Optical lens and electronic equipment

Abstract

The invention discloses an optical lens and electronic equipment, and the optical lens sequentially comprises a first lens with negative focal power from a first side to a second side along an optical axis, the first side surface of the first lens is a convex surface, and the second side surface of the first lens is a concave surface; the second lens has negative focal power; the third lens has negative focal power; the fourth lens has positive focal power, the first side surface of the fourth lens is a convex surface, and the second side surface of the fourth lens is a convex surface; the fifth lens has positive focal power; the number of the lenses with focal power in the optical lens is five; the optical lens satisfies the following conditions: F1 is less than F2; wherein F1 is the focal length of the first lens, and F2 is the focal length of the second lens.

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] LiDAR lenses are one of the key components for detecting information about the environment around a vehicle, and their performance directly affects the safety of autonomous driving. Many existing LiDAR lenses suffer from a small field of view, resulting in numerous blind spots, reducing their sensing range, and limiting the improvement of autonomous driving safety. Summary of the Invention

[0003] The first aspect of this application provides an optical lens comprising, along an optical axis from a first side to a second side, a first lens having negative optical power, wherein a first side surface of the first lens is convex and a second side surface of the first lens is concave; a second lens having negative optical power; a third lens having negative optical power; a fourth lens having positive optical power, wherein a first side surface of the fourth lens is convex and a second side surface of the fourth lens is convex; and a fifth lens having positive optical power; wherein the number of lenses having optical power in the optical lens is five; and the optical lens satisfies: |F1| < |F2|; wherein F1 is the focal length of the first lens and F2 is the focal length of the second lens.

[0004] The second aspect of this application provides an electronic device comprising an optical lens as described in the exemplary embodiments above, and at least one of an imaging element and a light source, wherein the imaging element is used to convert an optical image or optical information formed by the optical lens into an electrical signal, the light source is located on a second side of the optical lens, and the light emitted by the light source is projected onto a first side of the optical lens after passing through the optical lens, forming an image or an illuminated area on the first side of the optical lens.

[0005] A first lens with negative optical power can disperse the central and peripheral rays in each field of view, effectively dispersing the incident light. At the same field of view, the light emanating from the second side of the first lens allows the subsequent optical system to have a larger light-receiving surface and obtain a greater amount of light, ensuring higher relative illumination and providing a more uniform light distribution for subsequent lenses, thus increasing image illumination. By designing the first side of the first lens as convex and the second side as concave, the light emanating from the first lens can enter the subsequent optical system more smoothly, helping to reduce system sensitivity. Furthermore, designing the first side of the first lens as convex also facilitates the sliding of water droplets on the first side during practical applications, reducing the impact of water droplets on imaging. The light emanating from the first lens then enters the second lens. By designing the optical power of the second lens to be negative and controlling the focal length F2 of the second lens and the focal length F1 of the first lens to satisfy |F1|<|F2|, the focal length of the negative optical power lens group at the front end of the system can be gradually varied. This helps to maintain high imaging quality while expanding the system's field of view and is beneficial for achieving large-area detection. Based on this, the optical lens of this application can achieve a larger detection range when used as a lidar lens. The light emitted from the second lens is appropriately diverged by the third lens with a negative optical power design and then enters the fourth lens with a positive optical power design. The light is then converged by the fourth lens and then enters the fifth lens with a positive optical power design. The first side surface of the fourth lens is designed to be convex, and the second side surface of the fourth lens is also designed to be convex, which can collect as much light as possible and quickly enter the rear optical system, reducing the system size. Here, |F1|<|F2| means that the optical power of the first lens is stronger (smaller absolute value of focal length). The first lens can efficiently gather the divergent light at the edge of the large field of view, initially reducing the propagation angle difference between the edge light and the center light, thereby reducing the initial distortion. |F1| < |F2| also means that the second lens has a slightly weaker optical power (larger absolute focal length). The second lens can take over the optical path corrected by the first lens, thus further optimizing the light angle with a smoother adjustment. This avoids abrupt changes in the optical path caused by excessive correction force in a single step, thereby preventing new distortions (such as local field curvature or astigmatism). This strong-weak stepped correction method ensures that the light rays at the edge of the large field of view are effectively constrained, while avoiding overcorrection that could disrupt the optical path balance. It lays a low-distortion optical path foundation for the secondary optimization of the third lens (negative optical power) and the focusing of the fourth and fifth lenses (positive optical power), ultimately helping the system maintain a low-distortion state in a wide field of view and ensuring the detection accuracy of the lidar.By controlling the first and second lenses to satisfy |F1| < |F2|, the first lens can compress the diverging light path across a large field of view with a stronger optical power, while the second lens can gently adjust the light path with a slightly weaker optical power. Together, they provide the third lens with a stable output angle and controllable divergence. This stable light path input directly provides a clear connection benchmark for the subsequent connection between the third and fourth lenses, ensuring that the light can be smoothly transmitted to the fourth lens and avoiding optical path disconnection or aberration superposition. This achieves the compression of initial distortion by the first and second lenses, and the aberration-free connection of light between the third and fourth lenses. By satisfying |F1| < |F2|, the output light of the second lens can be controlled, thereby affecting the processing of light by the third and fourth lenses.

[0006] In one example, the first side surface of the second lens is convex, and the second side surface of the second lens is concave; or

[0007] The first side surface of the second lens is concave, and the second side surface of the second lens is convex; the first side surface of the third lens is concave, and the second side surface of the third lens is convex; or the first side surface of the third lens is convex, and the second side surface of the third lens is concave; the first side surface of the fifth lens is convex, and the second side surface of the fifth lens is concave; or the first side surface of the fifth lens is convex, and the second side surface of the fifth lens is convex; or the first side surface of the fifth lens is concave, and the second side surface of the fifth lens is convex.

[0008] The letters used in this application are defined as follows: F is the focal length of the optical lens, ENPD is the entrance pupil diameter of the optical lens, TTL is the total optical length of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, FOV is the maximum field of view of the optical lens, BFL is the optical back focal length of the optical lens, θ is the radian value of the maximum field of view of the optical lens, F1 is the focal length of the first 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, F5 is the focal length of the fifth lens, R1 is the central radius of curvature of the first side surface of the first lens, R2 is the central radius of curvature of the second side surface of the first lens, R5 is the central radius of curvature of the first side surface of the third lens, R6 is the central radius of curvature of the second side surface of the third lens, R7 is the central radius of curvature of the first side surface of the fourth lens, and R8 is the central radius of curvature of the fourth lens. R9 is the center radius of curvature of the second side of the fifth lens, CT1 is the center thickness of the first lens, CT12 is the center distance between the first lens and the second lens, CT2 is the center thickness of the second lens, CT3 is the center thickness of the third lens, CT34 is the center distance between the third lens and the fourth lens, CT4 is the center thickness of the fourth lens, CT45 is the center distance between the fourth lens and the fifth lens, CTG4 is the center distance between the aperture and the first side of the fourth lens, D is the aperture corresponding to the maximum field of view of the optical lens on the first side of the first lens, D5 is the aperture corresponding to the maximum field of view of the optical lens on the first side of the third lens, and D10 is the aperture corresponding to the maximum field of view of the optical lens on the second side of the fifth lens.

[0009] In one example, the optical lens satisfies at least one of the following relationships: 0.85≤F / ENPD≤1.61, 5.784≤TTL / F≤11.086, 0.014≤TTL / H / FOV×1°≤0.03, 0.008≤D / H / FOV×1°≤0.015, 0.269≤D / H / F×1mm≤0.767, 0.41≤(F×θ) / D≤0.844, 1.187≤D / H≤2.4, -0.038≤(H / 2-(θ / 2)×F) / ((θ / 2)×F)≤0.016, 1.132≤D / D10≤2.375, 1.509≤D / D5≤3.166 or 23.967≤FOV / F / 1°×1mm≤66.605.

