Optical lens and electronic device

Abstract

This invention provides an optical lens and an electronic device. The optical lens, from first to second side, comprises: a first lens with positive optical power, the first side of which is convex; a second lens with negative optical power, the first side of which is convex and the second side is concave; a third lens with positive optical power, the first side of which is convex; a fourth lens with optical power, the first side of which is convex; and a fifth lens with optical power, the first side of which is convex and the second side is concave; satisfying: -6 ≤ R3 / F2 ≤ -0.5; satisfying: 0.1 ≤ R7 / F ≤ 1.5; and satisfying: 4 ≥ D1 / D10 ≥ 1.5. This invention solves the problem in existing optical lenses where high resolution and short back focal length are difficult to achieve simultaneously.

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. Background Technology

[0002] In recent years, with the development of technology, the demand for optical lenses in daily life has been increasing, and optical lenses are being applied in more and more scenarios, such as in the autonomous driving assistance industry. For driving safety, more accurate detection of the driving environment is required, making optical lenses a key component for detecting information around the vehicle. Simultaneously, with the rapid development of autonomous driving assistance systems, the number of optical lenses used in automobiles is gradually increasing, and the demand for headlight lenses is also rising, moving towards higher resolution and miniaturization. To achieve the function of assisting driving, intelligent headlight optical lenses have more specific requirements compared to ordinary optical lenses.

[0003] Current intelligent headlight optical lenses require high resolution to support accurate road information capture, but existing technologies lack sufficient resolution, resulting in severe color aberration and fringing in the projected image, affecting image quality. Furthermore, current intelligent headlight optical lenses have a relatively long back focal length, failing to meet the requirements for short back focal lengths and miniaturization.

[0004] In other words, existing optical lenses suffer from the problem of simultaneously achieving high resolution and short back focal length. Summary of the Invention

[0005] The main objective of this invention is to provide an optical lens and an electronic device to solve the problem that existing optical lenses cannot simultaneously achieve high resolution and short back focal length. The optical lens of this application has excellent imaging performance, with an FNO of less than 0.7 and an MTF performance of 0.3@20lp / mm.

[0006] To achieve the above objectives, according to one aspect of the present invention, an optical lens is provided, comprising, from a first side to a second side, the following: a first lens having positive optical power, wherein the first side of the first lens is convex; a second lens having negative optical power, wherein the first side of the second lens is convex and the second side is concave; a third lens having positive optical power, wherein the first side of the third lens is convex; a fourth lens having optical power, wherein the first side of the fourth lens is convex; and a fifth lens having optical power, wherein the first side of the fifth lens is convex and the second side is concave; wherein the radius of curvature R3 of the first side of the second lens satisfies -6≤R3 / F2≤-0.5 with respect to the focal length F2 of the second lens; wherein the radius of curvature R7 of the first side of the fourth lens satisfies 0.1≤R7 / F≤1.5 with respect to the total focal length F of the optical lens; and wherein the maximum effective aperture D1 of the first side of the first lens satisfies 4≥D1 / D10≥1.5 with respect to the maximum effective aperture D10 of the second side of the fifth lens.

[0007] According to another aspect of the present invention, an electronic device is provided, including the aforementioned optical lens and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

[0008] According to the technical solution of this invention, the optical lens sequentially includes, from the first side to the second side: a first lens with positive optical power, the first side of the first lens being convex; a second lens with negative optical power, the first side of the second lens being convex and the second side being concave; a third lens with positive optical power, the first side of the third lens being convex; a fourth lens with optical power, the first side of the fourth lens being convex; and a fifth lens with optical power, the first side of the fifth lens being convex and the second side being concave; the radius of curvature R3 of the first side of the second lens and the focal length F2 of the second lens satisfy: -6≤R3 / F2≤-0.5; the radius of curvature R7 of the first side of the fourth lens and the total focal length F of the optical lens satisfy: 0.1≤R7 / F≤1.5; the maximum effective aperture D1 of the first side of the first lens and the maximum effective aperture D10 of the second side of the fifth lens satisfy: 4≥D1 / D10≥1.5.

[0009] The first lens has positive optical power, and its first side is convex, which helps to collect light rays from a large field of view into the rear optical system and fix the direction of large-angle light rays at the edges. The second side can be convex, flat, or concave. When the second side is convex, it helps to control spherical aberration. When the second side is flat, it avoids focusing errors caused by curvature. When the second side is concave, it helps to correct spherical aberration and achieve a short back focal length.

[0010] The second lens has a negative light angle. The first side of the second lens is convex, and the second side is concave. The second lens has a second concave meniscus shape and negative optical power, which can collect the light rays passing through the first lens, so that the light rays converge first and then diverge, which is beneficial to the smooth light path and reduces the volume of the rear end.

[0011] The third lens has positive optical power. Its first side is convex, and its second side is either convex, flat, or concave. When the second side is convex and has positive optical power, it allows diverging light rays to smoothly enter the rear, further compressing the light aperture and reducing the rear aperture. When the second side is flat and has positive optical power, it allows diverging light rays to smoothly enter the rear, further smoothing the light path. When the second side is concave and has positive optical power, it allows diverging light rays to smoothly enter the rear, further smoothing the light path.

[0012] The fourth lens has either positive or negative optical power, and its first side is convex. When the fourth lens has positive optical power and its second side is concave, the positive optical power converges the light rays, and the concave second side helps balance the negative spherical aberration generated at the front end of the system, improving resolution. When the fourth lens has positive optical power and its second side is convex, the biconvex shape further converges the light rays, compressing the aperture and shortening the back focal length. When the fourth lens has positive optical power and its second side is flat, the positive optical power converges the light rays and smooths their path, reducing system sensitivity. When the fourth lens has negative optical power and its second side is concave, it allows for appropriate light divergence, ensuring stable light transmission to the fifth lens and maintaining high luminous flux.

[0013] The fifth lens has both positive and negative optical power. Its first side is convex, and its second side is concave. Positive optical power further converges light, reducing the back focal length and facilitating miniaturization. Negative optical power helps balance spherical aberration, improving the resolving power of the optical system.

[0014] By constraining -6≤R3 / F2≤-0.5, the first side of the second lens is ensured to be convex, which is beneficial for collecting edge light rays under large aperture conditions. Simultaneously, the second lens is a negative lens, acting as a diverging lens. The convexity of the first side of the second lens allows light rays to converge before diverging, which helps reduce the back focal length. If the value is below this range, the edges become too curved, and the second lens cannot collect edge light rays, resulting in a decrease in luminous flux. If the value is above this range, it will not compress the light rays. By constraining 0.1≤R7 / F≤1.5, the smaller the ratio, the smaller the radius of curvature of the first side of the fourth lens, causing light rays to converge and benefiting a short back focal length. By constraining 4≥D1 / D10≥1.5, the aperture of the first lens is made much larger than that of the fifth lens, ensuring that large-angle light rays enter the optical system, achieving the collection of light rays over a wide range, and thus improving luminous flux.

[0015] This application employs five lenses. By optimizing the optical power and surface shape of each lens, the optical lens of this invention has at least one beneficial effect such as short back focal length, high light throughput, and high resolution. Attached Figure Description

[0016] 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:

[0017] Figure 1 A schematic diagram of the structure of an optical lens of Example 1 of the present invention is shown;

[0018] Figure 2 A schematic diagram of the structure of the optical lens of Example 2 of the present invention is shown;

[0019] Figure 3 A schematic diagram of the structure of the optical lens of Example 3 of the present invention is shown;

[0020] Figure 4 A schematic diagram of the structure of the optical lens of Example 4 of the present invention is shown;

[0021] Figure 5 A schematic diagram of the structure of the optical lens of Example 5 of the present invention is shown;

[0022] Figure 6 A schematic diagram of the structure of the optical lens of Example Six of the present invention is shown;

[0023] Figure 7 A schematic diagram of the structure of the optical lens of Example Seven of the present invention is shown;

[0024] Figure 8 A schematic diagram of the structure of the optical lens of Example 8 of the present invention is shown;

[0025] Figure 9 A schematic diagram of the structure of the optical lens of Example 9 of the present invention is shown;

[0026] Figure 10 A schematic diagram of the structure of the optical lens of Example 10 of the present invention is shown;

[0027] Figure 11 A schematic diagram of the structure of the optical lens of Example Eleven of the present invention is shown;

[0028] Figure 12 A schematic diagram of the structure of the optical lens of Example Twelve of the present invention is shown;

[0029] Figure 13 A schematic diagram of the structure of the optical lens of Example Thirteen of the present invention is shown;

[0030] Figure 14 A schematic diagram of the structure of the optical lens of Example Fourteen of the present invention is shown;

[0031] Figure 15 A schematic diagram of the structure of the optical lens of Example Fifteen of the present invention is shown;

[0032] Figure 16 A schematic diagram of the structure of the optical lens of Example Sixteen of the present invention is shown;

[0033] Figure 17 A schematic diagram of the structure of the optical lens of Example Seventeen of the present invention is shown;

[0034] Figure 18 A schematic diagram of the structure of the optical lens of Example 18 of the present invention is shown;

[0035] Figure 19 The MTF curve of the optical lens of Example 1 of the present invention is shown;

[0036] Figure 20 The MTF curve of the optical lens of Example 3 of the present invention is shown;

[0037] Figure 21 The MTF curve of the optical lens of Example Six of the present invention is shown;

[0038] Figure 22 The MTF curve of the optical lens of Example Seven of the present invention is shown;

[0039] Figure 23 The MTF curve of the optical lens of Example 8 of the present invention is shown;

[0040] Figure 24 The MTF curve of the optical lens of Example Nine of the present invention is shown.

