Optical lens and electronic device

Abstract

The application discloses an optical lens and an electronic device, and relates to the field of optical elements. The optical lens comprises, in sequence from a first side to a second side along an optical axis, a first lens with positive optical power; a second lens with positive optical power, the first side of the second lens is a concave surface, and the second side of the second lens is a convex surface; a third lens with positive optical power; a fourth lens with negative optical power; a fifth lens with positive optical power, the first side of the fifth lens is a convex surface, and the second side of the fifth lens is a convex surface; a sixth lens with negative optical power, the first side of the sixth lens is a concave surface; the number of lenses with optical power in the optical lens is six; the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens are all full-glass spherical lenses; and the number of lenses with optical power in the optical lens is six. The optical lens has high light flux and large aperture number, high resolving power, high imaging quality, high stability, and can be miniaturized.

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] With the advancement of intelligent driving technology, advanced intelligent driving has gradually entered the public eye, and the solutions for intelligent driving are relatively open and transparent, namely visual perception and radar technology. Onboard optical lenses play a crucial role in long-distance detection and high-performance visual imaging, maintaining stable and efficient performance output even in low-cost, small-space, and harsh environments. For example, on highways, Advanced Driver-Assistance Systems (ADAS) use forward-facing cameras to automatically determine distances to other vehicles, perform timely braking and acceleration, or implement automatic lane changes and collision warnings.

[0003] With technological advancements and fierce industry competition, high-performance, cost-effective lenses are currently key to breaking through the current limitations. In optical lenses, the more complex the lens surface shape, the greater the degree of freedom for optimization. However, spherical lenses can only provide one variable for surface shape control: the radius of curvature at the center of the sphere. Aspherical lenses, on the other hand, can introduce higher-order aspherical coefficients as additional variables depending on the expression, making aspherical designs more likely to offer better performance than spherical designs. Under the design requirement of cost reduction, achieving the imaging requirements of optical lenses containing aspherical lenses using an all-glass spherical lens is a goal pursued by those skilled in the art.

[0004] Furthermore, existing automotive optical lenses struggle to simultaneously meet the diverse demands of miniaturization, large aperture, and high light throughput, making it impossible to achieve a balance between low cost and high performance. Moreover, harsh environments impose greater limitations on materials and structures, which exacerbate the trend of declining resolution and sensitivity in automotive optical lenses. Summary of the Invention

[0005] This application aims to provide an optical lens and electronic device to solve at least one of the above-mentioned technical problems.

[0006] 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 positive optical power; a second lens having positive optical power, wherein its first side surface is concave and its second side surface is convex; a third lens having positive optical power; a fourth lens having negative optical power; a fifth lens having positive optical power, wherein its first side surface is convex and its second side surface is convex; and a sixth lens having negative optical power, wherein its first side surface is concave; the optical lens comprises six lenses having optical power; the first lens, the second lens, the third lens... The fourth, fifth, and sixth lenses are all all-glass spherical lenses; the optical lenses satisfy the following relationships: 1.35≤F / ENPD≤1.7, 1.4≤TTL / F≤2.7, 0.85≤F3 / F≤1.8, -1.45≤F6 / F≤-0.45, and -1.2≤F4 / F≤-0.2; where F is the focal length of the entire optical lens group, ENPD is the entrance pupil diameter of the optical lens, TTL is the total optical length of the optical lens, F3 is the focal length of the third lens, F6 is the focal length of the sixth lens, and F4 is the focal length of the fourth lens.

[0007] According to an exemplary embodiment of this application, the first side surface of the first lens is convex and the second side surface is concave; or, the first side surface of the first lens is concave and the second side surface is convex; or, the first side surface of the first lens is convex and the second side surface is convex; the first side surface of the third lens is convex and the second side surface is convex; or, the first side surface of the third lens is convex and the second side surface is concave; or, the first side surface of the third lens is concave and the second side surface is convex; the first side surface of the fourth lens is concave and the second side surface is concave; or, the first side surface of the fourth lens is concave and the second side surface is convex; or, the first side surface of the fourth lens is convex and the second side surface is concave; the first side surface of the sixth lens is concave and the second side surface is convex; or, the first side surface of the sixth lens is concave and the second side surface is concave.

[0008] In this application, the letters below have the following meanings: DFOV is the maximum field of view of the optical lens; H is the image height corresponding to the maximum field of view of the optical lens; θ is the radian value of the maximum field of view of the optical lens; DMAX is the maximum value among the maximum aperture values ​​of all lenses corresponding to the maximum field of view of the optical lens; D11 is the maximum aperture value of the first side of the first lens corresponding to the maximum field of view of the optical lens; BFL is the optical back focal length of the optical lens; DST is the effective aperture of the aperture stop; T34 is the air gap between the third and fourth lenses; F1 is the focal length of the first lens; F2 is the focal length of the second lens; F5 is the focal length of the fifth lens; R22 is the center radius of curvature of the second side of the second lens; CT2 is the center thickness of the second lens; R21 is the center radius of curvature of the first side of the second lens; ET2 is the second The edge thickness of the lens, FR51 is the image-side focal length of the first side of the fifth lens, FR52 is the image-side focal length of the second side of the fifth lens, T56 is the air gap between the fifth and sixth lenses, R52 is the central radius of curvature of the second side of the fifth lens, R51 is the central radius of curvature of the first side of the fifth lens, T45 is the air gap between the fourth and fifth lenses, R11 is the central radius of curvature of the first side of the first lens, CT1 is the center thickness of the first lens, R12 is the central radius of curvature of the second side of the first lens, CT5 is the center thickness of the fifth lens, R61 is the central radius of curvature of the first side of the sixth lens, Ctmax is the maximum value of the center thickness from the first to the third lens, and Ctmin is the minimum value of the center thickness from the first to the third lens.

[0009] According to an exemplary embodiment of this application, the total optical length (TTL) of the optical lens is: 25 ≤ TTL / 1mm ≤ 35.

[0010] According to an exemplary embodiment of this application, the focal length F of the entire optical lens group and the image height H corresponding to the maximum field of view of the optical lens satisfy: 1.2≤F / H≤2.3.

[0011] According to an exemplary embodiment of this application, the image height H corresponding to the maximum field of view of the optical lens, the focal length F of the entire optical lens group, and the radian value θ of the maximum field of view of the optical lens satisfy: 0.8≤(H / 2) / (F×tan(θ / 2))≤1.1.

[0012] According to an exemplary embodiment of this application, the air gap T34 between the third lens and the fourth lens satisfies the following condition with respect to the focal length F of the entire optical lens group: 0.045≤T34 / F≤0.085.

[0013] According to an exemplary embodiment of this application, the focal length F1 of the first lens and the focal length F of the entire optical lens group satisfy: 1.6≤F1 / F≤3.2.

[0014] According to an exemplary embodiment of this application, the focal length F5 of the fifth lens and the focal length F of the entire optical lens group satisfy: 0.4≤F5 / F≤1.

[0015] According to an exemplary embodiment of this application, the center curvature radius R22 of the second side surface of the second lens, the center thickness CT2 of the second lens, and the center curvature radius R21 of the first side surface of the second lens satisfy: -0.95≤R22 / (CT2-R21)≤-0.65.

[0016] According to an exemplary embodiment of this application, the edge thickness ET2 of the second lens and the center thickness CT2 of the second lens satisfy: 0.85≤ET2 / CT2≤1.2.

[0017] According to an exemplary embodiment of this application, the central curvature radius R51 of the first side of the fifth lens, the air gap T45 between the fourth and fifth lenses, and the air gap T56 between the fifth and sixth lenses satisfy: 1.25≤R51 / (T45+T56)≤2.8.

[0018] According to an exemplary embodiment of this application, the central radius of curvature R11 of the first side surface of the first lens, the central thickness CT1 of the first lens, and the central radius of curvature R12 of the second side surface of the first lens satisfy: 0 < |R11| / (CT1+|R12|)≤5.8.

[0019] According to an exemplary embodiment of this application, the maximum value Ctmax of the center thickness of the first lens to the third lens and the minimum value Ctmin of the center thickness of the first lens to the third lens satisfy: 1.05≤Ctmax / Ctmin≤2.2.

[0020] According to an exemplary embodiment of this application, the maximum field of view (DFOV) of the optical lens satisfies: 25 ≤ DFOV / 1° ≤ 45.

[0021] According to an exemplary embodiment of this application, the optical lens satisfies at least one of the following relationships: 50≤(DFOV×F) / H / 1°≤70, 4.5≤TTL / H / θ×1rad≤8.5, 2.2≤TTL / DMAX≤3.6, 0.5≤(F×θ) / D11 / 1rad≤1.25, 1≤D11 / H / θ×1rad≤3, 0≤D11 / H / F×1mm≤0.1, 0≤|(HF×θ) / (F×θ)|×(1mm×1rad) / (1mm-1mm×1rad)≤0.16, 0 ≤BFL / TTL≤0.175, 0.08≤F / ENPD / D11×1mm≤0.2, 0.5≤DST / F≤0.82, 0<F / F2≤0.15, -0.8≤F5 / F6≤-0.4, 1.05≤FR51 / F≤1.85, 1≤FR52 / F≤6, -0.25≤T56 / R52≤-0.035, 0.085≤T56 / F≤0.45, -2.5≤F3 / F4≤-1, 0.125≤R51 / (CT5-R52)≤0.6 or -1≤R61 / F≤-0.3.

