodiment 33 of the present application.

[0287] As Figure 33 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side. The difference between the surface profiles and the positive and negative of the optical powers of the lenses of the optical lens of Example 33 and those of Embodiment 1 is that the second side surface S2 of the first lens L1 is a plane, and the first side surface S16 of the ninth lens L9 is a plane.

[0288] Table 37 shows the parameters of the lenses of the optical lens of Example 33.

[0289] Table 37

[0290]

[0291] Example 34

[0292] The following refers to Figure 34 and describes the optical lens according to Embodiment 34 of the present application. In this embodiment, for the sake of brevity, some descriptions similar to those of Embodiment 1 will be omitted. Figure 34 FIG. shows a schematic structural diagram of the optical lens according to Embodiment 34 of the present application.

[0293] As Figure 34As 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side. The lens surface types and the signs of the optical powers of the lenses of the optical lens of Embodiment 34 are the same as those of Embodiment 33.

[0294] Table 38 shows the parameters of the lenses of the optical lens of Embodiment 34.

[0295] Table 38

[0296]

[0297] Embodiment 35

[0298] The following refers to Figure 35 The optical lens according to Embodiment 35 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to those of Embodiment 1 will be omitted. Figure 35 The schematic structural diagram of the optical lens according to Embodiment 35 of the present application is shown.

[0299] As Figure 35 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side. The difference between the lens surface types and the signs of the optical powers of the lenses of the optical lens of Embodiment 35 and those of Embodiment 1 is that the second side surface S2 of the first lens L1 is a plane, and the first side surface S16 of the ninth lens L9 is a concave surface.

[0300] Table 39 shows the parameters of the lenses of the optical lens of Embodiment 35.

[0301] Table 39

[0302]

[0303] Embodiment 36

[0304] The following refers to Figure 36 The optical lens according to Embodiment 36 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to those of Embodiment 1 will be omitted. Figure 36 The schematic structural diagram of the optical lens according to Embodiment 36 of the present application is shown.

[0305] As Figure 36As 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side. The lens surface types and the positive and negative of the optical power of each lens of the optical lens of Embodiment 36 are the same as those of Embodiment 35.

[0306] Table 40 shows the parameters of each lens of the optical lens of Embodiment 36.

[0307] Table 40

[0308]

[0309] Embodiment 37

[0310] The following refers to Figure 37 The optical lens according to Embodiment 37 of the present application is described. In this embodiment, for the sake of simplicity, some descriptions similar to those of Embodiment 1 will be omitted. Figure 37 The structural schematic diagram of the optical lens according to Embodiment 37 of the present application is shown.

[0311] As Figure 37 As 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side. The difference between the lens surface types and the positive and negative of the optical power of each lens of the optical lens of Embodiment 37 and those of Embodiment 1 is that the second side S2 of the first lens L1 is a convex surface, the first side S12 of the seventh lens L7 is a convex surface, and the second side S17 of the ninth lens L9 is a flat surface.

[0312] Table 41 shows the parameters of each lens of the optical lens of Embodiment 37.

[0313] Table 41

[0314]

[0315] Embodiment 38

[0316] The following refers to Figure 38 The optical lens according to Embodiment 38 of the present application is described. In this embodiment, for the sake of simplicity, some descriptions similar to those of Embodiment 1 will be omitted. Figure 38 The structural schematic diagram of the optical lens according to Embodiment 38 of the present application is shown.

[0317] As Figure 38As 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side. The surface shapes and the positive and negative of the optical powers of the lenses of the optical lens of Embodiment 38 are the same as those of Embodiment 37.

[0318] Table 42 shows the parameters of the lenses of the optical lens of Embodiment 38.

[0319] Table 42

[0320]

[0321] Embodiment 39

[0322] The following refers to Figure 39 and describes the optical lens according to Embodiment 39 of the present application. In this embodiment, for the sake of simplicity, some descriptions similar to those of Embodiment 1 will be omitted. Figure 39 shows a schematic structural diagram of the optical lens according to Embodiment 39 of the present application.

[0323] As Figure 39 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side. The difference between the surface shapes and the positive and negative of the optical powers of the lenses of the optical lens of Embodiment 39 and those of Embodiment 1 is that the second side S2 of the first lens L1 is convex, the first side S12 of the seventh lens L7 is convex, and the second side S17 of the ninth lens L9 is concave.

[0324] Table 43 shows the parameters of the lenses of the optical lens of Embodiment 39.