[0041] The above figures include the following reference numerals:

[0042] 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; STO, Aperture stop; 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; IMA, Imaging plane. Detailed Implementation

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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 first side is called the first side surface of the lens, and the surface of each lens closest to the second side is called the second side surface of the lens. The surface shape in the paraxial region can be determined according to the judgment method commonly known 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.

[0049] It should be noted that the left side of the optical lens is the first side, and the right side of the optical lens is the second side.

[0050] In an exemplary embodiment, the optical lens provided in this application can be used as a vehicle-mounted lens. For a vehicle-mounted lens, the left side is the object side, and the right side is the image side; the first side is also the object side, and the second side is also the image side. Light rays from the object side can form an image on the image side.

[0051] 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 by 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 rays from the image source side can be imaged on the imaging side, and the imaging surface of the optical lens is the image source surface.

[0052] To address the problem that existing optical lenses cannot simultaneously achieve both high resolution and short back focal length, and further to solve the problem that existing optical lenses cannot simultaneously achieve both high resolution, short back focal length, and high light transmission, this invention provides an optical lens and an electronic device.

[0053] like Figures 1 to 24As shown, the optical lens, from the first side to the second side, includes: a first lens with positive optical power, the first side of which is convex; a second lens with negative optical power, the first side of which is convex and the second side is concave; a third lens with positive optical power, the first side of which is convex; a fourth lens with optical power, the first side of which is convex; and a fifth lens with optical power, the first side of which is convex and the second side is concave. The radius of curvature R3 of the first side of the second lens and the focal length F2 of the second lens satisfy the following condition: -6≤R3 / F2≤-0.5; 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: 0.1≤R7 / F≤1.5; the maximum effective aperture D1 of the first side of the first lens and the maximum effective aperture D10 of the second side of the fifth lens satisfy the following condition: 4≥D1 / D10≥1.5.

[0054] The first lens has positive optical power, and its first side is convex, which helps to collect light rays from a large field of view into the rear optical system and fix the direction of large-angle light rays at the edges. The second side can be convex, flat, or concave. When the second side is convex, it helps to control spherical aberration. When the second side is flat, it avoids focusing errors caused by curvature. When the second side is concave, it helps to correct spherical aberration and achieve a short back focal length.

[0055] The second lens has a negative light angle. The first side of the second lens is convex, and the second side is concave. The second lens has a second concave meniscus shape and negative optical power, which can collect the light rays passing through the first lens, so that the light rays converge first and then diverge, which is beneficial to the smooth light path and reduces the volume of the rear end.

[0056] The third lens has positive optical power. Its first side is convex, and its second side is either convex, flat, or concave. When the second side is convex and has positive optical power, it allows diverging light rays to smoothly enter the rear, further compressing the light aperture and reducing the rear aperture. When the second side is flat and has positive optical power, it allows diverging light rays to smoothly enter the rear, further smoothing the light path. When the second side is concave and has positive optical power, it allows diverging light rays to smoothly enter the rear, further smoothing the light path.

[0057] The fourth lens has either positive or negative optical power, and its first side is convex. When the fourth lens has positive optical power and its second side is concave, the positive optical power converges the light rays, and the concave second side helps balance the negative spherical aberration generated at the front end of the system, improving resolution. When the fourth lens has positive optical power and its second side is convex, the biconvex shape further converges the light rays, compressing the aperture and shortening the back focal length. When the fourth lens has positive optical power and its second side is flat, the positive optical power converges the light rays and smooths their path, reducing system sensitivity. When the fourth lens has negative optical power and its second side is concave, it allows for appropriate light divergence, ensuring stable light transmission to the fifth lens and maintaining high luminous flux.

[0058] The fifth lens has both positive and negative optical power. Its first side is convex, and its second side is concave. Positive optical power further converges light, reducing the back focal length and facilitating miniaturization. Negative optical power helps balance spherical aberration, improving the resolving power of the optical system.

[0059] By constraining -6≤R3 / F2≤-0.5, the first side of the second lens is ensured to be convex, which is beneficial for collecting edge light under large aperture conditions. Simultaneously, the second lens is a negative lens, acting as a diverging lens. The convexity of the first side of the second lens allows light to converge before diverging, which helps reduce the back focal length. If the value is below this range, the edges become too curved, and the second lens cannot collect edge light, resulting in a decrease in luminous flux. If the value is above this range, it fails to compress the light. Preferably, -4.2≤R3 / F2≤-1. By constraining 0.1≤R7 / F≤1.5, the smaller the ratio, the smaller the radius of curvature of the first side of the fourth lens, allowing light to converge and resulting in a shorter back focal length. Preferably, 0.2≤R7 / F≤1.3. By constraining 4≥D1 / D10≥1.5, the aperture of the first lens is much larger than that of the fifth lens, ensuring that large-angle light enters the optical system, achieving the collection of light over a wide range of angles, which helps increase luminous flux. Preferably, 3≥D1 / D10≥2.

[0060] This application employs five lenses. By optimizing the optical power and surface shape of each lens, the optical lens of this invention has at least one beneficial effect such as short back focal length, high light throughput, and high resolution.

[0061] In this embodiment, the second side surface of the first lens is convex, planar, or concave. A convex second side surface helps control spherical aberration. A planar second side surface avoids focusing errors caused by curvature. A concave second side surface facilitates spherical aberration correction and helps achieve a short back focal length.

[0062] In this embodiment, the second side surface of the third lens is convex, planar, or concave. When the second side surface of the third lens is convex, combined with positive optical power, it allows diverging light rays to smoothly enter the rear, further compressing the light aperture and reducing the rear aperture. When the second side surface of the third lens is planar, combined with positive optical power, it allows diverging light rays to smoothly enter the rear, further smoothing the light path. When the second side surface of the third lens is concave, combined with positive optical power, it allows diverging light rays to smoothly enter the rear, further smoothing the light path.

[0063] In this embodiment, the fourth lens has a positive optical power, and its second side is concave, convex, or planar; alternatively, the fourth lens has a negative optical power, and its second side is concave. When the fourth lens has a positive optical power and its second side is concave, the positive optical power converges the light rays, and the concave second side helps balance the negative spherical aberration generated at the system front end, improving resolution. When the fourth lens has a positive optical power and its second side is convex, the biconvex shape further converges the light rays, compressing the aperture while shortening the back focal length. When the fourth lens has a positive optical power and its second side is planar, the positive optical power converges the light rays and smooths their path, reducing system sensitivity. When the fourth lens has a negative optical power and its second side is concave, it facilitates appropriate light divergence, ensuring stable light transmission to the fifth lens and maintaining high luminous flux.

[0064] In this embodiment, the fifth lens has either positive or negative optical power. Positive optical power further converges the light rays, reducing the back focal length and facilitating miniaturization. Negative optical power helps balance the spherical aberration of the lens, improving the resolving power of the optical system.

[0065] Furthermore, when the fourth lens has a positive optical power and the fifth lens has a negative optical power, or when the fourth lens has a negative optical power and the fifth lens has a positive optical power, setting one of the fourth and fifth lenses to a negative optical power helps to balance the aberrations of the optical lens and improve resolution.

[0066] In this embodiment, the optical lens also includes an aperture stop, which is located between the second lens and the third lens. By rationally planning the position of the aperture stop, it is beneficial to effectively gather the light entering the optical system. At the same time, the aperture stop is located at the front of the optical system, which is beneficial to achieving a small FNO (no light density).

[0067] In this embodiment, at least one of the first and second side surfaces of the first lens and the second side surface of the second lens is an aspherical surface. By reasonably setting the aspherical surface, it is beneficial to correct field curvature, compress distortion, and achieve high resolution.

[0068] In this embodiment, the maximum effective aperture D1 of the first side of the first lens and the total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens to the center of the imaging plane of the optical lens, satisfy the following condition: 1.2 ≥ D1 / TTL ≥ 0.6. A larger ratio constrained by this condition is beneficial for light collection and ensures high luminous flux. Preferably, 0.9 ≥ D1 / TTL ≥ 0.62.

[0069] In this embodiment, the radius of curvature R4 of the second side surface of the second lens and the focal length F2 of the second lens satisfy the condition: -0.7 ≤ R4 / F2 ≤ -0.3. Satisfying this condition is beneficial for collecting light rays from a large field of view, improving resolution at the edges of the field of view, and making the edges of the second side surface of the first lens more curved, resulting in greater spherical aberration, reducing the total spherical aberration of the system, and alleviating the resolving pressure on the subsequent groups. Preferably, -0.68 ≤ R4 / F2 ≤ -0.35.

[0070] In this embodiment, the air gap d2 between the centers of the first lens and the second lens and the air gap ed12 between their edges satisfy the condition: 0.05 ≤ d2 / ed12 ≤ 1.2. Satisfying this condition helps to constrain the ratio of the center thickness to the edge thickness of the first and second lenses. A smaller ratio is beneficial for compressing light rays and achieving miniaturization. Preferably, 0.1 ≤ d2 / ed12 ≤ 1.

[0071] In this embodiment, the focal length F3 of the third lens satisfies the condition 0.9 ≤ F3 / F ≤ 2 with the total focal length F of the optical lens. Satisfying this condition helps to concentrate the diverging light rays from the second lens, resulting in a smaller rear aperture and shorter back focal length. Setting the focal length F3 of the third lens to a short focal length helps to better converge the light rays, increasing the light throughput and reducing the rear aperture, while effectively neutralizing the aberrations of the negative lens. Preferably, 1 ≤ F3 / F ≤ 1.9.

