Optical lens and electronic equipment

Abstract

The invention discloses an optical lens and electronic equipment. The optical lens sequentially comprises a first lens, a second lens, a third lens and a fourth lens from a first side to a second side along an optical axis, the second lens has negative focal power, and the second side surface of the second lens is a concave surface; the third lens has positive focal power; the fourth lens has negative focal power; the first side surface of the fifth lens is a concave surface, and the second side surface of the fifth lens is a convex surface; the sixth lens has negative focal power, and the first side surface of the sixth lens is a concave surface; the second side surface of the seventh lens is a convex surface; the eighth lens has positive focal power; the ninth lens has positive focal power; the optical lens satisfies 2.8 < = F1 / F < = 20, and-3 < = F2 / F < =-0.8. The optical lens provided by the embodiment of the invention can realize small distortion.

Description

Technical Field

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

[0002] With the development of science and technology, the market has higher and higher requirements for optical lenses. For example, projection lenses among optical lenses, as an important component of projectors and PGUs (picture generation units), have become more and more stringent with the development of DMD (spatial light modulators) and LCOS (liquid crystal on silicon) chips.

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

[0004] One aspect of the present application provides an optical lens, which includes, in order from the first side to the second side along the optical axis: a first lens with positive focal power; a second lens with negative focal power, whose second side is concave; a third lens with positive focal power; a fourth lens with negative focal power; a fifth lens with positive focal power, whose first side is concave and whose second side is convex; a sixth lens with negative focal power, whose first side is concave; a seventh lens with positive focal power, whose second side is convex; an eighth lens with positive focal power; and a ninth lens with positive focal power; 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. By making the second lens have negative focal power, its first side is convex, and its second side is concave, this structure can offset the distortion caused by the two sides. Furthermore, the fifth lens has positive 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 maximum field of view of the rear lens group, which is also conducive to achieving small distortion. Furthermore, the first lens has positive power, which can introduce barrel distortion, so that the light trend is contracted. Compared with the pincushion distortion introduced when the first lens has negative power, the barrel distortion is better corrected, and thus this setting is also conducive to achieving small distortion. At the same time, the optical lens satisfies the conditional formula 2.8≤F1 / F≤20, which can further achieve small distortion of the optical lens. Furthermore, the first lens with positive power and the second lens with negative power are used in combination, and the optical lens satisfies -3≤F2 / F≤-0.8. The positive and negative distortions of the first lens and the second lens can offset each other, that is, the distortion can be corrected to achieve small distortion. That is, by combining the above structure and making the optical lens satisfy the above conditional expression, small distortion of the optical lens can be well achieved.

[0005] Another aspect of the present application provides an electronic device, comprising the optical lens of the above embodiment, and an imaging element for converting an optical image formed by the optical lens into an electrical signal, or a light source. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Other features, purposes and advantages of the present application will become more apparent through the following detailed description of the embodiments in conjunction with the accompanying drawings. In the accompanying drawings: Figures 1 to 41 Structural schematic diagrams of optical lenses according to Embodiments 1 to 41 of the present application are respectively shown. DETAILED DESCRIPTION

[0007] In order to facilitate the understanding of the present application, the present application will be described more comprehensively with reference to the relevant drawings below. It should be understood that these detailed descriptions are only descriptions of exemplary embodiments of the present application, and do not limit the scope of the present application in any way. Throughout the specification, the same figure numbers refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items. It should be noted that in this specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the features. Therefore, without departing from the teachings of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0008] In the drawings, the thickness, size and shape of the lenses have been slightly exaggerated for ease of explanation. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to the shapes of the spherical or aspherical surfaces shown in the drawings. The drawings are only examples and are not drawn strictly to scale.

[0009] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the first side is called the first side surface of the lens, the surface of each lens closest to the second side is called the second side surface of the lens, and the surface of the optical lens closest to the second side is called the second side surface of the optical lens.

[0010] It should be understood that the optical lens provided in this application can be used for both video and projection, and can also be used for laser radar lenses. When the optical lens provided in this application is used for a video lens or a laser radar receiving end lens, the video lens can be, for example, a vehicle-mounted camera, an infrared camera, a drone camera, a night vision camera, a security monitoring camera, etc., and the "first side" involved in this article can refer to the object side, and the "second side" can refer to the image side, and the light from the object side can be imaged on the image side; when the optical lens provided in this application is used for a projection lens or a radar transmitting end lens, the "first side" involved in this article can refer to the object side, and the "second side" can refer to the light source side, and the light from the light source side is projected to the first side after passing through the optical lens, and forms an image or illuminates the area on the first side.

[0011] It should also be understood that the terms "include", "comprising", "having", "including" and / or "comprising", when used in this specification, indicate the presence of the stated features, elements and / or parts, but do not exclude the presence or addition of one or more other features, elements, parts and / or combinations thereof. In addition, when a statement such as "at least one of..." appears after a list of listed features, it modifies the entire listed features rather than the individual elements in the list. In addition, when describing the embodiments of the present application, "may" is used to represent "one or more embodiments of the present application". And, the term "exemplary" is intended to refer to an example or illustration. Unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as those generally understood by ordinary technicians in the field to which the present application belongs. It should also be understood that terms (such as terms defined in commonly used dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined in this article.

[0012] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail with reference to the accompanying drawings and in combination with the embodiments. The features, principles and other aspects of the present application are described in detail below.

[0013] In an exemplary embodiment, the optical lens includes, for example, nine lenses having 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, which are arranged in sequence from the first side to the second side along the optical axis.

[0014] In an exemplary embodiment, the optical lens provided by the present application can be used as, for example, a vehicle-mounted lens or a laser radar receiving end lens. In this case, the first side of the optical lens can be the object side, and the second side can be the image side. Light from the object side can be imaged on the image side. The second side of the optical lens can be provided with an imaging surface of the optical lens.

[0015] In an exemplary embodiment, the optical lens provided in the present application can be used as, for example, a projection lens or a laser radar transmitting end lens, in which case the first side of the optical lens can be the object side, and the second side can be the light source side. Light from the light source side passes through the optical lens and is projected to the object side, and forms an image or illuminates an area on the object side, and the second side of the optical lens can be provided with a light source surface of the optical lens.

[0016] In an exemplary embodiment, the optical lens may further include a photosensitive element disposed on the second side surface. Optionally, the photosensitive element disposed on the second side surface may be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS).

[0017] In an exemplary embodiment, an aperture for limiting the light beam may be provided between the fourth lens and the fifth lens to further improve the imaging quality of the optical lens. The aperture is conducive to converging the light entering the optical system, balancing the aperture sizes of the lenses in the front and rear optical systems, and can achieve a small FNO of the optical lens while smoothing the light trend. However, it should be noted that the position of the aperture disclosed herein is only an example and not a limitation; in alternative embodiments, the aperture may also be set at other positions according to actual needs.

[0018] In an exemplary embodiment, the first lens may have positive power. The first lens has positive power, which may introduce barrel distortion, so that the light of the lens is contracted. Compared with the pincushion distortion introduced by the first lens with negative power, the barrel distortion is better corrected, which is conducive to achieving small distortion. In an exemplary embodiment, the first side of the first lens may be convex, and the second side may be concave. Making the first side of the first lens convex and the second side concave can make the aberrations complementary, which is conducive to achieving high resolution. In an exemplary embodiment, the first side of the first lens may be convex, and the second side may be convex. The second side of the first lens is convex, which can converge the light to the second lens, so that the light smoothly transitions to the imaging surface. In an exemplary embodiment, the first side of the first lens may be a plane, and the second side may be a convex surface. The first side of the first lens is a plane, which can transition the light to the second side of the first lens. In an exemplary embodiment, the first side of the first lens may be a concave surface, and the second side may be a convex surface. The first side of the first lens is a concave surface, and the second side is a convex surface, which can make the aberrations complementary, which is conducive to achieving high resolution. In an exemplary embodiment, the first side surface of the first lens may be a convex surface, and the second side surface may be a flat surface. The second side surface of the first lens is a flat surface, which can make the light smoothly transition to the second lens.