[0022] According to an exemplary embodiment of this application, the optical lens satisfies at least one of the following relationships: 56.648≤(DFOV×F) / H / 1°≤65.828, 1.783≤TTL / F≤2.492, 5.032≤TTL / H / θ×1rad≤7.064, 2.658≤TTL / DMAX≤3.202, 0.817≤(F×θ) / D11 / 1rad≤0.936, 1.572≤D11 / H / θ×1rad≤2.423, 0.066≤D11 / H / F×1mm≤0.084, 0≤|(HF ×θ) / (F×θ)|×(1mm×1rad) / (1mm-1mm×1rad)≤0.13, 0.022≤BFL / TTL≤0.138, 1.416≤F / H≤1.979, 1.4≤F / ENPD≤1.7, 0.125≤F / ENP D / D11×1mm≤0.167, 0.604≤DST / F≤0.78, 0.844≤(H / 2) / (F×tan(θ / 2))≤0.99, 0.9≤F3 / F≤1.359, -1.176≤F6 / F≤-0.858, -1.072≤F 4 / F≤-0.459, 0.053≤T34 / F≤0.078, 1.8≤F1 / F≤2.949, 0.031≤F / F2≤0.092, 0.501≤F5 / F≤0.832, -0.707≤F5 / F6≤-0.497, -0.867 ≤R22 / (CT2-R21)≤-0.782, 0.967≤ET2 / CT2≤1.003, 1.289≤FR51 / F≤1.657, 1.186≤FR52 / F≤5.494, -0.225≤T56 / R52≤-0.042, 1. 523≤R51 / (T45+T56)≤2.444、0.106≤T56 / F≤0.396、-2.234≤F3 / F4≤-1.268、0.011≤|R11| / (CT1+|R12|)≤4.889、0.153≤R51 / (CT5-R52)≤0.525、-0.804≤R61 / F≤-0.414、1.293≤Ctmax / Ctmin≤1.995、28.0046≤TTL / 1mm≤34.0033 or 28.623≤DFOV / 1°≤40.1796、

[0023] 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.

[0024] The optical lens according to the embodiments of this application uses six lenses with optical power. The first lens has positive optical power, which has a prominent light-gathering effect and can gather large-angle incident light, reduce the workload of the rear lens, reduce the size of the rear lens group, and simplify aberration correction. The positive optical power of the first lens can also compensate for the negative field curvature caused by the rear negative lens, so that the entire field of view of the optical lens remains clear.

[0025] The second lens has positive optical power, which balances the optical power distribution of the lens, reduces the pressure on the rear lens elements, and prevents rapid accumulation of power that could lead to instability in high and low temperature performance. The second lens also allows light to enter the rear lens elements more smoothly, significantly reducing the lens's sensitivity and manufacturing complexity. The first side of the second lens is concave, receiving light from the first lens and correcting spherical aberration while controlling light and suppressing coma. The second side of the second lens is convex, working in conjunction with the first side to allow for a smooth light transition, ensuring high light transmission while maintaining low sensitivity.

[0026] The third lens has positive optical power, which can further gather light and lower its height, allowing for a smaller rear lens size. Working in conjunction with the first and second lenses, the third lens corrects chromatic aberration, significantly improving chromatic aberration in edge areas of the image. The positive field curvature introduced by the third lens's positive optical power can also help compensate for this, ensuring a clear and uniform image across the entire chip and reducing the workload of the rear lenses in correcting various aberrations. Furthermore, the positive optical power design of the third lens allows for a larger aperture stop, giving the optical lens greater light-gathering capability.

[0027] The fourth lens has negative optical power, which optimizes the optical path of the fourth lens, effectively controls the size and shape of the fourth lens, and realizes the miniaturization of the optical lens; the negative optical power of the fourth lens can also balance the residual aberrations of the front group of positive lenses and improve the resolving power; the negative optical power of the fourth lens can also correct the imaging defects of the edge field of view and ensure that the peripheral field of view is clear and not blurred.

[0028] The fifth lens has positive optical power, compressing the aperture of the rear lens group to meet the miniaturization requirements of automotive optical lenses. Its positive optical power also works in conjunction with the front lens group to improve chromatic aberration correction across the entire field of view, compensating for residual negative field curvature with its own positive field curvature to ensure full-field sharpness of the imaging chip. Furthermore, the positive optical power of the fifth lens can distribute the aberration correction load of the optical lens, balancing residual spherical aberration and coma. The first side of the fifth lens is convex, reducing ray height, eliminating the outermost rays affecting aberrations, improving image quality, and maximizing the correction of the field curvature and distortion of the front group. The second side of the fifth lens is also convex, improving light-gathering ability, ensuring the incident angle of the sixth lens, and facilitating aberration elimination by the sixth lens, thus guaranteeing imaging quality across the entire field of view.

[0029] The sixth lens has negative optical power, which can accurately correct residual field curvature of the optical lens and optimize image edge imaging. The negative optical power of the sixth lens can also output negative aberrations to balance excessive positive aberrations accumulated by the optical lens. Furthermore, the negative optical power of the sixth lens can adjust the beam angle to match the imaging position of light rays from different fields of view on the image plane. The first side of the sixth lens is concave, which collects light rays. The positive optical power of the first, second, and third lenses converges a large amount of light and aberrations, and the concave surface plays a role in correction and balancing this.

[0030] The first, second, third, fourth, fifth, and sixth lenses are all all-glass spherical lenses. The lenses from the first to the sixth lens are made of glass, and through the combination of materials and structure, a heat-free function is achieved.

[0031] By rationally allocating the optical power ratio of the six lenses, the lens surface structure, and the center thickness and curvature parameters of each lens on the optical axis, while controlling the overall size and optical ratio of the optical lens, the optical lens can meet the following requirements: 1.35≤F / ENPD≤1.7, 1.4≤TTL / F≤2.7, 0.85≤F3 / F≤1.8, -1.45≤F6 / F≤-0.45, and -1.2≤F4 / F≤-0.2. This enables a low-cost vehicle-mounted telephoto lens that also achieves a large aperture and low sensitivity.

[0032] The focal length F of the entire optical lens assembly and the entrance pupil diameter ENPD of the optical lens satisfy the following condition: 1.35≤F / ENPD≤1.7. The optical lens has a large aperture and can adapt to low-light environments during the use of the optical lens.

[0033] The total optical length (TTL) and focal length (F) of the optical lens satisfy the condition: 1.4 ≤ TTL / F ≤ 2.7, which balances the total optical length and focal length of the optical lens and achieves the long focal length and miniaturization characteristics required for the optical lens.

[0034] The focal length F3 of the third lens satisfies the following condition with the focal length F of the entire optical lens group: 0.85≤F3 / F≤1.8. The third lens has a large optical power, which allows it to work with the first and second lenses to supplement the total converging power required by the front group, facilitating the slow convergence of light and achieving a telephoto lens.

[0035] The focal length F6 of the sixth lens satisfies the following condition with the focal length F of the entire optical lens group: -1.45≤F6 / F≤-0.45. This can effectively correct field curvature and control distortion, while ensuring that light falls accurately on the image plane, ensuring the overall cleanliness of the image, and improving the resolving power.

[0036] The focal length F4 of the fourth lens satisfies the following condition with the focal length F of the entire optical lens group: -1.2≤F4 / F≤-0.2. This can balance the adjacent positive lenses of the fourth lens, correct the positive field curvature, and improve the resolving power of the optical lens. At the same time, the effective divergence capability of the fourth lens is conducive to matching the large target surface imaging requirements of eight million pixels. Attached Figure Description

[0037] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Figure 1 A schematic diagram of the structure of an optical lens according to Embodiment 1 of this application is shown; Figure 2 A schematic diagram of the structure of an optical lens according to Embodiment 2 of this application is shown; Figure 3 A schematic diagram of the structure of an optical lens according to Embodiment 3 of this application is shown; Figure 4 A schematic diagram of the structure of an optical lens according to Embodiment 4 of this application is shown; Figure 5 A schematic diagram of the structure of an optical lens according to Embodiment 5 of this application is shown; Figure 6 A schematic diagram of the structure of an optical lens according to Embodiment 6 of this application is shown; Figure 7 A schematic diagram of the structure of an optical lens according to Embodiment 7 of this application is shown; Figure 8 A schematic diagram of the structure of an optical lens according to Embodiment 8 of this application is shown; Figure 9 A schematic diagram of the structure of an optical lens according to Embodiment 9 of this application is shown; Figure 10 A schematic diagram of the structure of an optical lens according to Embodiment 10 of this application is shown; Figure 11 A schematic diagram of the structure of an optical lens according to Embodiment 11 of this application is shown; Figure 12 A schematic diagram of the structure of an optical lens according to Embodiment 12 of this application is shown; Figure 13 A schematic diagram of the structure of an optical lens according to Embodiment 13 of this application is shown; Figure 14 A schematic diagram of the structure of an optical lens according to Embodiment 14 of this application is shown; Figure 15 The modulation transfer function (MTF) curve of the optical lens according to Embodiment 1 of this application is shown. Figure 16 A schematic diagram of the distortion of an optical lens according to Embodiment 1 of this application is shown; Figure 17 A schematic diagram of the relative illumination of an optical lens according to Embodiment 1 of this application is shown; Figure 18 A schematic diagram showing the center thickness and edge thickness of a second lens according to an embodiment of this application is provided.

