Optical lens and electronic device

Abstract

The application discloses an optical lens and an electronic device. The optical lens comprises first to sixth lenses in sequence from a first side to a second side along an optical axis. The first lens has a negative focal power, the second lens has a positive focal power, the third lens has a positive focal power, the fifth lens has a positive focal power, the fourth lens and the sixth lens both have a focal power, the second side of the first lens is a concave surface, at least one surface of each of the second to fifth lenses is a convex surface, the first side of the sixth lens is a convex surface, and the optical lens satisfies 0.04 <= (T23+T34+T45+T56) / TTL <= 0.17 and -0.96 <= (1 / F1+1 / F2+1 / F3) / (1 / F4+1 / F5+1 / F6) <= -0.45.

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 development of intelligent driving technology, most cars are now equipped with LiDAR lenses. To avoid blind spots, blind spot radar is essential. Compared with conventional main radar, blind spot radar has a larger field of view (FOV), a smaller aperture, and more aspherical lenses, resulting in higher costs and making it less suitable for various application requirements. Furthermore, due to the limited space available for blind spot radar inside the vehicle, the lens size needs to be minimized while maintaining the same field of view. Summary of the Invention

[0003] The first aspect of this application provides an optical lens comprising, sequentially from a first side to a second side along an optical axis: a first lens having negative optical power, wherein a first side surface of the first lens is convex or concave, and a second side surface of the first lens is concave; a second lens having positive optical power, wherein at least one of the first side surface and the second side surface of the second lens is convex; a third lens having positive optical power, wherein at least one of the first side surface and the second side surface of the third lens is convex; a fourth lens having optical power, wherein at least one of the first side surface and the second side surface of the fourth lens is convex; a fifth lens having positive optical power, wherein at least one of the first side surface and the second side surface of the fifth lens is convex; and a sixth lens having optical power, wherein a first side surface of the sixth lens is convex, and a second side surface of the sixth lens is either convex or concave; wherein the optical lens comprises the following components: a first lens having negative optical power, a second lens having negative optical power, a third lens having positive optical power, and a fourth lens having positive optical power, wherein at least one of the first side surface and the second side surface of the sixth lens is convex or concave; and a fifth lens having positive optical power, wherein at least one of the first side surface and the second side surface of the fifth lens is convex; and a sixth lens having positive optical power, wherein a third lens has positive optical power, a fourth lens having positive optical power, and a fifth lens having positive optical power, wherein a fifth lens has positive optical power, and a sixth lens having positive optical power, wherein a sixth lens has positive optical power, and a sixth lens having positive optical power, wherein a sixth lens has positive optical power, and a sixth lens having negative ... The number of lenses is six; the optical lens satisfies: 0.04≤(T23+T34+T45+T56) / TTL≤0.17 and -0.96≤(1 / F1+1 / F2+1 / F3) / (1 / F4+1 / F5+1 / F6)≤-0.45; where T23 is the axial distance between the second side surface of the second lens and the first side surface of the third lens, T34 is the axial distance between the second side surface of the third lens and the first side surface of the fourth lens, T45 is the axial distance between the second side surface of the fourth lens and the first side surface of the fifth lens, TTL is the total optical length of the optical lens, F1 is the focal length of the first lens, F2 is the focal length of the second lens, F3 is the focal length of the third lens, F4 is the focal length of the fourth lens, F5 is the focal length of the fifth lens, and F6 is the focal length of the sixth lens.

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

[0005] The first lens has a negative optical power, which diverges the received light, separating the central and peripheral rays from each field of view. The second side of the first lens is concave; at the same field of view, the light emitted from the concave second side of the first lens provides a larger light-receiving surface for the rear optical system, resulting in greater light intake and increased image illumination. Light emitted from the first lens enters the second lens, which has a positive optical power and converges the light. Light emitted from the second side of the second lens enters the third lens, which has a positive optical power and further converges the light, smoothing the optical path within the lens group. Light emitted from the second side of the third lens enters the rear optical system; the fifth lens, with its positive optical power, converges the light and further smooths the optical path, while the sixth lens, with its convex first side, effectively receives the light emitted from the second side of the fifth lens, ensuring sufficient illumination at the rear of the lens. Furthermore, by controlling the optical lens to satisfy 0.04≤(T23+T34+T45+T56) / TTL≤0.17, this ratio, representing the proportion of the cumulative air gap between the second to sixth lenses to the total optical length (TTL), is limited to a very small range, indicating a highly integrated lens design. On one hand, constraining the lower limit of this ratio ensures that the lenses retain the most basic micro-gap, which is an indispensable degree of freedom for adjusting the optical path and correcting astigmatism and field curvature, preventing the loss of aberration correction capability due to close contact of lenses. On the other hand, constraining the upper limit of this ratio forces extremely high space utilization, strictly limiting the cumulative length of the central structure, indicating that the optical power is strong and the aberration correction task is mainly undertaken by the surface shape and aspherical capabilities of the lenses themselves, rather than relying on long spacing. This directly leads to the total optical length (TTL) being compressed to the extreme, which is the key to achieving an ultra-thin lens. By controlling the optical lens to meet the condition -0.96≤(1 / F1+1 / F2+1 / F3) / (1 / F4+1 / F5+1 / F6)≤-0.45, the light refraction path can be precisely adjusted within this range. This achieves the purpose of a large field of view lens, specifically suppressing spherical aberration, coma, astigmatism, and distortion under a large FOV, avoiding blurring at the center of the image, ensuring uniform intensity and clear details of the echo signal received by the lidar, improving the resolution capability for distant and small-sized targets, and meeting the accurate identification requirements of blind spot filling scenarios. On the one hand, controlling the upper limit of this ratio can prevent insufficient front group optical power and prevent a decrease in center resolution; on the other hand, controlling the lower limit of this ratio can prevent excessive front group optical power and avoid edge resolution collapse. Attached Figure Description

[0006] 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.

[0007] Figures 1 to 25Schematic diagrams of the optical lenses according to Embodiments 1 to 25 of this application are shown respectively;

[0008] Figure 26A and Figure 26B The modulation transfer function curve and dot plot according to Embodiment 2 of this application are shown respectively;

[0009] Figure 27A and Figure 27B The modulation transfer function curve and dot plot according to Embodiment 6 of this application are shown respectively;

[0010] Figure 28A and Figure 28B The modulation transfer function curve and dot plot of Embodiment 24 according to this application are shown respectively. Detailed Implementation

[0011] To better understand this application, various aspects of this application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of this application and are not intended to limit the scope of this application in any way. Throughout the specification, the same reference numerals refer to the same elements. 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 the spherical or aspherical surfaces shown in the drawings are illustrated by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustrative purposes only and are not strictly drawn to scale. 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." 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.

[0012] The features, principles and other aspects of this application are described in detail below.

[0013] 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.

[0014] In an exemplary embodiment, the optical lens provided in this application can be used as a light receiving lens or a light emitting lens, wherein: the light receiving lens is generally used to collect light from the first side space of the lens, and the collected light is used to form detection information, including but not limited to imaging, laser point clouds, etc.; the light emitting lens is generally used to transmit light from the light emitting unit to the first side space, and the light transmitted to the first side space can be divided into projection light for forming a projected image or detection light for detecting target information, etc., according to the function of the light.

[0015] It is understood that when the optical lens provided in this application is used as a light-receiving lens such as a camera lens, a lidar receiver lens, a microscope lens, or a telescope lens, the term "first side" as used herein may refer to the object side, and "second side" may refer to the image side (such as the side where a photoelectric sensor or retina is located). That is, light from the object side can, for example, form an image on the image side. A camera lens may be, for example, a vehicle-mounted camera, an infrared camera, a drone camera, a night vision camera, a security monitoring camera, etc. When the optical lens provided in this application is used as a light-emitting lens such as a projection lens or a lidar transmitter lens, the term "first side" as used herein may refer to the object side, and "second side" may refer to the light source side.

[0016] In some possible implementations, the optical lens provided in this application can also simultaneously perform both light receiving and light transmitting functions. For example, the optical lens provided in this application is used in a lidar system with shared light and light paths, where the optical lens simultaneously performs the functions of emitting laser light and receiving radar echo beams. As another example, the optical lens provided in this application is used in a system integrating optical communication and radar, where the optical lens simultaneously performs the functions of emitting modulated optical signals and receiving radar echo beams.

[0017] In the example, the first lens has a negative optical power, and the first and second side surfaces are convex and concave, respectively. Negative optical power has the effect of diverging light rays, dispersing the central and peripheral rays of each field of view. The combination of negative optical power and a convex-concave surface diverges incident light rays, increasing the amount of light entering the lens and improving the overall illumination of the image. This also allows the outgoing light rays to enter the rear lens group with a smoother trajectory, reducing sensitivity. Furthermore, the convex shape of the first side surface helps reduce water droplet sliding.

[0018] In the example, the first lens has negative optical power, and the first and second sides are concave and concave surfaces, respectively. The negative optical power combined with the double concave surface structure initially diverges the incident light beam, balances the light-gathering ability of the subsequent positive optical power lenses, corrects aberrations in advance, and optimizes the optical path to shorten the system length. The double concave lens structure can collect edge light rays incident at large angles, reduce the light transmission pressure of subsequent lenses, achieve lens miniaturization, reduce reflection loss, improve light transmission efficiency, ensure consistent image quality across the entire field of view, and adapt to the needs of a large field of view.

[0019] In the example, the second lens has positive optical power, and the first and second sides are convex and concave, respectively. Positive optical power combined with a convex-concave surface can converge light while ensuring smooth light emission, thus reducing the system's sensitivity.

[0020] In the example, the second lens has positive optical power, and the first and second sides are convex and convex, respectively. The positive optical power combined with the biconvex shape converges and gathers the light beam, allowing the light to quickly transition to the rear system and reducing the aperture of the rear system.

[0021] In the example, the second lens has positive optical power, and its first and second sides are concave and convex, respectively. The positive optical power combined with the concave-convex surface shape receives the light emitted from the first lens, eliminates undesirable light rays at the edges, and allows the increased effective light rays to transition smoothly backward.

