Optical lens and electronic device

Abstract

The application discloses an optical lens and an electronic device comprising the same. The optical lens comprises, in order from a first side to a second side along an optical axis: a first lens with negative refractive power, the first side of which is a convex surface and the second side of which is a concave surface; a second lens with negative refractive power, the first side of which is a convex surface and the second side of which is a concave surface; a third lens with negative refractive power, the first side of which is a concave surface; a fourth lens with positive refractive power; a fifth lens with positive refractive power, the first side of which is a convex surface and the second side of which is a convex surface; a sixth lens with positive refractive power, the first side of which is a convex surface and the second side of which is a convex surface; a seventh lens with negative refractive power, the first side of which is a concave surface; and an eighth lens with positive refractive power, the first side of which is a convex surface.

Description

Technical Field

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

[0002] In recent years, thanks to the rapid development of automotive driver assistance systems (ADAS), lenses have been widely used in automobiles, including in-vehicle reversing camera systems, dashcams, automatic parking and panoramic parking systems, and route-finding systems. In-vehicle lenses are key components for acquiring external information in autonomous driving assistance systems. With the rapid development of these systems, the performance requirements for optical lenses used in side-view applications are becoming increasingly stringent, moving towards higher resolution, wider field of view, lower distortion, and miniaturization. Simultaneously, as autonomous driving demands more for nighttime driving, the requirements for night vision capabilities in in-vehicle lenses are also increasing. Therefore, the market currently needs an optical lens with a large aperture, high relative illumination, and compact size to meet the needs of automotive side-view and night vision applications.

[0003] The existing optical lenses have the following main problems:

[0004] 1. It cannot simultaneously meet the requirements of high resolution and miniaturization;

[0005] 2. Although it can achieve a resolution of one megapixel, the lens suffers from serious aberrations such as chromatic aberration, astigmatism, and distortion.

[0006] 3. It has poor light transmission capabilities and cannot adapt to dark environments at night or on rainy days;

[0007] 4. It cannot simultaneously meet the requirements of a small front port diameter and miniaturization;

[0008] 5. It cannot simultaneously meet the requirements of large aperture and high resolution. Summary of the Invention

[0009] This application provides an optical lens that aims to solve the problem that existing optical lenses cannot simultaneously achieve large aperture, high resolution, small front aperture, miniaturization, and high imaging quality, while also possessing strong light transmission capability and adapting to dark environments such as nighttime or rainy days.

[0010] This application provides an optical lens comprising, from a first side to a second side along the optical axis: a first lens having negative optical power, wherein the first side is convex and the second side is concave; a second lens having negative optical power, wherein the first side is convex and the second side is concave; a third lens having negative optical power, wherein the first side is concave; a fourth lens having positive optical power; a fifth lens having positive optical power, wherein the first side is convex and the second side is convex; a sixth lens having positive optical power, wherein the first side is convex and the second side is convex; a seventh lens having negative optical power, wherein the first side is concave; and an eighth lens having positive optical power, wherein the first side is convex.

[0011] In one embodiment, the second side surface of the third lens is concave.

[0012] In one embodiment, the second side surface of the third lens is a convex surface.

[0013] In one embodiment, the first side surface of the fourth lens is convex, and the second side surface is convex.

[0014] In one embodiment, the first side surface of the fourth lens is convex, and the second side surface is concave.

[0015] In one embodiment, the first side surface of the fourth lens is concave, and the second side surface is convex.

[0016] In one embodiment, the second side surface of the seventh lens is concave.

[0017] In one embodiment, the second side surface of the seventh lens is convex.

[0018] In one embodiment, the second side surface of the eighth lens is concave.

[0019] In one embodiment, the second side surface of the eighth lens is a convex surface.

[0020] In one embodiment, the distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens on the optical axis, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view FOV of the optical lens satisfy: TTL / H / FOV×180°≤90.

[0021] In one embodiment, the distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens on the optical axis, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy: TTL / H / θ≤5.

[0022] In one embodiment, the distance TTL from the center of the first side of the first lens to the imaging plane of the optical lens on the optical axis, the focal length F of the optical lens, and the maximum field of view FOV of the optical lens satisfy: TTL / (F×FOV)×180°≤90.

[0023] In one embodiment, the distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens on the optical axis, the focal length F of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy: TTL / (F×θ)≤8.

[0024] In one embodiment, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy: D / H / θ≤2.

[0025] In one embodiment, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy: 0.1≤D / H≤5.

[0026] In one embodiment, the radius of curvature R9 of the first side surface of the fifth lens satisfies the following condition with respect to the focal length F of the optical lens: R9 / F≥0.5.

[0027] In one embodiment, the focal length F of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy: 0.1≤F / H≤1.

[0028] In one embodiment, the focal length F8 of the eighth lens and the focal length F of the optical lens satisfy: 1≤F8 / F≤30.

[0029] In one embodiment, the focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy: F / ENPD≤2.

[0030] In one embodiment, the center thickness d12 of the sixth lens, the center thickness d13 of the seventh lens, and the distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens on the optical axis satisfy: 0.01≤(d12+d13) / TTL≤0.5.

[0031] In one embodiment, the image height H corresponding to the maximum field of view of the optical lens, the focal length F of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy: |(HF×θ) / (F×θ)|≤0.2.

[0032] In one embodiment, the radius of curvature R15 of the first side of the eighth lens satisfies the following condition with respect to the focal length F of the optical lens: 1≤R15 / F≤8.

[0033] In one embodiment, the air gap d14 between the seventh lens and the eighth lens and the center distance BFL from the center of the second side of the eighth lens to the center of the imaging plane satisfy: 1.5≤(d14×BFL) / (d14+BFL).

[0034] In one embodiment, the optical power of the first lens Optical focal length of optical lens satisfy:

[0035] In one embodiment, the image height H corresponding to the maximum field of view of the optical lens and the maximum field of view FOV of the optical lens satisfy: 0.3 ≤ FOV / 2 / (H / 2)^ 2 .

[0036] In one embodiment, the distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens on the optical axis satisfies the following condition: 1.6≤TTL / D≤3.5.

[0037] In one embodiment, the radius of curvature R15 of the first side of the eighth lens and the center thickness d15 of the eighth lens satisfy: 1≤R15 / d15≤20.

[0038] In one embodiment, the distance TTL from the center of the first side of the first lens to the imaging plane of the optical lens on the optical axis and the distance BFL from the center of the second side of the eighth lens to the center of the imaging plane satisfy: TTL / BFL≥5.5.

[0039] This application also provides an optical lens. The optical lens, along its optical axis from a first side to a second side, sequentially includes: a first lens with negative optical power; a second lens with negative optical power; a third lens with negative optical power; a fourth lens with positive optical power; a fifth lens with positive optical power; a sixth lens with positive optical power; a seventh lens with negative optical power; an eighth lens with positive optical power; and the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy: 0.1 ≤ D / H ≤ 5.

[0040] In one embodiment, the first side surface of the first lens is convex, and the second side surface is concave.

[0041] In one embodiment, the first side surface of the second lens is convex, and the second side surface is concave.

[0042] In one embodiment, the first side surface of the third lens is concave, and the second side surface is concave.

[0043] In one embodiment, the first side surface of the third lens is concave, and the second side surface is convex.

[0044] In one embodiment, the first side surface of the fourth lens is convex, and the second side surface is convex.

[0045] In one embodiment, the first side surface of the fourth lens is convex, and the second side surface is concave.

[0046] In one embodiment, the first side surface of the fourth lens is concave, and the second side surface is convex.

[0047] In one embodiment, the first side surface of the fifth lens is convex, and the second side surface is convex.

[0048] In one embodiment, the first side surface of the sixth lens is convex, and the second side surface is convex.

[0049] In one embodiment, the first side surface of the seventh lens is concave, and the second side surface is concave.

[0050] In one embodiment, the first side surface of the seventh lens is concave, and the second side surface is convex.

[0051] In one embodiment, the first side surface of the eighth lens is convex, and the second side surface is concave.

[0052] In one embodiment, the first side surface of the eighth lens is convex, and the second side surface is convex.

[0053] In one embodiment, the distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens on the optical axis, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view FOV of the optical lens satisfy: TTL / H / FOV×180°≤90.

[0054] In one embodiment, the distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens on the optical axis, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy: TTL / H / θ≤5.

[0055] In one embodiment, the distance TTL from the center of the first side of the first lens to the imaging plane of the optical lens on the optical axis, the focal length F of the optical lens, and the maximum field of view FOV of the optical lens satisfy: TTL / (F×FOV)×180°≤90.

[0056] In one embodiment, the distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens on the optical axis, the focal length F of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy: TTL / (F×θ)≤8.

[0057] In one embodiment, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy: D / H / θ≤2.

[0058] In one embodiment, the radius of curvature R9 of the first side surface of the fifth lens satisfies the following condition with respect to the focal length F of the optical lens: R9 / F≥0.5.

[0059] In one embodiment, the focal length F of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy: 0.1≤F / H≤1.

[0060] In one embodiment, the focal length F8 of the eighth lens and the focal length F of the optical lens satisfy: 1≤F8 / F≤30.

[0061] In one embodiment, the focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy: F / ENPD≤2.

[0062] In one embodiment, the center thickness d12 of the sixth lens, the center thickness d13 of the seventh lens, and the distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens on the optical axis satisfy: 0.01≤(d12+d13) / TTL≤0.5.

[0063] In one embodiment, the image height H corresponding to the maximum field of view of the optical lens, the focal length F of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy: |(HF×θ) / (F×θ)|≤0.2.

[0064] In one embodiment, the radius of curvature R15 of the first side of the eighth lens satisfies the following condition with respect to the focal length F of the optical lens: 1≤R15 / F≤8.

[0065] In one embodiment, the air gap d14 between the seventh lens and the eighth lens and the center distance BFL from the center of the second side of the eighth lens to the center of the imaging plane satisfy: 1.5≤(d14×BFL) / (d14+BFL).

