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 refractive power, the first side of which is a convex surface; a second lens with negative refractive power; a third lens with positive refractive power, the first side of which is a convex surface; a fourth lens with negative refractive power; a fifth lens with positive refractive power, the first side of which is a convex surface; and a sixth lens with negative refractive power, the first side of which is a concave surface. The number of lenses with refractive 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. The optical lens has high light flux and large aperture number, high resolving power, high imaging quality and high stability.

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. Automotive 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, the forward-facing camera of an Advanced Driver-Assistance System (ADAS) can automatically determine distance to other vehicles, perform timely braking and acceleration, or achieve automatic lane changing and collision warning.

[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 meet the diverse demands of large apertures and high light throughput, failing 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, the first side of which is convex; a second lens having negative optical power; a third lens having positive optical power; a fourth lens having negative optical power; a fifth lens having positive optical power, the first side of which is convex; and a sixth lens having negative optical power, the first side of which is concave; the optical lens having six lenses having optical power; and the first lens, second lens, third lens, fourth lens, fifth lens, and sixth lens are all... It is an all-glass spherical lens; the optical lens satisfies the following relationships: 1.35≤F / ENPD≤1.7, 1.4≤TTL / F≤2.6, 1≤F1 / F≤2.6, 0.45≤F3 / F≤1.25, -0.4≤F / F4<0 and -2.5≤F6 / F≤-0.78; 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, F1 is the focal length of the first lens, F3 is the focal length of the third lens, F4 is the focal length of the fourth lens, and F6 is the focal length of the sixth lens.

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

[0008] The letters in this application 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 apertures of the lenses 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, TL is the length from the center of the first side of the first lens to the center of the second side of the sixth lens, DST is the effective aperture of the aperture stop, R11 is the central radius of curvature of the first side of the first lens, R21 is the central radius of curvature of the first side of the second lens, FR51 is the image-side focal length of the first side of the fifth lens, R61 is the central radius of curvature of the first side of the sixth lens, T56 is the air gap between the fifth and sixth lenses, CT1 is the center thickness of the first lens, CT6 is the center thickness of the sixth lens, R12 is the central radius of curvature of the second side of the first lens, ET4 is the edge thickness of the fourth lens, and CT4 is the center thickness of the fourth lens.

[0009] According to an exemplary embodiment of this application, the central curvature radius R61 of the first side of the sixth lens and the air gap T56 between the fifth lens and the sixth lens satisfy: 0.45≤|R61| / T56≤4.4.

[0010] According to an exemplary embodiment of this application, the air gap T56 between the fifth lens and the sixth lens satisfies the following condition with respect to the focal length F of the entire optical lens group: 0.16≤T56 / F≤0.6.

[0011] According to an exemplary embodiment of this application, the center thickness CT1 of the first lens and the center thickness CT6 of the sixth lens satisfy: 1≤CT1 / CT6≤6.

[0012] According to an exemplary embodiment of this application, the central curvature radius R11 of the first side surface of the first lens, the central thickness CT1 of the first lens, and the central curvature radius R12 of the second side surface of the first lens satisfy: 0 < (R11 + CT1) / |R12| ≤ 0.55.

[0013] According to an exemplary embodiment of this application, the maximum field of view (DFOV) of the optical lens satisfies: 25 ≤ DFOV / 1° ≤ 45.

[0014] According to an exemplary embodiment of this application, the edge thickness ET4 of the fourth lens and the center thickness CT4 of the fourth lens satisfy: 0.78≤ET4 / CT4≤2.2.

[0015] According to an exemplary embodiment of this application, the total optical length (TTL) of the optical lens satisfies: 25 ≤ TTL / 1mm ≤ 38.

[0016] According to an exemplary embodiment of this application, 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 group satisfy: 0.04≤D11 / H / F×1mm≤0.1.

[0017] 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<|(HF×θ) / (F×θ)|×(1mm×1rad) / (1mm-1mm×1rad)≤0.05.

[0018] According to an exemplary embodiment of this application, the focal length F of the entire optical lens group, the entrance pupil diameter ENPD of the optical lens, and the maximum light-transmitting aperture D11 of the first side of the first lens corresponding to the maximum field of view of the optical lens satisfy: 0.1≤F / ENPD / D11×1mm≤0.18.

[0019] According to an exemplary embodiment of this application, the optical lens satisfies at least one of the following relationships: 52≤(DFOV×F) / H / 1°≤65, 4.2≤TTL / H / θ×1rad≤7.5, 2≤TTL / DMAX≤3.5, 0.7≤(F×θ) / D11 / 1rad≤1, 1.2≤D11 / H / θ×1rad≤2.8, 0.065≤BFL / TL≤0.14, 1.15≤F / H≤2.2, 0.35≤DST / F≤0.7, 0.85≤(H / 2) / (F×tan(θ / 2))≤1.1, 0.45≤R11 / F≤2.45, -1.4≤F / R21<0, 1≤FR51 / F≤2 or -0.9≤R61 / F≤-0.25.