[0022] In the example, the third lens has positive optical power, and the first and second sides are convex and concave, respectively. The positive optical power combined with the convex and concave surface design fully receives the light from the front group and expands the beams of each field of view before they are incident on the rear group, thus improving edge image quality.

[0023] In the example, the third lens has positive optical power, and the first and second sides are convex and convex, respectively. The positive optical power combined with the biconvex shape allows for rapid collection and convergence of light, reducing the rear port diameter and enabling rapid light transition, thus achieving miniaturization and reducing system size.

[0024] In the example, the third lens has positive optical power, and the first and second sides are concave and convex, respectively. The positive optical power combined with the concave and convex surface shapes receives the light rays from the front group and softens the light trajectory, corrects the light rays at the edge of the field of view, and improves resolution.

[0025] In the example, the fourth lens has positive optical power, and the first and second sides are convex and concave, respectively. The positive optical power combined with the convex and concave surface, along with the positive third lens, results in smoother beam paths at the edges of the field of view, correcting edge field aberrations.

[0026] In the example, the fourth lens has positive optical power, and the first and second sides are concave and convex, respectively. The positive optical power combined with the concave and convex surface shape makes the edge light rays travel more smoothly, corrects edge field aberrations, achieves high system resolution, and further converges the outgoing light rays, which helps to reduce the aperture of the fifth lens and achieve low cost and miniaturization of the system.

[0027] In the example, the fourth lens has positive optical power, and the first and second sides are convex and convex, respectively. The positive optical power combined with the biconvex shape receives and gathers the front beam, enhances the convergence of the emitted light, balances the system's optical power, and improves image clarity.

[0028] In the example, the fourth lens has negative optical power, and the first and second sides are convex and concave, respectively. The negative optical power combined with the convex and concave surface shape receives the large-angle beams from the front group and smooths the light path, providing initial resolution and balancing the redundant positive optical power of the first two lenses.

[0029] In the example, the fifth lens has positive optical power, and the first and second sides are concave and convex, respectively. The combination of positive optical power and concave-convex surface shape allows the front group to converge light rays, improving resolution, while further converging the outgoing light rays helps to achieve lens miniaturization.

[0030] In the example, the fifth lens has positive optical power, and the first and second sides are convex and concave, respectively. The positive optical power combined with the convex and concave surface design receives and appropriately diffuses the light from the front group, improving resolution. The overall light path converges, promoting lens miniaturization.

[0031] In the example, the fifth lens has positive optical power, and its first and second sides are convex and convex, respectively. The positive optical power combined with the biconvex shape concentrates the light rays from the front group to reduce the resolving pressure on the fourth lens, and smooths the trajectory of the outgoing light rays to alleviate the resolving pressure on the sixth lens.

[0032] In the example, the sixth lens has positive optical power, and the first and second sides are convex and concave, respectively. The positive optical power combined with the convex-concave shape converges the front group of light rays and forms an image, while the concave side is used to suppress edge field distortion and field curvature, balancing aberrations across the entire field of view.

[0033] In the example, the sixth lens has positive optical power, and its first and second sides are convex and convex, respectively. The positive optical power combined with the biconvex shape converges the light rays from the front group to reduce the resolving pressure on the fifth lens, and works with the fourth lens to correct aberrations and spherical aberrations, thereby improving image quality.

[0034] In the example, the sixth lens has a negative optical power, and the first and second sides are convex and concave, respectively. The negative optical power combined with the convex and concave surface shape balances the positive optical power of the system, avoids over-focusing or image plane shift, corrects cumulative aberrations, and improves image quality.

[0035] In the example, the aperture stop can be positioned, for instance, between the third and fourth lenses. This facilitates a smooth transition of light to the rear of the system, reduces the aperture of the rear lens, and lowers the sensitivity of the optical lens during assembly. It should be understood that the placement of the aperture stop between the third and fourth lenses is merely exemplary, and this application does not impose any specific limitations on it. The aperture stop can be positioned in other locations as needed.

[0036] In the example, the sixth lens has at least one inflection point on each of its two sides. This allows edge rays to converge better to the image plane, effectively reducing aberrations such as coma and field curvature, increasing the angle between the upper and lower rays in the edge field of view, and improving relative illumination.

[0037] In the example, both sides of the sixth lens are aspherical, which can reasonably control the light refraction in each field of view, effectively reduce various aberrations such as spherical aberration, coma, and distortion, and improve the performance of the optical lens.

[0038] In the example, the optical lens may also 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 protective glass between the filter and the image plane to prevent damage to internal components (e.g., chips) of the optical lens.

[0039] In the example, the optical lens may further include a photosensitive element disposed on the second side. Optionally, the photosensitive element disposed on the second side may be a photocoupled device (CCD) or a complementary metal oxide semiconductor device (CMOS).

[0040] In this application, the parameters of the optical lens are defined as follows: FOV is the maximum field of view of the optical lens; F is the total focal length of the optical lens group; H is the image height corresponding to the maximum field of view of the optical lens; TTL is the total optical length of the optical lens; FOV is the maximum aperture of all lenses in the optical lens; DMAX is the maximum aperture of all lenses in the optical lens; θ is the radian value of the maximum field of view of the optical lens; D 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 back focal length of the optical lens; TL is the length of the lens group along the optical axis in the optical lens; ENPD is the entrance pupil diameter of the optical lens; DST is the entrance pupil diameter of the aperture stop in the optical lens; T12 is the axial distance between the second side of the first lens and the first side of the second lens; T23 is the axial distance between the second side of the second lens and the first side of the third lens; T34 is the axial distance between the second side of the third lens and the first side of the fourth lens; T45 is... The axial distance between the second side surface of the fourth lens and the first side surface of the fifth lens, T56 is the axial distance between the second side surface of the fifth lens and the first side surface of the sixth lens, CT1 is the center thickness of the first lens, CT2 is the center thickness of the second lens, CT3 is the center thickness of the third lens, CT4 is the center thickness of the fourth lens, CT5 is the center thickness of the fifth lens, CT6 is the center thickness of the sixth lens, F1 is the effective focal length of the first lens, F2 is the effective focal length of the second lens, F3 is the effective focal length of the third lens, F4 is the effective focal length of the fourth lens, F5 is the effective focal length of the fifth lens, F6 is the effective focal length of the sixth lens, R1 is the radius of curvature of the first side surface of the first lens, R2 is the radius of curvature of the second side surface of the first lens, R5 is the radius of curvature of the first side surface of the third lens, R6 is the radius of curvature of the second side surface of the third lens, R9 is the radius of curvature of the first side surface of the fifth lens, and R10 is the radius of curvature of the second side surface of the fifth lens.

[0041] In the example, the optical lens satisfies: 51.66 ≤ (FOV×F) / H / 1° ≤ 88.22. Preferably, 60.786 ≤ (FOV×F) / H / 1° ≤ 76.716. This design balances wide-angle short focal length with compact structure, balances imaging quality at the edge and center of the field of view, prioritizes high resolution in the central region, and the compact structure facilitates the miniaturization and integration of the radar.

[0042] In the example, the optical lens satisfies: 5.12 ≤ TTL / F ≤ 9.20. Preferably, 6.031 ≤ TTL / F ≤ 7.999. Given a fixed focal length, a smaller value indicates a more compact optical system, enabling miniaturization. The lower limit allows sufficient space for the first negative lens to diverge light, achieving an ultra-wide angle, while the upper limit ensures system compactness. This redundancy helps the six lenses correct complex aberrations.

[0043] In the example, the optical lens satisfies: 0.01 ≤ TTL / H / FOV × 1° ≤ 0.04. Preferably, 0.016 ≤ TTL / H / FOV × 1° ≤ 0.027. When the chip and field of view are fixed, the smaller this value, the more compact the system. The lower limit ensures sufficient total optical length (TTL) to accommodate the lens, achieve a large field of view and aberration correction, while the upper limit forces the system to be highly compact and make efficient use of the optical path.

[0044] In the example, the optical lens satisfies: 1.38 ≤ TTL / DMAX ≤ 2.45. Preferably, 1.633 ≤ TTL / DMAX ≤ 2.128. A smaller ratio indicates a more compact system. The lower limit ensures sufficient total optical length TTL, facilitating anti-telephoto structures, correcting large field-of-view aberrations, and reserving back working distance; the upper limit restricts the aspect ratio, optimizing aperture and length, and improving mechanical stability.

[0045] In the example, the optical lens satisfies: 0.48 ≤ (F×θ) / D ≤ 1.07. Preferably, 0.570 ≤ (F×θ) / D ≤ 0.930. This makes the optical system more compact while maintaining a consistent field of view. The lower limit restricts the edge ray angle, suppresses off-axis aberrations caused by a large field of view, and reduces the use of compensating lenses. The upper limit forces the system to tend towards the image-side telecentricity, reducing the back focal distance.

[0046] In the example, the optical lens satisfies: 0 < D / H / FOV × 1° ≤ 0.02. Preferably, 0.009 ≤ D / H / FOV × 1° ≤ 0.014. Given a fixed chip and field of view, the smaller this value, the more compact the system. The upper limit strictly restricts the relative size of the maximum aperture D, reducing the radial dimension of the lens. The lower limit ensures that the entrance pupil diameter cannot be too small, thus guaranteeing that the system has basic light transmission capability matching a large aperture, avoiding sacrificing optical performance for excessive miniaturization.

[0047] In the example, the optical lens satisfies: 0.28 ≤ D / H / F × 1mm ≤ 0.62. Preferably, 0.332 ≤ D / H / F × 1mm ≤ 0.538. This constraint enables large target surface compatibility and front-end miniaturization while maintaining a fixed focal length. The lower limit restricts the first lens aperture, optimizes optical power distribution and aberration correction, and allows for an ultra-wide field of view without a large front group aperture. The upper limit enables the system to support large-size image sensors and improves image quality.