[0010] In one example, the optical lens satisfies at least one of the following relationships: -4.092≤F1 / F≤-1.78, -4.553≤R1 / F1+R2 / F1≤-1.37, or -13.734≤R1×R2 / ((R2-R1)+CT1) / 1mm≤-5.591;

[0011] In one example, the optical lens satisfies: -0.27 ≤ F / F2 < 0;

[0012] In one example, the optical lens satisfies at least one of the following relationships: -0.041≤F / F3<0, 0.024≤CT3 / TTL≤0.06, or 0.811≤R5 / (CT3+R6)≤1.599;

[0013] In one example, the optical lens satisfies at least one of the following relationships: 1.578≤F4 / F≤3.279, -1.274≤R7 / F4+R8 / F4≤0.511, or 4.927≤R7×R8 / ((R8-R7)+CT4) / 1mm≤9.198;

[0014] In one example, the optical lens satisfies at least one of the following relationships: 2.461≤F5 / F≤4.74 or 0.528≤|R9| / F5≤2.428;

[0015] In one example, the optical lens satisfies: 0.079≤(CT1+CT12+CT2) / TTL≤0.394;

[0016] In one example, the optical lens satisfies the following relationship: |F2| < |F3|;

[0017] In one example, the optical lens satisfies the following relationship: 0.082 ≤ F2 / F3 < 1;

[0018] In one example, the optical lens satisfies at least one of the following relationships: -0.163≤(R6 / F3) / (R7 / F4)≤0.059, 0.424≤|R7 / R6|≤2.245, -0.281≤(F / R7)+(F / R6)≤1.212 or 0.003≤CT34 / TTL≤0.102;

[0019] In one example, the optical lens satisfies at least one of the following relationships: 1.017≤F4 / CT45≤2.402, 1.152≤|R9| / CT45≤9.156, 0.11≤CT45 / TTL≤0.286, or 0.504≤(1 / F4+1 / F5)×F≤0.99;

[0020] In one example, the optical lens further includes an aperture stop; the optical lens satisfies at least one of the following relationships: -0.115≤CTG4 / F4≤0.184 or -0.035≤CTG4 / TTL≤0.056;

[0021] In one example, the optical lens satisfies: -18.581≤(F1+F2+F3) / (F4+F5)≤-5.089;

[0022] In one example, the optical lens satisfies: -0.856 ≤ (1 / F1 + 1 / F2 + 1 / F3) × F ≤ -0.428;

[0023] In one example, the optical lens satisfies: 0.05 ≤ F1 / F2 ≤ 0.821;

[0024] In one example, the optical lens satisfies: 0.449 ≤ |R10| / F5 ≤ 20.275;

[0025] In one example, the optical lens satisfies: -16.409 ≤ F3 / F5 ≤ -7.531;

[0026] In one example, the optical lens satisfies: -53.39 ≤ F3 / BFL ≤ -17.373;

[0027] In one example, the optical lens satisfies: 0.121 ≤ BFL / TTL ≤ 0.179;

[0028] In one example, the optical lens satisfies at least one of the following relationships: 1≤F / ENPD≤1.4, 6.805≤TTL / F≤9.64, 0.016≤TTL / H / FOV≤0.026, 0.142≤BFL / TTL≤0.174, 0.009≤D / H / FOV≤0.013, 0.317≤D / H / F≤0.667, 0.482≤(F×θ) / D≤0.734, -3.558≤F1 / F≤-2.094, -0.235≤F / F2≤-0.027, -0.039≤F / F3≤-0.022, 1.856≤F4 / F≤2.851, 2.895≤F5 / F≤4 .122, 0.059≤F1 / F2≤0.714, 0.097≤F2 / F3≤0.797, 0.499≤|R7 / R6|≤1.952, 0.129≤CT45 / TTL≤0.249, 0.028≤CT3 / TTL≤0.052, -0.1≤CTG4 / F4≤0.16, -0.03≤CTG4 / TTL≤0.049, 0.621≤|R9| / F5≤2.111, -0.033≤(H / 2-(θ / 2)×F ) / ((θ / 2)×F)≤0.014, 1.397≤D / H≤2.087, 0.954≤R5 / (CT3+R6)≤1.39, -16 .157≤(F1+F2+F3) / (F4+F5)≤-5.987, 0.093≤(CT1+CT12+CT2) / TTL≤0.343, -0.244≤(F / R7)+(F / R6)≤1.054, 28.196≤FOV / F≤57.917, 0.004≤CT34 / TTL≤0.089, 1.196≤F4 / CT45≤2.089, 1.355≤|R9| / CT45≤7.962, 1.332≤D1 / D10≤2.065, 1.775≤D1 / D5≤2.753, -0.142≤(R6 / F3) / (R7 / F4)≤0.051, -0 .744≤(1 / F1+1 / F2+1 / F3)×F≤-0.504, 0.593≤(1 / F4+1 / F5)×F≤0.861,-3. 959≤R1 / F1+R2 / F1≤-1.612, -11.943≤R1×R2 / ((R2-R1)+CT1)≤-6.578, -1 .108≤R7 / F4+R8 / F4≤0.444, 5.797≤R7×R8 / ((R8-R7)+CT4)≤7.998, 0.528 ≤|R10| / F5≤17.63, -14.269≤F3 / F5≤-7.927 or -46.426≤F3 / BFL≤-20.439. Attached Figure Description

[0029] Figures 1-10 The structural schematic diagrams of the optical lenses according to Embodiments 1-9 and Comparative Example 1 are shown in sequence. Figures 11-12 The modulation transfer function curve and distortion diagram of the optical lens according to Embodiment 1 of this application are shown in sequence.

[0030] Figures 13-14 The modulation transfer function curve and distortion diagram of the optical lens according to Embodiment 3 of this application are shown in sequence. Figure 15 A distortion diagram of the optical lens according to Comparative Example 1 of this application is shown. Detailed Implementation

[0031] To better understand this application, various aspects of this application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of this application and are not intended to limit the scope of this application in any way. Throughout the specification, the same reference numerals refer to the same elements.

[0032] 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.

[0033] 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 drawn strictly to scale.

[0034] In this paper, 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.

[0035] It should also be understood that the terms "comprising," "including," and / or "having," when used in this specification, indicate the presence of the stated features, elements, and / or components, but do not exclude the presence or addition of one or more other features, elements, components, and / or combinations thereof. Furthermore, 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.

[0036] 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 the 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.

[0037] 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.

[0038] The features, principles and other aspects of this application are described in detail below.

[0039] An optical lens according to an exemplary embodiment of this application may include, for example, five lenses with optical power, namely a first lens, a second lens, a third lens, a fourth lens, and a fifth lens, which are arranged sequentially from the first side to the second side along the optical axis.

[0040] In an exemplary embodiment, the optical lens provided in this application can be used as a light receiving lens or a light emitting lens, wherein: the light receiving lens is generally used to collect light from the object-side space, and the collected light is used to form detection information, including but not limited to imaging, laser point clouds, etc.; the light emitting lens is generally used to transmit light from the light emitting unit to the object-side space, and the light transmitted to the object-side space can be divided into projection light for forming a projection image or detection light for detecting target information, etc., according to the function of the light.

[0041] It is understood that when the optical lens provided in this application is used as a light-receiving lens such as a camera lens, a lidar receiver lens, a microscope lens, or a telescope lens, the term "first side" as used herein may refer to the object side, and "second side" may refer to the image side (such as the side where a photoelectric sensor or retina is located). That is, light from the object side can, for example, form an image on the image side. A camera lens may be, for example, a vehicle-mounted camera, an infrared camera, a drone camera, a night vision camera, a security monitoring camera, etc. When the optical lens provided in this application is used as a light-emitting lens such as a projection lens or a lidar transmitter lens, the term "first side" as used herein may refer to the object side, and "second side" may refer to the light source side.

[0042] In some possible implementations, the optical lens provided in this application can also simultaneously perform both light receiving and light transmitting functions. For example, the optical lens provided in this application is used in a lidar system with shared light and light paths, where the optical lens simultaneously performs the functions of emitting laser light and receiving radar echo beams. As another example, the optical lens provided in this application is used in a system integrating optical communication and radar, where the optical lens simultaneously performs the functions of emitting modulated optical signals and receiving radar echo beams.

[0043] In an exemplary embodiment, the first lens may have negative optical power, and its first side surface may be, for example, convex, while its second side surface may be, for example, concave. A first lens with negative optical power can disperse the central and peripheral rays of each field of view. At the same field of view angle, the light emitted from the second side surface of the first lens allows the rear optical system to have a larger light-receiving surface, thereby obtaining a greater amount of light and increasing image illumination. The convex design of the first side surface of the first lens combined with the concave design of the second side surface allows the emitted light from the first lens to enter the rear optical system more smoothly, which helps reduce system sensitivity. The convex design of the first side surface of the first lens also facilitates the sliding of water droplets off the first side surface, thereby reducing the impact of water droplets on imaging.

[0044] In an exemplary embodiment, the second lens may have negative optical power, and the first side surface of the second lens may be, for example, convex, and the second side surface of the second lens may be, for example, concave. Designing the first side surface of the second lens as convex allows it to collect more light into the rear optical system. Designing the second side surface of the second lens as concave allows the light emitted from the second side surface to enter the rear optical system more smoothly, which is beneficial for the system's low sensitivity.

[0045] In an exemplary embodiment, the second lens may have negative optical power. The first side of the second lens may be, for example, concave, and the second side may be, for example, convex. Designing the first side of the second lens as concave facilitates proper light diffusion, catching the diverging light from the first lens and reducing light refraction. Furthermore, designing the second side of the second lens as convex makes the overall shape of the second lens crescent-shaped, thereby converging the light to the third lens to a certain extent. The second lens can deflect incident light rays at a smaller angle, better correcting aberrations while maintaining the system in a low-sensitivity state, thus improving the system's resolution.

[0046] In an exemplary embodiment, the third lens may have negative optical power, and the first side surface of the third lens may be, for example, concave, and the second side surface of the third lens may be, for example, convex. This design allows the third lens to be meniscus-shaped, and this surface design of the third lens facilitates proper diffusion of light collected from the large aperture at the front end, thereby helping to correct aberrations and improve the system's resolving power.