[0066] In one embodiment, the optical power of the first lens Optical focal length of optical lens satisfy:

[0067] In one embodiment, the image height H corresponding to the maximum field of view of the optical lens satisfies the following condition with respect to the maximum field of view (FOV): 0.3 ≤ FOV / 2 / (H / 2). ^2 .

[0068] In one embodiment, the distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens on the optical axis satisfies the following condition: 1.6≤TTL / D≤3.5.

[0069] In one embodiment, the radius of curvature R15 of the first side of the eighth lens and the center thickness d15 of the eighth lens satisfy: 1≤R15 / d15≤20.

[0070] In one embodiment, the distance TTL from the center of the first side of the first lens to the imaging plane of the optical lens on the optical axis and the distance BFL from the center of the second side of the eighth lens to the center of the imaging plane satisfy: TTL / BFL≥5.5.

[0071] In another aspect, this application provides an electronic device. This electronic device includes an optical lens according to this application and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

[0072] This application employs eight lenses, and by optimizing the shape and optical power of each lens, the optical lens achieves at least one beneficial effect such as small aperture, miniaturization, high resolution, small CRA, large aperture, high relative illumination, high light transmission, large field of view, low distortion, and long rear focal length. Attached Figure Description

[0073] Other features, objects, and advantages of this utility application will become more apparent from the following detailed description of the embodiments, taken in conjunction with the accompanying drawings. In the drawings:

[0074] Figure 1 This is a schematic diagram illustrating the structure of an optical lens according to Embodiment 1 of this application;

[0075] Figure 2 To illustrate the structure of the optical lens according to Embodiment 2 of this application;

[0076] Figure 3 To illustrate the structure of the optical lens according to Embodiment 3 of this application;

[0077] Figure 4 This is a schematic diagram illustrating the structure of the optical lens according to Embodiment 4 of this application;

[0078] Figure 5This is a schematic diagram illustrating the structure of the optical lens according to Embodiment 5 of this application;

[0079] Figure 6 To illustrate the structure of the optical lens according to Embodiment 6 of this application;

[0080] Figure 7 This is a schematic diagram illustrating the structure of the optical lens according to Embodiment 7 of this application;

[0081] Figure 8 This is a schematic diagram illustrating the structure of the optical lens according to Embodiment 8 of this application;

[0082] Figure 9 To illustrate the structural schematic diagram of the optical lens according to Embodiment 9 of this application; and

[0083] Figure 10 This is a schematic diagram illustrating the structure of an optical lens according to Embodiment 10 of this application. Detailed Implementation

[0084] To facilitate understanding of this application, a more complete description of the application will be provided below with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of the application and are not intended to limit the scope of the application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0085] It should be noted that in this specification, the terms "first," "second," "third," etc., are used only to distinguish one feature from another and do not imply any limitation on the features. Therefore, without departing from the teachings of this application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0086] In the accompanying drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are illustrated by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustrative purposes only and are not strictly to scale.

[0087] In this document, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the location of the convexity 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 location of the concaveness 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, and the surface of each lens closest to the second side is called the second side surface of the lens. The surface of an optical lens closest to the second side is called the second side surface of the optical lens. Exemplarily, the first side can be the object side and the second side can be the image side; or, the first side can be the imaging side and the second side can be the image source side.

[0088] It should also be understood that the terms "comprising," "including," "having," "containing," and / or "comprising," when used in this specification, indicate the presence of the stated features, elements, and / or components, but do not exclude the presence or addition of one or more other features, elements, components, and / or combinations thereof. Furthermore, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire list of features, not individual elements in the list. Additionally, when describing embodiments of this application, the word "may" is used to mean "one or more embodiments of this application." And the term "exemplary" is intended to refer to an example or illustration.

[0089] Unless otherwise specified, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms (e.g., those defined in common dictionaries) shall be interpreted as having a meaning consistent with their meaning in the context of the relevant art and shall not be interpreted in an idealized or overly formalized sense, unless expressly so specified herein.

[0090] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0091] The features, principles and other aspects of this application are described in detail below.

[0092] In an exemplary embodiment, the optical lens includes, for example, eight lenses with optical power, namely a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens. These eight lenses are arranged sequentially along the optical axis from the first side to the second side.

[0093] In an exemplary embodiment, the optical lens provided in this application can be used, for example, as an automotive 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 rays from the object side can form an image on the image side. The second side of the optical lens is the imaging surface of the optical lens.

[0094] In an exemplary embodiment, the optical lens provided in this application can be used as, for example, a projection lens or a lidar transmitter lens. In this case, the second side of the optical lens can be the image source side, and the first side can be the imaging side. Light from the image source side can be imaged on the imaging side. The second side of the optical lens is the image source surface of the optical lens.

[0095] In an exemplary embodiment, the optical lens may further include a photosensitive element disposed on the second side. Optionally, the photosensitive element disposed on the second side may be a photocoupled device (CCD) or a complementary metal oxide semiconductor device (CMOS).

[0096] In an exemplary embodiment, the first lens has negative optical power, with a first convex side and a second concave side. The negative optical power of the first lens prevents excessive light divergence from the first side, facilitating control over the aperture of the rear lens and enabling miniaturization. The meniscus shape of the first lens maximizes the collection of light from a wide field of view, increasing the amount of light entering the rear optical system and thus increasing light transmission. The first lens can be made of a high-refractive-index material, which helps reduce the front aperture. Furthermore, the convex object-side surface of the first lens facilitates water droplet sliding off in rainy applications, reducing the interference of water droplets on image quality.

[0097] In an exemplary embodiment, the second lens has negative optical power, with its first side being convex and its second side being concave. The negative optical power of the second lens diverges light, separating central and peripheral rays from each field of view, thus enlarging the aperture and increasing system illumination. It also facilitates the correction of aberrations between central and peripheral rays, achieving high resolution. Under the same field of view, light emitted from the second side of the first lens provides a larger light-receiving surface for subsequent optical systems, enabling a larger aperture and greater light intake, thus increasing image brightness. Simultaneously, the convexity of the first side of the second lens, combined with the concave surface of the second side of the first lens, ensures that light emitted from the second side of the first lens is incident almost perpendicularly to the first side of the second lens. This facilitates a smooth light transition, reduces light energy loss, improves illumination in the peripheral field of view, and alters the trajectory of peripheral rays, reducing the lens's front aperture and overall size, thus contributing to miniaturization and cost reduction.

[0098] In an exemplary embodiment, the third lens has negative optical power, with both its first and second sides being concave. The negative optical power of the third lens diverges light rays. Under the same field of view, light rays exiting through the second side of the second lens can provide a larger light-receiving surface for subsequent optical systems. Simultaneously, the concave shape of the first side of the third lens towards the object side causes a significant light reversal upon entering the lens, altering the trend of large-angle light rays. Furthermore, the concave shape of the first side of the third lens, in conjunction with the concave shape of the second side of the second lens, changes the trajectory of peripheral light rays, reducing the lens's front aperture and overall size, thus facilitating miniaturization and cost reduction.

[0099] In an exemplary embodiment, the third lens has negative optical power, with a concave first side and a convex second side. The negative optical power of the third lens diverges light rays, which, when combined with the negative optical power of the second lens, facilitates smoother light entry into the rear lens, improving resolution. The concave first side of the third lens allows for rapid accumulation of the optical path difference between the edge and center field rays, correcting aberrations in the edge field and further improving resolution. The convex second side of the third lens deflects edge field rays upwards, reducing the system's rear port diameter.

[0100] In an exemplary embodiment, the fourth lens has positive optical power, and its first and second sides are convex. The fourth lens has positive optical power and a gently sloping shape. The convex first side of the fourth lens compresses the angle of the incident light, achieving a smooth transition of light rays and allowing diverging light to smoothly enter the rear, further smoothing the light path and facilitating a reduction in the aperture of the rear lens. Furthermore, the second side of the third lens differs significantly in shape from the first side of the fourth lens, resulting in a significant alteration of the light path by the fourth lens. With the same aperture of the fourth lens, a reduction in the front aperture of the lens can be achieved, leading to lens miniaturization.

[0101] In an exemplary embodiment, the fourth lens has positive optical power, with its first side surface being convex and its second side surface being concave. The positive optical power of the fourth lens means that light rays are incident almost perpendicularly onto its second side surface, resulting in a smooth light transition and minimal aberrations, which is beneficial for achieving high resolution and improving the resolving power of the optical system. The convex first side surface of the fourth lens collects light rays entering through the third lens, facilitating light convergence and ensuring a smooth light path transition. Furthermore, the significant shape difference between the second side surface of the third lens and the first side surface of the fourth lens results in a significant alteration of the light path by the fourth lens. With the same aperture of the fourth lens, this allows for a reduction in the front aperture of the lens, enabling lens miniaturization.

[0102] In an exemplary embodiment, the fourth lens has positive optical power, with its first side being concave and its second side being convex. Specifically, the fourth lens is a meniscus spherical mirror concave towards the object side, collecting light rays entering through the third lens. The positive optical power of the fourth lens facilitates proper light convergence and a smooth transition of light path. Because the first side of the fourth lens is concave and the second side is convex, light rays are almost perpendicularly incident upon reaching the second side, resulting in minimal light deflection and energy loss, while also reducing the sensitivity of the lens.

[0103] In an exemplary embodiment, the fifth lens has positive optical power, and its first and second sides are convex. The fifth lens, with its positive optical power and gently sloping shape, converges light rays and allows them to converge smoothly onto the second side, improving astigmatism and field curvature, and enhancing the resolving power of the optical system. The biconvex shape and gently sloping shape of the fifth lens ensure that diverging light rays converge smoothly and enter the rear, further smoothing the light path to the second side and reducing CRA (Current Aberration).

[0104] In an exemplary embodiment, the sixth lens has positive optical power, with its first and second sides being convex. The positive optical power of the sixth lens causes light rays to converge, reducing their upward trajectory and preventing energy loss due to excessive angles between the large field-of-view light rays and the chip's principal ray when they reach the imaging surface. This improves illumination at the edges of the field of view. The sixth lens is biconvex with a gently sloping shape, allowing diverging light rays to smoothly enter the rear, effectively improving image quality and optimizing distortion. Simultaneously, it ensures that the light rays converge effectively and smoothly at the final point, allowing them to reach the imaging surface steadily.

