Optical lens and electronic device

Abstract

The application discloses an optical lens and an electronic device. The optical lens comprises, in sequence from a first side to a second side along an optical axis, a first lens with negative optical power, a first side of which is a convex surface and a second side of which is a concave surface; a second lens with optical power, a first side of which is a concave surface; a third lens with optical power; a fourth lens with optical power, a second side of which is a convex surface; a fifth lens with optical power; a sixth lens with positive optical power; a seventh lens with negative optical power; and an eighth lens with optical power, a first side of which is a convex surface and a second side of which is a concave surface; wherein the number of lenses with optical power in the optical lens is eight, the optical lens satisfies 4.3 <= TTL / F <= 6.5, 0.75 <= R82 / F <= 3.5, 0.008 <= (d34+d45) / TTL <= 0.032, 1.2 <= |F2 / F| <= 20, d56 / TTL <= 0.02, and 0.01 <= F*(1 / F3+1 / F4+1 / F5) <= 1.8.

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 continuous development of the automotive industry, especially the rapid innovation of autonomous driving technology in recent years, the market has become increasingly demanding of lenses, especially automotive side-view lenses. For example, lenses are required to be able to match the front-end requirements of machine vision, such as small aperture, high light throughput, miniaturization, and high resolution. In other words, the market needs automotive lens product designs that combine the above advantages.

[0003] However, the lenses in the relevant technologies have the following problems, making it difficult to meet market demands:

[0004] 1) It is difficult for automotive lenses in related technologies to meet the multi-faceted requirements of high pixel count, miniaturization, and high light transmission; 2) Lenses in related technologies that can achieve high light transmission usually require a large aperture, making it difficult to meet the requirements of light transmission, small aperture, and miniaturization; 3) Automotive lenses in related technologies are prone to unstable imaging performance and low image quality at night. Summary of the Invention

[0005] One aspect of this application provides an optical lens, which sequentially comprises, from a first side to a second side along the optical axis: a first lens with negative optical power, wherein its first side surface is convex and its second side surface is concave; a second lens with optical power, wherein its first side surface is concave; a third lens with optical power; a fourth lens with optical power, wherein its second side surface is convex; a fifth lens with optical power; a sixth lens with positive optical power; a seventh lens with negative optical power; and an eighth lens with optical power, wherein its first side surface is convex and its second side surface is concave; wherein the number of lenses with optical power in the optical lens is eight, and the optical lens satisfies: 4.3≤TTL / F≤6.5, 0.75≤R82 / F≤3.5, 0.0 08≤(d34+d45) / TTL≤0.032,1.2≤|F2 / F|≤20,d56 / TTL≤0.02,0.01≤F*(1 / F3+1 / F4+1 / F5)≤1.8,where F is the total effective focal length of the optical lens, TTL is the total optical length of the optical lens, R82 is the radius of curvature of the second side of the eighth lens, d34 is the distance between the third and fourth lenses along the optical axis, d45 is the distance between the fourth and fifth lenses along the optical axis, d56 is the distance between the fifth and sixth lenses along the optical axis, 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, and F5 is the effective focal length of the fifth lens. The optical lens provided in this application, by having a negative optical power for the first lens, can diffuse the collected large field-of-view light as much as possible, causing the light to rise. Therefore, under a fixed field of view, this allows the rear optical system to have a larger light-receiving surface, and can also enlarge the aperture, achieving greater light intake and increasing image brightness. Making the first side of the first lens convex facilitates light convergence, preventing excessive divergence of object-side light and better compressing the light entering through the first side. This is beneficial for collecting large-angle light within a limited radial space, while also reducing the height of light incident on the second side of the first lens, thereby reducing the lens aperture and facilitating miniaturization. Furthermore, in practical applications, this design allows water droplets to slide off, reducing their impact on image quality. The second side of the first lens is concave, causing some divergence of the light emanating from it. This results in a larger effective aperture when the light enters the rear optical system, which not only helps balance aberrations and improve relative illumination in the rear optical system but also allows for a larger aperture, achieving a small FNO (no focal length).By satisfying 4.3≤TTL / F≤6.5, the ratio of the total optical length to the total effective focal length of the optical lens can be reasonably controlled, which can effectively limit the length of the optical lens and facilitate the miniaturization and telephoto capabilities of the optical lens. By satisfying 0.75≤R82 / F≤3.5 and making the second side of the lens closest to the imaging plane (e.g., the eighth lens) concave, aberrations in the central and peripheral fields of view can be balanced, resolving power can be improved, and light can be diverged to reach a higher imaging position, enabling large-chip imaging. By satisfying 0.008≤(d34+d45) / TTL≤0.032, the spacing distance (e.g., air gap) along the optical axis between the third and fourth lenses, and between the fourth and fifth lenses can be reasonably controlled, making the entire optical system structure compact, achieving a short total optical length, which is beneficial for miniaturization, and also reducing the optical path difference between the central and peripheral rays. Controlling the effective focal length of the second lens to be relatively large allows the light diverged by the first lens to transition smoothly in the second lens. Meanwhile, by making the first side of the second lens concave, the light collected and dispersed by the first lens can be dispersed again, allowing the light to reach a higher position. This not only enables a small aperture at the front end but also helps to expand the aperture, allowing more light to pass through the optical system and thus increasing the overall light transmission. By satisfying d56 / TTL≤0.02, the spacing between the fifth and sixth lenses along the optical axis is kept small, which is beneficial for miniaturization. Simultaneously, controlling the focal length distribution of the preceding and following lenses of the fifth and sixth lenses and satisfying 0.008≤(d34+d45) / TTL≤0.032 facilitates the close proximity of light rays between the fourth and eighth lenses, resulting in similar aperture sizes for each lens. This, in turn, contributes to achieving a small overall aperture and low sensitivity for the optical lens. By satisfying 0.01≤F*(1 / F3+1 / F4+1 / F5)≤1.8, the effective focal lengths of the third, fourth, and fifth lenses are controlled, causing light rays to be compressed between the third and fifth lenses after passing through the aperture stop. This prevents excessive light divergence, reduces light energy loss, and improves image quality. Furthermore, it facilitates closer aperture sizes for all lenses in the optical system, further achieving overall miniaturization and a smaller total optical length. In summary, the optical lens provided by the embodiments of this application can achieve at least one beneficial effect, including a small front-end aperture, high light throughput, miniaturization, and high resolution.

[0006] In one embodiment, the second lens has negative optical power and its second side surface is convex; or the second lens has positive optical power and its second side surface is either convex or concave.

[0007] In one embodiment, the third lens has positive optical power, with its first side being convex and its second side being either convex or concave; or the third lens has negative optical power, with its first side being concave and its second side being convex, or its first side being convex and its second side being concave.

[0008] In one embodiment, the fourth lens has positive optical power and its first side surface is convex or concave; or the fourth lens has negative optical power and its first side surface is concave.

[0009] In one embodiment, the fifth lens has negative optical power, with its first side being convex or concave and its second side being concave, or its first side being concave and its second side being convex; or the fifth lens has positive optical power, with its first side being convex and its second side being convex or concave, or its first side being concave and its second side being convex.

[0010] In one embodiment, the first side surface of the sixth lens is convex, and the second side surface is either convex or concave, or the first side surface is concave and the second side surface is convex.

[0011] In one embodiment, the first side surface of the seventh lens is either convex or concave, and the second side surface is concave; or the first side surface is concave and the second side surface is convex.

[0012] In one embodiment, the eighth lens has positive or negative optical power.

[0013] In one embodiment, the fifth and sixth lenses of the optical lens are cemented together to form a cemented joint; or the sixth and seventh lenses are cemented together to form a cemented joint.

[0014] In one embodiment, the optical lens satisfies: 0.7≤F6 / F≤2, where F6 is the effective focal length of the sixth lens and F is the total effective focal length of the optical lens.

[0015] In one embodiment, the optical lens satisfies: -5≤F7 / F≤-0.4, where F7 is the effective focal length of the seventh lens and F is the total effective focal length of the optical lens.

[0016] In one embodiment, the optical lens satisfies: 0.65≤(H / 2) / (F*tan(θ / 2))≤1, where F is the total effective focal length of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, and θ is the radian value corresponding to the maximum field of view of the optical lens.

[0017] In one embodiment, the optical lens satisfies: (d56*F6) / (TTL*F)≤0.02, where F is the total effective focal length of the optical lens, d56 is the distance between the fifth and sixth lenses along the optical axis, and TTL is the total optical length of the optical lens.

[0018] In one embodiment, the optical lens satisfies: -1.25≤R12 / R21≤-0.1, where R21 is the radius of curvature of the first side surface of the second lens and R12 is the radius of curvature of the second side surface of the first lens.

[0019] In one embodiment, the optical lens satisfies: 0.8≤F34 / F≤5, where F is the total effective focal length of the optical lens and F34 is the combined focal length of the third and fourth lenses.

[0020] In one embodiment, the optical lens satisfies: 1.3≤Dmax / Dmin≤1.75, where Dmax is the maximum aperture among all lenses corresponding to the maximum field of view of the optical lens, and Dmin is the minimum aperture among all lenses corresponding to the maximum field of view of the optical lens.

[0021] In one embodiment, the optical lens satisfies: 1.45≤R11 / F≤5, where R11 is the radius of curvature of the first side surface of the first lens, and F is the total effective focal length of the optical lens.

[0022] In one embodiment, the optical lens satisfies: d56 / F≤0.1, where d56 is the distance between the fifth and sixth lenses along the optical axis, and F is the total effective focal length of the optical lens.

[0023] In one implementation, the optical lens satisfies at least one of the following: 2 rad -1 ≤TTL / H / θ≤3.5rad -1 ,2.65≤TTL / Dmax≤4,0.5rad -1 ≤D / H / θ≤1.2rad -1 0.5≤F / H≤1, 0.08mm -1 ≤F / ENPD / D≤0.25mm -1, -4≤F1 / F≤-1.2, |F3 / F|<600, |F4 / F|<1000, |F5 / F|<500, F8 / F|<50, 0.15≤R11 / TTL≤1.25, -10≤R42 / F≤-0.8, 0.001≤d78 / TTL≤0.0085, 0.04≤d3 / TTL≤0.2, 0.05≤|R21| / (|R22|+d2)≤0.85, 1≤d12 / d(L2~L 8) ≤ 8.5, -6 ≤ F12 / F ≤ -0.3, -3 ≤ F6 / F7 ≤ -0.15, or the optics also include the aperture stop, and satisfy 0.75 ≤ DST / F ≤ 1.5, where F is the total effective focal length of the optical lens, 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, θ is the radian value corresponding to the maximum field of view of the optical lens, Dmax is the maximum aperture among all lenses corresponding to the maximum field of view of the optical lens, and D is the optical lens diameter. The maximum field of view of the head corresponds to the maximum aperture of the first side of the first lens, ENPD is the entrance pupil diameter of the optical lens, DST is the effective aperture of the aperture stop, F1 is the effective focal length of the first lens, F12 is the combined focal length of the first and second lenses, 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, F8 is the effective focal length of the eighth lens, R11 is the radius of curvature of the first side of the first lens, R42 is the radius of curvature of the second side of the fourth lens, d78 is the distance between the seventh and eighth lenses along the optical axis, d3 is the center thickness of the third lens, R21 is the radius of curvature of the first side of the second lens, R22 is the radius of curvature of the second side of the second lens, d2 is the center thickness of the second lens, d12 is the distance between the first and second lenses along the optical axis, and d(L2~L8) is the sum of the distances between adjacent lenses along the optical axis from the second lens to the eighth lens.

[0024] In one embodiment, the optical lens satisfies at least one of the following: 4.75 ≤ TTL / F ≤ 6, 2.4 rad. -1 ≤TTL / H / θ≤3rad -1 ,2.9≤TTL / Dmax≤3.5,0.7rad -1 ≤D / H / θ≤1rad -1 , 0.65≤F / H≤0.8, 0.13mm -1 ≤F / ENPD / D≤0.17mm -1, -3.4≤F1 / F≤-1.5, 1.4≤|F2 / F|≤14, -4.5≤F12 / F≤-0.5, |F3 / F|<500, |F4 / F|<600, |F5 / F|<300, |F8 / F|<30, 0.3≤R11 / TTL≤1, -1≤R12 / R21≤-0.2, 0 .95≤F34 / F≤4, -8.5≤R42 / F≤-1, 0.01≤(d34+d45) / TTL≤0.03, 0.95≤R82 / F≤3.1, 0.002≤d78 / TTL≤0.0085, 1.35≤Dmax / Dmin≤1.72, 0.05≤d3 / TTL≤0.1 85, 0.07≤|R21| / (|R22|+d2)≤0.8, 1.1≤d12 / d(L2~L8)≤8, 1.6≤R11 / F≤4.8, 0.74≤(H / 2) / (F*tan(θ / 2))≤0.9, 0.85≤F6 / F≤1.85, -4.5≤F7 / F≤-0.5, -2.5≤F6 / F7≤-0.2, 0.02≤F*(1 / F3+1 / F4+1 / F5)≤1.5, d56 / TTL≤0.0125, d56 / F≤0.08, (d56*F6) / (TTL*F)≤0.0175, or the optical lens also includes an aperture stop, and satisfies 0.95≤DST / F≤1.25, where F is the total effective focal length of the optical lens, F1 is the effective focal length of the first lens, F2 is the effective focal length of the second lens, F12 is the combined focal length of the first and second lenses, F3 is the effective focal length of the third lens, F4 is the effective focal length of the fourth lens, F34 is the combined focal length of the third and fourth lenses, F5 is the effective focal length of the fifth lens, F7 is the effective focal length of the seventh lens, F8 is the effective focal length of the eighth lens, 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, θ is the radian value corresponding to the maximum field of view of the optical lens, Dmax is the maximum aperture among all lenses corresponding to the maximum field of view of the optical lens, Dmin is the minimum aperture among all lenses corresponding to 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, and ENPD is the optical lens... The entrance pupil diameter is given by: DST is the effective aperture of the aperture stop; R11 is the radius of curvature of the first side surface of the first lens; R12 is the radius of curvature of the second side surface of the first lens; R21 is the radius of curvature of the first side surface of the second lens; R22 is the radius of curvature of the second side surface of the second lens; R42 is the radius of curvature of the second side surface of the fourth lens; R82 is the radius of curvature of the second side surface of the eighth lens; d3 is the center thickness of the third lens; d2 is the center thickness of the second lens; d12 is the distance between the first and second lenses along the optical axis; d78 is the distance between the seventh and eighth lenses along the optical axis; d34 is the distance between the third and fourth lenses along the optical axis; d45 is the distance between the fourth and fifth lenses along the optical axis; d56 is the distance between the fifth and sixth lenses along the optical axis; and d(L2~L8) is the sum of the distances between adjacent lenses along the optical axis from the second to the eighth lens.

[0025] In one embodiment, the optical lens satisfies at least one of the following: 5.0258 ≤ TTL / F ≤ 5.7252, 2.5821 rad. -1 ≤TTL / H / θ≤2.9506rad -1 ,3.0136≤TTL / Dmax≤3.4060,0.7833rad -1 ≤D / H / θ≤0.9529rad -1 ,0.6834≤F / H≤0.7698,0.1334mm -1 ≤F / ENPD / D≤0.1612mm -1, 0.7740≤(H / 2) / (F*tan(θ / 2))≤0.8750, -2.9295≤F1 / F≤-1.7836, 1.4135≤|F2 / F|≤12.3794, -3. 9892≤F12 / F≤-0.7715, 1.5428≤|F3 / F|≤308.2476, -478.2828≤F4 / F≤14.4125, -3.7678≤F5 / F≤19 5.1263, --16.7653≤F8 / F≤5.6859, 0.3500≤R11 / TTL≤0.8108, 1.8550≤R11 / F≤4.6315, -0.8174≤R 12 / R21≤-0.3252, 1.0792≤F34 / F≤3.2774, -7.1775≤R42 / F≤-1.0471, 0.0054≤(d34+d45) / TTL≤0.0 232, 1.1136≤R82 / F≤3.0158, 0.0027≤d78 / TTL≤0.0079, 1.4387≤Dmax / Dmin≤1.7094, 0.0540≤d3 / TTL≤0.1618,0.0821≤|R21| / (|R22|+d2)≤0.7832,1.1716≤d12 / d2~8≤7.7747,0.9861≤F6 / F≤1.7 978, -4.0191≤F7 / F≤-0.6642, -1.9559≤F6 / F7≤-0.2587, 0.0341≤F*(1 / F3+1 / F4+1 / F5)≤1.1100, d56 / TTL≤0.0088, d56 / F≤0.0492, (d56*F6) / (TTL*F)≤0.0107, or the optical lens also includes an aperture stop, and satisfies 1.0195≤DST / F≤1.2060, where F is the total effective focal length of the optical lens, F1 is the effective focal length of the first lens, F2 is the effective focal length of the second lens, F12 is the combined focal length of the first and second lenses, F3 is the effective focal length of the third lens, F4 is the effective focal length of the fourth lens, F34 is the combined focal length of the third and fourth lenses, F5 is the effective focal length of the fifth lens, F6 is the effective focal length of the sixth lens, F7 is the effective focal length of the seventh lens, F8 is the effective focal length of the eighth lens, 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, θ is the radian value corresponding to the maximum field of view of the optical lens, Dmax is the maximum aperture among all lenses corresponding to the maximum field of view of the optical lens, Dmin is the minimum aperture among all lenses corresponding to 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, EN PD is the entrance pupil diameter of the optical lens, DST is the effective aperture of the aperture stop, R11 is the radius of curvature of the first side surface of the first lens, R12 is the radius of curvature of the second side surface of the first lens, R21 is the radius of curvature of the first side surface of the second lens, R22 is the radius of curvature of the second side surface of the second lens, R42 is the radius of curvature of the second side surface of the fourth lens, R82 is the radius of curvature of the second side surface of the eighth lens, d3 is the center thickness of the third lens, d2 is the center thickness of the second lens, d12 is the distance between the first and second lenses along the optical axis, d78 is the distance between the seventh and eighth lenses along the optical axis, d34 is the distance between the third and fourth lenses along the optical axis, d45 is the distance between the fourth and fifth lenses along the optical axis, d56 is the distance between the fifth and sixth lenses along the optical axis, and d(L2~L8) is the sum of the distances between adjacent lenses along the optical axis from the second to the eighth lens.

[0026] Another aspect of this application provides an electronic device including an optical lens of any of the above embodiments, and the electronic device further includes at least one of an imaging element and a light source; wherein the imaging element is used to convert the optical image formed by the optical lens into an electrical signal, and the light emitted by the light source is projected onto a target area after passing through the optical lens to form an image or illuminate the area. Attached Figure Description

[0027] Other features, objects, and advantages of this application will become more apparent from the following detailed description of the embodiments, taken in conjunction with the accompanying drawings. In the drawings:

[0028] Figures 1 to 34 Schematic diagrams of the optical lenses according to Embodiments 1 to 34 of this application are shown respectively; and Figure 35 , Figure 36 Schematic diagrams of MTF curves of optical lenses according to Embodiments 1 and 2 of this application are shown respectively. Detailed Implementation

[0029] To facilitate understanding of this application, a more complete description of the application will be provided below with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of the application and are not intended to limit the scope of the application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0030] It should be noted that in this specification, the terms "first," "second," "third," etc., are used only to distinguish one feature from another and do not imply any limitation on the features. Therefore, without departing from the teachings of this application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0031] In the accompanying drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are illustrated by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustrative purposes only and are not strictly to scale.