[0048] In the example, the optical lens satisfies: 0.09 ≤ BFL / TTL ≤ 0.33. Preferably, 0.114 ≤ BFL / TTL ≤ 0.282. This constraint, while achieving miniaturization, also ensures a longer back focal length, which is beneficial for module assembly. The lower limit ensures the BFL is not too short, providing sufficient space for the installation of components such as filters, avoiding interference, and improving edge image quality; the upper limit restricts the BFL percentage, allowing optical correction to be concentrated in the front group, thereby controlling the overall lens length and achieving a compact structure.

[0049] In the example, the optical lens satisfies: 0.11 ≤ BFL / TL ≤ 0.45. Preferably, 0.128 ≤ BFL / TL ≤ 0.393. While achieving miniaturization, a longer back focal length facilitates module assembly. The lower limit ensures a minimum back focal length, providing sufficient installation space for related components, avoiding interference, and improving edge image quality; the upper limit restricts the proportion of the back focal length, allowing aberration correction and other tasks to be concentrated on the front lens group, thereby controlling the overall lens length to achieve miniaturization.

[0050] In the example, the optical lens satisfies: 0.34 ≤ F / H ≤ 0.64. Preferably, 0.411 ≤ F / H ≤ 0.552. Controlling the focal length and image height within a certain range is beneficial for improving resolution. The upper limit restricts the equivalent focal length from being too long, ensuring a large field of view to meet wide-angle performance; the lower limit prevents the focal length from being too short, avoiding excessively steep principal ray angles, which can suppress edge aberrations, maintain relative illumination, and ensure uniformity of global imaging under large apertures.

[0051] In the example, the optical lens satisfies: 0.85 ≤ F / ENPD ≤ 1.61. Preferably, 1 ≤ F / ENPD ≤ 1.4. Small FNO. This constraint is beneficial for increasing the light transmission of the optical lens, resulting in a larger entrance pupil diameter and improved relative illumination.

[0052] In an exemplary embodiment, the optical lens satisfies: 0.04 ≤ F / ENPD / D × 1mm ≤ 0.14. Preferably, 0.054 ≤ F / ENPD / D × 1mm ≤ 0.117. This ensures a small aperture while maintaining high light transmission, thus achieving lens miniaturization.

[0053] In the example, the optical lens satisfies: 1.14 ≤ DST / F ≤ 2.87. Preferably, 1.342 ≤ DST / F ≤ 2.493. The upper limit ensures that the aperture stop has a sufficient size to meet the light transmission requirements of the large aperture and prevents excessive vignetting on the image plane. The upper limit restricts the aperture stop diameter, controls the incident angle of the principal ray, makes the system tend towards the image side telecentric, reduces the incident angle of light at the edge of the field of view, helps to correct off-axis aberrations inherent in ultra-large field of view such as astigmatism, field curvature, and distortion, and the smooth optical path facilitates the correction of the rear lens.

[0054] In the example, the optical lens satisfies: 0 < (H / 2) / (F×tan(θ / 2)) ≤ 0.62. Preferably, 0.004 ≤ (H / 2) / (F×tan(θ / 2)) ≤ 0.535. This relationship reflects the ratio of the actual image height to the ideal image height, controlling lens optical distortion and facilitating the achievement of a wide-angle field of view for the system.

[0055] In the example, the optical lens satisfies: 0.90 ≤ (F / H) × θ ≤ 1.54. Preferably, 1.061 ≤ (F / H) × θ ≤ 1.339. This reflects the ratio of the actual image height to the ideal image height, controlling lens optical distortion and facilitating the achievement of a wide-angle field of view for the system.

[0056] In the example, the optical lens satisfies: 2.49 ≤ TTL / H ≤ 3.91. Preferably, 2.933 ≤ TTL / H ≤ 3.396. Assuming consistent chip specifications, a smaller value indicates a more compact optical system. The lower limit ensures the optical system has sufficient total length, providing the necessary physical space for the first negative lens to diverge light across a very wide field of view. The upper limit forces axial compactness of the lens, minimizing its length while maintaining performance.

[0057] In the example, the optical lens satisfies: 0.08 ≤ T12 / TTL ≤ 0.26. Preferably, 0.098 ≤ T12 / TTL ≤ 0.218. The upper limit constrains the air gap between the first and second lenses, limiting the optical path, which is beneficial for balancing edge field-of-view aberrations and for miniaturizing the entire lens. The lower limit ensures that the air gap between the first and second lenses occupies a sufficient proportion, providing the necessary space for the first negative lens to diverge ultra-wide field-of-view rays, allowing light to enter the second positive lens at a more optimized angle, which is beneficial for the initial correction of large field-of-view aberrations.

[0058] In the example, the optical lens satisfies: 0 < T56 / TTL ≤ 0.06. Preferably, 0.002 ≤ T56 / TTL ≤ 0.05. The small air gap of T56 balances edge field-of-view aberrations and shortens the axial dimension of the rear lens group, which is key to the ultra-thin and compact lens design. L5 and L6 are closely joined to form a doublet lens group, effectively correcting various aberrations and ensuring clear image quality at large apertures. Their upper and lower limits respectively prevent stray light from excessive proximity between the two lenses and avoid excessive spacing from compromising miniaturization, thus adapting to large FOV requirements.

[0059] In the example, the optical lens satisfies: 0.04 ≤ (T23 + T34 + T45 + T56) / TTL ≤ 0.17. Preferably, 0.054 ≤ (T23 + T34 + T45 + T56) / TTL ≤ 0.140. Constraining this ratio facilitates a high degree of integration in the lens design. The lower limit ensures that the inter-lens spacing allows the lens to have at least aberration correction capability. The upper limit restricts the cumulative length of the central structure of the lens, utilizing the lens's own surface shape and aspherical capabilities to undertake the main aberration correction and imaging tasks, rather than relying on long spacing. This reduces the overall optical length, promoting the realization of ultra-thin lenses.

[0060] In the example, the optical lens satisfies: 0.14 ≤ (T12 + T23 + T34 + T45 + T56) / TTL ≤ 0.36. Preferably, 0.173 ≤ (T12 + T23 + T34 + T45 + T56) / TTL ≤ 0.313. The ratio of the sum of the thicknesses of each lens element to the total length is used; a lower ratio indicates a more compact lens, which is beneficial for overall lens miniaturization and cost reduction.

[0061] In the example, the optical lens satisfies: 0.17 ≤ (CT2 + CT3 + CT4) / TTL ≤ 0.39. Preferably, 0.204 ≤ (CT2 + CT3 + CT4) / TTL ≤ 0.333. The ratio of the sum of the thicknesses of each lens element to the total length is used; a lower ratio indicates a more compact lens, which is beneficial for overall lens miniaturization and cost reduction. The lower limit ensures that the intermediate lens group has a sufficient minimum thickness, guaranteeing the structural strength of the lens and improving structural stability and manufacturing yield. The upper limit restricts the material proportion of the intermediate group, preventing the lens from becoming excessively thick and heavy. This promotes overall compactness.

[0062] In the example, the optical lens satisfies: 0.14 ≤ (CT5 + CT6) / TTL ≤ 0.39. Preferably, 0.169 ≤ (CT5 + CT6) / TTL ≤ 0.331. The ratio of the sum of the thicknesses of each lens element to the total length is used; the lower the value, the thinner and lighter the lens, which is beneficial for miniaturization and cost reduction. The lower limit ensures that the fifth lens L5 and the sixth lens L6 have sufficient basic thickness. This guarantees the structural strength of the lens elements, improves the structural stability of the rear lens group, and ensures sufficient design space for optical power and aberration correction. The upper limit restricts the thickness ratio of the rear lens group, promoting overall lens compactness and avoiding chromatic aberration problems caused by excessive thickness.

[0063] In the example, the optical lens satisfies: 5.15 ≤ |R1 / R2| ≤ 46.43. Preferably, 6.067 ≤ |R1 / R2| ≤ 40.366. This relationship constrains the surface shape of the first lens. The upper limit ensures that the first lens has sufficient divergence capability for light, guaranteeing that light rays with large incident angles can enter, while also helping to correct distortion. The lower limit ensures the structural strength of the first lens, helping to reduce the lens's sensitivity and manufacturing difficulty, while also helping to correct field curvature and balance image plane flatness.

[0064] In the example, the optical lens satisfies: 0.70 ≤ |R5 / R6| ≤ 1.73. Preferably, 0.825 ≤ |R5 / R6| ≤ 1.503. This condition balances the power distribution of the third positive lens to optimize imaging. The lower limit avoids excessive differences in the radii of curvature on both sides, reducing severe light refraction and aberrations; the upper limit restricts the difference between the two, ensuring smooth beam incidence on the next lens and suppressing distortion. This range helps the lenses work together to correct aberrations, balancing image quality, manufacturing difficulty, and production feasibility.

[0065] In the example, the optical lens satisfies: -2.58 ≤ F1 / F ≤ -1.18. Preferably, -2.243 ≤ F1 / F ≤ -1.394. The first lens L1 is a negative lens. By controlling this range, the negative optical power of the first lens can expand the field of view, reduce the burden on the rear lens, and avoid excessive light divergence that leads to aberrations, thus helping to reduce lens sensitivity and achieve miniaturization.

[0066] In the example, the optical lens satisfies: 2.71 ≤ F2 / F ≤ 42.57. Preferably, 3.192 ≤ F2 / F ≤ 37.016. The second lens with positive optical power can receive the diverging light from the first lens and redirect it to the transition lens group, ensuring efficient light transmission and improving the clarity of the entire field of view.

[0067] In the example, the optical lens satisfies: 3.16 ≤ F3 / F ≤ 76.74. Preferably, 3.719 ≤ F3 / F ≤ 66.725. This range allows for adjustment of the incident angle of light over a large field of view to reduce system size and cost, while balancing aberrations (especially coma over a large field of view) to ensure high image quality.