[0072] In this embodiment, the focal length F1 of the first lens and the total focal length F of the optical lens satisfy the condition: 4 ≥ F1 / F ≥ 0.3. Satisfying this condition facilitates the rational allocation of the focal length of the first lens, allows light rays with a large field of view to enter the optical system, and helps achieve high resolution. Preferably, 3.5 ≥ F1 / F ≥ 0.5.

[0073] In this embodiment, the total focal length F of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the following relationship: 5 ≥ F / H ≥ 1.8. Controlling the focal length and image height within a certain range is beneficial for improving resolution. Preferably, 4.2 ≥ F / H ≥ 2.

[0074] In this embodiment, the focal length F2 of the second lens and the total focal length F of the optical lens satisfy the condition: 0 ≥ F2 / F ≥ -2.5. Satisfying this condition helps ensure that the second lens has a negative focal length. A smaller focal length helps balance the spherical aberration generated by the lens and improves the system's resolving power. Preferably, 0 ≥ F2 / F ≥ -2.2.

[0075] In this embodiment, the radius of curvature R1 of the first side surface of the first lens and the total focal length F of the optical lens satisfy the condition: 0.5 ≤ R1 / F ≤ 3. By controlling this condition, a smaller radius of curvature of the first side surface of the first lens is beneficial for converging large-angle light rays and achieving high resolution. Preferably, 0.7 ≤ R1 / F ≤ 2.5.

[0076] In this embodiment, the focal length F1 of the first lens and the focal length F2 of the second lens satisfy the condition: 2 ≥ |F1 / F2| ≥ 0.5. Controlling this condition, the closer the focal lengths of the first and second lenses are, the better for balancing positive and negative phase differences and improving resolving power. Preferably, 1.9 ≥ |F1 / F2| ≥ 0.8.

[0077] In this embodiment, the optical back focal length (BFL), i.e., the distance from the center of the second side of the last lens of the optical lens to the center of the imaging plane, and the optical total length (TTL), i.e., the distance from the center of the first side of the first lens of the optical lens to the center of the imaging plane, satisfy the condition: 0.02 ≤ BFL / TTL ≤ 0.15. Controlling this condition, the smaller the ratio, the shorter the distance between the LED and the optical lens, which is beneficial for increasing luminous flux and ensuring a short back focal length. Preferably, 0.03 ≤ BFL / TTL ≤ 0.13.

[0078] In this embodiment, the combined focal length F45 of the fourth and fifth lenses satisfies the condition 0.73 ≤ F45 / F ≤ 2.21 with respect to the total focal length F of the optical lens. Controlling this condition results in a smaller combined focal length of the fourth and fifth lenses, leading to stronger light-gathering ability and a shorter back focal length. Preferably, 0.75 ≤ F45 / F ≤ 2.2.

[0079] In this embodiment, the optical back focal length of the optical lens, i.e., the distance BFL from the center of the second side of the last lens to the center of the imaging plane, satisfies the condition 0.03 ≤ BFL / TL ≤ 0.15 with respect to the distance TL from the center of the first side of the first lens to the center of the second side of the fifth lens. Satisfying this condition is beneficial for achieving a short back focal length. Preferably, 0.04 ≤ BFL / TL ≤ 0.13.

[0080] In this embodiment, the total focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy the following ratio: F / ENPD ≤ 0.75. The smaller the ratio, the smaller the FNO of the optical lens, which is beneficial for improving light throughput. Preferably, F / ENPD ≤ 0.7.

[0081] In this embodiment, the aperture diameter (DST) of the optical lens and the total focal length (F) of the optical lens satisfy the following relationship: 3 ≥ DST / F ≥ 0.6. A larger ratio of aperture diameter to effective focal length results in a larger aperture for the optical lens, which is beneficial for ensuring high light throughput. Preferably, 2 ≥ DST / F ≥ 0.65.

[0082] 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 of the maximum field of view of the optical lens satisfy the following condition: 0.0005 ≤ |(HF×θ) / (F×θ)| ≤ 0.028. Satisfying this condition ensures that, at the same field of view, the magnification at the center is approximately consistent with the magnification at the edge, achieving low distortion. Preferably, 0.001 ≤ |(HF×θ) / (F×θ)| ≤ 0.025.

[0083] 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 of the maximum field of view of the optical lens satisfy the following condition: 1.4 ≥ (H / 2) / (F×tan(θ / 2)) ≥ 0.8. Controlling this condition ensures that the ideal image height and the actual image height tend to be consistent, which is beneficial for achieving small distortion. Preferably, 1.2 ≥ (H / 2) / (F×tan(θ / 2)) ≥ 0.85.

[0084] In this embodiment, the combined focal length F34 of the third and fourth lenses satisfies the following relationship with the total focal length F of the optical lens: 0.1 ≤ F34 / F ≤ 1.6. A smaller combined focal length of the third and fourth lenses is beneficial for compressing the height of edge rays and reducing the lens aperture. Preferably, 0.25 ≤ F34 / F ≤ 1.5.

[0085] In this embodiment, the sagitta SAG8 of the second side surface of the fourth lens and the maximum effective aperture D8 of the second side surface of the fourth lens satisfy the condition: |SAG8 / D8|≤0.5. A smaller sagitta of the second side surface of the fourth lens ensures less light refraction, which helps reduce system sensitivity. Preferably, |SAG8 / D8|≤0.35.

[0086] In this embodiment, the maximum effective aperture D9 of the first side of the fifth lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: 3.5 ≥ D9 / H ≥ 1.5. With the same imaging plane and the same image height, a larger aperture in the last lens is beneficial for achieving a smaller CRA (Current Radiation Aspect Ratio). Preferably, 3 ≥ D9 / H ≥ 1.6.

[0087] In this embodiment, the total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens to the center of the imaging plane of the optical lens, satisfies the condition 0.5 ≤ TTL / F ≤ 3 with respect to the total focal length F of the optical lens. Controlling this condition is beneficial for miniaturization. Preferably, 1 ≤ TTL / F ≤ 2.5.

[0088] In this embodiment, the total air gap d_total between the centers of adjacent lenses from the first lens to the fifth lens satisfies the following condition: 0.05 ≤ d_total / TTL ≤ 0.5, which is the optical total length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens to the center of the imaging plane of the optical lens. Satisfying this condition results in a small air gap, a compact structure, and facilitates miniaturization. Preferably, 0.08 ≤ d_total / TTL ≤ 0.4. It should be noted that d_total = d^2 + d^4 + d^7 + d^9.

[0089] In this embodiment, the combined focal length F23 of the second and third lenses and the focal length F4 of the fourth lens satisfy the condition: 0.05 ≤ |F23 / F4| ≤ 30. By constraining this condition, it is beneficial to reasonably control the light rays from the second, third, and fourth lenses, resulting in a smoother light transition and improved resolution. Preferably, 0.085 ≤ |F23 / F4| ≤ 28.

[0090] In this embodiment, the focal length F3 of the third lens, the focal length F4 of the fourth lens, and the total focal length F of the optical lens satisfy the condition: 1.8 ≤ |(F3+F4) / F| ≤ 3.15. Controlling this condition helps to rationally distribute the refractive power of the first and second lenses, preventing excessive concentration of the refractive power of the combined first and second lenses, which could lead to excessive bending of the first and second lenses, or excessive weakness of the refractive power of the first and second lenses, which would be detrimental to the correction of aberrations in the optical lens, thereby helping to ensure the projection imaging quality of the optical lens. Preferably, 2 ≤ |(F3+F4) / F| ≤ 3.1.

[0091] Preferably, when |F23 / F| matches a short focal length, the combined focal length F23 of the second and third lenses satisfies the following condition with respect to the total focal length F of the optical lens: 0.2 ≤ |F23 / F| ≤ 2.5. A short focal length facilitates rapid light convergence, resulting in a short back focal length and rear port diameter, while also increasing light throughput. Furthermore, setting 0.2 ≤ |F23 / F| ≤ 2.5 within this range allows for rapid light compression, leading to a smaller rear port diameter, thus achieving 1.2 ≥ D1 / TTL ≥ 0.6 and 4 ≥ D1 / D10 ≥ 1.5. More preferably, 0.3 ≤ |F23 / F| ≤ 2. Even more preferably, 0.464 ≤ |F23 / F| ≤ 1.623. This range does not include the values ​​in Examples 13 and 14.

[0092] In this embodiment, when |F23 / F| matches a long focal length, the combined focal length F23 of the second and third lenses satisfies the following relationship with the total focal length F of the optical lens: 16 ≤ |F23 / F| ≤ 30. This facilitates a smooth transition of light and reduces sensitivity. Preferably, 16.5 ≤ |F23 / F| ≤ 29.5. More preferably, 18.852 ≤ |F23 / F| ≤ 29.897. This range does not include the values ​​in Examples 13 and 14.

[0093] In this embodiment, the radius of curvature R5 of the first side surface of the third lens and the focal length F3 of the third lens satisfy the following condition: 0.2 ≤ R5 / F3 ≤ 1.7. Controlling this range allows for the rapid convergence of large-angle light rays, shortening the light convergence optical path and thus achieving a short back focal length. Preferably, 0.35 ≤ R5 / F3 ≤ 1.55. More preferably, 0.523 ≤ R5 / F3 ≤ 1.463. This range does not include the values ​​in Examples 13 and 14.

[0094] In this embodiment, the radius of curvature R2 of the second side surface of the first lens and the radius of curvature R4 of the second side surface of the second lens satisfy the following condition: -3 ≤ R2 / R4 ≤ -1. When the ratio of R2 to R4 is within this range, large-angle light rays can be bent, allowing them to enter the rear group, thereby achieving a large FOV and a small FNO. Preferably, -2.8 ≤ R2 / R4 ≤ -1.5. More preferably, -2.483 ≤ R2 / R4 ≤ -1.990. This range does not include the values ​​in Examples 13 and 14.

