Optical lens and electronic device with same

Abstract

The application provides an optical lens and an electronic device with the same, the optical lens comprising: a first lens, the first lens having a negative focal power, a first side of the first lens being a convex surface, and a second side of the first lens being a concave surface; a second lens, the second lens having a negative focal power, a first side of the second lens being a concave surface, and a second side of the second lens being a convex surface; a third lens having a positive focal power; a fourth lens having a positive focal power; a fifth lens, the fifth lens having a positive focal power, the first side and the second side of the fifth lens both being convex surfaces; a sixth lens, the sixth lens having a negative focal power; a seventh lens, the seventh lens having a positive focal power; and an eighth lens, the eighth lens having a focal power, a first side of the eighth lens being a convex surface, and a second side of the eighth lens being a concave surface. The application solves at least one problem in the prior art, such as difficulty in miniaturization of the optical lens, small field of view, poor imaging quality in a dark environment, poor temperature performance, serious aberration, and weak light transmission capacity.

Description

Technical Field

[0001] This invention relates to the field of optical imaging equipment technology, and more specifically, to an optical lens and an electronic device having the same. Background Technology

[0002] With technological advancements and increasing application demands, optical lenses have become widely used in many devices, especially in automotive applications, where user requirements for optical lenses are constantly rising. As optical lenses are increasingly deployed in various locations, concealment is often required. However, existing optical lenses typically have large front-end diameters and bulky dimensions, making them difficult to fit into limited installation spaces. Furthermore, their narrow field of view makes it difficult to monitor a wide area of ​​the surrounding environment. Additionally, existing optical lenses have limited light transmission capabilities, resulting in poor image quality in low-light environments such as nighttime or rainy days. Moreover, their temperature performance is poor in extreme temperatures, leading to image blurring after the temperature returns to normal. Finally, distortion and other aberrations remain significant issues with existing optical lenses, failing to meet user needs.

[0003] In other words, existing optical lenses suffer from at least one of the following problems: difficulty in miniaturization, small field of view, poor image quality in low light conditions, poor temperature performance, severe aberrations, and weak light transmission capability. Summary of the Invention

[0004] The main objective of this invention is to provide an optical lens and an electronic device having the same, so as to solve at least one of the following problems in the prior art: difficulty in miniaturizing optical lenses, small field of view, poor imaging quality in dark environments, poor temperature performance, severe aberrations, and weak light transmission capability.

[0005] To achieve the above objectives, according to one aspect of the present invention, an optical lens is provided, comprising: a first lens having negative optical power, a first side surface of the first lens being convex, and a second side surface of the first lens being concave; a second lens having negative optical power, a first side surface of the second lens being concave, and a second side surface of the second lens being convex; a third lens having positive optical power, a first side surface of the third lens being convex; a fourth lens having positive optical power, a first side surface of the fourth lens being convex; a fifth lens having positive optical power, both the first side surface and the second side surface of the fifth lens being convex; a sixth lens having negative optical power, a second side surface of the sixth lens being concave; a seventh lens having positive optical power, a first side surface of the seventh lens being convex; and an eighth lens having optical power, a first side surface of the eighth lens being convex, and a second side surface of the eighth lens being concave.

[0006] Furthermore, the second side surface of the third lens is concave.

[0007] Furthermore, the second side surface of the third lens is convex.

[0008] Furthermore, the second side surface of the fourth lens is convex.

[0009] Furthermore, the second side surface of the fourth lens is concave.

[0010] Furthermore, the first side surface of the sixth lens is concave.

[0011] Furthermore, the first side surface of the sixth lens is convex.

[0012] Furthermore, the second side surface of the seventh lens is convex.

[0013] Furthermore, the second side surface of the seventh lens is concave.

[0014] Furthermore, the eighth lens has positive optical power.

[0015] Furthermore, the eighth lens has negative optical power.

[0016] Furthermore, both the second and eighth lenses are aspherical lenses.

[0017] Furthermore, the sixth and seventh lenses are cemented together to form a cemented lens.

[0018] Furthermore, the fifth, sixth, and seventh lenses are cemented together to form a cemented lens.

[0019] Furthermore, the second side surface of the eighth lens has a recurved point.

[0020] Furthermore, the first side surface and the second side surface of the eighth lens have inflection points.

[0021] Furthermore, the optical lens also includes an aperture stop, which is located between the third lens and the fourth lens.

[0022] Furthermore, the total optical length (TTL) of the optical lens and the total focal length (F) of the optical lens satisfy the following condition: TTL / F ≤ 12.

[0023] Furthermore, the total optical length (TTL) of the optical lens, the image height (H) corresponding to the maximum field of view of the optical lens, and the maximum field of view (FOV) of the optical lens satisfy the following condition: TTL / H / FOV≤0.07.

[0024] Furthermore, the total optical length TTL of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy the following condition: TTL / H / θ≤3.5.

[0025] Furthermore, the image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy the following relationship: |(HF*θ) / (F*θ)|≤2.

[0026] Furthermore, the maximum aperture D of the first side of the first lens corresponding to the maximum aperture of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view FOV of the optical lens satisfy the following condition: D / H / FOV≤0.04.

[0027] Furthermore, the maximum aperture D of the first side of the first lens corresponding to the maximum aperture of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy the following: D / H / θ≤1.9.

[0028] Furthermore, the total optical length TTL of the optical lens, the total focal length F of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy the following condition: 0.8≤TTL / (F*θ)≤7.

[0029] Furthermore, the following conditions must be met between the total focal length F of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view FOV of the optical lens: 200≤(FOV*H) / F.

[0030] Furthermore, the following relationship exists between the total focal length F of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens: 2.2≤(θ*H) / F.

[0031] Furthermore, the focal length F3 of the third lens and the total focal length F of the optical lens satisfy the following condition: F3 / F≥0.001.

[0032] Furthermore, the radius of curvature R4 of the second side of the second lens and the total focal length F of the optical lens satisfy the following condition: R4 / F≤-0.001.

[0033] Furthermore, the focal length F2 of the second lens and the total focal length F of the optical lens satisfy the following condition: F2 / F≤-10.

[0034] Furthermore, the radius of curvature R7 of the first side of the fourth lens and the total focal length F of the optical lens satisfy the following condition: 0.5≤R7 / F≤8.

[0035] Furthermore, the radius of curvature R9 of the first side surface of the fifth lens and the radius of curvature R12 of the second side surface of the sixth lens satisfy the condition: 0.1 ≤ R9 / R12.

[0036] Furthermore, the radius of curvature R15 of the first side of the eighth lens and the total focal length F of the optical lens satisfy the following condition: 1.5 ≤ R15 / F.

[0037] Furthermore, the sixth and seventh lenses are cemented together to form a cemented lens. The focal length of the cemented lens, F67, and the total focal length of the optical lens, F, satisfy the following condition: -20≤F67 / F≤20.

[0038] Furthermore, the radius of curvature R7 of the first side of the fourth lens and the total optical length TTL of the optical lens satisfy the following condition: 0.1≤R7 / TTL.

[0039] Furthermore, the radius of curvature R9 of the first side of the fifth lens and the total optical length TTL of the optical lens satisfy the following condition: 0.08≤R9 / TTL.

[0040] Furthermore, the radius of curvature R3 of the first side surface of the second lens and the radius of curvature R4 of the second side surface of the second lens satisfy the following condition: 0.3≤R3 / R4≤3.

[0041] Furthermore, the radius of curvature R5 of the first side surface of the third lens and the radius of curvature R6 of the second side surface of the third lens satisfy the following condition: -1.5≤R5 / R6≤1.5.

[0042] According to another aspect of the present invention, an optical lens is provided, comprising: a first lens having negative optical power; a second lens having negative optical power; a third lens having positive optical power; a fourth lens having positive optical power; a fifth lens having positive optical power; a sixth lens having negative optical power; a seventh lens having positive optical power; and an eighth lens having optical power; wherein the focal length F3 of the third lens and the total focal length F of the optical lens satisfy the following condition: F3 / F ≥ 0.001.

[0043] Furthermore, the first side surface of the first lens is convex, and the second side surface of the first lens is concave.

[0044] Furthermore, the first side surface of the second lens is concave, and the second side surface of the second lens is convex.

[0045] Furthermore, the first side surface of the third lens is convex, and the second side surface of the third lens is concave.

[0046] Furthermore, the first side surface of the third lens is convex, and the second side surface of the third lens is also convex.

[0047] Furthermore, the first side surface of the fourth lens is convex, and the second side surface of the fourth lens is also convex.

[0048] Furthermore, the first side surface of the fourth lens is convex, and the second side surface of the fourth lens is concave.

[0049] Furthermore, both the first side surface and the second side surface of the fifth lens are convex surfaces.

[0050] Furthermore, the first side surface of the sixth lens is concave, and the second side surface of the sixth lens is also concave.

[0051] Furthermore, the first side surface of the sixth lens is convex, and the second side surface of the sixth lens is concave.

[0052] Furthermore, the first side surface of the seventh lens is convex, and the second side surface of the seventh lens is also convex.

[0053] Furthermore, the first side surface of the seventh lens is convex, and the second side surface of the seventh lens is concave.

[0054] Furthermore, the eighth lens has positive optical power, the first side surface of the eighth lens is convex, and the second side surface of the eighth lens is concave.

[0055] Furthermore, the eighth lens has negative optical power, the first side surface of the eighth lens is convex, and the second side surface of the eighth lens is concave.

[0056] Furthermore, both the second and eighth lenses are aspherical lenses.

[0057] Furthermore, the sixth and seventh lenses are cemented together to form a cemented lens.

[0058] Furthermore, the fifth, sixth, and seventh lenses are cemented together to form a cemented lens.

[0059] Furthermore, the second side surface of the eighth lens has a recurved point.

[0060] Furthermore, the first side surface and the second side surface of the eighth lens have inflection points.

[0061] Furthermore, the optical lens also includes an aperture stop, which is located between the third lens and the fourth lens.

[0062] Furthermore, the total optical length (TTL) of the optical lens and the total focal length (F) of the optical lens satisfy the following condition: TTL / F ≤ 12.

[0063] Furthermore, the total optical length (TTL) of the optical lens, the image height (H) corresponding to the maximum field of view of the optical lens, and the maximum field of view (FOV) of the optical lens satisfy the following condition: TTL / H / FOV≤0.07.

[0064] Furthermore, the total optical length TTL of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy the following condition: TTL / H / θ≤3.5.

[0065] Furthermore, the image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy the following relationship: |(HF*θ) / (F*θ)|≤2.

[0066] Furthermore, the maximum aperture D of the first side of the first lens corresponding to the maximum aperture of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view FOV of the optical lens satisfy the following condition: D / H / FOV≤0.04.

[0067] Furthermore, the maximum aperture D of the first side of the first lens corresponding to the maximum aperture of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy the following: D / H / θ≤1.9.

[0068] Furthermore, the total optical length TTL of the optical lens, the total focal length F of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy the following condition: 0.8≤TTL / (F*θ)≤7.

[0069] Furthermore, the following conditions must be met between the total focal length F of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view FOV of the optical lens: 200≤(FOV*H) / F.

[0070] Furthermore, the following relationship exists between the total focal length F of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens: 2.2≤(θ*H) / F.

[0071] Furthermore, the radius of curvature R4 of the second side of the second lens and the total focal length F of the optical lens satisfy the following condition: R4 / F≤-0.001.

[0072] Furthermore, the focal length F2 of the second lens and the total focal length F of the optical lens satisfy the following condition: F2 / F≤-10.

[0073] Furthermore, the radius of curvature R7 of the first side of the fourth lens and the total focal length F of the optical lens satisfy the following condition: 0.5≤R7 / F≤8.

[0074] Furthermore, the radius of curvature R9 of the first side surface of the fifth lens and the radius of curvature R12 of the second side surface of the sixth lens satisfy the condition: 0.1 ≤ R9 / R12.

[0075] Furthermore, the radius of curvature R15 of the first side of the eighth lens and the total focal length F of the optical lens satisfy the following condition: 1.5 ≤ R15 / F.

[0076] Furthermore, the sixth and seventh lenses are cemented together to form a cemented lens. The focal length of the cemented lens, F67, and the total focal length of the optical lens, F, satisfy the following condition: -20≤F67 / F≤20.

[0077] Furthermore, the radius of curvature R7 of the first side of the fourth lens and the total optical length TTL of the optical lens satisfy the following condition: 0.1≤R7 / TTL.

[0078] Furthermore, the radius of curvature R9 of the first side of the fifth lens and the total optical length TTL of the optical lens satisfy the following condition: 0.08≤R9 / TTL.

[0079] Furthermore, the radius of curvature R3 of the first side surface of the second lens and the radius of curvature R4 of the second side surface of the second lens satisfy the following condition: 0.3≤R3 / R4≤3.

[0080] Furthermore, the radius of curvature R5 of the first side surface of the third lens and the radius of curvature R6 of the second side surface of the third lens satisfy the following condition: -1.5≤R5 / R6≤1.5.

[0081] According to another aspect of the present invention, an electronic device is provided, comprising the aforementioned optical lens and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

[0082] The above technical solution, by setting the first lens to have negative optical power, has a diverging effect on the light rays passing through it. The light rays exiting through it maintain an upward trend. Under the same field of view, the light rays exiting through the second side of the first lens can provide a larger light receiving surface for the subsequent optical system. By setting the first side of the first lens to be convex and the second side to be concave, the incident angle of light on the first side of the first lens is smaller, allowing the light to smoothly reach the subsequent optical system, which is beneficial for achieving a large field of view. At the same time, the image height corresponding to the same field of view is increased, which helps to receive light rays at a larger angle, reduces distortion, and also facilitates the sliding of water droplets in practical applications, reducing their impact on imaging.

[0083] By setting the second lens to have a negative optical power, it is beneficial to diffuse light. By setting the first side of the second lens to be concave and the second side to be convex, it is beneficial to change the direction of light, allowing light to enter the rear lens smoothly, which helps to improve image quality.

[0084] By setting the third lens to have positive optical power and its first side to be convex, it can better collect the light rays entering after passing through the second lens and smooth the light path, further reducing aberrations and improving image quality. Optionally, the second side of the third lens can be concave, so that the light rays in the edge field of view have a longer optical path after passing through the third lens than the light rays in the center field of view, changing the light path in the edge field of view, defocusing to correct edge field of view aberrations, and achieving high resolution. Of course, the second side of the third lens can also be set to be convex, that is, the third lens can be biconvex, which allows the light rays to converge effectively and smoothly at the end, so that the light rays reach the image plane smoothly.