[0047] In an exemplary embodiment, the third lens may have negative optical power, and the first side of the third lens may be, for example, convex, and the second side of the third lens may be, for example, concave. The negative optical power design of the third lens is beneficial for proper light diffusion. The convex design of the first side of the third lens, combined with the concave design of the second side of the third lens, makes the third lens meniscus, which is beneficial for proper diffusion of light collected by the large aperture at the front end, thereby helping to correct aberrations and improve the system's resolution.

[0048] In an exemplary embodiment, the fourth lens may have positive optical power, and its first side surface may be, for example, convex, as may be, a second side surface. Designing the first side surface of the fourth lens as convex allows for the collection of more light into the rear optical system. Designing the second side surface of the fourth lens as convex allows light to converge into the rear optical system more quickly, which helps to reduce system size.

[0049] In an exemplary embodiment, the fifth lens may have positive optical power, and its first side surface may be, for example, convex, and its second side surface may be, for example, concave. Designing the first side surface of the fifth lens as convex allows more light to enter the rear optical system. Designing the second side surface of the fifth lens as concave allows light to enter the rear optical system more smoothly, which helps reduce the system's sensitivity.

[0050] In an exemplary embodiment, the fifth lens may have positive optical power, and its first side surface may be, for example, convex, as may be, a second side surface. Designing the first side surface of the fifth lens as convex allows more light to enter the rear optical system. Designing the second side surface of the fifth lens as convex allows light to transition quickly to the rear optical system, which is beneficial for reducing the rear aperture of the lens.

[0051] In an exemplary embodiment, the fifth lens may have positive optical power, and its first side surface may be, for example, concave, and its second side surface may be, for example, convex. Designing the first side surface of the fifth lens as concave helps reduce light refraction. Furthermore, designing the second side surface of the fifth lens as convex allows the fifth lens to have a meniscus shape, thereby enabling light to converge onto the image plane to a certain extent. This better corrects aberrations while ensuring the system remains in a low-sensitivity state, thus improving resolution.

[0052] In an exemplary embodiment, the optical lens may further include an aperture stop, which may be disposed, for example, between the third lens and the fourth lens. By disposing an aperture stop between the third and fourth lenses, it is beneficial to balance the aperture sizes of the front and rear lenses, achieving a smaller aperture number while smoothing the light path. It should be understood that disposing the aperture stop between the third and fourth lenses is merely exemplary, and this application does not impose specific limitations on it; the aperture stop may be disposed in other positions as needed.

[0053] In an exemplary embodiment, the surfaces of the third, fourth, and fifth lenses may have one or more aspherical surfaces with different curvatures at different locations. The aspherical surfaces can adjust the light path to converge onto the image plane, thereby better correcting aberrations and improving resolution.

[0054] In an exemplary embodiment, the optical lens may further include a filter located between the fifth lens and the image plane to filter light of different wavelengths. The optical lens may also, as needed, provide a protective glass between the filter and the image plane to prevent damage to internal components (e.g., chips) of the optical lens.

[0055] 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).

[0056] In an exemplary embodiment, the optical lens satisfies: 0.85 ≤ F / ENPD ≤ 1.61. Preferably, 1 ≤ F / ENPD ≤ 1.4. This design reduces the aperture number of the optical lens, which is beneficial for increasing the amount of light entering the lens.

[0057] In an exemplary embodiment, the optical lens satisfies: 5.784 ≤ TTL / F ≤ 11.086. Preferably, 6.805 ≤ TTL / F ≤ 9.64. This design balances the long focal length and miniaturization of the optical lens.

[0058] In an exemplary embodiment, the optical lens satisfies: 0.014 ≤ TTL / H / FOV × 1° ≤ 0.03. Preferably, 0.016 ≤ TTL / H / FOV × 1° ≤ 0.026. This design effectively limits the length of the optical lens while maintaining the ratio of image height to maximum field of view, which is beneficial for lens miniaturization.

[0059] In an exemplary embodiment, the optical lens satisfies: 0.121 ≤ BFL / TTL ≤ 0.179. Preferably, 0.142 ≤ BFL / TTL ≤ 0.174. This design allows for a shorter back focal length of the optical lens, which, while ensuring sufficient space for optical element mounting and focusing, facilitates miniaturization.

[0060] In an exemplary embodiment, the optical lens satisfies: 0.008 ≤ D / H / FOV × 1° ≤ 0.015. Preferably, 0.009 ≤ D / H / FOV × 1° ≤ 0.013. This design balances the miniaturization of the optical lens with a large image sensor.

[0061] In an exemplary embodiment, the optical lens satisfies: 0.269 ≤ D / H / F × 1mm ≤ 0.767. Preferably, 0.317 ≤ D / H / F × 1mm ≤ 0.667. This design allows for a larger image height of the optical lens when the focal length is fixed.

[0062] In an exemplary embodiment, the optical lens satisfies: 0.41 ≤ (F×θ) / D ≤ 0.844. Preferably, 0.482 ≤ (F×θ) / D ≤ 0.734. This design allows for control of the light transmission diameter at the lens front end while maintaining a large field of view and short focal length, which is beneficial for lens miniaturization.

[0063] In an exemplary embodiment, the optical lens satisfies: -4.092 ≤ F1 / F ≤ -1.78. Preferably, -3.558 ≤ F1 / F ≤ -2.094. This design allows the focal length of the first lens to be negative, increasing the amount of light entering the rear system when the first lens receives and diffuses light backward.

[0064] In an exemplary embodiment, the optical lens satisfies: -0.27 ≤ F / F2 < 0. Further, -0.27 ≤ F / F2 ≤ -0.023. Preferably, -0.235 ≤ F / F2 ≤ -0.027. This design allows for control over the focal length of the second lens, enabling it to appropriately diffuse light and diverge the light collected at the front end, thereby facilitating aberration correction and increasing the field of view.

[0065] In an exemplary embodiment, the optical lens satisfies: -0.041 ≤ F / F3 < 0. Further, -0.041 ≤ F / F3 ≤ -0.019. Preferably, -0.039 ≤ F / F3 ≤ -0.022. This design allows for control over the focal length of the third lens, which can appropriately diffuse light and disperse the light collected at the front end, thereby facilitating aberration correction and increasing the field of view. Controlling this ratio range effectively compensates for the distortion of the first and second lenses in the front group of negative optical power lenses. Combined with the optical power balancing effect of the fourth and fifth lenses in the rear group of positive optical power lenses, it significantly reduces system distortion and improves imaging consistency at a large field of view.

[0066] In an exemplary embodiment, the optical lens satisfies: 1.578 ≤ F4 / F ≤ 3.279. Preferably, 1.856 ≤ F4 / F ≤ 2.851. This design avoids the fourth lens having too low an optical power, thus allowing the fourth lens to effectively counteract the excessive divergence effect accumulated by the first three negative optical power lenses, preventing excessive beam diffusion that could overload the positive optical power of the fifth lens. This design also avoids the fourth lens having too high an optical power, preventing premature excessive beam convergence and a surge in aberrations such as spherical aberration and field curvature. Based on this relationship, the optical power relationship between the front diverging lens and the rear converging lens can be balanced, ensuring image sharpness and optical path stability, and adapting to the specific optical performance requirements of the lens.

[0067] In an exemplary embodiment, the optical lens satisfies: 2.461 ≤ F5 / F ≤ 4.74. Preferably, 2.895 ≤ F5 / F ≤ 4.122. This design avoids a surge in aberrations such as spherical aberration and field curvature caused by excessive light convergence from the fifth lens, and also avoids optical path imbalance caused by excessive superposition of positive optical powers between the fifth and fourth lenses. The above relationship also avoids an excessively large F5 and an excessively small optical power of the fifth lens, ensuring that the fifth lens can receive light from the front of the system and counteract the divergence effect of the front group, enhancing the positive optical power of the system, ensuring normal beam convergence and imaging, and ultimately achieving aberration balance and stable image sharpness.

[0068] In an exemplary embodiment, the optical lens satisfies: 0.05 ≤ F1 / F2 ≤ 0.821. Preferably, 0.085 ≤ F1 / F2 ≤ 0.924. This design helps to expand the system's field of view, allowing the light collected at the system's front end to diverge appropriately, which is beneficial for correcting aberrations and improving the field of view.

[0069] In an exemplary embodiment, the optical lens satisfies: 0.082 ≤ F2 / F3 < 1. Preferably, 0.097 ≤ F2 / F3 ≤ 0.797. This design helps to expand the system's field of view, allowing the light collected at the system's front end to diverge appropriately, which is beneficial for correcting aberrations and improving the field of view.

[0070] In an exemplary embodiment, the optical lens satisfies: 0.424 ≤ |R7 / R6| ≤ 2.245. Preferably, 0.499 ≤ |R7 / R6| ≤ 1.952. This design allows diffused light from the system front to converge quickly, which helps to reduce the system size.

[0071] In an exemplary embodiment, the optical lens satisfies: 0.11 ≤ CT45 / TTL ≤ 0.286. Preferably, 0.129 ≤ CT45 / TTL ≤ 0.249. This design allows for a larger center distance between the fourth and fifth lenses. Combined with the positive optical power design of the fourth and fifth lenses, this not only reduces the angle of incidence, increases light transmittance and system illumination, but also facilitates smooth light transition, reduces system sensitivity, and improves resolution.