[0105] In an exemplary embodiment, the seventh lens has negative optical power, with its first and second sides being concave. The negative optical power of the seventh lens collects light rays entering through the sixth lens, facilitating a smoother light path. The concave first and second sides of the seventh lens mean that light rays from the edge field of view have a longer optical path after passing through the sixth lens than those from the center field of view. This alters the light path of the edge field of view, making it more concentrated when reaching the imaging plane, correcting edge field of view aberrations, and achieving high resolution.

[0106] In an exemplary embodiment, the seventh lens has negative optical power, with its first side being concave and its second side being convex. Specifically, the seventh lens is a meniscus spherical lens concave towards the object side, collecting light rays entering through the sixth lens. The negative optical power facilitates proper light diffusion, resulting in a smoother light path transition. Because the first side of the seventh lens is concave and the second side is convex, light rays are almost perpendicularly incident upon reaching the second side, resulting in minimal light deflection and energy loss, while also reducing the lens's sensitivity.

[0107] In an exemplary embodiment, the eighth lens has positive optical power, with its first side surface being convex and its second side surface being concave. The eighth lens is aspherical, has positive optical power, and has a gently sloping shape. Light rays are incident almost perpendicularly onto the second side surface of the eighth lens, resulting in a smooth light path and minimal aberrations. This facilitates high resolution and improves the resolving power of the optical system.

[0108] In an exemplary embodiment, the eighth lens has positive optical power, and its first side surface is convex, and its second side surface is convex. The eighth lens is aspherical, has positive optical power, and has a gently sloping shape, allowing diverging light rays to smoothly enter the rear, further smoothing the transition of light paths, which can improve astigmatism and field curvature in imaging, and enhance the resolving power of the optical system.

[0109] In an exemplary embodiment, an aperture stop may be provided between the fifth and sixth lenses to limit the light beam and further improve the imaging quality of the optical lens. The aperture stop helps to concentrate the light entering the optical system, reduce the rear aperture of the optical system, and decrease the system's assembly sensitivity. In this embodiment, the aperture stop may be located near the first side of the sixth lens, near the second side of the fifth lens, or at an intermediate position between the fifth and sixth lenses. However, it should be noted that the positions of the aperture stops disclosed herein are merely examples and not limitations; in alternative embodiments, the aperture stop may be placed at other positions as needed.

[0110] In an exemplary embodiment, the optical lens according to this application satisfies: TTL / H / FOV×180°≤90, where TTL is the distance on the optical axis from the center of the first side of the first lens to the imaging plane of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, and FOV is the maximum field of view of the optical lens. More specifically, TTL, H, and FOV can further satisfy: TTL / H / FOV×180°≤18. Satisfying TTL / H / FOV×180°≤90 is beneficial for effectively limiting the length of the optical lens under the same imaging plane and the same image height, thereby achieving miniaturization of the optical lens.

[0111] In an exemplary embodiment, the optical lens according to this application satisfies: TTL / H / θ ≤ 5, where TTL is the distance on the optical axis from the center of the first side of the first lens to the imaging surface of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, and θ is the radian value corresponding to the maximum field of view of the optical lens. More specifically, TTL, H, and θ can further satisfy: TTL / H / θ ≤ 3.5. Satisfying TTL / H / θ ≤ 5 is beneficial for effectively limiting the length of the optical lens under the same imaging surface and the same image height, thereby achieving miniaturization of the optical lens.

[0112] In an exemplary embodiment, the optical lens according to this application satisfies: TTL / (F×FOV)×180°≤90, where TTL is the distance on the optical axis from the center of the first side of the first lens to the imaging plane of the optical lens, F is the focal length of the optical lens, and FOV is the maximum field of view of the optical lens. More specifically, TTL, F, and FOV can further satisfy: TTL / (F×FOV)×180°≤36. Satisfying TTL / (F×FOV)×180°≤90 is beneficial for effectively limiting the length of the optical lens and achieving miniaturization of the optical lens when the maximum field of view and focal length of the optical lens are constant.

[0113] In an exemplary embodiment, the optical lens according to this application satisfies: TTL / (F×θ)≤8, where TTL is the distance on the optical axis from the center of the first side of the first lens to the imaging plane of the optical lens, F is the focal length of the optical lens, and θ is the radian value corresponding to the maximum field of view of the optical lens. More specifically, TTL, F, and θ can further satisfy: TTL / (F×θ)≤6. Satisfying TTL / (F×θ)≤8 is beneficial for effectively limiting the length of the optical lens and achieving miniaturization of the optical lens when the maximum field of view and focal length of the optical lens are constant.

[0114] In an exemplary embodiment, the optical lens according to this application satisfies: D / H / θ≤2, where D is the maximum aperture of the first side of the first lens corresponding to the maximum field of view of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, and θ is the radian value corresponding to the maximum field of view of the optical lens. More specifically, D, H, and θ can further satisfy: D / H / θ≤1.5. Satisfying D / H / θ≤2 is beneficial for reducing the front aperture of the optical lens, thereby achieving lens miniaturization.

[0115] In an exemplary embodiment, the optical lens according to this application satisfies: 0.1 ≤ D / H ≤ 5, where D is the maximum aperture of the first side of the first lens corresponding to the maximum field of view of the optical lens, and H is the image height corresponding to the maximum field of view of the optical lens. More specifically, D and H may further satisfy: 1 ​​≤ D / H ≤ 3. Satisfying 0.1 ≤ D / H ≤ 5 is beneficial for reducing the front aperture of the optical lens, thereby achieving lens miniaturization.

[0116] In an exemplary embodiment, the optical lens according to this application satisfies: R9 / F ≥ 0.5, where R9 is the radius of curvature of the first side surface of the fifth lens, and F is the focal length of the optical lens. More specifically, R9 and F can further satisfy: R9 / F ≥ 1.4. Satisfying R9 / F ≥ 0.5, the first side surface of the fifth lens is convex, and by controlling the radius of curvature of the first side surface of the fifth lens within a certain range, light rays emitted from the fourth lens enter the first side surface of the fifth lens almost perpendicularly, resulting in a smoother light transition, which helps reduce light energy loss. Simultaneously, the smoother light entry into the rear lenses produces smaller aberrations, which is beneficial for achieving high resolution.

[0117] In an exemplary embodiment, the optical lens according to this application satisfies: 0.1 ≤ F / H ≤ 1, where F is the focal length of the optical lens and H is the image height corresponding to the maximum field of view of the optical lens. More specifically, F and H may further satisfy: 0.3 ≤ F / H ≤ 0.7. Satisfying 0.1 ≤ F / H ≤ 1 is beneficial for achieving high resolution.

[0118] In an exemplary embodiment, the optical lens according to this application satisfies: 1 ≤ F8 / F ≤ 30, where F8 is the focal length of the eighth lens and F is the focal length of the optical lens. More specifically, F8 and F may further satisfy: 2 ≤ F8 / F ≤ 25. By satisfying 1 ≤ F8 / F ≤ 30, the eighth lens is preferably an aspherical lens. This reasonable allocation of the eighth lens's focal length ensures that the lens maintains a stable focal length over a wide temperature range, exhibiting excellent temperature performance and allowing the entire optical lens to maintain stable performance under temperature variations.

[0119] In an exemplary embodiment, the optical lens according to this application satisfies the following condition: F / ENPD ≤ 2, where F is the focal length of the optical lens and ENPD is the entrance pupil diameter of the optical lens. More specifically, F and ENPD can further satisfy: F / ENPD ≤ 1.85. Satisfying F / ENPD ≤ 2 is beneficial for reducing FNO, increasing light transmission, and improving relative illumination.

[0120] In an exemplary embodiment, the optical lens according to this application satisfies: 0.01 ≤ (d12 + d13) / TTL ≤ 0.5, where d12 is the center thickness of the sixth lens, d13 is the center thickness of the seventh lens, and TTL is the distance on the optical axis from the center of the first side of the first lens to the imaging plane of the optical lens. More specifically, d12, d13, and TTL further satisfy: 0.05 ≤ (d12 + d13) / TTL ≤ 0.3. Satisfying 0.01 ≤ (d12 + d13) / TTL ≤ 0.5, the cemented joint composed of the sixth and seventh lenses, with an appropriate increase in the center thickness of the cemented joint lens within a certain range, is beneficial for enhancing the light control capability, controlling more light to enter the rear system, and improving relative illumination.

[0121] In an exemplary embodiment, the optical lens according to this application satisfies: |(HF×θ) / (F×θ)|≤0.2, where H is the image height corresponding to the maximum field of view of the optical lens, F is the focal length of the optical lens, and θ is the radian value corresponding to the maximum field of view of the optical lens. More specifically, H, F, and θ further satisfy: |(HF×θ) / (F×θ)|≤0.17. Satisfying |(HF×θ) / (F×θ)|≤0.2 is beneficial for increasing the focal length of the optical lens while keeping the field of view and the size of the imaging plane unchanged, thus highlighting the imaging effect of the central region of the imaging plane.

[0122] In an exemplary embodiment, the optical lens according to this application satisfies: 1 ≤ R15 / F ≤ 8, where R15 is the radius of curvature of the first side surface of the eighth lens, and F is the focal length of the optical lens. More specifically, R15 and F can further satisfy: 1.5 ≤ R15 / F ≤ 6. Satisfying 1 ≤ R15 / F ≤ 8 ensures that the first side surface of the eighth lens is convex, and by controlling the first side surface of the eighth lens within a certain range, light rays emitted from the seventh lens enter the first side surface of the eighth lens almost perpendicularly, resulting in a smoother light path to the imaging plane, which is beneficial for achieving a small CRA (Current Radiation Amplitude Reduction).

[0123] In an exemplary embodiment, the optical lens according to this application satisfies: 1.5 ≤ (d14 × BFL) / (d14 + BFL), where d14 is the air gap between the seventh and eighth lenses, and BFL is the distance from the center of the second side surface of the eighth lens to the center of the imaging plane. More specifically, d14 and BFL may further satisfy: 1.7 ≤ (d14 × BFL) / (d14 + BFL). Satisfying 1.5 ≤ (d14 × BFL) / (d14 + BFL) is beneficial for increasing assembly yield and also allows the optical lens to have sufficient back focal length to accommodate other optical components, thereby increasing design flexibility.