[0068] In the example, the optical lens satisfies: 2.49 ≤ |F4 / F| ≤ 54.95. Preferably, 2.937 ≤ |F4 / F| ≤ 47.78. The fourth lens with a large focal length and positive optical power can adjust the angle of light incidence to reduce system size and cost, while balancing large field-of-view aberrations (especially coma) to ensure high image quality.

[0069] In the example, the optical lens satisfies: 2.24 ≤ F5 / F ≤ 66.31. Preferably, 2.643 ≤ F5 / F ≤ 57.655. The fifth lens with positive optical power acts as a crucial transition, receiving the light beam and complementing the aberrations of the preceding and following lenses, ensuring high imaging quality of the system.

[0070] In the example, the optical lens satisfies: 2.00 ≤ |F6 / F| ≤ 48.56. Preferably, 2.359 ≤ |F6 / F| ≤ 42.219. The sixth lens performs the final resolution on the beam converged by the fifth lens, and its focal length within this range is beneficial for achieving high image quality.

[0071] In the example, the optical lens satisfies: 0.14 ≤ |F3 / F4| ≤ 24.54. Preferably, 0.167 ≤ |F3 / F4| ≤ 21.335. Adjusting the focal length of the third lens and the fourth lens can efficiently correct distortion and aberrations in wide-angle lenses.

[0072] In the example, the optical lens satisfies: -0.50 ≤ F1 / F2 ≤ -0.03. Preferably, -0.439 ≤ F1 / F2 ≤ -0.045. This relationship balances light collection and initial convergence, adapting to large aperture light transmission and laying the groundwork for subsequent aberration correction. The upper limit prevents the first lens from excessively diverging the beam, while the lower limit ensures that the first lens has sufficient negative optical power to adapt to a large field of view, while preventing the positive optical power of the second lens from being too large.

[0073] In the example, the optical lens satisfies: -0.96 ≤ (1 / F1 + 1 / F2 + 1 / F3) / (1 / F4 + 1 / F5 + 1 / F6) ≤ -0.45. Preferably, -0.835 ≤ (1 / F1 + 1 / F2 + 1 / F3) / (1 / F4 + 1 / F5 + 1 / F6) ≤ -0.529. This range allows for precise control of the light path, achieving a wide field of view, ensuring uniform echo signal and clear details, improving the resolution of small targets at long distances, and adapting to blind spot filling scenarios. The upper limit ensures sufficient front-group optical power to maintain central resolution, while the lower limit prevents excessive front-group optical power from causing edge resolution collapse, while suppressing various aberrations in a wide field of view.

[0074] In the example, the optical lens satisfies: 0.59 ≤ (1 / F2 + 1 / F3 + 1 / F4 + 1 / F5 + 1 / F6) × F ≤ 1.07. Preferably, 0.704 ≤ (1 / F2 + 1 / F3 + 1 / F4 + 1 / F5 + 1 / F6) × F ≤ 0.929. The lower limit ensures sufficient positive optical power for the last five lenses to counteract the divergence effect of the first lens and meet the light convergence requirements; the upper limit avoids excessive positive optical power, prevents abrupt aberrations, balances the image quality across the entire field of view, and adapts to the imaging requirements of a large field of view and large aperture.

[0075] In the example, the optical lens satisfies: 0 < T56 / F5 ≤ 0.08. Preferably, 0 < T56 / F5 ≤ 0.065. This range allows the fifth and sixth lenses to be closely arranged, which reduces the overall optical length of the lens to achieve a compact structure, and forms a close-fitting doublet lens group, correcting on-axis and off-axis aberrations, smoothing the light angle, and ensuring image quality at the edges of the aperture and flatness of the image plane in a large field of view.

[0076] In the example, the optical lens satisfies: -1.02 ≤ T12 / F1 ≤ -0.36. Preferably, -0.880 ≤ T12 / F1 ≤ -0.424. This range optimizes the spacing between the two front lenses, balancing wide-angle achievement and aberration control, and is key to a high-performance wide-angle lens. The lower limit ensures that the air gap between the first and second lenses is too large to prevent excessive light diffusion, suppress astigmatism, and control the overall length; the upper limit ensures that this air gap is sufficient to allow the first lens to fully utilize its negative optical power to receive light from a large field of view.

[0077] In the example, the optical lens satisfies: 6.13 ≤ R9×R10 / (R10-R9+CT5) / 1mm ≤ 116.60. Preferably, 7.222 ≤ R9×R10 / (R10-R9+CT5) / 1mm ≤ 101.388. The upper limit sets the upper limit of the positive focal length of the fifth lens to ensure the light-gathering ability to adapt to the large aperture, while avoiding an overly flat surface and correcting field curvature; the lower limit avoids the fifth lens having an insufficient focal length, preventing aberrations such as spherical aberration, providing flexibility in surface design, and helping to correct astigmatism and distortion in conjunction with the front and rear lenses.

[0078] In the example, the optical lens satisfies: -7.40≤R1×R2 / (R2-R1+CT1) / 1mm≤-3.32. Preferably, -6.431≤R1×R2 / (R2-R1+CT1) / 1mm≤-3.916. The upper limit ensures that the first lens has a sufficiently strong negative optical power to support the ultra-large field of view and anti-telephoto structure, and to provide a longer back working distance; the lower limit avoids excessive light divergence, reduces the light-gathering pressure on the second lens, reduces spherical aberration accumulation, ensures center image quality, and reserves space for subsequent aberration correction.

[0079] In the example, the optical lens satisfies: 0.21 ≤ (1 / F5 + 1 / F6) × F ≤ 0.81. Preferably, 0.258 ≤ (1 / F5 + 1 / F6) × F ≤ 0.703. The lower limit avoids excessive total optical focal length of the fifth and sixth lenses, prevents excessive convergence of ultra-wide-angle light, reduces edge aberrations, and ensures uniform imaging across the entire field of view; the upper limit enhances its final convergence capability, improves the sharpness of the center field of view, and at the same time finely cancels residual aberrations of the front group, balancing the performance of the wide field of view and the large aperture.

[0080] In the example, the optical lens satisfies: 0.34 ≤ (T23 + T34 + T45 + T56) / F ≤ 1.19. Preferably, 0.400 ≤ (T23 + T34 + T45 + T56) / F ≤ 1.032. The lower limit ensures the necessary spacing between lenses, providing design freedom for correcting off-axis aberrations and optimizing the incident light angle to adapt to a large field of view; the upper limit restricts the length of the central structure, achieving lens miniaturization and compactness, while avoiding stray light and aberrations and maintaining imaging contrast at large apertures.

[0081] In the example, the optical lens satisfies: -0.72≤(T23+T34+T45+T56) / F1≤-0.21. Preferably, -0.618≤(T23+T34+T45+T56) / F1≤-0.248. The lower limit ensures sufficient lens spacing, avoiding light congestion and off-axis aberrations, and reducing the risk of lens edge interference; the upper limit compresses the system's axial dimensions, improving light reception and convergence efficiency, strengthening the lens's collaborative aberration correction capability, and ensuring the sharpness of the ultra-wide-angle edge field of view.

[0082] In the example, the optical lens satisfies: 0.09 ≤ (1 / F4 + 1 / F5) / T45 × 1 mm 2 ≤2.95. Preferably, 0.109≤(1 / F4+1 / F5) / T45×1mm 2 ≤2.558. Lower control limit: This ensures that after light diverges from the front group of positive optical power, a smooth transition of light and initial aberration correction are possible, while also initially optimizing image quality at the edges of the field of view. Upper control limit: It restricts the focal length or air gap between the fourth lens L4 and the fifth lens L5 from being too small, facilitating a more compact overall structure. Simultaneously, this avoids stray light generated along excessively long paths, helping to maintain image contrast at large apertures.

[0083] In the example, the optical lens satisfies: 0.02 ≤ R² / F² ≤ 0.42. Preferably, 0.031 ≤ R² / F² ≤ 0.365. This range of conditions is suitable for a second lens with positive optical power, regulating its light-gathering ability to avoid insufficient or excessive light convergence, facilitating rapid light transition, and reducing lens size; at the same time, it reduces refraction deviation, corrects aberrations, guides wide-angle light, and ensures target clarity and wide coverage requirements in blind-spot scenes.

[0084] In the example, the optical lens satisfies: 3.10≤|R1 / F1|≤34.10. Preferably, 3.653≤|R1 / F1|≤29.646. Precise control of the negative optical power efficiency of the first lens L1, by constraining the absolute ratio of the curvature of the first surface to the focal length, avoids insufficient light divergence due to an overly flat R1 (too small ratio) or excessive divergence due to an overly curved R1 (too large ratio). This ensures stable initial refraction of light across a large field of view and allows the lens to form a large distortion field of view, projecting a wider range of external light onto a fixed-size chip in a "moderately stretched" manner—preventing light from exceeding the chip's photosensitive range while allowing light from previously inaccessible edge areas to be imaged. Ultimately, without replacing the chip with a larger size or increasing equipment cost and size, the field of view is further expanded, perfectly meeting the core requirements of "no blind spots and wide coverage" for blind spot compensation in LiDAR.

[0085] Specific embodiments of the optical lens applicable to the above-described embodiments are further described below with reference to the accompanying drawings. It should be understood that the units for the radius of curvature and thickness / distance in the basic parameters of the optical lens are mm.

[0086] Example 1

[0087] The following is for reference Figure 1 The optical lens according to Embodiment 1 of this application is described.

[0088] like 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 third lens L3 and the fourth lens L4.

[0089] The first lens L1 has negative optical power, with its first side surface S1 being convex and its second side surface S2 being concave. The second lens L2 has positive optical power, with its first side surface S3 being convex and its second side surface S4 being convex. The third lens L3 has positive optical power, with its first side surface S5 being concave and its second side surface S6 being convex. The fourth lens L4 has positive optical power, with its first side surface S8 being concave and its second side surface S9 being convex. The fifth lens L5 has positive optical power, with its first side surface S10 being convex and its second side surface S11 being convex. The sixth lens L6 has positive optical power, with its first side surface S12 being convex and its second side surface S13 being convex.

