Optical lens and electronic device

Abstract

This application discloses an optical lens and an electronic device including the 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, having a first convex surface and a second concave surface; a second lens with negative optical power, having a first convex surface and a second concave surface; a third lens with optical power, having a second convex surface; a fourth lens with optical power, having a first concave surface and a second convex surface; a fifth lens with optical power, having a first convex surface and a second concave surface; a sixth lens with positive optical power, having a second convex surface; a seventh lens with positive optical power, having a first convex surface and a second convex surface; an eighth lens with negative optical power, having a first concave surface; and a ninth lens with positive optical power, having a first 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, autonomous driving assistance systems have developed rapidly, constantly placing higher demands on automotive cameras. As a key component for autonomous driving assistance systems to acquire external information, automotive cameras are developing towards higher resolution and wider field of view.

[0003] Due to the complexity of real-world road conditions, vehicle-mounted lenses need to have a good ability to recognize objects of different colors. To adapt to a wider range of application scenarios, advanced driver assistance systems (ADAS) are placing higher demands on the chromatic aberration performance of vehicle-mounted lenses, making day-and-night cofocus lenses an increasingly urgent need.

[0004] Beyond meeting the imaging requirements of automotive lenses, there's also a desire for increasingly smaller overall lens sizes. Smaller lenses facilitate installation without compromising the overall interior aesthetics of the car. However, miniaturized lenses typically suffer from reduced performance across the board.

[0005] Furthermore, automotive lenses are typically used in environments with significant temperature differences, such as high temperatures in summer and low temperatures in winter. Under these conditions, ordinary lenses will experience image plane shift, resulting in blurred images and affecting normal use. To ensure that automotive lenses can produce clear images under both high and low temperature operating conditions, we need to suppress the shift in the lens's optical back focus due to temperature changes.

[0006] Therefore, high resolution, wide field of view, good temperature performance, and miniaturization are the future development trends of automotive lenses. Summary of the Invention

[0007] 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 optical power, wherein the second side is convex; a fourth lens having optical power, wherein the first side is concave and the second side is convex; a fifth lens having optical power, wherein the first side is convex and the second side is concave; a sixth lens having positive optical power, wherein the second side is convex; a seventh lens having positive optical power, wherein the first side is convex and the second side is convex; an eighth lens having negative optical power, wherein the first side is concave; and a ninth lens having positive optical power, wherein the first side is convex.

[0008] In one embodiment, the third lens has positive optical power and its first side surface is convex.

[0009] In one embodiment, the third lens has negative optical power and its first side surface is concave.

[0010] In one embodiment, the fourth lens has negative optical power.

[0011] In one embodiment, the fourth lens has positive optical power.

[0012] In one embodiment, the fifth lens has negative optical power.

[0013] In one embodiment, the fifth lens has positive optical power.

[0014] In one embodiment, the first side surface of the sixth lens is convex.

[0015] In one embodiment, the first side surface of the sixth lens is concave.

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

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

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

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

[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°≤18.

[0021] 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 of the maximum field of view of the optical lens satisfy: |(HF×θ) / (F×θ)|≤0.5.

[0022] 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 of the maximum field of view of the optical lens satisfy: |(H / 2) / (F×tan(θ / 2))|≤1.5.

[0023] In one embodiment, the distance BFL from the center of the second side of the ninth lens to the imaging surface of the optical lens on the optical axis 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: BFL / TTL≥0.01.

[0024] In one embodiment, the maximum field of view (FOV) of the optical lens, 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: (FOV×F) / H≥45.

[0025] In one embodiment, the focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy: F / ENPD≤2.5.

[0026] In one embodiment, the focal length F of the optical lens, the radius of curvature R2F of the first side surface of the second lens, and the radius of curvature R2B of the second side surface of the second lens satisfy: |F / R2F|+|F / R2B|≤1.5.

[0027] In one embodiment, the focal length F2 of the second lens and the radius of curvature R2B of the second side surface of the second lens satisfy: -5≤F2 / R2B≤-0.5.

[0028] In one embodiment, the focal length F3 of the third lens and the focal length F4 of the fourth lens satisfy: 0.1≤|F3 / F4|≤1.8.

[0029] In one embodiment, the first cemented lens composed of the third lens and the fourth lens has a first cemented surface, and the central radius of curvature Rj1 of the first cemented surface and the effective aperture Φj1 of the first cemented surface satisfy: 0.5≤|Rj1| / (Φj1 / 2)≤5.

[0030] In one embodiment, the focal length F6 of the sixth lens and the focal length F7 of the seventh lens satisfy: F6 / F7≥1.

[0031] In one embodiment, the focal length F7 of the seventh lens and the focal length F8 of the eighth lens satisfy: 0.5≤|F7 / F8|≤2.

[0032] In one embodiment, the focal length F78 of the second cemented lens composed of the seventh lens and the eighth lens satisfies the same condition as the focal length F of the optical lens: |F78 / F| ≥ 5.

[0033] In one embodiment, the focal length F7 of the seventh lens, the focal length F8 of the eighth lens, and the focal length F of the optical lens satisfy: -30≤F7×F8 / F≤-2.

[0034] In one embodiment, the focal length F9 of the ninth lens and the focal length F of the optical lens satisfy: F9 / F≥2.

[0035] In one embodiment, the second cemented lens composed of the seventh lens and the eighth lens has a second cemented surface, and the central radius of curvature Rj2 of the second cemented surface and the effective aperture Φj2 of the second cemented surface satisfy: |Rj2| / (Φj2 / 2)≥1.

[0036] In one embodiment, the radius of curvature R8F of the first side surface of the eighth lens, the radius of curvature R9F of the first side surface of the ninth lens, and the center thickness d8 of the eighth lens satisfy: R8F / (R9F+d8)≤-0.02.

[0037] 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 satisfies the following condition: TTL / (H / 2)≥9.02.

[0038] In one embodiment, the radius of curvature R3F of the first side surface of the third lens and the radius of curvature R3B of the second side surface of the third lens satisfy: |R3F / R3B|≥0.72.

[0039] In one embodiment, the radius of curvature R9F of the first side surface of the ninth lens and the radius of curvature R9B of the second side surface of the ninth lens satisfy: R9F / (R9F-R9B)≤0.95.

[0040] In one embodiment, the radius of curvature R3F of the first side surface of the third lens and the radius of curvature R4F of the first side surface of the fourth lens satisfy: (R3F-R4F) / (R3F+R4F)≥-0.8.

[0041] This application also provides an optical lens. The optical lens, along the 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 optical power; a fourth lens with optical power; a fifth lens with optical power; a sixth lens with positive optical power; a seventh lens with positive optical power; an eighth lens with negative optical power; and a ninth lens with positive optical power; wherein 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 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°≤18.

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

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

[0044] In one embodiment, the third lens has positive optical power, and its first side surface is convex, and its second side surface is convex.

[0045] In one embodiment, the third lens has negative optical power, with its first side surface being concave and its second side surface being convex.

[0046] In one embodiment, the fourth lens has negative optical power, with its first side surface being concave and its second side surface being convex.

[0047] In one embodiment, the fourth lens has positive optical power, with its first side surface being concave and its second side surface being convex.

[0048] In one embodiment, the fifth lens has negative optical power, with its first side surface being convex and its second side surface being concave.

[0049] In one embodiment, the fifth lens has positive optical power, with its first side surface being convex and its second side surface being concave.

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

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

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

[0053] In one embodiment, the first side surface of the eighth lens is concave, and the second side surface is concave.

[0054] In one embodiment, the first side surface of the eighth lens is concave, and the second side surface is convex.

[0055] In one embodiment, the first side surface of the ninth lens is convex, and the second side surface is concave.

[0056] In one embodiment, the first side surface of the ninth lens is convex, and the second side surface is convex.

[0057] 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 of the maximum field of view of the optical lens satisfy: |(HF×θ) / (F×θ)|≤0.5.

[0058] 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 of the maximum field of view of the optical lens satisfy: |(H / 2) / (F×tan(θ / 2))|≤1.5.

[0059] In one embodiment, the distance BFL from the center of the second side of the ninth lens to the imaging surface of the optical lens on the optical axis 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: BFL / TTL≥0.01.

[0060] In one embodiment, the maximum field of view (FOV) of the optical lens, 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: (FOV×F) / H≥45.