[0032] 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 shape in the paraxial region can be determined according to common methods in the art, such as using the sign of the R value (R refers to the radius of curvature of the paraxial region) to determine concavity or convexity. For example, when the optical lens provided in this application is used for imaging, the surface of each lens closest to the subject is called the object-side surface of the lens, and the surface of each lens closest to the imaging side is called the image-side surface of the lens. For the object-side surface, when the R value is positive, it is determined to be convex, and when the R value is negative, it is determined to be concave; for the image-side surface, when the R value is positive, it is determined to be concave, and when the R value is negative, it is determined to be convex.

[0033] It should be understood that the optical lens provided in this application can be used for photography, projection, and LiDAR lenses. When the optical lens provided in this application is used as a camera lens or a LiDAR receiver lens, the term "first side" as used herein refers to the object side, and "second side" refers to the image side. Light from the object side can, for example, form an image on the image side. The camera lens can 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 projection lens or a radar transmitter lens, the term "first side" as used herein refers to the object side, and "second side" refers to the light source side. The second side of the optical lens can be provided with a light source, which can provide light with or without image information. The light from the light source side is projected onto the first side after passing through the optical lens, for example, forming an image or illuminating an area on the first side.

[0034] It should also be understood that the terms "comprising," "including," "having," "containing," and / or "comprising," when used in this specification, indicate the presence of the stated features, elements, and / or components, but do not exclude the presence or addition of one or more other features, elements, components, and / or combinations thereof. Furthermore, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire list of features, not individual elements in the list. Additionally, when describing embodiments of this application, the word "may" is used to mean "one or more embodiments of this application." And the term "exemplary" is intended to refer to an example or illustration.

[0035] Unless otherwise specified, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms (e.g., those defined in common dictionaries) shall be interpreted as having a meaning consistent with their meaning in the context of the relevant art and shall not be interpreted in an idealized or overly formalized sense, unless expressly so specified herein.

[0036] 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.

[0037] The features, principles and other aspects of this application are described in detail below.

[0038] In an exemplary embodiment, the optical lens includes, for example, eight lenses with optical power, namely a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens. These eight lenses are arranged sequentially along the optical axis from the first side to the second side.

[0039] In an exemplary embodiment, the optical lens provided in this application can be used as, for example, a vehicle-mounted lens or a lidar receiver lens. In this case, the first side of the optical lens can be the object side, and the second side can be the image side. Light from the object side can be imaged on the image side. The second side of the optical lens can be provided with an imaging surface.

[0040] In an exemplary embodiment, the optical lens provided in this application can be used as, for example, a projection lens or a lidar transmitter lens. In this case, the first side of the optical lens can be the object side, and the second side can be the light source side. Light from the light source side is projected onto the object side after passing through the optical lens, forming an image or illuminating an area on the object side. The second side of the optical lens can be provided with the light source surface of the optical lens.

[0041] In an exemplary embodiment, the optical lens may further include a photosensitive element disposed on the second side. Optionally, the photosensitive element disposed on the second side may be a photocoupled device (CCD) or a complementary metal oxide semiconductor device (CMOS).

[0042] In an exemplary embodiment, an aperture stop may be provided between the second lens and the third lens to limit the light beam, thereby further improving the imaging quality of the optical lens. This facilitates the effective focusing of light entering the optical system, reduces the aperture of the lenses at the front and rear ends of the optical system, and lowers the assembly sensitivity of the optical lens. However, it should be noted that the position of the aperture stop disclosed herein is merely an example and not a limitation; in alternative embodiments, the aperture stop may be placed in other positions as needed.

[0043] In an exemplary embodiment, at least one of the first to eighth lenses can be a spherical lens or an aspherical lens. In an exemplary embodiment, the third lens and / or the eighth lens can be aspherical lenses. This application does not specifically limit the number of spherical and aspherical lenses; when image quality is a primary concern, the number of aspherical lenses can be increased, and even all lenses can be aspherical. Aspherical lenses are characterized by a continuously changing curvature from the lens center to the periphery. Unlike spherical lenses, which have a constant curvature from the lens center to the periphery, aspherical lenses have better curvature radius characteristics, offering advantages in improving distortion aberrations and astigmatism. By using aspherical lenses, aberrations occurring during imaging can be eliminated as much as possible, thereby improving the lens's image quality. The use of aspherical lenses helps correct system aberrations and improves resolving power.

[0044] In an exemplary embodiment, the fifth and sixth lenses can be cemented together to form a cemented component. In an exemplary embodiment, the sixth and seventh lenses can be cemented together to form a cemented component. The optical lens provided by the embodiments of this application can form at least one cemented component to smoothly transition light from the front optical system to the imaging plane, reduce the total optical length, fully correct various aberrations and chromatic aberrations of the optical system, and improve resolution, optimize distortion, CRA, and other optical performance while ensuring the overall compact structure of the optical lens. Furthermore, forming a cemented component can also achieve the following technical effects: reduce the spacing distance (e.g., air gap) along the optical axis between the fifth and sixth lenses and / or the sixth and seventh lenses to reduce the total optical length of the optical lens, which is beneficial for miniaturization of the optical lens; reduce the assembly components between the two lenses, reduce processes, and reduce costs; reduce tolerance sensitivity problems such as tilt / eccentricity caused by the two lenses during assembly; reduce light loss caused by reflection between the two lenses and improve illumination; and reduce field curvature to correct off-axis point aberrations of the optical lens. Furthermore, controlling the spacing between adjacent lenses along the optical axis to be small, and making the eighth lens crescent-shaped with a convex first side and a concave second side, helps to make the light aperture smaller in the entire optical system, thereby achieving a small overall aperture of the optical lens, while also facilitating aberration correction and high resolution.

[0045] In an exemplary embodiment, the first lens may have a negative optical power. A negative optical power in the first lens can diffuse the collected large field-of-view light as much as possible, causing the light to rise upwards. Therefore, under a given field of view, this allows the rear optical system to have a larger light-receiving surface, and can also enlarge the aperture, achieving a greater amount of light intake and increasing image brightness. In an exemplary embodiment, the first side of the first lens can be convex, and the second side can be concave. A convex first side of the first lens is beneficial for converging light, preventing excessive divergence of object-side light, and better compressing the light entering through the first side. This facilitates the collection of large-angle light within a limited radial space. Simultaneously, it reduces the height of the light incident on the second side of the first lens, thereby reducing the lens aperture and enabling miniaturization. Furthermore, in practical applications, this design facilitates water droplet sliding, thus reducing the impact of water droplets on image quality. The second side of the first lens is concave, which causes the light rays emitted from the second side of the first lens to diverge to a certain extent. This results in a larger effective aperture when the light rays enter the rear optical system, which not only helps the rear optical system balance aberrations and improve relative illumination, but also helps to increase the aperture of the aperture and achieve a small FNO.

[0046] In an exemplary embodiment, the second lens may have a negative optical power. A negative optical power in the second lens can diverge light rays passing through the front optical system, causing the light rays to rise and providing a larger light-receiving surface for the rear optical system. This results in a larger aperture, greater light intake, and increased image brightness. In an exemplary embodiment, the first side of the second lens can be concave, and the second side can be convex. A concave first side of the second lens allows for a smaller incident angle of light rays entering the second lens, ensuring smooth and stable light delivery to the rear. In an exemplary embodiment, the second lens is shaped like a meniscus concave towards the object side. Combined with the first lens, which has a concave second side, this allows for a smooth transition of light rays, reducing light loss and improving illumination at the edges of the field of view. It also alters the trajectory of edge light rays, allowing for a smaller front aperture and miniaturized optical lens design. A convex second side of the second lens allows for a smaller exit angle of light rays exiting the second lens, resulting in smoother light emission. This reduces optical path difference, minimizes defocusing between different fields of view, and improves image quality. In an exemplary embodiment, the first side surface of the second lens can be concave, and the second side surface can also be concave. The fact that both the first and second side surfaces of the second lens are concave facilitates rapid light divergence, separating the central and peripheral rays of each field of view, increasing the aperture, and enhancing system illumination. Simultaneously, it facilitates the correction of aberrations between peripheral and central rays, achieving high resolution.

[0047] In an exemplary embodiment, the second lens may have positive optical power. Positive optical power allows the second lens to appropriately converge and gather light rays diverging from the front optical system, and allows more peripheral light rays to pass through the aperture stop, thereby increasing relative illumination while reducing the aperture of the rear optical system. In an exemplary embodiment, the first side surface of the second lens may be concave, and the second side surface may be convex. In this embodiment, the second lens is shaped like a meniscus concave towards the object side. Combined with the first lens, whose second side surface is concave, this allows for a smooth transition of light rays, reducing light energy loss and improving illumination at the edge of the field of view. It also alters the trajectory of edge light rays, enabling a reduction in the front aperture of the lens and thus achieving miniaturization of the optical lens design. The convex second side surface of the second lens results in a smaller exit angle for the light rays exiting the second lens, allowing for a smoother light exit, thereby reducing optical path difference, minimizing defocusing between different fields of view, and improving image quality.

[0048] In an exemplary embodiment, the third lens may have positive optical power, and its first side surface may be convex, as may its second side surface. Both the first and second sides of the third lens are convex and have positive optical power, effectively converging the diverging light rays emitted from the front optical system, allowing the diverging light rays to smoothly enter the rear optical system, thus reducing the rear aperture. The convexity of the first side surface of the third lens effectively converges the light rays and lowers the height of the light rays entering the rear optical system, thereby reducing the rear aperture and facilitating the miniaturization of the optical lens. The convexity of the second side surface of the third lens further alters the light trajectory, lowering the height of the light rays entering the rear optical system, further reducing the rear aperture and facilitating the miniaturization of the optical lens.

[0049] In an exemplary embodiment, the third lens may have positive optical power, with its first side surface being convex and its second side surface being concave. The positive optical power of the third lens facilitates light convergence, thereby allowing diverging light to smoothly enter the rear optical system while simultaneously lowering the position of the light entering the rear optical system, reducing the rear aperture and achieving miniaturization of the optical lens. The convex first side surface of the third lens helps to lower the light trajectory, thus better receiving the light emitted from the second lens, reducing light loss in each field of view, and improving the illumination in each field of view. The concave second side surface of the third lens facilitates light divergence, enabling the light to reach a higher imaging position for large target imaging and achieving greater light intake, increasing image brightness.

[0050] In an exemplary embodiment, the third lens may have negative optical power, with its first side surface being concave and its second side surface being convex. The negative optical power of the third lens allows it to diverge the light rays that have been converged and compressed by the second lens, enabling the light to reach a higher imaging position and achieving large-chip imaging. In this embodiment, the first side surface of the third lens is concave, and its shape can be a meniscus concave towards the object side. This reduces the angle of incidence of the light rays entering the third lens, minimizing light loss and improving the illumination of the edge field of view. It also alters the trajectory of edge light rays, reducing the front aperture of the optical lens and further miniaturizing the lens design. The second side surface of the third lens is convex, which helps to converge light rays and lower the height of the light rays entering the rear optical system, thereby reducing the rear aperture and facilitating the miniaturization of the optical lens.

[0051] In an exemplary embodiment, the third lens may have negative optical power, with its first side being convex and its second side being concave. The negative optical power of the third lens facilitates light divergence, further diverging the upward-trending light received from the second lens, allowing the light to reach a higher imaging position and enabling large-chip imaging. The convex first side of the third lens helps to lower the light trajectory. In this embodiment, it can be paired with a second lens whose second side is convex, allowing the outgoing light converged by the second lens to smoothly enter the rear system, thereby reducing sensitivity, improving resolution, and reducing the aperture of the rear system, which is beneficial for miniaturization. The concave second side of the third lens helps to diverge the light converged by the front optical system, not only reducing the aperture of the front lens but also providing a larger light-receiving surface for the rear optical system, achieving greater light intake and increasing image brightness.

[0052] In an exemplary embodiment, the fourth lens may have positive optical power, and its first side surface may be convex, as may its second side surface. Both the first and second sides of the fourth lens are convex and have positive optical power, effectively converging the diverging light rays emitted from the front optical system, allowing the diverging light rays to smoothly enter the rear optical system, thus reducing the rear aperture. The convexity of the first side surface of the fourth lens effectively converges the light rays and lowers the height of the light rays entering the rear optical system, thereby reducing the rear aperture and facilitating the miniaturization of the optical lens. The convexity of the second side surface of the fourth lens further alters the light trajectory, lowering the height of the light rays entering the rear optical system, thereby reducing the rear aperture and facilitating the miniaturization of the optical lens.

[0053] In an exemplary embodiment, the fourth lens may have positive optical power, with its first side surface being concave and its second side surface being convex. The fourth lens, having positive optical power, converges the light rays emitted from the front optical system, allowing the light to smoothly enter the rear optical system and reducing the rear aperture. The concave first side surface of the fourth lens reduces the aperture, causing the light rays to enter the rear system in a divergent direction, thereby allowing peripheral light rays to reach a higher imaging position. The convex second side surface of the fourth lens facilitates light convergence, further reducing the light beam height and the rear aperture, contributing to the miniaturization of the optical lens.

[0054] In an exemplary embodiment, the fourth lens may have negative optical power, with its first side surface being concave and its second side surface being convex. The negative optical power of the fourth lens allows it to diverge light rays emitted from the front optical system. In this embodiment, it can be used in conjunction with a third lens whose first and second sides are both convex and have positive optical power to adjust the optical path difference between the central and peripheral light rays, thereby improving resolving power. Furthermore, the concave first side surface of the fourth lens reduces the aperture of the light receiver, allowing the light rays to enter the rear system in a divergent direction, enabling peripheral light rays to reach a higher imaging position. The convex second side surface of the fourth lens helps to converge the light rays, thereby reducing the light beam height and decreasing the rear aperture, which is beneficial for miniaturizing the optical lens.

[0055] In an exemplary embodiment, the fifth lens may have negative optical power, with its first side being convex and its second side being concave. The negative optical power of the fifth lens, when paired with the positive optical power of the fourth lens, balances the optical path difference between the center and periphery, improving resolving power. The convex first side of the fifth lens, combined with the convex second side of the fourth lens, allows light to converge twice, resulting in a smoother transition to the rear optical system. This reduces system sensitivity, improves resolving power, and allows for a smaller aperture in the rear optical system, facilitating miniaturization. The concave second side of the fifth lens helps to diverge light rays converged and emitted from the front optical system. This balances the optical path difference between the center and periphery while raising the light trajectory, allowing the light to reach a higher imaging position, thus enabling its use with larger chips.

[0056] In an exemplary embodiment, the fifth lens may have negative optical power, and its first side surface may be concave, as may its second side surface. Both the first and second sides of the fifth lens are concave, and it has negative optical power. Combined with the fourth lens, which has positive optical power, this balances the optical path difference between the center and periphery, improving resolution. The concave first side of the fifth lens better receives the light rays converging from the convex second side of the fourth lens and diverges the light, thereby balancing the optical path difference between the center and periphery and improving resolution. The concave second side of the fifth lens further diverges the light, raising the light trajectory and allowing the light to reach a higher imaging position, enabling the optical lens to be used with large-chip sensors.

[0057] In an exemplary embodiment, the fifth lens may have negative optical power, with its first side surface being concave and its second side surface being convex. The negative optical power of the fifth lens, combined with the positive optical power of the fourth lens, balances the optical path difference between the center and periphery, improving resolving power. The concave first side surface of the fifth lens better receives the light rays converged by the convex second side surface of the fourth lens and diverges the light, thereby balancing the optical path difference between the center and periphery and improving resolving power. The convex second side surface of the fifth lens converges the diverged light rays from the first side surface, thus lowering the light path and reducing the aperture of the rear optical system, which is beneficial for miniaturization of the rear end.

[0058] In an exemplary embodiment, the fifth lens may have positive optical power, and its first side surface may be convex, as may its second side surface. Both the first and second sides of the fifth lens are convex and have positive optical power, effectively converging light rays diverging from the front optical system, allowing the diverged light rays to smoothly enter the rear optical system, thus reducing the rear aperture. The convexity of the first side surface of the fifth lens effectively converges light rays and lowers the height of light rays entering the rear optical system, thereby reducing the rear aperture and facilitating the miniaturization of the optical lens. The convexity of the second side surface of the fifth lens further alters the light trajectory, lowering the height of light rays entering the rear optical system, further reducing the rear aperture and facilitating the miniaturization of the optical lens.

[0059] In an exemplary embodiment, the fifth lens may have positive optical power, with its first side being convex and its second side being concave. The fifth lens, having positive optical power, combined with the fourth lens, further converges light, lowers the light path, and reduces the aperture of the rear optical system, thus facilitating miniaturization. The convex first side of the fifth lens, combined with the convex second side of the fourth lens, allows light to converge twice, resulting in a smoother transition to the rear optical system. This reduces system sensitivity, improves resolution, and allows for a smaller aperture of the rear optical system, further contributing to miniaturization. The concave second side of the fifth lens helps to diverge light rays converged from the front optical system, balancing the optical path difference between the center and periphery while raising the light path, allowing the light to reach a higher imaging position, thus enabling its use with larger chips.

[0060] In an exemplary embodiment, the fifth lens may have positive optical power, with its first side surface being concave and its second side surface being convex. The positive optical power of the fifth lens allows it to converge light rays emitted from the front optical system, enabling the light to smoothly enter the rear optical system and reducing the rear aperture. The concave first side surface of the fifth lens reduces the aperture and diverges light rays into the rear system, allowing peripheral light rays to reach a higher imaging position. The convex second side surface of the fifth lens converges light rays, lowering their height and further reducing the rear aperture, thus contributing to the miniaturization of the optical lens.

[0061] In an exemplary embodiment, the sixth lens may have positive optical power, and its first side surface may be convex, as may its second side surface. Both the first and second sides of the sixth lens are convex and have positive optical power, effectively converging the diverging light rays emitted from the front optical system, allowing the diverging light rays to smoothly enter the rear optical system, thus reducing the rear aperture. The convexity of the first side surface of the sixth lens effectively converges the light rays and lowers the height of the light rays entering the rear optical system, thereby reducing the rear aperture and facilitating the miniaturization of the optical lens. The convexity of the second side surface of the sixth lens further alters the light trajectory, lowering the height of the light rays entering the rear optical system, thereby reducing the rear aperture and facilitating the miniaturization of the optical lens.

[0062] In an exemplary embodiment, the sixth lens may have positive optical power, with its first side surface being convex and its second side surface being concave. The sixth lens, having positive optical power, combined with the fourth lens, further converges light, lowers the light path, and reduces the aperture of the rear optical system, thus facilitating miniaturization. The convex first side of the sixth lens, combined with its convex second side, allows light to converge twice—through the fifth and sixth lenses—resulting in a smoother transition to the rear optical system. This reduces system sensitivity, improves resolution, and allows for a smaller aperture, further contributing to miniaturization. The concave second side of the sixth lens helps to diverge light rays converged from the front optical system, balancing the optical path difference between the center and periphery while raising the light path, allowing the light to reach a higher imaging position, thus enabling its use with larger chips.

[0063] In an exemplary embodiment, the sixth lens may have positive optical power, with its first side surface being concave and its second side surface being convex. The positive optical power of the sixth lens allows it to converge light rays emitted from the front optical system, enabling the light to smoothly enter the rear optical system and reducing the rear aperture. The concave first side surface of the sixth lens reduces the aperture and diverges light rays into the rear system, allowing peripheral light rays to reach a higher imaging position. The convex second side surface of the sixth lens converges light rays, lowering their height and further reducing the rear aperture, thus contributing to the miniaturization of the optical lens.

[0064] In an exemplary embodiment, the seventh lens may have negative optical power, and its first side surface may be concave, as may its second side surface. Both the first and second sides of the seventh lens are concave and have negative optical power. It can be cemented with a sixth lens, whose first and second sides are convex and have positive optical power, to form a cemented joint. This results in a compact optical lens structure and, while reducing the overall optical length, corrects various aberrations and chromatic aberrations, thereby improving the resolving power of the optical lens. The concave nature of the first and second sides of the seventh lens facilitates light divergence, raises the light beam height, and enlarges the image plane, while also balancing aberrations and improving resolving power.