[0072] In an exemplary embodiment, the optical lens satisfies: 0.024 ≤ CT3 / TTL ≤ 0.06. Preferably, 0.028 ≤ CT3 / TTL ≤ 0.052. This design allows for a smaller center thickness of the third lens. Combined with the negative optical power design of the third lens and its location between the negative lens group (first and second lenses) and the positive lens group (fourth and fifth lenses), this results in less light refraction at the edge of the third lens. Furthermore, the central focusing characteristics of the positive lens group (fourth and fifth lenses) effectively reduce off-axis aberrations (such as coma and astigmatism).

[0073] In an exemplary embodiment, the optical lens satisfies: -0.115 ≤ CTG4 / F4 ≤ 0.184. Preferably, -0.1 ≤ CTG4 / F4 ≤ 0.16. This design not only allows the aperture stop to be placed close to the positive lens group (the fourth and fifth lenses), reducing the redundant length of the optical path, but also enables effective intervention of diverging beams, thereby achieving lens miniaturization.

[0074] In an exemplary embodiment, the optical lens satisfies: -0.035 ≤ CTG4 / TTL ≤ 0.056. Preferably, -0.03 ≤ CTG4 / TTL ≤ 0.049. When the aperture stop is located between the negative lens group (first lens, second lens, and third lens) and the positive lens group (fourth lens and fifth lens), based on the above relationship, the distance between the aperture stop and the positive lens group can be controlled, thereby intervening in diverging light at an early stage, thereby changing the aperture size of the positive lens group and the solid angle of light entering the positive lens group, and improving illumination.

[0075] In an exemplary embodiment, the optical lens satisfies: 0.528 ≤ |R9| / F5 ≤ 2.428. Preferably, 0.621 ≤ |R9| / F5 ≤ 2.111. This design allows the fifth lens to quickly converge the front-end light, which is beneficial for improving image quality.

[0076] In an exemplary embodiment, the optical lens satisfies: -0.038 ≤ (H / 2 - (θ / 2) × F) / ((θ / 2) × F) ≤ 0.016. Preferably, -0.033 ≤ (H / 2 - (θ / 2) × F) / ((θ / 2) × F) ≤ 0.014. This design reduces the difference between the ideal image height and the actual image height of the optical lens while keeping the maximum field of view constant, thereby reducing distortion.

[0077] In an exemplary embodiment, the optical lens satisfies: 1.187 ≤ D / H ≤ 2.4. Preferably, 1.397 ≤ D / H ≤ 2.087. This design allows D to be relatively large compared to H, enabling the first lens to capture more light from a wider field of view, avoiding insufficient light intake at the edges of the field of view due to excessive angles. This directly supports the high light throughput requirement and avoids problems such as shortened detection distance and decreased signal-to-noise ratio caused by insufficient light intake, ensuring the accuracy of long-distance obstacle recognition. The above relationship further avoids D being too large relative to H, thus preventing the size of the first lens from exceeding the limited installation space on the vehicle while meeting the high light throughput requirement. On the other hand, it prevents the aberration of the first three negative focal length lenses from being aggravated (excessive aberration will result in blurry imaging even under high light throughput), ensuring that the latter two positive focal length lenses can efficiently correct aberrations. Ultimately, this achieves the dual goals of high light throughput and clear imaging across the entire field of view, meeting the complex road condition perception requirements of vehicle-mounted LiDAR.

[0078] In an exemplary embodiment, the optical lens satisfies: 0.811 ≤ R5 / (CT3+R6) ≤ 1.599. Preferably, -0.954 ≤ R5 / (CT3+R6) ≤ 1.39. This design allows light to enter the optical system behind the third lens more smoothly, which helps to reduce the system's sensitivity and improve resolution.

[0079] In an exemplary embodiment, the optical lens satisfies: -18.581 ≤ (F1+F2+F3) / (F4+F5) ≤ -5.089. Preferably, -16.157 ≤ (F1+F2+F3) / (F4+F5) ≤ -5.987. The first, second, and third lenses, which have negative optical power, can be used to correct spherical aberration and coma, improving image quality. The fourth and fifth lenses, which have positive optical power, can quickly converge light. Through the above relationships, it is beneficial to improve performance such as astigmatism and distortion, and enhance the resolving power of the lens group.

[0080] In an exemplary embodiment, the optical lens satisfies: 0.079 ≤ (CT1 + CT12 + CT2) / TTL ≤ 0.394. Preferably, 0.093 ≤ (CT1 + CT12 + CT2) / TTL ≤ 0.343. This design allows for a smaller distance between the first side surface of the first lens and the second side surface of the second lens. After the first lens diverges the light, the second lens can better receive the light emitted from the first lens and further diverge it, contributing to lens miniaturization.

[0081] In an exemplary embodiment, the optical lens satisfies: -0.281 ≤ (F / R7) + (F / R6) ≤ 1.212. Preferably, -0.244 ≤ (F / R7) + (F / R6) ≤ 1.054. This design not only facilitates spherical aberration correction but also enables a smoother light transition, reducing system sensitivity.

[0082] In an exemplary embodiment, the optical lens satisfies: 23.967 ≤ FOV / F / 1°×1mm ≤ 66.605. Preferably, 28.196 ≤ FOV / F / 1°×1mm ≤ 57.917. This design achieves high resolution while maintaining the same image plane size.

[0083] In an exemplary embodiment, the optical lens satisfies: 0.003 ≤ CT34 / TTL ≤ 0.102. Preferably, 0.004 ≤ CT34 / TTL ≤ 0.089. This design reduces the distance between the negative lens group (first lens, second lens, and third lens) and the positive lens group (fourth lens and fifth lens), reducing imaging variations caused by factors such as temperature and humidity, and improving imaging stability.

[0084] In an exemplary embodiment, the optical lens satisfies: 1.017 ≤ F4 / CT45 ≤ 2.402. Preferably, 1.196 ≤ F4 / CT45 ≤ 2.089. This design allows the fourth lens to effectively converge the forward diverging light rays, causing the light to be deflected inward, which helps to reduce the rear port diameter of the system.

[0085] In an exemplary embodiment, the optical lens satisfies: 1.152 ≤ |R9| / CT45 ≤ 9.156. Preferably, 1.355 ≤ |R9| / CT45 ≤ 7.962. This design ensures that the value of R9 is appropriate, allowing light to smoothly enter the fifth lens from the fourth lens, and giving the fifth lens suitable refractive power. This, in turn, works with the fourth lens to optimize image quality over a wide field of view, balancing high light throughput and miniaturization. If |R9| / CT45 is too low, then |R9| is too small or CT45 is too large. If |R9| is too small, it means that the first side of the fifth lens is too curved, causing a sudden increase in the refractive power of the fifth lens and leading to increased aberrations. If CT45 is too large, it will result in an excessively long lens, which is not conducive to miniaturization. If |R9| / CT45 is too large, then |R9| is too large or CT45 is too small. If |R9| is too large, it means that the first side of the fifth lens is too flat, the refractive power of the fifth lens is insufficient, and it is difficult to correct the aberrations of the anterior group. If CT45 is too small, it will lead to an increase in aberrations and increase the difficulty of assembly.

[0086] In an exemplary embodiment, the optical lens satisfies: 1.132 ≤ D / D10 ≤ 2.375. Preferably, 1.332 ≤ D / D10 ≤ 2.065. This design allows the lens to form a structure that is larger in the front and smaller in the back, which helps to control aberrations at a large field of view, improves the image sharpness in the edge areas, and thus obtains a wider field of view.

[0087] In an exemplary embodiment, the optical lens satisfies: 1.509 ≤ D / D5 ≤ 3.166. Preferably, 1.775 ≤ D / D5 ≤ 2.753. This design allows the lens to form a structure that is larger in the front and smaller in the back, which helps to maintain high imaging quality while expanding the system's field of view, and is beneficial for obtaining a wider range of detection scenarios.

[0088] In an exemplary embodiment, the optical lens satisfies: -0.163 ≤ (R6 / F3) / (R7 / F4) ≤ 0.059. Preferably, -0.142 ≤ (R6 / F3) / (R7 / F4) ≤ 0.051. This design not only facilitates spherical aberration correction but also enables a smoother light transition, reducing system sensitivity.

[0089] In an exemplary embodiment, the optical lens satisfies: -0.856 ≤ (1 / F1 + 1 / F2 + 1 / F3) × F ≤ -0.428. Preferably, -0.744 ≤ (1 / F1 + 1 / F2 + 1 / F3) × F ≤ -0.504. This design, combined with the negative optical power characteristics of the first, second, and third lenses, allows the first, second, and third lenses to be used to correct spherical aberration and coma, thereby improving image quality.