[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≤2.5.

[0062] In one embodiment, the focal length F of the optical lens, the radius of curvature R2F of the first side surface of the second lens, and the radius of curvature R2B of the second side surface of the second lens satisfy: |F / R2F|+|F / R2B|≤1.5.

[0063] In one embodiment, the focal length F2 of the second lens and the radius of curvature R2B of the second side surface of the second lens satisfy: -5≤F2 / R2B≤-0.5.

[0064] In one embodiment, the focal length F3 of the third lens and the focal length F4 of the fourth lens satisfy: 0.1≤|F3 / F4|≤1.8.

[0065] In one embodiment, the first cemented lens composed of the third lens and the fourth lens has a first cemented surface, and the central radius of curvature Rj1 of the first cemented surface and the effective aperture Φj1 of the first cemented surface satisfy: 0.5≤|Rj1| / (Φj1 / 2)≤5.

[0066] In one embodiment, the focal length F6 of the sixth lens and the focal length F7 of the seventh lens satisfy: F6 / F7≥1.

[0067] In one embodiment, the focal length F7 of the seventh lens and the focal length F8 of the eighth lens satisfy: 0.5≤|F7 / F8|≤2.

[0068] In one embodiment, the focal length F78 of the second cemented lens composed of the seventh lens and the eighth lens satisfies the same condition as the focal length F of the optical lens: |F78 / F| ≥ 5.

[0069] In one embodiment, the focal length F7 of the seventh lens, the focal length F8 of the eighth lens, and the focal length F of the optical lens satisfy: -30≤F7×F8 / F≤-2.

[0070] In one embodiment, the focal length F9 of the ninth lens and the focal length F of the optical lens satisfy: F9 / F≥2.

[0071] In one embodiment, the second cemented lens composed of the seventh lens and the eighth lens has a second cemented surface, and the central radius of curvature Rj2 of the second cemented surface and the effective aperture Φj2 of the second cemented surface satisfy: |Rj2| / (Φj2 / 2)≥1.

[0072] In one embodiment, the radius of curvature R8F of the first side surface of the eighth lens, the radius of curvature R9F of the first side surface of the ninth lens, and the center thickness d8 of the eighth lens satisfy: R8F / (R9F+d8)≤-0.02.

[0073] 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 satisfies the following condition: TTL / (H / 2)≥9.02.

[0074] In one embodiment, the radius of curvature R3F of the first side surface of the third lens and the radius of curvature R3B of the second side surface of the third lens satisfy: |R3F / R3B|≥0.72.

[0075] In one embodiment, the radius of curvature R9F of the first side surface of the ninth lens and the radius of curvature R9B of the second side surface of the ninth lens satisfy: R9F / (R9F-R9B)≤0.95.

[0076] In one embodiment, the radius of curvature R3F of the first side surface of the third lens and the radius of curvature R4F of the first side surface of the fourth lens satisfy: (R3F-R4F) / (R3F+R4F)≥-0.8.

[0077] 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.

[0078] This application employs nine lenses. By optimizing the shape and optical power of each lens, the optical lens achieves at least one beneficial effect, such as miniaturization, high resolution, wide field of view, long rear focal length, easy installation, day and night confocal focus, and good temperature performance. Attached Figure Description

[0079] 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:

[0080] Figure 1 This is a schematic diagram illustrating the structure of an optical lens according to Embodiment 1 of this application;

[0081] Figure 2 To illustrate the structure of the optical lens according to Embodiment 2 of this application;

[0082] Figure 3 To illustrate the structure of the optical lens according to Embodiment 3 of this application;

[0083] Figure 4 This is a schematic diagram illustrating the structure of the optical lens according to Embodiment 4 of this application;

[0084] Figure 5 This is a schematic diagram illustrating the structure of the optical lens according to Embodiment 5 of this application;

[0085] Figure 6 To illustrate the structure of the optical lens according to Embodiment 6 of this application;

[0086] Figure 7 To illustrate the structural schematic diagram of the optical lens according to Embodiment 7 of this application; and

[0087] Figure 8 This is a schematic diagram illustrating the structure of an optical lens according to Embodiment 8 of this application. Detailed Implementation

[0088] 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.

[0089] 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.

[0090] 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.

[0091] 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.

[0092] 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.

[0093] 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.

[0094] 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.

[0095] The features, principles and other aspects of this application are described in detail below.

[0096] In an exemplary embodiment, the optical lens includes, for example, nine lenses with optical power, namely a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, and a ninth lens. These nine lenses are arranged sequentially along the optical axis from the first side to the second side.

[0097] 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.

[0098] 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.

[0099] 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).

[0100] 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 diverges light rays passing through it. Under the same field of view, light rays exiting from the second side of the first lens allow the subsequent optical system to have a larger light-receiving surface. The convex design of the first side of the first lens facilitates the collection of large-field-of-view light rays into the subsequent optical system and, in practical environments such as rain or snow, helps water droplets slide off, reducing their impact on imaging. The concave design of the second side of the first lens facilitates the rapid divergence of large-angle light rays passing through the first side, which is beneficial for the subsequent optical system to correct aberrations in large-angle light rays and achieve high resolution. The first lens is preferably made of a high-refractive-index lens material, which helps reduce the front aperture and improve image quality.

[0101] In an exemplary embodiment, the second lens has negative optical power, with a convex first side and a concave second side. The second lens is designed in a meniscus shape convex towards the first side, which is beneficial for collecting light from the first lens. The combination of the second and first lenses—that is, two meniscus lenses with negative optical power in the same direction—results in a smoother outgoing light, which is beneficial for achieving low distortion. The convex first side of the first lens helps to minimize the angle of incidence of light rays incident on the first side of the second lens, thus allowing light to reach the rear optical lens smoothly and contributing to a wide field of view.

[0102] In an exemplary embodiment, the third lens has positive optical power, and its first side surface is convex, as are its second side surface. The positive optical power of the third lens facilitates light convergence, and by controlling the focal length of the third lens, system aberrations can be effectively corrected, image quality improved, and optical performance such as distortion and CRA optimized.

[0103] In an exemplary embodiment, the third lens has negative optical power, with its first side being concave and its second side being convex. The negative optical power of the third lens is beneficial for diverging light, and by controlling the focal length of the third lens, system aberrations can be effectively corrected, image quality improved, and optical performance such as distortion and CRA optimized.

[0104] In an exemplary embodiment, the fourth lens has negative optical power, with its first side being concave and its second side being convex. The fourth lens, having negative optical power, diverges light rays; therefore, appropriately setting the optical power of the fourth lens can reduce aberrations and improve image quality.

[0105] In an exemplary embodiment, the fourth lens has positive optical power, with its first side surface being concave and its second side surface being convex. The fourth lens, having positive optical power, has a converging effect on light rays; appropriately setting the optical power of the fourth lens can reduce aberrations and improve image quality.

[0106] In an exemplary embodiment, the fifth lens has negative optical power, a convex first side, and a concave second side. The negative optical power of the fifth lens diverges light, allowing subsequent optical lenses to have a larger light-receiving surface. Properly allocating the optical power of the fifth lens helps reduce aberrations and improve optical performance.

[0107] In an exemplary embodiment, the fifth lens has positive optical power, a convex first side, and a concave second side. The fifth lens has a positive optical focal length and a meniscus shape convex towards the first side, which facilitates the collection of light from the fourth lens, allowing the light path to smoothly transition to the rear lens, reducing the height of the light incident on the rear lens, and thus reducing the aperture of the rear lens.

[0108] In an exemplary embodiment, the sixth lens has positive optical power, and its first side surface is convex, as are its second side surface. The positive optical power of the sixth lens facilitates light convergence, and the convexity of both sides helps to compress the angle of the incident light, thereby reducing the aperture of the rear lens. The sixth lens can be made of a material with thermal compensation properties, giving the optical lens better thermal stability.

[0109] In an exemplary embodiment, the sixth lens has positive optical power, with a concave first side and a convex second side. This optical power and surface configuration of the sixth lens helps to compress the angle of incident light, reducing the aperture of the rear lens. The sixth lens can use a material with thermal compensation properties, giving the optical lens better thermal stability.

[0110] In an exemplary embodiment, the seventh lens has positive optical power, with its first side surface being convex and its second side surface being convex. The positive optical power of the seventh lens facilitates light convergence, and by controlling the focal length of the seventh lens, system aberrations can be effectively corrected, image quality improved, and optical performance such as distortion and CRA optimized.