[0124] In an exemplary embodiment, the optical lens according to this application can satisfy: in, It is the optical power of the first lens. It refers to the optical focal length of the lens. More specifically, and Further, it can be satisfied: satisfy It helps to correct astigmatism in optical lenses and improve their resolution.

[0125] In an exemplary embodiment, the optical lens according to this application satisfies: 0.3 ≤ FOV / 2 / (H / 2). ^2Where H is the image height corresponding to the maximum field of view of the optical lens, and FOV is the maximum field of view of the optical lens. More specifically, H and FOV can further satisfy: 1≤FOV / 2 / (H / 2) ^2 The condition 0.3 ≤ FOV / 2 / (H / 2) is satisfied. ^2 This is beneficial for increasing the field of view and reducing the corresponding image height under the same field of view, which is beneficial for receiving light from a larger angle and reducing distortion.

[0126] In an exemplary embodiment, the optical lens according to this application satisfies: 1.6 ≤ TTL / D ≤ ​​3.5, where TTL is the distance on the optical axis from the center of the first side of the first lens to the imaging plane of the optical lens, and D is the maximum aperture of the first side of the first lens corresponding to the maximum field of view of the optical lens. More specifically, TTL and D can further satisfy: 2 ≤ TTL / D ≤ ​​3. Satisfying 1.6 ≤ TTL / D ≤ ​​3.5 is beneficial for making the entire optical lens more compact and achieving miniaturization.

[0127] In an exemplary embodiment, the optical lens according to this application satisfies: 1 ≤ R15 / d15 ≤ 20, where R15 is the radius of curvature of the first side of the eighth lens, and d15 is the center thickness of the eighth lens. More specifically, R15 and d15 further satisfy: 3 ≤ R15 / d15 ≤ 15. Satisfying 1 ≤ R15 / d15 ≤ 20 is beneficial for correcting aberrations and can also help to smooth the light path, especially the light at the edge of the field of view, which can better correct aberrations, improve image quality, and achieve high resolution.

[0128] In an exemplary embodiment, the optical lens according to this application satisfies: TTL / BFL ≥ 5.5, where TTL is the distance on the optical axis from the center of the first side surface of the first lens to the imaging plane of the optical lens, and BFL is the distance from the center of the second side surface of the eighth lens to the center of the imaging plane. More specifically, TTL and BFL can further satisfy: TTL / BFL ≥ 6. Satisfying TTL / BFL ≥ 5.5, while achieving miniaturization, results in a longer back focal length, which is beneficial for the assembly of the optical lens module. At the same time, lengthening the back focal length helps to reduce the energy of ghost images generated by reflections from the center of the lens and color filter.

[0129] In an exemplary embodiment, the optical lens of this application may, as needed, include a filter and / or protective glass disposed between the eighth lens and the imaging surface to filter light of different wavelengths and prevent damage to the image-side elements (e.g., chips) of the optical lens.

[0130] In an exemplary embodiment, the first to eighth lenses can be spherical lenses or aspherical lenses. This application does not specifically limit the number of spherical and aspherical lenses; when image quality is a primary concern, the number of aspherical lenses can be increased, and even all lenses can be aspherical. In particular, to improve the resolving quality of the optical system, the eighth lens can be an aspherical lens. Aspherical lenses are characterized by a continuously changing curvature from the lens center to the periphery. Unlike spherical lenses, which have a constant curvature from the lens center to the periphery, aspherical lenses have better radius of curvature characteristics, offering advantages in improving distortion aberrations and astigmatism. Using aspherical lenses can eliminate aberrations that occur during imaging as much as possible, thereby improving the image quality of the lens. The use of aspherical lenses helps correct system aberrations and improve resolving power.

[0131] Optical lenses made of glass can suppress the shift in back focus of an optical lens due to temperature changes, thereby improving system stability. At the same time, using glass avoids image blurring caused by high and low temperature variations in the operating environment, thus preventing interference with normal lens use. For example, an all-glass optical lens has a wider temperature range, maintaining stable optical performance within -40℃ to 105℃. Specifically, when image quality and reliability are paramount, the first to eighth lenses can all be glass lenses. Of course, in applications with lower temperature stability requirements, the first to eighth lenses in an optical lens can also be made entirely of plastic. Using plastic to make optical lenses can effectively reduce manufacturing costs. Alternatively, the first to eighth lenses in an optical lens can also be made of a combination of plastic and glass.

[0132] In an exemplary embodiment, the sixth and seventh lenses of the optical lens form a cemented lens. The cemented lens smoothly transitions light rays from the front lens to the rear optical system, reducing the overall length of the optical lens and allowing for sufficient correction of various aberrations in the optical system. This improves resolution and optimizes optical performance such as distortion and CRA while maintaining a compact structure. Specifically, the reduced air gap between the sixth and seventh lenses after forming the cemented lens helps to decrease the overall length of the optical lens. The complementary chromatic aberration of the sixth and seventh lenses helps to reduce chromatic aberration and improve image quality. Furthermore, the cemented lens structure reduces the number of components and assembly steps, lowering costs. It also reduces field curvature and corrects off-axis point aberrations in the optical system. Appropriately allocating the focal length of the cemented lens helps to achieve thermal compensation and obtain good temperature performance.

[0133] In an exemplary embodiment, the eighth lens of the optical lens has a curved surface, which helps to balance aberrations and improve resolution. The object-side surface of the eighth lens is curved, with a convex central portion and a concave edge portion. This causes a significant light reversal when edge rays enter the eighth lens, changing the trend of large-angle rays. This helps to collect large-angle rays within a limited space, allowing the light to reach the image plane more smoothly and improving image quality.

[0134] The optical lens according to the above embodiments of this application, through the reasonable setting of the shape and power of each lens, achieves at least one beneficial effect such as small aperture, miniaturization, high resolution, small CRA, large aperture, high illumination, large field of view, low distortion, and long focal length when using only eight lenses.

[0135] However, those skilled in the art will understand that the number of lenses constituting the lens can be varied to obtain the various results and advantages described in this specification without departing from the technical solutions claimed in this application. For example, although eight lenses are described as an example in the embodiments, the optical lens is not limited to including eight lenses. If desired, the optical lens may also include other numbers of lenses. Specific embodiments of the optical lens applicable to the above embodiments are further described below with reference to the accompanying drawings.

[0136] Example 1

[0137] The following is for reference Figure 1 An optical lens according to Embodiment 1 of this application is described. Figure 1 A schematic diagram of the structure of an optical lens according to Embodiment 1 of this application is shown.

[0138] like Figure 1 As shown, the optical lens includes, in sequence from the first side to the second side, 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, and an eighth lens L8.

[0139] The first lens L1 is a convex-concave lens with negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 is a convex-concave lens with negative optical power, its first side surface S3 is convex, and its second side surface S4 is concave. The third lens L3 is a concave-concave lens with negative optical power, its first side surface S5 is concave, and its second side surface S6 is concave. The fourth lens L4 is a convex-convex lens with positive optical power, its first side surface S7 is convex, and its second side surface S8 is convex. The fifth lens L5 is a convex-convex lens with positive optical power, its first side surface S9 is convex, and its second side surface S10 is convex. The sixth lens L6 is a convex-convex lens with positive optical power, its first side surface S12 is convex, and its second side surface S13 is convex. The seventh lens L7 is a concave-convex lens with negative optical power, its first side surface S13 is concave, and its second side surface S14 is convex. The eighth lens L8 is a convex-concave lens with positive optical power. Its first side surface S15 is convex, and its second side surface S16 is concave. The sixth lens L6 and the seventh lens L7 can be cemented together to form a cemented lens. The first side surface S15 and the second side surface S16 of the eighth lens L8 are inverted.

[0140] The optical lens may also include an aperture stop STO, which may be positioned between the fifth lens L5 and the sixth lens L6 to improve image quality. For example, the aperture stop STO may be positioned between the fifth lens L5 and the sixth lens L6 near the first side surface S12 of the sixth lens L6.

[0141] Optionally, the optical lens may also include a filter L9 having a first side surface S17 and a second side surface S18 and / or a protective glass (not shown) having a first side surface and a second side surface. The filter L8 and / or the protective glass can be used to correct color deviation, and the filter L9 and / or the protective glass can also be used to protect the image sensor chip (IMA) located at the imaging surface. Light from the object passes sequentially through each surface S1 to S18 and is finally imaged on the imaging surface.

[0142] The optical lens provided in this application can be used, for example, as a vehicle-mounted lens. In this case, light from the object sequentially passes through each surface S1 to S18 and is finally imaged onto an imaging surface disposed on the second side, wherein an image sensor chip IMA is disposed on the imaging surface. It should be understood that the optical lens provided in this application can also be used, for example, as a projection lens or a lidar transmitter lens. In this case, light from the image source surface sequentially passes through each surface S18 to S1 and is finally projected onto a projection surface (not shown) disposed on the first side, wherein an image sensor chip IMA is disposed on the image source surface.

[0143] Table 1 shows the radius of curvature R, thickness / distance d (it should be understood that the thickness / distance d in the row where S1 is located is the center thickness d1 of the first lens L1, the thickness / distance d in the row where S2 is located is the distance d12 between the second side surface S2 of the first lens L1 and the first side surface S3 of the second lens L2, and so on), refractive index Nd, and Abbe number Vd of each lens of the optical lens of Embodiment 1.

[0144]

[0145]

[0146] Table 1

[0147] In Embodiment 1, the first side surface S15 and the second side surface S16 of the eighth lens L8 can be aspherical, and the surface shape x of each aspherical lens can be defined using, but is not limited to, the following aspherical formula:

[0148]

[0149] Where x is the distance vector from the vertex of the aspherical surface at a height 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 radius of curvature R in Table 1 above); k is the conic coefficient; Ai is the i-th order correction coefficient of the aspherical surface. Table 2 below gives the conic coefficient k and higher-order coefficients A4, A6, A8, A10, A12, A14 and A16 that can be used for the aspherical mirrors S15 and S16 in Example 1.