[0085] By setting the fourth lens to have positive optical power, the light path smoothly transitions into the rear lens, improving resolution. The converging effect of the fourth lens further reduces the rear aperture. Setting the first side of the fourth lens to be convex facilitates a smooth transition of light from the third lens to the fourth lens. Optionally, the second side of the fourth lens can also be convex, making it a biconvex shape, further converging the light and improving resolution. Alternatively, the second side of the fourth lens can be concave, making it a meniscus shape convex towards the first side. This rapidly increases the optical path difference between the edge and center fields of view, helping to correct aberrations in the edge fields and improve image quality.

[0086] By setting the fifth lens to have a positive optical power, it has a converging effect on light. A properly configured optical power for the fifth lens can further reduce aberrations and improve image quality, while also ensuring that the light converges effectively and smoothly at the final point, allowing it to reach the image plane smoothly. By setting both the first and second sides of the fifth lens to be convex, it further converges the light, ensuring a smooth transition of light from the preceding lens to the fifth lens.

[0087] By setting the sixth lens to have a negative optical power, it diverges light. Since there are at least two positive optical power lenses on the first side of the sixth lens, while altering the light trajectory, they also introduce significant aberrations. The negative optical power of the sixth lens effectively corrects various aberrations introduced by the preceding positive lenses, improving image quality. Setting the second side of the sixth lens to be concave facilitates a smooth transition of light. Optionally, the first side of the sixth lens can be concave, causing a significant light reversal upon entering the sixth lens, altering the trend of large-angle light. Alternatively, the first side of the sixth lens can be convex, further converging the light and allowing it to smoothly transition from the fourth and fifth lenses to the sixth lens.

[0088] By setting the seventh lens to have a positive optical power and making its first side convex, it facilitates light convergence. Properly setting the optical power of the seventh lens ensures that the light converges effectively and smoothly at the end, allowing it to reach the eighth lens smoothly and reducing sensitivity. Optionally, the second side of the seventh lens can also be convex to further converge the light, ensuring a smooth transition after passing through the fifth and sixth lenses. Alternatively, the second side of the seventh lens can be concave, which allows the light to enter the rear lenses more gently.

[0089] By setting the first side of the eighth lens to be convex and the second side to be concave, light rays diverge upwards after passing through the second side of the eighth lens. This allows for rapid accumulation of light rays on the image plane, which is beneficial for expanding the imaging range. Simultaneously, the light rays are less deflected before and after passing through the second side of the eighth lens, resulting in less light energy loss and facilitating higher relative illumination. Furthermore, the light path is smooth, and changes in the second side of the eighth lens have minimal impact on the light rays, reducing the sensitivity of the second side of the eighth lens. Optionally, the eighth lens can have positive optical power, converging the light rays and further deflecting them towards the optical axis, reducing the rear aperture. Alternatively, the eighth lens can be set to have negative optical power, diverging the light rays and further expanding the imaging range. Appropriate allocation of optical power helps reduce aberrations and improve optical performance. Attached Figure Description

[0090] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0091] Figure 1 A cross-sectional view of an optical lens according to Example 1 of the present invention is shown;

[0092] Figure 2 A cross-sectional view of the optical lens of Example 2 of the present invention is shown;

[0093] Figure 3 A cross-sectional view of the optical lens of Example 3 of the present invention is shown;

[0094] Figure 4 A cross-sectional view of the optical lens of Example 4 of the present invention is shown;

[0095] Figure 5 A cross-sectional view of the optical lens of Example 5 of the present invention is shown;

[0096] Figure 6 A cross-sectional view of the optical lens of Example Six of the present invention is shown;

[0097] Figure 7 A cross-sectional view of the optical lens of Example Seven of the present invention is shown;

[0098] Figure 8 A cross-sectional view of the optical lens of Example 8 of the present invention is shown;

[0099] Figure 9 A cross-sectional view of the optical lens of Example Nine of the present invention is shown;

[0100] Figure 10 A cross-sectional view of the optical lens of Example 10 of the present invention is shown.

[0101] The above figures include the following reference numerals:

[0102] STO, aperture stop; L1, first lens; S1, first side surface of the first lens; S2, second side surface of the first lens; L2, second lens; S3, first side surface of the second lens; S4, second side surface of the second lens; L3, third lens; S5, first side surface of the third lens; S6, second side surface of the third lens; L4, fourth lens; S7, first side surface of the fourth lens; S8, second side surface of the fourth lens; L5, fifth lens; S9, first side surface of the fifth lens; S10, second side surface of the fifth lens;

[0103] L6, sixth lens; S11, first side surface of the sixth lens; S12, second side surface of the sixth lens; L7, seventh lens; S13, first side surface of the seventh lens; S14, second side surface of the seventh lens; L8, eighth lens; S15, first side surface of the eighth lens; S16, second side surface of the eighth lens; S17, first side surface of the filter; S18, second side surface of the filter; S19, first side surface of the protective glass; S20, second side surface of the protective glass; IMA, imaging plane. Detailed Implementation

[0104] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0105] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0106] In this invention, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0107] 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.

[0108] In the accompanying drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are illustrated by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustrative purposes only and are not drawn strictly to scale.

[0109] In this paper, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the location of the convexity is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the location of the concaveness is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object side is called the first side surface of the lens, and the surface of each lens closest to the image side is called the second side surface of the lens. The surface shape in the paraxial region can be determined according to the judgment method commonly used by those knowledgeable in the field, using the R value (R refers to the radius of curvature of the paraxial region, usually the R value in the lens database of optical software) to determine concavity or convexity. For the first 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 second 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.

[0110] This application generally protects ordinary optical lenses. In the attached drawings, the left side is the object side and the right side is the image side. That is, the first side is the object side and the second side is the image side.

[0111] In an exemplary embodiment, the optical lens provided in this application can be used, for example, as a vehicle-mounted lens. Light rays from the object side can form an image from the image side.

[0112] When the optical lens of this application is applied to a projection lens or a radar transmitting lens, the left side is the imaging side and the right side is the image source side. In an exemplary embodiment, the optical lens provided in this application can be used as, for example, a projection lens or a lidar transmitting lens. In this case, the image side of the optical lens can be the image source side, and the object side can be the imaging side. Light from the image source side can be imaged on the imaging side. The imaging surface of the optical lens is the image source surface.

[0113] In order to solve at least one of the problems of existing optical lenses, such as difficulty in miniaturization, small field of view, poor imaging quality in dark environments, poor temperature performance, severe aberrations, and weak light transmission, the present invention provides an optical lens and an electronic device having the same.

[0114] Example 1

[0115] like Figures 1 to 10 As shown, the optical lens includes 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. The first lens has negative optical power, a first side surface that is convex, and a second side surface that is concave. The second lens has negative optical power, a first side surface that is concave, and a second side surface that is convex. The third lens has positive optical power, a first side surface that is convex. The fourth lens has positive optical power, a first side surface that is convex. The fifth lens has positive optical power, both its first and second sides are convex. The sixth lens has negative optical power, a second side surface that is concave. The seventh lens has positive optical power, a first side surface that is convex. The eighth lens has optical power, a first side surface that is convex, and a second side surface that is concave.

[0116] By setting the first lens to have negative optical power, it has a diverging effect on the light rays passing through the first lens. The light rays emitted through it maintain an upward trend. Under the same field of view, the light rays emitted through the second side of the first lens can give the subsequent optical system a larger light receiving surface.

[0117] By setting the first side of the first lens to be convex and the second side of the first lens to be concave, the incident angle of light on the first side of the first lens is smaller, allowing light to smoothly reach the rear optical system through the first lens. This is beneficial for achieving a large field of view. At the same time, the corresponding image height under the same field of view becomes larger, which helps to receive light at a larger angle and reduce distortion. In practical applications, it can also facilitate the sliding of water droplets and reduce their impact on imaging.

[0118] By setting the second lens to have a negative optical power, it is beneficial to diffuse light. By setting the first side of the second lens to be concave and the second side to be convex, it is beneficial to change the direction of light, allowing light to enter the rear lens smoothly, which helps to improve image quality.

[0119] By setting the third lens to have positive optical power and the first side of the third lens to be convex, it can better collect the light entering after passing through the second lens and smooth the light path, which can further reduce aberrations and improve image quality.

[0120] Optionally, the second side of the third lens is concave. The light rays in the edge field of view will have a longer optical path after passing through the third lens than the light rays in the center field of view, which changes the light trajectory of the edge field of view, defocusing to correct edge field of view aberrations and achieving high resolution.

[0121] Of course, the second side of the third lens can also be set to be convex, that is, the third lens is biconvex, which can make the light converge effectively and smoothly at the end, so that the light reaches the image plane smoothly.

[0122] By setting the fourth lens to have positive optical power, the light rays can smoothly transition into the rear lens, improving resolution. The converging effect of the fourth lens can further reduce the rear aperture. Setting the first side of the fourth lens to be convex facilitates a smoother transition of light rays from the third lens to the fourth lens.

[0123] Optionally, the second side of the fourth lens is convex, meaning the fourth lens is biconvex, which further converges the light rays and improves resolution.

[0124] Of course, the second side of the fourth lens can also be set to be concave, making the fourth lens a crescent shape convex to the first side. This will rapidly increase the optical path difference between the edge field of view and the center field of view, which is beneficial for correcting aberrations in the edge field of view and improving image quality.

[0125] By setting the fifth lens to have positive optical power, which has a converging effect on light, a reasonable setting of the optical power of the fifth lens can further reduce aberrations and improve image quality. At the same time, it can also help the light to converge effectively and smoothly at the end, so that the light reaches the image plane smoothly.

[0126] By setting both the first and second sides of the fifth lens to be convex, the light rays are further converged, allowing the light rays to smoothly transition from the front lens to the fifth lens.

[0127] By setting the sixth lens to have a negative optical power, it has a diverging effect on light. Since there are at least two positive optical power lenses on the first side of the sixth lens, while changing the direction of light, it also introduces significant aberrations. The negative optical power of the sixth lens can effectively correct various aberrations introduced by the positive lenses in front, thus improving image quality. By setting the second side of the sixth lens to be concave, it is beneficial for a smooth transition of light.

[0128] Optionally, the first side of the sixth lens is concave, which causes a significant light reversal when light enters the sixth lens, changing the trend of large-angle light.

[0129] Of course, the first side of the sixth lens can also be set to be convex to further converge the light, so that the light can smoothly transition to the sixth lens after passing through the fourth and fifth lenses.

[0130] By setting the seventh lens to have positive optical power and making its first side convex, it is beneficial for light to converge. By properly setting the optical power of the seventh lens, the light can be effectively and smoothly converged at the end, allowing the light to reach the eighth lens smoothly and reducing sensitivity.

[0131] Optionally, the second side of the seventh lens is convex, which further converges the light rays, allowing the light rays to smoothly transition to the seventh lens after passing through the fifth and sixth lenses.

[0132] Of course, the second side of the seventh lens can also be set to be concave, which is conducive to the smooth entry of light into the rear lens.

[0133] By setting the first side of the eighth lens to be convex and the second side to be concave, the light rays diverge upwards after passing through the second side of the eighth lens. This allows the light rays to accumulate rapidly on the image plane, which helps to expand the imaging range. Simultaneously, the light rays are less deflected before and after passing through the second side of the eighth lens, resulting in less light energy loss and facilitating higher relative illumination. Furthermore, the light path is smooth, and changes in the second side of the eighth lens have a smaller impact on the light rays, thus reducing the sensitivity of the second side of the eighth lens.

[0134] Optionally, the eighth lens has positive optical power and converges light rays, which can further deflect the light rays towards the optical axis and reduce the rear port diameter.

[0135] Of course, the eighth lens can also be configured to have negative optical power, which has a diverging effect on light, thus expanding the imaging range. Reasonable allocation of optical power helps to reduce aberrations and improve optical performance.

[0136] In this embodiment, both the second and eighth lenses are aspherical lenses. This is beneficial for correcting system aberrations, improving resolution, and especially reducing aberrations over a large field of view.

[0137] Optionally, the sixth and seventh lenses are cemented together to form a cemented lens. This allows for a smoother transition of light from the fifth lens to the imaging plane, reducing the overall length of the optical lens. Various aberrations of the optical lens are effectively corrected, improving resolution and optimizing optical performance such as distortion and CRA (prime angle) while maintaining a compact structure. Forming a cemented lens reduces the air gap between the sixth and seventh lenses, further reducing the overall length of the optical lens. It also reduces the number of assembly components between the sixth and seventh lenses, simplifying processes, lowering costs, and reducing tolerance sensitivity issues such as tilting and eccentricity of the lens units during assembly. Simultaneously, it reduces light loss caused by inter-lens reflections, improving illumination, and further reduces field curvature, thus correcting off-axis point aberrations of the system.

[0138] Of course, the fifth, sixth, and seventh lenses can also be cemented together to form a cemented lens. This allows the light rays passing through the fourth lens to smoothly transition to the imaging plane, reducing the overall length of the optical lens. Various aberrations of the optical lens are fully corrected, and resolution can be improved while maintaining a compact structure, optimizing optical performance such as distortion and CRA (prime angle). By forming a cemented lens, the air gap between the fifth, sixth, and seventh lenses is reduced, which helps to reduce the overall length of the optical lens. It also reduces the number of assembly components between the fifth, sixth, and seventh lenses, reducing processes, lowering costs, and reducing tolerance sensitivity issues such as tilting and eccentricity of the lens units during assembly. Simultaneously, it reduces light loss caused by inter-lens reflections, improving illumination, and further reduces field curvature, which can correct off-axis point aberrations of the optical lens.

[0139] Optionally, the second side of the eighth lens has a curvature point, which helps to balance the aberrations of the central field of view and the edge field of view, and improve resolution.

[0140] Of course, it is also possible to set both the first side and the second side of the eighth lens to have inflection points.

[0141] In this embodiment, the optical lens also includes an aperture stop, which is located between the third lens and the fourth lens. This aperture stop helps to effectively converge the light entering the optical lens, reduce the lens aperture at the rear end of the optical lens, and reduce the assembly sensitivity of the optical lens.