[0065] In an exemplary embodiment, the seventh lens may have negative optical power, its first side surface may be convex, and its second side surface may be concave. The seventh lens, with its convex first side surface, concave second side surface, and negative optical power, can be cemented with a sixth lens, which has a convex first side surface, a concave second side surface, and positive optical power, to form a cemented joint. This results in a compact optical lens structure and, while reducing the overall optical length, corrects various aberrations and chromatic aberrations of the optical lens, improving its resolving power. The convex first side surface of the seventh lens facilitates the convergence of light rays emitted from the sixth lens, allowing the light to smoothly enter the rear system, thereby reducing sensitivity and improving resolving power. The concave second side surface of the seventh lens facilitates the divergence of light rays, raising the light beam height, enlarging the image plane, and balancing aberrations, further improving resolving power.

[0066] In an exemplary embodiment, the seventh lens may have negative optical power, with its first side surface being concave and its second side surface being convex. The seventh lens, with its concave first side surface, convex second side surface, and negative optical power, can be cemented with a sixth lens, whose first side surface is convex and its second side surface is concave and has positive optical power, to form a cemented joint. This results in a compact optical lens structure and, while reducing the overall optical length, corrects various aberrations and chromatic aberrations of the optical lens, improving its resolving power. The concave first side surface of the seventh lens facilitates light divergence, raising the light beam height, enlarging the image plane, and balancing aberrations, thus improving resolving power. The convex first side surface of the seventh lens can converge light, allowing it to smoothly enter the rear system, thereby reducing sensitivity and improving resolving power.

[0067] In an exemplary embodiment, the eighth lens may have positive optical power, with its first side surface being convex and its second side surface being concave. In this embodiment, the eighth lens may be an aspherical lens with positive optical power, which not only balances aberrations and improves resolving power but also reduces the ray path at the edge of the field of view, thus helping to reduce CRA (Collateral Aberration). The convexity of the first side surface of the eighth lens effectively corrects optical path differences across fields of view, helping to balance aberrations, and also reduces the ray path at the edge of the field of view, thus helping to reduce CRA. The concaveness of the second side surface of the eighth lens facilitates ray divergence, enlarges the image plane, and also balances aberrations, improving resolving power.

[0068] In an exemplary embodiment, the eighth lens may have negative optical power, with its first side surface being convex and its second side surface being concave. In this embodiment, the eighth lens may be an aspherical lens with positive optical power, which not only balances aberrations and improves resolving power but also suppresses the light path of rays at the edge of the field of view, thus helping to reduce CRA. The first side surface of the eighth lens is convex, which can effectively correct the optical path difference between different fields of view, helping to balance aberrations, and at the same time suppresses the light path of rays at the edge of the field of view, thus helping to reduce CRA. The second side surface of the eighth lens is concave, which is beneficial for diverging light, thereby facilitating the achievement of telephoto lenses and expanding the image plane, while also balancing aberrations and improving resolving power.

[0069] Figure 1 A schematic diagram of the structure of an optical lens according to an embodiment of this application is shown. The optical lens provided in this application can be used, for example, as a vehicle-mounted lens or a LiDAR receiver lens, in which case, Figure 1 In the image plane, IMA represents the imaging surface. Light from the object passes sequentially through surfaces S1 to S19 and is finally imaged onto the imaging surface located on the second side. An image sensing chip is disposed at the imaging surface. It should be understood that the optical lens provided in this application can also be used, for example, as a projection lens or a lidar transmitter lens. Figure 1In the middle IMA, light from the light source surface passes through each surface S19 to S1 in sequence and is finally projected onto the first side, forming an image or illuminating area on the first side.

[0070] In this application, F is the total effective focal length of the optical lens, F1 is the effective focal length of the first lens, F2 is the effective focal length of the second lens, F12 is the combined focal length of the first and second lenses, F3 is the effective focal length of the third lens, F4 is the effective focal length of the fourth lens, F34 is the combined focal length of the third and fourth lenses, F5 is the effective focal length of the fifth lens, F6 is the effective focal length of the sixth lens, F7 is the effective focal length of the seventh lens, F8 is the effective focal length of the eighth lens, 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, θ is the radian value corresponding to the maximum field of view of the optical lens, Dmax is the maximum aperture among all lenses corresponding to the maximum field of view of the optical lens, Dmin is the minimum aperture among all lenses corresponding to 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, ENPD is the entrance pupil diameter of the optical lens, and D ST is the effective aperture of the aperture, R11 is the radius of curvature of the first side of the first lens, R12 is the radius of curvature of the second side of the first lens, R21 is the radius of curvature of the first side of the second lens, R22 is the radius of curvature of the second side of the second lens, R42 is the radius of curvature of the second side of the fourth lens, R82 is the radius of curvature of the second side of the eighth lens, d3 is the center thickness of the third lens, d2 is the center thickness of the second lens, d12 is the distance between the first and second lenses along the optical axis (e.g., air gap, not described further below), d78 is the distance between the seventh and eighth lenses along the optical axis, d34 is the distance between the third and fourth lenses along the optical axis, d45 is the distance between the fourth and fifth lenses along the optical axis, d56 is the distance between the fifth and sixth lenses along the optical axis, and d(L2~L8) is the sum of the distances between adjacent lenses along the optical axis from the second to the eighth lens. The meanings of the above will not be described further below.

[0071] In an exemplary embodiment, the optical lens can satisfy the condition: 4.3 ≤ TTL / F ≤ 6.5. By making the optical lens satisfy the above condition, the ratio of the total optical length to the total effective focal length of the optical lens can be reasonably controlled, which can effectively limit the length of the optical lens and facilitate the miniaturization and telephoto capabilities of the optical lens. Preferably, the optical lens can further satisfy: 4.75 ≤ TTL / F ≤ 6, which is more conducive to the miniaturization of the optical lens. More preferably, the optical lens can further satisfy: 5.0258 ≤ TTL / F ≤ 5.7252, which is even more conducive to the miniaturization of the optical lens.

[0072] In an exemplary embodiment, the optical lens can satisfy: 2rad -1 ≤TTL / H / θ≤3.5rad -1 By ensuring the optical lens satisfies the above conditions, and controlling the ratio of its total optical length, maximum image height, and maximum field of view, it is possible to achieve both large field of view and higher pixel count imaging applications while maintaining the miniaturization of the optical lens. Preferably, the optical lens can further satisfy: 2.4 rad. -1 ≤TTL / H / θ≤3rad -1 This is more conducive to achieving miniaturization and high pixel count in optical lenses. Even better, the optical lens can further meet the requirement of 2.5821 rad. -1 ≤TTL / H / θ≤2.9506rad -1 This makes it easier to achieve miniaturization and high pixel count in optical lenses.

[0073] In an exemplary embodiment, the optical lens can satisfy the condition: 2.65 ≤ TTL / Dmax ≤ 4. By making the optical lens satisfy the above condition, the ratio of the total optical length of the optical lens to the maximum lens aperture is controlled to be small, which makes the entire optical system more compact and miniaturized. Preferably, the optical lens can further satisfy: 2.9 ≤ TTL / Dmax ≤ 3.5, which is more conducive to miniaturization of the optical lens. More preferably, the optical lens can further satisfy: 3.0136 ≤ TTL / Dmax ≤ 3.4060, which is more conducive to miniaturization of the optical lens.

[0074] In an exemplary embodiment, the optical lens can satisfy: 0.5 rad. -1 ≤D / H / θ≤1.2rad -1 By satisfying the above conditions, the imaging surface of the optical lens can be made larger with a fixed front aperture, achieving higher pixel counts while maintaining a small front aperture. Preferably, the optical lens can further satisfy: 0.7 rad. -1 ≤D / H / θ≤1rad -1 This is more conducive to achieving miniaturization and high resolution of optical lenses. Even better, the optical lens can further meet the requirement of 0.7833 rad. -1 ≤D / H / θ≤0.9529rad -1 This makes it easier to achieve miniaturization and high pixel count in optical lenses.

[0075] In an exemplary embodiment, the optical lens can satisfy the condition: 0.5 ≤ F / H ≤ 1. By making the optical lens satisfy the above condition, the total effective focal length and maximum image height of the optical lens are controlled within a certain range, which is beneficial to improving the resolving power of the optical lens. Preferably, the optical lens can further satisfy: 0.65 ≤ F / H ≤ 0.8, which is more conducive to achieving high resolution of the optical lens. More preferably, the optical lens can further satisfy: 0.6834 ≤ F / H ≤ 0.7698, which is more conducive to achieving high resolution of the optical lens.

[0076] In an exemplary embodiment, the optical lens can satisfy: 0.08mm -1 ≤F / ENPD / D≤0.25mm -1 By satisfying the above conditions for the optical lens, a small aperture can be achieved, thereby enabling miniaturization of the optical lens, while still meeting the requirement for high light transmission. Preferably, the optical lens can further satisfy: 0.13mm. -1 ≤F / ENPD / D≤0.17mm -1 This is more conducive to achieving high light throughput and a small aperture in optical lenses. Even better, the optical lens can further meet the requirement of 0.1334mm. -1 ≤F / ENPD / D≤0.1612mm -1 This is more conducive to achieving high light throughput and small aperture in optical lenses.

[0077] In an exemplary embodiment, the optical lens can satisfy the condition: 0.75 ≤ DST / F ≤ 1.5. By satisfying the above condition, the ratio of the effective aperture of the aperture to the total effective focal length of the optical lens is made larger. This increases the amount of light entering the optical system while maintaining a fixed total effective focal length, thereby improving the light transmission of the optical lens. Preferably, the optical lens can further satisfy the condition: 0.95 ≤ DST / F ≤ 1.25, which is more conducive to achieving high light transmission. More preferably, the optical lens can further satisfy the condition: 1.0195 ≤ DST / F ≤ 1.2060, which is even more conducive to achieving high light transmission.

[0078] In an exemplary embodiment, the optical lens can satisfy the condition: -4 ≤ F1 / F ≤ -1.2. By making the optical lens satisfy the above condition, the effective focal length of the lenses in the optical lens is reasonably allocated, and the first lens has a negative optical power, which is beneficial for enabling light rays with a large field of view to enter the optical system, thereby realizing large field of view imaging applications. At the same time, it can also fix the trend of light rays at the edge of the field of view, thereby reducing the aperture of the first lens and realizing the miniaturization of the optical lens. Preferably, the optical lens can further satisfy the condition: -3.4 ≤ F1 / F ≤ -1.5, which is more conducive to realizing a small aperture at the front end of the optical lens. More preferably, the optical lens can further satisfy the condition: -2.9295 ≤ F1 / F ≤ -1.7836, which is more conducive to realizing a small aperture at the front end of the optical lens.

[0079] In an exemplary embodiment, the optical lens can satisfy: 1.2 ≤ |F2 / F| ≤ 20. By making the optical lens satisfy the above condition, the effective focal length of the second lens is controlled to be larger, which allows the light diverged by the first lens to have a smooth transition in the second lens. At the same time, by making the first side of the second lens concave, and / or by satisfying the condition -1.25 ≤ R12 / R21 ≤ -0.1 (or further -1 ≤ R12 / R21 ≤ -0.2, or even further -0.8174 ≤ R12 / R21 ≤ -0.3252) in addition to satisfying the above condition, the light collected and diverged by the first lens can be diverged again, allowing the light to reach a higher position. This not only enables a small front aperture but also helps to increase the aperture, allowing more light to pass through the optical system, thereby increasing the overall light transmission. Preferably, the optical lens can further satisfy: 1.4 ≤ |F2 / F| ≤ 14, which is more conducive to achieving a small front aperture and high light transmission of the optical lens. More preferably, the optical lens can further satisfy: 1.4135≤|F2 / F|≤12.3794, which is more conducive to achieving a small aperture and high light throughput at the front end of the optical lens.

[0080] In an exemplary embodiment, the optical lens can satisfy the condition: -6≤F12 / F≤-0.3. By making the optical lens satisfy the above condition and controlling the combined focal length of the first lens and the second lens, the first lens and the second lens together can make the light diverge, that is, the first lens collects the light and the second lens smoothly transitions and diffuses the light, which is beneficial for the optical lens to achieve large field of view imaging applications. Furthermore, in addition to satisfying the above conditions, the following conditions must also be met: 0.15≤R11 / TTL≤1.25 (or further, 0.3≤R11 / TTL≤1, or even further, 0.3500≤R11 / TTL≤0.8108) and -1.25≤R12 / R21≤-0.1 (or further, -1≤R12 / R21≤-0.2, or even further, -0.8174≤R12 / R21≤-0.3252). This allows the first and second lenses to primarily perform the function of collecting and diverging light, thereby achieving the function of a small front aperture and an enlarged aperture, allowing more light to enter the optical system and thus increasing the overall luminous flux. In an exemplary embodiment, the condition 1 ≤ d12 / d(L2~L8) ≤ 8.5 (or further, 1.1 ≤ d12 / d(L2~L8) ≤ 8, or even further, 1.1716 ≤ d12 / d(L2~L8) ≤ 7.7747) can be simultaneously satisfied. This allows the light to diverge overall at the front end of the optical system, effectively expanding the beam to achieve the required imaging height. Simultaneously, the light is gently converged to the imaging plane at the rear end of the optical system, which is beneficial for telephoto lenses and a compact structure. Preferably, the optical lens can further satisfy: -4.5 ≤ F12 / F ≤ -0.5, which is more conducive to achieving a small aperture and high luminous flux at the front end of the optical lens. More preferably, the optical lens can further satisfy: -3.9892 ≤ F12 / F ≤ -0.7715, which is even more conducive to achieving a small aperture and high luminous flux at the front end of the optical lens.

[0081] In an exemplary embodiment, the optical lens can satisfy: 1.2 ≤ |F3 / F|. By controlling the effective focal length of the third lens, the optical lens satisfies the above condition, enabling a smooth transition of light to the rear optical system, reducing aberrations, achieving high resolution, and simultaneously satisfying the condition 0.8 ≤ F34 / F ≤ 5 (or further 0.95 ≤ F34 / F ≤ 4, or even further 1.0792 ≤ F34 / F ≤ 3.2774). This allows the combination of the third and fourth lenses to converge and deflect light, thereby reducing the aperture at the rear end. It also corrects chromatic aberration in the negative focal length front group (e.g., a first lens with negative optical power and a second lens with positive optical power), balances the optical power of the central and peripheral light rays, and improves resolution. Preferably, the optical lens can further satisfy: 1.4 ≤ |F3 / F| ≤ 360, which is more conducive to achieving high resolution and a small aperture. Even better, the optical lens can further satisfy: 1.5428≤|F3 / F|≤308.2476, which is more conducive to achieving high resolution and small aperture of the optical lens.

[0082] In an exemplary embodiment, the optical lens can satisfy: 1.1 ≤ |F4 / F|. By controlling the effective focal length of the fourth lens, the optical lens satisfies the above condition, which can further smooth and compress light, thus facilitating the miniaturization of the optical lens and reducing aberrations. Simultaneously satisfying the condition 0.8 ≤ F34 / F ≤ 5 (or further 0.95 ≤ F34 / F ≤ 4, or even further 1.0792 ≤ F34 / F ≤ 3.2774), the combination of the third and fourth lenses can converge and deflect light, thereby reducing the aperture at the rear end. It can also correct chromatic aberration in the negative focal length front group (e.g., a first lens with negative optical power and a second lens with positive optical power), balance the optical power of the central and peripheral light rays, and improve resolution. Preferably, the optical lens can further satisfy: 1.25 ≤ |F4 / F| ≤ 550, which is more conducive to achieving high resolution and a small aperture. Even better, the optical lens can further satisfy: 1.3451≤|F4 / F|≤478.2828, which is more conducive to achieving high resolution and small aperture of the optical lens.

[0083] In an exemplary embodiment, the optical lens can satisfy: 1.2 ≤ |F5 / F|. By controlling the focal length of the fifth lens, the optical lens satisfies the above condition, which allows for the smooth transmission of light incident through the front optical system, thereby facilitating aberration correction. Simultaneously, in conjunction with the sixth and / or seventh lens, further adjustments to the light can correct the optical path difference between the central and peripheral rays, improving resolution. Preferably, the optical lens can further satisfy: 1.4 ≤ |F5 / F| ≤ 240, which is more conducive to achieving high resolution. More preferably, the optical lens can further satisfy: 1.5660 ≤ |F5 / F| ≤ 195.1263, which is even more conducive to achieving high resolution.

[0084] In an exemplary embodiment, the optical lens can satisfy: 1.2 ≤ |F8 / F| ≤ 30. By making the optical lens satisfy the above condition and making the eighth lens an aspherical lens, it is beneficial to correct the aberrations and field curvature of the entire optical lens, thereby improving the resolving power. At the same time, making the eighth lens a meniscus with a concave first side and a convex second side is beneficial to further achieving high resolution. Preferably, the optical lens can further satisfy: 1.3 ≤ |F8 / F| ≤ 25, which is more conducive to achieving high resolution of the optical lens. More preferably, the optical lens can further satisfy: 1.3984 ≤ |F8 / F| ≤ 16.7653, which is more conducive to achieving high resolution of the optical lens.

[0085] In an exemplary embodiment, the optical lens can satisfy the condition: 0.15 ≤ R11 / TTL ≤ 1.25. By making the optical lens satisfy the above condition, the ratio of the radius of curvature of the first lens to the total optical length is controlled, so that the first side of the first lens is set to a smaller radius of curvature. This allows for better collection of light rays from the object side at large angles with a smaller aperture, while improving ghost image reflection into the lens, thereby reducing ghost image energy and achieving weak ghosting. Preferably, the optical lens can further satisfy the condition: 0.3 ≤ R11 / TTL ≤ 1, which is more conducive to achieving a small aperture and weak ghosting in the optical lens. More preferably, the optical lens can further satisfy the condition: 0.3500 ≤ R11 / TTL ≤ 0.8108, which is even more conducive to achieving a small aperture and weak ghosting in the optical lens.

[0086] In an exemplary embodiment, the optical lens can satisfy the condition: -1.25 ≤ R12 / R21 ≤ -0.1. By satisfying the above condition and making the second side of the first lens and the first side of the second lens both concave, light can diverge twice when passing through these two sides, thus allowing the light to smoothly transition to the rear optical system and reducing sensitivity. Simultaneously, the optical lens, in addition to satisfying the above condition, also satisfies 0.08 ≤ F / ENPD / D ≤ 0.25 (or further 0.13 ≤ F / ENPD / D ≤ 0.17, or even further 0.1334 ≤ F / ENPD / D ≤ 0.1612), which allows the light to be directed upwards, which is beneficial for increasing the aperture and light transmission. Preferably, the optical lens can further satisfy: -1 ≤ R12 / R21 ≤ -0.2, which is more conducive to achieving high resolution and high light transmission of the optical lens. More preferably, the optical lens can further satisfy: -0.8174≤R12 / R21≤-0.3252, which is more conducive to achieving high resolution and high light transmission of the optical lens.

[0087] In an exemplary embodiment, the optical lens can satisfy the condition: 0.8 ≤ F34 / F ≤ 5. By ensuring the optical lens satisfies the above condition, the focal lengths of the third and fourth lenses are rationally configured, and at least one of the lenses has a positive focal length. Combined with special materials, chromatic aberration on the axis can be corrected, resolving power improved, and dual-pass capability achieved. Preferably, the optical lens can further satisfy: 0.95 ≤ F34 / F ≤ 4, which is more conducive to achieving high resolution and dual-pass capability. More preferably, the optical lens can further satisfy: 1.0792 ≤ F34 / F ≤ 3.2774, which is even more conducive to achieving high resolution and dual-pass capability.