[0020] According to an exemplary embodiment of this application, the optical lens satisfies at least one of the following relationships: 57.36≤(DFOV×F) / H / 1°≤59.251, 1.766≤TTL / F≤2.352, 4.848≤TTL / H / θ×1rad≤7.046, 2.595≤TTL / DMAX≤3.163, 0.813≤(F×θ) / D11 / 1rad≤0.87, 1.679≤D11 / H / θ×1rad ≤2.46, 0.067≤D11 / H / F×1mm≤0.088, 0.001≤|(HF×θ) / (F×θ)|×(1mm×1rad) / (1mm-1mm×1rad)≤0.033, 0. 082≤BFL / TL≤0.12, 1.46≤F / H≤1.99, 1.4≤F / ENPD≤1.7, 0.125≤F / ENPD / D11×1mm≤0.155, 0.439≤DST / F≤0 .62, 0.926≤(H / 2) / (F×tan(θ / 2))≤0.978, 1.003≤F1 / F≤2.293, 0.638≤F3 / F≤1.103, -0.385≤F / F4≤-0. 031, -1.581≤F6 / F≤-0.838, 0.661≤R11 / F≤2.113, -1.111≤F / R21≤-0.004, 1.251≤FR51 / F≤1.851, -0.72 ≤R61 / F≤-0.349, 0.826≤|R61| / T56≤3.748, 0.192≤T56 / F≤0.498, 1.136≤CT1 / CT6≤5.647, 0.074≤(R11+CT1) / |R12|≤0.476, 0.829≤ET4 / CT4≤2.086, 28.5467≤TTL / 1mm≤34.7923 or 28.6984≤DFOV / 1°≤40.5805.

[0021] 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.

[0022] The optical lens according to the embodiments of this application employs six lenses with optical power. The first lens has positive optical power and possesses extremely strong light-converging ability, capable of gathering beams at large incident angles and effectively reducing the optical burden on the rear lens group. The positive optical power of the first lens also optimizes image quality, counteracting the negative field curvature generated by the rear negative lens, thereby improving image clarity across the entire field of view. The first side surface of the first lens is convex, effectively converging light, reducing the aperture of the rear lens group, effectively mitigating ghosting and stray light effects, providing the main positive optical power contribution to the first lens, reducing spherical aberration, and preventing water and dust accumulation.

[0023] The second lens has negative optical power, which can neutralize the overcorrection-like aberration caused by the positive optical power of the first lens. The two form an optical cancellation effect, thereby reducing the spherical aberration and field curvature of the entire optical lens. The negative optical power of the second lens, together with the first lens, works together to control distortion and ensure that there is no distortion in the imaging and recognition.

[0024] The third lens has positive optical power, enabling secondary beam convergence and reducing the incident height of light, thereby reducing the aperture of subsequent lenses. The third lens can form an optical combination with the first and second lenses to further optimize chromatic aberration correction, with a particularly significant improvement in chromatic aberration at the edges of the field of view. The positive field curvature generated by the third lens can compensate for this, ensuring clear imaging across the entire field of view for the imaging chip. Simultaneously, the third lens can share the aberration correction load of the subsequent lens groups, reducing the correction pressure on back-end optical components. Furthermore, leveraging the positive optical power of the third lens, the aperture stop can be designed to be larger, effectively increasing the light intake of the optical lens.

[0025] The fourth lens has negative optical power, which can diverge the incident beam, optimize the optical path, and reduce the size of the rear lens group, meeting the needs of compact installation of automotive optical lenses. The fourth lens has negative optical power, which, together with the front lens group, eliminates chromatic aberration and reduces color ghosting at the edge of the image. At the same time, the spherical aberration and field curvature generated by the fourth lens cancel each other out with the residual aberration of the front positive lens group, balancing the distortion and coma of the entire optical lens system, so that the image is uniform and clear from the center to the edge of the image.

[0026] The fifth lens has positive optical power and is used to gather light, control the optical path, and reduce the size of the optical lens. The fifth lens also shares the aberration correction burden with the front group lenses, balancing spherical aberration, coma, and correcting distortion, thereby improving the image quality of the optical lens. The first side of the fifth lens is convex, collecting light at the widest possible angle, while also correcting and converging to reduce the aperture of the rear group lenses.

[0027] The sixth lens has negative optical power, which corrects residual field curvature of the optical lens, ensuring image sharpness. Simultaneously, the aberrations generated by the negative optical power of the sixth lens can balance the large number of higher-order aberrations accumulated in the front group, ensuring image quality balance and improving the resolving power of the optical lens. Furthermore, the negative optical power of the sixth lens can effectively control the light exit angle, preventing color cast. The first side of the sixth lens is concave, which collects light. Since the positive optical powers of the third, fourth, and fifth lenses converge a large amount of light and aberrations, the concave surface plays a corrective and balancing role.

[0028] 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.

[0029] 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≤2.6, 1≤F1 / F≤2.6, 0.45≤F3 / F≤1.25, -0.4≤F / F4<0, and -2.5≤F6 / F≤-0.78. This enables a low-cost vehicle-mounted telephoto lens that also achieves a large aperture and low sensitivity.

[0030] The focal length F of the entire optical lens assembly and the entrance pupil diameter ENPD of the optical lens satisfy the condition: 1.35≤F / ENPD≤1.7, which gives the optical lens a large aperture and enables it to adapt to low-light environments during use.

[0031] The total optical length and the total focal length F of the optical lens satisfy: 1.4≤TTL / F≤2.6, which balances the total optical length and the total focal length of the optical lens and achieves the telephoto and miniaturization characteristics required by the optical lens.

[0032] The focal length F1 of the first lens satisfies the following condition with the focal length F of the entire optical lens group: 1≤F1 / F≤2.6. The first lens can share the pressure of the rear lens group. The first lens can guide more light into the optical lens, increase the light throughput, and use the focal length distribution to correct light aberrations, thereby improving the resolution capability of the optical lens.

[0033] The focal length F3 of the third lens satisfies the following condition with the overall focal length F of the optical lens group: 0.45≤F3 / F≤1.25. This is beneficial for balancing the power distribution of the front and rear groups, ensuring that aberrations can be corrected by the third lens, and reducing the workload on other lenses. Furthermore, relying on the positive power characteristics of the third lens, the aperture stop can be designed to be larger, effectively increasing the amount of light entering the optical lens and achieving a large aperture.