[0038] Explanation of reference numerals in the attached figures: First lens L1; Second lens L2; ​​Third lens L3; Fourth lens L4; Fifth lens L5; Sixth lens L6; Aperture stop STO; Protective glass L7; Filter L8; Image plane IMA; The first side surface S1 of the first lens L1, and the second side surface S2 of the first lens L1; The first side surface S3 of the second lens L2, the second side surface S4 of the second lens L2; The first side surface S5 of the third lens L3, the second side surface S6 of the third lens L3; The first side surface S7 of the fourth lens L4, and 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; The first side surface S11 of the sixth lens L6, and the second side surface S12 of the sixth lens L6; The first side of the protective glass L7 is S13, and the second side of the protective glass L7 is S14. The first side surface S15 of filter L8, and the second side surface S16 of filter L8. Detailed Implementation

[0039] 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 descriptions 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. 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 indicate any limitation on the features. Therefore, the first lens discussed below may also be referred to as the second lens or the third lens without departing from the teachings of this application. In the drawings, for ease of illustration, the thickness, size, and shape of the lenses have been slightly exaggerated. Specifically, the shapes of spherical or aspherical surfaces shown in the drawings are illustrated by way of example. That is, the shapes of spherical or aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustrative purposes only and are not strictly drawn to scale.

[0040] 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. 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 term "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. Unless otherwise specified, all terms used herein (including technical and scientific terms) 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., terms defined in common dictionaries) should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and will not be interpreted in an idealized or overly formal sense, unless expressly so defined herein. 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.

[0041] The features, principles and other aspects of this application are described in detail below.

[0042] An optical lens according to an exemplary embodiment of this application may include, for example, six lenses with optical power, namely a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, which are arranged sequentially from the first side to the second side along the optical axis.

[0043] In an example embodiment, the optical lens can be used as, for example, an imaging optical lens. In this case, the first side of the optical lens can be the object side, and the second side can be the image side. Light from the object side can be imaged on the image side. The second side of the optical lens is provided with an imaging surface. The imaging optical lens can be a vehicle-mounted optical lens, a security monitoring optical lens, or a radar receiver optical lens. In an example embodiment, the optical lens can be used as, for example, a projection optical lens or a lidar transmitter optical 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 provided with an image source surface. In an example embodiment, the optical lens provided in this application can be used as a light-receiving optical lens or a light-emitting optical lens. The light-receiving optical lens is typically used to collect light from the object-side space. The collected light is used to form detection information, including but not limited to imaging and laser point clouds. The light-emitting optical lens is typically used to transmit light from a light-emitting unit to the object-side space. According to the function of the light, the light transmitted to the object-side space can be divided into projection light for forming a projected image or detection light for detecting target information, etc. It is understood that when the optical lens provided in this application is used as a light-receiving optical lens such as a camera optical lens, a lidar receiver optical lens, a microscopic optical lens, or a telescope optical lens, the term "first side" as used herein can refer to the object side, and "second side" can 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 optical lens can be, for example, a vehicle-mounted camera, an infrared camera, a drone camera, a night vision camera, or a security monitoring camera. When the optical lens provided in this application is used as a light-emitting optical lens such as a projection optical lens or a lidar transmitter optical lens, the term "first side" as used herein can refer to the object side, and "second side" can refer to the light source side. In some possible implementations, the optical lens provided in this application can also simultaneously perform light-receiving and light-emitting functions. For example, the optical lens provided in this application is used in a lidar optical lens that shares a light-receiving and light-emitting path, where the optical lens simultaneously performs the functions of emitting laser light and receiving radar echo beams. For example, the optical lens provided in this application is used in an optical communication and radar integration optical lens, which simultaneously performs the functions of transmitting modulated optical signals and receiving radar echo beams.

[0044] In the example implementation, the first lens has positive optical power, resulting in excellent light-gathering effect. It can gather large-angle incident light rays, reducing the workload of the rear lens elements. Although the positive optical power of the first lens will significantly introduce aberrations such as spherical aberration, coma, and distortion, its advantage lies in reducing the size of the rear lens elements and simplifying aberration correction. In terms of imaging performance, the positive optical power of the first lens can also compensate for the negative field curvature caused by the rear negative lens, ensuring that the entire field of view of the optical lens remains clear. The first side surface of the first lens is either convex or concave. This first side surface can receive large-angle light rays entering the optical lens, increasing the light transmission of the optical lens and effectively reducing the resolving pressure of the rear lens elements. The surface shape of the first side surface of the first lens is strongly correlated with ghosting; effectively controlling the surface shape ensures a clean and clear image, improving image quality. The second side of the first lens is either concave or convex. The shape of the second side of the first lens, combined with the shape of the first side, can control the influence of primary spherical aberration. By controlling the shape of the second side of the first lens, the coma distribution caused by the first side can be controlled, thus improving image quality. The second side of the first lens also uses negative field curvature to correct the positive field curvature effect of the first side, ensuring sharpness. By changing the light path through the shape of the second side of the first lens, it helps to improve chromatic aberration and stray light.

[0045] In the example embodiment, the second lens has positive optical power, which can balance the optical power distribution of the optical lens, reduce the pressure on the rear lens group, and prevent rapid accumulation of power that could lead to instability in high and low temperature performance. The second lens also allows light to enter the rear lens group more smoothly, significantly reducing the sensitivity of the optical lens and reducing manufacturing pressure. The first side of the second lens is concave, receiving light from the first lens and correcting spherical aberration while controlling light and suppressing coma. The second side of the second lens is convex, and its cooperation with the first side allows for a smooth transition of light, ensuring high light transmission while maintaining low sensitivity of the optical lens.

[0046] In the example implementation, the third lens has positive optical power, which can further gather light and reduce the light height, allowing for a smaller rear lens size. The third lens, together with the first and second lenses, corrects chromatic aberration, significantly improving chromatic aberration in the edge areas of the image. The positive field curvature introduced by the positive optical power of the third lens can assist in compensation, ensuring clear and uniform imaging across the entire chip area, and also reducing the workload of the rear lenses in correcting various aberrations. Furthermore, the positive optical power design of the third lens allows for a larger aperture stop, giving the optical lens greater light transmission capability. The first side of the third lens is either convex or concave. The second side of the third lens is also either convex or concave. A convex second side of the third lens effectively gathers light, reducing the light height of the fourth lens, thereby reducing the rear aperture size.

[0047] In the example implementation, the fourth lens has negative optical power, which optimizes the optical path of the fourth lens, effectively controls the size and shape of the fourth lens, and achieves miniaturization of the optical lens. The negative optical power of the fourth lens can also balance the residual aberrations of the multiple positive lenses in the front group, improving resolving power. Furthermore, the negative optical power of the fourth lens can correct imaging defects in the edge field of view, ensuring a clear and unblurred peripheral field of view. The first side of the fourth lens is either convex or concave, which can balance the large amount of spherical aberration and field curvature accumulated in the front group. The second side of the fourth lens is either convex or concave, which can improve peripheral resolution, adjust the optical path, and ensure improved resolution across the entire field of view.

[0048] In the example implementation, the fifth lens has positive optical power, compressing the aperture of the rear lens group to meet the miniaturization requirements of automotive optical lenses. The positive optical power of the fifth lens can also work in conjunction with the front lens group to improve full-field chromatic aberration correction, compensating for residual negative field curvature with its own positive field curvature, ensuring full-field clarity of the imaging chip. The positive optical power of the fifth lens can also distribute the aberration correction load of the optical lens, balancing residual spherical aberration and coma. The first side of the fifth lens is convex, reducing the height of light rays, eliminating the outermost rays affecting aberrations, improving image quality, and maximizing the correction of the field curvature and distortion of the front group. The second side of the fifth lens is convex, which improves light-gathering ability, ensures the incident angle of the sixth lens, facilitates aberration elimination by the sixth lens, and guarantees imaging quality across the entire field of view.

[0049] In the example implementation, the sixth lens has a negative optical power, which can accurately correct residual field curvature of the optical lens and optimize image edge imaging; the negative optical power of the sixth lens can output negative aberrations to balance excessive positive aberrations accumulated by the optical lens; the negative optical power of the sixth lens can adjust the beam angle to match the imaging position of light rays from each field of view on the image plane. The first side of the sixth lens is concave, which can collect light rays. The positive optical powers of the first, second, and third lenses converge a large amount of light rays and aberrations, and the concave surface can play a certain corrective and balancing role. The second side of the sixth lens can be concave or convex, which can match different combinations of optical powers from the previous group.

[0050] In an example embodiment, the optical lens may further include an aperture stop disposed between the second lens and the third lens. The aperture stop, located between the second and third lenses, facilitates effective light convergence entering the optical lens, reduces the aperture of the lens at the rear end of the optical lens, and lowers the assembly sensitivity of the optical lens.

[0051] In the example implementation, the first lens, second lens, third lens, fourth lens, fifth lens, and sixth lens are all all-glass spherical lenses. The lenses of the first to sixth lenses are made of glass, and through the combination of materials and structure, a heat-free function is achieved.

[0052] In the example embodiment, the second side surface of the third lens and the first side surface of the fourth lens are both spherical with opposite surface shapes. The absolute values ​​of the central curvature radii are close, and the central air gaps on both sides are small, indicating a tendency to bond. The third lens and the fourth lens can be bonded together as a composite.

[0053] In the example implementation, the second side surface of the fourth lens and the first side surface of the fifth lens are both spherical with opposite surface shapes. The absolute values ​​of the central curvature radii are close, and the central air gaps on both sides are small, indicating a tendency to bond. The fourth lens and the fifth lens can be bonded together as a composite.

[0054] In an example embodiment, the optical lens may further include an infrared cut-off filter (IR) located between the sixth lens and the image plane to filter light of different wavelengths. The optical lens may also, as needed, have a cover glass (CG) between the filter and the image plane to prevent damage to internal components (e.g., chips) of the optical lens.

[0055] In an example 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 charge-coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS).