[0088] In an exemplary embodiment, the optical lens can satisfy: -10 ≤ R42 / F ≤ -0.8. By satisfying the above condition, the radius of curvature of the second side of the fourth lens is negative and it is a convex surface, which can converge light. In this embodiment, in addition to satisfying the above condition, simultaneously satisfying 1.1 ≤ |F4 / F| (or further 1.25 ≤ |F4 / F| ≤ 550, or even further 1.3451 ≤ |F4 / F| ≤ 478.2828) can correct axial chromatic aberration, improve resolution, and achieve dual-pass capability. Preferably, the optical lens can further satisfy: -8.5 ≤ R42 / F ≤ -1, which is more conducive to achieving high resolution and dual-pass capability. More preferably, the optical lens can further satisfy: -7.1775 ≤ R42 / F ≤ -1.0471, which is more conducive to achieving high resolution and dual-pass capability.

[0089] In an exemplary embodiment, the optical lens can satisfy: 0.008 ≤ (d34 + d45) / TTL ≤ 0.032. By satisfying the above conditional expression for the optical lens, and reasonably controlling the spacing distance (e.g., air gap) along the optical axis between the third and fourth lenses, and between the fourth and fifth lenses, the entire optical system structure can be made compact, achieving a short total optical length, which is beneficial for miniaturization. It also reduces the optical path difference between the central and peripheral rays. In this embodiment, in addition to satisfying the above conditional expression, simultaneously satisfying 1.2 ≤ |F5 / F| (or further 1.4 ≤ |F5 / F| ≤ 240, or even further 1.5660 ≤ |F5 / F| ≤ 195.1263) is beneficial for improving resolution. Preferably, the optical lens can further satisfy: 0.01 ≤ (d34 + d45) / TTL ≤ 0.03, which is even more beneficial for achieving miniaturization and high resolution of the optical lens. More preferably, the optical lens can further satisfy: 0.0054≤(d34+d45) / TTL≤0.0232, which is more conducive to the miniaturization and high resolution of the optical lens.

[0090] In an exemplary embodiment, the optical lens can satisfy the condition: 0.75 ≤ R82 / F ≤ 3.5. By making the optical lens satisfy the above condition and making the second side of the lens closest to the imaging plane (e.g., the eighth lens) concave, aberrations in the central and peripheral fields of view can be balanced, improving resolving power. Furthermore, based on achieving overall miniaturization of the optical lens, the seventh lens, having negative optical power, can diverge light, allowing it to reach a higher imaging position, thus enabling large-chip imaging. Preferably, the optical lens can further satisfy: 0.95 ≤ R82 / F ≤ 3.1, which is more conducive to achieving high resolution. More preferably, the optical lens can further satisfy: 1.1136 ≤ R82 / F ≤ 3.0158, which is even more conducive to achieving high resolution.

[0091] In an exemplary embodiment, the optical lens can satisfy the condition: 0.001 ≤ d78 / TTL ≤ 0.0085. By satisfying the above condition, the spacing between the seventh and eighth lenses along the optical axis can be reasonably controlled, making the entire optical lens structure compact and achieving a short total optical length, which is beneficial for miniaturization. Simultaneously, the eighth lens can be made to have a convex first side and a concave second side, with an overall crescent shape, which is beneficial for controlling the incident light plane to have a suitable CRA, thereby improving image quality. Preferably, the optical lens can further satisfy: 0.002 ≤ d78 / TTL ≤ 0.0085, which is more conducive to achieving miniaturization and high resolution of the optical lens. More preferably, the optical lens can further satisfy: 0.0027 ≤ d78 / TTL ≤ 0.0079, which is even more conducive to achieving miniaturization and high resolution of the optical lens.

[0092] In an exemplary embodiment, the optical lens can satisfy: 1.3 ≤ Dmax / Dmin ≤ 1.75. By making the optical lens satisfy the above condition, controlling the maximum and minimum apertures of all lenses in the optical lens, and rationally configuring the optical power of each lens, the overall light path can be controlled to be smooth, which is beneficial to improving the resolution. In this embodiment, in addition to satisfying the above condition, simultaneously satisfying 2.65 ≤ TTL / Dmax ≤ 4 (or further 2.9 ≤ TTL / Dmax ≤ 3.5, or even further 3.0136 ≤ TTL / Dmax ≤ 3.4060), the overall aperture of the optical lens can be made small. Preferably, the optical lens can further satisfy: 1.35 ≤ Dmax / Dmin ≤ 1.72, which is more conducive to achieving a small aperture and high resolution. More preferably, the optical lens can further satisfy: 1.4387 ≤ Dmax / Dmin ≤ 1.7094, which is more conducive to achieving a small aperture and high resolution.

[0093] In an exemplary embodiment, the optical lens can satisfy the condition: 0.04 ≤ d³ / TTL ≤ 0.2. By satisfying the above condition, the ratio of the center thickness of the third lens to the total optical length is controlled, enabling the light to travel almost unbiased when passing through the third lens while maintaining the miniaturization of the optical lens, thereby reducing sensitivity. Preferably, the optical lens can further satisfy the condition: 0.05 ≤ d³ / TTL ≤ 0.185, which is more conducive to achieving miniaturization and low sensitivity of the optical lens. More preferably, the optical lens can further satisfy the condition: 0.0540 ≤ d³ / TTL ≤ 0.1618, which is even more conducive to achieving miniaturization and low sensitivity of the optical lens.

[0094] In an exemplary embodiment, the optical lens can satisfy the condition: 0.05 ≤ |R21| / (|R22|+d2) ≤ 0.85. By satisfying the above condition, the curvature radius and center thickness of the first and second sides of the second lens can be controlled, allowing the second lens to have a special shape. This ensures that the angles at which light rays from each field of view enter and exit the second lens are almost identical, thereby reducing aberrations and allowing the second lens to smoothly expand the beam, thus achieving high resolution while matching large field-of-view imaging. Preferably, the optical lens can further satisfy the condition: 0.07 ≤ |R21| / (|R22|+d2) ≤ 0.8, which is more conducive to achieving high resolution. More preferably, the optical lens can further satisfy the condition: 0.0821 ≤ |R21| / (|R22|+d2) ≤ 0.7832, which is even more conducive to achieving high resolution.

[0095] In an exemplary embodiment, the optical lens can satisfy: 1 ​​≤ d12 / d(L2~L8) ≤ 8.5. By making the optical lens satisfy the above condition, the spacing between the first and second lenses along the optical axis is controlled to be large, while the sum of the spacing between adjacent lenses along the optical axis from the second to the eighth lens (i.e., the spacing between the second and third lenses, the third and fourth lenses, the fourth and fifth lenses, the fifth and sixth lenses, the sixth and seventh lenses, and the seventh and eighth lenses) is small. This allows the light to be sufficiently expanded at the front end of the optical system and to converge smoothly at the rear end, thereby achieving both high resolution and telephoto capability. In this embodiment, while satisfying the above condition, the optical lens also satisfies -6 ≤ F12 / F ≤ -0.3 (or further -4.5 ≤ F12 / F ≤ -0.5, or even further -3.9892 ≤ F12 / F ≤ -0.7715), which is beneficial for controlling the light trajectory in the optical lens, making the light levels at the front and rear ends of the optical system very close, and achieving a small aperture. Preferably, the optical lens can further satisfy: 1.1≤d12 / d(L2~L8)≤8, which is more conducive to achieving high resolution, long focal length, and small aperture of the optical lens. More preferably, the optical lens can further satisfy: 1.1716≤d12 / d(L2~L8)≤7.7747, which is more conducive to achieving high resolution, long focal length, and small aperture of the optical lens.

[0096] In an exemplary embodiment, the optical lens can satisfy the condition: 1.45 ≤ R11 / F ≤ 5. By making the optical lens satisfy the above condition, the radius of curvature of the first side of the first lens is controlled to be small, that is, the shape of the first side of the first lens is relatively curved, which is beneficial for collecting light rays with a large field of view at a small aperture, thereby effectively reducing ghost image reflection energy and achieving weak ghosting. Preferably, the optical lens can further satisfy: 1.6 ≤ R11 / F ≤ 4.8, which is more conducive to achieving a large field of view and weak ghosting of the optical lens. More preferably, the optical lens can further satisfy: 1.8550 ≤ R11 / F ≤ 4.6315, which is more conducive to achieving a large field of view and weak ghosting of the optical lens.

[0097] In an exemplary embodiment, the optical lens can satisfy the condition: 0.65 ≤ (H / 2) / (F*tan(θ / 2)) ≤ 1. By making the optical lens satisfy the above condition, the total effective focal length, maximum field of view, and maximum image height of the optical lens are controlled, making the theoretical image height and the actual image height closer, which is beneficial to improving the imaging capability of the entire system and achieving high resolution. Preferably, the optical lens can further satisfy the condition: 0.74 ≤ (H / 2) / (F*tan(θ / 2)) ≤ 0.9, which is more conducive to achieving high resolution of the optical lens. More preferably, the optical lens can further satisfy the condition: 0.7740 ≤ (H / 2) / (F*tan(θ / 2)) ≤ 0.8750, which is more conducive to achieving high resolution of the optical lens.

[0098] In an exemplary embodiment, the optical lens can satisfy the condition: 0.7 ≤ F6 / F ≤ 2. By making the optical lens satisfy the above condition and controlling the sixth lens to have positive optical power and a small effective focal length, light can be effectively compressed, and the height of light passing through the optical system before and after the sixth lens can be smoothed, thereby reducing sensitivity, balancing the aperture of all lenses in the optical lens, and also facilitating aberration correction and achieving high resolution. Preferably, the optical lens can further satisfy the condition: 0.85 ≤ F6 / F ≤ 1.85, which is more conducive to achieving high resolution and a small aperture. More preferably, the optical lens can further satisfy the condition: 0.9861 ≤ F6 / F ≤ 1.7978, which is more conducive to achieving high resolution and a small aperture.

[0099] In an exemplary embodiment, the optical lens can satisfy the condition: 0.01 ≤ F*(1 / F3+1 / F4+1 / F5) ≤ 1.8. By satisfying the above condition, the effective focal lengths of the third, fourth, and fifth lenses are controlled, so that light is compressed between the third and fifth lenses after passing through the aperture stop. This prevents excessive light divergence, thereby reducing light energy loss and improving image quality. It also helps to make the aperture diameters of the lenses in the entire optical system similar, achieving overall aperture miniaturization and a smaller total optical length. Preferably, the optical lens can further satisfy: 0.02 ≤ F*(1 / F3+1 / F4+1 / F5) ≤ 1.5, which is more conducive to achieving high resolution and miniaturization of the optical lens. More preferably, the optical lens can further satisfy: 0.0341 ≤ F*(1 / F3+1 / F4+1 / F5) ≤ 1.1100, which is even more conducive to achieving high resolution and miniaturization of the optical lens.

[0100] In an exemplary embodiment, the optical lens can satisfy: d56 / TTL≤0.02. By making the optical lens satisfy the above condition, the spacing between the fifth and sixth lenses along the optical axis is kept small, which is beneficial for miniaturization. In an exemplary embodiment, based on satisfying the above condition, the focal length distribution of the preceding and following lenses of the fifth and sixth lenses is also controlled to satisfy 0.008≤(d34+d45) / TTL≤0.032 (or further 0.01≤(d34+d45) / TTL≤0.03, or even further 0.0054≤(d34+d45) / TTL≤0.0232), which is beneficial for the light rays to be highly similar between the fourth and eighth lenses, making the light transmission apertures of each lens similar, thereby contributing to the overall small aperture and low sensitivity of the optical lens. Preferably, the optical lens can further satisfy: d56 / TTL≤0.0125, which is even more beneficial for miniaturization and low sensitivity of the optical lens. Even better, the optical lens can further satisfy: d56 / TTL≤0.0088, which is more conducive to the miniaturization and low sensitivity of the optical lens.

[0101] In an exemplary embodiment, the optical lens can satisfy the condition: d56 / F ≤ 0.1. By making the optical lens satisfy the above condition, the spacing between the fifth and sixth lenses along the optical axis is controlled to be small, which is beneficial for the slow path of light between the fifth and sixth lenses, thus facilitating telephoto lenses. It also allows sufficient space for aberration correction, which is beneficial for achieving high resolution. Preferably, the optical lens can further satisfy: d56 / F ≤ 0.08, which is even more conducive to achieving high resolution. More preferably, the optical lens can further satisfy: d56 / F ≤ 0.0492, which is even more conducive to achieving high resolution.

[0102] In an exemplary embodiment, the optical lens can satisfy the condition: (d56*F6) / (TTL*F)≤0.02. By making the optical lens satisfy the above condition, the spacing between the fifth and sixth lenses along the optical axis is controlled to be small, and the sixth lens has positive optical power and a small effective focal length, which is beneficial for the effective convergence of light between the fifth and sixth lenses, thereby reducing the total optical length. Furthermore, it also leaves more space for a smoother transition of light at the rear, which is beneficial for the rear optical system to correct aberrations and improve resolution. Preferably, the optical lens can further satisfy: 0.85≤(d56*F6) / (TTL*F)≤0.0175, which is more conducive to achieving miniaturization and high resolution of the optical lens. More preferably, the optical lens can further satisfy: (d56*F6) / (TTL*F)≤0.0107, which is more conducive to achieving miniaturization and high resolution of the optical lens.

[0103] In an exemplary embodiment, the optical lens can satisfy the condition: -5 ≤ F7 / F ≤ -0.4. By making the optical lens satisfy the above condition and controlling the seventh lens to have a negative optical power, the light can be moderately diverged, making the overall light path more stable. This is beneficial for the light to smoothly enter the eighth lens and transition to the image plane, thereby improving the resolving power of the optical lens. Preferably, the optical lens can further satisfy the condition: -4.5 ≤ F7 / F ≤ -0.5, which is more conducive to achieving high resolution of the optical lens. More preferably, the optical lens can further satisfy the condition: -4.0191 ≤ F7 / F ≤ -0.6642, which is even more conducive to achieving high resolution of the optical lens.

[0104] In an exemplary embodiment, the optical lens can satisfy the condition: -3 ≤ F6 / F7 ≤ -0.15. By making the optical lens satisfy the above condition, the sixth and seventh lenses, these two adjacent lenses, have one positive and one negative optical power respectively, and their effective focal lengths are close. This is beneficial for correcting aberrations at the rear end of the optical system, thereby improving the resolving power of the optical lens. Combined with reasonable focal length values ​​for the third and fourth lenses, the light paths can be made similar, which is beneficial for the apertures of the lenses in the optical system to be similar, and for the compactness of the structure. Preferably, the optical lens can further satisfy: -2.5 ≤ F6 / F7 ≤ -0.2, which is more conducive to achieving high resolution. More preferably, the optical lens can further satisfy: -1.9559 ≤ F6 / F7 ≤ -0.2587, which is even more conducive to achieving high resolution.

[0105] In an exemplary embodiment, the optical lens of this application may, as needed, include a filter and / or protective glass disposed between the eighth lens and the imaging surface. The filter can filter light of different wavelengths, and the protective glass can prevent damage to components (e.g., chips) on the second side of the optical lens.

[0106] In an exemplary embodiment, the first to eighth lenses can be glass lenses or plastic lenses. This application does not specifically limit the exact number of glass lenses and plastic lenses. Optical lenses made of glass can suppress the shift of the back focus of the optical lens due to temperature changes, thereby improving system stability. At the same time, using glass can avoid problems such as lens blurring caused by high and low temperature changes in the operating environment, and problems affecting the normal use of the lens. Specifically, when temperature performance and resolution quality are of primary concern, the first to eighth lenses can all be aspherical glass lenses. In applications with lower temperature stability requirements, the first to eighth lenses in the optical lens can also all be made of plastic. Using plastic to make optical lenses can effectively reduce manufacturing costs. Of course, the first to ninth lenses in the optical lens can also be made of a combination of plastic and glass.

[0107] In an exemplary embodiment, at least one of the second and first sides of the third lens and the first and second sides of the eighth lens may have inversion, which is beneficial for better correcting the aberrations of rays emitted from different fields of view.

[0108] The optical lens according to the above embodiments of this application, through the reasonable setting of parameters such as lens shape and optical power, enables the optical lens to have at least one beneficial effect such as miniaturization, high pixel count, high resolution, small aperture, long focal length, high light throughput, weak ghosting, dual-pass, and large field of view.

[0109] However, those skilled in the art will understand that the number of lenses constituting the lens can be varied to obtain the various results and advantages described in this specification without departing from the technical solutions claimed in this application. For example, although eight lenses are described as an example in the embodiments, the optical lens is not limited to including eight lenses. If desired, the optical lens may also include other numbers of lenses. Specific embodiments of the optical lens applicable to the above embodiments are further described below with reference to the accompanying drawings.

[0110] Example 1

[0111] The following is for reference Figure 1 An optical lens according to Embodiment 1 of this application is described. Figure 1 A schematic diagram of the structure of an optical lens according to Embodiment 1 of this application is shown.

[0112] like Figure 1 As shown, the optical lens includes, in sequence from the first side to the second side, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8.

[0113] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave.

[0114] The second lens L2 has negative optical power, with its first side surface S3 being concave and its second side surface S4 being convex.

[0115] The third lens L3 has positive optical power, and its first side surface S5 is convex, and its second side surface S6 is convex.

[0116] The fourth lens L4 has positive optical power, and its first side surface S7 is convex, and its second side surface S8 is convex.

[0117] The fifth lens L5 has negative optical power, with its first side surface S9 being convex and its second side surface S10 being concave.

[0118] The sixth lens L6 has positive optical power, and its first side surface S11 is convex, and its second side surface S12 is convex.

[0119] The seventh lens L7 has negative optical power, and its first side surface S12 is concave and its second side surface S13 is concave.

[0120] The eighth lens L8 has positive optical power, with its first side surface S14 being convex and its second side surface S15 being concave.

[0121] The sixth lens L6 and the seventh lens L7 are cemented together to form a cemented part, and the second side surface S6 of the third lens L3 has a recurve shape.

[0122] The optical lens may also include an aperture stop STO, which may be positioned between the second lens L2 and the third lens L3.

[0123] Optionally, the optical lens may also include a filter having a first side surface S16 and a second side surface S17, and a protective glass having a first side surface S18 and a second side surface S19.

[0124] The optical lens provided in this application can be used, for example, as a vehicle-mounted lens or a LiDAR receiver lens, in which case... Figure 1 In the image plane IMA, light from the object passes sequentially through surfaces S1 to S19 and is finally imaged onto the image plane IMA located on the second side. An image sensing chip is disposed at the image plane. It should be understood that the optical lens provided in this application can also be used as, for example, a projection lens or a lidar transmitter lens. Figure 1 In the middle IMA, light from the light source surface passes through each surface S19 to S1 in sequence and is finally projected onto the first side, forming an image or illuminating area on the first side.

[0125] Table 1 shows the radius of curvature R, thickness / distance, refractive index Nd, and Abbe number Vd of each lens in the optical lens of Example 1.

[0126] Table 1

[0127]

[0128]

[0129] In this embodiment, the first side surface S5 and the second side surface S6 of the third lens L3 and the first side surface S14 and the second side surface S15 of the eighth lens L8 can be aspherical surfaces. The surface shape of each aspherical lens can be defined using, but is not limited to, the following aspherical formula:

[0130]

[0131] 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. Tables 2-1 and 2-2 below give the conic coefficient k and higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for the aspherical mirrors S5, S6, S14, and S15 in Example 1.