[0034] The focal length F of the entire optical lens assembly and the focal length F4 of the fourth lens satisfy: -0.4≤F / F4<0. This not only balances the aberrations of the adjacent positive image of the fourth lens and improves the resolution of the optical lens, but also allows the light to continue to diverge moderately in a steady trend, which is conducive to filling the entrance pupil with light from the front, thus achieving a large aperture and low sensitivity of the optical 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: -2.5≤F6 / F≤-0.78. This can effectively correct field curvature and control distortion, while ensuring that light falls accurately on the imaging plane, ensuring the overall cleanliness of the image, and improving the resolving power of the optical lens. Attached Figure Description

[0036] 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. Figures 1-17 Schematic diagrams of the optical lenses according to Embodiments 1-17 of this application are shown respectively; Figure 18 The modulation transfer function (MTF) curve of the optical lens according to Embodiment 1 of this application is shown. Figure 19 A schematic diagram of the distortion of an optical lens according to Embodiment 1 of this application is shown; Figure 20 A schematic diagram of the relative illumination of an optical lens according to Embodiment 1 of this application is shown; Figure 21 A schematic diagram showing the center thickness and edge thickness of a fourth lens according to an embodiment of this application is provided.

[0037] 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

[0038] 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.

[0039] 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.

[0040] The features, principles and other aspects of this application are described in detail below.

[0041] 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.

[0042] 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.

[0043] In the example implementation, the first lens has positive optical power and extremely strong light-converging ability, capable of gathering large incident angle beams and effectively reducing the optical burden on the rear lens group. However, the positive optical power of the first lens significantly introduces various aberrations, with spherical aberration, coma, and distortion being the most prominent. However, the optical power of the first lens can reduce the size of the rear lens group, conversely reducing the difficulty of correcting various aberrations. In addition, the positive optical power of the first lens can optimize image quality, counteracting the negative field curvature generated by the rear negative lens, and improving image sharpness across the entire field of view. The first side of the first lens is convex, effectively converging light and reducing the aperture of the rear lens group; the convexity of the first side also effectively reduces ghosting and stray light effects, providing the main positive optical power contribution to the first lens, reducing spherical aberration, and preventing water and dust accumulation. The second side of the first lens is either concave or convex, and its shape, combined with the shape of the first side, controls the influence of primary spherical aberration; by controlling the surface shape of the second side of the first lens, the coma distribution caused by the first side of the first lens is controlled, 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 of the first lens, ensuring sharpness; by changing the light path through the surface shape of the second side of the first lens, it helps to improve chromatic aberration and stray light.

[0044] In the example implementation, the second lens has a negative optical power, which neutralizes the overcorrection-like aberrations caused by the positive optical power of the first lens. The two create an optical cancellation effect, thereby reducing spherical aberration and field curvature of the entire optical lens system. The negative optical power of the second lens, combined with the first lens, synergistically controls distortion, ensuring distortion-free image recognition. The first side of the second lens is concave, which corrects aberrations (field curvature) caused by the positive optical power of the first lens. Simultaneously, the concave first side of the second lens minimizes changes in the angle of incidence, optimizing the sensitivity of the second lens. The concave first side of the second lens can approach a planar surface. The second side of the second lens is concave, further correcting aberrations and fully utilizing the negative optical power, ensuring a good match and balance between the positive and negative optical powers of the optical lens. The concave second side of the second lens, along with its negative optical power, causes light to diverge after passing through it, allowing for different aperture settings to meet various needs. Alternatively, the second side of the second lens can be convex, forming a symmetrical structure with the first lens, which is beneficial for reducing aberrations, especially chromatic aberration, and can also effectively avoid large-angle ghosting produced by the first or second lens.

[0045] In the example embodiment, the third lens has positive optical power, enabling secondary beam convergence and reducing the incident light height, thereby reducing the aperture of subsequent lenses. The third lens can form an optical combination with the first and second lenses to further optimize chromatic aberration correction, with a particularly significant improvement in edge field-of-view chromatic aberration. The positive field curvature generated by the third lens can compensate for this, ensuring clear imaging across the entire field of view of the imaging chip. Simultaneously, the third lens can share the aberration correction load of the subsequent lens group, reducing the correction pressure on the back-end optical components. Furthermore, leveraging the positive optical power characteristic of the third lens, the aperture stop can be designed to be larger, effectively increasing the light intake of the optical lens. The first side surface of the third lens is convex or concave. The second side surface of the third lens is also convex or concave. A convex second side surface of the third lens effectively converges light rays, reducing the light height of the fourth lens and thus decreasing the aperture size of the rear lens.

[0046] In the example implementation, the fourth lens has negative optical power, which can diverge the incident beam, optimize the optical path, and reduce the size of the rear lens group, meeting the compact installation requirements of automotive optical lenses. The negative optical power of the fourth lens, together with the front lens group, eliminates chromatic aberration and reduces color ghosting at the image edges. Simultaneously, the spherical aberration and field curvature generated by the fourth lens cancel each other out with the residual aberrations of the front positive lens group, balancing the distortion and coma of the entire optical lens system, resulting in uniform and clear imaging from the center to the image edges. The first side of the fourth lens is concave or convex, effectively conforming to the incident light, reducing the angle of incidence, mitigating stray light and ghosting, and correcting transverse chromatic aberration and coma. The second side of the fourth lens is convex or concave. The second side of the fourth lens compensates for the higher-order aberrations (mainly spherical aberration and astigmatism) of the first side of the fourth lens. The second side of the fourth lens guides the light, reducing the incident height and power, preventing excessive angles of incidence on the infrared cut-off filter (IR), and preventing reflectivity shift. When light rays exiting from the second side of the third lens with positive optical power are incident on the concave surface of the first side of the fourth lens, they can be smoothly received, avoiding excessive compression of the light rays. When passing through the convex surface of the second side of the fourth lens, the light rays can still exit in a stable posture, avoiding excessive light refraction and reducing the sensitivity of the light trajectory at this point. This allows for a more stable response to problems such as the deviation of the ideal position of components during the assembly of the optical lens or during actual use.