[0142] In this embodiment, the total optical length (TTL) of the optical lens and the total focal length (F) of the optical lens satisfy the condition: TTL / F ≤ 12. By limiting TTL / F within a reasonable range and rationally controlling the ratio of the total optical length to the focal length of the optical lens, the length of the optical lens can be effectively limited, which is beneficial for miniaturizing the optical lens. Preferably, TTL / F ≤ 10.

[0143] In this embodiment, the total optical length (TTL) of the optical lens, the image height (H) corresponding to the maximum field of view (FOV) of the optical lens, and the maximum field of view (FOV) of the optical lens satisfy the following condition: TTL / H / FOV ≤ 0.07. By limiting TTL / H / FOV within a reasonable range, the length of the optical lens can be effectively limited under the same imaging plane and image height, which is beneficial for miniaturizing the optical lens. Preferably, TTL / H / FOV ≤ 0.04.

[0144] In this embodiment, the total optical length (TTL) of the optical lens, the image height (H) corresponding to the maximum field of view of the optical lens, and the radian value (θ) corresponding to the maximum field of view of the optical lens satisfy the following condition: TTL / H / θ ≤ 3.5. By limiting TTL / H / θ within a reasonable range, the length of the optical lens can be effectively limited under the same imaging plane and image height, which is beneficial for miniaturizing the optical lens. Preferably, TTL / H / θ ≤ 2.0.

[0145] In this embodiment, the image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy the following condition: |(HF*θ) / (F*θ)|≤2. By limiting |(HF*θ) / (F*θ)| to a reasonable range, it is ensured that the focal length of the optical lens is reasonably increased while keeping the field of view and imaging plane size unchanged, thus highlighting the imaging effect of the central area of ​​the imaging plane and reducing distortion. Preferably, |(HF*θ) / (F*θ)|≤1.2.

[0146] In this embodiment, the maximum aperture D of the first side of the first lens corresponding to the maximum aperture of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view (FOV) of the optical lens satisfy the following relationship: D / H / FOV ≤ 0.04. By limiting D / H / FOV within a reasonable range, the front aperture of the optical lens can be effectively limited under the same maximum image height and maximum field of view, which is beneficial for achieving a small aperture. Preferably, D / H / FOV ≤ 0.02.

[0147] In this embodiment, the maximum aperture D of the first side of the first lens corresponding to the maximum aperture of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy the following condition: D / H / θ ≤ 1.9. By limiting D / H / θ to a reasonable range, the front aperture of the optical lens can be effectively limited under the same maximum image height and maximum field of view, which is beneficial for achieving a small aperture. Preferably, D / H / θ ≤ 1.2.

[0148] In this embodiment, the total optical length (TTL) of the optical lens, the total focal length (F) of the optical lens, and the radian value (θ) corresponding to the maximum field of view of the optical lens satisfy the following condition: 0.8 ≤ TTL / (F*θ) ≤ 7. By limiting TTL / (F*θ) within a reasonable range, the front aperture of the optical lens can be effectively limited under the same maximum image height and maximum field of view, which is beneficial for miniaturizing the optical lens. Preferably, 1.5 ≤ TTL / (F*θ) ≤ 5.

[0149] In this embodiment, the overall focal length F of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view (FOV) of the optical lens satisfy the following condition: 200 ≤ (FOV*H) / F. Limiting (FOV*H) / F within a reasonable range facilitates achieving a large field of view. Simultaneously, with the same imaging plane, a smaller focal length helps to receive light at a wider angle and reduces distortion. Preferably, 210 ≤ (FOV*H) / F.

[0150] In this embodiment, the total focal length F of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy the following condition: 2.2 ≤ (θ*H) / F. Limiting (θ*H) / F within a reasonable range facilitates achieving a large field of view. Simultaneously, with the same imaging plane, a smaller focal length helps to receive light rays at a larger angle and reduces distortion. Preferably, 3 ≤ (θ*H) / F.

[0151] In this embodiment, the focal length F3 of the third lens and the overall focal length F of the optical lens satisfy the condition: F3 / F ≥ 0.001. By limiting F3 / F within a reasonable range and setting the optical power of the third lens appropriately, it is beneficial to ensure a smooth transition of light, prevent excessive bending of light, minimize the increase in light height, maintain a small aperture, and achieve miniaturization. Preferably, F3 / F ≥ 1.

[0152] In this embodiment, the radius of curvature R4 of the second side surface of the second lens and the focal length F of the entire optical lens satisfy the condition: R4 / F ≤ -0.001. By limiting R4 / F to a reasonable range and ensuring that the second side surface of the second lens is convex, it is beneficial to reduce the front-end light rays, thereby lowering the height at which the light enters the third lens and reducing the front-end diameter. Preferably, R4 / F ≤ -0.5.

[0153] In this embodiment, the focal length F2 of the second lens and the overall focal length F of the optical lens satisfy the condition: F2 / F ≤ -10. By limiting F2 / F within a reasonable range, the optical power of the second lens is rationally allocated, and the light entering through the first lens is collected, which helps to smooth the path of the preceding light rays and improves image resolution. At the same time, the light rays exiting through the second side of the first lens can provide a larger light-receiving surface for the subsequent optical system, which is beneficial to the enlargement of the image plane and allows for a larger physical aperture of the stop, resulting in a larger amount of light entering the camera and increasing the brightness of the image plane. Preferably, F2 / F ≤ -20.

[0154] In this embodiment, the radius of curvature R7 of the first side surface of the fourth lens and the total focal length F of the optical lens satisfy the following condition: 0.5 ≤ R7 / F ≤ 8. By limiting R7 / F within a reasonable range and rationally allocating the radius of curvature of the first side surface of the fourth lens, it helps light to enter the rear lens smoothly, thus improving resolution. Preferably, 1 ≤ R7 / F ≤ 7.

[0155] In this embodiment, the radius of curvature R9 of the first side surface of the fifth lens and the radius of curvature R12 of the second side surface of the sixth lens satisfy the condition: 0.1 ≤ R9 / R12. By limiting R9 / R12 within a reasonable range, and through the special shape settings of the first side surface of the fifth lens and the second side surface of the sixth lens, the light is further converged, allowing the light to smoothly transition to the rear lens after passing through the third and fourth lenses. Simultaneously, the optical power of the cemented lens formed by the fifth and sixth lenses directly counteracts the converging effect of the light, further reducing the rear aperture. Preferably, 0.2 ≤ R9 / R12.

[0156] In this embodiment, the radius of curvature R15 of the first side of the eighth lens and the overall focal length F of the optical lens satisfy the condition: 1.5 ≤ R15 / F. By limiting R15 / F within a reasonable range, the radius of curvature of the first side of the eighth lens is relatively large, which helps to ensure smooth light transition and reduce system sensitivity. Preferably, 1.8 ≤ R15 / F.

[0157] In this embodiment, the sixth and seventh lenses are cemented together to form a cemented lens. The focal length F67 of the cemented lens and the total focal length F of the optical lens satisfy the following relationship: -20 ≤ F67 / F ≤ 20. By limiting F67 / F within a reasonable range and rationally allocating the focal length, thermal compensation can be achieved, resulting in good temperature performance. Preferably, -10 ≤ F67 / F ≤ 10.

[0158] In this embodiment, the radius of curvature R7 of the first side surface of the fourth lens and the total optical length TTL of the optical lens satisfy the condition: 0.1 ≤ R7 / TTL. By limiting R7 / TTL within a reasonable range, the radius of curvature of the first side surface of the fourth lens is relatively large, which is beneficial to reducing the incident angle of incident light on the first side surface of the fourth lens and improving image quality. Preferably, 0.22 ≤ R7 / TTL.

[0159] In this embodiment, the radius of curvature R9 of the first side surface of the fifth lens and the total optical length TTL of the optical lens satisfy the condition: 0.08 ≤ R9 / TTL. By limiting R9 / TTL within a reasonable range, the radius of curvature of the first side surface of the fifth lens is relatively large, which is beneficial to reducing the incident angle of incident light on the first side surface of the fifth lens and improving image quality. Preferably, 0.15 ≤ R9 / TTL.

[0160] In this embodiment, the radius of curvature R3 of the first side surface of the second lens and the radius of curvature R4 of the second side surface of the second lens satisfy the following condition: 0.3 ≤ R3 / R4 ≤ 3. By limiting R3 / R4 within a reasonable range, the shape of the second lens is close to a concentric circle, which is beneficial for a smooth transition of light rays and improves image quality. Preferably, 0.45 ≤ R3 / R4 ≤ 2.5.

[0161] In this embodiment, the radius of curvature R5 of the first side surface of the third lens and the radius of curvature R6 of the second side surface of the third lens satisfy the condition: -1.5 ≤ R5 / R6 ≤ 1.5. By limiting R5 / R6 within a reasonable range, the shape of the third lens is biconvex or convex-concave, which, combined with the shape of the second lens, allows for a smooth transition of light path, thus improving image quality. Preferably, -1.3 ≤ R5 / R6 ≤ 1.3.

[0162] Example 2

[0163] like Figures 1 to 10 As shown, the optical lens includes 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. The first lens has negative optical power; the second lens has negative optical power; the third lens has positive optical power; the fourth lens has positive optical power; the fifth lens has positive optical power; the sixth lens has negative optical power; the seventh lens has positive optical power; and the eighth lens has optical power. Among them, the focal length F3 of the third lens and the total focal length F of the optical lens satisfy the following relationship: F3 / F≥0.001.

[0164] By setting the first lens to have a negative optical power, it diverges the light rays passing through it, ensuring the emitted light maintains an upward trajectory. Under the same field of view, the light rays exiting from the second side of the first lens allow the subsequent optical system to have a larger light-receiving surface. Setting the second lens to have a negative optical power further facilitates light divergence. Setting the third lens to have a positive optical power better collects the light rays entering after the second lens and smooths out their trajectory, further reducing aberrations and improving image quality. Setting the fourth lens to have a positive optical power ensures a smooth transition of light rays into the rear lenses, improving resolution. The converging effect of the fourth lens further reduces the rear aperture. Setting the fifth lens to have a positive optical power converges the light rays. Properly setting the optical power of the fifth lens can further reduce aberrations and improve image quality, while also ensuring effective and smooth convergence of the light rays at the final image, allowing them to reach the image plane smoothly.

[0165] By setting the sixth lens to have a negative optical power, it has a diverging effect on light. Since there are at least two positive optical power lenses on the first side of the sixth lens, while changing the light trajectory, it also introduces significant aberrations. The negative optical power of the sixth lens can effectively correct various aberrations introduced by the positive lenses in front, improving image quality. By setting the seventh lens to have a positive optical power, it is beneficial for light convergence. A reasonable setting of the seventh lens's optical power allows the light to converge effectively and smoothly at the end, ensuring the light reaches the eighth lens smoothly and reducing sensitivity. Optionally, the eighth lens has a positive optical power, which also has a converging effect on light, further deflecting the light along the optical axis and reducing the rear aperture. Of course, the eighth lens can also be set to have a negative optical power, which has a diverging effect on light, helping to expand the imaging range. A reasonable allocation of optical power helps reduce aberrations and improve optical performance. By limiting F3 / F within a reasonable range and reasonably setting the optical power of the third lens, a smooth light transition is achieved, preventing excessive bending of the light, minimizing the increase in light height, ensuring a small aperture, and enabling miniaturization.

[0166] Preferably, the focal length F3 of the third lens and the total focal length F of the optical lens satisfy the following condition: F3 / F≥1.

[0167] By setting the first side of the first lens to be convex and the second side of the first lens to be concave, the incident angle of light on the first side of the first lens is smaller, allowing light to smoothly reach the rear optical system through the first lens. This is beneficial for achieving a large field of view. At the same time, the corresponding image height under the same field of view becomes larger, which helps to receive light at a larger angle and reduce distortion. In practical applications, it can also facilitate the sliding of water droplets and reduce their impact on imaging.

[0168] By setting the first side of the second lens to be concave and the second side to be convex, it is beneficial to change the direction of light, allowing light to enter the rear lens smoothly, which helps to improve image quality.

[0169] By setting the first side of the third lens to be convex, the light rays entering after passing through the second lens can be collected better and their trajectory smoothed, further reducing aberrations and improving image quality. Optionally, the second side of the third lens can be concave, allowing light rays from the edge field of view to have a longer optical path than those from the center field of view after passing through the third lens, thus altering the light trajectory of the edge field of view, defocusing to correct edge field of view aberrations, and achieving high resolution. Of course, the second side of the third lens can also be set to be convex, meaning the third lens is biconvex, which allows the light rays to converge effectively and smoothly at the end, ensuring a stable light path to the image plane.

[0170] By setting the first side of the fourth lens to be convex, it facilitates a smooth transition of light from the third lens to the fourth lens. Optionally, the second side of the fourth lens can also be convex, meaning the fourth lens has a biconvex shape, which further converges the light and improves resolution. Alternatively, the second side of the fourth lens can be set to be concave, making the fourth lens a meniscus convex towards the first side. This rapidly increases the optical path difference between the edge and center fields of view, which helps correct aberrations in the edge fields of view and improves image quality.

[0171] By setting both the first and second sides of the fifth lens to be convex, the light rays are further converged, allowing the light rays to smoothly transition from the front lens to the fifth lens.

[0172] By making the second side of the sixth lens concave, a smooth transition of light is facilitated. Optionally, the first side of the sixth lens can be concave, causing a significant light deflection upon entering the sixth lens and altering the trend of large-angle light. Alternatively, the first side of the sixth lens can be convex, further converging the light and ensuring a smooth transition from the fourth and fifth lenses to the sixth lens.

[0173] By making the first side of the seventh lens convex, light convergence is facilitated, allowing the light to reach the eighth lens smoothly and reducing sensitivity. Optionally, the second side of the seventh lens can also be convex to further converge the light, ensuring a smooth transition of light from the fifth and sixth lenses to the seventh lens. Alternatively, the second side of the seventh lens can be concave, allowing light to enter the rear lenses more gently.

[0174] By setting the first side of the eighth lens to be convex and the second side to be concave, the light rays diverge upwards after passing through the second side of the eighth lens. This allows the light rays to accumulate rapidly on the image plane, which helps to expand the imaging range. Simultaneously, the light rays are less deflected before and after passing through the second side of the eighth lens, resulting in less light energy loss and facilitating higher relative illumination. Furthermore, the light path is smooth, and changes in the second side of the eighth lens have a smaller impact on the light rays, thus reducing the sensitivity of the second side of the eighth lens.