[0132] Table 2-1

[0133] Face number k A4 A6 A8 A10 A12 S5 6.61E+00 -5.08E-05 -3.01E-05 9.16E-06 -2.08E-06 2.75E-07 S6 -9.15E+00 6.65E-04 2.37E-05 -3.65E-06 5.62E-07 -5.38E-08 S14 -7.25E+00 1.37E-03 -5.74E-05 2.41E-06 -9.64E-08 2.08E-09 S15 6.35E+00 4.81E-04 -3.91E-05 6.68E-06 -2.59E-07 -1.05E-07

[0134] Table 2-2

[0135] Face number A14 A16 A18 A20 S5 -2.27E-08 1.13E-09 -3.10E-11 3.62E-13 S6 3.19E-09 -1.14E-10 2.25E-12 -1.84E-14 S14 -2.46E-11 1.64E-13 -5.78E-16 8.46E-19 S15 1.87E-08 -1.39E-09 5.06E-11 -7.29E-13

[0136] Example 2

[0137] The following is for reference Figure 2 An optical lens according to Embodiment 2 of this application is described. In this embodiment, for the sake of brevity, descriptions similar to those in Embodiment 1 are omitted. Figure 2 A schematic diagram of the structure of an optical lens according to Embodiment 2 of this application is shown.

[0138] like Figure 2 As shown, the optical lens, along the optical axis from the first side to the second side, includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8. The optical power of each lens in Embodiment 2 is the same as that in Embodiment 1. Specifically, the sixth lens L6 and the seventh lens L7 are cemented together to form a cemented joint, and the second side surface S6 of the third lens L3 has a recurve shape.

[0139] Table 3 shows the parameters of each lens in the optical lens of Embodiment 2. The surface shape of each lens can be obtained from the table below and will not be repeated. Table 4 shows the parameters of the aspherical lenses that can be used in the embodiments, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0140] Table 3

[0141]

[0142]

[0143] Table 4-1

[0144] Face number k A4 A6 A8 A10 A12 S5 6.57E+00 -7.42E-05 -3.54E-05 1.70E-05 -4.55E-06 7.17E-07 S6 -6.27E+01 5.55E-04 5.58E-05 -1.28E-05 2.51E-06 -3.03E-07 S14 -4.78E+00 7.42E-04 -3.74E-05 7.21E-07 2.48E-07 -5.70E-08 S15 2.97E+00 5.49E-04 -7.37E-05 1.05E-05 -8.41E-07 -4.51E-08

[0145] Table 4-2

[0146] Face number A14 A16 A18 A20 S5 -6.98E-08 4.09E-09 -1.33E-10 1.82E-12 S6 2.26E-08 -1.02E-09 2.54E-11 -2.66E-13 S14 5.66E-09 -3.09E-10 8.97E-12 -1.08E-13 S15 1.51E-08 -1.32E-09 5.31E-11 -8.35E-13

[0147] Example 3

[0148] The following is for reference Figure 3 An optical lens according to Embodiment 3 of this application is described. In this embodiment, for the sake of brevity, descriptions similar to those in Embodiment 1 are omitted. Figure 3 A schematic diagram of the structure of an optical lens according to Embodiment 3 of this application is shown.

[0149] like Figure 3 As shown, the optical lens, along the optical axis from the first side to the second side, includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8. The difference between the optical lens of Embodiment 3 and Embodiment 1 lies only in that the second lens L2 in Embodiment 3 has a positive optical power, and the third lens L3 has a negative optical power. The sixth lens L6 and the seventh lens L7 are cemented together to form a cemented joint, and the second side surface S6 of the third lens L3 has a recurve shape.

[0150] Table 5 shows the parameters of each lens in the optical lens of Embodiment 3. The surface shape of each lens can be obtained from the table below and will not be repeated. Table 6 shows the parameters of the aspherical lenses that can be used in the embodiments, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0151] Table 5

[0152] Face number Radius of curvature R (mm) Thickness / Distance (mm) Refractive index Nd Abbe number Vd S1 16.5684 1.2340 1.52 64.20 S2 4.7345 3.9609 S3 -12.6636 4.4323 1.80 42.25 S4 -11.7375 1.8241 STO infinity 0.4816 S5 -27.1559 2.0337 1.81 40.99 S6 -48.2563 0.6447 S7 18.3636 5.0148 1.50 81.61 S8 -7.9507 0.1000 S9 23.9357 2.7976 1.72 37.99 S10 9.1183 0.2304 S11 7.5189 5.0000 1.59 68.62 S12 -8.7367 1.3990 1.73 32.23 S13 13.9191 0.1000 S14 7.1622 3.5114 1.69 53.13 S15 10.9702 1.4498 S16 infinity 0.5000 1.52 64.20 S17 infinity 1.7338 S18 infinity 0.5000 1.52 64.20 S19 infinity 0.0512 IMA / /

[0153] Table 6-1

[0154] Face number k A4 A6 A8 A10 A12 S5 7.24E+00 -1.34E-04 -1.38E-04 6.59E-05 -1.77E-05 2.97E-06 S6 6.53E+01 -2.90E-05 7.81E-05 -2.67E-05 6.20E-06 -8.66E-07 S14 -4.44E+00 1.02E-03 -8.82E-05 1.39E-05 -2.06E-06 2.01E-07 S15 3.01E+00 3.62E-04 -1.73E-04 4.20E-05 -6.07E-06 5.02E-07

[0155] Table 6-2

[0156] Face number A14 A16 A18 A20 S5 -3.17E-07 2.08E-08 -7.70E-10 1.22E-11 S6 7.43E-08 -3.82E-09 1.08E-10 -1.28E-12 S14 -1.27E-08 4.96E-10 -1.08E-11 1.00E-13 S15 -2.20E-08 2.92E-10 1.15E-11 -3.38E-13

[0157] Example 4

[0158] The following is for reference Figure 4 An optical lens according to Embodiment 4 of this application is described. In this embodiment, for the sake of brevity, descriptions similar to those in Embodiment 1 are omitted. Figure 4 A schematic diagram of the structure of an optical lens according to Embodiment 4 of this application is shown.

[0159] like Figure 4As shown, the optical lens, along the optical axis from the first side to the second side, includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8. The optical power of each lens in Embodiment 4 is the same as that in Embodiment 1. The sixth lens L6 and the seventh lens L7 are cemented together to form a bonded component.

[0160] Table 7 shows the parameters of each lens in the optical lens of Embodiment 4. The surface shape of each lens can be obtained from the table below and will not be repeated. Table 8 shows the parameters of the aspherical lenses that can be used in the embodiments, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0161] Table 7 Table 8-1

[0162] Face number Radius of curvature R (mm) Thickness / Distance (mm) Refractive index Nd Abbe number Vd S1 13.9951 1.5000 1.52 64.20 S2 5.0784 3.3263 S3 -7.3099 4.5645 1.80 42.25 S4 -27.6650 0.1000 STO infinity 0.1000 S5 14.3747 3.7483 1.81 40.99 S6 100.0000 0.4001 S7 14.4539 5.5000 1.50 81.61 S8 -8.0562 0.1000 S9 31.5476 2.0156 1.72 37.99 S10 9.0241 0.1104 S11 7.1772 4.6383 1.59 68.62 S12 -10.8329 1.3294 1.73 32.23 S13 16.1884 0.1000 S14 8.0070 4.0000 1.69 53.13 S15 12.2304 1.5427 S16 infinity 0.5000 1.52 64.20 S17 infinity 1.7338 S18 infinity 0.5000 1.52 64.20 S19 infinity 0.0518 IMA / /

[0163] Face number k A4 A6 A8 A10 A12 S5 6.92E+00 9.72E-05 -5.29E-05 2.08E-05 -5.46E-06 8.59E-07 S6 9.90E+01 7.31E-04 2.14E-05 -3.36E-06 5.32E-07 -5.34E-08 S14 -4.15E+00 7.79E-04 -5.99E-07 -6.54E-06 1.14E-06 -1.27E-07 S15 4.30E+00 7.62E-04 -8.56E-05 2.11E-05 -3.61E-06 3.45E-07

[0164] Table 8-2

[0165] Face number A14 A16 A18 A20 S5 -8.38E-08 4.94E-09 -1.61E-10 2.23E-12 S6 3.29E-09 -1.22E-10 2.49E-12 -2.11E-14 S14 8.96E-09 -3.95E-10 9.86E-12 -1.06E-13 S15 -1.79E-08 3.60E-10 5.41E-12 -2.51E-13

[0166] Example 5

[0167] The following is for reference Figure 5 An optical lens according to Embodiment 5 of this application is described. In this embodiment, for the sake of brevity, descriptions similar to those in Embodiment 1 are omitted. Figure 5 A schematic diagram of the structure of an optical lens according to Embodiment 5 of this application is shown.

[0168] like Figure 5 As shown, the optical lens, along the optical axis from the first side to the second side, includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8. The difference between the positive and negative optical powers of the lenses in Embodiment 5 and Embodiment 1 is only that the third lens L3 in Embodiment 5 has a negative optical power. The sixth lens L6 and the seventh lens L7 are cemented together to form a bonded component.

[0169] Table 9 shows the parameters of each lens in the optical lens of Embodiment 5. The surface shape of each lens can be obtained from the table below and will not be repeated. Table 10 shows the parameters of the aspherical lenses that can be used in the embodiments, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0170] Table 9

[0171] Face number Radius of curvature R (mm) Thickness / Distance (mm) Refractive index Nd Abbe number Vd S1 12.6290 1.5000 1.52 64.20 S2 4.6503 4.0601 S3 -6.7480 4.3182 1.80 42.25 S4 -9.6604 0.1533 STO infinity 0.1000 S5 48.8044 2.0202 1.81 40.99 S6 46.5333 0.4876 S7 16.0430 5.5000 1.50 81.61 S8 -7.0585 0.1000 S9 43.0591 3.5106 1.72 37.99 S10 9.3571 0.1480 S11 7.3130 5.0000 1.59 68.62 S12 -10.6123 1.0000 1.73 32.23 S13 11.2727 0.1000 S14 7.1149 4.0000 1.69 53.13 S15 17.4861 1.2995 S16 infinity 0.5000 1.52 64.20 S17 infinity 1.7338 S18 infinity 0.5000 1.52 64.20 S19 infinity 0.0501 IMA / /

[0172] Table 10-1

[0173] Face number k A4 A6 A8 A10 A12 S5 1.52E+01 2.84E-04 -9.82E-08 -9.76E-07 1.13E-07 -2.07E-08 S6 6.13E+01 5.56E-04 6.54E-05 -1.99E-05 3.79E-06 -4.49E-07 S14 -3.22E+00 7.95E-04 -1.53E-05 -1.19E-06 6.48E-07 -1.19E-07 S15 7.26E+00 7.92E-04 -1.40E-04 4.26E-05 -7.27E-06 7.74E-07

[0174] Table 10-2

[0175]

[0176]

[0177] Example 6

[0178] The following is for reference Figure 6 An optical lens according to Embodiment 6 of this application is described. In this embodiment, for the sake of brevity, descriptions similar to those in Embodiment 1 are omitted. Figure 6 A schematic diagram of the structure of an optical lens according to Embodiment 6 of this application is shown.

[0179] like Figure 6 As shown, the optical lens, along the optical axis from the first side to the second side, includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8. The optical power of each lens in Embodiment 6 is the same as that in Embodiment 1. The sixth lens L6 and the seventh lens L7 are cemented together to form a bonded component, and the second side surface S6 of the third lens L3 has a recurve shape.

[0180] Table 11 shows the parameters of each lens in the optical lens of Embodiment 6. The surface shape of each lens can be obtained from the table below and will not be repeated. Table 12 shows the parameters of the aspherical lenses that can be used in the embodiments, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0181] Table 11

[0182] Face number Radius of curvature R (mm) Thickness / Distance (mm) Refractive index Nd Abbe number Vd S1 13.6816 1.4374 1.52 64.20 S2 5.1542 4.7022 S3 -7.5476 5.0000 1.80 42.25 S4 -44.8568 0.1000 STO infinity 0.1000 S5 13.6256 2.9789 1.81 40.99 S6 -28.4286 0.7555 S7 -100.0000 4.0531 1.50 81.61 S8 -7.5943 0.1000 S9 56.0097 1.4131 1.72 37.99 S10 9.7926 0.1000 S11 7.0609 3.7303 1.59 68.62 S12 -10.8390 3.2697 1.73 32.23 S13 11.2998 0.1000 S14 7.1142 4.0000 1.69 53.13 S15 17.2186 2.2452 S16 infinity 0.5000 1.52 64.20 S17 infinity 1.7338 S18 infinity 0.5000 1.52 64.20 S19 infinity 0.0519 IMA / /

[0183] Table 12-1

[0184]

[0185]

[0186] Table 12-2

[0187] Face number A14 A16 A18 A20 S5 -2.49E-08 1.26E-09 -3.52E-11 4.16E-13 S6 1.54E-08 -5.70E-10 1.08E-11 -7.49E-14 S14 -4.36E-09 1.09E-10 -1.21E-12 -1.19E-16 S15 -5.98E-11 3.86E-12 2.83E-13 -1.45E-14

[0188] Example 7

[0189] The following is for reference Figure 7 An optical lens according to Embodiment 7 of this application is described. In this embodiment, for the sake of brevity, descriptions similar to those in Embodiment 1 are omitted. Figure 7A schematic diagram of the structure of an optical lens according to Embodiment 7 of this application is shown.

[0190] like Figure 7 As shown, the optical lens, along the optical axis from the first side to the second side, includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8. The optical power of each lens in Embodiment 7 is the same as that in Embodiment 1. The sixth lens L6 and the seventh lens L7 are cemented together to form a bonded component, and the second side surface S6 of the third lens L3 has a recurve shape.

[0191] Table 13 shows the parameters of each lens in the optical lens of Embodiment 7. The surface shape of each lens can be obtained from the following table and will not be repeated. Table 14 shows the parameters of the aspherical lenses that can be used in the embodiments, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0192] Table 13

[0193]

[0194]

[0195] Table 14-1

[0196] Face number k A4 A6 A8 A10 A12 S5 7.02E+00 -8.99E-06 -6.10E-06 1.39E-06 -3.64E-07 4.52E-08 S6 4.55E+01 6.59E-04 3.18E-05 -5.41E-06 8.65E-07 -8.47E-08 S14 -5.18E+00 1.01E-03 -4.57E-05 2.36E-06 -2.01E-07 1.17E-08 S15 6.94E+00 5.31E-04 -2.00E-05 3.40E-07 -1.97E-08 -3.10E-09

[0197] Table 14-2

[0198] Face number A14 A16 A18 A20 S5 -3.49E-09 1.59E-10 -3.97E-12 4.05E-14 S6 5.15E-09 -1.91E-10 3.92E-12 -3.41E-14 S14 -4.67E-10 1.10E-11 -1.07E-13 -2.16E-16 S15 -8.77E-11 7.88E-12 7.68E-13 -3.81E-14

[0199] Example 8

[0200] The following is for reference Figure 8 An optical lens according to Embodiment 8 of this application is described. In this embodiment, for the sake of brevity, descriptions similar to those in Embodiment 1 are omitted. Figure 8 A schematic diagram of the structure of an optical lens according to Embodiment 8 of this application is shown.

[0201] like Figure 8 As shown, the optical lens, along the optical axis from the first side to the second side, includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8. The difference between the positive and negative optical powers of the lenses in Embodiment 8 and Embodiment 1 is only that the fifth lens L5 in Embodiment 8 has a positive optical power. The sixth lens L6 and the seventh lens L7 are cemented together to form a bonded component.

[0202] Table 15 shows the parameters of each lens in the optical lens of Embodiment 8. The surface shape of each lens can be obtained from the following table and will not be repeated. Table 16 shows the parameters of the aspherical lenses that can be used in the embodiments, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0203] Table 15

[0204]

[0205]

[0206] Table 16-1

[0207] Face number k A4 A6 A8 A10 A12 S5 6.70E+00 9.89E-05 -1.87E-06 -4.83E-07 -3.66E-08 -2.56E-09 S6 9.90E+01 1.02E-03 3.71E-05 -3.15E-06 3.71E-07 -2.54E-08 S14 -4.02E+00 1.35E-03 -1.49E-05 -1.21E-07 3.05E-08 5.70E-09 S15 4.49E+00 6.43E-04 -1.79E-05 3.43E-06 8.27E-08 -1.83E-08

[0208] Table 16-2

[0209] Face number A14 A16 A18 A20 S5 6.24E-10 -5.69E-11 2.37E-12 -4.23E-14 S6 7.26E-10 7.09E-12 -1.11E-12 2.29E-14 S14 -7.23E-10 9.40E-12 1.77E-12 -6.20E-14 S15 -6.17E-10 6.30E-11 4.88E-12 -2.92E-13

[0210] Example 9

[0211] The following is for reference Figure 9 An optical lens according to Embodiment 9 of this application is described. In this embodiment, for the sake of brevity, descriptions similar to those in Embodiment 1 are omitted. Figure 9 A schematic diagram of the structure of an optical lens according to Embodiment 9 of this application is shown.

[0212] like Figure 9 As shown, the optical lens, along the optical axis from the first side to the second side, includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8. The difference between the positive and negative optical powers of the lenses in Embodiment 9 and Embodiment 1 is only that the fifth lens L5 in Embodiment 9 has a positive optical power. The sixth lens L6 and the seventh lens L7 are cemented together to form a bonded component.

[0213] Table 17 shows the parameters of each lens in the optical lens of Embodiment 9. The surface shape of each lens can be obtained from the table below and will not be repeated. Table 18 shows the parameters of the aspherical lenses that can be used in the embodiments, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0214] Table 17

[0215]

[0216]

[0217] Table 18-1

[0218] Face number k A4 A6 A8 A10 A12 S5 6.48E+00 -7.00E-06 8.53E-07 -7.40E-07 -2.66E-08 -1.52E-09 S6 -2.08E+01 7.85E-04 3.31E-05 -3.35E-06 3.69E-07 -2.45E-08 S14 -5.51E+00 1.99E-03 -2.86E-05 -1.01E-06 1.53E-07 8.81E-09 S15 8.66E+00 2.62E-04 1.99E-05 -2.09E-06 6.17E-07 -2.80E-08

[0219] Table 18-2

[0220] Face number A14 A16 A18 A20 S5 6.44E-10 -5.85E-11 2.25E-12 -3.79E-14 S6 7.85E-10 6.53E-12 -1.31E-12 2.78E-14 S14 -1.24E-09 1.39E-12 4.02E-12 -1.26E-13 S15 -2.10E-09 9.61E-11 1.12E-11 -5.41E-13

[0221] Example 10

[0222] The following is for reference Figure 10 An optical lens according to Embodiment 10 of this application is described. In this embodiment, for the sake of brevity, descriptions similar to those in Embodiment 1 are omitted. Figure 10 A schematic diagram of the structure of an optical lens according to Embodiment 10 of this application is shown.

[0223] like Figure 10 As shown, the optical lens, along the optical axis from the first side to the second side, includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8. The optical power of each lens in Embodiment 10 is the same as that in Embodiment 1. The sixth lens L6 and the seventh lens L7 are cemented together to form a bonded component.

