Optical lenses and electronic devices

Abstract

This invention provides an optical lens and an electronic device. The optical lens, from first to second side, includes: a first lens with positive optical power; a second lens with positive optical power, the first side of which is convex; a third lens with negative optical power, the first and second sides of which are concave; a fourth lens with positive optical power, the first side of which is concave and the second side is convex; and a fifth lens with positive optical power, the first side of which is convex. This invention solves the problem in existing optical lenses that it is difficult to simultaneously achieve small FNO, high resolution, low distortion, miniaturization, large angular resolution, and small CRA while accommodating a large target surface.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical imaging devices, in particular to an optical lens and an electronic device. BACKGROUND

[0002] With the increasing requirements of users on optical imaging devices, higher requirements are put forward for miniaturization, small front end and high resolution of optical lenses. Generally, most lens manufacturers will choose to increase the number of lenses to improve the resolution of the lens, but this will seriously affect the miniaturization of the lens to some extent. In addition, considering that some optical lenses need to have a large amount of light to increase the field of view, the current optical lenses either have a small amount of light or have a large amount of light but at the same time bring problems such as large CRA and large distortion.

[0003] With the continuous development and progress of technology, optical imaging devices gradually penetrate into various industries. For example, optical lenses play an irreplaceable role in intelligent detection, security monitoring, smart phones, laser radars, and automobile auxiliary driving and other fields. At the same time, in order to improve the competitiveness of their products, lens manufacturers in various fields begin to invest a lot of time and effort in the research and development of lens performance.

[0004] Especially with the development of automobile lighting technology, automobile headlights have developed from traditional lighting to considering ADB and ground projection. At present, both ADB and ground projection functions need to rely on optical lenses, and the system resolution requirement of ground projection is very high. However, the existing optical lenses are large in size, high in sensitivity, low in resolution, and high in cost, which cannot meet the mass production demand. In addition, the existing long-focus lens cannot consider large-angle resolution, which makes the environmental object recognition degree low and the central part of the detection area small.

[0005] That is, the optical lens in the prior art has the problem that it is difficult to simultaneously realize small FNO, high resolution, small distortion, miniaturization, large angle resolution, and small CRA considering large target surface. SUMMARY

[0006] The main purpose of the present application is to provide an optical lens and an electronic device to solve the problem that the optical lens in the prior art is difficult to simultaneously realize small FNO, high resolution, small distortion, miniaturization, large angle resolution, and small CRA considering large target surface.

[0007] In order to achieve the above object, according to one aspect of the present application, there is provided an optical lens comprising, in order from a first side to a second side: a first lens having positive refractive power; a second lens having positive refractive power, a first side surface of the second lens being convex; a third lens having negative refractive power, a first side surface of the third lens being concave and a second side surface of the third lens being concave; a fourth lens having positive refractive power, a first side surface of the fourth lens being concave and a second side surface of the fourth lens being convex; and a fifth lens having positive refractive power, a first side surface of the fifth lens being convex.

[0008] Further, a first side surface of the first lens is convex and a second side surface of the first lens is convex.

[0009] Further, a first side surface of the first lens is convex and a second side surface of the first lens is concave.

[0010] Further, a first side surface of the first lens is concave and a second side surface of the first lens is convex.

[0011] Further, a second side surface of the second lens is convex.

[0012] Further, a second side surface of the second lens is concave.

[0013] Further, a second side surface of the fifth lens is convex.

[0014] Further, a second side surface of the fifth lens is concave.

[0015] Further, the optical lens further comprises a stop, the stop being located between the second lens and the third lens.

[0016] Further, an optical total track length of the optical lens, i.e. a distance TTL from a first side center of a first lens of the optical lens to a center of an image plane of the optical lens, and a total focal length F of the optical lens satisfy: TTL / F≤2.2.

[0017] Further, an optical total track length of the optical lens, i.e. a distance TTL from a first side center of a first lens of the optical lens to a center of an image plane of the optical lens, a height H corresponding to a maximum field of view of the optical lens, and a maximum field of view FOV of the optical lens satisfy: TTL / H / FOV≤1.2.