[0056] In the example implementation, the total optical length (TTL) of the optical lens satisfies: 25 ≤ TTL / 1mm ≤ 35. Preferably, 28.0046 ≤ TTL / 1mm ≤ 34.0033. Controlling the TTL range allows the optical lens sufficient space to arrange six global surface glass lenses, enabling precise correction of field curvature, chromatic aberration, and distortion, achieving high MTF at long distances. When the TTL is excessively compressed, it leads to crowded lens arrangement, difficulty in allocating positive and negative optical power, poor far-field edge resolution, and large errors in the telephoto distance calculation of the optical lens.

[0057] In the example implementation, the maximum field of view (DFOV) of the optical lens satisfies: 25 ≤ DFOV / 1° ≤ 45. Preferably, 28.623 ≤ DFOV / 1° ≤ 40.1796. The DFOV can be the maximum field of view when paired with an imaging chip with a diagonal size of 9.25mm. Controlling the range of DFOV ensures that the optical lens has sufficient lateral field of view to avoid blind spots such as curves, merging points, and road signs, while also preventing ranging errors, distortion, and edge dimming caused by an excessively large field of view.

[0058] In the example implementation, the maximum field of view (DFOV) of the optical lens, the focal length F of the entire optical lens assembly, and the image height H corresponding to the maximum field of view satisfy: 50 ≤ (DFOV × F) / H / 1° ≤ 70. Preferably, 56.648 ≤ (DFOV × F) / H / 1° ≤ 65.828. By controlling the range of this relationship, the optical lens possesses telephoto and large-area characteristics, enabling the lens to achieve telephoto functionality and eight million or even ten million pixels.

[0059] In the example implementation, the total optical length (TTL) of the optical lens and the focal length (F) of the entire optical lens assembly satisfy: 1.4 ≤ TTL / F ≤ 2.7. Preferably, 1.783 ≤ TTL / F ≤ 2.492. By controlling the range of this relationship, the total optical length and focal length of the optical lens are balanced, achieving the required telephoto and miniaturized characteristics of the optical lens.

[0060] In the example implementation, the total optical length (TTL) of the optical lens, the image height (H) corresponding to the maximum field of view of the optical lens, and the radian value (θ) of the maximum field of view of the optical lens satisfy: 4.5 ≤ TTL / H / θ × 1 rad ≤ 8.5. Preferably, 5.032 ≤ TTL / H / θ × 1 rad ≤ 7.064. Controlling the range of this relationship allows the optical lens to balance miniaturization and large-area imaging, meeting the application scenarios of eight million or even ten million pixels.

[0061] In the example implementation, the total optical length (TTL) of the optical lens and the maximum value (DMAX) of the maximum aperture of each lens corresponding to the maximum field of view of the optical lens satisfy the following condition: 2.2 ≤ TTL / DMAX ≤ 3.6. Preferably, 2.658 ≤ TTL / DMAX ≤ 3.202. By controlling the range of this relationship and keeping the ratio of the total optical length to the maximum lens aperture small, the entire optical lens can be made more compact and smaller.

[0062] In the example embodiment, the focal length F of the entire optical lens assembly, the radian value θ of the maximum field of view of the optical lens, and the maximum aperture D11 of the first side of the first lens corresponding to the maximum field of view of the optical lens satisfy the following: 0.5 ≤ (F×θ) / D11 / 1rad ≤ 1.25. Preferably, 0.7983 ≤ (F×θ) / D11 / 1rad ≤ 0.9437. By controlling the range of this relationship, when the maximum field of view of the optical lens is constant, a smaller maximum aperture of the optical lens can result in a smaller front aperture of the lens, thereby reducing the imaging volume of the optical lens.

[0063] In the example embodiment, the maximum aperture D11 of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy: 1 ​​≤ D11 / H / θ × 1rad ≤ 3. Preferably, 1.572 ≤ D11 / H / θ × 1rad ≤ 2.423. Controlling the range of this relationship allows the optical lens to have miniaturization and large target surface characteristics, realizing the eight million or even ten million pixels required for optical lens applications.

[0064] In the example embodiment, the maximum aperture D11 of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the focal length F of the entire optical lens assembly satisfy: 0 ≤ D11 / H / F × 1mm ≤ 0.1. Preferably, 0.066 ≤ D11 / H / F × 1mm ≤ 0.084. Controlling the range of this relationship allows the optical lens to possess miniaturization, telephoto, and large aperture characteristics, realizing the telephoto function and high pixel count required for optical lens applications.

[0065] In the example embodiment, the image height H corresponding to the maximum field of view of the optical lens, the focal length F of the entire optical lens group, and the radian value θ of the maximum field of view of the optical lens satisfy: 0 ≤ |(HF×θ) / (F×θ)|×(1mm×1rad) / (1mm-1mm×1rad)≤0.16. Preferably, 0 ≤ |(HF×θ) / (F×θ)|×(1mm×1rad) / (1mm-1mm×1rad)≤0.13. Controlling the range of this relationship results in a high angular refractive index in the central region of the optical lens, which is beneficial to improving the imaging effect in the central region.

[0066] In the example implementation, the optical back focal length (BFL) and the optical total length (TTL) of the optical lens satisfy the condition: 0 ≤ BFL / TTL ≤ 0.175. Preferably, 0.022 ≤ BFL / TTL ≤ 0.138. By controlling the range of this relationship, while satisfying miniaturization, a certain amount of space is left for the back end to achieve low sensitivity.

[0067] In the example implementation, the focal length F of the entire optical lens assembly and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: 1.2 ≤ F / H ≤ 2.3. Preferably, 1.416 ≤ F / H ≤ 1.979. By controlling the range of this relationship, the optical lens can possess telephoto and large-area characteristics, realizing the telephoto function of the optical lens and eight million or even ten million pixels.

[0068] In the example embodiment, the focal length F of the entire optical lens assembly and the entrance pupil diameter ENPD of the optical lens satisfy the following condition: 1.35 ≤ F / ENPD ≤ 1.7. Preferably, 1.4 ≤ F / ENPD ≤ 1.7. By controlling the range of this relationship, the optical lens has a larger aperture, which can adapt to low-light environments during the use of the optical lens.

[0069] In the example embodiment, the focal length F of the entire optical lens assembly, the entrance pupil diameter ENPD of the optical lens, and the maximum aperture D11 of the first side of the first lens corresponding to the maximum field of view of the optical lens satisfy: 0.08 ≤ F / ENPD / D11 × 1mm ≤ 0.2. Preferably, 0.125 ≤ F / ENPD / D11 × 1mm ≤ 0.167. By controlling the range of this relationship, a larger aperture can be obtained while ensuring a smaller front aperture.

[0070] In the example implementation, the effective aperture diameter (DST) of the aperture stop and the total focal length (F) of the optical lens satisfy the following condition: 0.5 ≤ DST / F ≤ 0.82. Preferably, 0.604 ≤ DST / F ≤ 0.78. By controlling the range of this relationship, a larger ratio of aperture stop diameter to total focal length results in a larger optical lens aperture.

[0071] In the example embodiment, the image height H corresponding to the maximum field of view of the optical lens, the focal length F of the entire optical lens group, and the radian value θ of the maximum field of view of the optical lens satisfy: 0.8 ≤ (H / 2) / (F×tan(θ / 2)) ≤ 1.1. Preferably, 0.844 ≤ (H / 2) / (F×tan(θ / 2)) ≤ 0.99. By controlling the range of this relationship, the edge distortion of the optical lens is small, resulting in a large angular resolution for each field of view and good image resolution for each field of view.

[0072] In the example embodiment, the focal length F3 of the third lens satisfies the following relationship with the focal length F of the entire optical lens group: 0.85 ≤ F3 / F ≤ 1.8. Preferably, 0.9 ≤ F3 / F ≤ 1.359. By controlling the range of this relationship, the third lens has a larger optical power, allowing it to work in conjunction with the first and second lenses to supplement the total converging power required by the front group, facilitating the slow convergence of light and achieving a telephoto lens.

[0073] In the example implementation, the focal length F6 of the sixth lens and the focal length F of the entire optical lens group satisfy: -1.45 ≤ F6 / F ≤ -0.45. Preferably, -1.176 ≤ F6 / F ≤ -0.858. Controlling the range of this relationship can effectively correct field curvature and control distortion, while ensuring that light falls accurately on the image plane, ensuring the overall cleanliness of the image, and improving resolving power.

[0074] In the example implementation, the focal length F4 of the fourth lens and the focal length F of the entire optical lens group satisfy: -1.2 ≤ F4 / F ≤ -0.2. Preferably, -1.072 ≤ F4 / F ≤ -0.459. Controlling the range of this relationship can balance the adjacent positive lenses of the fourth lens, correct the positive field curvature, and improve the resolution of the optical lens; at the same time, the effective divergence capability of the fourth lens is beneficial to matching the large target surface imaging requirements of eight megapixels.

[0075] In the example embodiment, the air gap T34 between the third and fourth lenses satisfies the following relationship with the focal length F of the entire optical lens assembly: 0.045 ≤ T34 / F ≤ 0.085. Preferably, 0.053 ≤ T34 / F ≤ 0.078. By controlling the range of this relationship, the air gap between the positive power third lens and the negative power fourth lens is very small, allowing the light rays exiting the third lens to quickly enter the negative compensation fourth lens. This is beneficial for improving chromatic aberration correction performance, preventing chromatic aberration from being continuously amplified and propagated, and improving image quality.