[0019] In an exemplary embodiment, the second lens may have a negative optical focal length, and its first side surface may be a convex surface, and its second side surface may be a concave surface. In an exemplary embodiment, the second lens may be meniscus-shaped as a whole. The second lens has a negative optical focal length and is in the shape of a meniscus, and its first side surface is a convex surface, and its second side surface is a concave surface, which can offset the distortion caused by the two surfaces. In this embodiment, the second lens can be matched with the first lens having a positive optical focal length, which is conducive to achieving small distortion. And the first side surface of the second lens is a convex surface, which can play a role in converging the light converged by the front optical system to the rear optical system. The second side surface of the second lens is a concave surface, which can play a role in reducing the divergence angle of the light entering the third lens.

[0020] In an exemplary embodiment, the third lens may have positive power. In this embodiment, the third lens has positive power, which can introduce barrel distortion, and the fourth lens may have negative power, which introduces pincushion distortion. The cooperation between the third lens and the fourth lens is conducive to achieving small distortion, and is conducive to achieving smaller aberrations, thereby achieving high resolution. In an exemplary embodiment, the first side surface of the third lens may be convex, and the second side surface may be concave. The first side surface of the third lens is convex, and the second side surface is concave, which can make the aberrations complementary, and is conducive to achieving high resolution. In an exemplary embodiment, the first side surface of the third lens may be convex, and the second side surface may be convex. The second side surface of the third lens is convex, which can play the role of converging light to the fourth lens, so that the light smoothly transitions to the imaging surface. In an exemplary embodiment, the first side surface of the third lens may be a plane, and the second side surface may be a convex surface. The first side surface of the third lens is a plane, which can play the role of transitioning light to the second side surface. In an exemplary embodiment, the first side surface of the third lens may be a concave surface, and the second side surface may be a convex surface. The first side surface of the third lens is a concave surface, and the second side surface is a convex surface, which can make the aberrations complementary, and is conducive to achieving high resolution. In an exemplary embodiment, the first side surface of the third lens may be a convex surface, and the second side surface may be a plane surface. The second side surface of the third lens is a plane surface, which can make the light smoothly transition to the fourth lens.

[0021] In an exemplary embodiment, the fourth lens may have a negative optical power. In this embodiment, the fourth lens has a negative optical power, which can introduce a pincushion distortion, and the third lens may have a positive optical power, which can introduce a barrel distortion. The fourth lens and the third lens cooperate to achieve small distortion and small aberration, thereby achieving high resolution. In an exemplary embodiment, the first side of the fourth lens may be a convex surface, and the second side may be a concave surface. The first side of the fourth lens is a convex surface, and the second side is a concave surface, which can make the aberrations complementary, thereby achieving high resolution. In an exemplary embodiment, the first side of the fourth lens may be a plane, and the second side may be a concave surface. The first side of the fourth lens is a plane, which can play a role in transitioning light to the second side of the fourth lens. The second side of the fourth lens is a concave surface, which can play a role in reducing the divergence angle of the light entering the fifth lens, thereby reducing the FOV (field of view of the optical lens) entering the rear group, and the aberration caused by the smaller FOV is conducive to achieving high resolution. In an exemplary embodiment, the first side of the fourth lens may be a concave surface, and the second side may be a concave surface. In this embodiment, the first side surface and the second side surface of the third lens can both be convex, and the first side surface and the second side surface of the fourth lens can both be concave, so that the surface shapes of the third lens and the fourth lens can be complementary, which is conducive to achieving small distortion and high resolution. In an exemplary embodiment, the first side surface of the fourth lens can be a concave surface, and the second side surface can be a plane. In this embodiment, the second side surface of the third lens can be a convex surface, and the first side surface of the fourth lens can be a concave surface, so that the aberrations of the second side surface of the third lens and the first side surface of the fourth lens can be complementary, which is conducive to achieving high resolution. The second side surface of the fourth lens is a plane, which can play the role of transition light to the fifth lens. In an exemplary embodiment, the first side surface of the fourth lens can be a concave surface, and the second side surface can be a convex surface. In this embodiment, the second side surface of the third lens can be a convex surface, and the first side surface of the fourth lens can be a concave surface, so that the aberrations of the second side surface of the third lens and the first side surface of the fourth lens can be complementary, which is conducive to achieving high resolution. And making the first side surface of the fourth lens concave and the second side surface convex can also make the aberrations complementary, which is conducive to achieving high resolution.

[0022] In an exemplary embodiment, the fifth lens may have positive power, and its first side surface may be concave and its second side surface may be convex. The fifth lens has positive power, and barrel distortion may be introduced at the maximum field of view of the rear group, which is conducive to achieving small distortion. The first side surface of the fifth lens is concave, and the second side surface is convex, so that the aberrations can be complementary, which is conducive to achieving high resolution.

[0023] In an exemplary embodiment, the sixth lens may have a negative focal length. The sixth lens has a negative focal length, which can collect light that tends to converge when passing through the front group and the sixth lens, and is conducive to properly diffusing the light, thereby making the light trend more stable, which is conducive to lengthening the back focus. In an exemplary embodiment, the first side surface of the sixth lens may be a concave surface, and the second side surface may be a concave surface. In this embodiment, the second side surface of the fifth lens may be a convex surface, so that the first side surface of the sixth lens is a concave surface, which can make the aberrations complementary, which is conducive to achieving high resolution. The second side surface of the sixth lens is a concave surface, which can diffuse the light, help increase the beam aperture, and is conducive to achieving high resolution. In an exemplary embodiment, the first side surface of the sixth lens may be a concave surface, and the second side surface may be a plane. In this embodiment, the second side surface of the fifth lens may be a convex surface, so that the first side surface of the sixth lens is a concave surface, which can make the aberrations complementary, which is conducive to achieving high resolution. The second side surface of the sixth lens is a plane, which can play the role of transitioning light to the seventh lens. In an exemplary embodiment, the first side surface of the sixth lens may be a concave surface, and the second side surface may be a convex surface. In this embodiment, the second side surface of the fifth lens can be a convex surface, and the first side surface of the sixth lens can be a concave surface, so that the aberrations can be complementary, which is conducive to achieving high resolution. In this embodiment, the first side surface of the seventh lens can be a concave surface, and the second side surface of the sixth lens can be a convex surface, so that the aberrations can be complementary, which is conducive to achieving high resolution.

[0024] In an exemplary embodiment, the seventh lens may have positive optical power. The seventh lens has positive optical power and can be matched with the eighth lens and the ninth lens (so that both the eighth lens and the ninth lens have positive optical power), that is, the lens close to the chip can bear a larger optical power, which is conducive to generating small-angle light on the chip side, which is conducive to achieving a small CRA and a long back focus. In an exemplary embodiment, the first side surface of the seventh lens may be a concave surface, and the second side surface may be a convex surface. The first side surface of the seventh lens is a concave surface, which can diffuse the light, help increase the beam aperture, and facilitate high resolution. The second side surface of the seventh lens is a convex surface, which can achieve the effect of converging light and facilitate long back focus. In an exemplary embodiment, the first side surface of the seventh lens may be a plane, and the second side surface may be a convex surface. The first side surface of the seventh lens is a plane, which can play a role in transitioning light to the second side surface of the seventh lens. The second side surface of the seventh lens is a convex surface, which can achieve the effect of converging light and facilitate long back focus. In an exemplary embodiment, the first side surface of the seventh lens may be a convex surface, and the second side surface may be a convex surface. The first side surface of the seventh lens is a plane, which can play a role in transitioning light to the second side surface of the seventh lens. The second side surface of the seventh lens is a convex surface, which can achieve the effect of converging light and facilitate long back focus. In an exemplary embodiment, the first side surface of the seventh lens may be a convex surface, and the second side surface may be a convex surface. In this embodiment, the second side surface of the sixth lens can be a concave surface, and the first side surface of the seventh lens can be a convex surface, so that the aberrations can be complementary, which is conducive to achieving high resolution. The second side surface of the seventh lens is a convex surface, which can achieve the effect of converging light and is conducive to achieving a long back focus.