[0224] Table 19 shows the parameters of each lens in the optical lens of Embodiment 10. The surface shape of each lens can be obtained from the table below and will not be described again. Table 20 shows the parameters of the aspherical lenses that can be used in the embodiments, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0225] Table 19

[0226]

[0227]

[0228] Table 20-1

[0229] Face number k A4 A6 A8 A10 A12 S5 8.31E+00 -4.35E-05 -5.52E-06 -3.71E-07 -2.91E-08 -2.00E-09 S6 5.82E+01 6.75E-04 2.60E-05 -3.07E-06 3.71E-07 -2.52E-08 S14 -2.21E+00 1.09E-03 -1.47E-05 5.96E-08 1.28E-08 4.32E-09 S15 4.31E+00 5.35E-04 1.50E-05 -2.09E-06 1.66E-07 1.45E-08

[0230] Table 20-2

[0231] Face number A14 A16 A18 A20 S5 6.43E-10 -5.79E-11 2.26E-12 -3.69E-14 S6 7.49E-10 7.79E-12 -1.11E-12 2.11E-14 S14 -6.33E-10 1.24E-11 1.14E-12 -4.51E-14 S15 -1.33E-09 -9.30E-11 9.92E-12 -2.29E-13

[0232] Example 11

[0233] The following is for reference Figure 11 An optical lens according to Embodiment 11 of this application is described. In this embodiment, for the sake of brevity, descriptions similar to those in Embodiment 1 are omitted. Figure 11 A schematic diagram of the structure of an optical lens according to Embodiment 11 of this application is shown.

[0234] like Figure 11As shown, the optical lens, along the optical axis from the first side to the second side, includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8. The difference between the positive and negative optical powers of the lenses in Embodiment 11 and Embodiment 1 is only that the fifth lens L5 in Embodiment 11 has a positive optical power. The sixth lens L6 and the seventh lens L7 are cemented together to form a bonded component.

[0235] Table 21 shows the parameters of each lens of the optical lens of Embodiment 11. The surface shape of each lens can be obtained from the table below and will not be repeated. Table 22 shows the parameters of the aspherical lenses that can be used in the embodiments, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0236] Table 21

[0237]

[0238]

[0239] Table 22-1

[0240] Face number k A4 A6 A8 A10 A12 S5 4.98E+00 1.97E-04 -2.80E-06 -4.30E-07 -4.27E-08 -2.99E-09 S6 5.38E+01 9.62E-04 3.76E-05 -3.09E-06 3.61E-07 -2.57E-08 S14 -3.28E+00 1.06E-03 -9.84E-06 -6.60E-07 1.30E-08 7.49E-09 S15 5.31E-01 6.08E-04 7.82E-06 -4.85E-06 6.14E-07 -1.36E-08

[0241] Table 22-2

[0242] Face number A14 A16 A18 A20 S5 6.31E-10 -5.43E-11 2.50E-12 -6.02E-14 S6 7.72E-10 1.12E-11 -1.04E-12 -2.31E-15 S14 -5.94E-10 6.81E-12 6.84E-13 -1.86E-14 S15 -2.47E-09 4.68E-11 1.25E-11 -5.16E-13

[0243] Example 12

[0244] The following is for reference Figure 12 An optical lens according to Embodiment 12 of this application is described. In this embodiment, for the sake of brevity, descriptions similar to those in Embodiment 1 are omitted. Figure 12 A schematic diagram of the structure of an optical lens according to Embodiment 12 of this application is shown.

[0245] like Figure 12 As shown, the optical lens, along the optical axis from the first side to the second side, includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8. The difference between the optical lens of Embodiment 12 and Embodiment 1 is only that the second lens L2 in Embodiment 12 has a positive optical power, and the eighth lens L8 has a negative optical power. The sixth lens L6 and the seventh lens L7 are cemented together to form a cemented joint, and the first side surface S14 of the eighth lens L8 has a recurve shape.

[0246] Table 23 shows the parameters of each lens in the optical lens of Embodiment 12. The surface shape of each lens can be obtained from the table below and will not be repeated. Table 24 shows the parameters of the aspherical lenses that can be used in the embodiments, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0247] Table 23

[0248] Face number Radius of curvature R (mm) Thickness / Distance (mm) Refractive index Nd Abbe number Vd S1 30.0000 1.1932 1.52 64.20 S2 4.9285 5.1130 S3 -12.2689 5.0000 1.92 23.96 S4 -11.5208 0.1000 STO infinity 1.9000 S5 10.6536 5.9476 1.50 81.61 S6 -7.6231 0.1000 S7 -21.4801 2.4886 1.92 20.88 S8 -18.1964 0.3727 S9 -27.2893 1.1925 1.85 25.15 S10 14.6956 0.1000 S11 9.0511 5.0000 1.59 68.62 S12 -5.7088 1.0000 1.86 36.60 S13 -8.2805 0.1000 S14 51.6939 3.2348 1.69 53.13 S15 7.4932 1.3721 S16 infinity 0.5000 1.52 64.20 S17 infinity 1.7338 S18 infinity 0.5000 1.52 64.20 S19 infinity 0.0524 IMA / /

[0249] Table 24-1

[0250] Face number k A4 A6 A8 A10 A12 S5 -2.34E+00 -4.65E-06 -2.82E-05 6.96E-06 -1.27E-06 1.40E-07 S6 -4.55E-01 2.28E-04 -4.27E-06 3.68E-07 -1.01E-07 1.31E-08 S14 -9.15E+01 -1.45E-03 -4.23E-05 8.38E-06 -1.40E-06 1.55E-07 S15 -6.28E+00 4.54E-04 -2.27E-04 5.32E-05 -9.17E-06 1.06E-06

[0251] Table 24-2

[0252] Face number A14 A16 A18 A20 S5 -9.65E-09 4.01E-10 -9.22E-12 8.99E-14 S6 -9.92E-10 4.31E-11 -9.99E-13 9.56E-15 S14 -1.11E-08 4.96E-10 -1.25E-11 1.33E-13 S15 -7.77E-08 3.50E-09 -8.75E-11 9.21E-13

[0253] Example 13

[0254] The following is for reference Figure 13 An optical lens according to Embodiment 13 of this application is described. In this embodiment, for the sake of brevity, descriptions similar to those in Embodiment 1 are omitted. Figure 13 A schematic diagram of the structure of an optical lens according to Embodiment 13 of this application is shown.

[0255] like Figure 13 As shown, the optical lens, along the optical axis from the first side to the second side, includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8. The optical power of each lens in Embodiment 13 is the same as that in Embodiment 1. The sixth lens L6 and the seventh lens L7 are cemented together to form a cemented joint, and the second side surface S6 of the third lens L3 has a recurve shape.

[0256] Table 25 shows the parameters of each lens of the optical lens of Embodiment 13. The surface shape of each lens can be obtained from the following table and will not be repeated. Table 26 shows the parameters of the aspherical lenses that can be used in the embodiments, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0257] Table 25

[0258] Face number Radius of curvature R (mm) Thickness / Distance (mm) Refractive index Nd Abbe number Vd S1 23.2255 1.1000 1.52 64.20 S2 5.4237 4.0713 S3 -6.7785 3.7029 1.80 42.25 S4 -22.2395 0.1000 STO infinity 0.1000 S5 13.5306 3.2944 1.81 40.99 S6 -8099.9978 0.1000 S7 13.0584 5.5000 1.50 81.61 S8 -8.1985 0.1000 S9 -15.3771 1.6307 1.72 37.99 S10 -100.0000 0.1000 S11 9.6104 5.0000 1.59 68.62 S12 -8.7857 1.4685 1.73 32.23 S13 13.8775 0.1000 S14 7.5932 4.0000 1.69 53.13 S15 12.8531 2.0069 S16 infinity 0.5000 1.52 64.20 S17 infinity 1.7338 S18 infinity 0.5000 1.52 64.20 S19 infinity 0.0512 IMA / /

[0259] Table 26-1

[0260] Face number k A4 A6 A8 A10 A12 S5 6.79E+00 5.11E-06 -4.41E-06 -1.42E-07 -2.33E-08 -2.42E-09 S6 -9.90E+01 5.99E-04 2.53E-05 -3.00E-06 3.81E-07 -2.53E-08 S14 -3.71E+00 6.93E-04 -2.03E-05 3.40E-07 -4.70E-08 5.70E-09 S15 4.11E+00 6.10E-04 -1.50E-05 -1.63E-07 -9.14E-10 -3.77E-10

[0261] Table 26- 2

[0262] Face number A14 A16 A18 A20 S5 6.20E-10 -5.69E-11 2.40E-12 -4.16E-14 S6 7.28E-10 8.33E-12 -1.03E-12 1.75E-14 S14 -3.84E-10 1.12E-11 -7.22E-17 -4.50E-15 S15 -1.64E-10 4.69E-12 8.46E-13 -3.68E-14

[0263] Example 14

[0264] The following is for reference Figure 14 An optical lens according to Embodiment 14 of this application is described. In this embodiment, for the sake of brevity, descriptions similar to those in Embodiment 1 are omitted. Figure 14 A schematic diagram of the structure of an optical lens according to Embodiment 14 of this application is shown.

[0265] like Figure 14 As shown, the optical lens, along the optical axis from the first side to the second side, includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8. The difference between the positive and negative optical powers of the lenses in Embodiment 14 and Embodiment 1 is only that the eighth lens L8 in Embodiment 14 has a negative optical power. The sixth lens L6 and the seventh lens L7 are cemented together to form a cemented joint, and the second side S6 of the third lens L3 has a recurve shape.

[0266] Table 27 shows the parameters of each lens in the optical lens of Embodiment 14. The surface shape of each lens can be obtained from the table below and will not be repeated. Table 28 shows the parameters of the aspherical lenses that can be used in the embodiments, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0267] Table 27

[0268] Face number Radius of curvature R (mm) Thickness / Distance (mm) Refractive index Nd Abbe number Vd S1 22.5101 1.2114 1.52 64.20 S2 5.2432 3.2491 S3 -7.5404 4.1841 1.80 42.25 S4 -30.5609 0.1000 STO infinity 0.1000 S5 12.9062 3.8609 1.81 40.99 S6 -674.8276 0.1000 S7 12.4679 5.4813 1.50 81.61 S8 -7.9796 0.1000 S9 60.0000 1.2425 1.72 37.99 S10 8.2786 0.2977 S11 7.2241 5.0000 1.59 68.62 S12 -7.4469 1.0597 1.73 32.23 S13 -60.0000 0.1000 S14 13.8712 4.0000 1.69 53.13 S15 10.3716 1.7063 S16 infinity 0.5000 1.52 64.20 S17 infinity 1.7338 S18 infinity 0.5000 1.52 64.20 S19 infinity 0.0510 IMA / /

[0269] Table 28-1

[0270] Face number k A4 A6 A8 A10 A12 S5 6.36E+00 -6.80E-05 -8.01E-06 -2.02E-07 -2.68E-08 -2.59E-09 S6 -9.90E+01 7.69E-04 2.53E-05 -3.01E-06 3.78E-07 -2.55E-08 S14 -1.46E+01 3.34E-04 -2.75E-05 2.75E-07 -3.91E-08 5.54E-09 S15 2.66E+00 -8.69E-05 -1.95E-05 -5.14E-07 1.90E-08 1.38E-09

[0271] Table 28-2

[0272] Face number A14 A16 A18 A20 S5 6.18E-10 -5.66E-11 2.41E-12 -4.33E-14 S6 7.25E-10 8.37E-12 -1.02E-12 1.78E-14 S14 -4.04E-10 1.09E-11 5.78E-14 -4.82E-15 S15 -2.13E-10 -2.79E-12 9.86E-13 -2.46E-14

[0273] Example 15

[0274] The following is for reference Figure 15 An optical lens according to Embodiment 15 of this application is described. In this embodiment, for the sake of brevity, descriptions similar to those in Embodiment 1 are omitted. Figure 15 A schematic diagram of the structure of an optical lens according to Embodiment 15 of this application is shown.

[0275] like Figure 15As shown, the optical lens, along the optical axis from the first side to the second side, includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8. The difference between the positive and negative optical powers of the lenses in Embodiment 15 and Embodiment 1 is only that the fourth lens L4 in Embodiment 15 has a negative optical power. The sixth lens L6 and the seventh lens L7 are cemented together to form a cemented joint, and the first side surface S5 of the third lens L3 has a recurve shape.

[0276] Table 29 shows the parameters of each lens of the optical lens of Embodiment 15. The surface shape of each lens can be obtained from the table below and will not be repeated. Table 30 shows the parameters of the aspherical lenses that can be used in the embodiments, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0277] Table 29

[0278] Face number Radius of curvature R (mm) Thickness / Distance (mm) Refractive index Nd Abbe number Vd S1 14.0245 1.1000 1.52 64.20 S2 5.8178 5.2579 S3 -7.1171 4.7565 1.80 42.25 S4 -11.5507 1.1771 STO infinity 0.1000 S5 38.9098 2.8375 1.81 40.99 S6 -32.0212 0.1000 S7 -46.9050 2.3933 1.50 81.61 S8 -49.2134 0.1000 S9 19.3499 1.6587 1.72 37.99 S10 9.0076 0.1000 S11 7.0878 4.6872 1.59 68.62 S12 -7.0978 1.0000 1.73 32.23 S13 15.4200 0.1000 S14 5.4747 4.0000 1.69 53.13 S15 20.6781 4.8462 S16 infinity 0.5000 1.52 64.20 S17 infinity 1.7338 S18 infinity 0.5000 1.52 64.20 S19 infinity 0.0522 IMA / /

[0279] Table 30-1

[0280]

[0281]

[0282] Table 30-2

[0283] Face number A14 A16 A18 A20 S5 5.91E-10 -5.71E-11 2.39E-12 -3.61E-14 S6 7.18E-10 7.58E-12 -9.76E-13 1.95E-14 S14 -4.46E-10 1.16E-11 1.22E-13 -6.60E-15 S15 -1.22E-11 1.56E-12 8.56E-14 -7.96E-15

[0284] Example 16

[0285] The following is for reference Figure 16 An optical lens according to Embodiment 16 of this application is described. In this embodiment, for the sake of brevity, descriptions similar to those in Embodiment 1 are omitted. Figure 16 A schematic diagram of the structure of an optical lens according to Embodiment 16 of this application is shown.

[0286] like Figure 16 As shown, the optical lens, along the optical axis from the first side to the second side, includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8. The optical power of each lens in Embodiment 16 is the same as that in Embodiment 1. Specifically, the fifth lens L5 and the sixth lens L6 are cemented together to form a cemented joint, and the second side surface S6 of the third lens L3 has a recurve shape.

[0287] Table 31 shows the parameters of each lens of the optical lens of Embodiment 16. The surface shape of each lens can be obtained from the table below and will not be described again. Table 32 shows the parameters of the aspherical lenses that can be used in the embodiments, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0288] Table 31

[0289]

[0290]

[0291] Table 32-1

[0292] Face number k A4 A6 A8 A10 A12 S5 6.94E+00 -3.97E-05 -5.65E-05 2.28E-05 -5.35E-06 7.49E-07 S6 -2.35E+01 6.99E-04 6.00E-05 -1.35E-05 2.59E-06 -3.03E-07 S14 -3.80E+00 4.33E-04 -5.42E-06 4.34E-08 -1.08E-09 8.62E-11 S15 -6.67E-01 5.77E-04 -2.30E-06 1.67E-07 -1.27E-08 2.10E-10

[0293] Table 32-2

[0294] Face number A14 A16 A18 A20 S5 -6.54E-08 3.47E-09 -1.02E-10 1.28E-12 S6 2.17E-08 -9.35E-10 2.20E-11 -2.15E-13 S14 -4.70E-12 9.39E-14 -7.78E-16 2.31E-18 S15 -1.54E-12 5.62E-15 -9.88E-18 6.60E-21

[0295] Example 17

[0296] The following is for reference Figure 17 An optical lens according to Embodiment 17 of this application is described. In this embodiment, for the sake of brevity, descriptions similar to those in Embodiment 1 are omitted. Figure 17 A schematic diagram of the structure of an optical lens according to Embodiment 17 of this application is shown.

[0297] like Figure 17 As shown, the optical lens, along the optical axis from the first side to the second side, includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8. The optical power of each lens in Embodiment 17 is the same as that in Embodiment 1. Specifically, the fifth lens L5 and the sixth lens L6 are cemented together to form a cemented joint, and the second side surface S6 of the third lens L3 has a recurve shape.

[0298] Table 33 shows the parameters of each lens of the optical lens of Embodiment 17. The surface shape of each lens can be obtained from the table below and will not be repeated. Table 34 shows the parameters of the aspherical lenses that can be used in the embodiments, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0299] Table 33

[0300]

[0301]

[0302] Table 34-1

[0303] Face number k A4 A6 A8 A10 A12 S5 6.45E+00 -1.41E-05 -2.09E-05 9.67E-06 -2.22E-06 2.97E-07 S6 1.00E+01 9.80E-04 6.29E-05 -1.28E-05 2.30E-06 -2.43E-07 S14 -4.90E+00 1.01E-03 -7.88E-05 1.13E-05 -1.30E-06 9.53E-08 S15 1.10E+01 2.77E-04 -8.24E-05 3.68E-06 6.10E-09 -1.21E-08

[0304] Table 34-2

[0305] Face number A14 A16 A18 A20 S5 -2.49E-08 1.26E-09 -3.52E-11 4.19E-13 S6 1.54E-08 -5.69E-10 1.07E-11 -7.21E-14 S14 -4.34E-09 1.15E-10 -1.36E-12 -1.42E-15 S15 -5.09E-10 2.75E-11 3.95E-12 -1.92E-13

[0306] Example 18

[0307] The following is for reference Figure 18 An optical lens according to Embodiment 18 of this application is described. In this embodiment, for the sake of brevity, descriptions similar to those in Embodiment 1 are omitted. Figure 18 A schematic diagram of the structure of an optical lens according to Embodiment 18 of this application is shown.

[0308] like Figure 18 As shown, the optical lens, along the optical axis from the first side to the second side, includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8. The optical power of each lens in Embodiment 18 is the same as that in Embodiment 1. The sixth lens L6 and the seventh lens L7 are cemented together to form a cemented joint, and the second side surface S6 of the third lens L3 has a recurve shape.

[0309] Table 35 shows the parameters of each lens of the optical lens of Embodiment 18. The surface shape of each lens can be obtained from the table below and will not be repeated. Table 36 shows the parameters of the aspherical lenses that can be used in the embodiments, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0310] Table 35

[0311]

[0312]

[0313] Table 36-1

[0314] Face number k A4 A6 A8 A10 A12 S5 6.61E+00 -5.08E-05 -3.01E-05 9.16E-06 -2.08E-06 2.75E-07 S6 -9.15E+00 6.65E-04 2.37E-05 -3.65E-06 5.62E-07 -5.38E-08 S14 -6.96E+00 1.37E-03 -5.74E-05 2.41E-06 -9.64E-08 2.08E-09 S15 6.09E+00 4.81E-04 -3.91E-05 6.68E-06 -2.59E-07 -1.05E-07

[0315] Table 36-2

[0316] Face number A14 A16 A18 A20 S5 -2.27E-08 1.13E-09 -3.10E-11 3.62E-13 S6 3.19E-09 -1.14E-10 2.25E-12 -1.84E-14 S14 -2.46E-11 1.64E-13 -5.78E-16 8.46E-19 S15 1.87E-08 -1.39E-09 5.06E-11 -7.29E-13

[0317] Example 19

[0318] The following is for reference Figure 19 An optical lens according to Embodiment 19 of this application is described. In this embodiment, for the sake of brevity, descriptions similar to those in Embodiment 1 are omitted. Figure 19 A schematic diagram of the structure of an optical lens according to Embodiment 19 of this application is shown.

[0319] like Figure 19As shown, the optical lens, along the optical axis from the first side to the second side, includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8. The optical power of each lens in Embodiment 19 is the same as that in Embodiment 1. Specifically, the sixth lens L6 and the seventh lens L7 are cemented together to form a cemented joint, and the second side surface S6 of the third lens L3 has a recurve shape.