[0076] In the example embodiment, the focal length F1 of the first lens and the focal length F of the entire optical lens group satisfy: 1.6 ≤ F1 / F ≤ 3.2. Preferably, 1.8 ≤ F1 / F ≤ 2.949. As the first lens element of the optical lens, controlling its focal length within a certain range allows it to play a major role in converging the main light beam, compressing the incident beam height, and reducing the effective aperture of all subsequent lenses. This is beneficial for lens miniaturization, weight reduction, and lower lens outer diameter costs; at the same time, it helps to fill the entrance pupil with light, which is beneficial for lenses with small aperture numbers.

[0077] In the example embodiment, the focal length F of the entire optical lens assembly and the focal length F2 of the second lens satisfy: 0 < F / F2 ≤ 0.15. Preferably, 0.031 ≤ F / F2 ≤ 0.092. By controlling the range of this relationship, the second lens has a larger positive focal length, acting as a deflection buffer for the light beam. This prevents the light beam from converging abruptly due to another strong positive lens immediately following the first lens, causing the light beam to drop too quickly and easily inducing a large amount of high-order spherical aberration, which is particularly difficult to suppress with large-aperture optical lenses.

[0078] In the example embodiment, the focal length F5 of the fifth lens and the focal length F of the entire optical lens group satisfy: 0.4 ≤ F5 / F ≤ 1. Preferably, 0.501 ≤ F5 / F ≤ 0.832. By controlling the range of this relationship, the positive fifth lens behind the negative fourth lens has a smaller positive focal length, which can avoid excessive light divergence, correct aberrations, and allow light to be incident on the image plane, avoiding light energy loss and increasing light transmission.

[0079] In the example implementation, the focal length F5 of the fifth lens and the focal length F6 of the sixth lens satisfy: -0.8 ≤ F5 / F6 ≤ -0.4. Preferably, -0.707 ≤ F5 / F6 ≤ -0.497. By controlling the range of this relationship, the last two lenses in the optical lens have opposite focal length attributes and relatively close values, which is beneficial for eliminating chromatic aberration, improving image quality, controlling the direction of light entering the image plane, and reducing distortion at the edge of the field of view.

[0080] In the example embodiment, the central radius of curvature R22 of the second side surface of the second lens, the central thickness CT2 of the second lens, and the central radius of curvature R21 of the first side surface of the second lens satisfy: -0.95 ≤ R22 / (CT2-R21) ≤ -0.65. Preferably, -0.867 ≤ R22 / (CT2-R21) ≤ -0.782. Controlling the range of this relationship ensures that the curvature of the two sides of the second lens is similar, and the overall shape of the second lens is gentle, which is beneficial for a smooth transition of light and reduces the sensitivity of the optical lens.

[0081] In the example embodiment, the edge thickness ET2 and the center thickness CT2 of the second lens satisfy the following condition: 0.85 ≤ ET2 / CT2 ≤ 1.2. Preferably, 0.967 ≤ ET2 / CT2 ≤ 1.003. A schematic diagram of CT2 and ET2 is shown below. Figure 18 As shown. By controlling the range of this relationship, the edge thickness and center thickness of the second lens are close, which allows the angle change of light rays after passing through the second lens to be small, smoothly receiving the converging beam output from the first lens and slowly transitioning it to the third lens; and maintaining a high degree of smooth beam convergence can suppress advanced spherical aberration and improve resolving power.

[0082] In the example embodiment, the single-sided focal length FR51 of the first side of the fifth lens and the overall focal length F of the optical lens group satisfy: 1.05 ≤ FR51 / F ≤ 1.85. Preferably, 1.289 ≤ FR51 / F ≤ 1.657. FR51 refers to the single-sided focal length of the first side of the fifth lens on the glass medium side when light enters from air into the glass medium. Within this range, the positive focal length of the first side of the positive fifth lens is relatively small, which is beneficial for the smooth entry of light into the rear, increasing the amount of light transmitted, reducing light energy loss, and also correcting the aberrations caused by the concave surface, thus improving the image quality.

[0083] In the example embodiment, the single-sided focal length FR52 of the second side of the fifth lens and the overall focal length F of the optical lens group satisfy: 1 ​​≤ FR52 / F ≤ 6. Preferably, 1.186 ≤ FR52 / F ≤ 5.494. FR52 refers to the single-sided focal length of the second side of the fifth lens on the air side when light exits from the glass medium to the air medium. Controlling the range of this relationship is beneficial for further correcting aberrations caused by the concave surface and improving image quality.

[0084] In the example implementation, the air gap T56 between the fifth and sixth lenses and the center radius of curvature R52 of the second side surface of the fifth lens satisfy the following condition: -0.25 ≤ T56 / R52 ≤ -0.035. Preferably, -0.225 ≤ T56 / R52 ≤ -0.042. By controlling the range of this relationship, and under the premise that the second side surface of the fifth lens is further corrected for aberrations based on the first side surface of the fifth lens, the air gap is moderately increased, resulting in better correction of light rays while avoiding drastic changes in light trajectory and reducing the sensitivity of the optical lens.

[0085] In the example embodiment, the central radius of curvature R51 of the first side of the fifth lens, the air gap T45 between the fourth and fifth lenses, and the air gap T56 between the fifth and sixth lenses satisfy: 1.25 ≤ R51 / (T45+T56) ≤ 2.8. Preferably, 1.523 ≤ R51 / (T45+T56) ≤ 2.444. By controlling the range of this relationship, the radius of curvature of the first side of the positive fifth lens is relatively small, and while ensuring that the total optical length of the optical lens is controlled, the air gap between the fifth lens and the two preceding and following lenses is relatively large. This is beneficial for correcting field curvature caused by the concave surface and also enables slow convergence of light, which is beneficial for the telephoto and low sensitivity of the optical lens.

[0086] In the example implementation, the air gap T56 between the fifth and sixth lenses satisfies the following relationship with the focal length F of the entire optical lens assembly: 0.085 ≤ T56 / F ≤ 0.45. Preferably, 0.106 ≤ T56 / F ≤ 0.396. By controlling the range of this relationship, while ensuring a small overall optical length, the air gap between the fifth and sixth lenses is appropriately increased to ensure sufficient separation of light rays from different fields of view and different wavelengths, thereby reducing the impact of coupling on image quality.

[0087] In the example implementation, the focal length F3 of the third lens and the focal length F4 of the fourth lens satisfy: -2.5 ≤ F3 / F4 ≤ -1. Preferably, -2.234 ≤ F3 / F4 ≤ -1.268. By controlling the range of this relationship, the focal lengths of adjacent positive third lenses and negative fourth lenses are close, allowing light to balance most of the field curvature of the front group in the fourth lens, preventing a large amount of field curvature from being transmitted to the rear group, significantly reducing the pressure on the rear lenses to correct field curvature, and improving image quality.

[0088] In the example embodiment, the central radius of curvature R11 of the first side surface of the first lens, the central thickness CT1 of the first lens, and the central radius of curvature R12 of the second side surface of the first lens satisfy: 0 < |R11| / (CT1+|R12|) ≤ 5.8. Preferably, 0.011 ≤ |R11| / (CT1+|R12|) ≤ 4.889. Controlling the range of this relationship makes the shape of the first lens gentle, avoiding the reflection of external stray light inward to form ghost images and reducing the energy of ghost image generation. At the same time, light passing through the gentle first lens is less likely to produce a large amount of advanced spherical aberration, making it suitable for large aperture lenses.

[0089] In the example embodiment, the central radius of curvature R51 of the first side of the fifth lens, the central thickness CT5 of the fifth lens, and the central radius of curvature R52 of the second side of the fifth lens satisfy: 0.125≤R51 / (CT5-R52)≤0.6. Preferably, 0.153≤R51 / (CT5-R52)≤0.525. Since the light rays emitted from the fourth lens are divergent, controlling the range of this relationship makes the fifth lens a relatively thick lens. Furthermore, both sides of the fifth lens contribute positive optical power, which is beneficial for adjusting the separation degree of light rays from different fields of view and different wavelengths. This also helps to further converge residual chromatic aberration in the rear, improving resolving power.

[0090] In the example embodiment, the central radius of curvature R61 of the first side of the sixth lens and the focal length F of the entire optical lens group satisfy: -1≤R61 / F≤-0.3. Preferably, -0.804≤R61 / F≤-0.414. By controlling the range of this relationship, the positive field curvature introduced by multiple positive lenses in front can be corrected, making the focal point of the entire field of view tend to be flat, and realizing simultaneous clear imaging of the center and edge fields of view.

[0091] In the example implementation, the maximum center thickness Ctmax of the first to third lenses and the minimum center thickness Ctmin of the first to third lenses satisfy: 1.05 ≤ Ctmax / Ctmin ≤ 2.2. Preferably, 1.293 ≤ Ctmax / Ctmin ≤ 1.995. By controlling the range of this relationship, the center thicknesses of the first, second, and third lenses are close, so that the positive optical power is distributed among these three lenses, preventing any single lens from exhibiting extreme curvature and reducing the high-order spherical aberration of any single lens. After these three lenses are stacked, the subsequent negative lens group uniformly compensates for high-order aberrations, making it suitable for optical lenses with small apertures.

[0092] In the example implementation, the optical lenses satisfy the following relationships: 1.6≤F1 / F≤3.2, 0<F / F2≤0.15, 0.85≤F3 / F≤1.8, -1.2≤F4 / F≤-0.2, 0.4≤F5 / F≤1, and -1.45≤F6 / F≤-0.45. By controlling these relationships, the first lens is the primary positive focusing element, the second lens acts as a transition element with a very small positive focal length, the third and fourth lenses dominate imaging and aberration compensation, the fifth lens assists imaging, and the sixth lens achieves field curvature matching. Furthermore, the first to third lenses, consecutively positive, constitute the main imaging area of ​​the front group, while the fourth and sixth lenses primarily perform correction and compensation functions. This combined constraint simultaneously achieves the requirements of spherical aberration balance, chromatic aberration control, distortion suppression, 8-megapixel high resolution, and miniaturization. Under the constraint of an all-glass spherical surface, the above-mentioned collaborative architecture achieves joint correction of multiple aberrations solely through the focal length ratio of the spherical lenses.