[0025] In an exemplary embodiment, the eighth lens may have positive optical power. The eighth lens has positive optical power, and the optical power of the eighth lens is positive, which can further converge the light passing through the seventh lens, so that the light transitions smoothly, which is conducive to achieving a small CRA and a long back focus. In an exemplary embodiment, the first side surface of the eighth lens may be a convex surface, and the second side surface may be a concave surface. The first side surface of the eighth lens is a convex surface, which can further converge the light passing through the seventh lens, so that the light transitions smoothly, which is conducive to achieving a small CRA and a long back focus. In this embodiment, the first side surface of the ninth lens may be a concave surface, so that the second side surface of the eighth lens is a concave surface, which can make the aberrations complementary, which is conducive to achieving high resolution. In an exemplary embodiment, the first side surface of the eighth lens may be a convex surface, and the second side surface may be a convex surface. The first side surface and the second side surface of the eighth lens are both convex surfaces, which can make the optical power distribution of the two sides more uniform, so that the light can smoothly transition to the ninth lens. In an exemplary embodiment, the first side surface of the eighth lens may be a plane, and the second side surface may be a convex surface. The first side surface of the eighth lens is a plane, which can play a role in transitioning the light to the second side surface of the eighth lens. In an exemplary embodiment, the first side surface of the eighth lens may be a concave surface, and the second side surface may be a convex surface. The first side surface of the eighth lens is a concave surface, and the second side surface is a convex surface, which can make the aberrations complementary and facilitate high resolution. In an exemplary embodiment, the first side surface of the eighth lens can be a convex surface, and the second side surface can be a plane. The second side surface of the eighth lens is a plane, which can make the light smoothly transition to the ninth lens.

[0026] In an exemplary embodiment, the ninth lens may have positive focal power. The ninth lens has positive focal power, which can further converge the light passing through the eighth lens, so that the light transitions smoothly, which is conducive to achieving a small CRA and a long back focus. In an exemplary embodiment, the first side surface of the ninth lens may be a convex surface, and the second side surface may be a concave surface. The first side surface of the ninth lens is a convex surface, which can further converge the light passing through the eighth lens, so that the light transitions smoothly, which is conducive to achieving a small CRA and a long back focus. In this embodiment, the second side surface of the eighth lens may be a concave surface, and making the first side surface of the ninth lens convex can also make the aberrations complementary, which is conducive to achieving high resolution. In an exemplary embodiment, the first side surface of the ninth lens may be a convex surface, and the second side surface may be a convex surface. The first side surface and the second side surface of the ninth lens are both convex surfaces, which can make the focal power distribution of the two sides more uniform, so that the light can smoothly transition to the imaging surface. In an exemplary embodiment, the first side surface of the ninth lens may be a plane, and the second side surface may be a convex surface. The first side surface of the ninth lens is a plane, which can play a role in transitioning the light to the second side surface of the ninth lens. In an exemplary embodiment, the first side surface of the ninth lens may be a concave surface, and the second side surface may be a convex surface. The first side surface of the ninth lens is a concave surface, and the second side surface is a convex surface, which can make the aberrations complementary, which is conducive to achieving high resolution. In an exemplary embodiment, the first side surface of the ninth lens can be a convex surface, and the second side surface can be a plane. Making the second side surface of the ninth lens a plane can make the light smoothly transition to the imaging surface.

[0027] In an exemplary embodiment, at least one of the first to ninth lenses 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 imaging quality, the number of aspherical lenses can be increased, or even all lenses use aspherical lenses. The characteristic of an aspherical lens is that the curvature changes continuously from the center of the lens to the periphery. Unlike a spherical lens with a constant curvature from the center of the lens to the periphery, an aspherical lens has a better curvature radius characteristic, and has the advantages of improving distortion aberration and improving astigmatism aberration. After using an aspherical lens, the aberration that occurs during imaging can be eliminated as much as possible, thereby improving the imaging quality of the lens. The setting of an aspherical lens helps to correct system aberrations and improve resolution. In an exemplary embodiment, the second lens may be an aspherical lens, and at the same time one side surface of the second lens is concave and the other side surface is convex, so that the second lens as a whole is in a shape close to concentric circles, which is more conducive to reducing the sensitivity of the front lens group (the front lens group consisting of the first lens, the second lens, the third lens and the fourth lens) and improving the resolution. For example, the MTF function value at 60 lines / mm can be greater than 0.6.

[0028] In an exemplary embodiment, the fifth lens and the sixth lens can be glued to form a glued piece to better correct chromatic aberration and thus improve resolution, and the tolerance sensitivity of the fifth lens and the sixth lens after gluing can be reduced. In addition, gluing the sixth lens of the fifth lens can also smoothly transition the light passing through the front optical system (e.g., the first lens to the fourth lens) to the rear optical system, thereby reducing the total optical length of the optical lens. And various aberrations of the optical system can be fully corrected. It can also improve resolution, optimize distortion, CRA and other optical performances while ensuring the compactness of the overall structure of the optical lens. Further, gluing the fifth lens and the sixth lens can also achieve the following technical effects: reducing the spacing distance (e.g., air spacing) between the fifth lens and the sixth lens along the optical axis to reduce the total optical length of the optical lens; reducing the assembly components between the two lenses, reducing the process and reducing the cost; reducing the tolerance sensitivity of the two lenses due to tilt / eccentricity and other problems generated during the assembly process; reducing the light loss caused by reflection between the two lenses and improving the illumination; reducing the field curvature and correcting the off-axis point aberration of the optical lens.

[0029] In the present 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 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, and T L 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 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 angle of the optical lens, FOV is the maximum field 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, 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. The above meanings are not repeated below.

[0030] Figure 1 The optical lens provided in this application can be used as, for example, a vehicle-mounted lens or a laser radar receiving end lens. Figure 1IMA represents an imaging surface, and light from an object passes through each surface S1 to S22 in sequence and is finally imaged on the imaging surface arranged on the second side, wherein an image sensor chip is arranged on the imaging surface. It should be understood that the optical lens provided in the present application can also be used as, for example, a projection lens or a laser radar transmitting end lens. In this case, Figure 1 Here, IMA represents a light source surface, and light from the light source surface passes through the surfaces S22 to S1 in sequence and is finally projected to the first side, and forms an image or an illuminated area on the first side.

[0031] In an exemplary embodiment, the optical lens may satisfy: 50°≤(FOV×F) / H≤60°. By making the optical lens satisfy the above conditional formula, the optical lens may satisfy a large field of view and a long focus, which is helpful to improve the center resolution of the optical lens. More preferably, the optical lens may further satisfy: 54°≤(FOV×F) / H≤56°, which is more conducive to achieving a large field of view of the optical lens.

[0032] In an exemplary embodiment, the optical lens may satisfy: 4≤TTL / F≤6.2. By making the optical lens satisfy the above conditional formula, the total optical length of the optical lens can be shortened when the total effective focal length of the optical lens is constant, which is conducive to miniaturization. More preferably, the optical lens may further satisfy: 5.6≤TTL / F≤5.9, which is more conducive to shortening the total length of the optical lens.

[0033] In an exemplary embodiment, the optical lens may satisfy: 0.1≤TTL / H / FOV×1°≤0.2. By making the optical lens satisfy the above conditional formula, the total optical length of the optical lens may be short when the maximum field of view of the optical lens is constant, which is conducive to miniaturization. More preferably, the optical lens may further satisfy: 0.16≤TTL / H / FOV×1°≤0.18, which is more conducive to miniaturization of the optical lens.