[0175] In this embodiment, both the second and eighth lenses are aspherical lenses. This is beneficial for correcting system aberrations, improving resolution, and especially reducing aberrations over a large field of view.

[0176] Optionally, the sixth and seventh lenses are cemented together to form a cemented lens. This allows for a smoother transition of light from the fifth lens to the imaging plane, reducing the overall length of the optical lens. Various aberrations of the optical lens are effectively corrected, improving resolution and optimizing optical performance such as distortion and CRA (prime angle) while maintaining a compact structure. Forming a cemented lens reduces the air gap between the sixth and seventh lenses, further reducing the overall length of the optical lens. It also reduces the number of assembly components between the sixth and seventh lenses, simplifying processes, lowering costs, and reducing tolerance sensitivity issues such as tilting and eccentricity of the lens units during assembly. Simultaneously, it reduces light loss caused by inter-lens reflections, improving illumination, and further reduces field curvature, thus correcting off-axis point aberrations of the system.

[0177] Of course, the fifth, sixth, and seventh lenses can also be cemented together to form a cemented lens. This allows the light rays passing through the fourth lens to smoothly transition to the imaging plane, reducing the overall length of the optical lens. Various aberrations of the optical lens are fully corrected, and resolution can be improved while maintaining a compact structure, optimizing optical performance such as distortion and CRA (prime angle). By forming a cemented lens, the air gap between the fifth, sixth, and seventh lenses is reduced, which helps to reduce the overall length of the optical lens. It also reduces the number of assembly components between the fifth, sixth, and seventh lenses, reducing processes, lowering costs, and reducing tolerance sensitivity issues such as tilting and eccentricity of the lens units during assembly. Simultaneously, it reduces light loss caused by inter-lens reflections, improving illumination, and further reduces field curvature, which can correct off-axis point aberrations of the optical lens.

[0178] Optionally, the second side of the eighth lens has a curvature point, which helps to balance the aberrations of the central field of view and the edge field of view, and improve resolution.

[0179] Of course, it is also possible to set both the first side and the second side of the eighth lens to have inflection points.

[0180] In this embodiment, the optical lens also includes an aperture stop, which is located between the third lens and the fourth lens. This aperture stop helps to effectively converge the light entering the optical lens, reduce the lens aperture at the rear end of the optical lens, and reduce the assembly sensitivity of the optical lens.

[0181] In this embodiment, the total optical length (TTL) of the optical lens and the total focal length (F) of the optical lens satisfy the condition: TTL / F ≤ 12. By limiting TTL / F within a reasonable range and rationally controlling the ratio of the total optical length to the focal length of the optical lens, the length of the optical lens can be effectively limited, which is beneficial for miniaturizing the optical lens. Preferably, TTL / F ≤ 10.

[0182] In this embodiment, the total optical length (TTL) of the optical lens, the image height (H) corresponding to the maximum field of view (FOV) of the optical lens, and the maximum field of view (FOV) of the optical lens satisfy the following condition: TTL / H / FOV ≤ 0.07. By limiting TTL / H / FOV within a reasonable range, the length of the optical lens can be effectively limited under the same imaging plane and image height, which is beneficial for miniaturizing the optical lens. Preferably, TTL / H / FOV ≤ 0.04.

[0183] In this embodiment, the total optical length (TTL) of the optical lens, the image height (H) corresponding to the maximum field of view of the optical lens, and the radian value (θ) corresponding to the maximum field of view of the optical lens satisfy the following condition: TTL / H / θ ≤ 3.5. By limiting TTL / H / θ within a reasonable range, the length of the optical lens can be effectively limited under the same imaging plane and image height, which is beneficial for miniaturizing the optical lens. Preferably, TTL / H / θ ≤ 2.0.

[0184] In this embodiment, the image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy the following condition: |(HF*θ) / (F*θ)|≤2. By limiting |(HF*θ) / (F*θ)| to a reasonable range, it is ensured that the focal length of the optical lens is reasonably increased while keeping the field of view and imaging plane size unchanged, thus highlighting the imaging effect of the central area of ​​the imaging plane and reducing distortion. Preferably, |(HF*θ) / (F*θ)|≤1.2.

[0185] In this embodiment, the maximum aperture D of the first side of the first lens corresponding to the maximum aperture of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view (FOV) of the optical lens satisfy the following relationship: D / H / FOV ≤ 0.04. By limiting D / H / FOV within a reasonable range, the front aperture of the optical lens can be effectively limited under the same maximum image height and maximum field of view, which is beneficial for achieving a small aperture. Preferably, D / H / FOV ≤ 0.02.

[0186] In this embodiment, the maximum aperture D of the first side of the first lens corresponding to the maximum aperture of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy the following condition: D / H / θ ≤ 1.9. By limiting D / H / θ to a reasonable range, the front aperture of the optical lens can be effectively limited under the same maximum image height and maximum field of view, which is beneficial for achieving a small aperture. Preferably, D / H / θ ≤ 1.2.

[0187] In this embodiment, the total optical length (TTL) of the optical lens, the total focal length (F) of the optical lens, and the radian value (θ) corresponding to the maximum field of view of the optical lens satisfy the following condition: 0.8 ≤ TTL / (F*θ) ≤ 7. By limiting TTL / (F*θ) within a reasonable range, the front aperture of the optical lens can be effectively limited under the same maximum image height and maximum field of view, which is beneficial for miniaturizing the optical lens. Preferably, 1.5 ≤ TTL / (F*θ) ≤ 5.

[0188] In this embodiment, the overall focal length F of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view (FOV) of the optical lens satisfy the following condition: 200 ≤ (FOV*H) / F. Limiting (FOV*H) / F within a reasonable range facilitates achieving a large field of view. Simultaneously, with the same imaging plane, a smaller focal length helps to receive light at a wider angle and reduces distortion. Preferably, 210 ≤ (FOV*H) / F.

[0189] In this embodiment, the total focal length F of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy the following condition: 2.2 ≤ (θ*H) / F. Limiting (θ*H) / F within a reasonable range facilitates achieving a large field of view. Simultaneously, with the same imaging plane, a smaller focal length helps to receive light rays at a larger angle and reduces distortion. Preferably, 3 ≤ (θ*H) / F.

[0190] In this embodiment, the radius of curvature R4 of the second side surface of the second lens and the focal length F of the entire optical lens satisfy the condition: R4 / F ≤ -0.001. By limiting R4 / F to a reasonable range and ensuring that the second side surface of the second lens is convex, it is beneficial to reduce the front-end light rays, thereby lowering the height at which the light enters the third lens and reducing the front-end diameter. Preferably, R4 / F ≤ -0.5.

[0191] In this embodiment, the focal length F2 of the second lens and the overall focal length F of the optical lens satisfy the condition: F2 / F ≤ -10. By limiting F2 / F within a reasonable range, the optical power of the second lens is rationally allocated, and the light entering through the first lens is collected, which helps to smooth the path of the preceding light rays and improves image resolution. At the same time, the light rays exiting through the second side of the first lens can provide a larger light-receiving surface for the subsequent optical system, which is beneficial to the enlargement of the image plane and allows for a larger physical aperture of the stop, resulting in a larger amount of light entering the camera and increasing the brightness of the image plane. Preferably, F2 / F ≤ -20.

[0192] In this embodiment, the radius of curvature R7 of the first side surface of the fourth lens and the total focal length F of the optical lens satisfy the following condition: 0.5 ≤ R7 / F ≤ 8. By limiting R7 / F within a reasonable range and rationally allocating the radius of curvature of the first side surface of the fourth lens, it helps light to enter the rear lens smoothly, thus improving resolution. Preferably, 1 ≤ R7 / F ≤ 7.

[0193] In this embodiment, the radius of curvature R9 of the first side surface of the fifth lens and the radius of curvature R12 of the second side surface of the sixth lens satisfy the condition: 0.1 ≤ R9 / R12. By limiting R9 / R12 within a reasonable range, and through the special shape settings of the first side surface of the fifth lens and the second side surface of the sixth lens, the light is further converged, allowing the light to smoothly transition to the rear lens after passing through the third and fourth lenses. Simultaneously, the optical power of the cemented lens formed by the fifth and sixth lenses directly counteracts the converging effect of the light, further reducing the rear aperture. Preferably, 0.2 ≤ R9 / R12.

[0194] In this embodiment, the radius of curvature R15 of the first side of the eighth lens and the overall focal length F of the optical lens satisfy the condition: 1.5 ≤ R15 / F. By limiting R15 / F within a reasonable range, the radius of curvature of the first side of the eighth lens is relatively large, which helps to ensure smooth light transition and reduce system sensitivity. Preferably, 1.8 ≤ R15 / F.

[0195] In this embodiment, the sixth and seventh lenses are cemented together to form a cemented lens. The focal length F67 of the cemented lens and the total focal length F of the optical lens satisfy the following relationship: -20 ≤ F67 / F ≤ 20. By limiting F67 / F within a reasonable range and rationally allocating the focal length, thermal compensation can be achieved, resulting in good temperature performance. Preferably, -10 ≤ F67 / F ≤ 10.

[0196] In this embodiment, the radius of curvature R7 of the first side surface of the fourth lens and the total optical length TTL of the optical lens satisfy the condition: 0.1 ≤ R7 / TTL. By limiting R7 / TTL within a reasonable range, the radius of curvature of the first side surface of the fourth lens is relatively large, which is beneficial to reducing the incident angle of incident light on the first side surface of the fourth lens and improving image quality. Preferably, 0.22 ≤ R7 / TTL.

[0197] In this embodiment, the radius of curvature R9 of the first side surface of the fifth lens and the total optical length TTL of the optical lens satisfy the condition: 0.08 ≤ R9 / TTL. By limiting R9 / TTL within a reasonable range, the radius of curvature of the first side surface of the fifth lens is relatively large, which is beneficial to reducing the incident angle of incident light on the first side surface of the fifth lens and improving image quality. Preferably, 0.15 ≤ R9 / TTL.

[0198] In this embodiment, the radius of curvature R3 of the first side surface of the second lens and the radius of curvature R4 of the second side surface of the second lens satisfy the following condition: 0.3 ≤ R3 / R4 ≤ 3. By limiting R3 / R4 within a reasonable range, the shape of the second lens is close to a concentric circle, which is beneficial for a smooth transition of light rays and improves image quality. Preferably, 0.45 ≤ R3 / R4 ≤ 2.5.

[0199] In this embodiment, the radius of curvature R5 of the first side surface of the third lens and the radius of curvature R6 of the second side surface of the third lens satisfy the condition: -1.5 ≤ R5 / R6 ≤ 1.5. By limiting R5 / R6 within a reasonable range, the shape of the third lens is biconvex or convex-concave, which, combined with the shape of the second lens, allows for a smooth transition of light path, thus improving image quality. Preferably, -1.3 ≤ R5 / R6 ≤ 1.3.

[0200] It should be noted that the total length TTL of the optical lens is the distance from the first side of the first lens to the imaging plane of the optical lens.

[0201] Optionally, the aforementioned optical lens may also include a filter for correcting color deviation and a protective glass for protecting the photosensitive element located on the imaging surface.

[0202] The optical lens in this application may employ multiple lenses, such as the eight lenses mentioned above. In this application, at least one of the mirror surfaces of each lens is an aspherical mirror. An aspherical lens is characterized by a continuously changing curvature from the lens center to the lens periphery. Unlike a spherical lens, which has a constant curvature from the lens center to the lens periphery, an aspherical lens has better curvature radius characteristics, offering advantages in improving distortion aberrations and astigmatism. By using an aspherical lens, aberrations occurring during imaging can be eliminated as much as possible, thereby improving image quality. Specifically, when the imaging quality of the optical lens is the primary concern, all eight lenses may be aspherical lenses.

[0203] In an exemplary embodiment, the first to eighth lenses can all be glass lenses. Optical lenses made of glass can suppress the shift in the back focus of the optical lens due to temperature changes, thereby improving system stability. Simultaneously, using glass avoids lens blurring caused by high and low temperature variations in the operating environment, thus preventing interference with normal lens use. For example, an all-glass optical lens has a wider temperature range, maintaining stable optical performance within the range of -40°C to 105°C. Specifically, when resolution and reliability are of paramount importance, the first to eighth lenses can all be aspherical glass lenses. Of course, in applications with lower temperature stability requirements, the first to eighth lenses in the optical lens can also be made of plastic. Using plastic to make optical lenses can effectively reduce manufacturing costs. Alternatively, the first to eighth lenses in the optical lens can also be made of a combination of plastic and glass.

[0204] This application also provides an electronic device, including the aforementioned optical lens and an imaging element for converting the optical image formed by the optical lens into an electrical signal. The imaging element may be a photocoupled device (CCD) or a complementary metal oxide semiconductor device (CMOS). The electronic device may be a standalone imaging device such as a digital camera, or an imaging module integrated into a mobile electronic device such as a mobile phone. This electronic device is equipped with the optical lens described above.

[0205] However, those skilled in the art will understand that the number of lenses constituting the optical lens can be varied to obtain the various results and advantages described herein without departing from the technical solutions claimed in this application. For example, although an embodiment is described using eight lenses as an example, the optical lens is not limited to including eight lenses. The optical lens may include other numbers of lenses if desired.

[0206] The following description, with reference to the accompanying drawings, further illustrates examples of specific surface shapes and parameters of optical lenses applicable to the above embodiments.

[0207] Example 1

[0208] like Figure 1 As shown, the optical lens, from the object side to the image side, includes, in sequence, a first lens L1, a second lens L2, a third lens L3, an aperture stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a filter, a protective glass, and an imaging surface IMA.

[0209] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has negative optical power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 has positive optical power, its first side surface S5 is convex, and its second side surface S6 is concave. The fourth lens L4 has positive optical power, its first side surface S7 is convex, and its second side surface S8 is convex. The fifth lens L5 has positive optical power, its first side surface S9 is convex, and its second side surface S10 is convex. The sixth lens L6 has negative optical power, its first side surface S11 is concave, and its second side surface S12 is concave. The seventh lens L7 has positive optical power, its first side surface S13 is convex, and its second side surface S14 is convex. The eighth lens L8 has negative optical power. Its first side surface S15 is convex, and its second side surface S16 is concave. The filter has a first side surface S17 and a second side surface S18. The protective glass has a first side surface S19 and a second side surface S20. Light from the object passes sequentially through surfaces S1 to S20 and is finally imaged onto the imaging plane IMA.