[0047] In the example embodiment, the fifth lens has positive optical power, used to gather light rays, regulate the optical path, and reduce the size of the optical lens. The fifth lens shares the aberration correction burden of the front group lenses, balances spherical aberration and coma, and corrects distortion, thereby improving the imaging quality of the optical lens. The first side of the fifth lens is convex, collecting light rays at the largest possible angle, while simultaneously correcting and converging to reduce the aperture of the rear group lenses. The second side of the fifth lens is either concave or convex, which can further correct the light rays from the front group, while ensuring that light rays can enter the sixth lens within a normal range, preventing a shift in reflectivity due to the angle of incidence.

[0048] In the example implementation, the sixth lens has a negative optical power, which can correct the residual field curvature of the optical lens, ensuring the clarity of the image plane. Simultaneously, the aberrations generated by the negative optical power of the sixth lens can balance the large number of higher-order aberrations accumulated in the previous lenses, ensuring image quality balance and improving the resolving power of the optical lens. Furthermore, the negative optical power of the sixth lens can effectively control the light emission angle, preventing color cast. The first side of the sixth lens is concave, which can collect light. The positive optical powers of the third, fourth, and fifth lenses converge a large amount of light and aberrations, and the concave surface can play a certain corrective and balancing role. The second side of the sixth lens can be convex or concave, which can be matched with different combinations of optical powers from the previous lenses.

[0049] 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 lens aperture at the rear end of the optical lens, and lowers the assembly sensitivity of the optical lens.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] In an example embodiment, the optical lens may further include a filter 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.

[0054] 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).

[0055] In the example implementation, the total optical length (TTL) of the optical lens satisfies: 25 ≤ TTL / 1mm ≤ 38. Preferably, 28.5467 ≤ TTL / 1mm ≤ 34.7923. 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.

[0056] In the example implementation, the maximum field of view (DFOV) of the optical lens satisfies: 25 ≤ DFOV / 1° ≤ 45. Preferably, 28.6984 ≤ DFOV / 1° ≤ 40.5805. 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.

[0057] In the example implementation, the maximum field of view (DFOV) of the optical lens, 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: 52 ≤ (DFOV × F) / H / 1° ≤ 65. Preferably, 57.36 ≤ (DFOV × F) / H / 1° ≤ 59.251. Controlling the range of this relationship allows the optical lens to possess telephoto and large target surface characteristics, realizing the telephoto function of the lens and eight million or even ten million pixels.

[0058] 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 ≤ 2.6. Preferably, 1.766 ≤ TTL / F ≤ 2.352. 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.

[0059] 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: 4.2 ≤ TTL / H / θ × 1 rad ≤ 7.5. Preferably, 4.848 ≤ TTL / H / θ × 1 rad ≤ 7.046. 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.

[0060] 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 ≤ TTL / DMAX ≤ 3.5. Preferably, 2.595 ≤ TTL / DMAX ≤ 3.163. 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.

[0061] 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: 0.7 ≤ (F×θ) / D11 / 1rad ≤ 1. Preferably, 0.813 ≤ (F×θ) / D11 / 1rad ≤ 0.87. 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 optical lens, thereby reducing the imaging volume of the optical lens.

[0062] 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: 1.2 ≤ D11 / H / θ × 1rad ≤ 2.8. Preferably, 1.679 ≤ D11 / H / θ × 1rad ≤ 2.46. 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.

[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 focal length F of the entire optical lens assembly satisfy: 0.04≤D11 / H / F×1mm≤0.1. Preferably, 0.067≤D11 / H / F×1mm≤0.088. 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.

[0064] 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)≤0.05. Preferably, 0.001≤|(HF×θ) / (F×θ)|×(1mm×1rad) / (1mm-1mm×1rad)≤0.033. 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.

[0065] In the example embodiment, the optical back focal length BFL of the optical lens and the length TL from the center of the first side surface of the first lens to the center of the second side surface of the sixth lens satisfy: 0.065 ≤ BFL / TL ≤ 0.14. Preferably, 0.082 ≤ BFL / TL ≤ 0.12. By controlling the range of this relationship, while satisfying miniaturization, a certain amount of space is left for the rear end to achieve low sensitivity.

[0066] 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: 1.15 ≤ F / H ≤ 2.2. Preferably, 1.46 ≤ F / H ≤ 1.99. By controlling the range of this relationship, the optical lens possesses telephoto and large-area characteristics, realizing the telephoto function of the optical lens and eight million or even ten million pixels.

[0067] 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 can have a larger aperture, enabling it to adapt to low-light environments during use.

[0068] 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: 0.1 ≤ F / ENPD / D11 × 1mm ≤ 0.18. Preferably, 0.125 ≤ F / ENPD / D11 × 1mm ≤ 0.155. By controlling the range of this relationship, the optical lens can obtain a larger aperture while ensuring a smaller front aperture.

[0069] 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: 0.35 ≤ DST / F ≤ 0.7. Preferably, 0.439 ≤ DST / F ≤ 0.62. By controlling the range of this relationship, a larger ratio of aperture stop diameter to total focal length results in a larger aperture number for the optical lens.