[0093] The optical lens according to the above embodiments of this application can employ multiple lenses, such as the six lenses mentioned above. By rationally allocating the optical parameters of each lens, the optical lens achieves small aperture, miniaturization, high resolution, low sensitivity, large angular resolution, large field of view, long back focal length, low distortion, small principal angle, high illumination, and good manufacturability. It can also be well-matched to, 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.

[0094] Specific embodiments of the optical lens applicable to the above-described embodiments are further described below with reference to the accompanying drawings.

[0095] Example 1 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 includes, in sequence from the first side to the second side along the optical axis: a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6. An aperture stop STO can be positioned between the first lens L1 and the second lens L2.

[0096] The first lens L1 has positive optical power, and its first side surface S1 is convex, and its second side surface S2 is convex.

[0097] The second lens L2 has positive optical power, with its first side surface S3 being concave and its second side surface S4 being convex.

[0098] The third lens L3 has positive optical power, and its first side surface S5 is convex, and its second side surface S6 is convex.

[0099] The fourth lens L4 has negative optical power, and its first side surface S7 is concave, and its second side surface S8 is concave.

[0100] The fifth lens L5 has positive optical power, and its first side surface S9 is convex, and its second side surface S10 is convex.

[0101] The sixth lens L6 has negative optical power, with its first side surface S11 being concave and its second side surface S12 being convex.

[0102] 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. A protective glass L7 is provided between the sixth lens L6 and the image plane IMA. The protective glass L7 has a first side surface S13 and a second side surface S14. Table 1 shows the basic parameters of the optical lens of Embodiment 1.

[0103] Table 1. Basic parameters of the optical lens in Example 1

[0104] Figure 15 In this context, T represents the meridian / tangential direction. From Figure 15 As can be seen, the optical lens of Example 1 achieves an MTF peak value of over 0.6 in the center field of view, over 0.4 in the 10.33° field of view, and over 0.1 in the 17.24° edge field of view at a spatial frequency of 119 lp / mm. The resolution quality of each field of view is excellent, achieving high imaging quality of eight million or even ten million pixels. Figure 16 The example illustrates the distortion values ​​of 435nm wavelength light under different fields of view of the optical lens of Example 1. Figure 16 The black dashed line in the middle represents the baseline where the distortion value is 0. From... Figure 16 As can be seen, the optical lens of Example 1 has less distortion at the edge of the field of view, which is beneficial to having a large angular resolution in each field of view and high imaging quality in each field of view. Figure 17 The example illustrates the relative illumination of the optical lens of Embodiment 1 in the Y-direction field of view. The Y-direction is the Y-axis direction of the optical lens's X, Y, and Z axes. From Figure 17 As can be seen, the optical lens of Example 1 achieves a relative illumination of over 60% at the edge of the field of view, exhibits strong brightness uniformity, and provides more uniform and clear imaging across all fields of view. Therefore, the optical lens provided in Example 1 possesses superior imaging quality.

[0105] Example 2 The following is for reference Figure 2 Describes an optical lens according to Embodiment 2 of this application. For example... Figure 2As shown, the main differences between this embodiment and Embodiment 1 are: the optical parameters such as the central radius of curvature and lens thickness of each lens surface are different; and the second side surface S6 of the third lens L3 is concave. Table 2 shows the basic parameters of the optical lens of Embodiment 2.

[0106] Table 2 Basic parameters of the optical lens in Example 2

[0107] The optical lens of Example 2 achieves a peak MTF of over 0.6 in the center field of view, over 0.4 in the 10.33° field of view, and over 0.1 in the edge field of view at a spatial frequency of 119 lp / mm. This demonstrates excellent resolution across all fields of view, achieving high imaging quality at the eight-million- or even ten-million-pixel level. The optical lens of Example 2 exhibits less distortion in the edge field of view, which is beneficial for achieving high angular resolution and high imaging quality in all fields of view. Furthermore, the relative illumination of the optical lens in Example 2 can reach over 60% in the edge field of view, resulting in strong brightness uniformity and more uniform and clear imaging across all fields of view. Therefore, the optical lens provided in Example 2 possesses superior imaging quality.

[0108] Example 3 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 differences between this embodiment and Embodiment 1 are: the optical parameters such as the central radius of curvature and lens thickness of each lens surface are different; the second side surface S2 of the first lens L1 is concave; the first side surface S5 of the third lens L3 is concave; and the second side surface S8 of the fourth lens L4 is convex. Table 3 shows the basic parameters of the optical lens of Embodiment 3.

[0109] Table 3. Basic parameters of the optical lens in Example 3

[0110] The optical lens of Example 3 achieves a peak MTF of over 0.6 in the center field of view, over 0.4 in the 10.33° field of view, and over 0.1 in the edge field of view at a spatial frequency of 119 lp / mm. This demonstrates excellent resolution across all fields of view, achieving high imaging quality at the eight-million- or even ten-million-pixel level. The optical lens of Example 3 exhibits less distortion in the edge field of view, which is beneficial for achieving high angular resolution and high imaging quality in all fields of view. Furthermore, the relative illumination of the optical lens in Example 3 can reach over 60% in the edge field of view, resulting in strong brightness uniformity and more uniform and clear imaging across all fields of view. Therefore, the optical lens provided in Example 3 possesses superior imaging quality.

[0111] Example 4 The following is for reference Figure 4 Describes an optical lens according to Embodiment 4 of this application. For example... Figure 4 As shown, the main differences between this embodiment and Embodiment 1 are: the optical parameters such as the central radius of curvature and lens thickness of each lens surface are different; the second side surface S6 of the third lens L3 is concave; and the first side surface S7 of the fourth lens L4 is convex. Table 4 shows the basic parameters of the optical lens of Embodiment 4.

[0112] Table 4. Basic parameters of the optical lens in Example 4

[0113] The optical lens of Example 4 achieves a peak MTF of over 0.6 in the center field of view, over 0.4 in the 10.33° field of view, and over 0.1 in the edge field of view at a spatial frequency of 119 lp / mm. This demonstrates excellent resolution across all fields of view, achieving high imaging quality at the eight-million- or even ten-million-pixel level. The optical lens of Example 4 exhibits less distortion in the edge field of view, which is beneficial for achieving high angular resolution and high imaging quality in all fields of view. Furthermore, the relative illumination of the optical lens in Example 4 can reach over 60% in the edge field of view, resulting in strong brightness uniformity and more uniform and clear imaging across all fields of view. Therefore, the optical lens provided in Example 4 possesses superior imaging quality.

[0114] Example 5 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 central radius of curvature and lens thickness of each lens surface are different; and the second side surface S12 of the sixth lens L6 is concave. Table 5 shows the basic parameters of the optical lens of Embodiment 5.

[0115] Table 5. Basic parameters of the optical lens in Example 5

[0116] The optical lens of Example 5 achieves a peak MTF of over 0.6 in the center field of view, over 0.4 in the 10.33° field of view, and over 0.1 in the edge field of view at a spatial frequency of 119 lp / mm. This demonstrates excellent resolution across all fields of view, achieving high imaging quality at the level of eight million or even ten million pixels. The optical lens of Example 5 exhibits less distortion in the edge field of view, which is beneficial for achieving high angular resolution and high imaging quality in all fields of view. Furthermore, the relative illumination of the optical lens in Example 5 can reach over 60% in the edge field of view, resulting in strong brightness uniformity and more uniform and clear imaging across all fields of view. Therefore, the optical lens provided in Example 5 possesses superior imaging quality.

[0117] Example 6 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 central radius of curvature and lens thickness of each lens surface are different. Table 6 shows the basic parameters of the optical lens of Embodiment 6.

[0118] Table 6 Basic parameters of the optical lens in Example 6

[0119] The optical lens of Example 6 achieves a peak MTF of over 0.6 in the center field of view, over 0.4 in the 10.33° field of view, and over 0.1 in the edge field of view at a spatial frequency of 119 lp / mm. This demonstrates excellent resolution across all fields of view, achieving high imaging quality at the eight-million- or even ten-million-pixel level. The optical lens of Example 6 exhibits less distortion in the edge field of view, which is beneficial for achieving high angular resolution and high imaging quality in all fields of view. Furthermore, the relative illumination of the optical lens in Example 6 can reach over 60% in the edge field of view, resulting in strong brightness uniformity and more uniform and clear imaging across all fields of view. Therefore, the optical lens provided in Example 6 possesses superior imaging quality.

[0120] Example 7 The following is for reference Figure 7 Describes 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 central radius of curvature and lens thickness of each lens surface are different. Table 7 shows the basic parameters of the optical lens of Embodiment 7.

[0121] Table 7 Basic parameters of the optical lens in Example 7

[0122] The optical lens of Example 7 achieves a peak MTF of over 0.6 in the center field of view, over 0.4 in the 10.33° field of view, and over 0.1 in the edge field of view at a spatial frequency of 119 lp / mm. This demonstrates excellent resolution across all fields of view, achieving high imaging quality at the level of eight million or even ten million pixels. The optical lens of Example 7 exhibits less distortion in the edge field of view, which is beneficial for achieving high angular resolution and high imaging quality in all fields of view. Furthermore, the relative illumination of the optical lens in Example 7 can reach over 60% in the edge field of view, resulting in strong brightness uniformity and more uniform and clear imaging across all fields of view. Therefore, the optical lens provided in Example 7 possesses superior imaging quality.