[0090] An image plane IMA is provided on the second side of the optical lens. A filter IR and a protective glass CG are disposed between the sixth lens L6 and the image plane IMA. The filter IR has a first side surface S14 and a second side surface S15, and the protective glass CG has a first side surface S16 and a second side surface S17. When the IMA is the imaging plane, light from the object passes through each surface sequentially and is finally imaged on 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. Table 1 shows the basic parameters of the optical lens of Embodiment 1.

[0091] Table 1

[0092]

[0093] In Embodiment 1, the first side surface S12 and the second side surface S13 of the sixth lens L6 are both aspherical surfaces, and the surface shape of each aspherical surface can be defined using, but is not limited to, the following aspherical surface formula:

[0094] ;

[0095] Where x is the distance vector from the vertex of the aspherical surface at a height h along the optical axis; c is the paraxial curvature of the aspherical surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient; Ai is the i-th order correction coefficient of the aspherical surface. Table 2 gives the conic coefficient k and higher-order coefficients A4, A6, A8, A10 and A12 that can be used for the aspherical surfaces S12 and S13 in Example 1.

[0096] Table 2

[0097]

[0098] The optical lens of Example 1 has an MTF value exceeding 0.44 at a spatial frequency of 17 lp / mm (17 lines / mm). In terms of the dot plot RMS, the root mean square radius of the spot on the image plane is 22 μm at the edge of the field of view.

[0099] Example 2

[0100] The following is for reference Figure 2 Describes an optical lens according to Embodiment 2 of this application. For example... Figure 2 As shown, the main difference between this embodiment and Embodiment 1 is that the optical parameters such as the radius of curvature and lens thickness of each lens surface are different. Table 3 shows the basic parameters of the optical lens of Embodiment 2.

[0101] Table 3

[0102]

[0103] In Example 2, the first side surface S12 and the second side surface S13 of the sixth lens L6 are both aspherical surfaces. Table 4 shows the correlation coefficients that can be used for each aspherical surface S12 and S13 in Example 2.

[0104] Table 4

[0105]

[0106] from Figure 26A and Figure 26B As can be seen, the optical lens of Example 2 has an MTF value exceeding 0.65 at a spatial frequency of 17 lp / mm (17 lines / mm). In terms of the dot plot, the root mean square radius of the light spot on the image plane is 10 μm at the edge of the field of view.

[0107] Example 3

[0108] 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 radius of curvature and lens thickness of each lens surface are different; and the first side surface S3 of the second lens L2 is concave, while the first side surface S5 of the third lens L3 is convex. Table 5 shows the basic parameters of the optical lens of Embodiment 3.

[0109] Table 5

[0110]

[0111] In Example 3, the first side surface S12 and the second side surface S13 of the sixth lens L6 are both aspherical surfaces. Table 6 gives the correlation coefficients that can be used for each aspherical surface S12 and S13 in Example 3.

[0112] Table 6

[0113]

[0114] The optical lens of Example 3 has an MTF value exceeding 0.44 at a spatial frequency of 17 lp / mm (17 lines / mm). In terms of the dot plot RMS, the root mean square radius of the spot on the image plane is 16 μm at the edge of the field of view.

[0115] Example 4

[0116] The following is for reference Figure 4 Describes an optical lens according to Embodiment 4 of this application. For example... Figure 4As shown, the main differences between this embodiment and Embodiment 1 are: the optical parameters such as the radius of curvature and lens thickness of each lens surface are different; and the first side surface S8 of the fourth lens L4 is convex, while the second side surface S11 of the fifth lens L5 is concave. Table 7 shows the basic parameters of the optical lens of Embodiment 4.

[0117] Table 7

[0118]

[0119] In Example 4, the first side surface S12 and the second side surface S13 of the sixth lens L6 are both aspherical surfaces. Table 8 gives the correlation coefficients that can be used for each aspherical surface S12 and S13 in Example 4.

[0120] Table 8

[0121]

[0122] The optical lens of Example 4 has an MTF value exceeding 0.40 at a spatial frequency of 17 lp / mm (17 lines / mm). In terms of the dot plot RMS, the root mean square radius of the spot on the image plane is 38 μm at the edge of the field of view.

[0123] Example 5

[0124] The following is for reference Figure 5 Describes an optical lens according to Embodiment 5 of this application. For example... Figure 5 As shown, the main differences between this embodiment and Embodiment 1 are: the optical parameters such as the radius of curvature and lens thickness of each lens surface are different; the first side surface S8 of the fourth lens L4 is convex, and the second side surface S11 of the fifth lens L5 is concave; in the optical lens shown in this embodiment, only the second side surface of the sixth lens has an inflection point. Table 9 shows the basic parameter table of the optical lens of Embodiment 5.

[0125] Table 9

[0126]

[0127] In Example 5, the first side surface S12 and the second side surface S13 of the sixth lens L6 are both aspherical surfaces. Table 10 gives the correlation coefficients that can be used for each aspherical surface S12 and S13 in Example 5.

[0128] Table 10

[0129]

[0130] The optical lens of Example 5 has an MTF value exceeding 0.51 at a spatial frequency of 17 lp / mm (17 lines / mm). In terms of the dot plot RMS, the root mean square radius of the spot on the image plane is 18 μm at the edge of the field of view.

[0131] Example 6

[0132] 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 radius of curvature and lens thickness of each lens surface are different; and the first side surface S8 of the fourth lens L4 is convex, while the second side surface S11 of the fifth lens L5 is concave. Table 11 shows the basic parameters of the optical lens of Embodiment 6.

[0133] Table 11

[0134]

[0135] In Example 6, the first side surface S12 and the second side surface S13 of the sixth lens L6 are both aspherical surfaces. Table 12 gives the correlation coefficients that can be used for each aspherical surface S12 and S13 in Example 6.

[0136] Table 12

[0137]

[0138] from Figure 27A and Figure 27B As can be seen, the optical lens of Example 6 has an MTF value exceeding 0.65 at a spatial frequency of 17 lp / mm (17 lines / mm). In terms of the dot plot RMS, the root mean square radius of the light spot on the image plane is 8.8 μm at the edge of the field of view.

[0139] Example 7

[0140] The following is for reference Figure 7 Describes an optical lens according to Embodiment 7 of this application. For example... Figure 7 As shown, the main difference between this embodiment and Embodiment 1 is that the optical parameters such as the radius of curvature and lens thickness of each lens surface are different; the first side surface S3 of the second lens L2 is concave, the first side surface S8 of the fourth lens L4 is convex, the second side surface S9 of the fourth lens L4 is concave, and the second side surface S11 of the fifth lens L5 is concave. Table 13 shows the basic parameter table of the optical lens of Embodiment 7.

[0141] Table 13

[0142]

[0143] In Example 7, the first side surface S12 and the second side surface S13 of the sixth lens L6 are both aspherical surfaces. Table 14 gives the correlation coefficients that can be used for each aspherical surface S12 and S13 in Example 7.

[0144] Table 14

[0145]

[0146] The optical lens of Example 7 has an MTF value exceeding 0.42 at a spatial frequency of 17 lp / mm (17 lines / mm). In terms of the dot plot RMS, the root mean square radius of the spot on the image plane at the edge of the field of view is 23 μm.

[0147] Example 8

[0148] The following is for reference Figure 8 Describes an optical lens according to Embodiment 8 of this application. For example... Figure 8 As shown, the main difference between this embodiment and Embodiment 1 is that the optical parameters such as the radius of curvature and lens thickness of each lens surface are different; the first side surface S3 of the second lens L2 is concave, the first side surface S8 of the fourth lens L4 is convex, the second side surface S9 of the fourth lens L4 is concave, and the second side surface S11 of the fifth lens L5 is concave. Table 15 shows the basic parameter table of the optical lens of Embodiment 8.

[0149] Table 15

[0150]

[0151] In Example 8, the first side surface S12 and the second side surface S13 of the sixth lens L6 are both aspherical surfaces. Table 16 gives the correlation coefficients that can be used for each aspherical surface S12 and S13 in Example 8.

[0152] Table 16

[0153]

[0154] The optical lens of Example 8 has an MTF value exceeding 0.53 at a spatial frequency of 17 lp / mm (17 lines / mm). In terms of the dot plot RMS, the root mean square radius of the spot on the image plane is 18 μm at the edge of the field of view.

[0155] Example 9

[0156] The following is for reference Figure 9 Describes an optical lens according to Embodiment 9 of this application. For example... Figure 9As shown, the main differences between this embodiment and Embodiment 1 are: the optical parameters such as the radius of curvature and lens thickness of each lens surface are different; and the first side surface S8 of the fourth lens L4 is convex, the second side surface S9 of the fourth lens L4 is concave, and the first side surface S10 of the fifth lens L5 is concave. Table 17 shows the basic parameters of the optical lens of Embodiment 9.

[0157] Table 17

[0158]

[0159] In Example 9, the first side surface S12 and the second side surface S13 of the sixth lens L6 are both aspherical surfaces. Table 18 gives the correlation coefficients that can be used for each aspherical surface S12 and S13 in Example 9.

[0160] Table 18

[0161]

[0162] The optical lens of Example 9 has an MTF value exceeding 0.48 at a spatial frequency of 17 lp / mm (17 lines / mm). In terms of the dot plot RMS, the root mean square radius of the spot on the image plane is 15 μm at the edge of the field of view.

[0163] Example 10

[0164] The following is for reference Figure 10 Describes an optical lens according to Embodiment 10 of this application. For example... Figure 10 As shown, the main differences between this embodiment and Embodiment 1 are: the optical parameters such as the radius of curvature and lens thickness of each lens surface are different; and the first side surface S8 of the fourth lens L4 is convex, the second side surface S9 of the fourth lens L4 is concave, and the first side surface S10 of the fifth lens L5 is concave. Table 19 shows the basic parameters of the optical lens of Embodiment 10.

[0165] Table 19

[0166]

[0167] In Example 10, the first side surface S12 and the second side surface S13 of the sixth lens L6 are both aspherical surfaces. Table 20 gives the correlation coefficients that can be used for each aspherical surface S12 and S13 in Example 10.