[0111] In an exemplary embodiment, the eighth lens has a negative optical power, and its first side surface is concave, as are its second side surface. Since the eighth lens has a negative optical power, it has a diverging effect on light. Properly setting the optical power of the eighth lens can reduce aberrations and improve image quality.

[0112] In an exemplary embodiment, the eighth lens has a negative optical power, with its first side surface being concave and its second side surface being convex. Since the eighth lens has a negative optical power, it has a diverging effect on light. Properly setting the optical power of the eighth lens can reduce aberrations and improve image quality.

[0113] In an exemplary embodiment, the ninth 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 ninth lens facilitates light convergence, and its meniscus shape concave towards the second side surface helps correct optical lens aberrations and increase CRA (Corrective Aberration Reduction).

[0114] In an exemplary embodiment, the ninth lens has positive optical power, and its first side surface is convex, as are its second side surface. The positive optical power of the ninth lens facilitates light convergence, and its biconvex shape allows diverging light rays to smoothly enter the rear lens, correcting system aberrations. Simultaneously, the ninth lens can reduce the height at which light rays enter the subsequent lens, decreasing the rear aperture.

[0115] In an exemplary embodiment, an aperture stop may be provided between the fifth lens and the sixth lens 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 lens, shorten the overall length of the optical lens, reduce the aperture of the front lens, and decrease the assembly sensitivity of the optical lens. In this embodiment, the aperture stop may be located near the second side of the fifth lens, or near the first side of the sixth lens. 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 located at other positions as needed.

[0116] In an exemplary embodiment, the optical lens according to this application satisfies: TTL / H / FOV×180°≤18, 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 FOV is the maximum field of view of the optical lens. More specifically, TTL, H, and FOV can further satisfy: TTL / H / FOV×180°≤9. Satisfying TTL / H / FOV×180°≤18 is beneficial for effectively limiting the length of the optical lens under the same imaging surface and the same image height, which is beneficial for achieving miniaturization of the optical lens.

[0117] In an exemplary embodiment, the optical lens according to this application satisfies: |(HF×θ) / (F×θ)|≤0.5, 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 of the maximum field of view of the optical lens. More specifically, H, F, and θ further satisfy: |(HF×θ) / (F×θ)|≤0.3. Satisfying |(HF×θ) / (F×θ)|≤0.5 is beneficial for ensuring that the focal length of the optical lens is reduced while keeping the lens field of view and image plane size unchanged, thus enabling the optical lens to have small distortion.

[0118] In an exemplary embodiment, the optical lens according to this application satisfies: |(H / 2) / (F×tan(θ / 2))|≤1.5, 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 of the maximum field of view of the optical lens. More specifically, H, F, and θ further satisfy: |(H / 2) / (F×tan(θ / 2))|≤1.2. Satisfying |(H / 2) / (F×tan(θ / 2))|≤1.5 is beneficial for increasing the focal length of the optical lens and increasing the angular resolution of the central region of the imaging plane of the optical lens while keeping the lens field of view and imaging plane size unchanged.

[0119] In an exemplary embodiment, the optical lens according to this application can satisfy: BFL / TTL ≥ 0.01, where BFL is the distance on the optical axis from the center of the second side surface of the ninth lens to the imaging plane of the optical lens, and 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. More specifically, BFL and TTL can further satisfy: BFL / TTL ≥ 0.03. Satisfying BFL / TTL ≥ 0.01 is beneficial for meeting the special requirements of the back focal length of the optical lens, and also helps to reserve space for the installation and focusing of optical components, avoiding interference when assembling the optical lens and optical components.

[0120] In an exemplary embodiment, the optical lens according to this application satisfies: (FOV×F) / H≥45, where FOV is the maximum field of view of the optical lens, 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, FOV, F, and H can further satisfy: (FOV×F) / H≥48. Satisfying (FOV×F) / H≥45 is beneficial for the optical lens to simultaneously meet the requirements of telephoto and a large field of view.

[0121] In an exemplary embodiment, the optical lens according to this application satisfies: F / ENPD ≤ 2.5, 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 ≤ 2.3. Satisfying F / ENPD ≤ 2.5 is beneficial for the optical lens to meet a small FNO and also for increasing light throughput.

[0122] In an exemplary embodiment, the optical lens according to this application satisfies: |F / R2F|+|F / R2B|≤1.5, where F is the focal length of the optical lens, R2F is the radius of curvature of the first side surface of the second lens, and R2B is the radius of curvature of the second side surface of the second lens. More specifically, F, R2F, and R2B further satisfy: |F / R2F|+|F / R2B|≤1.0. Satisfying |F / R2F|+|F / R2B|≤1.5 helps to smooth the light rays emitted through the second lens and smoothly enter the rear optical system, and effectively corrects astigmatism to improve image quality.

[0123] In an exemplary embodiment, the optical lens according to this application satisfies: -5≤F2 / R2B≤-0.5, where F2 is the focal length of the second lens and R2B is the radius of curvature of the second side surface of the second lens. More specifically, F2 and R2B further satisfy: -3.5≤F2 / R2B≤-1. Satisfying -5≤F2 / R2B≤-0.5, and with the second side surface of the second lens being concave, the second lens has a negative optical power, which is beneficial for collecting the light entering through the first lens and avoiding excessive divergence of the light from the first side surface of the second lens, thus facilitating control of the aperture of the rear lens. Both the second lens and the first lens have negative optical power and a convex-concave shape; that is, the combination of two meniscus lenses with negative optical power in the same direction can make the outgoing light relatively smooth, which is beneficial for achieving small distortion.

[0124] In an exemplary embodiment, the optical lens according to this application satisfies: 0.1 ≤ |F3 / F4| ≤ 1.8, where F3 is the focal length of the third lens and F4 is the focal length of the fourth lens. More specifically, F3 and F4 further satisfy: 0.2 ≤ |F3 / F4| ≤ 1.6. Satisfying 0.1 ≤ |F3 / F4| ≤ 1.8, that is, the adjacent third and fourth lenses have similar focal lengths, which helps to smooth the light transition and is beneficial to improving image quality.

[0125] In an exemplary embodiment, the optical lens according to this application satisfies: 0.5 ≤ |Rj1| / (Φj1 / 2) ≤ 5, wherein the first cemented lens composed of the third lens and the fourth lens has a first cemented surface, Rj1 is the central radius of curvature of the first cemented surface, and Φj1 is the effective aperture of the first cemented surface. More specifically, Rj1 and Φj1 further satisfy: 0.8 ≤ |Rj1| / (Φj1 / 2) ≤ 4. Satisfying 0.5 ≤ |Rj1| / (Φj1 / 2) ≤ 5 is beneficial for controlling the generation of advanced aberrations, thereby improving the light transmission and resolving power of the entire optical lens, and effectively reducing the cementing process requirements of the first cemented surface. In the example, the second side surface of the third lens and the first side surface of the fourth lens are cemented together to form the first cemented lens, and the first cemented surface can be either the second side surface of the third lens or the first side surface of the fourth lens.

[0126] In an exemplary embodiment, the optical lens according to this application satisfies the following condition: F6 / F7≥1, where F6 is the focal length of the sixth lens and F7 is the focal length of the seventh lens. More specifically, F6 and F7 can further satisfy: F6 / F7≥1.5. By satisfying F6 / F7≥1, and by reasonably setting the focal lengths of the sixth and seventh lenses, and by reasonably selecting and matching the materials of the sixth and seventh lenses, the back focal shift of the optical lens under high and low temperatures is well controlled.

[0127] In an exemplary embodiment, the optical lens according to this application satisfies: 0.5 ≤ |F7 / F8| ≤ 2, where F7 is the focal length of the seventh lens and F8 is the focal length of the eighth lens. More specifically, F7 and F8 further satisfy: 0.8 ≤ |F7 / F8| ≤ 1.85. Satisfying 0.5 ≤ |F7 / F8| ≤ 2, that is, the focal lengths of the seventh and eighth lenses are similar, is beneficial for the second cemented lens composed of the seventh and eighth lenses to correct chromatic aberration and improve image quality.