[0070] In the example implementation, 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: 0.85≤(H / 2) / (F×tan(θ / 2))≤1.1. Preferably, 0.926≤(H / 2) / (F×tan(θ / 2))≤0.978. 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 resolving capability for each field of view.

[0071] 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 ​​≤ F1 / F ≤ 2.6. Preferably, 1.003 ≤ F1 / F ≤ 2.293. By controlling the range of this relationship, the first lens can share the pressure of the rear lens group, guide more light into the optical lens, increase light throughput, and correct light aberrations by utilizing focal length allocation, thereby improving the resolving power of the optical lens.

[0072] In the example embodiment, the focal length F3 of the third lens and the focal length F of the entire optical lens group satisfy: 0.45 ≤ F3 / F ≤ 1.25. Preferably, 0.638 ≤ F3 / F ≤ 1.103. Controlling the range of this relationship helps to balance the optical power distribution of the front and rear groups, ensuring that aberrations can be corrected by the third lens and sharing the burden on other lenses. Furthermore, relying on the positive optical power characteristics of the third lens, the aperture stop can be designed to be larger, effectively increasing the amount of light entering the optical lens and achieving a large aperture.

[0073] In the example implementation, the focal length F of the entire optical lens assembly and the focal length F4 of the fourth lens satisfy: -0.4 ≤ F / F4 < 0. Preferably, -0.385 ≤ F / F4 ≤ -0.031. Controlling the range of this relationship can not only balance the aberrations of the adjacent positive images of the fourth lens and improve the resolution quality of the optical lens, but also allow the light to continue to diverge moderately and steadily, which is conducive to filling the entrance pupil with light from the front, thus achieving a large aperture and low sensitivity of the optical lens.

[0074] In the example implementation, the focal length F6 of the sixth lens and the focal length F of the entire optical lens assembly satisfy: -2.5 ≤ F6 / F ≤ -0.78. Preferably, -1.581 ≤ F6 / F ≤ -0.838. Controlling the range of this relationship can effectively correct field curvature and control distortion, while ensuring that light falls accurately on the imaging plane, ensuring overall image cleanliness, and improving the resolving power of the optical lens.

[0075] In the example embodiment, the central radius of curvature R11 of the first side surface of the first lens and the focal length F of the entire optical lens group satisfy: 0.45 ≤ R11 / F ≤ 2.45. Preferably, 0.661 ≤ R11 / F ≤ 2.113. By controlling the range of this relationship, the central radius of curvature of the convex surface of the first side surface of the first lens is relatively small, which can effectively gather light rays, reduce the aperture of the rear lens group, provide the main positive optical power contribution for the first lens, reduce spherical aberration, and improve the resolving power of the optical lens.

[0076] In the example implementation, the focal length F of the entire optical lens assembly and the central radius of curvature R21 of the first side surface of the second lens satisfy: -1.4 ≤ F / R21 < 0. Preferably, -1.111 ≤ F / R21 ≤ -0.004. By controlling the range of this relationship, a gradual transition of optical power from the first lens to the second lens can be achieved, avoiding abrupt changes in beam trajectory that rapidly induce advanced coma and astigmatism.

[0077] 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 satisfy: 1 ​​≤ FR51 / F ≤ 2. Preferably, 1.251 ≤ FR51 / F ≤ 1.851. 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. Controlling the range of this relationship not only facilitates the smooth entry of light into the rear, increasing the light transmission of the optical lens and reducing light energy loss, but also corrects the aberrations caused by the concave surface in the front lens, thus improving image quality.

[0078] In the example embodiment, the central radius of curvature R61 of the first side surface of the sixth lens satisfies the following relationship with the focal length F of the entire optical lens group: -0.9 ≤ R61 / F ≤ -0.25. Preferably, -0.72 ≤ R61 / F ≤ -0.349. By controlling the range of this relationship, the surface shape of the first side surface of the sixth lens is curved to obtain a stronger light deflection capability, precisely control the chief ray angle (CRA), and fine-tune the field curvature and residual transverse chromatic aberration.

[0079] In the example implementation, the central radius of curvature R61 of the first side of the sixth lens and the air gap T56 between the fifth and sixth lenses satisfy: 0.45 ≤ |R61| / T56 ≤ 4.4. Preferably, 0.826 ≤ |R61| / T56 ≤ 3.748. By controlling the range of this relationship, the air gap between the positive fifth lens and the negative sixth lens is relatively large, and the first side of the sixth lens is more curved. The larger air gap between the fifth and sixth lenses allows light to evolve fully, and the concave surface of the curved first side of the sixth lens concentrates on completing the final correction of four items: distortion, transverse chromatic aberration, CRA, and residual field curvature.

[0080] 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 group: 0.16 ≤ T56 / F ≤ 0.6. Preferably, 0.192 ≤ T56 / F ≤ 0.498. Controlling the range of this relationship, and ensuring a larger air gap between the positive fifth lens and the negative sixth lens, is beneficial for the light rays after aberration correction by the fifth lens to travel a longer optical path, reducing the degree of light coupling between different fields of view, and improving the cleanliness of the final image.

[0081] In the example implementation, the center thickness CT1 of the first lens and the center thickness CT6 of the sixth lens satisfy: 1 ​​≤ CT1 / CT6 ≤ 6. Preferably, 1.136 ≤ CT1 / CT6 ≤ 5.647. The first lens is the first lens of the optical lens and has a positive optical power, while the sixth lens is the last lens of the optical lens and has a negative optical power. To control the range of this relationship, since the first lens has a gentle surface shape, in order to ensure sufficient optical power, under the same curvature ratio, the center thickness of the first lens needs to be appropriately increased to achieve the designed optical power; while making the sixth lens appropriately thinner can reduce its own temperature drift and prevent it from affecting the back-end aberration balance under high and low temperatures.