[0325] Table 43

[0326]

[0327] Embodiment 40

[0328] The following refers to Figure 40 and describes the optical lens according to Embodiment 40 of the present application. In this embodiment, for the sake of simplicity, some descriptions similar to those of Embodiment 1 will be omitted. Figure 40 shows a schematic structural diagram of the optical lens according to Embodiment 40 of the present application.

[0329] As Figure 40As 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side. The lens surface shapes and the signs of the optical powers of the lenses of the optical lens of Example 40 are the same as those of Example 39.

[0330] Table 44 shows the parameters of the lenses of the optical lens of Example 40.

[0331] Table 44

[0332]

[0333] Example 41

[0334] The following refers to Figure 40 to describe the optical lens according to Embodiment 41 of the present application. In this embodiment, for the sake of simplicity, some descriptions similar to those of Embodiment 1 will be omitted. Figure 41 shows a schematic structural diagram of the optical lens according to Embodiment 41 of the present application.

[0335] As Figure 41 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, a seventh lens L7, an eighth lens L8, and a ninth lens L9 along the optical axis from the first side to the second side.

[0336] The first lens L1 has a positive optical power, its first side surface S1 is a convex surface, and its second side surface S2 is a concave surface.

[0337] The second lens L2 has a negative optical power, its first side surface S3 is a convex surface, and its second side surface S4 is a concave surface.

[0338] The third lens L3 has a positive optical power, its first side surface S5 is a convex surface, and its second side surface S6 is a concave surface.

[0339] The fourth lens L4 has a negative optical power, its first side surface S7 is a convex surface, and its second side surface S8 is a concave surface.

[0340] The fifth lens L5 has a positive optical power, its first side surface S9 is a concave surface, and its second side surface S10 is a convex surface.

[0341] The sixth lens L6 has a negative optical power, its first side surface S11 is a concave surface, and its second side surface S12 is a concave surface.

[0342] The seventh lens L7 has a positive optical power, its first side surface S13 is a concave surface, and its second side surface S14 is a convex surface.

[0343] The eighth lens L8 has a positive optical power, its first side S15 is convex, and its second side S16 is convex.

[0344] The ninth lens L9 has a positive optical power, its first side S17 is convex, and its second side S18 is convex.

[0345] The optical lens may further include a diaphragm STO, and the diaphragm STO may be disposed between the fourth lens L4 and the fifth lens L5.

[0346] Optionally, the optical lens may further include a filter having a first side S19 and a second side S20, a first protective glass having a first side S21 and a second side S22, and a second protective glass having a first side S23 and a second side IMA.

[0347] The optical lens provided in this application can be used as, for example, a vehicle-mounted lens or a receiving end lens of a lidar. At this time, Figure 41 where IMA represents the imaging surface, and the light from the object sequentially passes through the surfaces S1 to S23 and finally forms an image on the imaging surface IMA provided on the second side. Among them, an image sensing chip is provided 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 transmitting end lens of a lidar. At this time, Figure 41 where IMA represents the light source surface, and the light from the light source surface sequentially passes through the surfaces S23 to S1 and finally projects to the first side and forms an image or an illuminated area on the first side.

[0348] Table 45 shows the parameters of each lens of the optical lens of Example 41.

[0349] Table 45

[0350]

[0351] In summary, Examples 1 to 41 respectively satisfy the relationships shown in Tables 45-1, 45-2, 45-3, and 45-4 below. In Tables 45-1, 45-2, 45-3, and 45-4, the units of F, ENPD, TTL, TL, BFL, H, BFL, F1~F9, F7-9, DST, and D are millimeters (mm), the unit of FOV is degrees (°), and the unit of θ is radians (rad).

[0352] Table 45-1

[0353]

[0354]

[0355] Table 45-2

[0356]

[0357]

[0358] Table 45-3

[0359]

[0360]

[0361] Table 45-4

[0362]

[0363]

[0364] 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 ranging camera, or an imaging module integrated on a ranging device such as a ranging 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 auxiliary driving system such as an auxiliary 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.

[0365] The above description is only a preferred embodiment of the present application and an explanation of the applied technical principle. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by the specific combination of the above technical features, and 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, a technical solution formed by mutually replacing the above features with technical features having similar functions (but not limited to) disclosed in the present application.