[0018] Further, an optical total track length of the optical lens, i.e. a distance TTL from a first side center of a first lens of the optical lens to a center of an image plane of the optical lens, a height H corresponding to a maximum field of view of the optical lens, and an arc value θ of the maximum field of view of the optical lens satisfy: TTL / H / θ≤30.

[0019] Further, an optical total track length of the optical lens, i.e., a distance TTL from a first side center of a first lens of the optical lens to a center of an imaging surface of the optical lens, and a maximum diameter DMAX of all lenses in the optical lens satisfy: TTL / DMAX≤5.

[0020] Further, an entire group focal length F of the optical lens, an arc value θ of a maximum field of view angle of the optical lens, and a maximum light passing diameter D of a first side of the first lens corresponding to the maximum field of view angle of the optical lens satisfy: (F*θ) / D≥0.1.

[0021] Further, a maximum light passing diameter D of a first side of the first lens corresponding to the maximum field of view angle of the optical lens, an image height H corresponding to the maximum field of view angle of the optical lens, and a maximum field of view angle FOV of the optical lens satisfy: D / H / FOV≤0.8.

[0022] Further, a maximum light passing diameter D of a first side of the first lens corresponding to the maximum field of view angle of the optical lens, an image height H corresponding to the maximum field of view angle of the optical lens, and an arc value θ of the maximum field of view angle of the optical lens satisfy: D / H / θ≤18.

[0023] Further, a maximum light passing diameter D of a first side of the first lens corresponding to the maximum field of view angle of the optical lens, an image height H corresponding to the maximum field of view angle of the optical lens, and an entire group focal length F of the optical lens satisfy: D / H / F≤0.07.

[0024] Further, an image height H corresponding to the maximum field of view angle of the optical lens, an entire group focal length F of the optical lens, and an arc value θ of the maximum field of view angle of the optical lens satisfy: |(H-F*θ) / (F*θ)|≤0.1.

[0025] Further, an optical back focal length of the optical lens, i.e., a distance BFL from a second side center of a last lens of the optical lens to a center of an imaging surface, and an optical total track length of the optical lens, i.e., a distance TTL from a first side center of a first lens of the optical lens to the center of the imaging surface of the optical lens satisfy: BFL / TTL≥0.4.

[0026] Further, an optical back focal length of the optical lens, i.e., a distance BFL from a second side center of a last lens of the optical lens to a center of an imaging surface, and a lens group length of the optical lens, i.e., a distance TL from the first side center of the first lens of the optical lens to the second side center of the last lens of the optical lens satisfy: BFL / TL≥0.6.

[0027] Further, an entire group focal length F of the optical lens and an image height H corresponding to the maximum field of view angle of the optical lens satisfy: F / H≤7.

[0028] Further, an overall focal length F of the optical lens and an entrance pupil diameter ENPD of the optical lens satisfy: F / ENPD≤1.45.

[0029] Further, the overall focal length F of the optical lens, the entrance pupil diameter ENPD of the optical lens and a maximum clear aperture D of the first side surface of the first lens corresponding to the maximum field of view angle of the optical lens satisfy: F / ENPD / D≤0.04.

[0030] Further, an effective aperture DST of the diaphragm and an overall focal length F of the optical lens satisfy: DST / F≥0.2.

[0031] Further, a maximum field of view angle FOV of the optical lens, an overall focal length F of the optical lens and an image height H corresponding to the maximum field of view angle of the optical lens satisfy: (FOV*F) / H≥35.

[0032] Further, an image height H corresponding to the maximum field of view angle of the optical lens, an overall focal length F of the optical lens and an arc value θ of the maximum field of view angle of the optical lens satisfy: 0.8≤(H / 2) / (F*tan(θ / 2))≤1.2.

[0033] Further, a focal length F1 of the first lens and an overall focal length F of the optical lens satisfy: F1 / F≥0.5.

[0034] Further, a focal length F2 of the second lens and an overall focal length F of the optical lens satisfy: 0.8≤F2 / F≤4.6.