[0123] Example 8 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 central radius of curvature and lens thickness of each lens surface are different. Table 8 shows the basic parameters of the optical lens of Embodiment 8.

[0124] Table 8 Basic parameters of the optical lens in Example 8

[0125] The optical lens of Example 8 achieves a peak MTF of over 0.6 in the center field of view, over 0.4 in the 10.33° field of view, and over 0.1 in the edge field of view at a spatial frequency of 119 lp / mm. This demonstrates excellent resolution across all fields of view, achieving high imaging quality at the level of eight million or even ten million pixels. The optical lens of Example 8 exhibits less distortion in the edge field of view, which is beneficial for achieving high angular resolution and high imaging quality in all fields of view. Furthermore, the relative illumination of the optical lens in Example 8 can reach over 60% in the edge field of view, resulting in strong brightness uniformity and more uniform and clear imaging across all fields of view. Therefore, the optical lens provided in Example 8 possesses superior imaging quality.

[0126] Example 9 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 differences between this embodiment and Embodiment 1 are: the optical parameters such as the central radius of curvature and lens thickness of each lens surface are different; and the first side surface S1 of the first lens L1 is concave. Table 9 shows the basic parameters of the optical lens of Embodiment 9.

[0127] Table 9. Basic parameters of the optical lens in Example 9

[0128] The optical lens of Example 9 achieves a peak MTF of over 0.6 in the center field of view, over 0.4 in the 10.33° field of view, and over 0.1 in the edge field of view at a spatial frequency of 119 lp / mm. This demonstrates excellent resolution across all fields of view, achieving high imaging quality at the level of eight million or even ten million pixels. The optical lens of Example 9 exhibits less distortion in the edge field of view, which is beneficial for achieving high angular resolution and high imaging quality in all fields of view. Furthermore, the relative illumination of the optical lens of Example 9 can reach over 60% in the edge field of view, resulting in strong brightness uniformity and more uniform and clear imaging across all fields of view. Therefore, the optical lens provided in Example 9 possesses superior imaging quality.

[0129] Example 10 The following is for reference Figure 10 Describes an optical lens according to Embodiment 10 of this application. For example... Figure 10 As shown, the main differences between this embodiment and Embodiment 1 are: the optical parameters such as the central radius of curvature and lens thickness of each lens surface are different; and the second side surface S2 of the first lens L1 is concave. Table 10 shows the basic parameters of the optical lens of Embodiment 10.

[0130] Table 10 Basic parameters of the optical lens in Example 10

[0131] The optical lens of Example 10 achieves a peak MTF of over 0.6 in the center field of view, over 0.4 in the 10.33° field of view, and over 0.1 in the edge field of view at a spatial frequency of 119 lp / mm. This demonstrates excellent resolution across all fields of view, achieving high imaging quality at the level of eight million or even ten million pixels. The optical lens of Example 10 exhibits less distortion in the edge field of view, which is beneficial for achieving high angular resolution and high imaging quality in all fields of view. Furthermore, the relative illumination of the optical lens of Example 10 can reach over 60% in the edge field of view, resulting in strong brightness uniformity and more uniform and clear imaging across all fields of view. Therefore, the optical lens provided in Example 10 possesses superior imaging quality.

[0132] Example 11 The following is for reference Figure 11 Describes an optical lens according to Embodiment 11 of this application. For example... Figure 12 As shown, the main differences between this embodiment and Embodiment 1 are: the optical parameters such as the central radius of curvature and lens thickness of each lens surface are different; and the second side surface S2 of the first lens L1 is concave. Table 11 shows the basic parameters of the optical lens of Embodiment 11.

[0133] Table 11 Basic parameters of the optical lens in Example 11

[0134] The optical lens of Example 11 achieves a peak MTF of over 0.6 in the center field of view, over 0.4 in the 10.33° field of view, and over 0.1 in the edge field of view at a spatial frequency of 119 lp / mm. This results in excellent resolution across all fields of view, achieving high imaging quality at the level of eight million or even ten million pixels. The optical lens of Example 11 exhibits less distortion in the edge field of view, which is beneficial for achieving high angular resolution and high imaging quality in all fields of view. Furthermore, the relative illumination of the optical lens of Example 11 can reach over 60% in the edge field of view, resulting in strong brightness uniformity and more uniform and clear imaging across all fields of view. Therefore, the optical lens provided in Example 11 possesses superior imaging quality.

[0135] Example 12 The following is for reference Figure 12 Describes an optical lens according to Embodiment 12 of this application. For example... Figure 12 As shown, the main difference between this embodiment and Embodiment 1 is that the optical parameters such as the central radius of curvature and lens thickness of each lens surface are different. Table 12 shows the basic parameters of the optical lens of Embodiment 12.

[0136] Table 12 Basic parameters of the optical lens in Example 12

[0137] The optical lens of Example 12 achieves a peak MTF of over 0.6 in the center field of view, over 0.4 in the 10.33° field of view, and over 0.1 in the edge field of view at a spatial frequency of 119 lp / mm. This demonstrates excellent resolution across all fields of view, achieving high imaging quality at the level of eight million or even ten million pixels. The optical lens of Example 12 exhibits less distortion in the edge field of view, which is beneficial for achieving high angular resolution and high imaging quality in all fields of view. Furthermore, the relative illumination of the optical lens of Example 12 can reach over 60% in the edge field of view, resulting in strong brightness uniformity and more uniform and clear imaging across all fields of view. Therefore, the optical lens provided in Example 12 possesses superior imaging quality.

[0138] Example 13 The following is for reference Figure 13 Describes an optical lens according to Embodiment 13 of this application. For example... Figure 13As shown, the main differences between this embodiment and Embodiment 1 are: the optical parameters such as the central radius of curvature and lens thickness of each lens surface are different; the second side surface S2 of the first lens L1 is concave; a filter L8 is disposed between the sixth lens L6 and the protective glass L7; the filter L8 has a first side surface S15 and a second side surface S16. Table 13 shows the basic parameters of the optical lens of Embodiment 13.

[0139] Table 13 Basic parameters of the optical lens in Example 13

[0140] The optical lens of Example 13 achieves a peak MTF of over 0.6 in the center field of view, over 0.4 in the 10.33° field of view, and over 0.1 in the edge field of view at a spatial frequency of 119 lp / mm. This demonstrates excellent resolution across all fields of view, achieving high imaging quality at the level of eight million or even ten million pixels. The optical lens of Example 13 exhibits less distortion in the edge field of view, which is beneficial for achieving high angular resolution and high imaging quality in all fields of view. Furthermore, the relative illumination of the optical lens of Example 13 can reach over 60% in the edge field of view, resulting in strong brightness uniformity and more uniform and clear imaging across all fields of view. Therefore, the optical lens provided in Example 13 possesses superior imaging quality.

[0141] Example 14 The following is for reference Figure 14 Describes an optical lens according to Embodiment 14 of this application. For example... Figure 14 As shown, the main differences between this embodiment and Embodiment 1 are: the optical parameters such as the central radius of curvature and lens thickness of each lens surface are different; and the second side surface S2 of the first lens L1 is concave. Table 14 shows the basic parameters of the optical lens of Embodiment 14.

[0142] Table 14 Basic parameters of the optical lens in Example 14

[0143] The optical lens of Example 14 achieves a peak MTF of over 0.6 in the center field of view, over 0.4 in the 10.33° field of view, and over 0.1 in the edge field of view at a spatial frequency of 119 lp / mm. This demonstrates excellent resolution across all fields of view, achieving high imaging quality at the eight-million- or even ten-million-pixel level. The optical lens of Example 14 exhibits less distortion in the edge field of view, which is beneficial for achieving high angular resolution and high imaging quality in all fields of view. Furthermore, the relative illumination of the optical lens of Example 14 can reach over 60% in the edge field of view, resulting in strong brightness uniformity and more uniform and clear imaging across all fields of view. Therefore, the optical lens provided in Example 14 possesses superior imaging quality.

[0144] Tables 15 and 16 provide the basic parameters of the optical lenses in Examples 1-14, such as F, ENPD, TTL, DFOV, θ, H, BFL, DST, DMAX, D11, D12, D21, D22, D31, D32, D41, D42, D51, D52, D61, D62, ET2, FR51, FR52, Ctmax, and Ctmin. Wherein, D12 is the maximum aperture of the second side of the first lens corresponding to the maximum field of view of the optical lens, D21 is the maximum aperture of the first side of the second lens corresponding to the maximum field of view of the optical lens, D22 is the maximum aperture of the second side of the second lens corresponding to the maximum field of view of the optical lens, D31 is the maximum aperture of the first side of the third lens corresponding to the maximum field of view of the optical lens, D32 is the maximum aperture of the second side of the third lens corresponding to the maximum field of view of the optical lens, D41 is the maximum aperture of the first side of the fourth lens corresponding to the maximum field of view of the optical lens, D42 is the maximum aperture of the second side of the fourth lens corresponding to the maximum field of view of the optical lens, D51 is the maximum aperture of the first side of the fifth lens corresponding to the maximum field of view of the optical lens, D52 is the maximum aperture of the second side of the fifth lens corresponding to the maximum field of view of the optical lens, D61 is the maximum aperture of the first side of the sixth lens corresponding to the maximum field of view of the optical lens, and D62 is the maximum aperture of the second side of the sixth lens corresponding to the maximum field of view of the optical lens.