[0210] In this example, the focal length F of the optical lens is 4.3262mm, the total length TTL of the optical lens is 32.7991mm, and the maximum field of view (FOV) of the optical lens is 120°.

[0211] In this example, the sixth and seventh lenses are cemented lenses. Therefore, the second side surface of the sixth lens and the first side surface of the seventh lens have different surface shapes even though they have the same radius of curvature. Thus, the second side surface S12 of the sixth lens is concave, and the first side surface S13 of the seventh lens is convex.

[0212] In this example, both the first side surface and the second side surface of the eighth lens have inflection points.

[0213] Table 1 shows the basic structural parameters of the optical lens in Example 1, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity represents infinity.

[0214]

[0215]

[0216] Table 1

[0217] In this example, both the second and eighth lenses are aspherical lenses. The surface shape of each aspherical lens can be defined using, but is not limited to, the following aspherical formula:

[0218]

[0219] Where x is the distance vector from the vertex of the aspherical surface along the optical axis at a height of h; 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; and A is the higher-order coefficient. Table 2 below shows the conic coefficient k and the higher-order coefficients A (4th-order coefficient), B (6th-order coefficient), C (8th-order coefficient), D (10th-order coefficient), E (12th-order coefficient), F (14th-order coefficient), and G (16th-order coefficient) that can be used for the aspherical lens surface in this example.

[0220] Surf K A B C D E F G 3 -1.1557 -4.4148E-04 2.3837E-05 -2.6014E-06 1.6346E-07 -2.4037E-09 -2.4037E-09 -2.4037E-09 4 -5.4153 -1.2585E-03 4.3133E-05 -1.9000E-06 5.3688E-08 1.4984E-10 1.4984E-10 1.4984E-10 15 -36.2110 -2.1050E-03 -2.0951E-05 -2.4252E-06 2.5193E-07 -1.1169E-08 -1.1169E-08 -1.1169E-08 16 -34.1160 -7.8032E-04 -1.1438E-04 1.4498E-05 -1.0054E-06 3.9096E-08 3.9096E-08 3.9096E-08

[0221] Table 2

[0222] Example 2

[0223] like Figure 2 As shown, the optical lens, from the object side to the image side, includes, in sequence, a first lens L1, a second lens L2, a third lens L3, an aperture stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a filter, a protective glass, and an imaging surface IMA.

[0224] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has negative optical power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 has positive optical power, its first side surface S5 is convex, and its second side surface S6 is concave. The fourth lens L4 has positive optical power, its first side surface S7 is convex, and its second side surface S8 is convex. The fifth lens L5 has positive optical power, its first side surface S9 is convex, and its second side surface S10 is convex. The sixth lens L6 has negative optical power, its first side surface S11 is concave, and its second side surface S12 is concave. The seventh lens L7 has positive optical power, its first side surface S13 is convex, and its second side surface S14 is convex. The eighth lens L8 has negative optical power. Its first side surface S15 is convex, and its second side surface S16 is concave. The filter has a first side surface S17 and a second side surface S18. The protective glass has a first side surface S19 and a second side surface S20. Light from the object passes sequentially through surfaces S1 to S20 and is finally imaged onto the imaging plane IMA.

[0225] In this example, the focal length F of the optical lens is 4.6772mm, the total length TTL of the optical lens is 32.7991mm, and the maximum field of view FOV of the optical lens is 120°.

[0226] In this example, the sixth and seventh lenses are cemented lenses. Therefore, the second side surface of the sixth lens and the first side surface of the seventh lens have different surface shapes even though they have the same radius of curvature. Thus, the second side surface S12 of the sixth lens is concave, and the first side surface S13 of the seventh lens is convex.

[0227] In this example, both the first side surface and the second side surface of the eighth lens have inflection points.

[0228] Table 3 shows the basic structural parameters of the optical lens in Example 2, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity represents infinity.

[0229] Surf Radius Thickness Nd Vd 1 28.8850 1.3986 1.83 42.73 2 5.0257 5.8484 3 -6.5372 3.5676 1.51 56.22 4 -8.0930 0.1000 5 13.5919 3.4211 1.80 46.57 6 39.0242 1.6530 STO Infinity -0.1092 7 14.3003 2.6645 1.80 46.57 8 -60.1113 0.7550 9 8.6323 3.2088 1.52 64.21 10 -13.1787 0.0940 11 -12.8224 0.9964 1.92 20.88 12 / 13 8.8615 2.8512 1.62 63.41 14 -17.4005 0.1765 15 21.3619 2.4472 1.54 56.11 16 16.5281 0.7413 17 Infinity 0.5000 1.52 64.21 18 Infinity 1.5857 19 Infinity 0.4000 1.52 64.21 20 Infinity 0.4991 IMA / /

[0230] Table 3

[0231] In this example, both the second and eighth lenses are aspherical lenses. Table 4 shows the conic coefficient k and the coefficients of each higher-order term that can be used for the aspherical lens surfaces in this example. The surface shape of each aspherical lens can be defined using, but is not limited to, the formula (1) in Example 1.

[0232] Surf K A B C D E F G 3 -1.1673 -4.9053E-04 2.3837E-05 -2.3413E-06 1.6346E-07 -2.4037E-09 -1.7150E-10 6.1083E-12 4 -5.4153 -1.2585E-03 4.3133E-05 -1.9000E-06 5.3688E-08 1.4984E-10 -6.0350E-11 1.2014E-12 15 -36.2110 -2.1262E-03 -2.3279E-05 -2.4252E-06 2.5448E-07 -1.1169E-08 6.0796E-10 -1.4798E-11 16 -34.4610 -7.8032E-04 -1.1438E-04 1.4498E-05 -1.0054E-06 3.9096E-08 -3.9888E-10 -8.1850E-12

[0233] Table 4

[0234] Example 3

[0235] like Figure 3 As shown, the optical lens, from the object side to the image side, includes, in sequence, a first lens L1, a second lens L2, a third lens L3, an aperture stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a filter, a protective glass, and an imaging surface IMA.

[0236] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has negative optical power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 has positive optical power, its first side surface S5 is convex, and its second side surface S6 is concave. The fourth lens L4 has positive optical power, its first side surface S7 is convex, and its second side surface S8 is concave. The fifth lens L5 has positive optical power, its first side surface S9 is convex, and its second side surface S10 is convex. The sixth lens L6 has negative optical power, its first side surface S11 is concave, and its second side surface S12 is concave. The seventh lens L7 has positive optical power, its first side surface S13 is convex, and its second side surface S14 is convex. The eighth lens L8 has positive optical power. Its first side surface S15 is convex, and its second side surface S16 is concave. The filter has a first side surface S17 and a second side surface S18. The protective glass has a first side surface S19 and a second side surface S20. Light from the object passes sequentially through surfaces S1 to S20 and is finally imaged onto the imaging plane IMA.

[0237] In this example, the focal length F of the optical lens is 4.7162mm, the total length TTL of the optical lens is 32.7994mm, and the maximum field of view FOV of the optical lens is 120°.

[0238] In this example, the sixth and seventh lenses are cemented lenses. Therefore, the second side surface of the sixth lens and the first side surface of the seventh lens have different surface shapes even though they have the same radius of curvature. Thus, the second side surface S12 of the sixth lens is concave, and the first side surface S13 of the seventh lens is convex.

[0239] In this example, both the first side surface and the second side surface of the eighth lens have inflection points.

[0240] Table 5 shows the basic structural parameters of the optical lens in Example 3, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity represents infinity.

[0241]

[0242]

[0243] Table 5

[0244] In this example, both the second and eighth lenses are aspherical lenses. Table 6 shows the conic coefficient k and the coefficients of each higher-order term that can be used for the aspherical lens surfaces in this example. The surface shape of each aspherical lens can be defined using, but is not limited to, the formula (1) in Example 1.

[0245] Surf K A B C D E F G 3 -1.0442 -5.3646E-04 2.2735E-05 -2.6579E-06 1.5089E-07 -2.1872E-09 -1.0902E-10 3.2645E-12 4 -4.2746 -1.1486E-03 4.0664E-05 -2.1481E-06 6.0433E-08 4.8874E-10 -6.8249E-11 1.0543E-12 15 -16.7070 -2.3282E-03 -3.7853E-05 -4.6057E-06 1.5634E-07 -3.4042E-09 1.4970E-09 -5.5739E-11 16 -44.3980 -1.0152E-03 -1.5598E-04 1.4334E-05 -9.4522E-07 4.0511E-08 -4.6603E-10 -7.4985E-12

[0246] Table 6

[0247] Example 4

[0248] like Figure 4 As shown, the optical lens, from the object side to the image side, includes, in sequence, a first lens L1, a second lens L2, a third lens L3, an aperture stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a filter, a protective glass, and an imaging surface IMA.

[0249] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has negative optical power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 has positive optical power, its first side surface S5 is convex, and its second side surface S6 is concave. The fourth lens L4 has positive optical power, its first side surface S7 is convex, and its second side surface S8 is concave. The fifth lens L5 has positive optical power, its first side surface S9 is convex, and its second side surface S10 is convex. The sixth lens L6 has negative optical power, its first side surface S11 is concave, and its second side surface S12 is concave. The seventh lens L7 has positive optical power, its first side surface S13 is convex, and its second side surface S14 is convex. The eighth lens L8 has positive optical power. Its first side surface S15 is convex, and its second side surface S16 is concave. The filter has a first side surface S17 and a second side surface S18. The protective glass has a first side surface S19 and a second side surface S20. Light from the object passes sequentially through surfaces S1 to S20 and is finally imaged onto the imaging plane IMA.

[0250] In this example, the focal length F of the optical lens is 4.3032mm, the total length TTL of the optical lens is 32.7994mm, and the maximum field of view FOV of the optical lens is 120°.

[0251] In this example, the sixth and seventh lenses are cemented lenses. Therefore, the second side surface of the sixth lens and the first side surface of the seventh lens have different surface shapes even though they have the same radius of curvature. Thus, the second side surface S12 of the sixth lens is concave, and the first side surface S13 of the seventh lens is convex.

[0252] In this example, both the first side surface and the second side surface of the eighth lens have inflection points.

[0253] Table 7 shows the basic structural parameters of the optical lens in Example 4, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity represents infinity.

[0254] Surf Radius Thickness Nd Vd 1 29.7700 1.2110 1.83 42.73 2 5.2648 5.2184 3 -6.5405 3.9399 1.51 56.22 4 -8.2292 0.1000 5 13.8131 3.4211 1.80 46.57 6 48.8252 3.5972 STO Infinity -0.1092 7 9.8988 1.7042 1.80 46.57 8 220.7963 0.2548 9 9.7010 3.5000 1.52 64.21 10 -12.4837 0.0657 11 -12.8624 0.7931 1.92 20.88 12 / 13 9.7762 2.4911 1.62 63.41 14 -33.5030 0.8260 15 13.2079 2.1609 1.54 56.11 16 15.7549 0.7413 17 Infinity 0.5000 1.52 64.21 18 Infinity 1.4847 19 Infinity 0.4000 1.52 64.21 20 Infinity 0.4991 IMA / /

[0255] Table 7

[0256] In this example, both the second and eighth lenses are aspherical lenses. Table 8 shows the conic coefficient k and the coefficients of each higher-order term that can be used for the aspherical lens surfaces in this example. The surface shape of each aspherical lens can be defined using, but is not limited to, the formula (1) in Example 1.

[0257] Surf K A B C D E F G 3 -1.0442 -5.3646E-04 2.2735E-05 -2.6579E-06 1.5089E-07 -2.1872E-09 -1.0902E-10 3.2645E-12 4 -4.7496 -1.1486E-03 4.0664E-05 -2.1481E-06 6.0433E-08 4.8874E-10 -6.8249E-11 1.0543E-12 15 -15.0370 -2.3282E-03 -3.7853E-05 -4.6057E-06 1.5634E-07 -3.4042E-09 1.4970E-09 -5.5739E-11 16 -39.9580 -1.0152E-03 -1.5598E-04 1.4334E-05 -9.4522E-07 4.0511E-08 -4.6603E-10 -7.4985E-12

[0258] Table 8

[0259] Example 5

[0260] like Figure 5 As shown, the optical lens, from the object side to the image side, includes, in sequence, a first lens L1, a second lens L2, a third lens L3, an aperture stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a filter, a protective glass, and an imaging surface IMA.

[0261] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has negative optical power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 has positive optical power, its first side surface S5 is convex, and its second side surface S6 is convex. The fourth lens L4 has positive optical power, its first side surface S7 is convex, and its second side surface S8 is convex. The fifth lens L5 has positive optical power, its first side surface S9 is convex, and its second side surface S10 is convex. The sixth lens L6 has negative optical power, its first side surface S11 is concave, and its second side surface S12 is concave. The seventh lens L7 has positive optical power, its first side surface S13 is convex, and its second side surface S14 is convex. The eighth lens L8 has negative optical power. Its first side surface S15 is convex, and its second side surface S16 is concave. The filter has a first side surface S17 and a second side surface S18. The protective glass has a first side surface S19 and a second side surface S20. Light from the object passes sequentially through surfaces S1 to S20 and is finally imaged onto the imaging plane IMA.

[0262] In this example, the focal length F of the optical lens is 4.4178mm, the total length TTL of the optical lens is 32.6793mm, and the maximum field of view FOV of the optical lens is 120°.

[0263] In this example, the sixth and seventh lenses are cemented lenses. Therefore, the second side surface of the sixth lens and the first side surface of the seventh lens have different surface shapes even though they have the same radius of curvature. Thus, the second side surface S12 of the sixth lens is concave, and the first side surface S13 of the seventh lens is convex.

[0264] In this example, both the first side surface and the second side surface of the eighth lens have inflection points.

[0265] Table 9 shows the basic structural parameters of the optical lens in Example 5, where the radius of curvature (Radius) and thickness / distance are in millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity represents infinity.

[0266]

[0267]

[0268] Table 9

[0269] In this example, both the second and eighth lenses are aspherical lenses. Table 10 shows the conic coefficient k and the coefficients of each higher order term that can be used for the aspherical lens surface in this example. The surface shape of each aspherical lens can be defined using, but is not limited to, the formula (1) in Example 1.