[0168] Table 20

[0169]

[0170] The optical lens of Example 10 has an MTF value exceeding 0.48 at a spatial frequency of 17 lp / mm (17 lines / mm). In terms of the dot plot RMS, the root mean square radius of the spot on the image plane is 17 μm at the edge of the field of view.

[0171] Example 11

[0172] The following is for reference Figure 11 Describes an optical lens according to Embodiment 11 of this application. For example... Figure 11 As shown, the main differences between this embodiment and Embodiment 1 are: the optical parameters such as the radius of curvature and lens thickness of each lens surface are different; the first side surface S5 of the third lens L3 is convex, the second side surface S6 of the third lens L3 is concave, the first side surface S8 of the fourth lens L4 is convex, and the first side surface S12 of the sixth lens L6 has a curvature point. Table 21 shows the basic parameter table of the optical lens of Embodiment 11.

[0173] Table 21

[0174]

[0175] In Example 11, the first side surface S12 and the second side surface S13 of the sixth lens L6 are both aspherical surfaces. Table 22 gives the correlation coefficients that can be used for each aspherical surface S12 and S13 in Example 11.

[0176] Table 22

[0177]

[0178] The optical lens of Example 11 has an MTF value exceeding 0.22 at a spatial frequency of 17 lp / mm (17 lines / mm). In terms of the dot plot RMS, the root mean square radius of the spot on the image plane is 17 μm at the edge of the field of view.

[0179] Example 12

[0180] 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 differences between this embodiment and Embodiment 1 are: the optical parameters such as the radius of curvature and lens thickness of each lens surface are different; and the second side surface S4 of the second lens L2 is concave, the first side surface S8 of the fourth lens L4 is convex, the second side surface S9 of the fourth lens L4 is concave, the second side surface S11 of the fifth lens L5 is concave, and the second side surface S13 of the sixth lens L6 is concave. Table 23 shows the basic parameter table of the optical lens of Embodiment 12.

[0181] Table 23

[0182]

[0183] In Example 12, the first side surface S12 and the second side surface S13 of the sixth lens L6 are both aspherical surfaces. Table 24 gives the correlation coefficients that can be used for each aspherical surface S12 and S13 in Example 12.

[0184] Table 24

[0185]

[0186] The optical lens of Example 12 has an MTF value exceeding 0.14 at a spatial frequency of 17 lp / mm (17 lines / mm). In terms of the dot plot RMS, the root mean square radius of the spot on the image plane at the edge of the field of view is 31 μm.

[0187] Example 13

[0188] 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 differences between this embodiment and Embodiment 1 are: the optical parameters such as the radius of curvature and lens thickness of each lens surface are different; and the second side surface S4 of the second lens L2 is concave, the first side surface S8 of the fourth lens L4 is convex, the second side surface S9 of the fourth lens L4 is concave, the second side surface S11 of the fifth lens L5 is concave, and the second side surface S13 of the sixth lens L6 is concave. Table 25 shows the basic parameter table of the optical lens of Embodiment 13.

[0189] Table 25

[0190]

[0191] In Example 13, the first side surface S12 and the second side surface S13 of the sixth lens L6 are both aspherical surfaces. Table 26 gives the correlation coefficients that can be used for each aspherical surface S12 and S13 in Example 13.

[0192] Table 26

[0193]

[0194] The optical lens of Example 13 has an MTF value exceeding 0.30 at a spatial frequency of 17 lp / mm (17 lines / mm). In terms of the dot plot RMS, the root mean square radius of the spot on the image plane at the edge of the field of view is 38 μm.

[0195] Example 14

[0196] The following is for reference Figure 14 Describes an optical lens according to Embodiment 14 of this application. For example... Figure 14As shown, the main differences between this embodiment and Embodiment 1 are: the optical parameters such as the radius of curvature and lens thickness of each lens surface are different; and the second side surface S4 of the second lens L2 is concave, the first side surface S8 of the fourth lens L4 is convex, the second side surface S9 of the fourth lens L4 is concave, the second side surface S11 of the fifth lens L5 is concave, and the second side surface S13 of the sixth lens L6 is concave. Table 27 shows the basic parameter table of the optical lens of Embodiment 14.

[0197] Table 27

[0198]

[0199] In Example 14, the first side surface S12 and the second side surface S13 of the sixth lens L6 are both aspherical surfaces. Table 28 gives the correlation coefficients that can be used for each aspherical surface S12 and S13 in Example 14.

[0200] Table 28

[0201]

[0202] The optical lens of Example 14 has an MTF value exceeding 0.44 at a spatial frequency of 17 lp / mm (17 lines / mm). In terms of the dot plot RMS, the root mean square radius of the spot on the image plane at the edge of the field of view is 17 μm.

[0203] Example 15

[0204] 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 radius of curvature and lens thickness of each lens surface are different; the second side surface S13 of the sixth lens L6 has at least one inflection point. Table 29 shows the basic parameter table of the optical lens of Embodiment 15.

[0205] Table 29

[0206]

[0207] In Example 15, the first side surface S12 and the second side surface S13 of the sixth lens L6 are both aspherical surfaces. Table 30 gives the correlation coefficients that can be used for each aspherical surface S12 and S13 in Example 15.

[0208] Table 30

[0209]

[0210] The optical lens of Example 15 has an MTF value exceeding 0.50 at a spatial frequency of 17 lp / mm (17 lines / mm). In terms of the dot plot RMS, the root mean square radius of the spot on the image plane is 18 μm at the edge of the field of view.

[0211] Example 16

[0212] 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 difference between this embodiment and Embodiment 1 is that the optical parameters such as the radius of curvature and lens thickness of each lens surface are different. Table 31 shows the basic parameters of the optical lens of Embodiment 16.

[0213] Table 31

[0214]

[0215] In Example 16, the first side surface S12 and the second side surface S13 of the sixth lens L6 are both aspherical surfaces. Table 32 gives the correlation coefficients that can be used for each aspherical surface S12 and S13 in Example 16.

[0216] Table 32

[0217]

[0218] The optical lens of Example 16 has an MTF value exceeding 0.50 at a spatial frequency of 17 lp / mm (17 lines / mm). In terms of the dot plot RMS, the root mean square radius of the spot on the image plane is 18 μm at the edge of the field of view.

[0219] Example 17

[0220] 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 radius of curvature and lens thickness of each lens surface are different. Table 33 shows the basic parameters of the optical lens of Embodiment 17.

[0221] Table 33

[0222]

[0223] In Example 17, the first side surface S12 and the second side surface S13 of the sixth lens L6 are both aspherical surfaces. Table 34 gives the correlation coefficients that can be used for each aspherical surface S12 and S13 in Example 17.

[0224] Table 34

[0225]

[0226] The optical lens of Example 17 has an MTF value exceeding 0.57 at a spatial frequency of 17 lp / mm (17 lines / mm). In terms of the dot plot RMS, the root mean square radius of the spot on the image plane is 9.9 μm at the edge of the field of view.

[0227] Example 18

[0228] The following is for reference Figure 18 Describes an optical lens according to Embodiment 18 of this application. For example... Figure 18 As shown, the main difference between this embodiment and Embodiment 1 is that the optical parameters such as the radius of curvature and lens thickness of each lens surface are different; the first side surface S8 of the fourth lens L4 is convex, the second side surface S9 of the fourth lens L4 is concave, the second side surface S13 of the sixth lens L6 is concave, and the optical power of the sixth lens L6 is negative. Table 35 shows the basic parameter table of the optical lens of Embodiment 18.

[0229] Table 35

[0230]

[0231] In Example 18, the first side surface S12 and the second side surface S13 of the sixth lens L6 are both aspherical surfaces. Table 36 gives the correlation coefficients that can be used for each aspherical surface S12 and S13 in Example 18.

[0232] Table 36

[0233]

[0234] The optical lens of Example 18 has an MTF value exceeding 0.51 at a spatial frequency of 17 lp / mm (17 lines / mm). In terms of the dot plot RMS, the root mean square radius of the spot on the image plane is 9 μm at the edge of the field of view.

[0235] Example 19

[0236] The following is for reference Figure 19 Describes an optical lens according to Embodiment 19 of this application. For example... Figure 19 As shown, the main differences between this embodiment and Embodiment 1 are: the optical parameters such as the radius of curvature and lens thickness of each lens surface are different; the second side surface S4 of the second lens L2 is concave, the first side surface S8 of the fourth lens L4 is convex, the second side surface S9 of the fourth lens L4 is concave, the second side surface S13 of the sixth lens L6 is concave, and the optical power of the sixth lens L6 is negative. Table 37 shows the basic parameter table of the optical lens of Embodiment 19.

[0237] Table 37

[0238]

[0239] In Example 19, the first side surface S12 and the second side surface S13 of the sixth lens L6 are both aspherical surfaces. Table 38 gives the correlation coefficients that can be used for each aspherical surface S12 and S13 in Example 19.

[0240] Table 38

[0241]

[0242] The optical lens of Example 19 has an MTF value exceeding 0.46 at a spatial frequency of 17 lp / mm (17 lines / mm). In terms of the dot plot RMS, the root mean square radius of the spot on the image plane is 29 μm at the edge of the field of view.

[0243] Example 20

[0244] The following is for reference Figure 20 Describes an optical lens according to Embodiment 20 of this application. For example... Figure 20 As shown, the main differences between this embodiment and Embodiment 1 are: the optical parameters such as the radius of curvature and lens thickness of each lens surface are different; the first side surface S8 of the fourth lens L4 is convex, the second side surface S13 of the sixth lens L6 is concave, and the optical power of the sixth lens L6 is negative. Table 39 shows the basic parameters of the optical lens of Embodiment 20.

[0245] Table 39

[0246]

[0247] In Example 20, the first side surface S12 and the second side surface S13 of the sixth lens L6 are both aspherical surfaces. Table 40 gives the correlation coefficients that can be used for each aspherical surface S12 and S13 in Example 20.