[0035] Further, a focal length F3 of the third lens and an overall focal length F of the optical lens satisfy: -0.98≤F3 / F≤-0.1.

[0036] Further, a focal length F4 of the fourth lens and an overall focal length F of the optical lens satisfy: 1≤F4 / F≤1.9.

[0037] Further, a focal length F5 of the fifth lens and an overall focal length F of the optical lens satisfy: 1≤F5 / F≤1.9.

[0038] Further, the focal length F4 of the fourth lens and the focal length F5 of the fifth lens satisfy: 0.6≤F4 / F5≤1.3.

[0039] Further, a curvature radius R7 of the first side surface of the fourth lens and a curvature radius R8 of the second side surface of the fourth lens satisfy: 4≤R7 / R8≤12.

[0040] Further, a refractive index Nd1 of the first lens satisfies: Nd1≥1.70.

[0041] Furthermore, the sagitta SAG7 of the first side of the fourth lens and the sagitta SAG8 of the second side of the fourth lens satisfy the following condition: |SAG8 / SAG7|≥1.1.

[0042] Furthermore, the sagitta SAG8 of the second side of the fourth lens and the maximum aperture D8 of the second side of the fourth lens corresponding to the maximum field of view of the optical lens satisfy the following condition: arctan(SAG8 / D8)≤-0.13.

[0043] Furthermore, the maximum aperture D10 of the second side of the fifth lens corresponding to the maximum field of view of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: D10 / H≥1.2.

[0044] Furthermore, the maximum aperture D10 of the second side of the fifth lens corresponding to the maximum field of view of the optical lens, the optical back focal length of the optical lens, that is, the distance BFL from the center of the second side of the last lens of the optical lens to the center of the imaging plane, and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: D10*BFL / H≥80.

[0045] Furthermore, the radius of curvature R3 of the first side surface of the second lens and the radius of curvature R4 of the second side surface of the second lens satisfy the following condition: 0.01≤R3 / |R4|≤0.7.

[0046] According to another aspect of the present invention, an optical lens is provided, comprising, from a first side to a second side, the following in sequence: a first lens having positive optical power; a second lens having positive optical power; a third lens having negative optical power; a fourth lens having positive optical power; and a fifth lens having positive optical power; wherein the focal length F2 of the second lens satisfies the following condition with respect to the total focal length F of the optical lens: 0.8 ≤ F2 / F ≤ 4.6.

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

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

[0049] Furthermore, the first side surface of the first lens is concave, and the second side surface is convex.

[0050] Furthermore, the first side surface of the second lens is convex, and the second side surface is convex.

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

[0052] Furthermore, the first side surface of the third lens is concave, and the second side surface is concave.

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

[0054] Furthermore, the first side surface of the fifth lens is convex, and the second side surface is convex.

[0055] Furthermore, the first side of the fifth lens is convex, and the second side is concave.

[0056] Furthermore, the optical lens also includes an aperture stop, which is located between the second lens and the third lens.

[0057] Furthermore, the total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens of the optical lens to the center of the imaging plane of the optical lens, satisfies the following condition with respect to the total focal length F of the optical lens: TTL / F≤2.2.

[0058] Furthermore, the total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens of the optical lens to the center of the imaging plane of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view FOV of the optical lens satisfy the following: TTL / H / FOV≤1.2.

[0059] Furthermore, the total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens of the optical lens to the center of the imaging plane of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the following: TTL / H / θ≤30.

[0060] Furthermore, the total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens of the optical lens to the center of the imaging plane of the optical lens, satisfies the following condition with respect to the maximum aperture DMAX among all lenses in the optical lens: TTL / DMAX≤5.

[0061] Furthermore, the total focal length F of the optical lens, the radian value θ of the maximum field of view of the optical lens, and the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens satisfy the following relationship: (F*θ) / D≥0.1.

[0062] Furthermore, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view FOV of the optical lens satisfy the following relationship: D / H / FOV≤0.8.

[0063] Furthermore, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the following relationship: D / H / θ≤18.