[0090] In an exemplary embodiment, the optical lens satisfies: 0.504 ≤ (1 / F4 + 1 / F5) × F ≤ 0.99. Preferably, 0.593 ≤ (1 / F4 + 1 / F5) × F ≤ 0.861. This design, combined with the positive optical power characteristics of the fourth and fifth lenses, enables the fourth and fifth lenses to quickly converge light onto the image plane, thereby reducing the system length and the physical size of the optical lens, which is beneficial for miniaturizing the optical lens.

[0091] In an exemplary embodiment, the optical lens satisfies: -4.553 ≤ R1 / F1 + R2 / F1 ≤ -1.37. Preferably, -3.959 ≤ R1 / F1 + R2 / F1 ≤ -1.612. This design allows the first side surface of the first lens to have a larger radius of curvature, thereby expanding the incident angle of light, increasing the effective light-transmitting area, and improving the light transmission, thus enhancing the lens's imaging capability in low-light environments. Furthermore, based on the above relationship, the central radii of curvature of the first and second sides of the first lens can be optimized to reduce light loss, improve imaging uniformity, provide more sufficient light resources for subsequent optical systems, and achieve high light throughput.

[0092] In an exemplary embodiment, the optical lens satisfies: -13.734 ≤ R1×R2 / ((R2-R1)+CT1) / 1mm ≤ -5.591. Preferably, -11.943 ≤ R1×R2 / ((R2-R1)+CT1) / 1mm ≤ -6.578. This design facilitates achieving a small focal length for the first lens, allowing it to appropriately diverge the front-end light, thus enabling a large field of view.

[0093] In an exemplary embodiment, the optical lens satisfies: -1.274 ≤ R7 / F4 + R8 / F4 ≤ 0.511. Preferably, -1.108 ≤ R7 / F4 + R8 / F4 ≤ 0.444. This design allows the first side of the fourth lens to obtain a larger central radius of curvature, thereby expanding the incident angle of light and increasing the effective light-gathering area, thus improving the lens's light-gathering capability in low-light environments.

[0094] In an exemplary embodiment, the optical lens satisfies: 4.927 ≤ R7×R8 / ((R8-R7)+CT4) / 1mm ≤ 9.198. Preferably, 5.797 ≤ R7×R8 / ((R8-R7)+CT4) / 1mm ≤ 7.998. This design allows the fourth lens to have a positive and relatively small focal length, effectively balancing and correcting aberrations such as field curvature and astigmatism (especially aberrations caused by wide-angle FOV), ensuring clear imaging and minimal distortion over a wide field of view. Furthermore, the above relationship also helps the fourth lens to converge light more efficiently. The fourth lens can work in conjunction with the front and rear lenses to balance the total optical power of the system, avoiding excessive light convergence and helping to reduce system sensitivity.

[0095] In an exemplary embodiment, the optical lens satisfies |F1| < |F2|. The first lens has negative optical power, which can effectively disperse light, providing a more uniform light distribution for subsequent lenses and ensuring high relative illumination. The second lens also has negative optical power. By controlling |F1| < |F2|, it helps to expand the system's field of view and obtain a wider detection scene while maintaining high imaging quality. Specifically, |F1| < |F2| means that the first lens has stronger optical power (smaller absolute focal length). The first lens can efficiently gather divergent light rays from the edge of a large field of view, initially reducing the propagation angle difference between edge and center rays, thereby reducing initial distortion. |F1| < |F2| also means that the second lens has slightly weaker optical power (larger absolute focal length). The second lens can receive the light path corrected by the first lens, thereby further optimizing the light angle with a smoother adjustment, avoiding abrupt changes in the light path due to excessive single correction force, and thus preventing the generation of new distortions (such as local field curvature or astigmatism). This strong-weak stepped correction method ensures that light rays at the edge of the large field of view are effectively constrained, while avoiding overcorrection that could disrupt the optical path balance. This lays a low-distortion optical path foundation for the secondary optimization of the third lens (negative optical power) and the focusing of the fourth and fifth lenses (positive optical power), ultimately helping the system maintain a low-distortion state over a wide field of view and ensuring the detection accuracy of the lidar. By controlling the first and second lenses to satisfy |F1| < |F2|, the first lens can compress the diverging optical path over a large field of view with a stronger optical power, while the second lens can gently adjust the optical path with a slightly weaker optical power. Together, they provide the third lens with a stable output angle and controllable divergence. This stable optical path input directly provides a clear connection benchmark for the subsequent connection of the third and fourth lenses, ensuring that light can be smoothly transmitted to the fourth lens and avoiding optical path disconnection or aberration superposition. This achieves the compression of initial distortion by the first and second lenses, and the aberration-free connection of light rays between the third and fourth lenses.

[0096] In an exemplary embodiment, the optical lens satisfies |F2| < |F3|. The second lens has negative optical power, which can effectively disperse light, providing a more uniform light distribution for subsequent lenses and ensuring high relative illumination. The third lens has negative optical power, and by controlling |F2| < |F3|, it helps to expand the system's field of view and obtain a wider detection scene, while maintaining high imaging quality.

[0097] In an exemplary embodiment, the optical lens satisfies: 0.449 ≤ |R10| / F5 ≤ 20.275. Preferably, 0.528 ≤ |R10| / F5 ≤ 17.63. This ratio is within a reasonable range, enhancing the light-gathering capability of the fifth lens. Combined with the optical path divergence compensation of the second lens and the L3 negative power lens, it effectively shortens the system's back focal length, adapting to the compact installation requirements of lidar; simultaneously, it avoids aberration degradation caused by excessively steep or gentle curvature, ensuring the accuracy and stability of laser ranging.

[0098] In an exemplary embodiment, the optical lens satisfies: -16.409 ≤ F3 / F5 ≤ -7.531. Preferably, -14.269 ≤ F3 / F5 ≤ -7.927. The diverging effect of the third lens pre-distributes the optical path deflection load, reducing the adjustment margin for subsequent lens groups. Combined with the converging characteristics of the fifth lens, the light transmission path is compressed, achieving a short back focal length design. This ratio range avoids aberration accumulation caused by optical focal length overload, ensuring the ranging accuracy and beam collimation of the lidar within a compact structure.

[0099] In an exemplary embodiment, the optical lens satisfies: -53.39 ≤ F3 / BFL ≤ -17.373. Preferably, -46.426 ≤ F3 / BFL ≤ -20.439. By constraining the correlation ratio between the optical power of the third lens and the system's back focal length, and utilizing the optical path divergence characteristics of the third lens, the light deflection pressure of subsequent lens groups is dispersed in advance. Combined with the converging effect of the positive optical power lenses of the fourth and fifth lenses, the light transmission distance is significantly compressed, achieving a short back focal length design. This ratio range can avoid excessive aberration accumulation, ensuring the beam collimation and ranging accuracy of the lidar in a compact structure.

[0100] The optical lens according to the above embodiments of this application can employ multiple lenses, such as the five lenses mentioned above. By rationally allocating the optical parameters of each lens, the optical lens achieves small aperture, miniaturization, high resolution, low sensitivity, large field of view, low distortion, and high illumination, and can be well matched with, for example, automotive chips without producing vignetting. This optical lens exhibits excellent temperature performance, with minimal changes in imaging effect at high and low temperatures, and stable image quality. Therefore, the optical lens according to the above embodiments of this application can better meet the requirements of, for example, automotive applications.

[0101] Specific embodiments of the optical lens applicable to the above-described embodiments are further described below with reference to the accompanying drawings.

[0102] Example 1

[0103] The following is for reference Figure 1 Describes an optical lens according to Embodiment 1 of this application. For example... Figure 1 As shown, the optical lens, along the optical axis from the first side to the second side, includes: a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, and a fifth lens L5. An aperture stop STO can be positioned between the third lens L3 and the fourth lens L4; all lens surfaces are free of inflection points.

[0104] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has negative optical power, its first side surface S3 is convex, and its second side surface S4 is concave. The third lens L3 has negative optical power, its first side surface S5 is concave, and its second side surface S6 is convex. The fourth lens L4 has positive optical power, its first side surface S7 is convex, and its second side surface S8 is convex. The fifth lens L5 has positive optical power, its first side surface S9 is convex, and its second side surface S10 is concave. An image plane IMA is provided on the second side of the optical lens. When the IMA is the imaging plane, light from the object passes through each surface sequentially and is finally imaged onto the IMA. When the IMA is the image source plane, light from the IMA passes through each surface sequentially and is finally projected onto the object.

[0105] Table 1 shows the basic parameters of the optical lens of Example 1.

[0106] Table 1

[0107]

[0108] In Embodiment 1, the first side surface S7 and the second side surface S8 of the fourth lens L4, and the first side surface S9 and the second side surface S10 of the fifth lens L5 are all aspherical surfaces. The surface shape of each aspherical surface can be defined using, but is not limited to, the following aspherical surface formula:

[0109]

[0110] Where x is the distance vector from the vertex of the aspherical surface at a height of h along the optical axis; c is the paraxial curvature of the aspherical surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the 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 gives the conic coefficient k and higher-order coefficients A4, A6, A8, A10, A12, A14 and A16 that can be used for the aspherical surfaces S7, S8, S9 and S10 in Example 1.