[0150] Face number k A4 A6 A8 A10 A12 A14 A16 S15 -32.8150 1.6181E-03 -2.3051E-04 1.4410E-05 -6.8358E-07 1.6401E-08 -1.80E-10 7.21E-13 S16 -14.3160 1.3296E-04 -6.1477E-05 3.3987E-07 1.1862E-07 -9.9267E-09 3.23E-10 -3.69E-12

[0151] Table 2

[0152] Example 2

[0153] The following is for reference Figure 2 An optical lens according to Embodiment 2 of this application is described. In this embodiment and the following embodiments, for the sake of brevity, descriptions similar to those in Embodiment 1 will be omitted. Figure 2 A schematic diagram of the structure of an optical lens according to Embodiment 2 of this application is shown.

[0154] like Figure 2 As shown, the optical lens includes, in sequence from the first side to the second side, 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, and an eighth lens L8.

[0155] The first lens L1 is a convex-concave lens with negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 is a convex-concave lens with negative optical power, its first side surface S3 is convex, and its second side surface S4 is concave. The third lens L3 is a concave-concave lens with negative optical power, its first side surface S5 is concave, and its second side surface S6 is concave. The fourth lens L4 is a convex-convex lens with positive optical power, its first side surface S7 is convex, and its second side surface S8 is convex. The fifth lens L5 is a convex-convex lens with positive optical power, its first side surface S9 is convex, and its second side surface S10 is convex. The sixth lens L6 is a convex-convex lens with positive optical power, its first side surface S12 is convex, and its second side surface S13 is convex. The seventh lens L7 is a concave-convex lens with negative optical power, its first side surface S13 is concave, and its second side surface S14 is convex. The eighth lens L8 is a convex-concave lens with positive optical power. Its first side surface S15 is convex, and its second side surface S16 is concave. The sixth lens L6 and the seventh lens L7 can be cemented together to form a cemented lens. The first side surface S15 and the second side surface S16 of the eighth lens L8 are inverted.

[0156] The optical lens may also include an aperture stop STO, which may be positioned between the fifth lens L5 and the sixth lens L6 to improve image quality. For example, the aperture stop STO may be positioned between the fifth lens L5 and the sixth lens L6 near the first side surface S12 of the sixth lens L6.

[0157] Optionally, the optical lens may also include a filter L9 having a first side surface S17 and a second side surface S18 and / or a protective glass (not shown) having a first side surface and a second side surface. The filter L8 and / or the protective glass can be used to correct color deviation, and the filter L9 and / or the protective glass can also be used to protect the image sensor chip (IMA) located at the imaging surface. Light from the object passes sequentially through each surface S1 to S18 and is finally imaged on the imaging surface.

[0158] The optical lens provided in this application can be used, for example, as a vehicle-mounted lens. In this case, light from the object sequentially passes through each surface S1 to S18 and is finally imaged onto an imaging surface disposed on the second side, wherein an image sensor chip IMA is disposed on the imaging surface. It should be understood that the optical lens provided in this application can also be used, for example, as a projection lens or a lidar transmitter lens. In this case, light from the image source surface sequentially passes through each surface S18 to S1 and is finally projected onto a projection surface (not shown) disposed on the first side, wherein an image sensor chip IMA is disposed on the image source surface.

[0159] Table 3 shows the radius of curvature R, thickness / distance d, refractive index Nd, and Abbe number Vd of each lens in the optical lens of Example 2. Table 4 shows the conic coefficients and higher-order coefficients that can be used for each aspherical mirror in Example 2, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0160]

[0161] Table 3

[0162] Face number k A4 A6 A8 A10 A12 A14 A16 S15 -32.8150 1.6181E-03 -2.3051E-04 1.4410E-05 -6.8358E-07 1.6237E-08 -1.7966E-10 7.1375E-13 S16 -14.0300 1.3968E-04 -6.2098E-05 3.3987E-07 1.1862E-07 -9.9267E-09 3.1914E-10 -3.6851E-12

[0163] Table 4

[0164] Example 3

[0165] The following is for reference Figure 3 An optical lens according to Embodiment 3 of this application is described. Figure 3 A schematic diagram of the structure of an optical lens according to Embodiment 3 of this application is shown.

[0166] like Figure 3 As shown, the optical lens includes, in sequence from the first side to the second side, 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, and an eighth lens L8.

[0167] The first lens L1 is a convex-concave lens with negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 is a convex-concave lens with negative optical power, its first side surface S3 is convex, and its second side surface S4 is concave. The third lens L3 is a concave-concave lens with negative optical power, its first side surface S5 is concave, and its second side surface S6 is concave. The fourth lens L4 is a convex-convex lens with positive optical power, its first side surface S7 is convex, and its second side surface S8 is convex. The fifth lens L5 is a convex-convex lens with positive optical power, its first side surface S9 is convex, and its second side surface S10 is convex. The sixth lens L6 is a convex-convex lens with positive optical power, its first side surface S12 is convex, and its second side surface S13 is convex. The seventh lens L7 is a concave-concave lens with negative optical power, its first side surface S13 is concave, and its second side surface S14 is concave. The eighth lens L8 is a convex-concave lens with positive optical power. Its first side surface S15 is convex, and its second side surface S16 is concave. The sixth lens L6 and the seventh lens L7 can be cemented together to form a cemented lens. The first side surface S15 and the second side surface S16 of the eighth lens L8 are inverted.

[0168] The optical lens may also include an aperture stop STO, which may be positioned between the fifth lens L5 and the sixth lens L6 to improve image quality. For example, the aperture stop STO may be positioned between the fifth lens L5 and the sixth lens L6 near the second side surface S10 of the fifth lens L5.

[0169] Optionally, the optical lens may also include a filter L9 having a first side surface S17 and a second side surface S18 and / or a protective glass (not shown) having a first side surface and a second side surface. The filter L8 and / or the protective glass can be used to correct color deviation, and the filter L9 and / or the protective glass can also be used to protect the image sensor chip (IMA) located at the imaging surface. Light from the object passes sequentially through each surface S1 to S18 and is finally imaged on the imaging surface.

[0170] The optical lens provided in this application can be used, for example, as a vehicle-mounted lens. In this case, light from the object sequentially passes through each surface S1 to S18 and is finally imaged onto an imaging surface disposed on the second side, wherein an image sensor chip IMA is disposed on the imaging surface. It should be understood that the optical lens provided in this application can also be used, for example, as a projection lens or a lidar transmitter lens. In this case, light from the image source surface sequentially passes through each surface S18 to S1 and is finally projected onto a projection surface (not shown) disposed on the first side, wherein an image sensor chip IMA is disposed on the image source surface.

[0171] Table 5 shows the radius of curvature R, thickness / distance d, refractive index Nd, and Abbe number Vd of each lens in the optical lens of Example 3. Table 6 shows the conic coefficients and higher-order coefficients that can be used for each aspherical mirror in Example 3, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0172]

[0173]

[0174] Table 5

[0175] Face number k A4 A6 A8 A10 A12 A14 A16 S15 -54.9030 5.1871E-04 -1.2656E-04 7.3963E-06 -3.6936E-07 9.3980E-09 -1.0510E-10 3.9086E-13 S16 14.0690 -5.4741E-04 -3.1419E-05 1.7352E-06 -1.0023E-07 3.2145E-09 -5.0418E-11 2.8778E-13

[0176] Table 6

[0177] Example 4

[0178] The following is for reference Figure 4 An optical lens according to Embodiment 4 of this application is described. Figure 4 A schematic diagram of the structure of an optical lens according to Embodiment 4 of this application is shown.

[0179] like Figure 4As shown, the optical lens includes, in sequence from the first side to the second side, 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, and an eighth lens L8.

[0180] The first lens L1 is a convex-concave lens with negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 is a convex-concave lens with negative optical power, its first side surface S3 is convex, and its second side surface S4 is concave. The third lens L3 is a concave-concave lens with negative optical power, its first side surface S5 is concave, and its second side surface S6 is concave. The fourth lens L4 is a convex-convex lens with positive optical power, its first side surface S7 is convex, and its second side surface S8 is convex. The fifth lens L5 is a convex-convex lens with positive optical power, its first side surface S9 is convex, and its second side surface S10 is convex. The sixth lens L6 is a convex-convex lens with positive optical power, its first side surface S12 is convex, and its second side surface S13 is convex. The seventh lens L7 is a concave-concave lens with negative optical power, its first side surface S13 is concave, and its second side surface S14 is concave. The eighth lens L8 is a convex-concave lens with positive optical power. Its first side surface S15 is convex, and its second side surface S16 is concave. The sixth lens L6 and the seventh lens L7 can be cemented together to form a cemented lens. The first side surface S15 and the second side surface S16 of the eighth lens L8 are inverted.

[0181] The optical lens may also include an aperture stop STO, which may be positioned between the fifth lens L5 and the sixth lens L6 to improve image quality. For example, the aperture stop STO may be positioned between the fifth lens L5 and the sixth lens L6 near the second side surface S10 of the fifth lens L5.

[0182] Optionally, the optical lens may also include a filter L9 having a first side surface S17 and a second side surface S18 and / or a protective glass (not shown) having a first side surface and a second side surface. The filter L8 and / or the protective glass can be used to correct color deviation, and the filter L9 and / or the protective glass can also be used to protect the image sensor chip (IMA) located at the imaging surface. Light from the object passes sequentially through each surface S1 to S18 and is finally imaged on the imaging surface.

[0183] The optical lens provided in this application can be used, for example, as a vehicle-mounted lens. In this case, light from the object sequentially passes through each surface S1 to S18 and is finally imaged onto an imaging surface disposed on the second side, wherein an image sensor chip IMA is disposed on the imaging surface. It should be understood that the optical lens provided in this application can also be used, for example, as a projection lens or a lidar transmitter lens. In this case, light from the image source surface sequentially passes through each surface S18 to S1 and is finally projected onto a projection surface (not shown) disposed on the first side, wherein an image sensor chip IMA is disposed on the image source surface.