[0064] Furthermore, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the total focal length F of the optical lens satisfy the following condition: D / H / F≤0.07.

[0065] Furthermore, the image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the following relationship: |(HF*θ) / (F*θ)|≤0.1.

[0066] Furthermore, 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 of the optical lens to the center of the imaging plane, satisfies the following condition: BFL / TTL≥0.4.

[0067] Furthermore, 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 of the optical lens to the center of the imaging plane, and the lens group length of the optical lens, i.e., the distance TL between the center of the first side of the first lens of the optical lens and the center of the second side of the last lens of the optical lens, satisfy the following condition: BFL / TL≥0.6.

[0068] Furthermore, 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: F / H≤7.

[0069] Furthermore, the total focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy the following condition: F / ENPD≤1.45.

[0070] Furthermore, the total focal length F of the optical lens, the entrance pupil diameter ENPD of the optical lens, and the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens satisfy the following condition: F / ENPD / D≤0.04.

[0071] Furthermore, the effective aperture diameter DST of the aperture and the total focal length F of the optical lens satisfy the following condition: DST / F≥0.2.

[0072] Furthermore, the maximum field of view (FOV) of the optical lens, 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: (FOV×F) / H≥35.

[0073] Furthermore, the image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the following relationship: 0.8≤(H / 2) / (F*tan(θ / 2))≤1.2.

[0074] Furthermore, the focal length F1 of the first lens satisfies the following condition with respect to the total focal length F of the optical lens: F1 / F≥0.5.

[0075] Furthermore, the focal length F3 of the third lens satisfies the following relationship with the total focal length F of the optical lens: -0.98≤F3 / F≤-0.1.

[0076] Furthermore, the focal length F4 of the fourth lens satisfies the following relationship with the total focal length F of the optical lens: 1≤F4 / F≤1.9.

[0077] Furthermore, the focal length F5 of the fifth lens satisfies the following relationship with the total focal length F of the optical lens: 1≤F5 / F≤1.9.

[0078] Furthermore, the focal length F4 of the fourth lens and the focal length F5 of the fifth lens satisfy the following condition: 0.6 ≤ F4 / F5 ≤ 1.3.

[0079] Furthermore, the radius of curvature R7 of the first side surface of the fourth lens and the radius of curvature R8 of the second side surface of the fourth lens satisfy the following condition: 4≤R7 / R8≤12.

[0080] Furthermore, the refractive index Nd1 of the first lens satisfies: Nd1≥1.70.

[0081] Furthermore, the sagitta SAG7 of the first side of the fourth lens and the sagitta SAG8 of the second side of the fourth lens satisfy the following condition: |SAG8 / SAG7|≥1.1.

[0082] Furthermore, the sagitta SAG8 of the second side of the fourth lens and the maximum aperture D8 of the second side of the fourth lens corresponding to the maximum field of view of the optical lens satisfy the following condition: arctan(SAG8 / D8)≤-0.13.

[0083] Furthermore, the maximum aperture D10 of the second side of the fifth lens corresponding to the maximum field of view of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: D10 / H≥1.2.

[0084] Furthermore, the maximum aperture D10 of the second side of the fifth lens corresponding to the maximum field of view of the optical lens, 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 of the optical lens to the center of the imaging plane) and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: D10*BFL / H≥80.

[0085] Furthermore, the radius of curvature R3 of the first side surface of the second lens and the radius of curvature R4 of the second side surface of the second lens satisfy the following condition: 0.01≤R3 / |R4|≤0.7.

[0086] 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.

[0087] According to the technical solution of the present invention, the optical lens includes, from the first side to the second side, a first lens with positive optical power, a second lens with positive optical power, a third lens with negative optical power, a fourth lens with positive optical power, and a fifth lens with positive optical power; the first side of the second lens is convex; the first side of the third lens is concave and the second side is concave; the first side of the fourth lens is concave and the second side is convex; and the first side of the fifth lens is convex.

[0088] The first lens has positive optical power and is preferably made of a high refractive index material, which is beneficial for refracting light and achieving a wider field of view. At the same time, the first lens has a large focal length, which helps the light to transition smoothly to the rear and reduces the sensitivity of the lens.