[0111] Table 2

[0112] Face number k A4 A6 A8 A10 A12 A14 A16 S7 -2.3931 -0.0001 1.7293E-06 -1.5007E-07 1.0488E-09 4.9693E-11 -2.3145E-13 0 S8 -0.63344 0.0001 -5.0818E-08 -4.5376E-08 -1.4594E-09 -2.6127E-11 1.8801E-12 0 S9 0.80138 -0.0002 6.9526E-06 -4.3328E-07 3.1750E-08 -1.1879E-09 1.4209E-11 0 S10 200 0.0006 6.1305E-06 1.2771E-06 -4.8358E-08 2.4997E-10 2.4852E-11 0

[0113] like Figure 11 The optical lens of Example 1 has an MTF value exceeding 0.633 at a spatial frequency of 25 lp / mm (period / mm); in terms of diffraction ingress energy, the spot energy accounts for more than 96.102% of the total light energy within a 15 μm diameter circle on the image plane. The optical lens given in Example 1 has high resolving power. Figure 12 The distortion in Example 1 is relatively small, with a maximum of 0.67%.

[0114] Example 2

[0115] The following is for reference Figure 2 Describes an optical lens according to Embodiment 2 of this application. For example... Figure 2 As shown, the main difference between this embodiment and Embodiment 1 is that the optical parameters such as the radius of curvature and lens thickness of each lens surface are different.

[0116] Table 3 shows the basic parameters of the optical lens in Example 2.

[0117] Table 3

[0118]

[0119] In Example 2, the first side surface S7 of the fourth lens L4, the second side surface S8 of the fourth lens L4, the first side surface S9 of the fifth lens L5, and the second side surface S10 of the fifth lens L5 are all aspherical surfaces. Table 4 gives the conic coefficient k and higher-order coefficients that can be used for each aspherical surface S7, S8, S9, and S10 in Example 2.

[0120] Table 4

[0121] Face number k A4 A6 A8 A10 A12 A14 A16 S7 -1.9656 -0.0001 3.2049E-07 -9.3328E-08 6.6643E-10 -3.6085E-12 1.0328E-12 0 S8 -0.69424 0.0001 -3.8161E-06 3.2931E-08 -1.6170E-10 -2.7955E-11 1.0983E-12 0 S9 0.3376 -0.0001 7.7290E-06 -3.5248E-07 2.8221E-08 -1.2624E-09 2.8333E-11 -2.9509E-13 S10 -200 0.0009 -3.6432E-06 1.3507E-06 -3.7927E-08 9.3067E-10 -2.5337E-11 1.7391E-13

[0122] The optical lens of Example 2 has an MTF value exceeding 0.403 at a spatial frequency of 25 lp / mm (period / mm). Regarding diffraction incident energy, the spot energy accounts for over 92.623% of the total light energy within a 15 μm diameter circle on the image plane.

[0123] The optical lens given in Example 2 has high resolution.

[0124] Example 3

[0125] The following is for reference Figure 3 Describes an optical lens according to Embodiment 3 of this application. For example... Figure 3 As shown, the main difference between this embodiment and Embodiment 1 is that the optical parameters such as the radius of curvature and lens thickness of each lens surface are different.

[0126] Table 5 shows the basic parameters of the optical lens of Example 3.

[0127] Table 5

[0128]

[0129]

[0130] In Example 3, the first side surface S7 of the fourth lens L4, the second side surface S8 of the fourth lens L4, the first side surface S9 of the fifth lens L5, and the second side surface S10 of the fifth lens L5 are all aspherical surfaces. Table 6 gives the conic coefficient k and higher-order coefficients that can be used for each aspherical surface S7, S8, S9, and S10 in Example 3.

[0131] Table 6

[0132] Face number k A4 A6 A8 A10 A12 A14 A16 S5 -3.2815 -0.0001 4.0586E-06 -8.8972E-08 5.5609E-10 0.0000E+00 0 0 S6 -0.33861 0.0000 2.2667E-06 -1.5144E-08 -3.5257E-10 0.0000E+00 0 0 S9 0.8357 -0.0002 6.9430E-06 -4.5715E-07 2.9897E-08 -1.1858E-09 2.4269E-11 -2.1048E-13 S10 200 0.0006 -1.0767E-06 8.9628E-07 -2.7478E-08 9.1979E-10 -2.4922E-11 5.193E-13

[0133] like Figure 13 As shown, the optical lens of Example 3 has an MTF value exceeding 0.725 at a spatial frequency of 25 lp / mm (period / mm). Regarding diffraction incident energy, the spot energy accounts for over 97.706% of the total light energy within a 15 μm diameter circle on the image plane. The optical lens provided in Example 3 exhibits high resolution. Figure 14 As shown, the distortion in Example 1 is relatively small, with a maximum of 0.31%.

[0134] Example 4

[0135] The following is for reference Figure 4 Describes an optical lens according to Embodiment 4 of this application. For example... Figure 4As shown, the main difference between this embodiment and embodiment 1 is that the optical parameters such as the radius of curvature and lens thickness of each lens surface are different; the first side surface S5 of the third lens L3 is convex and the second side surface S6 is concave; the second side surface S10 of the fifth lens L5 is convex.

[0136] Table 7 shows the basic parameters of the optical lens in Example 4.

[0137] Table 7

[0138]

[0139]

[0140] In Example 4, the first side surface S7 of the fourth lens L4, the second side surface S8 of the fourth lens L4, the first side surface S9 of the fifth lens L5, and the second side surface S10 of the fifth lens L5 are all aspherical surfaces. Table 8 gives the conic coefficient k and higher-order coefficients that can be used for each aspherical surface S7, S8, S9, and S10 in Example 4.

[0141] Table 8

[0142] Face number k A4 A6 A8 A10 A12 A14 A16 S7 -3.95 0.0003 -5.5632E-06 1.5610E-06 1.5162E-07 2.1367E-11 -8.6418E-10 0 S8 0.014123 0.0003 -2.4023E-05 2.9503E-06 9.7139E-08 -8.9919E-09 2.7867E-10 0 S9 -0.64044 -0.0005 1.6396E-05 -8.9366E-07 2.1169E-08 -1.2020E-09 4.0516E-11 -6.4072E-13 S10 10.694 0.0006 -1.6379E-05 1.7301E-06 -1.2620E-07 4.2957E-09 -5.0829E-11 -9.7664E-14

[0143] The optical lens of Example 4 has an MTF value exceeding 0.616 at a spatial frequency of 25 lp / mm (period / mm). Regarding diffraction incident energy, the spot energy accounts for over 91.873% of the total light energy within a 15 μm diameter circle on the image plane. The optical lens provided in Example 4 exhibits high resolution.

[0144] Example 5

[0145] The following is for reference Figure 5 Describes an optical lens according to Embodiment 5 of this application. For example... Figure 5 As shown, the main differences between this embodiment and Embodiment 1 are: the optical parameters such as the radius of curvature and lens thickness of each lens surface are different; the first side surface S3 of the second lens L2 is concave and the second side surface S4 is convex; the first side surface S5 of the third lens L3 is convex and the second side surface S6 is concave; the first side surface S9 of the fifth lens L5 is concave and the second side surface S10 is convex. The second side surface S8 of the fourth lens L4 has at least one inflection point.

[0146] Table 9 shows the basic parameters of the optical lens of Example 5.

[0147] Table 9

[0148]

[0149] In Example 5, the first side surface S7 of the fourth lens L4, the second side surface S8 of the fourth lens L4, the first side surface S9 of the fifth lens L5, and the second side surface S10 of the fifth lens L5 are all aspherical surfaces. Table 10 gives the conic coefficient k and higher-order coefficients that can be used for each aspherical surface S7, S8, S9, and S10 in Example 5.

[0150] Table 10

[0151] Face number k A4 A6 A8 A10 A12 A14 A16 S7 -0.40062 0.0000 -6.2949E-06 1.7460E-08 1.0168E-08 -1.1222E-10 0 0 S7 1.0972 0.0000 2.3292E-05 -1.9751E-06 5.7329E-08 -2.3041E-10 0 0 S9 14.929 -0.0020 8.1923E-05 -1.2586E-05 4.4200E-07 -2.9707E-09 0 0 S10 0.45006 0.0000 -1.9939E-05 7.4678E-07 -2.6705E-08 8.6378E-10 0 0

[0152] The optical lens of Example 5 has an MTF value exceeding 0.3 at a spatial frequency of 25 lp / mm (period / mm). Regarding diffraction incident energy, the spot energy accounts for over 81.777% of the total light energy within a 15 μm diameter circle on the image plane. The optical lens provided in Example 5 exhibits high resolution.

[0153] Example 6

[0154] The following is for reference Figure 6 Describes an optical lens according to Embodiment 6 of this application. For example... Figure 6 As shown, the main difference between this embodiment and Embodiment 1 is that the optical parameters such as the radius of curvature and lens thickness of each lens surface are different.

[0155] Table 11 shows the basic parameters of the optical lens of Example 6.