[0034] In an exemplary embodiment, the optical lens can meet: 3rad -1 ≤TTL / H / θ≤12rad -1 By making the optical lens satisfy the above conditional formula, the total optical length of the optical lens can be shortened when the image plane of the optical lens is constant, which is conducive to miniaturization. More preferably, the optical lens can further satisfy: -1 ≤TTL / H / θ≤11rad -1 , which is more conducive to the miniaturization of optical lenses.

[0035] In an exemplary embodiment, the optical lens may satisfy: 2≤TTL / D≤5.5. By making the optical lens satisfy the above conditional formula, the total optical length of the optical lens may be short, which is conducive to miniaturization. More preferably, the optical lens may further satisfy: 3.5≤TTL / D≤4.5, which is more conducive to miniaturization of the optical lens.

[0036] In an exemplary embodiment, the optical lens may satisfy: 0.8 rad ≥ (F θ) / D≥0.4rad. By making the optical lens satisfy the above condition, the aperture of the optical lens can be made small under a certain field of view, which is conducive to miniaturization. More preferably, the optical lens can further satisfy: 0.45rad≤(F θ) / D≤0.65rad, which is more conducive to the miniaturization of optical lenses.

[0037] 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 formula, the aperture of the optical lens may be small under a certain image height, which is conducive to miniaturization. More preferably, the optical lens may further satisfy: 0.03≤D / H / FOV×1°≤0.05, which is more conducive to miniaturization of the optical lens.

[0038] In an exemplary embodiment, the optical lens can meet: 1.5 rad -1 ≤D / H / θ≤3.5rad -1 By making the optical lens satisfy the above conditional formula, the aperture of the optical lens can be made small under a certain field of view angle, which is conducive to miniaturization. More preferably, the optical lens can further satisfy: 2rad -1 ≤D / H / θ≤2.8rad -1 , which is more conducive to the miniaturization of optical lenses.

[0039] In an exemplary embodiment, the optical lens may satisfy: 0.05 mm -1 ≤D / H / F≤0.25mm -1 By making the optical lens satisfy the above conditional formula, the aperture of the optical lens can be made small under the condition of a certain field of view angle and the total effective focal length of the optical lens, which is conducive to miniaturization. More preferably, the optical lens can further satisfy: 0.1mm -1 ≤D / H / F≤0.165mm -1 , which is more conducive to the miniaturization of optical lenses.

[0040] In an exemplary embodiment, the optical lens may satisfy: 0.3≤BFL / TTL≤0.5. By making the optical lens satisfy the above conditional formula, a long back focus effect can be achieved, leaving enough 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 a long back focus of the optical lens.

[0041] In an exemplary embodiment, the optical lens may satisfy: 0.4≤BFL / TL≤0.8. By making the optical lens satisfy the above conditional formula, a long back focus effect can be achieved, leaving enough 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 a long back focus of the optical lens.

[0042] In an exemplary embodiment, the optical lens may satisfy: 0.8≤F / H≤2. By making the optical lens satisfy the above conditional formula, the total effective focal length of the optical lens and the image height corresponding to the maximum field angle may 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.

[0043] In an exemplary embodiment, the optical lens may satisfy: 2≤F / ENPD≤3. By making the optical lens satisfy the above conditional formula, a small FNO of the optical lens can be achieved, the light flux can be increased, and the relative illumination can be improved. More preferably, the optical lens may further satisfy: 2.6≤F / ENPD≤2.9, which is more conducive to achieving a high light flux of the optical lens.

[0044] 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 formula, a small FNO of the optical lens can be achieved, the amount of light can be increased, and relative illumination can be improved. More preferably, the optical lens may further satisfy: 0.13 mm -1 ≤F / ENPD / D≤0.18mm -1 , which is more conducive to achieving high luminous flux of optical lenses.

[0045] In an exemplary embodiment, the optical lens may satisfy: 0.45≤DST / F≤0.65. By making the optical lens satisfy the above conditional formula, the ratio of the aperture diameter to the total effective focal length of the optical lens can be made larger, thereby making the aperture of the optical lens large. More preferably, the optical lens may further satisfy: 0.54≤DST / F≤0.6, which is more conducive to achieving a high luminous flux of the optical lens.

[0046] In an exemplary embodiment, the optical lens may satisfy: 2.8≤F1 / F≤20. In an exemplary embodiment, the first lens has positive power, which introduces barrel distortion, and the light trend is contracted. Compared with the pincushion distortion introduced when the first lens has negative power, the barrel distortion is better corrected, and thus this setting is conducive 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 can further satisfy: 3.6≤F1 / F≤17.47, which is more conducive to achieving small distortion of the optical lens.

[0047] In an exemplary embodiment, the optical lens may satisfy: -3≤F2 / F≤-0.8. In an exemplary embodiment, the first lens has positive focal length. By making the optical lens satisfy the above conditional formula and making the second lens have negative focal length, the positive and negative distortions of the first lens and the second lens can be offset, thereby correcting the distortion and achieving small distortion. More preferably, the optical lens may further satisfy: -2.5≤F2 / F≤-1, which is more conducive to achieving small distortion of the optical lens.

[0048] 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 be meniscus-shaped as a whole, with a first side surface being a convex surface and a second side surface being a concave surface. This structure can offset the distortion caused by the two side surfaces, which is conducive to achieving small distortion. By making the optical lens satisfy the above conditional formula, the distortion caused by the two side surfaces can be further offset, which is conducive to achieving small distortion. More preferably, the optical lens may further satisfy: 2.2≤R3 / R4≤25, which is more conducive to achieving small distortion of the optical lens.

[0049] In an exemplary embodiment, the optical lens may satisfy: 3.42≤F5 / F≤135. In an exemplary embodiment, the fifth lens has positive 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), and may introduce barrel distortion at the maximum field of view of the rear lens group, which is conducive to achieving small distortion. By making the optical lens satisfy the above conditional formula, small distortion of the optical lens may be further achieved. More preferably, the optical lens may further satisfy: 5≤F5 / F≤128, which is more conducive to achieving small distortion of the optical lens.

[0050] In an exemplary embodiment, the optical lens may satisfy: 0.5≤R9 / R10≤6. In an exemplary embodiment, adjacent lenses from the first lens to the sixth lens are arranged in a combination of positive and negative optical powers, such as a first lens with positive optical power, a second lens with negative optical power, a third lens with positive optical power, etc., to effectively reduce spherical aberration and coma and improve resolution. And in an exemplary embodiment, the fifth lens has positive optical power, which is a meniscus with a first side concave toward the aperture, which can reduce the incident angle of the light after the aperture and the fifth lens, reduce the system field curvature and improve the resolution. By making the optical lens satisfy the above conditional formula, the incident angle of the light after the aperture and the fifth lens can be further reduced, reducing the system field curvature and improving the resolution. More preferably, the optical lens can further satisfy: 1≤R9 / R10≤3.8, which is more conducive to achieving high resolution of the optical lens.

[0051] 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 allocating 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.

[0052] 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 allocating 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 the optical lens simultaneously satisfies the conditional formulas 0.3≤F8 / F9≤6 and 0.15≤F7 / F8≤1, and reasonably allocating the effective focal lengths of the seventh lens, the eighth lens, and the ninth lens can further reduce the introduction of spherical aberration, which is conducive to achieving high resolution.

[0053] 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 lens near the chip (i.e., the lens group formed by the seventh lens, the eighth lens, and the ninth lens) is conducive to generating small-angle light on the chip side, which is conducive to achieving a small CRA and a long back focus. More preferably, the optical lens may further satisfy: 0.94≤F7-9 / F≤1.22, which is more conducive to achieving a long back focus of the optical lens.