[0095] In this embodiment, the sagitta of the first side surface of the first lens, sag1, and the sagitta of the second side surface of the first lens, sag2, satisfy the following condition: -0.6 ≤ sag1 / sag2 ≤ -0.2. The sagitta of the first side surface of the first lens being smaller than the sagitta of the second side surface of the first lens facilitates a smoother entry of the initial source light into the optical structure, reducing sensitivity. Preferably, -0.55 ≤ sag1 / sag2 ≤ -0.22. More preferably, -0.495 ≤ sag1 / sag2 ≤ -0.265. This range does not include the values ​​in Examples 13 and 14.

[0096] According to another aspect of the present invention, an electronic device is provided, including the aforementioned optical lens and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

[0097] Optionally, the aforementioned optical lens may also include a color filter for correcting color deviation and a protective glass for protecting the photosensitive element located on the imaging surface.

[0098] The optical lens in this application may employ multiple lenses, such as the five lenses mentioned above. This application does not specifically limit the number of spherical and aspherical lenses; when image quality is a primary concern, the number of aspherical lenses can be increased. The characteristic of an aspherical lens is that its curvature changes continuously 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 superior curvature radius characteristics, offering advantages in improving distortion and astigmatism. By using aspherical lenses, aberrations occurring during imaging can be eliminated as much as possible, thereby improving image quality.

[0099] In this exemplary embodiment, the solution is not limited to plastic or glass for the lenses. If temperature performance is a primary concern, the first, second, third, fourth, and fifth 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 can prevent lens blurring caused by high and low temperature variations in the operating environment, thus avoiding impact on the normal use of the optical lens. For example, an all-glass optical lens has a wider temperature range, maintaining stable optical performance within the range of -40℃ to 105℃. Specifically, when resolution and reliability are of primary concern, the first to fifth lenses can all be aspherical glass lenses. Of course, in applications with lower temperature stability requirements, the first to fifth 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 fifth lenses in the optical lens can also be made of a combination of plastic and glass.

[0100] This application also provides an electronic device, including the aforementioned optical lens and an imaging element that converts 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.

[0101] 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 five lenses are described as an example in the embodiments, the optical lens is not limited to including five lenses. If necessary, the optical lens may also include other numbers of lenses.

[0102] 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.

[0103] It should be noted that any of the following examples, from Example 1 to Example 18, are applicable to all embodiments of this application.

[0104] Example 1

[0105] like Figure 1 The diagram shown is a schematic of the optical lens structure of Example 1.

[0106] like Figure 1 As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, and imaging plane IMA.

[0107] The first lens L1 has positive optical power, and its first side surface S1 and second side surface S2 are both convex. The second lens L2 has negative optical power, and its first side surface S3 and second side surface S4 are both concave. The third lens L3 has positive optical power, and its first side surface S5 and second side surface S6 are both convex. The fourth lens L4 has positive optical power, and its first side surface S7 and second side surface S8 are both concave. The fifth lens L5 has negative optical power, and its first side surface S9 and second side surface S10 are both concave.

[0108] In this example, the total focal length F of the optical lens is 33.407mm, the maximum field of view (FOV) of the optical lens is 25.005°, and the total optical length (TTL) of the optical lens is 72.866mm.

[0109] Table 1 shows the basic structural parameters of the optical lens in Example 1, where the units for radius of curvature and thickness / distance are millimeters (mm).

[0110] Table 1

[0111] Surf Radius Thickness Nd Vd 1 68.785 10.396 1.49 51.42 2 -32.473 9.009 3 120.478 6.965 1.58 27.55 4 14.961 10.467 STO Infinity -2.298 5 54.465 10.440 1.62 56.71 6 -47.265 0.711 7 26.439 10.242 1.73 54.68 8 1967.613 0.264 9 70.545 10.030 1.85 23.78 10 27.004 6.640 IMA

[0112] In Example 1, the surface shape of each aspherical lens can be defined using, but is not limited to, the following aspherical formula:

[0113]

[0114] Where x is the distance vector from the vertex of the aspherical surface at a height h along the optical axis; c is the paraxial curvature of the aspherical surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient; A, B, C, D, E, F, and G are all higher-order coefficients. Table 2 below shows the conic coefficient k and the higher-order coefficients A, B, C, D, E, F, and G that can be used for the aspherical lens surfaces S1, S2, S3, and S4 in Example 1.

[0115] Table 2

[0116] Higher order terms 4 6 8 10 12 14 16 Surf K A B C D E F G 1 -1.4284 -7.6759E-06 1.0148E-09 1.1019E-11 2.5253E-15 -3.3109E-18 8.1921E-22 -3.4144E-23 2 -7.1588 -5.0330E-06 1.8630E-08 -1.7749E-11 1.4185E-14 1.0332E-17 -1.5893E-20 -2.5280E-23 3 23.6880 4.2750E-06 1.4977E-08 -8.8713E-11 9.5584E-14 -1.8944E-17 -1.1019E-20 -3.2235E-23 4 -1.0204 -1.6688E-05 3.4646E-08 -1.4130E-10 2.0379E-13 -7.4141E-17 9.7781E-20 -1.8604E-22

[0117] Figure 19 The MTF curve of the optical lens in this example is shown. The graph shows that the center field of view (20 lines) is above 0.3, indicating good performance. Of course, the architectures in other examples of this application can also achieve similar performance.

[0118] Example 2

[0119] like Figure 2 The diagram shown is a schematic of the optical lens structure for Example 2. For the sake of brevity, descriptions similar to those in Example 1 will be omitted in this example and the following examples.

[0120] like Figure 2 As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, and imaging plane IMA.

[0121] The first lens L1 has positive optical power, with its first side surface S1 being convex and its second side surface S2 being convex. The second lens L2 has negative optical power, with its first side surface S3 being convex and its second side surface S4 being concave. The third lens L3 has positive optical power, with its first side surface S5 being convex and its second side surface S6 being convex. The fourth lens L4 has negative optical power, with its first side surface S7 being convex and its second side surface S8 being concave. The fifth lens L5 has positive optical power, with its first side surface S9 being convex and its second side surface S10 being concave.

[0122] In this example, the total focal length F of the optical lens is 44.698mm, the maximum field of view (FOV) of the optical lens is 16.051°, and the total optical length (TTL) of the optical lens is 81.903mm.

[0123] 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).

[0124] Table 3

[0125] Surf Radius Thickness Nd Vd 1 65.595 14.932 1.49 57.44 2 -21.281 10.188 3 80.000 4.000 1.58 27.55 4 10.696 12.717 STO unlimited 0.298 5 88.338 8.293 1.62 60.37 6 -63.239 2.549 7 20.599 12.161 1.52 58.95 8 13.213 2.947 9 16.945 8.993 1.80 46.57 10 154.933 4.826 IMA 0.000

[0126] Table 4 below shows the conic coefficient k and the coefficients A and B of each higher-order term that can be used for the aspherical lens surfaces S1, S2, and S4 in Example 2.

[0127] Table 4

[0128] Higher order terms 4 6 Surf K A B 1 -7.1211 8.6473E-07 -1.9842E-09 2 -6.1420 -6.1030E-08 -2.3970E-10 4 -2.9175 5.7513E-07 -1.5894E-09

[0129] Example 3

[0130] like Figure 3 The diagram shown is a schematic of the optical lens structure in Example 3.

[0131] like Figure 3 As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, and imaging plane IMA.

[0132] The first lens L1 has positive optical power, and its first side surface S1 and second side surface S2 are both convex. The second lens L2 has negative optical power, and its first side surface S3 and second side surface S4 are both concave. The third lens L3 has positive optical power, and its first side surface S5 and second side surface S6 are both convex. The fourth lens L4 has positive optical power, and its first side surface S7 and second side surface S8 are both convex. The fifth lens L5 has positive optical power, and its first side surface S9 and second side surface S10 are both concave.

[0133] In this example, the total focal length F of the optical lens is 33.662mm, the maximum field of view (FOV) of the optical lens is 25.006°, and the total optical length (TTL) of the optical lens is 69.375mm.

[0134] 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).

[0135] Table 5

[0136] Surf Radius Thickness Nd Vd 1 64.846 14.669 1.49 51.42 2 -16.632 4.487 3 34.495 6.210 1.58 27.55 4 6.913 13.298 STO Infinity -4.302 5 34.420 8.278 1.61 60.61 6 -81.208 0.471 7 28.819 9.235 1.62 60.37 8 -300.028 0.197 9 38.219 10.470 1.81 40.95 10 34.198 6.362 IMA

[0137] Table 6 below shows the conic coefficient k and the coefficients A, B, C, D, E, F, and G of each higher-order term that can be used for the aspherical lens surfaces S1, S2, S3, and S4 in Example 3.

[0138] Table 6

[0139] Higher order terms 4 6 8 10 12 14 16 Surf K A B C D E F G 1 -3.3085 -8.7565E-06 1.5699E-08 -3.1154E-11 2.9163E-14 2.7855E-19 2.3487E-21 -6.4287E-24 2 -5.4571 2.6349E-06 -8.0758E-09 9.7944E-12 -2.7785E-15 6.6740E-18 3.6063E-21 -1.5827E-24 3 -5.4131 -1.1039E-05 1.3843E-08 1.0545E-11 -1.5922E-14 -2.3498E-17 -3.0827E-20 6.9911E-23 4 -1.8722 2.0365E-05 -1.2146E-07 4.5941E-10 -7.8355E-13 2.7497E-17 1.0098E-18 -4.0277E-22

[0140] Figure 20 The MTF curve of the optical lens in this example is shown. The graph shows that the center field of view (20 lines) is above 0.3, indicating good performance. Of course, the architectures in other examples of this application can also achieve similar performance.