[0320] Table 37 shows the parameters of each lens of the optical lens of Embodiment 19. The surface shape of each lens can be obtained from the table below and will not be repeated. Table 38 shows the parameters of the aspherical lenses that can be used in the embodiments, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0321] Table 37

[0322]

[0323]

[0324] Table 38-1

[0325] Face number k A4 A6 A8 A10 A12 S5 6.24E+00 -7.42E-05 -3.54E-05 1.70E-05 -4.55E-06 7.17E-07 S6 -6.27E+01 5.55E-04 5.58E-05 -1.28E-05 2.51E-06 -3.03E-07 S14 -4.70E+00 7.42E-04 -3.74E-05 7.21E-07 2.48E-07 -5.70E-08 S15 2.97E+00 5.49E-04 -7.37E-05 1.05E-05 -8.41E-07 -4.51E-08

[0326] Table 38-2

[0327] Face number A14 A16 A18 A20 S5 -6.98E-08 4.09E-09 -1.33E-10 1.82E-12 S6 2.26E-08 -1.02E-09 2.54E-11 -2.66E-13 S14 5.66E-09 -3.09E-10 8.97E-12 -1.08E-13 S15 1.51E-08 -1.32E-09 5.31E-11 -8.35E-13

[0328] Example 20

[0329] The following is for reference Figure 20 An optical lens according to Embodiment 20 of this application is described. In this embodiment, for the sake of brevity, descriptions similar to those in Embodiment 1 are omitted. Figure 20 A schematic diagram of the structure of an optical lens according to Embodiment 20 of this application is shown.

[0330] like Figure 20 As shown, the optical lens, along the optical axis from the first side to the second side, includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8. The difference between the optical lens of Embodiment 20 and Embodiment 1 lies only in that the second lens L2 in Embodiment 20 has a positive optical power, and the third lens L3 has a negative optical power. The sixth lens L6 and the seventh lens L7 are cemented together to form a cemented joint, and the second side surface S6 of the third lens L3 has a recurve shape.

[0331] Table 39 shows the parameters of each lens in the optical lens of Embodiment 20. The surface shape of each lens can be obtained from the following table and will not be repeated. Table 40 shows the parameters of the aspherical lenses that can be used in the embodiments, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0332] Table 39

[0333]

[0334]

[0335] Table 40-1

[0336] Face number k A4 A6 A8 A10 A12 S5 7.24E+00 -1.34E-04 -1.38E-04 6.59E-05 -1.77E-05 2.97E-06 S6 5.62E+01 -2.90E-05 7.81E-05 -2.67E-05 6.20E-06 -8.66E-07 S14 -4.44E+00 1.02E-03 -8.82E-05 1.39E-05 -2.06E-06 2.01E-07 S15 3.00E+00 3.62E-04 -1.73E-04 4.20E-05 -6.07E-06 5.02E-07

[0337] Table 40-2

[0338] Face number A14 A16 A18 A20 S5 -3.17E-07 2.08E-08 -7.70E-10 1.22E-11 S6 7.43E-08 -3.82E-09 1.08E-10 -1.28E-12 S14 -1.27E-08 4.96E-10 -1.08E-11 1.00E-13 S15 -2.20E-08 2.92E-10 1.15E-11 -3.38E-13

[0339] Example 21

[0340] The following is for reference Figure 21 An optical lens according to Embodiment 21 of this application is described. In this embodiment, for the sake of brevity, descriptions similar to those in Embodiment 1 are omitted. Figure 21 A schematic diagram of the structure of an optical lens according to Embodiment 21 of this application is shown.

[0341] like Figure 21 As shown, the optical lens, along the optical axis from the first side to the second side, includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8. The optical power of each lens in Embodiment 21 is the same as that in Embodiment 1. The sixth lens L6 and the seventh lens L7 are cemented together to form a bonded component.

[0342] Table 41 shows the parameters of each lens of the optical lens of Embodiment 21. The surface shape of each lens can be obtained from the table below and will not be repeated. Table 42 shows the parameters of the aspherical lenses that can be used in the embodiments, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0343] Table 41

[0344] Face number Radius of curvature R (mm) Thickness / Distance (mm) Refractive index Nd Abbe number Vd S1 13.9951 1.5000 1.52 64.20 S2 5.0784 3.3263 S3 -7.3099 4.5645 1.80 42.25 S4 -27.6650 0.1000 STO infinity 0.1000 S5 14.3747 3.7483 1.81 40.99 S6 100.0000 0.4001 S7 14.4539 5.5000 1.50 81.61 S8 -8.0562 0.1000 S9 31.5476 2.0000 1.72 37.99 S10 9.0241 0.1104 S11 7.1772 4.6383 1.59 68.62 S12 -10.8329 1.3000 1.73 32.23 S13 16.1884 0.1000 S14 8.0070 4.0000 1.69 53.13 S15 12.2304 1.5427 S16 infinity 0.5000 1.52 64.20 S17 infinity 1.7338 S18 infinity 0.5000 1.52 64.20 S19 infinity -0.0062 IMA / /

[0345] Table 42-1

[0346] Face number k A4 A6 A8 A10 A12 S5 6.92E+00 9.72E-05 -5.29E-05 2.08E-05 -5.46E-06 8.59E-07 S6 9.41E+00 7.31E-04 2.14E-05 -3.36E-06 5.32E-07 -5.34E-08 S14 -4.13E+00 7.79E-04 -5.99E-07 -6.54E-06 1.14E-06 -1.27E-07 S15 4.15E+00 7.62E-04 -8.56E-05 2.11E-05 -3.61E-06 3.45E-07

[0347] Table 42-2

[0348] Face number A14 A16 A18 A20 S5 -8.38E-08 4.94E-09 -1.61E-10 2.23E-12 S6 3.29E-09 -1.22E-10 2.49E-12 -2.11E-14 S14 8.96E-09 -3.95E-10 9.86E-12 -1.06E-13 S15 -1.79E-08 3.60E-10 5.41E-12 -2.51E-13

[0349] Example 22

[0350] The following is for reference Figure 22 An optical lens according to Embodiment 22 of this application is described. In this embodiment, for the sake of brevity, descriptions similar to those in Embodiment 1 are omitted. Figure 22 A schematic diagram of the structure of an optical lens according to Embodiment 22 of this application is shown.

[0351] like Figure 22 As shown, the optical lens, along the optical axis from the first side to the second side, includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8. The difference between the positive and negative optical powers of the lenses in Embodiment 22 and Embodiment 1 is only that the third lens L3 in Embodiment 22 has a negative optical power. The sixth lens L6 and the seventh lens L7 are cemented together to form a bonded component.

[0352] Table 43 shows the parameters of each lens of the optical lens of Embodiment 22. The surface shape of each lens can be obtained from the following table and will not be repeated. Table 44 shows the parameters of the aspherical lenses that can be used in the embodiments, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0353] Table 43

[0354] Face number Radius of curvature R (mm) Thickness / Distance (mm) Refractive index Nd Abbe number Vd S1 12.6290 1.5000 1.52 64.20 S2 4.6503 4.0601 S3 -6.7480 4.3000 1.80 42.25 S4 -9.6604 0.1533 STO infinity 0.1000 S5 48.8044 2.0000 1.81 40.99 S6 46.5333 0.4876 S7 16.0430 5.5000 1.50 81.61 S8 -7.0585 0.1000 S9 43.0591 3.5000 1.72 37.99 S10 9.3571 0.1480 S11 7.3130 5.0000 1.59 68.62 S12 -10.6123 1.0000 1.73 32.23 S13 11.3000 0.1000 S14 7.1149 4.0000 1.69 53.13 S15 17.4861 1.2995 S16 infinity 0.5000 1.52 64.20 S17 infinity 1.7338 S18 infinity 0.5000 1.52 64.20 S19 infinity 0.0541 IMA / /

[0355] Table 44-1

[0356] Face number k A4 A6 A8 A10 A12 S5 1.62E+01 2.84E-04 -9.82E-08 -9.76E-07 1.13E-07 -2.07E-08 S6 5.89E+01 5.56E-04 6.54E-05 -1.99E-05 3.79E-06 -4.49E-07 S14 -3.05E+00 7.95E-04 -1.53E-05 -1.19E-06 6.48E-07 -1.19E-07 S15 7.26E+00 7.92E-04 -1.40E-04 4.26E-05 -7.27E-06 7.74E-07

[0357] Table 44-2

[0358]

[0359]

[0360] Example 23

[0361] The following is for reference Figure 23 An optical lens according to Embodiment 23 of this application is described. In this embodiment, for the sake of brevity, descriptions similar to those in Embodiment 1 are omitted. Figure 23 A schematic diagram of the structure of an optical lens according to Embodiment 23 of this application is shown.

[0362] like Figure 23As shown, the optical lens, along the optical axis from the first side to the second side, includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8. The optical power of each lens in Embodiment 23 is the same as that in Embodiment 1. The sixth lens L6 and the seventh lens L7 are cemented together to form a cemented joint, and the second side surface S6 of the third lens L3 has a recurve shape.

[0363] Table 45 shows the parameters of each lens of the optical lens of Embodiment 23. The surface shape of each lens can be obtained from the table below and will not be repeated. Table 46 shows the parameters of the aspherical lenses that can be used in the embodiments, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0364] Table 45

[0365] Face number Radius of curvature R (mm) Thickness / Distance (mm) Refractive index Nd Abbe number Vd S1 13.6816 1.4374 1.52 64.20 S2 5.1542 4.7022 S3 -7.5476 5.0000 1.80 42.25 S4 -44.8568 0.1000 STO infinity 0.1000 S5 13.6256 2.9789 1.81 40.99 S6 -28.3000 0.7555 S7 -100.0000 4.0531 1.50 81.61 S8 -7.5943 0.1000 S9 56.0097 1.4131 1.72 37.99 S10 9.7926 0.1000 S11 7.0609 3.7303 1.59 68.62 S12 -10.8390 3.2697 1.73 32.23 S13 11.2998 0.1000 S14 7.1142 4.0000 1.69 53.13 S15 17.2186 2.2452 S16 infinity 0.5000 1.52 64.20 S17 infinity 1.7338 S18 infinity 0.5000 1.52 64.20 S19 infinity -0.4204 IMA / /

[0366] Table 46-1

[0367]

[0368] Table 46-2

[0369] Face number A14 A16 A18 A20 S5 -2.49E-08 1.26E-09 -3.52E-11 4.16E-13 S6 1.54E-08 -5.70E-10 1.08E-11 -7.49E-14 S14 -4.36E-09 1.09E-10 -1.21E-12 -1.19E-16 S15 -5.98E-11 3.86E-12 2.83E-13 -1.45E-14

[0370] Example 24

[0371] The following is for reference Figure 24 An optical lens according to Embodiment 24 of this application is described. In this embodiment, for the sake of brevity, descriptions similar to those in Embodiment 1 are omitted. Figure 24 A schematic diagram of the structure of an optical lens according to Embodiment 24 of this application is shown.

[0372] like Figure 24 As shown, the optical lens, along the optical axis from the first side to the second side, includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8. The optical power of each lens in Embodiment 24 is the same as that in Embodiment 1. The sixth lens L6 and the seventh lens L7 are cemented together to form a cemented joint, and the second side surface S6 of the third lens L3 has a recurve shape.

[0373] Table 47 shows the parameters of each lens in the optical lens of Embodiment 24. The surface shape of each lens can be obtained from the following table and will not be repeated. Table 48 shows the parameters of the aspherical lenses that can be used in the embodiments, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0374] Table 47

[0375] Face number Radius of curvature R (mm) Thickness / Distance (mm) Refractive index Nd Abbe number Vd S1 19.0000 1.5000 1.52 64.20 S2 5.2560 4.5451 S3 -7.3613 4.7000 1.80 42.25 S4 -30.0000 0.1000 STO infinity 0.1000 S5 14.4625 3.4000 1.81 40.99 S6 -56.3136 0.1000 S7 16.5330 4.7704 1.50 81.61 S8 -8.1161 0.1000 S9 -100.0000 1.2500 1.72 37.99 S10 11.2856 0.0846 S11 7.7280 5.0000 1.59 68.62 S12 -9.7381 1.2538 1.73 32.23 S13 16.4690 0.1000 S14 7.9133 4.0000 1.69 53.13 S15 14.0000 2.1734 S16 infinity 0.5000 1.52 64.20 S17 infinity 1.7338 S18 infinity 0.5000 1.52 64.20 S19 infinity -0.0410 IMA / /

[0376] Table 48-1

[0377] Face number k A4 A6 A8 A10 A12 S5 7.37E+00 -8.99E-06 -6.10E-06 1.39E-06 -3.64E-07 4.52E-08 S6 4.32E+01 6.59E-04 3.18E-05 -5.41E-06 8.65E-07 -8.47E-08 S14 -6.27E+00 1.01E-03 -4.57E-05 2.36E-06 -2.01E-07 1.17E-08 S15 6.94E+00 5.31E-04 -2.00E-05 3.40E-07 -1.97E-08 -3.10E-09

[0378] Table 48-2

[0379] Face number A14 A16 A18 A20 S5 -3.49E-09 1.59E-10 -3.97E-12 4.05E-14 S6 5.15E-09 -1.91E-10 3.92E-12 -3.41E-14 S14 -4.67E-10 1.10E-11 -1.07E-13 -2.16E-16 S15 -8.77E-11 7.88E-12 7.68E-13 -3.81E-14

[0380] Example 25

[0381] The following is for reference Figure 25 An optical lens according to Embodiment 25 of this application is described. In this embodiment, for the sake of brevity, descriptions similar to those in Embodiment 1 are omitted. Figure 25 A schematic diagram of the structure of an optical lens according to Embodiment 25 of this application is shown.

[0382] like Figure 25 As shown, the optical lens, along the optical axis from the first side to the second side, includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8. The difference between the optical lens of Embodiment 25 and Embodiment 1 lies only in that the fifth lens L5 in Embodiment 25 has a positive optical power. The sixth lens L6 and the seventh lens L7 are cemented together to form a bonded component.

[0383] Table 49 shows the parameters of each lens of the optical lens of Embodiment 25. The surface shape of each lens can be obtained from the table below and will not be repeated. Table 50 shows the parameters of the aspherical lenses that can be used in the embodiments, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0384] Table 49

[0385]

[0386]

[0387] Table 50-1

[0388] Face number k A4 A6 A8 A10 A12 S5 6.70E+00 9.89E-05 -1.87E-06 -4.83E-07 -3.66E-08 -2.56E-09 S6 8.80E+01 1.02E-03 3.71E-05 -3.15E-06 3.71E-07 -2.54E-08 S14 -4.00E+00 1.35E-03 -1.49E-05 -1.21E-07 3.05E-08 5.70E-09 S15 4.00E+00 6.43E-04 -1.79E-05 3.43E-06 8.27E-08 -1.83E-08

[0389] Table 50-2

[0390] Face number A14 A16 A18 A20 S5 6.24E-10 -5.69E-11 2.37E-12 -4.23E-14 S6 7.26E-10 7.09E-12 -1.11E-12 2.29E-14 S14 -7.23E-10 9.40E-12 1.77E-12 -6.20E-14 S15 -6.17E-10 6.30E-11 4.88E-12 -2.92E-13

[0391] Example 26

[0392] The following is for reference Figure 26 An optical lens according to Embodiment 26 of this application is described. In this embodiment, for the sake of brevity, descriptions similar to those in Embodiment 1 are omitted. Figure 26 A schematic diagram of the structure of an optical lens according to Embodiment 26 of this application is shown.

[0393] like Figure 26 As shown, the optical lens, along the optical axis from the first side to the second side, includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8. The difference between the positive and negative optical powers of the lenses in Embodiment 26 and Embodiment 1 is only that the fifth lens L5 in Embodiment 26 has a positive optical power. The sixth lens L6 and the seventh lens L7 are cemented together to form a bonded component.

[0394] Table 51 shows the parameters of each lens of the optical lens of Embodiment 26. The surface shape of each lens can be obtained from the table below and will not be repeated. Table 52 shows the parameters of the aspherical lenses that can be used in the embodiments, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0395] Table 51

[0396]

[0397]

[0398] Table 52-1

[0399] Face number k A4 A6 A8 A10 A12 S5 6.48E+00 -7.00E-06 8.53E-07 -7.40E-07 -2.66E-08 -1.52E-09 S6 -2.10E+01 7.85E-04 3.31E-05 -3.35E-06 3.69E-07 -2.45E-08 S14 -5.51E+00 1.99E-03 -2.86E-05 -1.01E-06 1.53E-07 8.81E-09 S15 9.00E+00 2.62E-04 1.99E-05 -2.09E-06 6.17E-07 -2.80E-08

[0400] Table 52-2

[0401] Face number A14 A16 A18 A20 S5 6.44E-10 -5.85E-11 2.25E-12 -3.79E-14 S6 7.85E-10 6.53E-12 -1.31E-12 2.78E-14 S14 -1.24E-09 1.39E-12 4.02E-12 -1.26E-13 S15 -2.10E-09 9.61E-11 1.12E-11 -5.41E-13

[0402] Example 27

[0403] The following is for reference Figure 27 An optical lens according to Embodiment 27 of this application is described. In this embodiment, for the sake of brevity, descriptions similar to those in Embodiment 1 are omitted. Figure 27 A schematic diagram of the structure of an optical lens according to Embodiment 27 of this application is shown.

[0404] like Figure 27 As shown, the optical lens, along the optical axis from the first side to the second side, includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8. The optical power of each lens in Embodiment 27 is the same as that in Embodiment 1. The sixth lens L6 and the seventh lens L7 are cemented together to form a bonded component.

[0405] Table 53 shows the parameters of each lens of the optical lens of Embodiment 27. The surface shape of each lens can be obtained from the following table and will not be repeated. Table 54 shows the parameters of the aspherical lenses that can be used in the embodiments, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0406] Table 53

[0407]

[0408]

[0409] Table 54-1

[0410] Face number k A4 A6 A8 A10 A12 S5 8.73E+00 -4.35E-05 -5.52E-06 -3.71E-07 -2.91E-08 -2.00E-09 S6 6.40E+01 6.75E-04 2.60E-05 -3.07E-06 3.71E-07 -2.52E-08 S14 -2.21E+00 1.09E-03 -1.47E-05 5.96E-08 1.28E-08 4.32E-09 S15 4.53E+00 5.35E-04 1.50E-05 -2.09E-06 1.66E-07 1.45E-08

[0411] Table 54-2

[0412] Face number A14 A16 A18 A20 S5 6.43E-10 -5.79E-11 2.26E-12 -3.69E-14 S6 7.49E-10 7.79E-12 -1.11E-12 2.11E-14 S14 -6.33E-10 1.24E-11 1.14E-12 -4.51E-14 S15 -1.33E-09 -9.30E-11 9.92E-12 -2.29E-13

[0413] Example 28

[0414] The following is for reference Figure 28 An optical lens according to Embodiment 28 of this application is described. In this embodiment, for the sake of brevity, descriptions similar to those in Embodiment 1 are omitted. Figure 28 A schematic diagram of the structure of an optical lens according to Embodiment 28 of this application is shown.

[0415] like Figure 28 As shown, the optical lens, along the optical axis from the first side to the second side, includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8. The difference between the positive and negative optical powers of the lenses in Embodiment 28 and Embodiment 1 is only that the fifth lens L5 in Embodiment 28 has a positive optical power. The sixth lens L6 and the seventh lens L7 are cemented together to form a bonded component.