[0082] 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| ≤ 0.55. Preferably, 0.074 ≤ (R11 + CT1) / |R12| ≤ 0.476. Controlling the range of this relationship makes the shape of the first lens gentle, and the incident angle of light rays in each field of view is constrained to a lower level, which helps to reduce the generation of higher-order off-axis aberrations from the source and improve the overall imaging quality of the optical lens.

[0083] In the example embodiment, the edge thickness ET4 and the center thickness CT4 of the fourth lens satisfy: 0.78 ≤ ET4 / CT4 ≤ 2.2. Preferably, 0.829 ≤ ET4 / CT4 ≤ 2.086. A schematic diagram of ET4 and CT4 is shown below. Figure 21 As shown. By controlling the range of this relationship, the center thickness and edge thickness of the fourth lens are close, and the optical path difference of each field of view is adjusted, which helps to reduce imaging coupling and improve the image cleanliness.

[0084] In the example implementation, the optical lenses satisfy the following conditions: 1 ≤ F1 / F ≤ 2.6; the second lens has negative optical power, 0.45 ≤ F3 / F ≤ 1.25, -0.4 ≤ F / F4 < 0; and the fifth lens has positive optical power and -2.5 ≤ F6 / F ≤ -0.78. Lenses one through six are arranged in an alternating positive and negative configuration. The three negative lenses are distributed at the front, middle, and rear to form aberration correction for the entire optical lens. The first and sixth lenses, acting as the first and last lenses, complement each other in positive and negative power to control field curvature and distortion. The weak negative power of the fourth lens acts as a transition in the middle of the lens group, ensuring a smooth transition between the correction amounts of the front and rear groups. This joint constraint achieves the simultaneous 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.

[0085] 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.

[0086] Specific embodiments of the optical lens applicable to the above-described embodiments are further described below with reference to the accompanying drawings.

[0087] 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 second lens L2 and the third lens L3.

[0088] The first lens L1 has positive optical power, its first side surface S1 is convex, and its second side surface S2 is concave.

[0089] The second lens L2 has negative optical power, and its first side surface S3 is concave, and its second side surface S4 is concave.

[0090] The third lens L3 has positive optical power, and its first side surface S5 is convex, and its second side surface S6 is convex.

[0091] The fourth lens L4 has negative optical power, with its first side surface S7 being concave and its second side surface S8 being convex.

[0092] The fifth lens L5 has positive optical power, and its first side surface S9 is convex, and its second side surface S10 is convex.

[0093] The sixth lens L6 has negative optical power, with its first side surface S11 being concave and its second side surface S12 being convex.

[0094] 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.

[0095] Table 1. Basic parameters of the optical lens in Example 1

[0096] Figure 18 In this context, T represents the meridian / tangential direction. From Figure 18 As can be seen, the optical lens of Example 1 achieves a peak MTF of over 0.6 in the center field of view, over 0.4 in the 12.01° field of view, and over 0.2 in the 17.27° edge field of view at a spatial frequency of 119 lp / mm. It has good resolution quality in each field of view and achieves high imaging quality of eight million or even ten million pixels. Figure 19 The example illustrates the distortion values ​​of 436nm wavelength light under different fields of view of the optical lens of Example 1. Figure 19 The black dashed line in the middle represents the baseline where the distortion value is 0. From... Figure 19 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 have a large angular resolution in each field of view and high imaging quality in each field of view. Figure 20 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 20 As can be seen, the optical lens of Example 1 can achieve a relative illumination of over 60% (i.e., 0.6) at the edge field of view, exhibiting strong brightness uniformity and more uniform and clear imaging across all fields of view. Therefore, the optical lens provided in Example 1 has good imaging quality.

[0097] Example 2 The following is for reference Figure 2 Describes an optical lens according to Embodiment 2 of this application. For example... Figure 2 As shown, the main 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 a convex surface. Table 2 shows the basic parameters of the optical lens of Embodiment 2.

[0098] Table 2 Basic parameters of the optical lens in Example 2

[0099] 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 12.01° field of view, and over 0.2 in the edge field of view at a spatial frequency of 119 lp / mm. This results in good 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 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.

[0100] 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; and the second side surface S4 of the second lens L2 is a convex surface. Table 3 shows the basic parameters of the optical lens of Embodiment 3.

[0101] Table 3. Basic parameters of the optical lens in Example 3

[0102] 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 12.01° field of view, and over 0.2 in the edge field of view at a spatial frequency of 119 lp / mm. This results in good 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 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 of 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 excellent imaging quality.

[0103] 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 S2 of the first lens L1 is convex; the first side surface S5 of the third lens L3 is concave; and the second side surface S10 of the fifth lens L5 is concave. Table 4 shows the basic parameters of the optical lens of Embodiment 4.

[0104] Table 4. Basic parameters of the optical lens in Example 4

[0105] 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 12.01° field of view, and over 0.2 in the edge field of view at a spatial frequency of 119 lp / mm. This results in good 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 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 excellent imaging quality.

[0106] 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 S6 of the third lens L3 is concave. Table 5 shows the basic parameters of the optical lens of Embodiment 5.

[0107] Table 5. Basic parameters of the optical lens in Example 5

[0108] 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 12.01° field of view, and over 0.2 in the edge field of view at a spatial frequency of 119 lp / mm. This results in good 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 of 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 excellent imaging quality.

[0109] 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 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 first side surface S7 of the fourth lens L4 is convex and the second side surface S8 is concave; the second side surface S10 of the fifth lens L5 is concave. Table 6 shows the basic parameters of the optical lens of Embodiment 6.