[0156] Table 11

[0157]

[0158] In Example 6, the first side surface S7 of the fourth lens L4, the second side surface S8 of the fourth lens L4, the first side surface S9 of the fifth lens L5, and the second side surface S10 of the fifth lens L5 are all aspherical surfaces. Table 12 gives the conic coefficient k and higher-order coefficients that can be used for each aspherical surface S7, S8, S9, and S10 in Example 5.

[0159] Table 12

[0160] Face number k A4 A6 A8 A10 A12 A14 A16 S7 -3.6716 -0.0001 3.4886E-06 -1.5928E-07 -2.8595E-09 1.7659E-10 0 0 S8 -0.27481 0.0000 -1.1486E-06 -1.0471E-07 3.5860E-09 -4.1054E-11 0 0 S9 0.74907 -0.0003 4.2564E-06 -5.4129E-07 1.9787E-08 -1.3449E-09 2.417E-11 -1.6982E-13 S10 -23.021 0.0006 -2.7464E-06 3.6353E-07 -3.9487E-08 1.0052E-09 -4.8435E-11 1.1415E-12

[0161] The optical lens of Example 6 has an MTF value exceeding 0.65 at a spatial frequency of 25 lp / mm (period / mm). Regarding diffraction incident energy, the spot energy accounts for over 92.819% of the total light energy within a 15 μm diameter circle on the image plane. The optical lens provided in Example 6 exhibits high resolution.

[0162] Example 7

[0163] The following is for reference Figure 7Describes an optical lens according to Embodiment 7 of this application. For example... Figure 7 As shown, the main difference between this embodiment and embodiment 1 is that the optical parameters such as the radius of curvature and lens thickness of each lens surface are different; the first side surface S5 of the third lens L3 is convex and the second side surface S6 is concave; the second side surface of the fifth lens L5 is convex.

[0164] Table 13 shows the basic parameters of the optical lens of Example 7.

[0165] Table 13

[0166]

[0167] In Example 7, the first side surface S7 of the fourth lens L4, the second side surface S8 of the fourth lens L4, the first side surface S9 of the fifth lens L5, and the second side surface S10 of the fifth lens L5 are all aspherical surfaces. Table 14 gives the conic coefficient k and higher-order coefficients that can be used for each aspherical surface S7, S8, S9, and S10 in Example 7.

[0168] Table 14

[0169]

[0170] The optical lens of Example 7 has an MTF value exceeding 0.628 at a spatial frequency of 25 lp / mm (period / mm). Regarding diffraction incident energy, the spot energy accounts for over 89.578% of the total light energy within a 15 μm diameter circle on the image plane. The optical lens provided in Example 7 exhibits high resolution.

[0171] Example 8

[0172] The following is for reference Figure 8 Describes an optical lens according to Embodiment 8 of this application. For example... Figure 8 As shown, the main difference between this embodiment and embodiment 1 is that the optical parameters such as the radius of curvature and lens thickness of each lens surface are different; the first side surface S3 of the second lens L2 is concave, and the second side surface S4 of the second lens L2 is convex.

[0173] Table 15 shows the basic parameters of the optical lens of Example 8.

[0174] Table 15

[0175]

[0176] In Example 8, the first side surface S7 of the fourth lens L4, the second side surface S8 of the fourth lens L4, the first side surface S9 of the fifth lens L5, and the second side surface S10 of the fifth lens L5 are all aspherical surfaces. Table 16 gives the conic coefficient k and higher-order coefficients that can be used for each aspherical surface S7, S8, S9, and S10 in Example 8.

[0177] Table 16

[0178] Face number k A4 A6 A8 A10 A12 A14 A16 S7 -2.1917 -6.3565E-05 2.0398E-06 -1.4104E-07 8.2937E-12 -3.0831E-11 8.6576E-13 0 S8 -1.8628 5.5774E-05 -1.5541E-06 -7.4113E-08 -1.0246E-09 5.1022E-12 -3.8587E-13 0 S9 0.5981 -1.6132E-04 1.2156E-05 -3.8780E-07 1.9992E-08 -1.7162E-09 2.2813E-11 0 S10 -199.1300 6.8382E-04 1.9007E-05 1.0599E-06 -8.3515E-08 -8.5334E-10 4.8648E-11 0

[0179] The optical lens of Example 8 has an MTF value exceeding 0.524 at a spatial frequency of 25 lp / mm (period / mm). Regarding diffraction incident energy, the spot energy accounts for over 86.939% of the total light energy within a 15 μm diameter circle on the image plane. The optical lens provided in Example 8 exhibits high resolution.

[0180] Example 9

[0181] The following is for reference Figure 9 Describes an optical lens according to Embodiment 9 of this application. For example... Figure 9 As shown, the main difference between this embodiment and embodiment 1 is that the optical parameters such as the radius of curvature and lens thickness of each lens surface are different; the first side surface S3 of the second lens L2 is concave, and the second side surface S4 of the second lens L2 is convex.

[0182] Table 17 shows the basic parameters of the optical lens of Example 9.

[0183] Table 17

[0184]

[0185]

[0186] In Example 9, the first side surface S7 of the fourth lens L4, the second side surface S8 of the fourth lens L4, the first side surface S9 of the fifth lens L5, and the second side surface S10 of the fifth lens L5 are all aspherical surfaces. Table 18 gives the conic coefficient k and higher-order coefficients that can be used for each aspherical surface S7, S8, S9, and S10 in Example 9.

[0187] Table 18

[0188] Face number k A4 A6 A8 A10 A12 A14 A16 S7 -2.0762 -5.6600E-05 1.6790E-06 -1.7410E-07 -1.2230E-09 -2.1884E-11 7.5600E-12 0 S8 -2.2860 6.4577E-05 -1.8698E-06 -9.6646E-08 -1.5364E-09 2.4356E-11 2.7495E-12 0 S9 0.6187 -1.4828E-04 1.1977E-05 -4.1106E-07 1.9995E-08 -1.6810E-09 2.4951E-11 0 S10 7.9548 6.4987E-04 1.5190E-05 1.1099E-06 -7.9863E-08 -7.7864E-10 4.6488E-11 0

[0189] The optical lens of Example 9 has an MTF value exceeding 0.6 at a spatial frequency of 25 lp / mm (period / mm). Regarding diffraction incident energy, the spot energy accounts for over 91% of the total light energy within a 15 μm diameter circle on the image plane. The optical lens provided in Example 9 exhibits high resolution.

[0190] Comparative Example 1

[0191] The following is for reference Figure 10 Describes the optical lens according to Comparative Example 1 of this application. For example... Figure 14 As shown, the main differences between this comparative example and Example 1 are: the optical parameters such as the radius of curvature and lens thickness of each lens surface are different; the optical power of the third lens L3 is positive; and the first side surface S9 of the fifth lens L5 has at least one inflection point.

[0192] Table 19 shows the basic parameters of the optical lens in Comparative Example 1.

[0193] Table 19

[0194]

[0195] In Comparative Example 1, the first side surface S9 and the second side surface S10 of the fifth lens L5 are both aspherical surfaces. Table 20 gives the conic coefficient k and higher-order coefficients that can be used for each aspherical surface S9 and S10 in Comparative Example 1.

[0196] Table 20

[0197] Face number k A4 A6 A8 A10 A12 A14 A16 S9 1.8742 2.7019E-04 -2.0520E-05 -8.8376E-07 4.7245E-08 -4.5251E-10 -2.3633E-12 -1.2807E-13 S10 -1.3512 -2.3147E-04 1.6508E-05 6.4391E-07 -2.6793E-08 1.5010E-10 -7.0056E-12 1.5671E-13

[0198] like Figure 15 As shown, the optical lens of Comparative Example 1 exhibits significant distortion, with a maximum distortion of 21.3%. The main reason for the poor image quality of the optical lens in Comparative Example 1 is that the optical power of the third lens L3 is positive, resulting in F3 / F > -6.024, F2 / F3 < 0.06, and F1+F2+F3) / (F4+F5) > -2.501. Therefore, the optical lens of Comparative Example 1 cannot effectively correct aberrations.

[0199] Table 21 provides the basic parameters of the optical lenses in Examples 1-9 and Comparative Example 1. The unit for FOV in the table is °, the unit for θ is rad, and the units for other parameters are mm.

[0200] Table 21

[0201] Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 Example 9 Comparative Example 1 F 3.101 3.472 3.475 3.438 4.401 4.311 3.443 4.406 4.433 4.018 ENPD 2.215 3.472 2.896 2.456 3.143 3.080 2.460 3.147 3.167 2.870 TTL 29.895 29.432 30.001 24.823 30.302 29.477 25.308 30.073 30.166 28.679 FOV 179.600 160.000 160.000 160.000 125.000 128.000 160.000 125.000 125.000 160 θ 3.135 2.793 2.793 2.793 2.182 2.234 2.793 2.182 2.182 2.793 H 9.664 9.647 9.749 9.636 9.736 9.642 9.667 9.372 9.353 8.840 CT34 2.658 0.139 2.451 0.208 1.545 1.461 0.099 0.753 0.753 2.533

[0202] In summary, the relationships in Examples 1-9 and Comparative Example 1 satisfy the relationships shown in Table 22.