[0270] Surf K A B C D E F G 3 -1.2348 -4.9983E-04 2.4277E-05 -2.7475E-06 1.5646E-07 -1.9498E-09 -1.3078E-10 3.8792E-12 4 -6.5870 -1.0903E-03 4.1383E-05 -2.0055E-06 5.9094E-08 3.0628E-10 -6.6033E-11 1.1377E-12 15 -4.3192 -2.6056E-03 -6.1858E-05 -2.3006E-06 2.2018E-07 -1.4972E-08 6.7330E-10 4.4540E-12 16 -6.0109 -1.1024E-03 -1.5725E-04 1.4396E-05 -9.4466E-07 3.9892E-08 -5.3208E-10 -4.0364E-12

[0271] Table 10

[0272] Example 6

[0273] like Figure 6 As shown, the optical lens, from the object side to the image side, includes, in sequence, a first lens L1, a second lens L2, a third lens L3, an aperture stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a filter, a protective glass, and an imaging surface IMA.

[0274] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has negative optical power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 has positive optical power, its first side surface S5 is convex, and its second side surface S6 is convex. The fourth lens L4 has positive optical power, its first side surface S7 is convex, and its second side surface S8 is convex. The fifth lens L5 has positive optical power, its first side surface S9 is convex, and its second side surface S10 is convex. The sixth lens L6 has negative optical power, its first side surface S11 is concave, and its second side surface S12 is concave. The seventh lens L7 has positive optical power, its first side surface S13 is convex, and its second side surface S14 is convex. The eighth lens L8 has negative optical power. Its first side surface S15 is convex, and its second side surface S16 is concave. The filter has a first side surface S17 and a second side surface S18. The protective glass has a first side surface S19 and a second side surface S20. Light from the object passes sequentially through surfaces S1 to S20 and is finally imaged onto the imaging plane IMA.

[0275] In this example, the focal length F of the optical lens is 4.4991mm, the total length TTL of the optical lens is 32.6793mm, and the maximum field of view FOV of the optical lens is 120°.

[0276] In this example, the sixth and seventh lenses are cemented lenses. Therefore, the second side surface of the sixth lens and the first side surface of the seventh lens have different surface shapes even though they have the same radius of curvature. Thus, the second side surface S12 of the sixth lens is concave, and the first side surface S13 of the seventh lens is convex.

[0277] In this example, both the first side surface and the second side surface of the eighth lens have inflection points.

[0278] Table 11 shows the basic structural parameters of the optical lens in Example 6, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity represents infinity.

[0279] Surf Radius Thickness Nd Vd 1 36.5114 1.3986 1.83 42.73 2 5.3064 4.7693 3 -7.7801 3.6389 1.51 56.22 4 -9.4955 0.1000 5 23.2359 3.4211 1.80 46.57 6 -52.0915 4.3713 STO Infinity -0.1870 7 12.8046 1.9305 1.80 46.57 8 -63.9429 0.3063 9 10.2634 3.1361 1.52 64.21 10 -13.0858 0.0779 11 -16.4132 0.9964 1.92 20.88 12 / 13 8.6649 2.8512 1.62 63.41 14 -47.4875 0.6168 15 9.1566 1.5613 1.54 56.11 16 8.3319 0.7413 17 Infinity 0.5000 1.52 64.21 18 Infinity 1.6700 19 Infinity 0.4000 1.52 64.21 20 Infinity 0.3793 IMA / /

[0280] Table 11

[0281] In this example, both the second and eighth lenses are aspherical lenses. Table 12 shows the conic coefficient k and the coefficients of each higher-order term that can be used for the aspherical lens surface in this example. The surface shape of each aspherical lens can be defined using, but is not limited to, the formula (1) in Example 1.

[0282]

[0283]

[0284] Table 12

[0285] Example 7

[0286] like Figure 7 As shown, the optical lens, from the object side to the image side, includes, in sequence, a first lens L1, a second lens L2, a third lens L3, an aperture stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a filter, a protective glass, and an imaging surface IMA.

[0287] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has negative optical power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 has positive optical power, its first side surface S5 is convex, and its second side surface S6 is convex. The fourth lens L4 has positive optical power, its first side surface S7 is convex, and its second side surface S8 is convex. The fifth lens L5 has positive optical power, its first side surface S9 is convex, and its second side surface S10 is convex. The sixth lens L6 has negative optical power, its first side surface S11 is convex, and its second side surface S12 is concave. The seventh lens L7 has positive optical power, its first side surface S13 is convex, and its second side surface S14 is concave. The eighth lens L8 has positive optical power. Its first side surface S15 is convex, and its second side surface S16 is concave. The filter has a first side surface S17 and a second side surface S18. The protective glass has a first side surface S19 and a second side surface S20. Light from the object passes sequentially through surfaces S1 to S20 and is finally imaged onto the imaging plane IMA.

[0288] In this example, the focal length F of the optical lens is 4.8896mm, the total length TTL of the optical lens is 32.6mm, and the maximum field of view FOV of the optical lens is 120°.

[0289] In this example, the sixth and seventh lenses are cemented lenses. Therefore, the second side surface of the sixth lens and the first side surface of the seventh lens have different surface shapes even though they have the same radius of curvature. Thus, the second side surface S12 of the sixth lens is concave, and the first side surface S13 of the seventh lens is convex.

[0290] In this example, both the first side surface and the second side surface of the eighth lens have inflection points.

[0291] Table 13 shows the basic structural parameters of the optical lens in Example 7, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity represents infinity.

[0292]

[0293]

[0294] Table 13

[0295] In this example, both the second and eighth lenses are aspherical lenses. Table 14 shows the conic coefficient k and the coefficients of each higher-order term that can be used for the aspherical lens surface in this example. The surface shape of each aspherical lens can be defined using, but is not limited to, the formula (1) in Example 1.

[0296] Surf K A B C D E F G 3 -0.8350 -6.5297E-04 1.3232E-05 -1.9634E-06 9.8362E-08 9.7916E-11 -9.5028E-11 -2.2592E-12 4 -5.0961 -1.7333E-03 5.7285E-05 -2.1170E-06 4.6706E-08 7.8183E-11 -2.7498E-11 4.9348E-14 15 26.8080 -2.7370E-03 -8.1770E-05 -1.7063E-06 1.5954E-07 -1.5690E-08 5.3893E-10 -6.3760E-12 16 -94.2450 -1.4308E-03 -1.4433E-04 1.3348E-05 -8.6171E-07 3.4397E-08 -6.9574E-10 6.0097E-12

[0297] Table 14

[0298] Example 8

[0299] like Figure 8 As shown, the optical lens, from the object side to the image side, includes, in sequence, a first lens L1, a second lens L2, a third lens L3, an aperture stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a filter, a protective glass, and an imaging surface IMA.

[0300] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has negative optical power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 has positive optical power, its first side surface S5 is convex, and its second side surface S6 is concave. The fourth lens L4 has positive optical power, its first side surface S7 is convex, and its second side surface S8 is convex. The fifth lens L5 has positive optical power, its first side surface S9 is convex, and its second side surface S10 is convex. The sixth lens L6 has negative optical power, its first side surface S11 is concave, and its second side surface S12 is concave. The seventh lens L7 has positive optical power, its first side surface S13 is convex, and its second side surface S14 is convex. The eighth lens L8 has positive optical power. Its first side surface S15 is convex, and its second side surface S16 is concave. The filter has a first side surface S17 and a second side surface S18. The protective glass has a first side surface S19 and a second side surface S20. Light from the object passes sequentially through surfaces S1 to S20 and is finally imaged onto the imaging plane IMA.

[0301] In this example, the focal length F of the optical lens is 4.6211mm, the total length TTL of the optical lens is 32.6mm, and the maximum field of view FOV of the optical lens is 120°.

[0302] In this example, the sixth and seventh lenses are cemented lenses. Therefore, the second side surface of the sixth lens and the first side surface of the seventh lens have different surface shapes even though they have the same radius of curvature. Thus, the second side surface S12 of the sixth lens is concave, and the first side surface S13 of the seventh lens is convex.

[0303] In this example, the second side of the eighth lens has a point of inflection.

[0304] Table 15 shows the basic structural parameters of the optical lens in Example 8, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity represents infinity.

[0305] Surf Radius Thickness Nd Vd 1 27.2846 0.7500 1.83 42.73 2 5.3605 6.2591 3 -5.8676 3.4759 1.54 56.11 4 -7.3513 0.1000 5 37.2177 2.0464 1.80 46.57 6 -85.2017 0.1000 STO Infinity 1.8534 7 22.5108 3.2297 1.80 46.57 8 -49.9528 0.1000 9 8.4281 2.7191 1.52 64.21 10 -132.2214 1.1156 11 38.1016 0.9500 1.92 20.88 12 / 13 4.9182 3.7538 1.62 63.41 14 275.7647 0.7057 15 20.5118 1.8000 1.54 56.11 16 84.6576 0.7413 17 Infinity 0.5000 1.52 64.21 18 Infinity 1.5000 19 Infinity 0.4000 1.52 64.21 20 Infinity 0.5000 IMA / /

[0306] Table 15

[0307] In this example, both the second and eighth lenses are aspherical lenses. Table 16 shows the conic coefficient k and the coefficients of each higher-order term that can be used for the aspherical lens surface in this example. The surface shape of each aspherical lens can be defined using, but is not limited to, the formula (1) in Example 1.

[0308]

[0309] Table 16

[0310] Example 9

[0311] like Figure 9 As shown, the optical lens, from the object side to the image side, includes, in sequence, a first lens L1, a second lens L2, a third lens L3, an aperture stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a filter, a protective glass, and an imaging surface IMA.

[0312] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has negative optical power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 has positive optical power, its first side surface S5 is convex, and its second side surface S6 is concave. The fourth lens L4 has positive optical power, its first side surface S7 is convex, and its second side surface S8 is convex. The fifth lens L5 has positive optical power, its first side surface S9 is convex, and its second side surface S10 is convex. The sixth lens L6 has negative optical power, its first side surface S11 is concave, and its second side surface S12 is concave. The seventh lens L7 has positive optical power, its first side surface S13 is convex, and its second side surface S14 is convex. The eighth lens L8 has positive optical power. Its first side surface S15 is convex, and its second side surface S16 is concave. The filter has a first side surface S17 and a second side surface S18. The protective glass has a first side surface S19 and a second side surface S20. Light from the object passes sequentially through surfaces S1 to S20 and is finally imaged onto the imaging plane IMA.

[0313] In this example, the focal length F of the optical lens is 4.7427mm, the total length TTL of the optical lens is 32.8001mm, and the maximum field of view FOV of the optical lens is 120°.

[0314] In this example, the fifth, sixth, and seventh lenses are cemented lenses. Therefore, even with the same radius of curvature, the second side surface of the fifth lens and the first side surface of the sixth lens, as well as the second side surface of the sixth lens and the first side surface of the seventh lens, have different surface shapes. Thus, the second side surface S10 of the fifth lens is convex, the first side surface S11 of the sixth lens is concave, the second side surface S12 of the sixth lens is concave, and the first side surface S13 of the seventh lens is convex.

[0315] In this example, the first side surface of the eighth lens and the second side surface of the eighth lens have inflection points.

[0316] Table 17 shows the basic structural parameters of the optical lens of Example 9, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity represents infinity.

[0317]

[0318]

[0319] Table 17

[0320] In this example, both the second and eighth lenses are aspherical lenses. Table 18 shows the conic coefficient k and the coefficients of each higher-order term that can be used for the aspherical lens surface in this example. The surface shape of each aspherical lens can be defined using, but is not limited to, the formula (1) in Example 1.

[0321] Surf K A B C D E F G 3 -1.3124 -4.6786E-04 2.1910E-05 -2.5118E-06 1.3766E-07 -2.4444E-09 -1.0936E-10 3.6372E-12 4 -6.4734 -1.1032E-03 4.2370E-05 -2.0527E-06 5.9439E-08 3.8599E-10 -7.1236E-11 1.2293E-12 14 -11.0880 -2.4543E-03 -3.1657E-05 -4.5090E-06 9.4154E-08 -3.1057E-09 1.9430E-09 -7.3375E-11 15 -27.7930 -1.1339E-03 -1.5779E-04 1.3452E-05 -9.3416E-07 4.2846E-08 -4.7020E-10 -1.0361E-11

[0322] Table 18

[0323] Example 10

[0324] like Figure 10 As shown, the optical lens, from the object side to the image side, includes, in sequence, a first lens L1, a second lens L2, a third lens L3, an aperture stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a filter, a protective glass, and an imaging surface IMA.

[0325] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has negative optical power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 has positive optical power, its first side surface S5 is convex, and its second side surface S6 is concave. The fourth lens L4 has positive optical power, its first side surface S7 is convex, and its second side surface S8 is convex. The fifth lens L5 has positive optical power, its first side surface S9 is convex, and its second side surface S10 is convex. The sixth lens L6 has negative optical power, its first side surface S11 is concave, and its second side surface S12 is concave. The seventh lens L7 has positive optical power, its first side surface S13 is convex, and its second side surface S14 is convex. The eighth lens L8 has positive optical power. Its first side surface S15 is convex, and its second side surface S16 is concave. The filter has a first side surface S17 and a second side surface S18. The protective glass has a first side surface S19 and a second side surface S20. Light from the object passes sequentially through surfaces S1 to S20 and is finally imaged onto the imaging plane IMA.

[0326] In this example, the focal length F of the optical lens is 5.4386mm, the total length TTL of the optical lens is 32.8001mm, and the maximum field of view FOV of the optical lens is 120°.

[0327] In this example, the fifth, sixth, and seventh lenses are cemented lenses. Therefore, even with the same radius of curvature, the second side surface of the fifth lens and the first side surface of the sixth lens, as well as the second side surface of the sixth lens and the first side surface of the seventh lens, have different surface shapes. Thus, the second side surface S10 of the fifth lens is convex, the first side surface S11 of the sixth lens is concave, the second side surface S12 of the sixth lens is concave, and the first side surface S13 of the seventh lens is convex.

[0328] In this example, the first side surface of the eighth lens and the second side surface of the eighth lens have inflection points.

[0329] Table 19 shows the basic structural parameters of the optical lens in Example 10, where the radius of curvature (Radius) and thickness / distance are in millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity represents infinity.