[0110] Table 6 Basic parameters of the optical lens in Example 6

[0111] 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 12.01° field of view, and over 0.2 in the edge field of view at a spatial frequency of 119 lp / mm. This results in good 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 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 of 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 excellent imaging quality.

[0112] Example 7 The following is for reference Figure 7 Describes an optical lens according to Embodiment 7 of this application. For example... Figure 7As 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 S10 of the fifth lens L5 is concave. Table 7 shows the basic parameters of the optical lens of Embodiment 7.

[0113] Table 7 Basic parameters of the optical lens in Example 7

[0114] 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 12.01° field of view, and over 0.2 in the edge field of view at a spatial frequency of 119 lp / mm. This results in good 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 of 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 excellent imaging quality.

[0115] 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 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 8 shows the basic parameters of the optical lens of Embodiment 8.

[0116] Table 8 Basic parameters of the optical lens in Example 8

[0117] 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 12.01° field of view, and over 0.2 in the edge field of view at a spatial frequency of 119 lp / mm. This results in good 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 excellent imaging quality.

[0118] Example 9 The following is for reference Figure 9Describes an optical lens according to Embodiment 9 of this application. For example... Figure 9 As shown, the main difference between this embodiment and Embodiment 1 is that the optical parameters such as the central radius of curvature and lens thickness of each lens surface are different. Table 9 shows the basic parameters of the optical lens of Embodiment 9.

[0119] Table 9. Basic parameters of the optical lens in Example 9

[0120] 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 12.01° field of view, and over 0.2 in the edge field of view at a spatial frequency of 119 lp / mm. This results in good 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 excellent imaging quality.

[0121] 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 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 10 shows the basic parameters of the optical lens of Embodiment 10.

[0122] Table 10 Basic parameters of the optical lens in Example 10

[0123] 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 12.01° field of view, and over 0.2 in the edge field of view at a spatial frequency of 119 lp / mm. This results in good 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 excellent imaging quality.

[0124] Example 11 The following is for reference Figure 11Describes an optical lens according to Embodiment 11 of this application. For example... Figure 11 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 11 shows the basic parameters of the optical lens of Embodiment 11.

[0125] Table 11 Basic parameters of the optical lens in Example 11

[0126] 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 12.01° field of view, and over 0.2 in the edge field of view at a spatial frequency of 119 lp / mm. This results in good 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 excellent imaging quality.

[0127] 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.

[0128] Table 12 Basic parameters of the optical lens in Example 12

[0129] 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 12.01° field of view, and over 0.2 in the edge field of view at a spatial frequency of 119 lp / mm. This results in good 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 excellent imaging quality.

[0130] Example 13 The following is for reference Figure 13 Describes an optical lens according to Embodiment 13 of this application. For example... Figure 13 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 13 shows the basic parameters of the optical lens of Embodiment 13.

[0131] Table 13 Basic parameters of the optical lens in Example 13

[0132] 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 12.01° field of view, and over 0.2 in the edge field of view at a spatial frequency of 119 lp / mm. This results in good 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 excellent imaging quality.

[0133] 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 S10 of the fifth lens L5 is concave. Table 14 shows the basic parameters of the optical lens of Embodiment 14.

[0134] Table 14 Basic parameters of the optical lens in Example 14

[0135] 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 12.01° field of view, and over 0.2 in the edge field of view at a spatial frequency of 119 lp / mm. This results in good 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 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 excellent imaging quality.

[0136] Example 15 The following is for reference Figure 15 Describes an optical lens according to Embodiment 15 of this application. For example... Figure 15 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 15 shows the basic parameters of the optical lens of Embodiment 15.

[0137] Table 15 Basic parameters of the optical lens in Example 15

[0138] The optical lens of Example 15 achieves a peak MTF of over 0.6 in the center field of view, over 0.4 in the 12.01° field of view, and over 0.2 in the edge field of view at a spatial frequency of 119 lp / mm. This results in good 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 15 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 15 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 15 possesses excellent imaging quality.

[0139] Example 16 The following is for reference Figure 16 Describes an optical lens according to Embodiment 16 of this application. For example... Figure 16 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 a filter L8 is provided 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 16 shows the basic parameters of the optical lens of Embodiment 16.

[0140] Table 16 Basic parameters of the optical lens in Example 16

[0141] The optical lens of Example 16 achieves a peak MTF of over 0.6 in the center field of view, over 0.4 in the 12.01° field of view, and over 0.2 in the edge field of view at a spatial frequency of 119 lp / mm. This results in good 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 16 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 16 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 16 possesses excellent imaging quality.

[0142] Example 17 The following is for reference Figure 17 Describes an optical lens according to Embodiment 17 of this application. For example... Figure 17 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 17 shows the basic parameters of the optical lens of Embodiment 17.

[0143] Table 17 Basic parameters of the optical lens in Example 17

[0144] The optical lens of Example 17 achieves a peak MTF of over 0.6 in the center field of view, over 0.4 in the 12.01° field of view, and over 0.2 in the edge field of view at a spatial frequency of 119 lp / mm. This results in good 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 17 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 17 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 17 possesses excellent imaging quality.

[0145] Tables 18-1 and 18-2 provide the basic parameters of the optical lenses in Examples 1-17, such as F, ENPD, TTL, DFOV, θ, H, BFL, TL, DST, DMAX, D11, D12, D21, D22, D31, D32, D41, D42, D51, D52, D61, D62, FR51, and ET4. 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.

[0146] Table 18-1 Basic parameters of the optical lenses in Examples 1-9

[0147] Table 18-2 Basic parameters of the optical lenses in Examples 10-17

[0148] In summary, the relationships in each embodiment of Examples 1-17 satisfy the relationships shown in Tables 19-1 and 19-2.