[0416] Table 55 shows the parameters of each lens of the optical lens of Embodiment 28. The surface shape of each lens can be obtained from the following table and will not be repeated. Table 56 shows the parameters of the aspherical lenses that can be used in the embodiments, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0417] Table 55

[0418]

[0419]

[0420] Table 56-1

[0421] Face number k A4 A6 A8 A10 A12 S5 5.03E+00 1.97E-04 -2.80E-06 -4.30E-07 -4.27E-08 -2.99E-09 S6 5.38E+01 9.62E-04 3.76E-05 -3.09E-06 3.61E-07 -2.57E-08 S14 -3.48E+00 1.06E-03 -9.84E-06 -6.60E-07 1.30E-08 7.49E-09 S15 4.51E-01 6.08E-04 7.82E-06 -4.85E-06 6.14E-07 -1.36E-08

[0422] Table 56-2

[0423] Face number A14 A16 A18 A20 S5 6.31E-10 -5.43E-11 2.50E-12 -6.02E-14 S6 7.72E-10 1.12E-11 -1.04E-12 -2.31E-15 S14 -5.94E-10 6.81E-12 6.84E-13 -1.86E-14 S15 -2.47E-09 4.68E-11 1.25E-11 -5.16E-13

[0424] Example 29

[0425] The following is for reference Figure 29 An optical lens according to Embodiment 29 of this application is described. In this embodiment, for the sake of brevity, parts similar to those in Embodiment 1 are omitted. Figure 29 A schematic diagram of the structure of an optical lens according to Embodiment 29 of this application is shown.

[0426] like Figure 29 As shown, the optical lens, along the optical axis from the first side to the second side, includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8. The difference between the optical lens of Embodiment 29 and Embodiment 1 lies only in that the second lens L2 in Embodiment 29 has a positive optical power, and the eighth lens L8 has a negative optical power. The sixth lens L6 and the seventh lens L7 are cemented together to form a cemented joint, and the first side surface S14 of the eighth lens L8 has a recurve shape.

[0427] Table 57 shows the parameters of each lens of the optical lens of Embodiment 29. The surface shape of each lens can be obtained from the table below and will not be repeated. Table 58 shows the parameters of the aspherical lenses that can be used in the embodiments, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0428] Table 57

[0429]

[0430]

[0431] Table 58-1

[0432] Face number k A4 A6 A8 A10 A12 S5 -2.34E+00 -4.65E-06 -2.82E-05 6.96E-06 -1.27E-06 1.40E-07 S6 -3.96E-01 2.28E-04 -4.27E-06 3.68E-07 -1.01E-07 1.31E-08 S14 -9.21E+01 -1.45E-03 -4.23E-05 8.38E-06 -1.40E-06 1.55E-07 S15 -6.31E+00 4.54E-04 -2.27E-04 5.32E-05 -9.17E-06 1.06E-06

[0433] Table 58-2

[0434] Face number A14 A16 A18 A20 S5 -9.65E-09 4.01E-10 -9.22E-12 8.99E-14 S6 -9.92E-10 4.31E-11 -9.99E-13 9.56E-15 S14 -1.11E-08 4.96E-10 -1.25E-11 1.33E-13 S15 -7.77E-08 3.50E-09 -8.75E-11 9.21E-13

[0435] Example 30

[0436] The following is for reference Figure 30 An optical lens according to Embodiment 30 of this application is described. In this embodiment, for the sake of brevity, descriptions similar to those in Embodiment 1 are omitted. Figure 30 A schematic diagram of the structure of an optical lens according to Embodiment 30 of this application is shown.

[0437] like Figure 30 As shown, the optical lens, along the optical axis from the first side to the second side, includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8. The optical power of each lens in Embodiment 30 is the same as that in Embodiment 1. The sixth lens L6 and the seventh lens L7 are cemented together to form a cemented joint, and the second side surface S6 of the third lens L3 has a recurve shape.

[0438] Table 59 shows the parameters of each lens in the optical lens of Embodiment 30. The surface shape of each lens can be obtained from the following table and will not be repeated. Table 60 shows the parameters of the aspherical lenses that can be used in the embodiments, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0439] Table 59

[0440] Face number Radius of curvature R (mm) Thickness / Distance (mm) Refractive index Nd Abbe number Vd S1 23.2255 1.1000 1.52 64.20 S2 5.4237 4.0000 S3 -6.7785 3.7000 1.80 42.25 S4 -22.2395 0.1000 STO infinity 0.1000 S5 13.5306 3.3000 1.81 40.99 S6 -8099.9978 0.1000 S7 13.0584 5.5000 1.50 81.61 S8 -8.1985 0.1000 S9 -15.3771 1.7000 1.72 37.99 S10 -100.0000 0.1000 S11 9.6104 5.0000 1.59 68.62 S12 -8.7857 1.5000 1.73 32.23 S13 13.8775 0.1000 S14 7.5932 4.0000 1.69 53.13 S15 12.8531 2.0000 S16 infinity 0.5000 1.52 64.20 S17 infinity 1.7338 S18 infinity 0.5000 1.52 64.20 S19 infinity 0.2006 IMA / /

[0441] Table 60-1

[0442] Face number k A4 A6 A8 A10 A12 S5 6.65E+00 5.11E-06 -4.41E-06 -1.42E-07 -2.33E-08 -2.42E-09 S6 -9.96E+01 5.99E-04 2.53E-05 -3.00E-06 3.81E-07 -2.53E-08 S14 -3.64E+00 6.93E-04 -2.03E-05 3.40E-07 -4.70E-08 5.70E-09 S15 4.32E+00 6.10E-04 -1.50E-05 -1.63E-07 -9.14E-10 -3.77E-10

[0443] Table 60-2

[0444] Face number A14 A16 A18 A20 S5 6.20E-10 -5.69E-11 2.40E-12 -4.16E-14 S6 7.28E-10 8.33E-12 -1.03E-12 1.75E-14 S14 -3.84E-10 1.12E-11 -7.22E-17 -4.50E-15 S15 -1.64E-10 4.69E-12 8.46E-13 -3.68E-14

[0445] Example 31

[0446] The following is for reference Figure 31 An optical lens according to Embodiment 31 of this application is described. In this embodiment, for the sake of brevity, descriptions similar to those in Embodiment 1 are omitted. Figure 31 A schematic diagram of the structure of an optical lens according to Embodiment 31 of this application is shown.

[0447] like Figure 31 As shown, the optical lens, along the optical axis from the first side to the second side, includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8. The difference between the positive and negative optical powers of the lenses in Embodiment 31 and Embodiment 1 is only that the eighth lens L8 in Embodiment 31 has a negative optical power. The sixth lens L6 and the seventh lens L7 are cemented together to form a cemented joint, and the second side S6 of the third lens L3 has a recurve shape.

[0448] Table 61 shows the parameters of each lens of the optical lens of Embodiment 31. The surface shape of each lens can be obtained from the table below and will not be repeated. Table 62 shows the parameters of the aspherical lenses that can be used in the embodiments, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0449] Table 61

[0450] Face number Radius of curvature R (mm) Thickness / Distance (mm) Refractive index Nd Abbe number Vd S1 22.5101 1.2000 1.52 64.20 S2 5.2432 3.3000 S3 -7.5404 4.2000 1.80 42.25 S4 -30.5609 0.1000 STO infinity 0.1000 S5 12.9062 4.0000 1.81 40.99 S6 -674.8276 0.1000 S7 12.4679 5.5000 1.50 81.61 S8 -7.9796 0.1000 S9 60.0000 1.2500 1.72 37.99 S10 8.2786 0.3000 S11 7.2241 5.0000 1.59 68.62 S12 -7.4469 1.0600 1.73 32.23 S13 -60.0000 0.1000 S14 13.8712 4.0000 1.69 53.13 S15 10.3716 1.7063 S16 infinity 0.5000 1.52 64.20 S17 infinity 1.7338 S18 infinity 0.5000 1.52 64.20 S19 infinity -0.0565 IMA / /

[0451] Table 62-1

[0452] Face number k A4 A6 A8 A10 A12 S5 6.43E+00 -6.80E-05 -8.01E-06 -2.02E-07 -2.68E-08 -2.59E-09 S6 -1.06E+02 7.69E-04 2.53E-05 -3.01E-06 3.78E-07 -2.55E-08 S14 -1.46E+01 3.34E-04 -2.75E-05 2.75E-07 -3.91E-08 5.54E-09 S15 2.66E+00 -8.69E-05 -1.95E-05 -5.14E-07 1.90E-08 1.38E-09

[0453] Table 62-2

[0454]

[0455]

[0456] Example 32

[0457] The following is for reference Figure 32 An optical lens according to Embodiment 32 of this application is described. In this embodiment, for the sake of brevity, descriptions similar to those in Embodiment 1 are omitted. Figure 32 A schematic diagram of the structure of an optical lens according to Embodiment 32 of this application is shown.

[0458] like Figure 32 As shown, the optical lens, along the optical axis from the first side to the second side, includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8. The difference between the positive and negative optical powers of the lenses in Embodiment 32 and Embodiment 1 is only that the fourth lens L4 in Embodiment 32 has a negative optical power. The sixth lens L6 and the seventh lens L7 are cemented together to form a cemented joint, and the first side surface S5 of the third lens L3 has a recurve shape.

[0459] Table 63 shows the parameters of each lens of the optical lens of Embodiment 32. The surface shape of each lens can be obtained from the following table and will not be repeated. Table 64 shows the parameters of the aspherical lenses that can be used in the embodiments, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0460] Table 63

[0461] Face number Radius of curvature R (mm) Thickness / Distance (mm) Refractive index Nd Abbe number Vd S1 14.0245 1.10 1.52 64.2 S2 5.8178 5.26 S3 -7.1171 4.80 1.80 42.25 S4 -11.5507 1.18 STO infinity 0.10 S5 38.9098 2.90 1.81 40.99 S6 -32.0212 0.10 S7 -47.0000 2.40 1.50 81.61 S8 -49.2134 0.10 S9 19.3000 1.70 1.72 37.99 S10 9.0076 0.10 S11 7.0878 4.70 1.59 68.62 S12 -7.0978 1.00 1.73 32.23 S13 15.4200 0.10 S14 5.4747 4.00 1.69 53.13 S15 20.6781 4.85 S16 infinity 0.50 1.52 64.2 S17 infinity 1.73 S18 infinity 0.50 1.52 64.2 S19 infinity -0.02 IMA / /

[0462] Table 64-1

[0463]

[0464] Table 64-2

[0465] Face number A14 A16 A18 A20 S5 5.91E-10 -5.71E-11 2.39E-12 -3.61E-14 S6 7.18E-10 7.58E-12 -9.76E-13 1.95E-14 S14 -4.46E-10 1.16E-11 1.22E-13 -6.60E-15 S15 -1.22E-11 1.56E-12 8.56E-14 -7.96E-15

[0466] Example 33

[0467] The following is for reference Figure 33 An optical lens according to Embodiment 33 of this application is described. In this embodiment, for the sake of brevity, descriptions similar to those in Embodiment 1 are omitted. Figure 33 A schematic diagram of the structure of an optical lens according to Embodiment 33 of this application is shown.

[0468] like Figure 33 As shown, the optical lens, along the optical axis from the first side to the second side, includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8. The optical power of each lens in Embodiment 33 is the same as that in Embodiment 1. Specifically, the fifth lens L5 and the sixth lens L6 are cemented together to form a bonded component, and the second side surface S6 of the third lens L3 has a recurve shape.

[0469] Table 65 shows the parameters of each lens in the optical lens of Embodiment 33. The surface shape of each lens can be obtained from the table below and will not be repeated. Table 66 shows the parameters of the aspherical lenses that can be used in the embodiments, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0470] Table 65

[0471] Face number Radius of curvature R (mm) Thickness / Distance (mm) Refractive index Nd Abbe number Vd S1 17.2717 1.5000 1.52 64.20 S2 5.4808 4.0627 S3 -8.6219 5.0000 1.80 42.25 S4 100.0000 0.1958 STO infinity 0.1000 S5 13.9742 3.2675 1.81 40.99 S6 -36.7583 0.2505 S7 22.2974 5.0000 1.50 81.61 S8 -7.2613 0.1000 S9 28.0000 2.4970 1.72 37.99 S10 6.2007 5.0000 1.59 68.62 S11 -9.4097 0.4222 S12 -10.6000 1.0485 1.73 32.23 S13 21.4415 0.1000 S14 10.0070 3.0000 1.69 53.13 S15 13.9059 1.6810 S16 infinity 0.5000 1.52 64.20 S17 infinity 1.7338 S18 infinity 0.5000 1.52 64.20 S19 infinity 0.6916 IMA / /

[0472] Table 66-1

[0473] Face number k A4 A6 A8 A10 A12 S5 7.00E+00 -3.97E-05 -5.65E-05 2.28E-05 -5.35E-06 7.49E-07 S6 -2.35E+01 6.99E-04 6.00E-05 -1.35E-05 2.59E-06 -3.03E-07 S14 -4.00E+00 4.33E-04 -5.42E-06 4.34E-08 -1.08E-09 8.62E-11 S15 -6.67E-01 5.77E-04 -2.30E-06 1.67E-07 -1.27E-08 2.10E-10

[0474] Table 66-2

[0475] Face number A14 A16 A18 A20 S5 -6.54E-08 3.47E-09 -1.02E-10 1.28E-12 S6 2.17E-08 -9.35E-10 2.20E-11 -2.15E-13 S14 -4.70E-12 9.39E-14 -7.78E-16 2.31E-18 S15 -1.54E-12 5.62E-15 -9.88E-18 6.60E-21

[0476] Example 34

[0477] The following is for reference Figure 34 An optical lens according to Embodiment 34 of this application is described. In this embodiment, for the sake of brevity, descriptions similar to those in Embodiment 1 are omitted. Figure 34 A schematic diagram of the structure of an optical lens according to Embodiment 34 of this application is shown.

[0478] like Figure 34 As shown, the optical lens, along the optical axis from the first side to the second side, includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8. The optical power of each lens in Embodiment 34 is the same as that in Embodiment 1. Specifically, the fifth lens L5 and the sixth lens L6 are cemented together to form a bonded component, and the second side surface S6 of the third lens L3 has a recurve shape.

[0479] Table 67 shows the parameters of each lens of the optical lens of Embodiment 34. The surface shape of each lens can be obtained from the table below and will not be repeated. Table 68 shows the parameters of the aspherical lenses that can be used in the embodiments, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0480] Table 67

[0481]

[0482]

[0483] Table 68-1

[0484] Face number k A4 A6 A8 A10 A12 S5 6.50E+00 -1.41E-05 -2.09E-05 9.67E-06 -2.22E-06 2.97E-07 S6 1.00E+01 9.80E-04 6.29E-05 -1.28E-05 2.30E-06 -2.43E-07 S14 -5.00E+00 1.01E-03 -7.88E-05 1.13E-05 -1.30E-06 9.53E-08 S15 1.10E+01 2.77E-04 -8.24E-05 3.68E-06 6.10E-09 -1.21E-08

[0485] Table 68-2

[0486] Face number A14 A16 A18 A20 S5 -2.49E-08 1.26E-09 -3.52E-11 4.19E-13 S6 1.54E-08 -5.69E-10 1.07E-11 -7.21E-14 S14 -4.34E-09 1.15E-10 -1.36E-12 -1.42E-15 S15 -5.09E-10 2.75E-11 3.95E-12 -1.92E-13

[0487] Furthermore, the optical lenses provided in Embodiments 1 to 34 of this application all achieve good imaging quality, and their MTF (modulation transfer function) curves are quite similar. Therefore, the optical lenses provided in this application... Figure 35 , Figure 36 Only the MTF curve diagrams of the optical lenses of Embodiments 1 and 2 are shown as examples. MTF curve diagrams of optical lenses of other embodiments are not shown one by one, and those skilled in the art should be able to understand them based on the disclosure of this application. In this application, the optical lenses of Embodiments 1 to 34 achieve an MTF of 0.7 or higher in the center field of view at 85 LP / MM (line pairs / mm), achieving a high resolution of 8M.

[0488] In summary, Examples 1 to 34 respectively satisfy the relationships shown in Tables 69-1, 69-2, and 69-3 below. In Tables 69-1, 69-2, and 69-3, the units of F, ENPD, TTL, H, F1 to F8, F12, F34, Dmax, and D are millimeters (mm), and the unit of θ is radians (rad).

[0489] Table 69-1

[0490]

[0491]

[0492] Table 69-2

[0493]

[0494]

[0495] Table 69-3

[0496]

[0497]

[0498] This application also provides an electronic device that may include an optical lens according to the above embodiments of this application and an imaging element for converting the optical image formed by the optical lens into an electrical signal. The electronic device may be a stand-alone electronic device, such as a rangefinder camera, or an imaging module integrated into a rangefinder device. Furthermore, the electronic device may also be a stand-alone imaging device, such as an in-vehicle camera, or an imaging module integrated into a driver assistance system, such as a driving assistance system.

[0499] 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, The optical lens comprises, sequentially from the first side to the second side along the optical axis: A first lens with negative optical power has a first side surface that is convex and a second side surface that is concave. A second lens with optical power has a concave first side surface; A third lens with optical power; The fourth lens, which has optical power, has a convex second side surface; A fifth lens with optical power; A sixth lens with positive optical power; A seventh lens with negative optical power; and The eighth lens, which has optical power, has a convex first side and a concave second side. The optical lens comprises eight lenses with optical power, and the optical lens satisfies the following: 4.3≤TTL / F≤6.5, 0.75≤R82 / F≤3.5, 0.008≤(d34+d45) / TTL≤0.032, 1.2≤|F2 / F|≤20, d56 / TTL≤0.02,0.01≤F*(1 / F3+1 / F4+1 / F5)≤1.8, Wherein, F is the total effective focal length of the optical lens, TTL is the total optical length of the optical lens, R82 is the radius of curvature of the second side surface of the eighth lens, d34 is the distance between the third and fourth lenses along the optical axis, d45 is the distance between the fourth and fifth lenses along the optical axis, d56 is the distance between the fifth and sixth lenses along the optical axis, 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, and F5 is the effective focal length of the fifth lens.

2. The optical lens according to claim 1, characterized in that, The second lens has negative optical power, and its second side surface is convex. Alternatively, the second lens may have positive optical power, and its second side surface may be convex or concave.

3. The optical lens according to claim 1, characterized in that, The third lens has positive optical power, and its first side is convex, while its second side is either convex or concave. Alternatively, the third lens may have negative optical power, with its first side being concave and its second side being convex, or its first side being convex and its second side being concave.

4. The optical lens according to claim 1, characterized in that, The fourth lens has positive optical power, and its first side surface is either convex or concave. Alternatively, the fourth lens may have negative optical power, and its first side surface may be concave.

5. The optical lens according to claim 1, characterized in that, The fifth lens has negative optical power, and its first side surface is either convex or concave, and its second side surface is concave, or its first side surface is concave and its second side surface is convex. Alternatively, the fifth lens may have positive optical power, with its first side being convex and its second side being either convex or concave, or its first side being concave and its second side being convex.

6. The optical lens according to claim 1, characterized in that, The first side surface of the sixth lens is convex, and the second side surface is either convex or concave. Alternatively, the first side may be concave and the second side may be convex.

7. The optical lens according to claim 1, characterized in that, The first side of the seventh lens is either convex or concave, and the second side is concave. Alternatively, the first side may be concave and the second side may be convex.

8. The optical lens according to claim 1, characterized in that, The eighth lens has positive or negative optical power.

9. The optical lens according to claim 1, characterized in that... The fifth lens and the sixth lens are glued together to form a glued component; Alternatively, the sixth lens and the seventh lens may be glued together to form a glued component.

10. An electronic device, characterized in that, The optical lens comprising any one of claims 1-9, and The electronic device further includes at least one of an imaging element and a light source; The imaging element is used to convert the optical image formed by the optical lens into an electrical signal, and the light emitted by the light source is projected onto the target area after passing through the optical lens to form an image or illuminate the area.

Images