[0054] In an exemplary embodiment, the optical lens may satisfy: -1.5≤R16 / R17≤0. By making the optical lens satisfy the above conditional formula and reasonably setting the ratio of the radius of curvature of the first side surface of the ninth lens and the second side surface of the eighth lens, the light emitted through the eighth lens can be smoothly transitioned to the ninth lens, which is beneficial to expand the image plane and achieve telephoto. Preferably, the optical lens may further satisfy: -1≤R16 / R17≤0, which is more conducive to achieving a long back focus of the optical lens. In an exemplary embodiment, the second side surface of the eighth lens is a convex surface, the first side surface of the ninth lens is a convex surface, and at the same time satisfies the above conditional formula (-1≤R16 / R17≤0, or further -0.8≤R16 / R17≤0), which is helpful to correct chromatic aberration and can increase the luminous flux. In an exemplary embodiment, the second side surface of the eighth lens is concave, the first side surface of the ninth lens is convex, and the condition 300≥R16 / R17≥0.05 (or further 270≥R16 / R17≥0.08) is satisfied at the same time, which is beneficial to further increase the back focus of the optical lens.

[0055] 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 formula, increasing the thickness of the fifth lens and the sixth lens helps to smoothly transition the light and improve the image quality. More preferably, the optical lens may further satisfy: 0.3 ≥ (d10 + d11) / TL ≥ 0.04, which is more conducive to achieving high resolution of the optical lens.

[0056] In an exemplary embodiment, the optical lens may satisfy: 0.1≤d10 / d11≤2.5. In an exemplary embodiment, the fifth lens may be glued with the sixth lens to form a glued part. By making the optical lens satisfy the above conditional formula, the thickness of the fifth lens and the sixth lens is controlled to be close, which helps to smoothly transition the light and improve the image quality. More preferably, the optical lens may further satisfy: 0.2≤d10 / d11≤2.1, which is more conducive to achieving high resolution of the optical lens.

[0057] In an exemplary embodiment, the optical lens may satisfy: d56 / TTL≤0.02. By making the optical lens satisfy the above conditional formula, the spacing distance between the fifth lens and the sixth lens along the optical axis is close, which is conducive to the rapid transition of edge light, reduces edge aberration, and achieves high resolution of the optical lens. More preferably, the optical lens may further satisfy: d56 / TTL≤0.01, which is more conducive to achieving high resolution of the optical lens.

[0058] In an exemplary embodiment, the optical lens may satisfy: -1≥R9 / F≥-20. In an exemplary embodiment, the first side surface of the fifth lens may be a concave surface, which helps to diverge the light and enables the optical lens to satisfy the above conditional formula, which is more conducive to diverging the light, thereby improving the edge resolution capability. 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.

[0059] 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 spacing 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, thereby achieving 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.

[0060] 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 optical focal length and a smaller effective focal length, the aberration of the optical lens can be effectively eliminated, and by controlling the distance between the fourth lens and the fifth lens along the optical axis to be longer, the effect of making the fourth lens have a smaller 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.

[0061] 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 positive optical power, the third lens can smoothly receive the light diverged by the second lens and converge the light, so as to further reduce the rear lens aperture, which is conducive 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.

[0062] In an exemplary embodiment, the optical lens may satisfy: -7≤F4 / F≤-0.5. The optical lens satisfies the above conditional formula, controls the fourth lens to have a negative focal length, and has a small effective focal length, which can effectively eliminate 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.

[0063] In an exemplary embodiment, the optical lens may satisfy: -5≤F6 / F≤-1. By making the optical lens satisfy the above conditional formula, the sixth lens is controlled to have a negative optical power and a small effective focal length, which can effectively eliminate 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.

[0064] 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 may filter light with different wavelengths, and the protective glass may prevent the elements (e.g., chip) on the second side of the optical lens from being damaged.

[0065] In an exemplary embodiment, the first lens to the ninth lens may be a glass lens or a plastic lens. The present application does not specifically limit the specific number of glass lenses and plastic lenses. An optical lens made of glass can suppress the deviation of the back focus of the optical lens with temperature changes to improve the stability of the system. At the same time, the use of glass material can avoid problems such as lens imaging blur caused by high and low temperature changes in the use environment and affecting the normal use of the lens. Specifically, when focusing on temperature performance and resolution quality, the first lens to the ninth lens can all be glass aspherical lenses. In applications where temperature stability requirements are lower, the first lens to the ninth lens in the optical lens can also be made of plastic. Making optical lenses with plastic can effectively reduce production costs. Of course, the first lens to the ninth lens in the optical lens can also be made of a combination of plastic and glass.

[0066] According to the above-mentioned embodiment of the present application, the optical lens has at least one beneficial effect such as large field of view, short total length, high luminous flux, miniaturization, high resolution, long focus, long back focus, and small distortion through the reasonable setting of parameters such as lens shape and optical focal length.

[0067] However, it should be understood by those skilled in the art that, without departing from the technical solution claimed in the present application, the number of lenses constituting the lens can be changed to obtain the various results and advantages described in this specification. For example, although nine lenses are described as an example in the embodiments, the optical lens is not limited to nine lenses. If necessary, the optical lens may also include other numbers of lenses. The following further describes specific embodiments of the optical lens applicable to the above-mentioned embodiments with reference to the accompanying drawings.

[0068] Example 1

[0069] The following reference Figure 1 An optical lens according to Embodiment 1 of the present application is described. Figure 1 A schematic structural diagram of an optical lens according to Example 1 of the present application is shown.

[0070] like Figure 1 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, and a ninth lens L9 in sequence from the first side to the second side along the optical axis.

[0071] The first lens L1 has positive refractive power, a first side surface S1 of the first lens L1 is a convex surface, and a second side surface S2 of the first lens L1 is a concave surface.

[0072] The second lens L2 has negative refractive power, and its first side surface S3 is a convex surface, and its second side surface S4 is a concave surface.

[0073] The third lens L3 has positive refractive power, and its first side surface S5 is a convex surface, and its second side surface S6 is a concave surface.

[0074] The fourth lens L4 has negative refractive power, and its first side surface S7 is convex, and its second side surface S8 is concave.

[0075] The fifth lens L5 has positive refractive power, and its first side surface S9 is concave, and its second side surface S10 is convex.

[0076] The sixth lens L6 has negative refractive power, and its first side surface S10 is a concave surface, and its second side surface S11 is a concave surface.

[0077] The seventh lens L7 has positive refractive power, and its first side surface S12 is concave, and its second side surface S13 is convex.

[0078] The eighth lens L8 has positive refractive power, and its first side surface S14 is a convex surface, and its second side surface S15 is a convex surface.

[0079] The ninth lens L9 has positive refractive power, and its first side surface S16 is a convex surface, and its second side surface S17 is a convex surface.

[0080] The fifth lens L5 and the sixth lens L6 may be cemented together to form a cemented component.

[0081] The optical lens may further include a stop STO, and the stop STO may be disposed between the fourth lens L4 and the fifth lens L5.

[0082] Optionally, the optical lens may further include a filter having a first side surface S18 and a second side surface S19, a first protective glass having a first side surface S20 and a second side surface S21, and a second protective glass having a first side surface S22 and a second side surface IMA.

[0083] The optical lens provided in this application can be used as, for example, a vehicle-mounted lens or a laser radar receiving end lens. In this case, Figure 1IMA represents the imaging surface, and the light from the object passes through the surfaces S1 to S22 in sequence and is finally imaged on the imaging surface IMA disposed on the second side, wherein an image sensor chip is disposed on the imaging surface. It should be understood that the optical lens provided in the present application can also be used as, for example, a projection lens or a laser radar transmitting end lens. In this case, Figure 1 Here, IMA represents a light source surface, and light from the light source surface passes through the surfaces S22 to S1 in sequence and is finally projected to the first side, and forms an image or an illuminated area on the first side.

[0084] Table 1 shows the curvature radius R, thickness / distance, refractive index Nd, and Abbe number Vd of each lens of the optical lens of Example 1.