[0141] Example 4

[0142] like Figure 4 The diagram shown is a schematic of the optical lens structure of Example 4.

[0143] like Figure 4 As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, and imaging plane IMA.

[0144] The first lens L1 has positive optical power, its first side surface S1 is convex, and its second side surface S2 is flat. The second lens L2 has negative optical power, its first side surface S3 is convex, and its second side surface S4 is concave. 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 negative optical power, its first side surface S9 is convex, and its second side surface S10 is concave.

[0145] In this example, the total focal length F of the optical lens is 33.017mm, the maximum field of view (FOV) of the optical lens is 25.016°, and the total optical length (TTL) of the optical lens is 73.902mm.

[0146] 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).

[0147] Table 7

[0148] Surf Radius Thickness Nd Vd 1 35.224 9.267 1.49 51.42 2 Infinity 11.827 3 88.964 4.029 1.58 27.55 4 25.827 11.128 STO Infinity -0.986 5 113.999 10.203 1.64 60.20 6 -42.350 0.100 7 31.024 11.304 1.73 54.67 8 -523.352 0.100 9 38.430 8.555 1.81 25.48 10 18.112 8.374 IMA

[0149] Table 8 below shows the conic coefficient k and the coefficients A, B, C, and D of each higher-order term that can be used for the aspherical lens surfaces S1, S3, and S4 in Example 4.

[0150] Table 8

[0151] Higher order terms 4 6 8 10 Surf K A B C D 1 -1.3187 -2.3136E-06 -8.9957E-10 2.9862E-12 -1.3214E-14 3 -92.0350 -4.3345E-06 3.1724E-08 -8.8701E-11 9.1645E-14 4 -1.1523 -1.4616E-06 4.2314E-08 -1.5780E-10 1.7291E-13

[0152] Example 5

[0153] like Figure 5 The diagram shown is a schematic of the optical lens structure of Example 5.

[0154] like Figure 5 As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, and imaging plane IMA.

[0155] The first lens L1 has positive 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 convex, and its second side surface S4 is concave. 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 negative optical power, its first side surface S9 is convex, and its second side surface S10 is concave.

[0156] In this example, the total focal length F of the optical lens is 33.154mm, the maximum field of view (FOV) of the optical lens is 25.016°, and the total optical length (TTL) of the optical lens is 74.855mm.

[0157] Table 9 shows the basic structural parameters of the optical lens in Example 5, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm).

[0158] Table 9

[0159] Surf Radius Thickness Nd Vd 1 34.537 9.320 1.49 51.42 2 400.000 11.867 3 88.084 5.380 1.58 27.55 4 25.962 10.854 STO Infinity -1.285 5 109.567 9.926 1.64 60.20 6 -42.911 0.100 7 30.763 11.615 1.73 54.67 8 -529.219 0.100 9 38.231 8.606 1.81 25.48 10 18.182 8.372 IMA

[0160] Table 10 below shows the conic coefficient k and the coefficients A, B, C, and D of each higher-order term that can be used for the aspherical lens surfaces S1, S3, and S4 in Example 5.

[0161] Table 10

[0162] Higher order terms 4 6 8 10 Surf K A B C D 1 -1.2175 -2.1250E-06 -8.5369E-10 2.9645E-12 -1.3280E-14 3 -75.3270 -4.3110E-06 3.1617E-08 -8.8927E-11 9.1657E-14 4 -1.1523 -1.5445E-06 4.1942E-08 -1.5711E-10 1.7278E-13

[0163] Example 6

[0164] like Figure 6 The diagram shown is a schematic of the optical lens structure of Example 6.

[0165] like Figure 6As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, and imaging plane IMA.

[0166] The first lens L1 has positive optical power, and its first side surface S1 and second side surface S2 are both convex. The second lens L2 has negative optical power, and its first side surface S3 and second side surface S4 are both concave. The third lens L3 has positive optical power, and its first side surface S5 and second side surface S6 are both convex. The fourth lens L4 has positive optical power, and its first side surface S7 and second side surface S8 are both concave. The fifth lens L5 has positive optical power, and its first side surface S9 and second side surface S10 are both concave.

[0167] In this example, the total focal length F of the optical lens is 33.659mm, the maximum field of view (FOV) of the optical lens is 25.005°, and the total optical length (TTL) of the optical lens is 69.104mm.

[0168] 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).

[0169] Table 11

[0170]

[0171]

[0172] Table 12 below shows the conic coefficient k and the coefficients A, B, C, D, E, F, and G of each higher-order term that can be used for the aspherical lens surfaces S1, S2, S3, and S4 in Example Six.

[0173] Table 12

[0174] Higher order terms 4 6 8 10 12 14 16 Surf K A B C D E F G 1 -3.6081 -8.6901E-06 1.5749E-08 -3.1108E-11 2.9138E-14 1.8596E-19 2.2217E-21 -6.0303E-24 2 -5.3673 2.7150E-06 -8.2229E-09 9.6028E-12 -2.7638E-15 7.0165E-18 4.1066E-21 -1.7225E-24 3 -5.3012 -1.0860E-05 1.3692E-08 1.0596E-11 -1.5676E-14 -2.2722E-17 -2.7257E-20 8.1726E-23 4 -1.8892 2.0296E-05 -1.2153E-07 4.6083E-10 -7.7884E-13 3.9361E-17 1.0165E-18 -4.1480E-22

[0175] Figure 21 The MTF curve of the optical lens in this example is shown. The graph shows that the center field of view (20 lines) is above 0.3, indicating good performance. Of course, the architectures in other examples of this application can also achieve similar performance.

[0176] Example 7

[0177] like Figure 7 The diagram shown is a schematic of the optical lens structure of Example 7.

[0178] like Figure 7As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, and imaging plane IMA.

[0179] The first lens L1 has positive optical power, and its first side surface S1 and second side surface S2 are both convex. The second lens L2 has negative optical power, and its first side surface S3 and second side surface S4 are both concave. The third lens L3 has positive optical power, and its first side surface S5 and second side surface S6 are both convex. The fourth lens L4 has positive optical power, and its first side surface S7 and second side surface S8 are both flat. The fifth lens L5 has positive optical power, and its first side surface S9 and second side surface S10 are both concave.

[0180] In this example, the total focal length F of the optical lens is 33.707mm, the maximum field of view (FOV) of the optical lens is 25.006°, and the total optical length (TTL) of the optical lens is 69.116mm.

[0181] Table 13 shows the basic structural parameters of the optical lens of Example 7, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm).

[0182] Table 13

[0183]

[0184]

[0185] Table 14 below shows the conic coefficient k and the coefficients A, B, C, D, E, F, and G of each higher-order term that can be used for the aspherical lens surfaces S1, S2, S3, and S4 in Example 7.

[0186] Table 14

[0187] Higher order terms 4 6 8 10 12 14 16 Surf K A B C D E F G 1 -3.6651 -8.8383E-06 1.5685E-08 -3.1071E-11 2.9183E-14 2.1053E-19 2.2920E-21 -5.9437E-24 2 -5.3635 2.7436E-06 -8.2024E-09 9.6076E-12 -2.7487E-15 7.0647E-18 4.1439E-21 -1.6687E-24 3 -5.4083 -1.0945E-05 1.4022E-08 1.0668E-11 -1.5944E-14 -2.3619E-17 -2.9751E-20 7.3815E-23 4 -1.8764 2.0021E-05 -1.2211E-07 4.6061E-10 -7.7904E-13 3.6479E-17 1.0199E-18 -4.2329E-22

[0188] Figure 22 The MTF curve of the optical lens in this example is shown. The graph shows that the center field of view (20 lines) is above 0.3, indicating good performance. Of course, the architectures in other examples of this application can also achieve similar performance.

[0189] Example 8

[0190] like Figure 8 The diagram shown is a schematic of the optical lens structure of Example 8.

[0191] like Figure 8As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, and imaging plane IMA.

[0192] The first lens L1 has positive optical power, and its first side surface S1 and second side surface S2 are both convex. The second lens L2 has negative optical power, and its first side surface S3 and second side surface S4 are both concave. The third lens L3 has positive optical power, and its first side surface S5 and second side surface S6 are both flat. The fourth lens L4 has positive optical power, and its first side surface S7 and second side surface S8 are both convex. The fifth lens L5 has positive optical power, and its first side surface S9 and second side surface S10 are both concave.

[0193] In this example, the total focal length F of the optical lens is 33.656mm, the maximum field of view (FOV) of the optical lens is 25.006°, and the total optical length (TTL) of the optical lens is 69.030mm.

[0194] Table 15 shows the basic structural parameters of the optical lens of Example 8, where the units for radius of curvature (Radius) and thickness (Thickness / Distance) are millimeters (mm).

[0195] Table 15

[0196]

[0197]

[0198] Table 16 below shows the conic coefficient k and the coefficients A, B, C, D, E, F, and G of each higher-order term that can be used for the aspherical lens surfaces S1, S2, S3, and S4 in Example 8.