[0330] Surf Radius Thickness Nd Vd 1 29.5422 1.3986 1.83 42.73 2 5.2110 5.0570 3 -6.6503 4.5857 1.51 56.22 4 -8.9663 0.1000 5 12.9941 3.4211 1.80 46.57 6 48.7664 3.4778 STO Infinity -0.1092 7 11.3084 1.8705 1.80 46.57 8 -300.1935 0.2548 9 14.4341 3.0481 1.52 64.21 10 / 11 -12.8349 0.6952 1.92 20.88 12 / 13 9.5075 1.8491 1.62 63.41 14 -29.7681 1.5633 15 12.7541 1.7245 1.54 56.11 16 13.6340 0.7413 17 Infinity 0.5000 1.52 64.21 18 Infinity 1.9077 19 Infinity 0.4000 1.52 64.21 20 Infinity 0.3144 IMA / /

[0331] Table 19

[0332] In this example, both the second and eighth lenses are aspherical lenses. Table 20 shows the conic coefficient k and the coefficients of each higher order term that can be used for the aspherical lens surface in this example. The surface shape of each aspherical lens can be defined using, but is not limited to, the formula (1) in Example 1.

[0333] Surf K A B C D E F G 3 -1.3124 -4.6786E-04 2.1910E-05 -2.5118E-06 1.5296E-07 -2.4444E-09 -1.0936E-10 3.6372E-12 4 -6.5388 -1.1032E-03 4.2370E-05 -2.0527E-06 5.9439E-08 3.8599E-10 -7.1236E-11 1.2293E-12 14 -11.0880 -2.4543E-03 -3.5174E-05 -4.5090E-06 9.4154E-08 -3.1057E-09 1.9430E-09 -7.3375E-11 15 -30.8810 -1.1339E-03 -1.5779E-04 1.3452E-05 -9.3416E-07 4.2846E-08 -4.7020E-10 -1.0361E-11

[0334] Table 20

[0335] In summary, Examples 1 through 2 completely satisfy the relationships shown in Table 21.

[0336] Conditional / Example 1 2 3 4 5 6 7 8 9 10 TTL / F 7.5815 7.0126 6.9546 7.6221 7.3972 7.2635 6.6672 7.0546 6.9159 6.0310 TTL / H / FOV 0.0285 0.0284 0.0281 0.0281 0.0278 0.0282 0.0282 0.0289 0.0287 0.0284 TTL / H / θ 1.6323 1.6250 1.6120 1.6111 1.5944 1.6181 1.6143 1.6551 1.6441 1.6246 |(HF*θ) / (F*θ)| 0.9815 0.9828 0.9828 0.9812 0.9815 0.9821 0.9836 0.9830 0.9833 0.9852 D / H / FOV 0.0120 0.0123 0.0127 0.0125 0.0124 0.0125 0.0113 0.0116 0.0124 0.0129 D / H / θ 0.6856 0.7044 0.7261 0.7143 0.7080 0.7151 0.6492 0.6656 0.7132 0.7376 TTL / (F*θ) 3.6199 3.3482 3.3206 3.6393 3.5319 3.4681 3.1834 3.3683 3.3021 2.8796 F3 / F 4.8425 5.2078 4.9827 5.3104 4.5965 4.5134 6.6480 6.9922 4.4487 3.8674 R4 / F -1.8707 -1.7303 -1.7449 -1.9123 -2.1494 -2.1105 -1.5035 -1.5908 -1.8905 -1.6486 F2 / F -49.2235 -64.1134 -63.5303 -69.6276 -67.9171 -66.6898 -27.7805 -65.0297 -63.2314 -28.1304 R7 / F 3.3055 3.0574 2.3088 2.3003 2.7604 2.8460 4.6038 4.8713 2.3844 2.0793 R9 / R12 0.9939 0.9741 0.9923 0.9923 1.1845 1.1845 1.7137 1.7137 1.1438 1.5182 R15 / F 4.8884 4.5672 2.8288 3.0693 2.2385 2.0352 4.6611 4.4387 2.4651 2.3451 F67 / F -3.7752 -3.2688 -2.5460 -2.7904 -2.8923 -2.8400 -4.5400 -5.3246 -2.6049 -2.2317 R7 / TTL 0.4360 0.4360 0.3320 0.3018 0.3732 0.3918 0.6905 0.6905 0.3448 0.3448 R9 / TTL 0.2632 0.2632 0.2958 0.2958 0.3141 0.3141 0.2585 0.2585 0.3637 0.4401 (FOV*H) / F 266.1125 247.2556 247.1854 271.0680 265.8183 257.1901 236.6402 244.2172 241.0070 212.6952 (θ*H) / F 4.6446 4.3154 4.3142 4.7310 4.6394 4.4888 4.1302 4.2624 4.2064 3.7122 R3 / R4 0.7917 0.8078 0.7948 0.7948 0.8193 0.8193 0.7583 0.7982 0.7807 0.7417 R5 / R6 0.3166 0.3483 0.2887 0.2829 -0.4461 -0.4461 -0.4281 -0.4368 0.2691 0.2665

[0337] Tables 21 and 22 provide some parameters of the optical lenses for Examples 1 to 10.

[0338] Parameters / Examples 1 2 3 4 5 6 7 8 9 10 F 4.3262 4.6772 4.7162 4.3032 4.4178 4.4991 4.8896 4.6211 4.7427 5.4386 TTL 32.7991 32.7991 32.7994 32.7994 32.6793 32.6793 32.6000 32.6000 32.8001 32.8001 FOV 120.0000 120.0000 120.0000 120.0000 120.0000 120.0000 120.0000 120.0000 120.0000 120.0000 θ 2.0944 2.0944 2.0944 2.0944 2.0944 2.0944 2.0944 2.0944 2.0944 2.0944 H 9.5938 9.6372 9.7148 9.7205 9.7861 9.6427 9.6423 9.4046 9.5252 9.6397 D 13.7765 14.2176 14.7733 14.5431 14.5109 14.4417 13.1102 13.1102 14.2290 14.8914 F2 -212.9507 -299.8710 -299.6214 -299.6214 -300.0442 -300.0442 -135.8355 -300.5086 -299.8877 -152.9899 F3 20.9498 24.3578 23.4992 22.8515 20.3064 20.3064 32.5060 32.3117 21.0987 21.0332 R3 -6.4071 -6.5372 -6.5405 -6.5405 -7.7801 -7.7801 -5.5742 -5.8676 -7.0003 -6.6503 R4 -8.0930 -8.0930 -8.2292 -8.2292 -9.4955 -9.4955 -7.3513 -7.3513 -8.9663 -8.9663 R5 12.2327 13.5919 14.0950 13.8131 23.2359 23.2359 37.2177 37.2177 12.9941 12.9941 R6 38.6340 39.0242 48.8252 48.8252 -52.0915 -52.0915 -86.9405 -85.2017 48.2787 48.7664 R7 14.3003 14.3003 10.8887 9.8988 12.1949 12.8046 22.5108 22.5108 11.3084 11.3084 R9 8.6323 8.6323 9.7010 9.7010 10.2634 10.2634 8.4281 8.4281 11.9290 14.4341 R12 8.6851 8.8615 9.7762 9.7762 8.6649 8.6649 4.9182 4.9182 10.4293 9.5075 R15 21.1483 21.3619 13.3413 13.2079 9.8891 9.1566 22.7909 20.5118 11.6913 12.7541 F67 -16.3322 -15.2887 -12.0075 -12.0075 -12.7776 -12.7776 -22.1989 -24.6055 -12.3538 -12.1357

[0339] Table 22

[0340] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0341] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0342] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0343] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An optical lens, characterized in that, The optical lens has eight lenses with optical power, and the eight lenses, from the first side to the second side, include the following: A first lens, having negative optical power, with a first side surface being convex and a second side surface being concave; The second lens has negative optical power, the first side of the second lens is concave, and the second side of the second lens is convex; The third lens has positive optical power, and the first side surface of the third lens is convex. The fourth lens has positive optical power, and the first side surface of the fourth lens is convex. The fifth lens has positive optical power, and both its first and second sides are convex. The sixth lens has negative optical power, and the second side surface of the sixth lens is concave. The seventh lens has positive optical power, and the first side surface of the seventh lens is convex. The eighth lens has optical power, the first side surface of the eighth lens is convex, and the second side surface of the eighth lens is concave. The focal length F2 of the second lens and the total focal length F of the optical lens satisfy the following condition: -69.6276≤F2 / F≤-10.

2. The optical lens according to claim 1, characterized in that, The second side surface of the third lens is concave.

3. The optical lens according to claim 1, characterized in that, The second side surface of the third lens is convex.

4. The optical lens according to claim 1, characterized in that, The second side surface of the fourth lens is convex.

5. The optical lens according to claim 1, characterized in that, The second side surface of the fourth lens is concave.

6. The optical lens according to claim 1, characterized in that, The first side surface of the sixth lens is concave.

7. The optical lens according to claim 1, characterized in that, The first side surface of the sixth lens is convex.

8. The optical lens according to claim 1, characterized in that, The second side surface of the seventh lens is convex.

9. The optical lens according to claim 1, characterized in that, The second side surface of the seventh lens is concave.

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

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

12. The optical lens according to claim 1, characterized in that, Both the second lens and the eighth lens are aspherical lenses.

13. The optical lens according to claim 1, characterized in that, The sixth lens and the seventh lens are cemented together to form a cemented lens.

14. The optical lens according to claim 1, characterized in that, The fifth lens, the sixth lens, and the seventh lens are cemented together to form a cemented lens.

15. The optical lens according to claim 1, characterized in that, The second side surface of the eighth lens has a recurved point.

16. The optical lens according to claim 1, characterized in that, The first side surface and the second side surface of the eighth lens have inflection points.

17. The optical lens according to claim 1, characterized in that, The optical lens also includes an aperture stop, which is located between the third lens and the fourth lens.

18. The optical lens according to any one of claims 1 to 17, characterized in that, The total optical length TTL of the optical lens and the total focal length F of the optical lens satisfy the following condition: 6.031≤TTL / F≤12.

19. The optical lens according to any one of claims 1 to 17, characterized in that, The total optical length (TTL) of the optical lens, the image height (H) corresponding to the maximum field of view (FOV) of the optical lens, and the maximum field of view (FOV) of the optical lens satisfy the following condition: 0.0278 / ° ≤ TTL / H / FOV ≤ 0.07 / °.

20. The optical lens according to any one of claims 1 to 17, characterized in that, The total optical length TTL of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy the following condition: 1.5944≤TTL / H / θ≤3.

5.

21. The optical lens according to any one of claims 1 to 17, characterized in that, The image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy the following condition: 0.9812≤|(HF*θ) / (F*θ)|≤2.

22. The optical lens according to any one of claims 1 to 17, characterized in that, The maximum aperture D of the first side of the first lens corresponding to the maximum aperture of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view FOV of the optical lens satisfy the following condition: 0.0113 / °≤D / H / FOV≤0.04 / °.

23. The optical lens according to any one of claims 1 to 17, characterized in that, The maximum aperture D of the first side of the first lens corresponding to the maximum aperture of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy the following condition: 0.6492≤D / H / θ≤1.

9.

24. The optical lens according to any one of claims 1 to 17, characterized in that, The total optical length TTL of the optical lens, the total focal length F of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy the following condition: 0.8≤TTL / (F*θ)≤7.

25. The optical lens according to any one of claims 1 to 17, characterized in that, The total focal length F of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view FOV of the optical lens satisfy the following condition: 200°≤(FOV*H) / F≤271.068°.

26. The optical lens according to any one of claims 1 to 17, characterized in that, The total focal length F of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy the following condition: 2.2≤(θ*H) / F≤4.

731.

27. The optical lens according to any one of claims 1 to 17, characterized in that, The radius of curvature R4 of the second side of the second lens and the total focal length F of the optical lens satisfy the following condition: -2.1494≤R4 / F≤-0.

001.

28. The optical lens according to any one of claims 1 to 17, characterized in that, The radius of curvature R7 of the first side of the fourth lens and the total focal length F of the optical lens satisfy the following condition: 0.5≤R7 / F≤8.

29. The optical lens according to any one of claims 1 to 17, characterized in that, The radius of curvature R9 of the first side of the fifth lens and the radius of curvature R12 of the second side of the sixth lens satisfy the following condition: 0.1≤R9 / R12≤1.7137.

30. The optical lens according to any one of claims 1 to 17, characterized in that, The radius of curvature R15 of the first side of the eighth lens and the total focal length F of the optical lens satisfy the following condition: 1.5≤R15 / F≤4.8884.

31. The optical lens according to any one of claims 1 to 17, characterized in that, The sixth lens and the seventh lens are cemented together to form a cemented lens. The focal length F67 of the cemented lens and the total focal length F of the optical lens satisfy the following relationship: -20≤F67 / F≤20.

32. The optical lens according to any one of claims 1 to 17, characterized in that, The radius of curvature R7 of the first side of the fourth lens and the total optical length TTL of the optical lens satisfy the following condition: 0.1≤R7 / TTL≤0.6905.

33. The optical lens according to any one of claims 1 to 17, characterized in that, The radius of curvature R9 of the first side of the fifth lens and the total optical length TTL of the optical lens satisfy the following condition: 0.08≤R9 / TTL≤0.4401.

34. The optical lens according to any one of claims 1 to 17, characterized in that, The radius of curvature R3 of the first side surface of the second lens and the radius of curvature R4 of the second side surface of the second lens satisfy the following condition: 0.3≤R3 / R4≤3.

35. The optical lens according to any one of claims 1 to 17, characterized in that, The radius of curvature R5 of the first side surface of the third lens and the radius of curvature R6 of the second side surface of the third lens satisfy the following condition: -1.5≤R5 / R6≤1.

5.