[0085] Table 1

[0086] Example 2

[0087] The following reference Figure 2 The optical lens according to Embodiment 2 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Figure 2 A schematic structural diagram of an optical lens according to Embodiment 2 of the present application is shown.

[0088] like Figure 2 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shape and positive and negative optical power of each lens of the optical lens of Example 2 are the same as those of Example 1.

[0089] Table 2 shows the parameters of each lens of the optical lens of Example 2.

[0090] Table 2

[0091] Example 3

[0092] The following reference Figure 3 The optical lens according to Embodiment 3 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Figure 3 A schematic structural diagram of an optical lens according to Example 3 of the present application is shown.

[0093] like Figure 3As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shape and positive and negative optical power of each lens of the optical lens of Example 3 are different from those of Example 1 in 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.

[0094] Table 3 shows the parameters of each lens of the optical lens of Example 3.

[0095] Table 3

[0096] Example 4

[0097] The following reference Figure 4 The optical lens according to Embodiment 4 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Figure 4 A schematic structural diagram of an optical lens according to Example 4 of the present application is shown.

[0098] like Figure 4 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shape and positive and negative optical power of each lens of the optical lens of Example 4 are the same as those of Example 3.

[0099] Table 4 shows the parameters of each lens of the optical lens of Example 4.

[0100] Table 4

[0101] Example 5

[0102] The following reference Figure 5 The optical lens according to Embodiment 5 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Figure 5 A schematic structural diagram of an optical lens according to Example 5 of the present application is shown.

[0103] like Figure 5As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shapes and positive and negative optical powers of the optical lens of Example 5 are different from those of Example 1 in that the second side surface S2 of the first lens L1 is a convex surface, the first side surface S3 of the second lens L2 is a plane, and the second side surface S6 of the third lens L3 is a convex surface.

[0104] Table 5 shows the parameters of each lens of the optical lens of Example 5.

[0105] Table 5

[0106] Example 6

[0107] The following reference Figure 6 The optical lens according to Embodiment 6 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Figure 6 A schematic structural diagram of an optical lens according to Example 6 of the present application is shown.

[0108] like Figure 6 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shape and positive and negative optical power of each lens of the optical lens of Example 6 are the same as those of Example 5.

[0109] Table 6 shows the parameters of each lens of the optical lens of Example 6.

[0110] Table 6

[0111] Example 7

[0112] The following reference Figure 7 The optical lens according to Embodiment 7 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Figure 7 A schematic structural diagram of an optical lens according to Example 7 of the present application is shown.

[0113] like Figure 7As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shapes and positive and negative optical powers of the optical lens of Example 7 are different from those of Example 1 in that the first side surface S1 of the first lens L1 is a plane, the second side surface S2 is a convex surface, and the second side surface S6 of the third lens L3 is a plane.

[0114] Table 7 shows the parameters of each lens of the optical lens of Example 7.

[0115] Table 7

[0116] Example 8

[0117] The following reference Figure 8 The optical lens according to Embodiment 8 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Figure 8 A schematic structural diagram of an optical lens according to Example 8 of the present application is shown.

[0118] like Figure 8 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shape and positive and negative optical power of each lens of the optical lens of Example 8 are the same as those of Example 7.

[0119] Table 8 shows the parameters of each lens of the optical lens of Example 8.

[0120] Table 8

[0121] Example 9

[0122] The following reference Fig. 9 The optical lens according to Embodiment 9 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig. 9 A schematic structural diagram of an optical lens according to Example 9 of the present application is shown.

[0123] like Fig. 9As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shapes and positive and negative optical powers of the optical lens of Example 9 are different from those of Example 1 in that the first side surface S1 of the first lens L1 is a concave surface, the second side surface S2 is a convex surface, and the second side surface S6 of the third lens L3 is a convex surface.

[0124] Table 9 shows the parameters of each lens of the optical lens of Example 9.

[0125] Table 9

[0126] Example 10

[0127] The following reference Fig.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 Embodiment 1 will be omitted. Fig.10 A schematic structural diagram of an optical lens according to Example 10 of the present application is shown.

[0128] like Fig.10 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shape and positive and negative optical power of each lens of the optical lens of Example 10 are the same as those of Example 9.

[0129] Table 10 shows the parameters of each lens of the optical lens of Example 10.

[0130] Table 10

[0131] Embodiment 11

[0132] The following reference Fig.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 Embodiment 1 will be omitted. Fig.11 A schematic structural diagram of an optical lens according to Example 11 of the present application is shown.

[0133] like Fig.11As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shapes and positive and negative optical powers of the optical lens of Example 11 are different from those of Example 1 in 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 plane, and the second side surface S6 is a convex surface.

[0134] Table 11 shows the parameters of each lens of the optical lens of Example 11.

[0135] Table 11

[0136] Example 12

[0137] The following reference Fig.12 The optical lens according to Embodiment 12 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.12 A schematic structural diagram of an optical lens according to Example 12 of the present application is shown.

[0138] like Fig.12 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shape and positive and negative optical power of each lens of the optical lens of Example 12 are the same as those of Example 11.

[0139] Table 12 shows the parameters of each lens of the optical lens of Example 12.

[0140] Table 12

[0141] Embodiment 13

[0142] The following reference Fig.13 The optical lens according to Embodiment 13 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.13 A schematic structural diagram of an optical lens according to Example 13 of the present application is shown.

[0143] like Fig.13As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shape and positive and negative optical power of each lens of the optical lens of Example 13 are different from those of Example 1 in that the first side surface S5 of the third lens L3 is a concave surface and the second side surface S6 is a convex surface.

[0144] Table 13 shows the parameters of each lens of the optical lens of Example 13.

[0145] Table 13

[0146] Embodiment 14

[0147] The following reference Fig.14 The optical lens according to Embodiment 14 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.14 A schematic structural diagram of an optical lens according to Example 14 of the present application is shown.

[0148] like Fig.14 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shape and positive and negative optical power of each lens of the optical lens of Example 14 are the same as those of Example 13.

[0149] Table 14 shows the parameters of each lens of the optical lens of Example 14.

[0150] Table 14

[0151] Embodiment 15

[0152] The following reference Fig.15 The optical lens according to Embodiment 15 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.15 A schematic structural diagram of an optical lens according to Example 15 of the present application is shown.

[0153] like Fig.15As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shapes and positive and negative optical powers of the optical lens of Example 15 are different from those of Example 1 in that the second side surface S2 of the first lens L1 is a convex surface, the second side surface S6 of the third lens L3 is a convex surface, the first side surface S7 of the fourth lens L4 is a concave surface, the second side surface S8 is a plane, and the first side surface S12 of the seventh lens L7 is a convex surface.

[0154] Table 15 shows the parameters of each lens of the optical lens of Example 15.

[0155] Table 15

[0156] In this embodiment, the first side surface S1 and the second side surface S2 of the first lens L1, and the first side surface S16 and the second side surface S17 of the ninth lens may be aspherical surfaces, and the surface shape of each aspherical lens may be defined by but not limited to the following aspherical surface formula:

[0157] Wherein, x is the distance vector height from the vertex of the aspherical surface when the aspherical surface is at a height of h along the optical axis; c is the paraxial curvature of the aspherical surface, c=1 / R (i.e., the paraxial curvature c is the reciprocal of the curvature radius R in Table 1 above); k is the cone coefficient; Ai is the correction coefficient of the i-th order of the aspherical surface. Table 16 below gives the cone coefficient k and the high-order coefficients A4 and A6 that can be used for each aspherical mirror surface S1, S2, S16, and S17 in Example 15.

[0158] Table 16

[0159] Example 16

[0160] The following reference Fig.16 The optical lens according to Embodiment 16 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.16 A schematic structural diagram of an optical lens according to Example 16 of the present application is shown.

[0161] like Fig.16 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shape and positive and negative optical power of each lens of the optical lens of Example 16 are the same as those of Example 15.