[0199] Table 16

[0200] Higher order terms 4 6 8 10 12 14 16 Surf K A B C D E F G 1 -2.9627 -8.7184E-06 1.5654E-08 -3.1370E-11 2.8934E-14 1.6755E-19 2.5905E-21 -6.0529E-24 2 -5.6843 2.3982E-06 -8.0948E-09 9.8004E-12 -2.8752E-15 6.3706E-18 3.2707E-21 -1.3971E-24 3 -4.7726 -1.0627E-05 1.4307E-08 1.1449E-11 -1.5321E-14 -2.4228E-17 -3.5868E-20 4.5318E-23 4 -1.8375 2.1864E-05 -1.1972E-07 4.6900E-10 -8.0027E-13 -1.7821E-17 9.1289E-19 -3.5062E-22

[0201] Figure 23 The MTF curve of the optical lens in this example is shown. The graph shows that the center field of view (20 lines) is above 0.3, indicating good performance. Of course, the architectures in other examples of this application can also achieve similar performance.

[0202] Example 9

[0203] like Figure 9 The diagram shown is a schematic of the optical lens structure of Example 9.

[0204] like Figure 9As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, and imaging plane IMA.

[0205] The first lens L1 has positive optical power, with its first side surface S1 being convex and its second side surface S2 being convex. The second lens L2 has negative optical power, with its first side surface S3 being convex and its second side surface S4 being concave. The third lens L3 has positive optical power, with its first side surface S5 being convex and its second side surface S6 being concave. The fourth lens L4 has positive optical power, with its first side surface S7 being convex and its second side surface S8 being convex. The fifth lens L5 has positive optical power, with its first side surface S9 being convex and its second side surface S10 being concave.

[0206] In this example, the total focal length F of the optical lens is 33.698mm, the maximum field of view (FOV) of the optical lens is 25.006°, and the total optical length (TTL) of the optical lens is 69.270mm.

[0207] Table 17 shows the basic structural parameters of the optical lens of Example 9, where the units for radius of curvature and thickness / distance are millimeters (mm).

[0208] Table 17

[0209]

[0210]

[0211] Table 18 below shows the conic coefficient k and the coefficients A, B, C, D, E, F, and G of each higher-order term that can be used for the aspherical lens surfaces S1, S2, S3, and S4 in Example 9.

[0212] Table 18

[0213] Higher order terms 4 6 8 10 12 14 16 Surf K A B C D E F G 1 -2.5020 -8.5438E-06 1.5640E-08 -3.1635E-11 2.8668E-14 7.0451E-20 2.5419E-21 -6.9089E-24 2 -5.6599 2.5020E-06 -7.9260E-09 9.8288E-12 -3.2268E-15 5.5675E-18 2.4412E-21 -7.6583E-25 3 -4.4017 -1.0181E-05 1.4766E-08 1.1047E-11 -1.7567E-14 -2.9085E-17 -3.6779E-20 7.9098E-23 4 -1.8406 2.2644E-05 -1.1916E-07 4.6766E-10 -8.0540E-13 -2.3662E-17 9.3645E-19 -1.7594E-22

[0214] Figure 24 The MTF curve of the optical lens in this example is shown. The graph shows that the center field of view (20 lines) is above 0.3, indicating good performance. Of course, the architectures in other examples of this application can also achieve similar performance.

[0215] Example 10

[0216] like Figure 10 The diagram shown is a schematic of the optical lens structure of Example 10.

[0217] like Figure 10As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, and imaging plane IMA.

[0218] The first lens L1 has positive optical power, and its first side surface S1 and second side surface S2 are both convex. The second lens L2 has negative optical power, and its first side surface S3 and second side surface S4 are both concave. The third lens L3 has positive optical power, and its first side surface S5 and second side surface S6 are both convex. The fourth lens L4 has positive optical power, and its first side surface S7 and second side surface S8 are both concave. The fifth lens L5 has negative optical power, and its first side surface S9 and second side surface S10 are both concave.

[0219] In this example, the total focal length F of the optical lens is 33.640mm, the maximum field of view (FOV) of the optical lens is 25.006°, and the total optical length (TTL) of the optical lens is 72.540mm.

[0220] Table 19 shows the basic structural parameters of the optical lens of Example 10, where the units for radius of curvature and thickness / distance are millimeters (mm).

[0221] Table 19

[0222]

[0223]

[0224] Table 20 below shows the conic coefficient k and the coefficients A, B, C, D, E, F, and G of each higher-order term that can be used for the aspherical lens surfaces S1, S2, S3, and S4 in Example 10.

[0225] Table 20

[0226] Higher order terms 4 6 8 10 12 14 16 Surf K A B C D E F G 1 -6.9339 -8.0848E-06 2.0727E-09 1.3151E-11 2.8562E-15 -3.9810E-18 8.9058E-22 -3.6672E-23 2 -6.2563 -5.1407E-06 1.7483E-08 -1.4633E-11 1.6022E-14 1.2860E-17 -2.0961E-20 -2.9324E-23 3 18.5570 6.8661E-06 1.3195E-08 -9.0872E-11 9.7470E-14 -9.0281E-18 -9.1196E-21 -4.5320E-23 4 -1.0243 -1.7017E-05 3.5875E-08 -1.3969E-10 1.9515E-13 -7.7964E-17 9.7389E-20 -1.7874E-22

[0227] Example 11

[0228] like Figure 11 The diagram shown is a schematic of the optical lens structure of Example 11.

[0229] like Figure 11 As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, and imaging plane IMA.

[0230] The first lens L1 has positive optical power, with its first side surface S1 being convex and its second side surface S2 being convex. The second lens L2 has negative optical power, with its first side surface S3 being convex and its second side surface S4 being concave. The third lens L3 has positive optical power, with its first side surface S5 being convex and its second side surface S6 being convex. The fourth lens L4 has negative optical power, with its first side surface S7 being convex and its second side surface S8 being concave. The fifth lens L5 has positive optical power, with its first side surface S9 being convex and its second side surface S10 being concave.

[0231] In this example, the total focal length F of the optical lens is 44.698mm, the maximum field of view (FOV) of the optical lens is 16.051°, and the total optical length (TTL) of the optical lens is 81.903mm.

[0232] Table 21 shows the basic structural parameters of the optical lens in Example 11, where the units for radius of curvature and thickness / distance are millimeters (mm).

[0233] Table 21

[0234]

[0235]

[0236] Table 22 below shows the conic coefficient k and the coefficients A and B of each higher-order term that can be used for the aspherical lens surfaces S1, S2, and S4 in Example 11.

[0237] Table 22

[0238] Higher order terms 4 6 Surf K A B 1 -25.6230 2.3691E-06 -1.3589E-08 2 -4.1262 1.0496E-06 -8.2553E-09 4 -2.0064 1.9674E-05 -4.4389E-08

[0239] Example 12

[0240] like Figure 12 The diagram shown is a schematic of the optical lens structure of Example Twelve.

[0241] like Figure 12 As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, and imaging plane IMA.

[0242] The first lens L1 has positive optical power, and its first side surface S1 and second side surface S2 are both convex. The second lens L2 has negative optical power, and its first side surface S3 and second side surface S4 are both concave. The third lens L3 has positive optical power, and its first side surface S5 and second side surface S6 are both convex. The fourth lens L4 has positive optical power, and its first side surface S7 and second side surface S8 are both convex. The fifth lens L5 has negative optical power, and its first side surface S9 and second side surface S10 are both concave.

[0243] In this example, the total focal length F of the optical lens is 33.646mm, the maximum field of view (FOV) of the optical lens is 25.006°, and the total optical length (TTL) of the optical lens is 69.431mm.

[0244] Table 23 shows the basic structural parameters of the optical lens of Example Twelve, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm).

[0245] Table 23

[0246] Surf Radius Thickness Nd Vd 1 64.946 14.691 1.49 51.42 2 -16.637 4.497 3 34.654 6.218 1.58 27.55 4 6.899 13.226 STO Infinity -4.322 5 34.492 8.380 1.61 60.61 6 -81.898 0.509 7 28.927 9.221 1.62 60.37 8 -206.182 0.194 9 38.515 10.446 1.81 40.95 10 33.521 6.372 IMA

[0247] Table 24 below shows the conic coefficient k and the coefficients A, B, C, D, E, F, and G of each higher-order term that can be used for the aspherical lens surfaces S1, S2, S3, and S4 in Example Twelve.

[0248] Table 24

[0249] Higher order terms 4 6 8 10 12 14 16 Surf K A B C D E F G 1 -3.3151 -8.7554E-06 1.5712E-08 -3.1141E-11 2.9173E-14 2.7768E-19 2.3529E-21 -6.4418E-24 2 -5.4727 2.6265E-06 -8.0927E-09 9.7597E-12 -2.7770E-15 6.6704E-18 3.6544E-21 -1.4915E-24 3 -5.4517 -1.1082E-05 1.3767E-08 1.0395E-11 -1.6251E-14 -2.4261E-17 -3.2616E-20 6.5128E-23 4 -1.8692 2.0508E-05 -1.2127E-07 4.5962E-10 -7.8425E-13 2.1047E-17 9.8768E-19 -4.8663E-22

[0250] Example Thirteen

[0251] like Figure 13 The diagram shown is a schematic of the optical lens structure of Example Thirteen.

[0252] like Figure 13 As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, and imaging plane IMA.

[0253] The first lens L1 has positive optical power, its first side surface S1 is convex, and its second side surface S2 is flat. The second lens L2 has negative optical power, its first side surface S3 is convex, and its second side surface S4 is concave. 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 negative optical power, its first side surface S9 is convex, and its second side surface S10 is concave.

[0254] In this example, the total focal length F of the optical lens is 33.017mm, the maximum field of view (FOV) of the optical lens is 25.015°, and the total optical length (TTL) of the optical lens is 73.701mm.