[0184] Table 7 shows the radius of curvature R, thickness / distance d, refractive index Nd, and Abbe number Vd of each lens in the optical lens of Example 4. Table 8 shows the conic coefficients and higher-order coefficients that can be used for each aspherical mirror in Example 4, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0185]

[0186] Table 7

[0187]

[0188]

[0189] Table 8

[0190] Example 5

[0191] The following is for reference Figure 5 An optical lens according to Embodiment 5 of this application is described. Figure 5 A schematic diagram of the structure of an optical lens according to Embodiment 5 of this application is shown.

[0192] like Figure 5 As shown, the optical lens includes, in sequence from the first side to the second side, 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, and an eighth lens L8.

[0193] The first lens L1 is a convex-concave lens with negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 is a convex-concave lens with negative optical power, its first side surface S3 is convex, and its second side surface S4 is concave. The third lens L3 is a concave-convex lens with negative optical power, its first side surface S5 is concave, and its second side surface S6 is convex. The fourth lens L4 is a concave-convex lens with positive optical power, its first side surface S7 is concave, and its second side surface S8 is convex. The fifth lens L5 is a convex-convex lens with positive optical power, its first side surface S9 is convex, and its second side surface S10 is convex. The sixth lens L6 is a convex-convex lens with positive optical power, its first side surface S12 is convex, and its second side surface S13 is convex. The seventh lens L7 is a concave-convex lens with negative optical power, its first side surface S13 is concave, and its second side surface S14 is convex. The eighth lens L8 is a convex-concave lens with positive optical power. Its first side surface S15 is convex, and its second side surface S16 is concave. The sixth lens L6 and the seventh lens L7 can be cemented together to form a cemented lens. The first side surface S15 and the second side surface S16 of the eighth lens L8 are inverted.

[0194] The optical lens may also include an aperture stop STO, which may be positioned between the fifth lens L5 and the sixth lens L6 to improve image quality. For example, the aperture stop STO may be positioned between the fifth lens L5 and the sixth lens L6 near the second side surface S10 of the fifth lens L5.

[0195] Optionally, the optical lens may also include a filter L9 having a first side surface S17 and a second side surface S18 and / or a protective glass (not shown) having a first side surface and a second side surface. The filter L8 and / or the protective glass can be used to correct color deviation, and the filter L9 and / or the protective glass can also be used to protect the image sensor chip (IMA) located at the imaging surface. Light from the object passes sequentially through each surface S1 to S18 and is finally imaged on the imaging surface.

[0196] The optical lens provided in this application can be used, for example, as a vehicle-mounted lens. In this case, light from the object sequentially passes through each surface S1 to S18 and is finally imaged onto an imaging surface disposed on the second side, wherein an image sensor chip IMA is disposed on the imaging surface. It should be understood that the optical lens provided in this application can also be used, for example, as a projection lens or a lidar transmitter lens. In this case, light from the image source surface sequentially passes through each surface S18 to S1 and is finally projected onto a projection surface (not shown) disposed on the first side, wherein an image sensor chip IMA is disposed on the image source surface.

[0197] Table 9 shows the radius of curvature R, thickness / distance d, refractive index Nd, and Abbe number Vd of each lens in the optical lens of Example 5. Table 10 shows the conic coefficients and higher-order coefficients that can be used for each aspherical mirror in Example 5, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0198]

[0199]

[0200] Table 9

[0201] Face number k A4 A6 A8 A10 A12 A14 A16 S15 -29.1100 8.6079E-04 -1.4417E-04 9.3293E-06 -4.7218E-07 1.1229E-08 -1.2133E-10 4.8106E-13 S16 -20.1500 8.1893E-05 -8.7272E-05 4.5840E-06 -1.6691E-07 3.1422E-09 -8.8111E-12 -2.9437E-13

[0202] Table 10

[0203] Example 6

[0204] The following is for reference Figure 6 An optical lens according to Embodiment 6 of this application is described. Figure 6 A schematic diagram of the structure of an optical lens according to Embodiment 6 of this application is shown.

[0205] like Figure 6As shown, the optical lens includes, in sequence from the first side to the second side, 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, and an eighth lens L8.

[0206] The first lens L1 is a convex-concave lens with negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 is a convex-concave lens with negative optical power, its first side surface S3 is convex, and its second side surface S4 is concave. The third lens L3 is a concave-convex lens with negative optical power, its first side surface S5 is concave, and its second side surface S6 is convex. The fourth lens L4 is a concave-convex lens with positive optical power, its first side surface S7 is concave, and its second side surface S8 is convex. The fifth lens L5 is a convex-convex lens with positive optical power, its first side surface S9 is convex, and its second side surface S10 is convex. The sixth lens L6 is a convex-convex lens with positive optical power, its first side surface S12 is convex, and its second side surface S13 is convex. The seventh lens L7 is a concave-convex lens with negative optical power, its first side surface S13 is concave, and its second side surface S14 is convex. The eighth lens L8 is a convex-concave lens with positive optical power. Its first side surface S15 is convex, and its second side surface S16 is concave. The sixth lens L6 and the seventh lens L7 can be cemented together to form a cemented lens. The first side surface S15 and the second side surface S16 of the eighth lens L8 are inverted.

[0207] The optical lens may also include an aperture stop STO, which may be positioned between the fifth lens L5 and the sixth lens L6 to improve image quality. For example, the aperture stop STO may be positioned between the fifth lens L5 and the sixth lens L6 near the second side surface S10 of the fifth lens L5.

[0208] Optionally, the optical lens may also include a filter L9 having a first side surface S17 and a second side surface S18 and / or a protective glass (not shown) having a first side surface and a second side surface. The filter L8 and / or the protective glass can be used to correct color deviation, and the filter L9 and / or the protective glass can also be used to protect the image sensor chip (IMA) located at the imaging surface. Light from the object passes sequentially through each surface S1 to S18 and is finally imaged on the imaging surface.

[0209] The optical lens provided in this application can be used, for example, as a vehicle-mounted lens. In this case, light from the object sequentially passes through each surface S1 to S18 and is finally imaged onto an imaging surface disposed on the second side, wherein an image sensor chip IMA is disposed on the imaging surface. It should be understood that the optical lens provided in this application can also be used, for example, as a projection lens or a lidar transmitter lens. In this case, light from the image source surface sequentially passes through each surface S18 to S1 and is finally projected onto a projection surface (not shown) disposed on the first side, wherein an image sensor chip IMA is disposed on the image source surface.

[0210] Table 11 shows the radius of curvature R, thickness / distance d, refractive index Nd, and Abbe number Vd of each lens in the optical lens of Example 6. Table 12 shows the conic coefficients and higher-order coefficients that can be used for each aspherical mirror in Example 6, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0211]

[0212] Table 11

[0213]

[0214]

[0215] Table 12

[0216] Example 7

[0217] The following is for reference Figure 7 An optical lens according to Embodiment 7 of this application is described. Figure 7 A schematic diagram of the structure of an optical lens according to Embodiment 7 of this application is shown.

[0218] like Figure 7 As shown, the optical lens includes, in sequence from the first side to the second side, 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, and an eighth lens L8.

[0219] The first lens L1 is a convex-concave lens with negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 is a convex-concave lens with negative optical power, its first side surface S3 is convex, and its second side surface S4 is concave. The third lens L3 is a concave-convex lens with negative optical power, its first side surface S5 is concave, and its second side surface S6 is convex. The fourth lens L4 is a convex-convex lens with positive optical power, its first side surface S7 is convex, and its second side surface S8 is convex. The fifth lens L5 is a convex-convex lens with positive optical power, its first side surface S9 is convex, and its second side surface S10 is convex. The sixth lens L6 is a convex-convex lens with positive optical power, its first side surface S12 is convex, and its second side surface S13 is convex. The seventh lens L7 is a concave-convex lens with negative optical power, its first side surface S13 is concave, and its second side surface S14 is convex. The eighth lens L8 is a convex-concave lens with positive optical power. Its first side surface S15 is convex, and its second side surface S16 is concave. The sixth lens L6 and the seventh lens L7 can be cemented together to form a cemented lens. The first side surface S15 and the second side surface S16 of the eighth lens L8 are inverted.

[0220] The optical lens may also include an aperture stop STO, which may be positioned between the fifth lens L5 and the sixth lens L6 to improve image quality. For example, the aperture stop STO may be positioned between the fifth lens L5 and the sixth lens L6 near the first side surface S12 of the sixth lens L6.

[0221] Optionally, the optical lens may also include a filter L9 having a first side surface S17 and a second side surface S18 and / or a protective glass (not shown) having a first side surface and a second side surface. The filter L8 and / or the protective glass can be used to correct color deviation, and the filter L9 and / or the protective glass can also be used to protect the image sensor chip (IMA) located at the imaging surface. Light from the object passes sequentially through each surface S1 to S18 and is finally imaged on the imaging surface.

[0222] The optical lens provided in this application can be used, for example, as a vehicle-mounted lens. In this case, light from the object sequentially passes through each surface S1 to S18 and is finally imaged onto an imaging surface disposed on the second side, wherein an image sensor chip IMA is disposed on the imaging surface. It should be understood that the optical lens provided in this application can also be used, for example, as a projection lens or a lidar transmitter lens. In this case, light from the image source surface sequentially passes through each surface S18 to S1 and is finally projected onto a projection surface (not shown) disposed on the first side, wherein an image sensor chip IMA is disposed on the image source surface.

[0223] Table 13 shows the radius of curvature R, thickness / distance d, refractive index Nd, and Abbe number Vd of each lens in the optical lens of Example 7. Table 14 shows the conic coefficients and higher-order coefficients that can be used for each aspherical mirror in Example 7, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0224]

[0225]

[0226] Table 13

[0227] Face number k A4 A6 A8 A10 A12 A14 A16 S15 -42.0430 2.5350E-04 -7.5581E-05 3.9561E-06 -1.9025E-07 4.7814E-09 -4.7060E-11 2.0434E-13 S16 34.9380 -6.7807E-04 -1.3864E-05 -5.8391E-08 3.8807E-08 -2.9763E-09 8.0259E-11 -9.7545E-13

[0228] Table 14

[0229] Example 8

[0230] The following is for reference Figure 8 An optical lens according to Embodiment 8 of this application is described. Figure 8 A schematic diagram of the structure of an optical lens according to Embodiment 8 of this application is shown.