[0162] Table 17 shows the parameters of each lens of the optical lens of Example 16. Table 18 shows the parameters of the aspheric lenses that can be used in Example 16, wherein the surface shapes of each aspheric surface can be defined by the formula (1) given in Example 15 above.

[0163] Table 17

[0164] Table 18

[0165] Embodiment 17

[0166] The following reference Fig.17 The optical lens according to Embodiment 17 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.17 A schematic structural diagram of an optical lens according to Example 17 of the present application is shown.

[0167] like Fig.17 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shape and positive and negative optical power of each lens of the optical lens of Example 17 are different from those of Example 1 in that the first side surface S7 of the fourth lens L4 is a plane.

[0168] Table 19 shows the parameters of each lens of the optical lens of Example 17.

[0169] Table 19

[0170] Embodiment 18

[0171] The following reference Fig.18 The optical lens according to Example 18 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to those in Example 1 will be omitted. Fig.18 A schematic structural diagram of an optical lens according to Example 18 of the present application is shown.

[0172] like Fig.18 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shape and positive and negative optical power of each lens of the optical lens of Example 18 are the same as those of Example 17.

[0173] Table 20 shows the parameters of each lens of the optical lens of Example 18.

[0174] Table 20

[0175] Embodiment 19

[0176] The following reference Fig.19 The optical lens according to Embodiment 19 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.19 A schematic structural diagram of an optical lens according to Example 19 of the present application is shown.

[0177] like Fig.19 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shapes and positive and negative optical powers of the optical lens of Example 19 are different from those of Example 1 in 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.

[0178] Table 21 shows the parameters of each lens of the optical lens of Example 19.

[0179] Table 21

[0180] Embodiment 20

[0181] The following reference Fig. 20 The optical lens according to Embodiment 20 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig. 20 A schematic structural diagram of an optical lens according to Example 20 of the present application is shown.

[0182] like Fig. 20 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shape and positive and negative optical power of each lens of the optical lens of Example 20 are the same as those of Example 19.

[0183] Table 22 shows the parameters of each lens of the optical lens of Example 20.

[0184] Table 22

[0185] Embodiment 21

[0186] The following reference Fig.21 An optical lens according to Embodiment 21 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.21 A schematic structural diagram of an optical lens according to Example 21 of the present application is shown.

[0187] like Fig.21 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shapes and positive and negative optical powers of the optical lens of Example 21 are different from those of Example 1 in that the second side surface S2 of the first lens L1 is a convex surface, the second side surface S6 of the third lens L3 is a convex surface, the first side surface S7 of the fourth lens L4 is a concave surface, the second side surface S8 is a convex surface, and the first side surface S12 of the seventh lens L7 is a convex surface.

[0188] Table 23 shows the parameters of each lens of the optical lens of Example 21. Table 24 shows the parameters of the aspheric lenses that can be used in Example 21, wherein the surface shapes of each aspheric surface can be defined by the formula (1) given in Example 15 above.

[0189] Table 23

[0190] Table 24

[0191] Embodiment 22

[0192] The following reference Fig. 22 An optical lens according to Example 22 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to those in Example 1 will be omitted. Fig. 22 A schematic structural diagram of an optical lens according to Example 22 of the present application is shown.

[0193] like Fig. 22 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shape and positive and negative optical power of each lens of the optical lens of Example 22 are the same as those of Example 21.

[0194] Table 25 shows the parameters of each lens of the optical lens of Example 22. Table 26 shows the parameters of the aspheric lenses that can be used in Example 22, wherein the surface shapes of each aspheric surface can be defined by the formula (1) given in Example 15 above.

[0195] Table 25

[0196] Table 26

[0197] Embodiment 23

[0198] The following reference Fig.23 The optical lens according to Embodiment 23 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.23 A schematic structural diagram of an optical lens according to Example 23 of the present application is shown.

[0199] like Fig.23 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shapes and positive and negative optical powers of the optical lens of Example 23 are different from those of Example 1 in 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.

[0200] Table 27 shows the parameters of each lens of the optical lens of Example 23.

[0201] Table 27

[0202] Embodiment 24

[0203] The following reference Fig.24 An optical lens according to Embodiment 24 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.24 A schematic structural diagram of an optical lens according to Example 24 of the present application is shown.

[0204] like Fig.24 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shape and positive and negative optical power of each lens of the optical lens of Example 24 are the same as those of Example 23.

[0205] Table 28 shows the parameters of each lens of the optical lens of Example 24.

[0206] Table 28

[0207] Embodiment 25

[0208] The following reference Fig.25 The optical lens according to Embodiment 25 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.25 A schematic structural diagram of an optical lens according to Example 25 of the present application is shown.

[0209] like Fig.25 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shapes and positive and negative optical powers of the optical lens of Example 25 are different from those of Example 1 in that the second side surface S2 of the first lens L1 is a convex surface, the second side surface S11 of the sixth lens L6 is a convex surface, and the first side surface S14 of the eighth lens L8 is a flat surface.

[0210] Table 29 shows the parameters of each lens of the optical lens of Example 25.

[0211] Table 29

[0212] Embodiment 26

[0213] The following reference Fig.26 The optical lens according to Example 26 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to those in Example 1 will be omitted. Fig.26 A schematic structural diagram of an optical lens according to Example 26 of the present application is shown.

[0214] like Fig.26 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shape and positive and negative optical power of each lens of the optical lens of Example 26 are the same as those of Example 25.

[0215] Table 30 shows the parameters of each lens of the optical lens of Example 26.

[0216] Table 30

[0217] Embodiment 27

[0218] The following reference Fig. 27 An optical lens according to Example 27 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to those in Example 1 will be omitted. Fig. 27 A schematic structural diagram of an optical lens according to Example 27 of the present application is shown.

[0219] like Fig. 27 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shapes and positive and negative optical powers of the optical lens of Example 27 are different from those of Example 1 in 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.

[0220] Table 31 shows the parameters of each lens of the optical lens of Example 27.

[0221] Table 31

[0222] Embodiment 28

[0223] The following reference Fig.28 The optical lens according to Example 28 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to those in Example 1 will be omitted. Fig.28 A schematic structural diagram of an optical lens according to Example 28 of the present application is shown.

[0224] like Fig.28 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shape and positive and negative optical power of each lens of the optical lens of Example 28 are the same as those of Example 27.

[0225] Table 32 shows the parameters of each lens of the optical lens of Example 28.

[0226] Table 32

[0227] Embodiment 29

[0228] The following reference Fig.29The optical lens according to Example 29 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to those in Example 1 will be omitted. Fig.29 A schematic structural diagram of an optical lens according to Example 29 of the present application is shown.

[0229] like Fig.29 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shape and positive and negative optical power of each lens 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.

[0230] Table 33 shows the parameters of each lens of the optical lens of Example 29.

[0231] Table 33

[0232] Embodiment 30

[0233] The following reference Fig.30 The optical lens according to Embodiment 30 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.30 A schematic structural diagram of an optical lens according to embodiment 30 of the present application is shown.

[0234] like Fig.30 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shape and positive and negative optical power of each lens of the optical lens of Example 30 are the same as those of Example 29.

[0235] Table 34 shows the parameters of each lens of the optical lens of Example 30.

[0236] Table 34

[0237] Embodiment 31

[0238] The following reference Fig.31 An optical lens according to Embodiment 31 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.31 A schematic structural diagram of an optical lens according to Example 31 of the present application is shown.

[0239] like Fig.31 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shape and positive and negative optical power of each lens of the optical lens of Example 31 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 concave surface.

[0240] Table 35 shows the parameters of each lens of the optical lens of Example 31.

[0241] Table 35

[0242] Embodiment 32

[0243] The following reference Fig.32 An optical lens according to Embodiment 32 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.32 A schematic structural diagram of an optical lens according to Example 32 of the present application is shown.

[0244] like Fig.32 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shape and positive and negative optical power of each lens of the optical lens of Example 32 are the same as those of Example 31.