[0149] Table 19-1 Relationships in Examples 1-9

[0150] Table 19-2 Relationships in Examples 10-17

[0151] 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.

[0152] 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 has a convex first side surface; A second lens with negative optical power; A third lens with positive optical power; A fourth lens with negative optical power; The fifth lens with positive optical power has a convex first side surface; 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≤2.6, 1≤F1 / F≤2.6, 0.45≤F3 / F≤1.25, -0.4≤F / F4<0 and -2.5≤F6 / F≤-0.78; 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, F1 is the focal length of the first lens, F3 is the focal length of the third lens, F4 is the focal length of the fourth lens, and F6 is the focal length of the sixth lens.

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

3. The optical lens according to any one of claims 1 to 2, characterized in that, The central curvature radius R61 of the first side of the sixth lens and the air gap T56 between the fifth lens and the sixth lens satisfy: 0.45≤|R61| / T56≤4.

4.

4. The optical lens according to any one of claims 1 to 2, characterized in that, The air gap T56 between the fifth lens and the sixth lens satisfies the following condition with respect to the focal length F of the entire optical lens group: 0.16≤T56 / F≤0.

6.

5. The optical lens according to any one of claims 1 to 2, characterized in that, The center thickness CT1 of the first lens and the center thickness CT6 of the sixth lens satisfy the following condition: 1≤CT1 / CT6≤6.

6. 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| ≤ 0.

55.

7. 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.

8. The optical lens according to any one of claims 1 to 2, characterized in that, The edge thickness ET4 of the fourth lens and the center thickness CT4 of the fourth lens satisfy the following condition: 0.78≤ET4 / CT4≤2.

2.

9. 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 ≤ 38.

10. The optical lens according to any one of claims 1 to 2, characterized in that, 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 group satisfy: 0.04≤D11 / H / F×1mm≤0.

1.

11. 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<|(HF×θ) / (F×θ)|×(1mm×1rad) / (1mm-1mm×1rad)≤0.

05.

12. The optical lens according to any one of claims 1 to 2, characterized in that, The focal length F of the entire optical lens group, the entrance pupil diameter ENPD of the optical lens, and the maximum light-transmitting aperture D11 of the first side of the first lens corresponding to the maximum field of view of the optical lens satisfy: 0.1≤F / ENPD / D11×1mm≤0.

18.

13. 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: 52≤(DFOV×F) / H / 1°≤65, 4.2≤TTL / H / θ×1rad≤7.5, 2≤TTL / DMAX≤3.5, 0.7≤(F×θ) / D11 / 1rad≤1, 1.2≤D11 / H / θ×1rad≤2.8, 0.065≤BFL / TL≤0.14, 1.15≤F / H≤2.2, 0.35≤DST / F≤0.7, 0.85≤(H / 2) / (F×tan(θ / 2))≤1.1, 0.45≤R11 / F≤2.45, -1.4≤F / R21<0, 1≤FR51 / F≤2 or -0.9≤R61 / F≤-0.25; 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, TL is the length from the center of the first side of the first lens to the center of the second side of the sixth lens, DST is the effective aperture of the aperture stop, R11 is the central radius of curvature of the first side of the first lens, R21 is the central radius of curvature of the first side of the second lens, FR51 is the image-side focal length of the first side of the fifth lens, and R61 is the central radius of curvature of the first side of the sixth lens.

14. 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: 57.36≤(DFOV×F) / H / 1°≤59.251, 1.766≤TTL / F≤2.352, 4.848≤TTL / H / θ×1rad≤7.046, 2.595≤TTL / DMAX≤3.163, 0.813≤(F×θ) / D11 / 1rad≤0.87, 1.679≤D11 / H / θ×1rad≤2.46, 0.067≤D11 / H / F×1mm≤0. 088, 0.001≤|(HF×θ) / (F×θ)|×(1mm×1rad) / (1mm-1mm×1rad)≤0.033, 0.082≤BFL / TL≤0.12, 1.46≤ F / H≤1.99, 1.4≤F / ENPD≤1.7, 0.125≤F / ENPD / D11×1mm≤0.155, 0.439≤DST / F≤0.62, 0.926≤(H / 2) / ( F×tan(θ / 2))≤0.978, 1.003≤F1 / F≤2.293, 0.638≤F3 / F≤1.103, -0.385≤F / F4≤-0.031, -1.581≤F6 / F≤-0.838, 0.661≤R11 / F≤2.113, -1.111≤F / R21≤-0.004, 1.251≤FR51 / F≤1.851, -0.72≤R61 / F≤-0 0.349, 0.826≤|R61| / T56≤3.748, 0.192≤T56 / F≤0.498, 1.136≤CT1 / CT6≤5.647, 0.074≤(R11+CT1) / |R12|≤0.476, 0.829≤ET4 / CT4≤2.086, 28.5467≤TTL / 1mm≤34.7923 or 28.6984≤DFOV / 1°≤40.5805; 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, TL is the length from the center of the first side of the first lens to the center of the second side of the sixth lens, DST is the effective aperture of the aperture stop, and R1... R1 is the center radius of curvature of the first side surface of the first lens, R21 is the center radius of curvature of the first side surface of the second lens, FR51 is the image-side focal length of the first side surface of the fifth lens, R61 is the center radius of curvature of the first side surface of the sixth lens, T56 is the air gap between the fifth lens and the sixth lens, CT1 is the center thickness of the first lens, CT6 is the center thickness of the sixth lens, R12 is the center radius of curvature of the second side surface of the first lens, ET4 is the edge thickness of the fourth lens, and CT4 is the center thickness of the fourth lens.

15. An electronic device, characterized in that, include: Optical lens according to any one of claims 1 to 14; 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