[0128] In an exemplary embodiment, the optical lens according to this application satisfies: |F78 / F| ≥ 5, where F78 is the focal length of the second cemented lens composed of the seventh and eighth lenses, and F is the focal length of the optical lens. More specifically, F78 and F may further satisfy: |F78 / F| ≥ 5.5. Satisfying |F78 / F| ≥ 5 is beneficial for the second cemented lens composed of the seventh and eighth lenses to correct chromatic aberration and improve image quality.

[0129] In an exemplary embodiment, the optical lens according to this application satisfies: -30 ≤ F7 × F8 / F ≤ -2, where F7 is the focal length of the seventh lens, F8 is the focal length of the eighth lens, and F is the focal length of the optical lens. More specifically, F7, F8, and F may further satisfy: -20 ≤ F7 × F8 / F ≤ -3. Satisfying -30 ≤ F7 × F8 / F ≤ -2 is beneficial for correcting chromatic aberration in the optical lens and improving image resolution.

[0130] In an exemplary embodiment, the optical lens according to this application satisfies: F9 / F≥2, where F9 is the focal length of the ninth lens and F is the focal length of the optical lens. More specifically, F9 and F may further satisfy: F9 / F≥3. Satisfying F9 / F≥2 is beneficial for controlling the focal length of the ninth lens, and the ninth lens is preferably a molded glass lens, which helps to correct aberrations in the optical lens and improve image quality.

[0131] In an exemplary embodiment, the optical lens according to this application satisfies: |Rj2| / (Φj2 / 2)≥1, where the second cemented lens composed of the seventh lens and the eighth lens has a second cemented surface, Rj2 is the central radius of curvature of the second cemented surface, and Φj2 is the effective aperture of the second cemented surface. More specifically, Rj2 and Φj2 further satisfy: |Rj2| / (Φj2 / 2)≥1.2. Satisfying |Rj2| / (Φj2 / 2)≥1 is beneficial for effectively controlling the generation of advanced aberrations, thereby improving the light transmission and resolving power of the entire optical lens and effectively reducing the cementing process requirements of the cemented surface. In the example, the second side surface of the seventh lens and the first side surface of the eighth lens are cemented together to form the second cemented lens, and the second cemented surface can be either the second side surface of the seventh lens or the first side surface of the eighth lens.

[0132] In an exemplary embodiment, the optical lens according to this application satisfies: R8F / (R9F+d8)≤-0.02, where R8F is the radius of curvature of the first side surface of the eighth lens, R9F is the radius of curvature of the first side surface of the ninth lens, and d8 is the center thickness of the eighth lens. More specifically, R8F, R9F, and d8 may further satisfy: R8F / (R9F+d8)≤-0.05. Satisfying R8F / (R9F+d8)≤-0.02 is beneficial for ensuring an optical path difference between the peripheral rays and the central rays, allowing the light to diverge and enter the rear optical system.

[0133] In an exemplary embodiment, the optical lens according to this application satisfies: TTL / (H / 2)≥9.02, 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 H is the image height corresponding to the maximum field of view of the optical lens. More specifically, TTL and H further satisfy: TTL / (H / 2)≥9.06. Satisfying TTL / (H / 2)≥9.02 reduces the optical power allocated to each lens, which is beneficial for correcting aberrations in the optical lens, thereby improving resolution.

[0134] In an exemplary embodiment, the optical lens according to this application satisfies: |R3F / R3B|≥0.72, where R3F is the radius of curvature of the first side surface of the third lens, and R3B is the radius of curvature of the second side surface of the third lens. More specifically, R3F and R3B further satisfy: |R3F / R3B|≥0.73. Satisfying |R3F / R3B|≥0.72 helps the third lens collect more light, increasing the light transmission capability of the optical lens.

[0135] In an exemplary embodiment, the optical lens according to this application satisfies: R9F / (R9F-R9B)≤0.95, where R9F is the radius of curvature of the first side surface of the ninth lens, and R9B is the radius of curvature of the second side surface of the ninth lens. More specifically, R9F and R9B may further satisfy: R9F / (R9F-R9B)≤0.92. Satisfying R9F / (R9F-R9B)≤0.95 is beneficial for correcting aberrations in the optical lens and improving image quality.

[0136] In an exemplary embodiment, the optical lens according to this application satisfies: (R3F-R4F) / (R3F+R4F)≥-0.8, where R3F is the radius of curvature of the first side surface of the third lens, and R4F is the radius of curvature of the first side surface of the fourth lens. More specifically, R3F and R4F further satisfy: (R3F-R4F) / (R3F+R4F)≥-0.5. Satisfying (R3F-R4F) / (R3F+R4F)≥-0.8 is beneficial for correcting aberrations in the optical lens and reducing the tolerance sensitivity of the optical lens.

[0137] In an exemplary embodiment, the optical lens of this application may, as needed, include a filter and / or protective glass disposed between the ninth 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.

[0138] In an exemplary embodiment, the first to ninth 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 paramount, the number of aspherical lenses can be increased, and even all lenses can be aspherical. Specifically, to correct aberrations in the optical lens, improve its resolving quality, and enable it to meet confocal performance requirements in both infrared and visible light, the fifth, sixth, and ninth lenses can be aspherical lenses. 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 and astigmatism. Using aspherical lenses can minimize aberrations that occur during imaging, thereby improving the lens's image quality. The use of aspherical lenses helps correct system aberrations and improves resolving power.

[0139] 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 ninth lenses can all be glass lenses. Of course, in applications with lower temperature stability requirements, the first to ninth lenses in an optical lens can also be made entirely of plastic. Using plastic to make optical lenses effectively reduces manufacturing costs. Alternatively, the first to ninth lenses in an optical lens can also be made from a combination of plastic and glass.

[0140] In an exemplary embodiment, the third and fourth lenses of the optical lens form a first cemented lens, and the seventh and eighth lenses form a second cemented lens. Cemented lenses effectively eliminate the influence of ghosting on the optical lens, ensuring high resolution while eliminating ghosting. Cemented lenses allow for sufficient correction of various aberrations in the optical lens, improving resolution, optimizing distortion, and enhancing CRA (Corrective Aberration Reduction) optical performance while maintaining a compact structure. When a cemented lens is a negative lens, it has a higher refractive index (relative to a positive lens), allowing light to converge effectively and smoothly at the final point, ensuring a stable arrival at the imaging plane and reducing overall weight and cost. Cemented lenses also reduce light loss caused by reflections between lenses. The combination of high and low refractive indices facilitates rapid transition of light from the front, increases the aperture, and enhances light transmission, which is beneficial for night vision requirements. Furthermore, using cemented lenses reduces the air gap between the two lenses, resulting in a more compact overall structure and reducing tolerance sensitivity issues such as overall eccentricity of the lens units during assembly.

[0141] The optical lens according to the above embodiments of this application achieves at least one beneficial effect, such as miniaturization, low distortion, long back focal length, large field of view, high light transmission, high resolution, good temperature performance, day and night confocality, and low sensitivity, by reasonably setting the shape and power of each lens, using only 9 lenses.

[0142] 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 nine lenses are described as an example in the embodiments, the optical lens is not limited to including nine 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.

[0143] Example 1

[0144] 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.

[0145] 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, an eighth lens L8, and a ninth lens L9.

[0146] 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 convex-convex lens with positive optical power, its first side surface S5 is convex, and its second side surface S6 is convex. The fourth lens L4 is a concave-convex lens with negative optical power, its first side surface S6 is concave, and its second side surface S7 is convex. The fifth lens L5 is a convex-concave lens with negative optical power, its first side surface S8 is convex, and its second side surface S9 is concave. The sixth lens L6 is a convex-convex lens with positive optical power, its first side surface S11 is convex, and its second side surface S12 is convex. The seventh lens L7 is a convex-convex lens with positive optical power, its first side surface S13 is convex, and its second side surface S14 is convex. The eighth lens, L8, is a concave-concave lens with negative optical power; its first side surface S14 is concave, and its second side surface S15 is concave. The ninth lens, L9, is a convex-concave lens with positive optical power; its first side surface S16 is convex, and its second side surface S17 is concave. The third lens, L3, and the fourth lens, L4, can be cemented together to form a cemented lens. The seventh lens, L7, and the eighth lens, L8, can be cemented together to form a cemented lens.

[0147] 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 S9 of the fifth lens L5.