36. The optical lens according to any one of claims 1 to 17, characterized in that, The following conditions must be met: 6.031≤TTL / F≤10, 0.0278 / °≤TTL / H / FOV≤0.04 / °, 1.5944≤TTL / H / θ≤2.0, 0.9812≤|(HF*θ) / (F*θ)|≤1.2, 0.0113 / °≤D / H / FOV≤0.02 / °, 0.6492≤D / H / θ≤1.2, 1.5≤TTL / (F*θ)≤5, 210°≤(FOV*H) / F≤271.068°, 3 ≤(θ*H) / F≤4.731, 6.9922≥F3 / F≥1, -2.1494≤R4 / F≤-0.5, -69.6276≤F2 / F≤-20, 1≤R7 / F≤7, 0.2≤R9 / R12≤1.7137 , 1.8≤R15 / F≤4.8884, -10≤F67 / F≤10, 0.22≤R7 / TTL≤0.6905, 0.15≤R9 / TTL≤0.4401, 0.45≤R3 / R4≤2.5, -1.3≤R5 / R6≤1.3, wherein the total optical length of the optical lens is TTL, the total focal length of the optical lens is F, the image height corresponding to the maximum field of view of the optical lens is H, the maximum field of view of the optical lens is FOV, the radian value corresponding to the maximum field of view of the optical lens is θ, the maximum aperture of the first side of the first lens corresponding to the maximum aperture of the optical lens is D, the focal length of the third lens is F3, the radius of curvature of the second side of the second lens is R4, the focal length of the second lens is F2, the radius of curvature of the first side of the fourth lens is R7, the radius of curvature of the first side of the fifth lens is R9, the radius of curvature of the second side of the sixth lens is R12, the radius of curvature of the first side of the eighth lens is R15, the sixth lens and the seventh lens are cemented together to form a cemented lens, the focal length of the cemented lens is F67, the radius of curvature of the first side of the second lens is R3, the radius of curvature of the first side of the third lens is R5, and the radius of curvature of the second side of the third lens is R6.

37. The optical lens according to any one of claims 1 to 17, characterized in that, The following conditions must be met: 6.031≤TTL / F≤7.6221, 0.0278 / °≤TTL / H / FOV≤0.0289 / °, 1.5944≤TTL / H / θ≤1.6551, 0.9812≤|(HF*θ) / (F*θ)|≤0.9852, 0.0113 / °≤D / H / FOV≤0.0129 / °, 0.6492≤D / H / θ≤0.7376, 2.8796≤TTL / (F*θ)≤3.6393, 212.6952°≤(FOV*H) / F≤27 1.068°, 3.7122≤(θ*H) / F≤4.731, 6.9922≥F3 / F≥3.8674, -2.1494≤R4 / F≤-1.5035, -69.6276≤F2 / F≤-27.7805, 2.0793≤R7 / F ≤4.8713, 0.9741≤R9 / R12≤1.7137, 2.0352≤R15 / F≤4.8884, -5.3246≤F67 / F≤-2.2317, 0.3018≤R7 / TTL≤0.6905, 0.2585≤R9 / TTL≤0.4401, 0.7417≤R3 / R4≤0.8193, -0.4461≤R5 / R6≤0.3483, where the total optical length of the optical lens is TTL, the total focal length of the optical lens is F, the image height corresponding to the maximum field of view of the optical lens is H, the maximum field of view of the optical lens is FOV, the radian value corresponding to the maximum field of view of the optical lens is θ, the maximum aperture of the first side of the first lens corresponding to the maximum aperture of the optical lens is D, the focal length of the third lens is F3, and the second aperture of the second lens is... The radius of curvature of the side surface of the fourth lens is R4, the focal length of the second lens is F2, the radius of curvature of the first side surface of the fourth lens is R7, the radius of curvature of the first side surface of the fifth lens is R9, the radius of curvature of the second side surface of the sixth lens is R12, the radius of curvature of the first side surface of the eighth lens is R15, the sixth lens and the seventh lens are cemented together to form a cemented lens, the focal length of the cemented lens is F67, the radius of curvature of the first side surface of the second lens is R3, the radius of curvature of the first side surface of the third lens is R5, and the radius of curvature of the second side surface of the third lens is R6.

38. An optical lens, characterized in that, The optical lens has eight lenses with optical power, and the eight lenses, from the first side to the second side, include the following: A first lens, having negative optical power, with a first side surface being convex and a second side surface being concave; The second lens has negative optical power, the first side of the second lens is concave, and the second side of the second lens is convex; The third lens has positive optical power, and the first side surface of the third lens is convex. The fourth lens has positive optical power, and the first side surface of the fourth lens is convex. The fifth lens has positive optical power, and both its first and second sides are convex. The sixth lens has negative optical power, and the second side surface of the sixth lens is concave. The seventh lens has positive optical power, and the first side surface of the seventh lens is convex. The eighth lens has optical power, the first side surface of the eighth lens is convex, and the second side surface of the eighth lens is concave. Wherein, the focal length F3 of the third lens and the total focal length F of the optical lens satisfy the following relationship: 6.9922≥F3 / F≥0.001; The focal length F2 of the second lens and the total focal length F of the optical lens satisfy the following condition: -69.6276≤F2 / F≤-10.

39. The optical lens according to claim 38, characterized in that, The second side surface of the third lens is concave.

40. The optical lens according to claim 38, characterized in that, The second side surface of the third lens is convex.

41. The optical lens according to claim 38, characterized in that, The second side surface of the fourth lens is convex.

42. The optical lens according to claim 38, characterized in that, The second side surface of the fourth lens is concave.

43. The optical lens according to claim 38, characterized in that, The first side surface of the sixth lens is concave.

44. The optical lens according to claim 38, characterized in that, The first side surface of the sixth lens is convex.

45. The optical lens according to claim 38, characterized in that, The second side surface of the seventh lens is convex.

46. ​​The optical lens according to claim 38, characterized in that, The second side surface of the seventh lens is concave.

47. The optical lens according to claim 38, characterized in that, The eighth lens has positive optical power.

48. The optical lens according to claim 38, characterized in that, The eighth lens has negative optical power.

49. The optical lens according to claim 38, characterized in that, Both the second lens and the eighth lens are aspherical lenses.

50. The optical lens according to claim 38, characterized in that, The sixth lens and the seventh lens are cemented together to form a cemented lens.

51. The optical lens according to claim 38, characterized in that, The fifth lens, the sixth lens, and the seventh lens are cemented together to form a cemented lens.

52. The optical lens according to claim 38, characterized in that, The second side surface of the eighth lens has a recurved point.

53. The optical lens according to claim 38, characterized in that, The first side surface and the second side surface of the eighth lens have inflection points.

54. The optical lens according to claim 38, characterized in that, The optical lens also includes an aperture stop, which is located between the third lens and the fourth lens.

55. The optical lens according to any one of claims 38 to 54, characterized in that, The total optical length TTL of the optical lens and the total focal length F of the optical lens satisfy the following condition: 6.031≤TTL / F≤12.

56. The optical lens according to any one of claims 38 to 54, characterized in that, The total optical length (TTL) of the optical lens, the image height (H) corresponding to the maximum field of view (FOV) of the optical lens, and the maximum field of view (FOV) of the optical lens satisfy the following condition: 0.0278 / ° ≤ TTL / H / FOV ≤ 0.07 / °.

57. The optical lens according to any one of claims 38 to 54, characterized in that, The total optical length TTL of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy the following condition: 1.5944≤TTL / H / θ≤3.

5.

58. The optical lens according to any one of claims 38 to 54, characterized in that, The image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy the following condition: 0.9812≤|(HF*θ) / (F*θ)|≤2.

59. The optical lens according to any one of claims 38 to 54, characterized in that, The maximum aperture D of the first side of the first lens corresponding to the maximum aperture of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view FOV of the optical lens satisfy the following condition: 0.0113 / °≤D / H / FOV≤0.04 / °.

60. The optical lens according to any one of claims 38 to 54, characterized in that, The maximum aperture D of the first side of the first lens corresponding to the maximum aperture of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy the following condition: 0.6492≤D / H / θ≤1.

9.

61. The optical lens according to any one of claims 38 to 54, characterized in that, The total optical length TTL of the optical lens, the total focal length F of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy the following condition: 0.8≤TTL / (F*θ)≤7.

62. The optical lens according to any one of claims 38 to 54, characterized in that, The total focal length F of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view FOV of the optical lens satisfy the following condition: 200°≤(FOV*H) / F≤271.068°.

63. The optical lens according to any one of claims 38 to 54, characterized in that, The total focal length F of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy the following condition: 2.2≤(θ*H) / F≤4.

731.

64. The optical lens according to any one of claims 38 to 54, characterized in that, The radius of curvature R4 of the second side of the second lens and the total focal length F of the optical lens satisfy the following condition: -2.1494≤R4 / F≤-0.

001.

65. The optical lens according to any one of claims 38 to 54, characterized in that, The radius of curvature R7 of the first side of the fourth lens and the total focal length F of the optical lens satisfy the following condition: 0.5≤R7 / F≤8.

66. The optical lens according to any one of claims 38 to 54, characterized in that, The radius of curvature R9 of the first side of the fifth lens and the radius of curvature R12 of the second side of the sixth lens satisfy the following condition: 0.1≤R9 / R12≤1.7137.

67. The optical lens according to any one of claims 38 to 54, characterized in that, The radius of curvature R15 of the first side of the eighth lens and the total focal length F of the optical lens satisfy the following condition: 1.5≤R15 / F≤4.8884.

68. The optical lens according to any one of claims 38 to 54, characterized in that, The sixth lens and the seventh lens are cemented together to form a cemented lens. The focal length F67 of the cemented lens and the total focal length F of the optical lens satisfy the following relationship: -20≤F67 / F≤20.

69. The optical lens according to any one of claims 38 to 54, characterized in that, The radius of curvature R7 of the first side of the fourth lens and the total optical length TTL of the optical lens satisfy the following condition: 0.1≤R7 / TTL≤0.6905.

70. The optical lens according to any one of claims 38 to 54, characterized in that, The radius of curvature R9 of the first side of the fifth lens and the total optical length TTL of the optical lens satisfy the following condition: 0.08≤R9 / TTL≤0.4401.

71. The optical lens according to any one of claims 38 to 54, characterized in that, The radius of curvature R3 of the first side surface of the second lens and the radius of curvature R4 of the second side surface of the second lens satisfy the following condition: 0.3≤R3 / R4≤3.

72. The optical lens according to any one of claims 38 to 54, characterized in that, The radius of curvature R5 of the first side surface of the third lens and the radius of curvature R6 of the second side surface of the third lens satisfy the following condition: -1.5≤R5 / R6≤1.

5.

73. The optical lens according to any one of claims 38 to 54, characterized in that, The following conditions must be met: 6.031≤TTL / F≤10, 0.0278 / °≤TTL / H / FOV≤0.04 / °, 1.5944≤TTL / H / θ≤2.0, 0.9812≤|(HF*θ) / (F*θ)|≤1.2, 0.0113 / °≤D / H / FOV≤0.02 / °, 0.6492≤D / H / θ≤1.2, 1.5≤TTL / (F*θ)≤5, 210°≤(FOV*H) / F≤271.068°, 3 ≤(θ*H) / F≤4.731, 6.9922≥F3 / F≥1, -2.1494≤R4 / F≤-0.5, -69.6276≤F2 / F≤-20, 1≤R7 / F≤7, 0.2≤R9 / R12≤1.7137 , 1.8≤R15 / F≤4.8884, -10≤F67 / F≤10, 0.22≤R7 / TTL≤0.6905, 0.15≤R9 / TTL≤0.4401, 0.45≤R3 / R4≤2.5, -1.3≤R5 / R6≤1.3, wherein the total optical length of the optical lens is TTL, the total focal length of the optical lens is F, the image height corresponding to the maximum field of view of the optical lens is H, the maximum field of view of the optical lens is FOV, the radian value corresponding to the maximum field of view of the optical lens is θ, the maximum aperture of the first side of the first lens corresponding to the maximum aperture of the optical lens is D, the focal length of the third lens is F3, the radius of curvature of the second side of the second lens is R4, the focal length of the second lens is F2, the radius of curvature of the first side of the fourth lens is R7, the radius of curvature of the first side of the fifth lens is R9, the radius of curvature of the second side of the sixth lens is R12, the radius of curvature of the first side of the eighth lens is R15, the sixth lens and the seventh lens are cemented together to form a cemented lens, the focal length of the cemented lens is F67, the radius of curvature of the first side of the second lens is R3, the radius of curvature of the first side of the third lens is R5, and the radius of curvature of the second side of the third lens is R6.

74. The optical lens according to any one of claims 38 to 54, characterized in that, The following conditions must be met: 6.031≤TTL / F≤7.6221, 0.0278 / °≤TTL / H / FOV≤0.0289 / °, 1.5944≤TTL / H / θ≤1.6551, 0.9812≤|(HF*θ) / (F*θ)|≤0.9852, 0.0113 / °≤D / H / FOV≤0.0129 / °, 0.6492≤D / H / θ≤0.7376, 2.8796≤TTL / (F*θ)≤3.6393, 212.6952°≤(FOV*H) / F≤27 1.068°, 3.7122≤(θ*H) / F≤4.731, 6.9922≥F3 / F≥3.8674, -2.1494≤R4 / F≤-1.5035, -69.6276≤F2 / F≤-27.7805, 2.0793≤R7 / F ≤4.8713, 0.9741≤R9 / R12≤1.7137, 2.0352≤R15 / F≤4.8884, -5.3246≤F67 / F≤-2.2317, 0.3018≤R7 / TTL≤0.6905, 0.2585≤R9 / TTL≤0.4401, 0.7417≤R3 / R4≤0.8193, -0.4461≤R5 / R6≤0.3483, where the total optical length of the optical lens is TTL, the total focal length of the optical lens is F, the image height corresponding to the maximum field of view of the optical lens is H, the maximum field of view of the optical lens is FOV, the radian value corresponding to the maximum field of view of the optical lens is θ, the maximum aperture of the first side of the first lens corresponding to the maximum aperture of the optical lens is D, the focal length of the third lens is F3, and the second aperture of the second lens is... The radius of curvature of the side surface of the fourth lens is R4, the focal length of the second lens is F2, the radius of curvature of the first side surface of the fourth lens is R7, the radius of curvature of the first side surface of the fifth lens is R9, the radius of curvature of the second side surface of the sixth lens is R12, the radius of curvature of the first side surface of the eighth lens is R15, the sixth lens and the seventh lens are cemented together to form a cemented lens, the focal length of the cemented lens is F67, the radius of curvature of the first side surface of the second lens is R3, the radius of curvature of the first side surface of the third lens is R5, and the radius of curvature of the second side surface of the third lens is R6.

75. An electronic device, characterized in that, It includes an optical lens as described in any one of claims 1 to 74 and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

Images