[0248] Table 40

[0249]

[0250] The optical lens of Example 20 has an MTF value exceeding 0.50 at a spatial frequency of 17 lp / mm (17 lines / mm). In terms of the dot plot RMS, the root mean square radius of the spot on the image plane at the edge of the field of view is 39 μm.

[0251] Example 21

[0252] The following is for reference Figure 21 Describes an optical lens according to Embodiment 21 of this application. For example... Figure 21As shown, the main differences between this embodiment and Embodiment 1 are: the optical parameters such as the radius of curvature and lens thickness of each lens surface are different; the first side surface S8 of the fourth lens L4 is convex, the second side surface S9 of the fourth lens L4 is concave, and the optical power of the fourth lens L4 is negative. Table 41 shows the basic parameters of the optical lens of Embodiment 21.

[0253] Table 41

[0254]

[0255] In Example 21, the first side surface S12 and the second side surface S13 of the sixth lens L6 are both aspherical surfaces. Table 42 gives the correlation coefficients that can be used for each aspherical surface S12 and S13 in Example 21.

[0256] Table 42

[0257]

[0258] The optical lens of Example 21 has an MTF value exceeding 0.46 at a spatial frequency of 17 lp / mm (17 lines / mm). In terms of the dot plot RMS, the root mean square radius of the spot on the image plane at the edge of the field of view is 22 μm.

[0259] Example 22

[0260] The following is for reference Figure 22 Describes an optical lens according to Embodiment 22 of this application. For example... Figure 22 As shown, the main differences between this embodiment and Embodiment 1 are: the optical parameters such as the radius of curvature and lens thickness of each lens surface are different; the first side surface S8 of the fourth lens L4 is convex, the second side surface S9 of the fourth lens L4 is concave, the optical power of the fourth lens L4 is negative, and the second side surface S11 of the fifth lens L5 is concave. Table 43 shows the basic parameter table of the optical lens of Embodiment 22.

[0261] Table 43

[0262]

[0263] In Example 22, the first side surface S12 and the second side surface S13 of the sixth lens L6 are both aspherical surfaces. Table 44 gives the correlation coefficients that can be used for each aspherical surface S12 and S13 in Example 22.

[0264] Table 44

[0265]

[0266] The optical lens of Example 22 has an MTF value exceeding 0.40 at a spatial frequency of 17 lp / mm (17 lines / mm). In terms of the dot plot RMS, the root mean square radius of the spot on the image plane at the edge of the field of view is 43 μm.

[0267] Example 23

[0268] The following is for reference Figure 23 Describes an optical lens according to Embodiment 23 of this application. For example... Figure 23 As shown, the main differences between this embodiment and Embodiment 1 are: the optical parameters such as the radius of curvature and lens thickness of each lens surface are different; the second side surface S4 of the second lens L2 is concave, the first side surface S8 of the fourth lens L4 is convex, the second side surface S9 of the fourth lens L4 is concave, the optical power of the fourth lens L4 is negative, and the second side surface S11 of the fifth lens L5 is concave. Table 43 shows the basic parameters of the optical lens of Embodiment 22.

[0269] Table 45

[0270]

[0271] In Example 23, the first side surface S12 and the second side surface S13 of the sixth lens L6 are both aspherical surfaces. Table 44 gives the correlation coefficients that can be used for each aspherical surface S12 and S13 in Example 23.

[0272] Table 46

[0273]

[0274] The optical lens of Example 23 has an MTF value exceeding 0.46 at a spatial frequency of 17 lp / mm (17 lines / mm). In terms of the dot plot RMS, the root mean square radius of the spot on the image plane is 30 μm at the edge of the field of view.

[0275] Example 24

[0276] The following is for reference Figure 24 Describes an optical lens according to Embodiment 24 of this application. For example... Figure 24 As shown, the main difference between this embodiment and Embodiment 1 is that the optical parameters such as the radius of curvature and lens thickness of each lens surface are different. Table 43 shows the basic parameters of the optical lens of Embodiment 24.

[0277] Table 47

[0278]

[0279] In Example 24, the first side surface S12 and the second side surface S13 of the sixth lens L6 are both aspherical surfaces. Table 44 gives the correlation coefficients that can be used for each aspherical surface S12 and S13 in Example 24.

[0280] Table 48

[0281]

[0282] from Figure 28A and Figure 28B As can be seen, the optical lens of Example 24 has an MTF value exceeding 0.62 at a spatial frequency of 17 lp / mm (17 lines / mm). In terms of the dot plot RMS, the root mean square radius of the light spot on the image plane is 31 μm at the edge of the field of view.

[0283] Example 25

[0284] The following is for reference Figure 25 Describes an optical lens according to Embodiment 25 of this application. For example... Figure 25 As shown, the main difference between this embodiment and Embodiment 1 is that the optical parameters such as the radius of curvature and lens thickness of each lens surface are different; the first side surface S1 of the first lens L1 is concave, the first side surface S8 of the fourth lens L4 is convex, the second side surface S13 of the sixth lens L6 is concave, and the optical power of the sixth lens L6 is negative. Table 43 shows the basic parameter table of the optical lens of Embodiment 25.

[0285] Table 49

[0286]

[0287] In Example 24, the first side surface S12 and the second side surface S13 of the sixth lens L6 are both aspherical surfaces. Table 44 gives the correlation coefficients that can be used for each aspherical surface S12 and S13 in Example 25.

[0288] Table 50

[0289]

[0290] The optical lens of Example 25 has an MTF value exceeding 0.30 at a spatial frequency of 17 lp / mm (17 lines / mm). In terms of the dot plot RMS, the root mean square radius of the spot on the image plane is 31 μm at the edge of the field of view.

[0291] Tables 51-1 and 51-2 provide the basic parameters of the optical lenses used in Examples 1 through 25. The unit for FOV in the tables is °, θ is a dimensionless parameter, and the units for other parameters are mm.

[0292] Table 51-1

[0293]

[0294] Table 51-2

[0295]

[0296] In summary, the conditional expressions of each embodiment in Examples 1-25 satisfy the relationships shown in Tables 52-1 and 52-2.

[0297] Table 52-1

[0298]

[0299] Table 52-2

[0300]

[0301] 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.

[0302] 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 having negative optical power, wherein the second side surface of the first lens is concave. A second lens having positive optical power, wherein at least one of the first and second side surfaces of the second lens is a convex surface; A third lens having positive optical power, wherein at least one of the first and second side surfaces of the third lens is a convex surface; A fourth lens having optical power, wherein at least one of the first and second side surfaces of the fourth lens is a convex surface; A fifth lens having positive optical power, wherein at least one of the first and second side surfaces of the fifth lens is a convex surface; A sixth lens with optical power, wherein the first side surface of the sixth lens is convex; The optical lens has six lenses with optical power. At least one of the fourth and sixth lenses has positive optical power; The optical lens satisfies the following conditions: 0.04 ≤ (T23 + T34 + T45 + T56) / TTL ≤ 0.17 and -0.96 ≤ (1 / F1 + 1 / F2 + 1 / F3) / (1 / F4 + 1 / F5 + 1 / F6) ≤ -0.45 and 0 < (H / 2) / (F × tan(θ / 2)) ≤ 0.62; where T23 is the axial distance between the second side surface of the second lens and the first side surface of the third lens, T34 is the axial distance between the second side surface of the third lens and the first side surface of the fourth lens, and T45 is the axial distance between the second side surface of the fourth lens and the first side surface of the third lens. T56 is the on-axis distance between the first side surface of the fifth lens and the second side surface of the sixth lens, TTL is the total optical length of the optical lens, F1 is the focal length of the first lens, F2 is the focal length of the second lens, F3 is the focal length of the third lens, F4 is the focal length of the fourth lens, F5 is the focal length of the fifth lens, F6 is the focal length of the sixth lens, H is the image height corresponding to the maximum field of view of the optical lens, F is the total focal length of the optical lens, and θ is the radian value of the maximum field of view of the optical lens.

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

3. The optical lens according to claim 1 or 2, characterized in that, The optical lens satisfies at least one of the following relationships: 51.66≤(FOV×F) / H / 1°≤88.22, 5.12≤TTL / F≤9.20, 0.01≤TTL / H / FOV×1°≤0.04, 1.38≤TTL / DMAX≤2.45, 0.48≤(F×θ) / D≤1.07, 0<D / H / FOV×1°≤0.02, 0.28≤D / H / F ×1mm≤0.62, 0.09≤BFL / TTL≤0.33, 0.11≤BFL / TL≤0.45, 0.34≤F / H≤0.64, 0.85≤F / ENPD≤1.61, 0.04≤F / ENPD / D×1mm≤0.14, 1.14≤DST / F≤2.87, 0.90≤(F / H)×θ≤1.54 and 2.49≤TTL / H≤3.91; Wherein, FOV is the maximum field of view of the optical lens, F is the total focal length of the optical lens group, H is the image height corresponding to the maximum field of view of the optical lens, TTL is the total optical length of the optical lens, DMAX is the maximum aperture of all lenses in the optical lens, θ is the radian value of the maximum field of view of the optical lens, D is the aperture of the first side of the first lens corresponding to the maximum field of view, BFL is the back focal length of the optical lens, TL is the length of the lens group along the optical axis in the optical lens, ENPD is the entrance pupil diameter of the optical lens, and DST is the entrance pupil diameter of the aperture stop in the optical lens.

4. The optical lens according to claim 1 or 2, characterized in that, The optical lens satisfies at least one of the following relationships: 5.15≤|R1 / R2|≤46.43, -2.58≤F1 / F≤-1.18, and -7.40≤R1×R2 / (R2-R1+CT1) / 1mm≤-3.32; where R1 is the radius of curvature of the first side surface of the first lens, R2 is the radius of curvature of the second side surface of the first lens, F1 is the effective focal length of the first lens, F is the total effective focal length of the optical lens, and CT1 is the center thickness of the first lens.