[0231] like Figure 8As shown, the optical lens includes, in sequence from the first side to the second side, 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, and an eighth lens L8.

[0232] The first lens L1 is a convex-concave lens with negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 is a convex-concave lens with negative optical power, its first side surface S3 is convex, and its second side surface S4 is concave. The third lens L3 is a concave-convex lens with negative optical power, its first side surface S5 is concave, and its second side surface S6 is convex. The fourth lens L4 is a convex-convex lens with positive optical power, its first side surface S7 is convex, and its second side surface S8 is convex. The fifth lens L5 is a convex-convex lens with positive optical power, its first side surface S9 is convex, and its second side surface S10 is convex. The sixth lens L6 is a convex-convex lens with positive optical power, its first side surface S12 is convex, and its second side surface S13 is convex. The seventh lens L7 is a concave-convex lens with negative optical power, its first side surface S13 is concave, and its second side surface S14 is convex. The eighth lens L8 is a convex-concave lens with positive optical power. Its first side surface S15 is convex, and its second side surface S16 is concave. The sixth lens L6 and the seventh lens L7 can be cemented together to form a cemented lens. The first side surface S15 and the second side surface S16 of the eighth lens L8 are inverted.

[0233] The optical lens may also include an aperture stop STO, which may be positioned between the fifth lens L5 and the sixth lens L6 to improve image quality. For example, the aperture stop STO may be positioned between the fifth lens L5 and the sixth lens L6 near the first side surface S12 of the sixth lens L6.

[0234] Optionally, the optical lens may also include a filter L9 having a first side surface S17 and a second side surface S18 and / or a protective glass (not shown) having a first side surface and a second side surface. The filter L8 and / or the protective glass can be used to correct color deviation, and the filter L9 and / or the protective glass can also be used to protect the image sensor chip (IMA) located at the imaging surface. Light from the object passes sequentially through each surface S1 to S18 and is finally imaged on the imaging surface.

[0235] The optical lens provided in this application can be used, for example, as a vehicle-mounted lens. In this case, light from the object sequentially passes through each surface S1 to S18 and is finally imaged onto an imaging surface disposed on the second side, wherein an image sensor chip IMA is disposed on the imaging surface. It should be understood that the optical lens provided in this application can also be used, for example, as a projection lens or a lidar transmitter lens. In this case, light from the image source surface sequentially passes through each surface S18 to S1 and is finally projected onto a projection surface (not shown) disposed on the first side, wherein an image sensor chip IMA is disposed on the image source surface.

[0236] Table 15 shows the radius of curvature R, thickness / distance d, refractive index Nd, and Abbe number Vd of each lens in the optical lens of Example 8. Table 16 shows the conic coefficients and higher-order coefficients that can be used for each aspherical mirror in Example 8, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0237]

[0238] Table 15

[0239]

[0240] Table 16

[0241] Example 9

[0242] The following is for reference Figure 9 An optical lens according to Embodiment 9 of this application is described. Figure 9 A schematic diagram of the structure of an optical lens according to Embodiment 9 of this application is shown.

[0243] like Figure 9 As shown, the optical lens includes, in sequence from the first side to the second side, 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, and an eighth lens L8.

[0244] The first lens L1 is a convex-concave lens with negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 is a convex-concave lens with negative optical power, its first side surface S3 is convex, and its second side surface S4 is concave. The third lens L3 is a concave-convex lens with negative optical power, its first side surface S5 is concave, and its second side surface S6 is convex. The fourth lens L4 is a convex-concave lens with positive optical power, its first side surface S7 is convex, and its second side surface S8 is concave. The fifth lens L5 is a convex-convex lens with positive optical power, its first side surface S9 is convex, and its second side surface S10 is convex. The sixth lens L6 is a convex-convex lens with positive optical power, its first side surface S12 is convex, and its second side surface S13 is convex. The seventh lens L7 is a concave-concave lens with negative optical power, its first side surface S13 is concave, and its second side surface S14 is concave. The eighth lens L8 is a convex-convex lens with positive optical power. Its first side surface S15 is convex, and its second side surface S16 is convex. The sixth lens L6 and the seventh lens L7 can be cemented together to form a cemented lens. The first side surface S15 of the eighth lens L8 has a recurve shape.

[0245] The optical lens may also include an aperture stop STO, which may be positioned between the fifth lens L5 and the sixth lens L6 to improve image quality. For example, the aperture stop STO may be positioned at the midpoint between the fifth lens L5 and the sixth lens L6.

[0246] Optionally, the optical lens may also include a filter L9 having a first side surface S17 and a second side surface S18 and / or a protective glass (not shown) having a first side surface and a second side surface. The filter L8 and / or the protective glass can be used to correct color deviation, and the filter L9 and / or the protective glass can also be used to protect the image sensor chip (IMA) located at the imaging surface. Light from the object passes sequentially through each surface S1 to S18 and is finally imaged on the imaging surface.

[0247] The optical lens provided in this application can be used, for example, as a vehicle-mounted lens. In this case, light from the object sequentially passes through each surface S1 to S18 and is finally imaged onto an imaging surface disposed on the second side, wherein an image sensor chip IMA is disposed on the imaging surface. It should be understood that the optical lens provided in this application can also be used, for example, as a projection lens or a lidar transmitter lens. In this case, light from the image source surface sequentially passes through each surface S18 to S1 and is finally projected onto a projection surface (not shown) disposed on the first side, wherein an image sensor chip IMA is disposed on the image source surface.

[0248] Table 17 shows the radius of curvature R, thickness / distance d, refractive index Nd, and Abbe number Vd of each lens in the optical lens of Example 9. Table 18 shows the conic coefficients and higher-order coefficients that can be used for each aspherical mirror in Example 9, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0249]

[0250] Table 17

[0251] Face number k A4 A6 A8 A10 A12 A14 A16 S15 -89.1000 -5.0294E-04 -3.2657E-05 1.2181E-06 -7.5374E-08 1.5144E-09 -2.2905E-11 7.7057E-14 S16 -31.9500 -6.6169E-04 -2.4140E-05 2.1485E-06 -1.6073E-07 6.1504E-09 -1.0947E-10 8.8528E-13

[0252] Table 18

[0253] Example 10

[0254] The following is for reference Figure 10 An optical lens according to Embodiment 10 of this application is described. Figure 10 A schematic diagram of the structure of an optical lens according to Embodiment 10 of this application is shown.

[0255] like Figure 10 As shown, the optical lens includes, in sequence from the first side to the second side, 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, and an eighth lens L8.

[0256] The first lens L1 is a convex-concave lens with negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 is a convex-concave lens with negative optical power, its first side surface S3 is convex, and its second side surface S4 is concave. The third lens L3 is a concave-convex lens with negative optical power, its first side surface S5 is concave, and its second side surface S6 is convex. The fourth lens L4 is a convex-concave lens with positive optical power, its first side surface S7 is convex, and its second side surface S8 is concave. The fifth lens L5 is a convex-convex lens with positive optical power, its first side surface S9 is convex, and its second side surface S10 is convex. The sixth lens L6 is a convex-convex lens with positive optical power, its first side surface S12 is convex, and its second side surface S13 is convex. The seventh lens L7 is a concave-concave lens with negative optical power, its first side surface S13 is concave, and its second side surface S14 is concave. The eighth lens L8 is a convex-convex lens with positive optical power. Its first side surface S15 is convex, and its second side surface S16 is convex. The sixth lens L6 and the seventh lens L7 can be cemented together to form a cemented lens. The first side surface S15 of the eighth lens L8 has a recurve shape.

[0257] The optical lens may also include an aperture stop STO, which may be positioned between the fifth lens L5 and the sixth lens L6 to improve image quality. For example, the aperture stop STO may be positioned at the midpoint between the fifth lens L5 and the sixth lens L6.

[0258] Optionally, the optical lens may also include a filter L9 having a first side surface S17 and a second side surface S18 and / or a protective glass (not shown) having a first side surface and a second side surface. The filter L8 and / or the protective glass can be used to correct color deviation, and the filter L9 and / or the protective glass can also be used to protect the image sensor chip (IMA) located at the imaging surface. Light from the object passes sequentially through each surface S1 to S18 and is finally imaged on the imaging surface.

[0259] The optical lens provided in this application can be used, for example, as a vehicle-mounted lens. In this case, light from the object sequentially passes through each surface S1 to S18 and is finally imaged onto an imaging surface disposed on the second side, wherein an image sensor chip IMA is disposed on the imaging surface. It should be understood that the optical lens provided in this application can also be used, for example, as a projection lens or a lidar transmitter lens. In this case, light from the image source surface sequentially passes through each surface S18 to S1 and is finally projected onto a projection surface (not shown) disposed on the first side, wherein an image sensor chip IMA is disposed on the image source surface.

[0260] Table 19 shows the radius of curvature R, thickness / distance d, refractive index Nd, and Abbe number Vd of each lens in the optical lens of Example 10. Table 20 shows the conic coefficients and higher-order coefficients that can be used for each aspherical mirror in Example 10, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0261]

[0262] Table 19

[0263] Face number k A4 A6 A8 A10 A12 A14 A16 S15 -89.1000 -5.5882E-04 -3.2657E-05 1.3534E-06 -8.3748E-08 2.3370E-09 -2.5450E-11 9.5132E-14 S16 -39.4450 -6.6169E-04 -2.6822E-05 2.3872E-06 -1.6073E-07 6.1504E-09 -1.2163E-10 9.8364E-13

[0264] Table 20

[0265] In summary, Examples 1 to 10 respectively satisfy the relationships shown in Tables 21-1 and 21-2 below. In Tables 21-1 and 21-2, the units of F, ENPD, TTL, H, D, BFL, F1~F8, R9, R15, d12, d13, F67, d14, d15, and R13 are millimeters (mm), the unit of FOV is degrees (°), and the unit of θ is radians (rad). and The unit is the reciprocal of millimeters (mm^2). -1 ).