[0255] Table 25 shows the basic structural parameters of the optical lens of Example Thirteen, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm).

[0256] Table 25

[0257] Surf Radius Thickness Nd Vd 1 35.279 9.268 1.49 51.42 2 Infinity 11.846 3 89.870 4.025 1.58 27.55 4 25.940 10.789 STO Infinity -1.013 5 114.301 10.411 1.64 60.20 6 -42.340 0.100 7 31.164 11.257 1.73 54.67 8 -422.100 0.100 9 38.518 8.519 1.81 25.48 10 18.070 8.400 IMA

[0258] Table 26 below shows the conic coefficient k and the coefficients A, B, C, D, E, F, and G of each higher-order term that can be used for the aspherical lens surfaces S1, S2, S3, and S4 in Example Thirteen.

[0259] Table 26

[0260] Higher order terms 4 6 8 10 12 14 16 Surf K A B C D E F G 1 -1.2970 -2.2831E-06 -9.6389E-10 2.8618E-12 -1.3312E-14 -3.8904E-20 1.0627E-22 3.6223E-25 3 -95.6910 -4.3507E-06 3.1671E-08 -8.8768E-11 9.1660E-14 1.7978E-19 6.5354E-22 1.7192E-24 4 -1.1523 -1.4861E-06 4.2338E-08 -1.5769E-10 1.7311E-13 1.9595E-19 5.4088E-23 -8.2587E-25

[0261] Example Fourteen

[0262] like Figure 14 The diagram shown is a schematic of the optical lens structure of Example Fourteen.

[0263] like Figure 14 As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, and imaging plane IMA.

[0264] The first lens L1 has positive 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 convex, and its second side surface S4 is concave. 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 negative optical power, its first side surface S9 is convex, and its second side surface S10 is concave.

[0265] In this example, the total focal length F of the optical lens is 33.144mm, the maximum field of view (FOV) of the optical lens is 25.016°, and the total optical length (TTL) of the optical lens is 74.582mm.

[0266] Table 27 shows the basic structural parameters of the optical lens of Example Fourteen, where the units for radius of curvature (Radius) and thickness (Thickness / Distance) are millimeters (mm).

[0267] Table 27

[0268] Surf Radius Thickness Nd Vd 1 34.750 9.185 1.49 51.42 2 500.000 11.797 3 89.190 5.247 1.58 27.55 4 26.085 10.789 STO Infinity -1.232 5 109.901 10.091 1.64 60.20 6 -42.906 0.100 7 30.882 11.552 1.73 54.67 8 -504.032 0.100 9 38.463 8.578 1.81 25.48 10 18.223 8.376 IMA

[0269] Table 28 below shows the conic coefficient k and the coefficients A, B, C, and D of each higher-order term that can be used for the aspherical lens surfaces S1, S3, and S4 in Example Fourteen.

[0270] Table 28

[0271]

[0272]

[0273] Example 15

[0274] like Figure 15 The diagram shown is a schematic of the optical lens structure of Example 15.

[0275] like Figure 15 As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, and imaging plane IMA.

[0276] The first lens L1 has positive optical power, and its first side surface S1 and second side surface S2 are both convex. The second lens L2 has negative optical power, and its first side surface S3 and second side surface S4 are both concave. The third lens L3 has positive optical power, and its first side surface S5 and second side surface S6 are both convex. The fourth lens L4 has positive optical power, and its first side surface S7 and second side surface S8 are both concave. The fifth lens L5 has positive optical power, and its first side surface S9 and second side surface S10 are both concave.

[0277] In this example, the total focal length F of the optical lens is 33.695mm, the maximum field of view (FOV) of the optical lens is 25.006°, and the total optical length (TTL) of the optical lens is 69.508mm.

[0278] Table 29 shows the basic structural parameters of the optical lens of Example 15, where the units for radius of curvature (Radius) and thickness (Thickness / Distance) are millimeters (mm).

[0279] Table 29

[0280] Surf Radius Thickness Nd Vd 1 67.680 14.612 1.49 51.42 2 -16.966 4.612 3 33.989 6.281 1.58 27.55 4 7.064 13.067 STO Infinity -4.319 5 32.331 9.038 1.61 60.61 6 -72.789 0.193 7 28.223 9.110 1.62 60.37 8 100.000 0.199 9 34.252 10.908 1.81 40.95 10 40.873 5.809 IMA

[0281] Table 30 below shows the conic coefficient k and the coefficients A, B, C, D, E, F, and G of each higher-order term that can be used for the aspherical lens surfaces S1, S2, S3, and S4 in Example Fifteen.

[0282] Table 30

[0283] Higher order terms 4 6 8 10 12 14 16 Surf K A B C D E F G 1 -3.7445 -8.4450E-06 1.5820E-08 -3.1283E-11 2.8968E-14 1.1847E-19 2.2396E-21 -5.9566E-24 2 -5.4668 2.7151E-06 -8.1344E-09 9.6440E-12 -2.7962E-15 6.9108E-18 3.9883E-21 -1.8177E-24 3 -5.2660 -1.0199E-05 1.4054E-08 1.0997E-11 -1.5106E-14 -2.1920E-17 -3.0205E-20 8.4552E-23 4 -1.9181 2.0784E-05 -1.2112E-07 4.6149E-10 -7.7653E-13 5.3457E-17 1.0448E-18 -4.5070E-22

[0284] Example 16

[0285] like Figure 16 The diagram shown is a schematic of the optical lens structure of Example Sixteen.

[0286] like Figure 16 As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, and imaging plane IMA.

[0287] The first lens L1 has positive optical power, and its first side surface S1 and second side surface S2 are both convex. The second lens L2 has negative optical power, and its first side surface S3 and second side surface S4 are both concave. The third lens L3 has positive optical power, and its first side surface S5 and second side surface S6 are both convex. The fourth lens L4 has positive optical power, and its first side surface S7 and second side surface S8 are both flat. The fifth lens L5 has positive optical power, and its first side surface S9 and second side surface S10 are both concave.

[0288] In this example, the total focal length F of the optical lens is 33.547mm, the maximum field of view (FOV) of the optical lens is 25.005°, and the total optical length (TTL) of the optical lens is 70.001mm.

[0289] Table 31 shows the basic structural parameters of the optical lens of Example Sixteen, where the units for radius of curvature (Radius) and thickness (Thickness / Distance) are millimeters (mm).

[0290] Table 31

[0291] Surf Radius Thickness Nd Vd 1 64.313 14.752 1.49 51.42 2 -17.344 4.845 3 37.560 5.929 1.58 27.55 4 7.444 12.727 STO Infinity -3.979 5 33.910 9.872 1.61 60.61 6 -81.007 0.248 7 28.928 8.778 1.62 60.37 8 Infinity 0.201 9 37.252 10.362 1.81 40.95 10 36.471 6.266 IMA

[0292] Table 32 below shows the conic coefficient k and the coefficients A, B, C, D, E, F, and G of each higher-order term that can be used for the aspherical lens surfaces S1, S2, S3, and S4 in Example Sixteen.

[0293] Table 32

[0294] Higher order terms 4 6 8 10 12 14 16 Surf K A B C D E F G 1 -3.6730 -8.8454E-06 1.5705E-08 -3.1027E-11 2.9237E-14 3.7397E-19 2.6129E-21 -4.9490E-24 2 -5.4155 2.5651E-06 -8.3077E-09 9.6304E-12 -2.5989E-15 7.4816E-18 4.9800E-21 -8.7793E-25 3 -4.7748 -1.0597E-05 1.4213E-08 1.0546E-11 -1.6546E-14 -2.4762E-17 -2.7996E-20 9.9619E-23 4 -1.9072 1.9917E-05 -1.2122E-07 4.6522E-10 -7.6307E-13 7.5277E-17 9.9255E-19 -1.0766E-21

[0295] Example 17

[0296] like Figure 17 The diagram shown is a schematic of the optical lens structure of Example 17.

[0297] like Figure 17 As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, and imaging plane IMA.

[0298] The first lens L1 has positive optical power, and its first side surface S1 and second side surface S2 are both convex. The second lens L2 has negative optical power, and its first side surface S3 and second side surface S4 are both concave. The third lens L3 has positive optical power, and its first side surface S5 and second side surface S6 are both flat. The fourth lens L4 has positive optical power, and its first side surface S7 and second side surface S8 are both convex. The fifth lens L5 has positive optical power, and its first side surface S9 and second side surface S10 are both concave.

[0299] In this example, the total focal length F of the optical lens is 33.636mm, the maximum field of view (FOV) of the optical lens is 25.006°, and the total optical length (TTL) of the optical lens is 69.127mm.

[0300] Table 33 shows the basic structural parameters of the optical lens of Example 17, where the units for radius of curvature (Radius) and thickness (Thickness / Distance) are millimeters (mm).

[0301] Table 33

[0302] Surf Radius Thickness Nd Vd 1 63.096 14.789 1.49 51.42 2 -16.828 4.319 3 31.390 6.173 1.58 27.55 4 6.825 13.061 STO Infinity -4.273 5 32.796 6.526 1.61 60.61 6 Infinity 0.555 7 33.874 9.866 1.62 60.37 8 -91.310 0.373 9 30.049 11.231 1.81 40.95 10 35.832 6.506 IMA

[0303] Table 34 below shows the conic coefficient k and the coefficients A, B, C, D, E, F, and G of each higher-order term that can be used for the aspherical lens surfaces S1, S2, S3, and S4 in Example Seventeen.