[0148] Optionally, the optical lens may further include a filter L10 having a first side surface S18 and a second side surface S19 and / or a protective glass L11 having a first side surface S20 and a second side surface S21. The filter L10 and / or the protective glass L11 can be used to correct color deviation, and the filter L10 and / or the protective glass L11 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 S21 and is finally imaged on the imaging surface.

[0149] 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 S21 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 S21 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.

[0150] 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.

[0151] Face number Radius of curvature R (mm) Thickness / Distance d (mm) Refractive index Nd Abbe number Vd S1 17.9973 1.8549 1.95 32.32 S2 6.5195 4.0823 S3 48.6713 1.0000 1.91 35.26 S4 5.1939 6.1621 S5 16.7754 4.0000 1.81 25.48 S6 -5.7375 1.1668 1.92 20.88 S7 -12.7652 1.7258 S8 10.9890 1.0000 1.74 49.34 S9 7.9211 0.3148 STO infinity 0.4035 S11 120.0000 3.3153 1.50 81.59 S12 -4.5871 0.1000 S13 5.9813 3.0608 1.64 60.21 S14 -4.3979 0.7500 1.85 23.79 S15 5.2606 0.3259 S16 6.0736 1.6473 1.50 81.59 S17 200.0000 0.1382 S18 infinity 0.5500 1.52 64.21 S19 infinity 1.5000 S20 infinity 0.5000 1.52 64.21 S21 infinity 0.2021 IMA infinity -

[0152] Table 1

[0153] In Embodiment 1, the first side surface S8 and the second side surface S9 of the fifth lens L5, the first side surface S11 and the second side surface S12 of the sixth lens L6, and the first side surface S16 and the second side surface S17 of the ninth lens L9 can all be aspherical surfaces. The surface shape x of each aspherical lens can be defined using, but is not limited to, the following aspherical formula:

[0154]

[0155] 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 each aspherical mirror S8, S9, S11, S12, S16 and S17 in Example 1.

[0156] Face number k A4 A6 A8 A10 A12 A14 A16 S8 -14.9239 2.3932E-04 -4.3396E-05 4.4757E-06 8.8780E-07 1.5549E-08 -2.7240E-08 2.1088E-09 S9 -9.2522 2.1077E-03 -1.6690E-04 7.3806E-05 -6.0973E-06 2.5433E-18 6.5149E-21 1.6633E-23 S11 -99.0000 -1.5877E-04 -1.6267E-04 1.2090E-05 1.4934E-06 -1.1977E-06 2.1939E-16 -1.9816E-23 S12 -0.8705 -1.1483E-03 -2.3880E-05 -4.0126E-05 5.2132E-06 -3.5056E-07 -2.1235E-15 -1.1606E-21 S16 0.6787 1.8200E-03 -1.5777E-04 -2.4605E-05 3.5354E-06 -2.5184E-07 -2.5890E-15 7.1221E-22 S17 99.0000 2.1654E-03 -1.9767E-04 1.5592E-05 -2.7349E-06 3.7814E-08 3.0552E-14 -8.2850E-23

[0157] Table 2

[0158] Example 2

[0159] 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.

[0160] 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, an eighth lens L8, and a ninth lens L9.

[0161] 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 convex-convex lens with positive optical power, its first side surface S5 is convex, and its second side surface S6 is convex. The fourth lens L4 is a concave-convex lens with negative optical power, its first side surface S6 is concave, and its second side surface S7 is convex. The fifth lens L5 is a convex-concave lens with negative optical power, its first side surface S8 is convex, and its second side surface S9 is concave. The sixth lens L6 is a convex-convex lens with positive optical power, its first side surface S11 is convex, and its second side surface S12 is convex. The seventh lens L7 is a convex-convex lens with positive optical power, its first side surface S13 is convex, and its second side surface S14 is convex. The eighth lens, L8, is a concave-concave lens with negative optical power; its first side surface S14 is concave, and its second side surface S15 is concave. The ninth lens, L9, is a convex-concave lens with positive optical power; its first side surface S16 is convex, and its second side surface S17 is concave. The third lens, L3, and the fourth lens, L4, can be cemented together to form a cemented lens. The seventh lens, L7, and the eighth lens, L8, can be cemented together to form a cemented lens.

[0162] 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 S9 of the fifth lens L5.

[0163] Optionally, the optical lens may further include a filter L10 having a first side surface S18 and a second side surface S19 and / or a protective glass L11 having a first side surface S20 and a second side surface S21. The filter L10 and / or the protective glass L11 can be used to correct color deviation, and the filter L10 and / or the protective glass L11 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 S21 and is finally imaged on the imaging surface.

[0164] 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 S21 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 S21 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.

[0165] 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.

[0166] Face number Radius of curvature R (mm) Thickness / Distance d (mm) Refractive index Nd Abbe number Vd S1 18.3170 1.8088 1.95 32.32 S2 6.5393 4.0379 S3 42.3937 1.0000 1.91 35.26 S4 5.1144 6.7717 S5 15.8384 3.9564 1.81 25.48 S6 -5.6598 0.7500 1.92 20.88 S7 -14.1024 2.1128 S8 11.2280 1.3240 1.74 49.34 S9 8.4198 0.3110 STO infinity 0.2993 S11 45.0000 3.1017 1.50 81.59 S12 -4.9830 0.1000 S13 5.9113 2.9297 1.64 60.21 S14 -4.5689 0.7500 1.85 23.79 S15 5.1534 0.2796 S16 5.8862 1.5803 1.50 81.59 S17 120.0000 0.4382 S18 infinity 0.5500 1.52 64.21 S19 infinity 1.3000 S20 infinity 0.5000 1.52 64.21 S21 infinity 0.2021 IMA infinity -

[0167] Table 3

[0168]

[0169]

[0170] Table 4

[0171] Example 3

[0172] 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.

[0173] like Figure 3As 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, an eighth lens L8, and a ninth lens L9.

[0174] 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 convex-convex lens with positive optical power, its first side surface S5 is convex, and its second side surface S6 is convex. The fourth lens L4 is a concave-convex lens with negative optical power, its first side surface S6 is concave, and its second side surface S7 is convex. The fifth lens L5 is a convex-concave lens with positive optical power, its first side surface S8 is convex, and its second side surface S9 is concave. The sixth lens L6 is a concave-convex lens with positive optical power, its first side surface S11 is concave, and its second side surface S12 is convex. The seventh lens L7 is a convex-convex lens with positive optical power, its first side surface S13 is convex, and its second side surface S14 is convex. The eighth lens, L8, is a concave-concave lens with negative optical power; its first side surface S14 is concave, and its second side surface S15 is concave. The ninth lens, L9, is a convex-convex lens with positive optical power; its first side surface S16 is convex, and its second side surface S17 is convex. The third lens, L3, and the fourth lens, L4, can be cemented together to form a cemented lens. The seventh lens, L7, and the eighth lens, L8, can be cemented together to form a cemented lens.

[0175] 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 S11 of the sixth lens L6.

[0176] Optionally, the optical lens may further include a filter L10 having a first side surface S18 and a second side surface S19 and / or a protective glass L11 having a first side surface S20 and a second side surface S21. The filter L10 and / or the protective glass L11 can be used to correct color deviation, and the filter L10 and / or the protective glass L11 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 S21 and is finally imaged on the imaging surface.

[0177] 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 S21 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 S21 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.

[0178] 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.