[0203] Table 22

[0204]

[0205]

[0206] This application also provides an electronic device, which includes a first device and / or a second device. The first device may be, for example, a lidar transmitter, and the second device may be, for example, a lidar receiver. The first device may include the optical lens and light source as described in the exemplary embodiments above. The light source is located on the second side of the optical lens, and the light emitted by the light source is projected onto the first side of the optical lens after passing through the optical lens, forming an image or illuminating an area on the first side. The second device may include the optical lens as described in the exemplary embodiments above and an imaging element for converting the optical image formed by the optical lens into an electrical signal. The imaging element is disposed on the second side of the optical lens (e.g., disposed on the imaging surface), and the imaging element may be, for example, a photocoupled device (CCD) or a complementary metal oxide semiconductor device (CMOS). The light from the first side is imaged on the second side after passing through the optical lens.

[0207] 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, Along the optical axis, from the first side to the second side, the following are included in sequence: A first lens with negative optical power, wherein the first side surface of the first lens is convex and the second side surface of the first lens is concave; A second lens with negative optical power; A third lens with negative optical power; A fourth lens with positive optical power, wherein the first side surface of the fourth lens is convex and the second side surface of the fourth lens is convex; A fifth lens with positive optical power; The optical lens has five lenses with optical power. The optical lens satisfies: |F1|<|F2|; Wherein, F1 is the focal length of the first lens, and F2 is the focal length of the second lens.

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

3. The optical lens according to claim 1 or 2, characterized in that, The optical lens satisfies at least one of the following relationships: 0.85≤F / ENPD≤1.61, 5.784≤TTL / F≤11.086, 0.014≤TTL / H / FOV×1°≤0.03, 0.008≤D / H / FOV×1°≤0.015, 0.269≤D / H / F×1mm≤0.767, 0.41≤(F×θ) / D≤0.844, 1.187≤D / H≤2.4, -0.038≤(H / 2-(θ / 2)×F) / ((θ / 2)×F)≤0.016, 1.132≤D / D10≤2.375, 1.509≤D / D5≤3.166 or 23.967≤FOV / F / 1°×1mm≤66.605; Wherein, F is the focal length of the optical lens, ENPD is the entrance pupil diameter of the optical lens, TTL is the total optical length of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, FOV is the maximum field of view of the optical lens, BFL is the optical back focal length of the optical lens, D is the aperture corresponding to the maximum field of view of the optical lens on the first side of the first lens, θ is the radian value of the maximum field of view of the optical lens, D10 is the aperture corresponding to the maximum field of view of the optical lens on the second side of the fifth lens, and D5 is the aperture corresponding to the maximum field of view of the optical lens on the first side of the third lens.

4. The optical lens according to claim 1 or 2, characterized in that, The optical lens satisfies at least one of the following relationships: -4.092≤F1 / F≤-1.78, -4.553≤R1 / F1+R2 / F1≤-1.37 or -13.734≤R1×R2 / ((R2-R1)+CT1) / 1mm≤-5.591; Wherein, F1 is the focal length of the first lens, F is the focal length of the optical lens, R1 is the central radius of curvature of the first side of the first lens, R2 is the central radius of curvature of the second side of the first lens, and CT1 is the central thickness of the first lens.

5. The optical lens according to claim 1 or 2, characterized in that, The optical lens satisfies: -0.27≤F / F2<0; Wherein, F2 is the focal length of the second lens, and F is the focal length of the optical lens.

6. The optical lens according to claim 1 or 2, characterized in that, The optical lens satisfies at least one of the following relationships: -0.041≤F / F3<0, 0.024≤CT3 / TTL≤0.06, or 0.811≤R5 / (CT3+R6)≤1.599; Wherein, F3 is the focal length of the third lens, F is the focal length of the optical lens, CT3 is the center thickness of the third lens, TTL is the total optical length of the optical lens, R5 is the center radius of curvature of the first side of the third lens, and R6 is the center radius of curvature of the second side of the third lens.

7. The optical lens according to claim 1 or 2, characterized in that, The optical lens satisfies at least one of the following relationships: 1.578≤F4 / F≤3.279, -1.274≤R7 / F4+R8 / F4≤0.511 or 4.927≤R7×R8 / ((R8-R7)+CT4) / 1mm≤9.198; Wherein, F4 is the focal length of the fourth lens, F is the focal length of the optical lens, R7 is the center radius of curvature of the first side of the fourth lens, R8 is the center radius of curvature of the second side of the fourth lens, and CT4 is the center thickness of the fourth lens.

8. The optical lens according to claim 1 or 2, characterized in that, The optical lens satisfies at least one of the following relationships: 2.461≤F5 / F≤4.74 or 0.528≤|R9| / F5≤2.428; Wherein, F5 is the focal length of the fifth lens, F is the focal length of the optical lens, and R9 is the center radius of curvature of the first side surface of the fifth lens.

9. The optical lens according to claim 1 or 2, characterized in that, The optical lens satisfies at least one of the following relationships: 1≤F / ENPD≤1.4, 6.805≤TTL / F≤9.64, 0.016≤TTL / H / FOV≤0.026, 0.142≤BFL / TTL≤0.174, 0.009≤D / H / FOV≤0.013, 0.317≤D / H / F≤0.667, 0.482≤(F×θ) / D≤0.734, -3.558≤F1 / F≤-2.094, -0.235≤F / F2≤-0.027, -0.039≤F / F3≤-0.022, 1.856≤F4 / F≤2.851, 2.895≤F5 / F≤4.122 , 0.059≤F1 / F2≤0.714, 0.097≤F2 / F3≤0.797, 0.499≤|R7 / R6|≤1.952, 0.129≤CT45 / TTL≤0.249, 0.028≤CT3 / TTL≤0.052, -0.1≤CTG4 / F4≤0.16, -0. 03≤CTG4 / TTL≤0.049, 0.621≤|R9| / F5≤2.111, -0.033≤(H / 2-(θ / 2)×F) / ( (θ / 2)×F)≤0.014, 1.397≤D / H≤2.087, 0.954≤R5 / (CT3+R6)≤1.39, -16.15 7≤(F1+F2+F3) / (F4+F5)≤-5.987, 0.093≤(CT1+CT12+CT2) / TTL≤0.343, -0.244≤(F / R7)+(F / R6)≤1.054, 28.196≤FOV / F≤57.917, 0.004≤CT34 / TT L≤0.089, 1.196≤F4 / CT45≤2.089, 1.355≤|R9| / CT45≤7.962, 1.332≤D1 / D10≤2.065, 1.775≤D1 / D5≤2.753, -0.142≤(R6 / F3) / (R7 / F4)≤0.051, -0. 744≤(1 / F1+1 / F2+1 / F3)×F≤-0.504, 0.593≤(1 / F4+1 / F5)×F≤0.861,-3. 959≤R1 / F1+R2 / F1≤-1.612, -11.943≤R1×R2 / ((R2-R1)+CT1)≤-6.578, -1 .108≤R7 / F4+R8 / F4≤0.444, 5.797≤R7×R8 / ((R8-R7)+CT4)≤7.998, 0.528 ≤|R10| / F5≤17.63, -14.269≤F3 / F5≤-7.927 or -46.426≤F3 / BFL≤-20.439; Wherein, F is the focal length of the optical lens, ENPD is the entrance pupil diameter of the optical lens, TTL is the total optical length of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, FOV is the maximum field of view of the optical lens, BFL is the optical back focal length of the optical lens, θ is the radian value of the maximum field of view of the optical lens, F1 is the focal length of the first 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, F5 is the focal length of the fifth lens, R1 is the central radius of curvature of the first side surface of the first lens, R2 is the central radius of curvature of the second side surface of the first lens, R5 is the central radius of curvature of the first side surface of the third lens, R6 is the central radius of curvature of the second side surface of the third lens, R7 is the central radius of curvature of the first side surface of the fourth lens, and R8 is the central radius of curvature of the second side surface of the fourth lens. R9 is the center radius of curvature of the first side surface of the fifth lens, CT1 is the center thickness of the first lens, CT12 is the center distance between the first lens and the second lens, CT2 is the center thickness of the second lens, CT3 is the center thickness of the third lens, CT34 is the center distance between the third lens and the fourth lens, CT4 is the center thickness of the fourth lens, CT45 is the center distance between the fourth lens and the fifth lens, CTG4 is the center distance between the aperture stop and the first side surface of the fourth lens, D is the aperture corresponding to the maximum field of view of the optical lens on the first side surface of the first lens, D5 is the aperture corresponding to the maximum field of view of the optical lens on the first side surface of the third lens, and D10 is the aperture corresponding to the maximum field of view of the optical lens on the second side surface of the fifth lens.

10. An electronic device, characterized in that, include: Optical lens according to any one of claims 1 to 9; as well as At least one of an imaging element and a light source; The imaging element is used to convert the optical image or optical information formed by the optical lens into an electrical signal; The light source is located on the second side of the optical lens. The light emitted by the light source is projected onto the first side of the optical lens after passing through the optical lens, and forms an image or illuminated area on the first side of the optical lens.

Images