[0245] Table 36 shows the parameters of each lens of the optical lens of Example 32.

[0246] Table 36

[0247] Embodiment 33

[0248] The following reference Fig.33 An optical lens according to Embodiment 33 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.33 A schematic structural diagram of an optical lens according to Example 33 of the present application is shown.

[0249] like Fig.33As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shape and positive and negative optical power of each lens of the optical lens of Example 33 are different from those of Example 1 in 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.

[0250] Table 37 shows the parameters of each lens of the optical lens of Example 33.

[0251] Table 37

[0252] Embodiment 34

[0253] The following reference Fig.34 An optical lens according to Embodiment 34 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.34 A structural schematic diagram of an optical lens according to Example 34 of the present application is shown.

[0254] like Fig.34 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shape and positive and negative optical power of each lens of the optical lens of Example 34 are the same as those of Example 33.

[0255] Table 38 shows the parameters of each lens of the optical lens of Example 34.

[0256] Table 38

[0257] Embodiment 35

[0258] The following reference Fig.35 An optical lens according to Embodiment 35 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.35 A schematic structural diagram of an optical lens according to Example 35 of the present application is shown.

[0259] like Fig.35As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shape and positive and negative optical power of each lens of the optical lens of Example 35 are different from those of Example 1 in 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.

[0260] Table 39 shows the parameters of each lens of the optical lens of Example 35.

[0261] Table 39

[0262] Embodiment 36

[0263] The following reference Fig.36 An optical lens according to Example 36 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to those in Example 1 will be omitted. Fig.36 A schematic structural diagram of an optical lens according to Example 36 of the present application is shown.

[0264] like Fig.36 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shape and positive and negative optical power of each lens of the optical lens of Example 36 are the same as those of Example 35.

[0265] Table 40 shows the parameters of each lens of the optical lens of Example 36.

[0266] Table 40

[0267] Embodiment 37

[0268] The following reference Fig.37 An optical lens according to Example 37 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to those in Example 1 will be omitted. Fig.37 A schematic structural diagram of an optical lens according to Example 37 of the present application is shown.

[0269] like Fig.37As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shapes and positive and negative optical powers of the optical lens of Example 37 are different from those of Example 1 in that the second side surface S2 of the first lens L1 is a convex surface, the first side surface S12 of the seventh lens L7 is a convex surface, and the second side surface S17 of the ninth lens L9 is a flat surface.

[0270] Table 41 shows the parameters of each lens of the optical lens of Example 37.

[0271] Table 41

[0272] Embodiment 38

[0273] The following reference Fig.38 The optical lens according to Example 38 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to those in Example 1 will be omitted. Fig.38 A structural schematic diagram of an optical lens according to Example 38 of the present application is shown.

[0274] like Fig.38 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shape and positive and negative optical power of each lens of the optical lens of Example 38 are the same as those of Example 37.

[0275] Table 42 shows the parameters of each lens of the optical lens of Example 38.

[0276] Table 42

[0277] Embodiment 39

[0278] The following reference Fig.39 The optical lens according to Embodiment 39 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.39 A schematic structural diagram of an optical lens according to Example 39 of the present application is shown.

[0279] like Fig.39As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shapes and positive and negative optical powers of the optical lens of Example 39 are different from those of Example 1 in that the second side surface S2 of the first lens L1 is a convex surface, the first side surface S12 of the seventh lens L7 is a convex surface, and the second side surface S17 of the ninth lens L9 is a concave surface.

[0280] Table 43 shows the parameters of each lens of the optical lens of Example 39.

[0281] Table 43

[0282] Embodiment 40

[0283] The following reference Fig.40 An optical lens according to Embodiment 40 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Fig.40 A schematic structural diagram of an optical lens according to embodiment 40 of the present application is shown.

[0284] like Fig.40 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in order from the first side to the second side along the optical axis. The surface shape and positive and negative optical power of each lens of the optical lens of Example 40 are the same as those of Example 39.

[0285] Table 44 shows the parameters of each lens of the optical lens of Example 40.

[0286] Table 44

[0287] Embodiment 41

[0288] The following reference Fig.40 An optical lens according to Example 41 of the present application is described. In this embodiment, for the sake of brevity, some descriptions similar to those in Example 1 will be omitted. Fig.41 A schematic structural diagram of an optical lens according to Example 41 of the present application is shown.

[0289] like Fig.41 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 in sequence from the first side to the second side along the optical axis.

[0290] The first lens L1 has positive refractive power, a first side surface S1 of the first lens L1 is a convex surface, and a second side surface S2 of the first lens L1 is a concave surface.

[0291] The second lens L2 has negative refractive power, and its first side surface S3 is a convex surface, and its second side surface S4 is a concave surface.

[0292] The third lens L3 has positive refractive power, and its first side surface S5 is a convex surface, and its second side surface S6 is a concave surface.

[0293] The fourth lens L4 has negative refractive power, and its first side surface S7 is convex, and its second side surface S8 is concave.

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

[0295] The sixth lens L6 has negative refractive power, and its first side surface S11 is concave, and its second side surface S12 is concave.

[0296] The seventh lens L7 has positive refractive power, and its first side surface S13 is concave, and its second side surface S14 is convex.

[0297] The eighth lens L8 has positive refractive power, and its first side surface S15 is a convex surface, and its second side surface S16 is a convex surface.

[0298] The ninth lens L9 has positive refractive power, and its first side surface S17 is a convex surface, and its second side surface S18 is a convex surface.

[0299] The optical lens may further include a stop STO, and the stop STO may be disposed between the fourth lens L4 and the fifth lens L5.

[0300] Optionally, the optical lens may further include a filter having a first side surface S19 and a second side surface S20, a first protective glass having a first side surface S21 and a second side surface S22, and a second protective glass having a first side surface S23 and a second side surface IMA.

[0301] The optical lens provided in this application can be used as, for example, a vehicle-mounted lens or a laser radar receiving end lens. In this case, Fig.41 IMA represents the imaging surface, and the light from the object passes through the surfaces S1 to S23 in sequence and is finally imaged on the imaging surface IMA disposed on the second side, wherein an image sensor chip is disposed on the imaging surface. It should be understood that the optical lens provided in the present application can also be used as, for example, a projection lens or a laser radar transmitting end lens. In this case, Fig.41 Here, IMA represents a light source surface, and light from the light source surface passes through the surfaces S23 to S1 in sequence and is finally projected to the first side, and forms an image or an illuminated area on the first side.

[0302] Table 45 shows the parameters of each lens of the optical lens of Example 41.

[0303] Table 45

[0304] In summary, Examples 1 to 41 respectively satisfy the relationships shown in Table 45-1, Table 45-2, Table 45-3, and Table 45-4. In Table 45-1, Table 45-2, Table 45-3, and Table 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).

[0305] Table 45-1

[0306] Table 45-2

[0307] Table 45-3

[0308] Table 45-4

[0309] The present application also provides an electronic device, which may include an optical lens according to the above-mentioned embodiment of the present application and an imaging element for converting an optical image formed by the optical lens into an electrical signal. The electronic device may be an independent electronic device such as a detection distance camera, or an imaging module integrated in a device such as a detection distance device. In addition, the electronic device may also be an independent imaging device such as a vehicle-mounted camera, or an imaging module integrated in an auxiliary driving system. In an exemplary embodiment, the electronic device may include an optical lens and a light source according to the above-mentioned embodiment of the present application, and the light emitted by the light source is projected onto a target area after passing through the optical lens to form an image or illuminate an area.

[0310] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. An optical lens, characterized in that: The optical lens includes, in sequence from the first side to the second side along the optical axis: a first lens having 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 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 optical lens meets the following requirements: 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, and d56 is the spacing distance between the fifth lens and the sixth lens along the optical axis. From, 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 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 angle of the optical lens, FOV is the maximum field 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, 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