[0179] Face number Radius of curvature R (mm) Thickness / Distance d (mm) Refractive index Nd Abbe number Vd S1 17.4824 1.8874 1.95 32.32 S2 6.5298 4.1000 S3 50.0511 1.0000 1.91 35.26 S4 5.2973 3.4330 S5 120.0000 4.0000 1.81 25.48 S6 -5.2841 4.0000 1.92 20.88 S7 -11.1449 1.2784 S8 4.3258 1.3901 1.74 49.34 S9 4.2382 0.8545 STO infinity 0.1833 S11 -14.8541 3.2752 1.50 81.59 S12 -4.2134 0.1000 S13 5.9501 3.1817 1.64 60.21 S14 -4.0317 0.7500 1.85 23.79 S15 5.6381 0.2523 S16 6.8307 2.1242 1.50 81.59 S17 -13.8583 0.1382 S18 infinity 0.5500 1.52 64.21 S19 infinity 1.2536 S20 infinity 0.5000 1.52 64.21 S21 infinity 0.2021 IMA infinity -

[0180] Table 5

[0181] Face number k A4 A6 A8 A10 A12 A14 A16 S8 0.0172 1.5322E-03 8.3288E-05 1.6489E-06 1.1098E-06 1.5549E-08 -2.7240E-08 2.1088E-09 S9 -0.9427 5.4160E-03 4.4304E-04 5.7083E-05 4.8959E-06 2.2288E-20 3.3431E-23 5.8561E-26 S11 18.3715 3.1620E-04 -1.9212E-05 3.6715E-06 8.6132E-07 -1.1977E-06 2.1940E-16 -1.0911E-25 S12 -0.8764 -2.3978E-03 -1.2462E-04 -2.4548E-05 3.1529E-06 -3.5056E-07 -2.1232E-15 -5.9444E-23 S16 2.4870 1.1250E-03 -2.0182E-04 -1.1718E-05 1.7352E-06 -1.1971E-07 2.2216E-20 7.0440E-23 S17 -20.9272 1.1538E-03 -8.2436E-05 1.2012E-05 -1.8348E-06 3.7813E-08 -1.4699E-20 1.0214E-22

[0182] Table 6

[0183] Example 4

[0184] 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.

[0185] like Figure 4 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, an eighth lens L8, and a ninth lens L9.

[0186] 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 convex-convex lens with positive optical power, its first side surface S5 is convex, and its second side surface S6 is convex. The fourth lens L4 is a concave-convex lens with negative optical power, its first side surface S6 is concave, and its second side surface S7 is convex. The fifth lens L5 is a convex-concave lens with positive optical power, its first side surface S8 is convex, and its second side surface S9 is concave. The sixth lens L6 is a concave-convex lens with positive optical power, its first side surface S11 is concave, and its second side surface S12 is convex. The seventh lens L7 is a convex-convex lens with positive optical power, its first side surface S13 is convex, and its second side surface S14 is convex. The eighth lens, L8, is a concave-concave lens with negative optical power; its first side surface S14 is concave, and its second side surface S15 is concave. The ninth lens, L9, is a convex-convex lens with positive optical power; its first side surface S16 is convex, and its second side surface S17 is convex. The third lens, L3, and the fourth lens, L4, can be cemented together to form a cemented lens. The seventh lens, L7, and the eighth lens, L8, can be cemented together to form a cemented lens.

[0187] 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 S11 of the sixth lens L6.

[0188] Optionally, the optical lens may further include a filter L10 having a first side surface S18 and a second side surface S19 and / or a protective glass L11 having a first side surface S20 and a second side surface S21. The filter L10 and / or the protective glass L11 can be used to correct color deviation, and the filter L10 and / or the protective glass L11 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 S21 and is finally imaged on the imaging surface.

[0189] 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 S21 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 S21 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.

[0190] 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.

[0191]

[0192]

[0193] Table 7

[0194] Face number k A4 A6 A8 A10 A12 A14 A16 S8 -0.4136 7.5690E-04 6.6996E-05 -2.4744E-06 8.1671E-07 1.5549E-08 -2.7240E-08 2.1088E-09 S9 -4.4341 3.3440E-03 2.4604E-04 6.0473E-05 -2.3170E-06 -1.7879E-19 1.5112E-23 9.7653E-30 S11 16.2189 9.7124E-04 1.4342E-04 -1.9092E-06 4.5487E-06 -1.1977E-06 2.1940E-16 -2.9641E-25 S12 -0.8671 -4.2162E-04 -1.1885E-04 -2.5296E-05 3.6272E-06 -3.5056E-07 -2.1235E-15 -1.3030E-21 S16 2.4430 3.8361E-04 -2.1005E-04 -1.1014E-05 1.5627E-06 -1.2342E-07 -2.5889E-15 8.1938E-23 S17 -27.0344 7.3540E-04 -9.9903E-05 1.2142E-05 -1.9655E-06 3.7814E-08 3.0552E-14 1.0194E-22

[0195] Table 8

[0196] Example 5

[0197] 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.

[0198] 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, an eighth lens L8, and a ninth lens L9.

[0199] 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 S6 is concave, and its second side surface S7 is convex. The fifth lens L5 is a convex-concave lens with positive optical power, its first side surface S8 is convex, and its second side surface S9 is concave. The sixth lens L6 is a concave-convex lens with positive optical power, its first side surface S11 is concave, and its second side surface S12 is convex. The seventh lens L7 is a convex-convex lens with positive optical power, its first side surface S13 is convex, and its second side surface S14 is convex. The eighth lens, L8, is a concave-concave lens with negative optical power; its first side surface S14 is concave, and its second side surface S15 is concave. The ninth lens, L9, is a convex-concave lens with positive optical power; its first side surface S16 is convex, and its second side surface S17 is concave. The third lens, L3, and the fourth lens, L4, can be cemented together to form a cemented lens. The seventh lens, L7, and the eighth lens, L8, can be cemented together to form a cemented lens.

[0200] 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 S11 of the sixth lens L6.

[0201] Optionally, the optical lens may further include a filter L10 having a first side surface S18 and a second side surface S19 and / or a protective glass L11 having a first side surface S20 and a second side surface S21. The filter L10 and / or the protective glass L11 can be used to correct color deviation, and the filter L10 and / or the protective glass L11 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 S21 and is finally imaged on the imaging surface.

[0202] 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 S21 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 S21 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.

[0203] 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.

[0204]

[0205]

[0206] Table 9

[0207] Face number k A4 A6 A8 A10 A12 A14 A16 S8 -0.1402 3.8900E-04 1.6425E-05 4.2643E-07 1.4795E-08 5.3852E-10 1.9374E-11 -8.8862E-22 S9 -1.5855 2.6429E-03 2.5433E-04 -7.8428E-06 4.3098E-06 5.7704E-19 8.8409E-22 1.3720E-24 S11 15.8962 6.6387E-04 -5.6699E-05 -3.1319E-05 5.4238E-06 -1.1977E-06 2.1940E-16 -9.6813E-26 S12 -0.4149 -8.0035E-04 -1.7138E-04 -1.1548E-05 1.6059E-07 -3.5056E-07 -2.1231E-15 3.9814E-26 S16 -4.8719 5.1864E-04 -6.5161E-05 -1.0609E-05 6.7132E-07 8.8775E-09 -1.7094E-20 -5.4376E-23 S17 99.0000 1.8000E-05 -5.2665E-05 4.2637E-06 -1.4290E-06 9.7452E-08 6.6618E-21 3.6889E-23

[0208] Table 10

[0209] Example 6

[0210] 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.

[0211] 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, an eighth lens L8, and a ninth lens L9.

[0212] 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 S6 is concave, and its second side surface S7 is convex. The fifth lens L5 is a convex-concave lens with positive optical power, its first side surface S8 is convex, and its second side surface S9 is concave. The sixth lens L6 is a concave-convex lens with positive optical power, its first side surface S11 is concave, and its second side surface S12 is convex. The seventh lens L7 is a convex-convex lens with positive optical power, its first side surface S13 is convex, and its second side surface S14 is convex. The eighth lens, L8, is a concave-concave lens with negative optical power; its first side surface S14 is concave, and its second side surface S15 is concave. The ninth lens, L9, is a convex-concave lens with positive optical power; its first side surface S16 is convex, and its second side surface S17 is concave. The third lens, L3, and the fourth lens, L4, can be cemented together to form a cemented lens. The seventh lens, L7, and the eighth lens, L8, can be cemented together to form a cemented lens.

[0213] 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 S11 of the sixth lens L6.

[0214] Optionally, the optical lens may further include a filter L10 having a first side surface S18 and a second side surface S19 and / or a protective glass L11 having a first side surface S20 and a second side surface S21. The filter L10 and / or the protective glass L11 can be used to correct color deviation, and the filter L10 and / or the protective glass L11 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 S21 and is finally imaged on the imaging surface.

[0215] 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 S21 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 S21 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.

[0216] 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.