[0304] Table 34

[0305] Higher order terms 4 6 8 10 12 14 16 Surf K A B C D E F G 1 -2.9824 -8.7244E-06 1.5653E-08 -3.1368E-11 2.8938E-14 1.7268E-19 2.6103E-21 -6.0423E-24 2 -5.6856 2.4010E-06 -8.0937E-09 9.7347E-12 -2.8918E-15 6.3943E-18 3.2850E-21 -1.3741E-24 3 -4.6346 -1.0678E-05 1.4244E-08 1.1257E-11 -1.5634E-14 -2.5150E-17 -3.7967E-20 3.8224E-23 4 -1.8343 2.2602E-05 -1.1772E-07 4.6659E-10 -8.3691E-13 -2.6888E-17 1.1096E-18 -4.8996E-22

[0306] Example 18

[0307] like Figure 18 The diagram shown is a schematic of the optical lens structure of Example 18.

[0308] like Figure 18 As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, and imaging plane IMA.

[0309] The first lens L1 has positive optical power, with its first side surface S1 being convex and its second side surface S2 being convex. The second lens L2 has negative optical power, with its first side surface S3 being convex and its second side surface S4 being concave. The third lens L3 has positive optical power, with its first side surface S5 being convex and its second side surface S6 being concave. The fourth lens L4 has positive optical power, with its first side surface S7 being convex and its second side surface S8 being convex. The fifth lens L5 has positive optical power, with its first side surface S9 being convex and its second side surface S10 being concave.

[0310] In this example, the total focal length F of the optical lens is 33.671mm, the maximum field of view (FOV) of the optical lens is 25.006°, and the total optical length (TTL) of the optical lens is 69.397mm.

[0311] Table 35 shows the basic structural parameters of the optical lens of Example 18, where the units for radius of curvature (Radius) and thickness (Thickness / Distance) are millimeters (mm).

[0312] Table 35

[0313] Surf Radius Thickness Nd Vd 1 69.080 14.625 1.49 51.42 2 -16.738 4.124 3 28.590 6.303 1.58 27.55 4 6.744 13.677 STO Infinity -4.642 5 32.519 5.968 1.61 60.61 6 195.123 0.200 7 37.991 10.355 1.62 60.37 8 -76.995 0.623 9 26.071 11.626 1.81 40.95 10 31.979 6.540 IMA

[0314] Table 36 below shows the conic coefficient k and the coefficients A, B, C, D, E, F, and G of each higher-order term that can be used for the aspherical lens surfaces S1, S2, S3, and S4 in Example 18.

[0315] Table 36

[0316] Higher order terms 4 6 8 10 12 14 16 Surf K A B C D E F G 1 -2.6317 -8.4994E-06 1.5673E-08 -3.1632E-11 2.8695E-14 2.2210E-19 2.6210E-21 -6.8761E-24 2 -5.6567 2.4867E-06 -7.8710E-09 9.7956E-12 -3.2471E-15 5.4991E-18 3.3378E-21 -1.1763E-24 3 -4.4252 -1.0184E-05 1.4775E-08 1.1001E-11 -1.7703E-14 -2.9275E-17 -3.6677E-20 8.1026E-23 4 -1.8441 2.2664E-05 -1.1933E-07 4.6664E-10 -8.0660E-13 -4.5343E-18 9.2872E-19 -2.0846E-22

[0317] In summary, Examples 1 through 18 satisfy the relationships shown in Tables 37 and 38, respectively.

[0318] Table 37

[0319]

[0320]

[0321] Table 38

[0322]

[0323]

[0324] Tables 39 and 40 provide the total focal length F of the optical lenses for Examples 1 to 18, and the effective focal lengths F1 to F5 for each lens. (Unit: mm)

[0325] Table 39

[0326]

[0327]

[0328] Table 40

[0329] Parameters / Examples 10 11 12 13 14 15 16 17 18 F 33.640 44.698 33.646 33.017 33.144 33.695 33.547 33.636 33.671 FNO 0.680 0.685 0.680 0.680 0.680 0.680 0.680 0.680 0.680 ENPD 49.470 65.252 49.516 48.554 48.741 49.589 49.370 49.500 49.553 TTL 72.540 81.903 69.431 73.701 74.582 69.508 70.001 69.127 69.397 FOV 25.006 16.051 25.006 25.015 25.016 25.006 25.005 25.006 25.006 θ 0.436 0.280 0.436 0.437 0.437 0.436 0.436 0.436 0.436 H 14.661 12.800 14.557 14.533 14.536 14.555 14.556 14.559 14.560 TL 65.843 77.077 63.059 65.302 66.206 63.699 63.735 62.622 62.857 BFL 6.697 4.826 6.372 8.400 8.376 5.809 6.266 6.506 6.540 L 35.219 40.067 30.800 37.773 37.564 30.937 31.748 30.786 30.669 DST 38.985 39.330 34.436 42.701 42.838 34.095 33.954 33.416 33.840 F1 46.185 34.513 28.322 70.975 74.643 28.933 29.217 28.460 28.714 F2 -29.153 -21.383 -15.827 -63.276 -64.468 -16.448 -16.872 -16.206 -16.653 F3 42.010 60.400 40.321 49.335 49.268 37.398 39.930 53.001 62.172 F4 37.787 -162.265 41.121 40.020 40.072 59.850 46.196 40.682 42.073 F5 -61.761 22.857 -5359.396 -51.438 -52.541 148.515 428.228 121.518 91.546 R1 70.557 65.595 64.946 35.279 34.750 67.680 64.313 63.096 69.080 R3 112.476 80.000 34.654 89.870 89.190 33.989 37.560 31.390 28.590 R4 14.582 10.696 6.899 25.940 26.085 7.064 7.444 6.825 6.744 R5 52.182 88.338 34.492 114.301 109.901 32.331 33.910 32.796 32.519 R7 25.726 20.599 28.927 31.164 30.882 28.223 28.928 33.874 37.991 d2 10.027 10.188 4.497 11.846 11.797 4.612 4.845 4.319 4.124 d4 11.142 12.717 13.226 10.789 10.789 13.067 12.727 13.061 13.677 d7 0.711 2.549 0.509 0.100 0.100 0.193 0.248 0.555 0.200 d9 0.264 2.947 0.194 0.100 0.100 0.199 0.201 0.373 0.623 D1 50.000 54.000 52.000 50.000 50.000 52.445 52.562 52.000 52.880 D8 35.708 23.894 34.154 41.058 40.857 30.760 33.163 34.798 34.520 D9 32.359 23.877 29.763 32.930 32.956 28.691 29.539 29.674 29.368 D10 21.072 20.172 20.733 21.377 21.411 20.388 20.883 21.016 20.700 SAG8 0.532 7.568 -0.708 -0.500 -0.414 1.190 0.001 -1.673 -1.960 F34 20.747 62.112 21.692 22.676 22.676 23.529 22.676 22.960 22.960 F45 56.818 34.014 36.232 71.942 69.930 40.650 40.650 40.650 40.650 ed12 18.790 23.821 16.137 13.664 13.146 16.550 16.373 16.474 16.838 F23 -1005.732 -20.718 -42.323 113.877 113.903 -53.218 -50.120 -29.421 -26.837 sag1 2.386 2.747 3.160 6.600 6.880 3.130 3.346 3.274 3.073 sag2 -5.531 -10.387 -7.934 0.000 0.625 -7.865 -7.815 -7.928 -7.954

[0330] 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.

[0331] 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.

[0332] 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.

[0333] 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, From the first side to the second side, the following are included in sequence: A first lens having positive optical power, wherein the first side surface of the first lens is a convex surface; A second lens with negative optical power, wherein the first side of the second lens is convex and the second side is concave; A third lens with positive optical power, wherein the first side surface of the third lens is convex; A fourth lens with optical power, wherein the first side surface of the fourth lens is convex; A fifth lens with optical power, wherein the first side surface of the fifth lens is convex and the second side surface is concave; The radius of curvature R3 of the first side surface of the second lens and the focal length F2 of the second lens satisfy the following relationship: -6≤ R3 / F2≤-0.5; 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: 0.1 ≤ R7 / F ≤ 1.5; The maximum effective aperture D1 of the first side of the first lens and the maximum effective aperture D10 of the second side of the fifth lens satisfy the following condition: 4≥D1 / D10≥1.

5.

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

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

4. The optical lens according to claim 1, characterized in that, The fourth lens has positive optical power, and the second side surface of the fourth lens is concave, convex, or flat; or... The fourth lens has negative optical power, and the second side surface of the fourth lens is concave.

5. The optical lens according to claim 1, characterized in that, The fifth lens has either positive or negative optical power.

6. The optical lens according to any one of claims 1 to 5, characterized in that, The maximum effective aperture D1 of the first side of the first lens and the total optical length of the optical lens, that is, the distance TTL from the center of the first side of the first lens to the center of the imaging surface of the optical lens, satisfy the following: 1.2≥D1 / TTL≥0.

6.

7. The optical lens according to any one of claims 1 to 5, characterized in that, The radius of curvature R4 of the second side surface of the second lens and the focal length F2 of the second lens satisfy the following condition: -0.7≤R4 / F2≤-0.

3.

8. The optical lens according to any one of claims 1 to 5, characterized in that, The air gap d2 between the center of the first lens and the second lens and the air gap ed12 between the edge of the first lens and the second lens satisfy the following condition: 0.05 ≤ d2 / ed12 ≤ 1.

2.

9. The optical lens according to any one of claims 1 to 5, characterized in that, The focal length F3 of the third lens and the total focal length F of the optical lens satisfy the following condition: 0.9 ≤ F3 / F ≤ 2.

10. An electronic device, characterized in that, It includes an optical lens according to any one of claims 1 to 9 and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

Images