[0089] The second lens has positive optical power. Its first side is convex, while its second side can be either convex or concave. When the second side is convex, it has positive optical power, converging light and adjusting the convergence of the central and edge rays to improve system illumination. It also ensures a smooth transition of light rays to the rear, reducing system sensitivity. The convex second side deflects large-angle rays from the edge field of view inwards, which helps reduce the aperture of the rear lens, achieving miniaturization and lower lens costs. When the second side is concave, it also has positive optical power, collecting light and further reducing the aperture of the rear lens, achieving miniaturization. It also ensures a smooth transition of light rays, reducing system sensitivity. The concave second side results in a smooth light transition, minimizing aberrations and improving the optical system's resolution.

[0090] The third lens has negative optical power. Its first and second sides are both concave. This negative optical power diverges the light rays. When used in conjunction with the positive optical power of the second lens, it adjusts the angle of the light rays, smoothly transitioning the peripheral light and reducing lens sensitivity. Simultaneously, the optical path difference between the edge and center fields of view increases rapidly, which helps correct aberrations in the edge fields and improves image quality.

[0091] The fourth lens has positive optical power. Its first side is concave, and its second side is convex. This positive optical power converges and adjusts the light rays, ensuring a smooth transition to the image plane. When used in conjunction with the negative optical power third lens, it controls the light path from the third to the fifth lens, resulting in a compact lens structure. The symmetrical design of the concave and convex surfaces of the fourth and fifth lenses helps reduce aberrations and allows light to converge rapidly onto the image plane.

[0092] The fifth lens has positive optical power. The first side of the fifth lens is convex, and the second side can be either convex or concave. When the second side of the fifth lens is convex, it has positive optical power and converges light rays, avoiding light energy loss caused by excessive angle between the light rays from a large field of view and the chip's principal ray when they reach the imaging surface. This helps improve the illumination of the edge field of view. Since both the first and second sides of the fifth lens are convex, light rays tend to be perpendicular to the incident light when entering this surface. Therefore, the light rays enter this surface with a smooth transition, which helps reduce aberrations, improve resolution, and also helps reduce lens sensitivity. When the second side of the fifth lens is concave, the fifth lens has positive optical power and a gentle lens shape, allowing light to enter smoothly and transition smoothly, which helps to improve astigmatism and field curvature, and enhances the resolving power of the optical system. When the first side of the fifth lens is convex and the second side is concave, the light has a longer optical path to the imaging plane after passing through the fifth lens, which is beneficial for achieving small CRA. The symmetrical design of the convex and concave surfaces of the fifth lens and the fourth lens helps to reduce aberrations and allows light to converge quickly to the imaging plane.

[0093] 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 small FNO, high resolution, low distortion, miniaturization, large angular resolution, and small CRA while accommodating a large target surface. Attached Figure Description

[0094] 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:

[0095] Figure 1 A schematic diagram of the structure of an optical lens of Example 1 of the present invention is shown;

[0096] Figure 2 A schematic diagram of the structure of the optical lens of Example 2 of the present invention is shown;

[0097] Figure 3 A schematic diagram of the structure of the optical lens of Example 3 of the present invention is shown;

[0098] Figure 4A schematic diagram of the structure of the optical lens of Example 4 of the present invention is shown;

[0099] Figure 5 A schematic diagram of the structure of the optical lens of Example 5 of the present invention is shown;

[0100] Figure 6 A schematic diagram of the structure of the optical lens of Example Six of the present invention is shown;

[0101] Figure 7 A schematic diagram of the structure of the optical lens of Example Seven of the present invention is shown;

[0102] Figure 8 A schematic diagram of the structure of the optical lens of Example 8 of the present invention is shown.