[0217] Face number Radius of curvature R (mm) Thickness / Distance d (mm) Refractive index Nd Abbe number Vd S1 16.1271 1.1623 1.95 32.32 S2 7.3747 3.9106 S3 20.5258 1.6176 1.91 35.26 S4 4.4659 4.1164 S5 -6.3638 1.3441 1.74 44.90 S6 -8.6104 4.0375 1.90 31.42 S7 -8.7411 0.5971 S8 5.5723 3.9944 1.74 49.34 S9 7.5901 2.0623 STO infinity 0.1000 S11 -40.6533 1.5108 1.50 81.59 S12 -6.5760 0.1982 S13 5.4906 2.4739 1.50 81.59 S14 -4.7473 0.7500 1.92 20.88 S15 50.6148 0.7433 S16 5.3165 1.7879 1.50 81.59 S17 176.4014 0.5382 S18 infinity 0.5500 1.52 64.21 S19 infinity 1.3525 S20 infinity 0.5000 1.52 64.21 S21 infinity 0.2021 IMA infinity -

[0218] Table 11

[0219] Face number k A4 A6 A8 A10 A12 A14 A16 S8 -0.1562 3.2230E-04 1.5375E-05 3.4102E-07 1.6023E-08 5.1885E-10 1.6489E-11 -8.8028E-22 S9 -1.1871 2.4792E-03 2.5951E-04 -6.8547E-06 4.3099E-06 5.7740E-19 8.8570E-22 1.3765E-24 S11 66.6107 6.9526E-05 -3.5043E-05 -3.2117E-05 5.6032E-06 -1.1977E-06 2.1940E-16 -9.6279E-26 S12 -0.4199 -1.1000E-03 -1.4726E-04 -1.2290E-05 3.4519E-08 -3.5056E-07 -2.1231E-15 3.8183E-26 S16 -3.2142 1.7198E-03 -2.9040E-05 -5.9760E-06 -3.1835E-07 2.8454E-08 -1.7068E-20 -5.4173E-23 S17 -40.6425 2.1785E-03 -1.0382E-05 1.6471E-06 -1.8370E-06 9.7452E-08 6.6354E-21 3.6744E-23

[0220] Table 12

[0221] Example 7

[0222] 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.

[0223] 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, an eighth lens L8, and a ninth lens L9.

[0224] 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 S6 is concave, and its second side surface S7 is convex. The fifth lens L5 is a convex-concave lens with positive optical power, its first side surface S8 is convex, and its second side surface S9 is concave. The sixth lens L6 is a concave-convex lens with positive optical power, its first side surface S11 is concave, and its second side surface S12 is convex. The seventh lens L7 is a convex-convex lens with positive optical power, its first side surface S13 is convex, and its second side surface S14 is convex. The eighth lens, L8, is a concave-convex lens with negative optical power; its first side surface S14 is concave, and its second side surface S15 is convex. The ninth lens, L9, is a convex-convex lens with positive optical power; its first side surface S16 is convex, and its second side surface S17 is convex. The third lens, L3, and the fourth lens, L4, can be cemented together to form a cemented lens. The seventh lens, L7, and the eighth lens, L8, can be cemented together to form a cemented lens.

[0225] 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 S11 of the sixth lens L6.

[0226] Optionally, the optical lens may further include a filter L10 having a first side surface S18 and a second side surface S19 and / or a protective glass L11 having a first side surface S20 and a second side surface S21. The filter L10 and / or the protective glass L11 can be used to correct color deviation, and the filter L10 and / or the protective glass L11 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 S21 and is finally imaged on the imaging surface.

[0227] 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 S21 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 S21 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.

[0228] 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.

[0229]

[0230]

[0231] Table 13

[0232] Face number k A4 A6 A8 A10 A12 A14 A16 S8 -0.0862 4.6888E-04 1.9606E-05 3.8674E-07 1.5961E-08 9.6427E-10 2.2481E-12 -2.8839E-23 S9 -3.0260 3.8892E-03 2.4999E-04 -1.1224E-05 4.1213E-06 2.9006E-21 8.2517E-24 1.9419E-26 S11 46.2454 3.2410E-03 2.6730E-04 -5.9375E-05 1.4537E-05 -1.1977E-06 2.1940E-16 3.7684E-28 S12 -2.7465 1.0237E-04 8.7189E-05 -3.4120E-05 6.1748E-06 -3.5056E-07 -2.1231E-15 -1.0967E-26 S16 -75.2218 5.6693E-05 -2.1436E-05 -7.1980E-06 1.3535E-06 -3.2588E-08 -2.6927E-23 8.4347E-25 S17 -1.8472 4.9080E-06 -1.1380E-04 2.2567E-05 -2.0635E-06 9.7452E-08 2.8227E-22 1.4816E-25

[0233] Table 14

[0234] Example 8

[0235] 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.

[0236] like Figure 8 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, an eighth lens L8, and a ninth lens L9.

[0237] 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 S6 is concave, and its second side surface S7 is convex. The fifth lens L5 is a convex-concave lens with positive optical power, its first side surface S8 is convex, and its second side surface S9 is concave. The sixth lens L6 is a concave-convex lens with positive optical power, its first side surface S11 is concave, and its second side surface S12 is convex. The seventh lens L7 is a convex-convex lens with positive optical power, its first side surface S13 is convex, and its second side surface S14 is convex. The eighth lens, L8, is a concave-convex lens with negative optical power; its first side surface S14 is concave, and its second side surface S15 is convex. The ninth lens, L9, is a convex-convex lens with positive optical power; its first side surface S16 is convex, and its second side surface S17 is convex. The third lens, L3, and the fourth lens, L4, can be cemented together to form a cemented lens. The seventh lens, L7, and the eighth lens, L8, can be cemented together to form a cemented lens.

[0238] 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 S11 of the sixth lens L6.

[0239] Optionally, the optical lens may further include a filter L10 having a first side surface S18 and a second side surface S19 and / or a protective glass L11 having a first side surface S20 and a second side surface S21. The filter L10 and / or the protective glass L11 can be used to correct color deviation, and the filter L10 and / or the protective glass L11 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 S21 and is finally imaged on the imaging surface.

[0240] 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 S21 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 S21 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.

[0241] 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.

[0242]

[0243]

[0244] Table 15

[0245] Face number k A4 A6 A8 A10 A12 A14 A16 S8 -0.1189 3.8373E-04 1.6332E-05 4.7495E-07 1.2645E-08 2.7556E-10 2.6857E-11 1.0030E-23 S9 -1.8123 2.6023E-03 2.5517E-04 -9.1862E-06 4.1415E-06 3.6671E-21 8.0547E-24 1.8124E-26 S11 14.9180 2.6553E-03 1.6296E-04 -6.8410E-05 1.3612E-05 -1.1977E-06 2.1940E-16 2.2446E-27 S12 -1.3117 -6.0446E-04 -6.8416E-05 -3.2837E-05 4.4471E-06 -3.5056E-07 -2.1231E-15 -3.5247E-27 S16 -17.2403 6.3521E-04 -3.1201E-05 -7.1431E-06 1.4814E-06 -3.5956E-08 -3.7018E-22 1.7213E-24 S17 -1.8226 2.5435E-04 -8.8090E-05 1.8725E-05 -1.7909E-06 9.7452E-08 5.0745E-22 7.1364E-25

[0246] Table 16

[0247] In summary, Examples 1 to 8 respectively satisfy the relationships shown in Table 17 below. In Table 17, the units of F, H, TTL, BFL, ENPD, R2F, R2B, R3F, R3B, R4F, R8F, R9F, R9B, d8, F1, F2, F3, F4, F5, F6, F7, F8, F9, F34, F78, Rj1, Rj2, and Φj2 are millimeters (mm), and the units of FOV and θ are degrees (°).

[0248]

[0249]

[0250] Table 17

[0251] 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.

[0252] 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, In order from a first side to a second side along an optical axis, the optical lens comprises: a first lens with negative refractive power, a first side of which is convex and a second side of which is concave; a second lens with negative refractive power, a first side of which is convex and a second side of which is concave; a third lens with refractive power, a second side of which is convex; a fourth lens with refractive power, a first side of which is concave and a second side of which is convex; a fifth lens with refractive power, a first side of which is convex and a second side of which is concave; a sixth lens with positive refractive power, a second side of which is convex; a seventh lens with positive refractive power, a first side of which is convex and a second side of which is convex; an eighth lens with negative refractive power, a first side of which is concave; and a ninth lens with positive refractive power, a first side of which is convex; wherein the number of lenses with refractive power in the optical lens is nine; the third lens has positive refractive power, the fourth lens has negative refractive power, and the fifth lens has positive refractive power or negative refractive power; or the third lens has negative refractive power, and the fourth lens and the fifth lens have positive refractive power; the maximum field of view angle FOV of the optical lens, the focal length F of the optical lens, and the image height H corresponding to the maximum field of view angle of the optical lens satisfy: 48°≤(FOV×F) / H≤59.3990°; the focal length F78 of the second cemented lens composed of the seventh lens and the eighth lens and the focal length F of the optical lens satisfy: 5≤|F78 / F|≤199.3367.