5. The optical lens according to claim 1 or 2, characterized in that, The optical lens satisfies at least one of the following relationships: 2.71≤F2 / F≤42.57 and 0.02≤R2 / F2≤0.42; where F2 is the effective focal length of the second lens, F is the total effective focal length of the optical lens, and R2 is the radius of curvature of the second side surface of the first lens.

6. The optical lens according to claim 1 or 2, characterized in that, The optical lens satisfies at least one of the following relationships: 0.70≤|R5 / R6|≤1.73 and 3.16≤F3 / F≤76.74; where R5 is the radius of curvature of the first side of the third lens, R6 is the radius of curvature of the second side of the third lens, F3 is the effective focal length of the third lens, and F is the total effective focal length of the optical lens.

7. The optical lens according to claim 1, characterized in that, The optical lens satisfies: 2.49≤|F4 / F|≤54.95, where F4 is the effective focal length of the fourth lens and F is the total effective focal length of the optical lens.

8. The optical lens according to claim 1 or 2, characterized in that, The optical lens satisfies at least one of the following relationships: 2.24≤F5 / F≤66.31 and 6.13≤R9×R10 / (R10-R9+CT5) / 1mm≤116.60, where F5 is the effective focal length of the fifth lens, F is the total effective focal length of the optical lens, R9 is the radius of curvature of the first side of the fifth lens, R10 is the radius of curvature of the second side of the fifth lens, and CT5 is the center thickness of the fifth lens.

9. The optical lens according to claim 1 or 2, characterized in that, The optical lens satisfies the following condition: 2.00≤|F6 / F|≤48.56, where F6 is the effective focal length of the sixth lens and F is the total effective focal length of the optical lens.

10. The optical lens according to claim 1 or 2, characterized in that, The optical lens satisfies at least one of the following relationships: 0.08≤T12 / TTL≤0.26, -0.50≤F1 / F2≤-0.03, and -1.02≤T12 / F1≤-0.36; where T12 is the on-axis distance between the second side surface of the first lens and the first side surface of the second lens, TTL is the total optical length of the optical lens, F1 is the effective focal length of the first lens, and F2 is the effective focal length of the second lens.

11. The optical lens according to claim 1 or 2, characterized in that, The optical lens satisfies: 0.14≤|F3 / F4|≤24.54, where F3 is the effective focal length of the third lens and F4 is the effective focal length of the fourth lens.

12. The optical lens according to claim 1 or 2, characterized in that, The optical lens satisfies at least one of the following relationships: 0 < T56 / TTL ≤ 0.06, 0 < T56 / F5 ≤ 0.08, 0.21 ≤ (1 / F5 + 1 / F6) × F ≤ 0.81, and 0.14 ≤ (CT5 + CT6) / TTL ≤ 0.39; where T56 is the on-axis distance between the fifth and sixth lenses, TTL is the total optical length of the optical lens, F5 is the effective focal length of the fifth lens, F6 is the effective focal length of the sixth lens, CT5 is the center thickness of the fifth lens, and CT6 is the center thickness of the sixth lens.

13. The optical lens according to claim 1 or 2, characterized in that, The optical lens satisfies at least one of the following relationships: 0.34≤(T23+T34+T45+T56) / F≤1.19, 0.59≤(1 / F2+1 / F3+1 / F4+1 / F5+1 / F6)×F≤1.07, 0.17≤(CT2+CT3+CT4) / TTL≤0.39, 0.14≤(T12+T23+T34+T45+T56) / TTL≤0.36, and -0.72≤(T23+T34+T45+T56) / F1≤-0.21, where T12 is the axial distance between the second side surface of the first lens and the first side surface of the second lens, T23 is the axial distance between the second side surface of the second lens and the first side surface of the third lens, and T34 is the axial distance between the second side surface of the second lens and the first side surface of the third lens. The axial distance between the second side surface of the third lens and the first side surface of the fourth lens, T45 is the axial distance between the second side surface of the fourth lens and the first side surface of the fifth lens, T56 is the axial distance between the second side surface of the fifth lens and the first side surface of the sixth lens, F1 is the effective focal length of the first lens, F2 is the effective focal length of the second lens, F3 is the effective focal length of the third lens, F4 is the effective focal length of the fourth lens, F5 is the effective focal length of the fifth lens, F6 is the effective focal length of the sixth lens, F is the total effective focal length of the optical lens, CT2 is the center thickness of the second lens, CT3 is the center thickness of the third lens, CT4 is the center thickness of the fourth lens, and TTL is the total optical length of the optical lens.

14. The optical lens according to claim 1 or 2, characterized in that, The optical lens satisfies: 0.09 ≤ (1 / F4 + 1 / F5) / T45 × 1mm 2 ≤2.95, where F4 is the effective focal length of the fourth lens, F5 is the effective focal length of the fourth lens, and T45 is the on-axis distance between the second side surface of the fourth lens and the first side surface of the fifth lens.

15. The optical lens according to claim 1 or 2, characterized in that, The optical lens satisfies: 3.10≤|R1 / F1|≤34.10, where R1 is the radius of curvature of the first lens and F1 is the effective focal length of the first lens.

16. The optical lens according to claim 1 or 2, characterized in that, The optical lens satisfies any one of the following relationships: 60.786≤(FOV×F) / H / 1°≤76.716, 6.031≤TTL / F≤7.999, 0.016≤TTL / H / FOV×1°≤0.027, 1.633≤TTL / DMAX≤2.128, 0.570≤(F×θ) / D≤0.930, 0.009≤D / H / FOV×1°≤0.014, 0.332≤D / H / F×1mm≤0.538, 0.114≤BFL / TTL≤0.282, 0.128≤BFL / TL≤0.393, 0.411≤F / H≤0.552, 1≤F / ENPD≤1.4 , 0.054≤F / ENPD / D×1mm≤0.117, 1.342≤DST / F≤2.493, 0.004≤(H / 2) / (F×tan(θ / 2))≤0.535, 1.061≤(F / H)×θ≤1.339, 2.933≤TTL / H≤3.396, 0.098≤T12 / TTL≤0.218, 0.002≤T56 / TTL≤0.05, 0.054≤(T23+T34+T45+T56) / TTL≤0.140, 0.173≤(T12+T23+T34+T45+T56) / TTL≤0.313, 0.204≤(CT2+CT3+CT4) / TTL≤0.333, 0.169≤(CT5+CT6) / TTL≤0.331, 6.067≤|R1 / R2|≤40.366, 0.8 25≤|R5 / R6|≤1.503, -2.243≤F1 / F≤-1.394, 3.192≤F2 / F≤37.016, 3.719≤F 3 / F≤66.725, 2.937≤|F4 / F|≤47.78, 2.643≤F5 / F≤57.655, 2.359≤|F6 / F|≤ 42.219, 0.167≤|F3 / F4|≤21.335, -0.439≤F1 / F2≤-0.045, -0.835≤(1 / F1+ 1 / F2+1 / F3) / (1 / F4+1 / F5+1 / F6)≤-0.529, 0.704≤(1 / F2+1 / F3+1 / F4+1 / F5 +1 / F6)×F≤0.929, 0≤T56 / F5≤0.065, -0.88≤T12 / F1≤-0.424, 7.222≤R9×R1 0 / (R10-R9+CT5) / 1mm≤101.388, -6.431≤R1×R2 / (R2-R1+CT1) / 1mm≤-3.91 6. 0.258≤(1 / F5+1 / F6)×F≤0.703, 0.4≤(T23+T34+T45+T56) / F≤1.032, -0.618≤(T23+T34+T45+T56) / F1≤-0.248、0.109≤(1 / F4+1 / F5) / T45×1mm. 2 ≤2.558、0.031≤R2 / F2≤0.365、3.653≤|R1 / F1|≤29.646; Wherein, FOV is the maximum field of view of the optical lens, F is the total focal length of the optical lens group, H is the image height corresponding to the maximum field of view of the optical lens, TTL is the total optical length of the optical lens, DMAX is the maximum aperture of all lenses in the optical lens, θ is the radian value of the maximum field of view of the optical lens, D is the aperture of the first side of the first lens corresponding to the maximum field of view of the optical lens, BFL is the back focal length of the optical lens, TL is the length of the lens group along the optical axis in the optical lens, ENPD is the entrance pupil diameter of the optical lens, DST is the entrance pupil diameter of the aperture stop in the optical lens, T12 is the axial distance between the second side of the first lens and the first side of the second lens, T23 is the axial distance between the second side of the second lens and the first side of the third lens, T34 is the axial distance between the second side of the third lens and the first side of the fourth lens, and T45 is the axial distance between the second side of the fourth lens and the first side of the fifth lens. The axial distance between the surfaces, T56 is the axial distance between the second side surface of the fifth lens and the first side surface of the sixth lens, CT1 is the center thickness of the first lens, CT2 is the center thickness of the second lens, CT3 is the center thickness of the third lens, CT4 is the center thickness of the fourth lens, CT5 is the center thickness of the fifth lens, CT6 is the center thickness of the sixth lens, F1 is the effective focal length of the first lens, F2 is the effective focal length of the second lens, F3 is the effective focal length of the third lens, F4 is the effective focal length of the fourth lens, F5 is the effective focal length of the fifth lens, F6 is the effective focal length of the sixth lens, R1 is the radius of curvature of the first side surface of the first lens, R2 is the radius of curvature of the second side surface of the first lens, R5 is the radius of curvature of the first side surface of the third lens, R6 is the radius of curvature of the second side surface of the third lens, R9 is the radius of curvature of the first side surface of the fifth lens, and R10 is the radius of curvature of the second side surface of the fifth lens.

17. An electronic device, characterized in that, include: Optical lens according to any one of claims 1 to 16; as well as, At least one of an imaging element and a light source; The imaging element is used to convert the optical image or optical information formed by the optical lens into an electrical signal; The light source is located on the second side of the optical lens. The light emitted by the light source is projected onto the first side of the optical lens after passing through the optical lens, and forms an image or illuminated area on the first side of the optical lens.

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