[0145] Table 15 Basic parameters of the optical lenses in Examples 1-7

[0146] Table 16 Basic parameters of the optical lenses in Examples 8-14

[0147] In summary, the relationships in each embodiment of Examples 1-14 satisfy the relationships shown in Tables 17 and 18.

[0148] Table 17 Relationships in Examples 1-7

[0149] Table 18 Relationships in Examples 8-14

[0150] This application also provides an electronic device, including 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.

[0151] 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 positive optical power; A second lens with positive optical power has a concave first side and a convex second side. A third lens with positive optical power; A fourth lens with negative optical power; A fifth lens with positive optical power has a convex first side and a convex second side. The sixth lens, which has negative optical power, has a concave first side surface; The optical lens has six lenses with optical power. The first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens are all all-glass spherical lenses; The optical lens satisfies the following relationships: 1.35≤F / ENPD≤1.7, 1.4≤TTL / F≤2.7, 0.85≤F3 / F≤1.8, -1.45≤F6 / F≤-0.45 and -1.2≤F4 / F≤-0.2; Wherein, F is the focal length of the entire optical lens group, ENPD is the entrance pupil diameter of the optical lens, TTL is the total optical length of the optical lens, F3 is the focal length of the third lens, F6 is the focal length of the sixth lens, and F4 is the focal length of the fourth lens.

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

3. The optical lens according to any one of claims 1 to 2, characterized in that, The total optical length (TTL) of the optical lens satisfies: 25 ≤ TTL / 1mm ≤ 35.

4. The optical lens according to any one of claims 1 to 2, characterized in that, The focal length F of the entire optical lens assembly and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: 1.2≤F / H≤2.

3.

5. The optical lens according to any one of claims 1 to 2, characterized in that, The image height H corresponding to the maximum field of view of the optical lens, the focal length F of the entire optical lens group, and the radian value θ of the maximum field of view of the optical lens satisfy: 0.8≤(H / 2) / (F×tan(θ / 2))≤1.

1.

6. The optical lens according to any one of claims 1 to 2, characterized in that, The air gap T34 between the third lens and the fourth lens satisfies the following condition with respect to the focal length F of the entire optical lens group: 0.045≤T34 / F≤0.

085.

7. The optical lens according to any one of claims 1 to 2, characterized in that, The focal length F1 of the first lens and the focal length F of the entire optical lens group satisfy: 1.6≤F1 / F≤3.

2.

8. The optical lens according to any one of claims 1 to 2, characterized in that, The focal length F5 of the fifth lens satisfies the following condition with the focal length F of the entire optical lens group: 0.4≤F5 / F≤1.

9. The optical lens according to any one of claims 1 to 2, characterized in that, The center curvature radius R22 of the second side surface of the second lens, the center thickness CT2 of the second lens, and the center curvature radius R21 of the first side surface of the second lens satisfy: -0.95≤R22 / (CT2-R21)≤-0.

65.

10. The optical lens according to any one of claims 1 to 2, characterized in that, The edge thickness ET2 of the second lens and the center thickness CT2 of the second lens satisfy the condition: 0.85≤ET2 / CT2≤1.

2.

11. The optical lens according to any one of claims 1 to 2, characterized in that, The central curvature radius R51 of the first side of the fifth lens, the air gap T45 between the fourth and fifth lenses, and the air gap T56 between the fifth and sixth lenses satisfy: 1.25≤R51 / (T45+T56)≤2.

8.

12. The optical lens according to any one of claims 1 to 2, characterized in that, The central radius of curvature R11 of the first side surface of the first lens, the central thickness CT1 of the first lens, and the central radius of curvature R12 of the second side surface of the first lens satisfy: 0 < |R11| / (CT1+|R12|)≤5.

8.

13. The optical lens according to any one of claims 1 to 2, characterized in that, The maximum value of the center thickness Ctmax from the first lens to the third lens and the minimum value of the center thickness Ctmin from the first lens to the third lens satisfy: 1.05≤Ctmax / Ctmin≤2.

2.

14. The optical lens according to any one of claims 1 to 2, characterized in that, The maximum field of view (DFOV) of the optical lens satisfies: 25 ≤ DFOV / 1° ≤ 45.

15. The optical lens according to any one of claims 1 to 2, characterized in that, The optical lens satisfies at least one of the following relationships: 50≤(DFOV×F) / H / 1°≤70, 4.5≤TTL / H / θ×1rad≤8.5, 2.2≤TTL / DMAX≤3.6, 0.5≤(F×θ) / D11 / 1rad≤1.25, 1≤D11 / H / θ ×1rad≤3, 0≤D11 / H / F×1mm≤0.1, 0≤|(HF×θ) / (F×θ)|×(1mm×1rad) / (1mm-1mm×1rad)≤0.16, 0≤BFL / TTL≤0.175, 0. 08≤F / ENPD / D11×1mm≤0.2, 0.5≤DST / F≤0.82, 0<F / F2≤0.15, -0.8≤F5 / F6≤-0.4, 1.05≤FR51 / F≤1.85, 1≤FR52 / F≤6, -0.25≤T56 / R52≤-0.035, 0.085≤T56 / F≤0.45, -2.5≤F3 / F4≤-1, 0.125≤R51 / (CT5-R52)≤0.6 or -1≤R61 / F≤-0.3; Wherein, DFOV is the maximum field of view of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, θ is the radian value of the maximum field of view of the optical lens, DMAX is the maximum value among the maximum apertures of each lens corresponding to the maximum field of view of the optical lens, D11 is the maximum aperture of the first side of the first lens corresponding to the maximum field of view of the optical lens, BFL is the optical back focal length of the optical lens, DST is the effective aperture of the aperture stop, F2 is the focal length of the second lens, F5 is the focal length of the fifth lens, FR51 is the image-side focal length of the first side of the fifth lens, FR52 is the image-side focal length of the second side of the fifth lens, T56 is the air gap between the fifth lens and the sixth lens, R52 is the central radius of curvature of the second side of the fifth lens, CT5 is the central thickness of the fifth lens, R51 is the central radius of curvature of the first side of the fifth lens, and R61 is the central radius of curvature of the first side of the sixth lens.

16. The optical lens according to any one of claims 1 to 2, characterized in that, The optical lens satisfies at least one of the following relationships: 56.648≤(DFOV×F) / H / 1°≤65.828, 1.783≤TTL / F≤2.492, 5.032≤TTL / H / θ×1rad≤7.064, 2.658≤TTL / DMAX≤3.202, 0.817≤(F ×θ) / D11 / 1rad≤0.936, 1.572≤D11 / H / θ×1rad≤2.423, 0.066≤D11 / H / F×1mm≤0.084, 0≤|(HF×θ) / (F×θ)|×(1mm×1rad) / (1mm -1mm×1rad)≤0.13, 0.022≤BFL / TTL≤0.138, 1.416≤F / H≤1.979, 1.4≤F / ENPD≤1.7, 0.125≤F / ENPD / D11×1mm≤0.167, 0.604≤ DST / F≤0.78, 0.844≤(H / 2) / (F×tan(θ / 2))≤0.99, 0.9≤F3 / F≤1.359, -1.176≤F6 / F≤-0.858, -1.072≤F4 / F≤-0.459, 0.053≤ T34 / F≤0.078, 1.8≤F1 / F≤2.949, 0.031≤F / F2≤0.092, 0.501≤F5 / F≤0.832, -0.707≤F5 / F6≤-0.497, -0.867≤R22 / (CT2-R21 )≤-0.782, 0.967≤ET2 / CT2≤1.003, 1.289≤FR51 / F≤1.657, 1.186≤FR52 / F≤5.494, -0.225≤T56 / R52≤-0.042, 1.523≤R51 / ( T45+T56)≤2.444, 0.106≤T56 / F≤0.396, -2.234≤F3 / F4≤-1.268, 0.011≤|R11| / (CT1+|R12|)≤4.889, 0.153≤R51 / (CT5-R52)≤0.525, -0.804≤R61 / F≤-0.414, 1.293≤Ctmax / Ctmin≤1.995, 28.0046≤TTL / 1mm≤34.0033 or 28.623≤DFOV / 1°≤40.1796; Wherein, DFOV is the maximum field of view of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, θ is the radian value of the maximum field of view of the optical lens, DMAX is the maximum value among the maximum apertures of each lens corresponding to the maximum field of view of the optical lens, D11 is the maximum aperture of the first side of the first lens corresponding to the maximum field of view of the optical lens, BFL is the optical back focal length of the optical lens, DST is the effective aperture of the aperture stop, T34 is the air gap between the third and fourth lenses, F1 is the focal length of the first lens, F2 is the focal length of the second lens, F5 is the focal length of the fifth lens, R22 is the center radius of curvature of the second side of the second lens, CT2 is the center thickness of the second lens, R21 is the center radius of curvature of the first side of the second lens, and ET2 is the edge thickness of the second lens. FR51 is the image-side focal length of the first side of the fifth lens, FR52 is the image-side focal length of the second side of the fifth lens, T56 is the air gap between the fifth lens and the sixth lens, R52 is the central radius of curvature of the second side of the fifth lens, R51 is the central radius of curvature of the first side of the fifth lens, T45 is the air gap between the fourth lens and the fifth lens, R11 is the central radius of curvature of the first side of the first lens, CT1 is the central thickness of the first lens, R12 is the central radius of curvature of the second side of the first lens, CT5 is the central thickness of the fifth lens, R61 is the central radius of curvature of the first side of the sixth lens, Ctmax is the maximum value of the central thickness from the first lens to the third lens, and Ctmin is the minimum value of the central thickness from the first lens to the third lens.

17. An electronic device, characterized in that, include: Optical lens according to any one of claims 1 to 16; 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