2. The optical lens of claim 1, wherein, A first side of the third lens is convex.

3. The optical lens of claim 1, wherein, A first side of the third lens is concave.

4. The optical lens of claim 1, wherein, A first side of the sixth lens is convex.

5. The optical lens of claim 1, wherein, A first side of the sixth lens is concave.

6. The optical lens of claim 1, wherein, A second side of the eighth lens is concave.

7. The optical lens of claim 1, wherein, A second side of the eighth lens is convex.

8. The optical lens of claim 1, wherein, A second side of the ninth lens is concave.

9. The optical lens of claim 1, wherein, A second side of the ninth lens is convex.

10. The optical lens of any of claims 1-9, 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 angle of the optical lens, and the maximum field of view angle FOV of the optical lens satisfy: 4.1985≤TTL / H / FOV×180°≤4.4230.

11. The optical lens of any of claims 1-9, wherein, The image height H corresponding to the maximum field of view angle of the optical lens, the focal length F of the optical lens, and the maximum field of view angle radian value θ of the optical lens satisfy: |(H-F×θ) / (F×θ)|≤0.0354.

12. The optical lens of any of claims 1-9, wherein, The image height H corresponding to the maximum field of view angle of the optical lens, the focal length F of the optical lens, and the maximum field of view angle radian value θ of the optical lens satisfy: 0.2161≤|(H / 2) / (F×tan(θ / 2))|≤0.2317.

13. The optical lens of any of claims 1-9, wherein, The distance BFL from the center of the second side of the ninth lens to the imaging surface of the optical lens on the optical axis 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: 0.03≤BFL / TTL≤0.1340.

14. The optical lens of any of claims 1-9, wherein, The maximum field of view FOV of the optical lens, 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: 55.4040°≤(FOVxF) / H≤59.3990°.

15. The optical lens of any of claims 1-9, wherein, The focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy: 2.1000≤F / ENPD≤2.

5.

16. The optical lens of any of claims 1-9, wherein, The focal length F of the optical lens, the curvature radius R2F of the first side of the second lens, and the curvature radius R2B of the second side of the second lens satisfy: 0.4471≤|F / R2F|+|F / R2B|≤1.

0.

17. The optical lens of any of claims 1-9, wherein, The focal length F2 of the second lens and the curvature radius R2B of the second side of the second lens satisfy: -1.4978≤F2 / R2B≤-1.

18. The optical lens of any of claims 1-9, wherein, The focal length F3 of the third lens and the focal length F4 of the fourth lens satisfy: 0.2≤|F3 / F4|≤1.

6.

19. The optical lens of any of claims 1-9, wherein, The first cemented lens composed of the third lens and the fourth lens has a first cemented surface, and the central curvature radius Rj1 of the first cemented surface and the effective aperture Φj1 of the first cemented surface satisfy: 0.8≤|Rj1| / (Φj1 / 2)≤2.0360.

20. The optical lens of any of claims 1-9, wherein, The focal length F6 of the sixth lens and the focal length F7 of the seventh lens satisfy: 1≤F6 / F7≤3.3248.

21. The optical lens of any of claims 1-9, wherein, The focal length F7 of the seventh lens and the focal length F8 of the eighth lens satisfy: 0.8≤|F7 / F8|≤1.

85.

22. The optical lens of any of claims 1-9, wherein, The focal length F7 of the seventh lens, the focal length F8 of the eighth lens, and the focal length F of the optical lens satisfy: -20mm≤F7xF8 / F≤-3mm.

23. The optical lens of any of claims 1-9, wherein, The focal length F9 of the ninth lens and the focal length F of the optical lens satisfy: 3≤F9 / F≤5.8359.

24. The optical lens of any of claims 1-9, wherein, The second cemented lens composed of the seventh lens and the eighth lens has a second cemented surface, and the central curvature radius Rj2 of the second cemented surface and the effective aperture Φj2 of the second cemented surface satisfy: 1≤|Rj2| / (Φj2 / 2)≤1.8821.

25. The optical lens of any of claims 1-9, wherein, The curvature radius R8F of the first side of the eighth lens, the curvature radius R9F of the first side of the ninth lens, and the central thickness d8 of the eighth lens satisfy: -0.7825≤R8F / (R9F+d8)≤-0.

02.

26. The optical lens of any of claims 1-9, 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 image height H corresponding to the maximum field of view of the optical lens satisfy: 9.02≤TTL / (H / 2)≤9.5832.

27. The optical lens of any of claims 1-9, wherein, The curvature radius R3F of the first side of the third lens and the curvature radius R3B of the second side of the third lens satisfy: 0.72≤|R3F / R3B|≤22.7097.

28. The optical lens of any of claims 1-9, wherein, The curvature radius R9F of the first side of the ninth lens and the curvature radius R9B of the second side of the ninth lens satisfy: -0.0516≤R9F / (R9F-R9B)≤0.

95.

29. The optical lens of any of claims 1-9, wherein, The radius of curvature R3F of the first side of the third lens and the radius of curvature R4F of the first side of the fourth lens satisfy: -0.8≤(R3F-R4F) / (R3F+R4F)≤2.1121.

30. The optical lens of any of claims 1-9, wherein, The optical lens satisfies any one of the following conditional expressions: 0.0008≤|(H-Fxθ) / (Fxθ)|≤0.0354; 0.0767≤BFL / TTL≤0.1340; 2.1000≤F / ENPD≤2.3; 0.4471≤|F / R2F|+|F / R2B|≤0.6486; -1.4978≤F2 / R2B≤-1.2286; 0.3541≤|F3 / F4|≤1.4969; 1.3948≤|Rj1| / (Φj1 / 2)≤2.0360; 1.5≤F6 / F7≤3.3248; 1.1521≤|F7 / F8|≤1.6461; 6.0171≤|F78 / F|≤199.3367; -13.7751mm≤F7xF8 / F≤-5.3134mm; 4.2638≤F9 / F≤5.8359; 1.4479≤|Rj2| / (Φj2 / 2)≤1.8821; -0.7825≤R8F / (R9F+d8)≤-0.0795; 9.0967≤TTL / (H / 2)≤9.5832; 0.7391≤|R3F / R3B|≤22.7097; -0.0516≤R9F / (R9F-R9B)≤0.8991; -0.1500≤(R3F-R4F) / (R3F+R4F)≤2.1121; Wherein, TTL is the distance from the center of the first side 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 angle of the optical lens, F is the focal length of the optical lens, θ is the maximum field angle of the optical lens, BFL is the distance from the center of the second side of the ninth lens to the imaging plane of the optical lens on the optical axis, ENPD is the entrance pupil diameter of the optical lens, R2F is the radius of curvature of the first side of the second lens, R2B is the radius of curvature of the second side of the second lens, F2 is the focal length of the second lens, F3 is the focal length of the third lens, F4 is the focal length of the fourth lens, Rj1 is the central radius of curvature of the first cemented surface of the first cemented lens composed of the third lens and the fourth lens, Φj1 is the effective aperture of the first cemented surface, F6 is the focal length of the sixth lens, F7 is the focal length of the seventh lens, F8 is the focal length of the eighth lens, F78 is the focal length of the second cemented lens composed of the seventh lens and the eighth lens, F9 is the focal length of the ninth lens, Rj2 is the central radius of curvature of the second cemented surface of the second cemented lens, Φj2 is the effective aperture of the second cemented surface, R8F is the radius of curvature of the first side of the eighth lens, R9F is the radius of curvature of the first side of the ninth lens, d8 is the central thickness of the eighth lens, R3F is the radius of curvature of the first side of the third lens, R3B is the radius of curvature of the second side of the third lens, R9B is the radius of curvature of the second side of the ninth lens, R4F is the radius of curvature of the first side of the fourth lens.

31. An electronic device, comprising: The optical lens according to any one of claims 1-30 and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

Images