[0266]

[0267]

[0268] Table 21-1

[0269]

[0270]

[0271] Table 21-2

[0272] This application also provides an electronic device that may include an optical lens according to the above embodiments of this application and an imaging element for converting an optical image formed by the optical lens into an electrical signal. The electronic device may be a stand-alone electronic device, such as a rangefinder camera, or an imaging module integrated into a rangefinder device. Furthermore, the electronic device may also be a stand-alone imaging device, such as an in-vehicle camera, or an imaging module integrated into a driver assistance system, such as a vehicle-mounted camera.

[0273] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An optical lens, characterized in that, The optical lens comprises, sequentially from the first side to the second side along the optical axis: A first lens with negative optical power has a first side surface that is convex and a second side surface that is concave. A second lens with negative optical power has a first convex surface and a second concave surface; The third lens with negative optical power has a concave first side surface; A fourth lens with positive optical power; A fifth lens with positive optical power has a convex first side and a convex second side. The sixth lens with positive optical power has a convex first side and a convex second side. The seventh lens with negative optical power has a concave first side surface; An eighth lens with positive optical power, the first side of which is convex; and The maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy: 0.1≤D / H≤5; The image height H corresponding to the maximum field of view of the optical lens, the focal length F of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy: |(HF×θ) / (F×θ)|≤0.2; The optical lens has eight lenses with optical power. The focal length F8 of the eighth lens and the focal length F of the optical lens satisfy: 4.0016≤F8 / F≤30; The first side is the object side, and the second side is the image side; or, the first side is the imaging side, and the second side is the image source side.

2. The optical lens according to claim 1, wherein, The second side surface of the third lens is either concave or convex.

3. The optical lens according to claim 1, wherein, The first side surface of the fourth lens is convex, and the second side surface is convex; or The first side surface of the fourth lens is convex, and the second side surface is concave; or The first side of the fourth lens is concave, and the second side is convex.

4. The optical lens according to claim 1, wherein, The second side surface of the seventh lens is either concave or convex.

5. The optical lens according to claim 1, wherein, The second side surface of the eighth lens is either concave or convex.

6. The optical lens according to claim 1, wherein, The sixth lens and the seventh lens together form a cemented lens.

7. The optical lens according to claim 1, wherein, The optical lens also includes an aperture stop disposed between the fifth lens and the sixth lens.

8. The optical lens according to claim 1, wherein, The eighth lens is an aspherical lens, and at least one of its first and second side surfaces has inflection.

9. The optical lens according to any one of claims 1-8, wherein, The distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens on the optical axis, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view FOV of the optical lens satisfy: 7.8838≤TTL / H / FOV×180°≤90.

10. The optical lens according to any one of claims 1-8, wherein, The distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens on the optical axis, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy: 2.5094≤TTL / H / θ≤5.

11. The optical lens according to any one of claims 1-8, wherein, The distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens on the optical axis, the focal length F of the optical lens, and the maximum field of view FOV of the optical lens satisfy the following: 13.5232≤TTL / (F×FOV)×180°≤90.

12. The optical lens according to any one of claims 1-8, wherein, The distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens on the optical axis, the focal length F of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy: 4.3044≤TTL / (F×θ)≤8.

13. The optical lens according to any one of claims 1-8, wherein, The maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy: 0.9438≤D / H / θ≤2.

14. The optical lens according to any one of claims 1-8, wherein, The radius of curvature R9 of the first side of the fifth lens and the focal length F of the optical lens satisfy the following condition: 1.9579 ≥ R9 / F ≥ 0.

5.

15. The optical lens according to any one of claims 1-8, wherein, The focal length F of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: 0.1≤F / H≤1.

16. The optical lens according to any one of claims 1-8, wherein, The focal length F8 of the eighth lens and the focal length F of the optical lens satisfy the following condition: 4.0016≤F8 / F≤25.

17. The optical lens according to any one of claims 1-8, wherein, The focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy the following condition: 1.7697≤F / ENPD≤2.

18. The optical lens according to any one of claims 1-8, wherein, The center thickness d12 of the sixth lens, the center thickness d13 of the seventh lens, and the distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens on the optical axis satisfy the following: 0.01≤(d12+d13) / TTL≤0.

5.

19. The optical lens according to any one of claims 1-8, wherein, The radius of curvature R15 of the first side of the eighth lens and the focal length F of the optical lens satisfy: 1≤R15 / F≤8.

20. The optical lens according to any one of claims 1-8, wherein, The air gap d14 between the seventh lens and the eighth lens and the distance BFL from the center of the second side of the eighth lens to the center of the imaging plane of the optical lens satisfy the following: 1.5mm≤(d14×BFL) / (d14+BFL)≤2.4661mm.

21. The optical lens according to any one of claims 1-8, wherein, The optical power of the first lens 1 and the optical power of the optical lens Satisfy: -0.6≤ 1 / ≤-0.

09.

22. The optical lens according to any one of claims 1-8, wherein, The maximum field of view (FOV) of the optical lens and the image height (H) corresponding to the maximum field of view of the optical lens satisfy: 0.3° / mm 2 ≤FOV / 2 / (H / 2) ^2 ≤1.8632° / mm 2 .

23. The optical lens according to any one of claims 1-8, wherein, The distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens on the optical axis and the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens satisfy: 1.6≤TTL / D≤3.

5.

24. The optical lens according to any one of claims 1-8, wherein, The radius of curvature R15 of the first side surface of the eighth lens and the center thickness d15 of the eighth lens satisfy: 1≤R15 / d15≤20.

25. The optical lens according to any one of claims 1-8, wherein, The distance TTL from the center of the first side surface of the first lens to the imaging surface of the optical lens on the optical axis and the distance BFL from the center of the second side surface of the eighth lens to the center of the imaging surface of the optical lens satisfy: 9.7189≥TTL / BFL≥5.

5.

26. The optical lens according to claim 1, wherein, The optical lens satisfies at least one of the following conditions: 7.8838≤TTL / H / FOV×180°≤18, 2.5094≤TTL / H / θ≤3.5 13.5232≤TTL / (F×FOV)×180°≤36 4.3044≤TTL / (F×θ)≤6 0.3≤F / H≤0.7 |(HF×θ) / (F×θ)|≤0.17, 0.9438≤D / H / θ≤1.5 1.5≤R15 / F≤6, 1≤D / H≤3, 1.7697≤F / ENPD≤1.85 0.05≤(d12+d13) / TTL≤0.3, 1.4≤R9 / F≤1.9579, 6≤TTL / BFL≤9.7189 3≤R15 / d15≤15, 1.7mm≤(d14×BFL) / (d14+BFL)≤2.4661mm, -0.5≤ 1 / ≤-0.12， 1° / mm 2 ≤FOV / 2 / (H / 2) ^2 ≤1.8632° / mm 2 , 2≤TTL / D≤3, Wherein, TTL is the distance from the center of the first side surface of the first lens to the imaging plane of the optical lens on the optical axis, H is the image height corresponding to the maximum field of view of the optical lens, FOV is the maximum field of view of the optical lens, θ is the radian value corresponding to the maximum field of view of the optical lens, F is the focal length of the optical lens, R15 is the radius of curvature of the first side surface of the eighth lens, D is the maximum aperture of the first side surface of the first lens corresponding to the maximum field of view of the optical lens, ENPD is the entrance pupil diameter of the optical lens, d12 is the center thickness of the sixth lens, d13 is the center thickness of the seventh lens, R9 is the radius of curvature of the first side surface of the fifth lens, BFL is the distance from the center of the second side surface of the eighth lens to the center of the imaging plane of the optical lens, d15 is the center thickness of the eighth lens, and d14 is the air gap between the seventh and eighth lenses. 1 represents the optical power of the first lens. The optical power is the focal length of the optical lens.

27. The optical lens according to claim 1, wherein, The optical lens satisfies at least one of the following conditions: 7.8838≤TTL / H / FOV×180°≤8.0115, 2.5094≤TTL / H / θ≤2.5500 13.5232≤TTL / (F×FOV)×180°≤14.4179 4.3044≤TTL / (F×θ)≤4.5892 0.5477≤F / H≤0.5830 0.0049≤|(HF×θ) / (F×θ)|≤0.0696, 0.9438≤D / H / θ≤1.0346 2.0189≤R15 / F≤5.4790 1.6111≤D / H≤1.7660, 1.7697≤F / ENPD≤1.7703 0.0988≤(d12+d13) / TTL≤0.1457, 1.7479≤R9 / F≤1.9579 6.9807≤TTL / BFL≤9.7189 4.3482≤R15 / d15≤12.2205, 1.9521mm≤(d14×BFL) / (d14+BFL)≤2.4661mm, 4.0016≤F8 / F≤20.3150 -0.3310≤ 1 / ≤-0.1952， 1.8043° / mm 2 ≤FOV / 2 / (H / 2) ^2 ≤1.8632° / mm 2 , 2.4441≤TTL / D≤2.6739 Wherein, TTL is the distance from the center of the first side surface of the first lens to the imaging plane of the optical lens on the optical axis, H is the image height corresponding to the maximum field of view of the optical lens, FOV is the maximum field of view of the optical lens, θ is the radian value corresponding to the maximum field of view of the optical lens, F is the focal length of the optical lens, R15 is the radius of curvature of the first side surface of the eighth lens, D is the maximum aperture of the first side surface of the first lens corresponding to the maximum field of view of the optical lens, ENPD is the entrance pupil diameter of the optical lens, d12 is the center thickness of the sixth lens, d13 is the center thickness of the seventh lens, R9 is the radius of curvature of the first side surface of the fifth lens, BFL is the distance from the center of the second side surface of the eighth lens to the center of the imaging plane of the optical lens, d15 is the center thickness of the eighth lens, d14 is the air gap between the seventh and eighth lenses, and F8 is the focal length of the eighth lens. 1 represents the optical power of the first lens. The optical power is the focal length of the optical lens.

28. An electronic device, characterized in that, It includes an optical lens according to any one of claims 1-27 and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

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