Claims

1. An optical lens, characterized in that: The optical lens includes, in sequence from the first side to the second side along the optical axis: a first lens having positive optical power; A second lens having negative optical power, wherein the second side surface of the second lens is concave; a third lens having positive refractive power; a fourth lens having negative optical power; a fifth lens having positive refractive power, wherein the first side surface is concave and the second side surface is convex; a sixth lens element having negative optical power, wherein the first side surface of the sixth lens element is concave; a seventh lens element having positive refractive power, wherein the second side surface of the seventh lens element is convex; an eighth lens having positive refractive power; and a ninth lens having positive refractive power; The number of lenses with optical power in the optical lens is nine, and the optical lens satisfies: 2.8≤F1 / F≤20, -3≤F2 / F≤-0.8, Wherein, F is the total effective focal length of the optical lens, F1 is the effective focal length of the first lens, and F2 is the effective focal length of the second lens.

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

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

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

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

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

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

8. The optical lens according to claim 1, characterized in that: The first side surface of the second lens is a plane; Or the first side surface of the second lens is a convex surface, and the optical lens satisfies: 1.5≤R3 / R4≤30, Wherein, R3 is the curvature radius of the first side surface of the second lens, and R4 is the curvature radius of the second side surface of the second lens.

9. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: 3.42≤F5 / F≤135, Wherein, F is the total effective focal length of the optical lens, and F5 is the effective focal length of the fifth lens.

10. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: 50°≤(FOV×F) / H≤60°, Among them, F is the total effective focal length of the optical lens, H is the image height corresponding to the maximum field of view angle of the optical lens, and FOV is the maximum field of view angle of the optical lens.

11. The optical lens according to claim 1, characterized in that: A stop is provided between the fourth lens and the fifth lens, and the optical lens satisfies at least one of the following conditions: 2≤F / ENPD≤3,0.1mm -1 ≤F / ENPD / D≤0.19mm -1 ,0.45≤DST / F≤0.65, Among them, F is the total effective focal length of the optical lens, ENPD is the entrance pupil diameter of the optical lens, D is the maximum effective aperture of the optical lens, and DST is the aperture of the aperture.

12. The optical lens according to claim 1, characterized in that: The optical lens meets at least one of the following requirements: 4≤TTL / F≤6.2,0.1≤TTL / H / FOV×1°≤0.2,3rad -1 ≤TTL / H / θ≤12rad -1 ,2≤TTL / D≤5.5,0.8rad≥(F θ) / D≥0.4rad,0.02≤D / H / FOV×1°≤0.06,1.5rad -1 ≤D / H / θ≤3.5rad -1 ,0.05mm -1 ≤D / H / F≤0.25mm -1 , Among them, F is the total effective focal length of the optical lens, H is the image height corresponding to the maximum field of view angle of the optical lens, FOV is the maximum field of view angle of the optical lens, 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 D is the maximum effective aperture of the optical lens.

13. The optical lens according to claim 1, characterized in that: The optical lens meets at least one of the following requirements: 0.3≤BFL / TTL≤0.5, 0.4≤BFL / TL≤0.8, Among them, BFL is the optical back focus of the optical lens, TTL is the total optical length of the optical lens, and TL is the total lens length of the optical lens.

14. The optical lens according to claim 1, characterized in that: The optical lens meets at least one of the following requirements: 0.5≤R9 / R10≤6, 0.15≤F7 / F8≤1.2, 0.3≤F8 / F9≤6, 0.35≥(d10+d11) / TL≥0.02, 0.1≤d10 / d11≤2.5, 0.8≤F / H≤2, Among them, R10 is the curvature radius of the second side surface of the fifth lens, R9 is the curvature radius of the first side surface of the fifth lens, F7 is the effective focal length of the seventh lens, F8 is the effective focal length of the eighth lens, F9 is the effective focal length of the ninth lens, d11 is the center thickness of the sixth lens, d10 is the center thickness of the fifth lens, TL is the total lens length of the optical lens, H is the image height corresponding to the maximum field of view angle of the optical lens, and F is the total effective focal length of the optical lens.

15. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: 0.6≤F7-9 / F≤1.5, Wherein, F7-9 is the combined focal length of the seventh lens, the eighth lens and the ninth lens, and F is the total effective focal length of the optical lens.

16. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: -1.5≤R16 / R17≤0, Wherein, R16 is the curvature radius of the second side surface of the eighth lens, and R17 is the curvature radius of the first side surface of the ninth lens.

17. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: 300≥R16 / R17≥0.05, Wherein, R16 is the curvature radius of the second side surface of the eighth lens, and R17 is the curvature radius of the first side surface of the ninth lens.

18. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: -1≥R9 / F≥-20, Wherein, F is the total effective focal length of the optical lens, and R9 is the radius of curvature of the first side surface of the fifth lens.

19. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: 0.35≥d4-5 / TTL≥0.08, Wherein, d4-5 is the spacing distance between the fourth lens and the fifth lens along the optical axis, and TTL is the total optical length of the optical lens.

20. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: d56 / TTL≤0.02, Wherein, d56 is the spacing distance between the fifth lens and the sixth lens along the optical axis, and TTL is the total optical length of the optical lens.

21. The optical lens according to claim 1, characterized in that: The optical lens meets the following requirements: -10≤F4 / d4-5≤-0.5, Wherein, F4 is the effective focal length of the fourth lens, and d4-5 is the spacing distance between the fourth lens and the fifth lens along the optical axis.

22. The optical lens according to claim 1, characterized in that: The optical lens meets at least one of the following requirements: 1≤F3 / F≤8, -7≤F4 / F≤-0.5, -5≤F6 / F≤-1, Among them, F is the total effective focal length of the optical lens, F3 is the effective focal length of the third lens, F4 is the effective focal length of the fourth lens, and F6 is the effective focal length of the sixth lens.

23. The optical lens according to claim 1, characterized in that: The optical lens meets at least one of the following requirements: 54°≤(FOV×F) / H≤56°, 5.6≤TTL / F≤5.9, 0.16≤TTL / H / FOV×1°≤0.18, 9rad -1 ≤TTL / H / θ≤11rad -1 ,3.5≤TTL / D≤4.5,0.45rad≤(F θ) / D≤0.65rad,0.03≤D / H / FOV×1°≤0.05,2rad -1 ≤D / H / θ≤2.8rad -1 , 0.1mm -1 ≤D / H / F≤0.165mm -1 , 0.37≤BFL / TTL≤0.4, 0.6≤BFL / TL≤0.66, 1.27≤F / H≤1.31, 2.6≤F / ENPD≤2.9, 0.13mm -1 ≤F / ENPD / D≤0.18mm -1 , 3.6≤F1 / F≤17.47, -2.5≤F2 / F≤-1, 2.2≤R3 / R4≤25, 5≤F5 / F≤128, 1≤R9 / R10≤3.8, 0.2≤F7 / F8≤1, 0.64≤F8 / F9≤5.1, 0.94≤F7-9 / F≤1.22, -1≤R16 / R17≤0, 270≥R16 / R17≥0.08, 0.3≥d4-5 / TTL≥0.1, -2 .5≥R9 / F≥-17, 2≤F3 / F≤6.5, -6≤F4 / F≤-1, -4≤F6 / F≤-1.5, -8≤F4 / d4-5≤-0.8, 0.3≥(d10+d11) / TL≥0.04, 0.2≤d10 / d11≤2.1, d56 / TTL≤0.01, or a stop is provided between the fourth lens and the fifth lens, and the optical lens satisfies 0.54≤DST / F≤0.6, Wherein, 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, F5 is the effective focal length of the fifth lens, F6 is the effective focal length of the sixth lens, F7 is the effective focal length of the seventh lens, F8 is the effective focal length of the eighth lens, F9 is the effective focal length of the ninth lens, F7-9 is the combined focal length of the seventh lens, the eighth lens and the ninth lens, d11 is the center thickness of the sixth lens, d10 is the center thickness of the fifth lens, d4-5 is the spacing distance between the fourth lens and the fifth lens along the optical axis, d56 is the spacing distance between the fifth lens and the sixth lens along the optical axis, TL is the total lens length 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 optical back focus 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, ENPD is the entrance pupil diameter of the optical lens, D is the maximum effective aperture of the optical lens, DST is the aperture of the aperture, R3 is the curvature radius of the first side surface of the second lens, R4 is the curvature radius of the second side surface of the second lens, R8 is the curvature radius of the second side surface of the fourth lens, R10 is the curvature radius of the second side surface of the fifth lens, R9 is the curvature radius of the first side surface of the fifth lens, R16 is the curvature radius of the second side surface of the eighth lens, and R17 is the curvature radius of the first side surface of the ninth lens.

24. An electronic device, characterized in that: The optical lens comprises any one of claims 1 to 23, and comprises an imaging element for converting an optical image formed by the optical lens into an electrical signal, or comprises a light source.

Images