[0103] The above figures include the following reference numerals:

[0104] 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; S6, First side surface of the third lens; S7, Second side surface of the third lens; L4, Fourth lens; S8, First side surface of the fourth lens; S9, Second side surface of the fourth lens; L5, Fifth lens; S10, First side surface of the fifth lens; S11, Second side surface of the fifth lens; S12, First side surface of the protective glass; S13, Second side surface of the protective glass; IMA, Imaging plane. Detailed Implementation

[0105] 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.

[0106] 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.

[0107] 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.

[0108] 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.

[0109] 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.

[0110] 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.

[0111] 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.

[0112] 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.

[0113] In an exemplary embodiment, the optical lens provided in this application can be used as, for example, a projection lens or a lidar transmitter lens.

[0114] To address the challenges of simultaneously achieving small FNO, high resolution, low distortion, miniaturization, large angular resolution, and small CRA while accommodating a large target surface in existing optical lenses, this invention provides an optical lens and an electronic device.

[0115] Example 1

[0116] like Figures 1 to 8As shown, the optical lens includes, from the first side to the second side, a first lens with positive optical power, a second lens with positive optical power, a third lens with negative optical power, a fourth lens with positive optical power, and a fifth lens with positive optical power; the first side of the second lens is convex; the first side of the third lens is concave and the second side is concave; the first side of the fourth lens is concave and the second side is convex; and the first side of the fifth lens is convex.

[0117] The first lens has positive optical power and is preferably made of a high refractive index material, which is beneficial for refracting light and achieving a wider field of view. At the same time, the first lens has a large focal length, which helps the light to transition smoothly to the rear and reduces the sensitivity of the lens.

[0118] The second lens has positive optical power. Its first side is convex, while its second side can be either convex or concave. When the second side is convex, it has positive optical power, converging light and adjusting the convergence of the central and edge rays to improve system illumination. It also ensures a smooth transition of light rays to the rear, reducing system sensitivity. The convex second side deflects large-angle rays from the edge field of view inwards, which helps reduce the aperture of the rear lens, achieving miniaturization and lower lens costs. When the second side is concave, it also has positive optical power, collecting light and further reducing the aperture of the rear lens, achieving miniaturization. It also ensures a smooth transition of light rays, reducing system sensitivity. The concave second side results in a smooth light transition, minimizing aberrations and improving the optical system's resolution.

[0119] The third lens has negative optical power. Its first and second sides are both concave. This negative optical power diverges the light rays. When used in conjunction with the positive optical power of the second lens, it adjusts the angle of the light rays, smoothly transitioning the peripheral light and reducing lens sensitivity. Simultaneously, the optical path difference between the edge and center fields of view increases rapidly, which helps correct aberrations in the edge fields and improves image quality.

[0120] The fourth lens has positive optical power. Its first side is concave, and its second side is convex. This positive optical power converges and adjusts the light rays, ensuring a smooth transition to the image plane. When used in conjunction with the negative optical power third lens, it controls the light path from the third to the fifth lens, resulting in a compact lens structure. The symmetrical design of the concave and convex surfaces of the fourth and fifth lenses helps reduce aberrations and allows light to converge rapidly onto the image plane.

[0121] The fifth lens has positive optical power. The first side of the fifth lens is convex, and the second side can be either convex or concave. When the second side of the fifth lens is convex, it has positive optical power and converges light rays, avoiding light energy loss caused by excessive angle between the light rays from a large field of view and the chip's principal ray when they reach the imaging surface. This helps improve the illumination of the edge field of view. Since both the first and second sides of the fifth lens are convex, light rays tend to be perpendicular to the incident light when entering this surface. Therefore, the light rays enter this surface with a smooth transition, which helps reduce aberrations, improve resolution, and also helps reduce lens sensitivity. When the second side of the fifth lens is concave, the fifth lens has positive optical power and a gentle lens shape, allowing light to enter smoothly and transition smoothly, which helps to improve astigmatism and field curvature, and enhances the resolving power of the optical system. When the first side of the fifth lens is convex and the second side is concave, the light has a longer optical path to the imaging surface after passing through the fifth lens, which is beneficial for achieving small CRA. The symmetrical design of the convex and concave surfaces of the fifth lens and the fourth lens helps to reduce aberrations and allows light to converge quickly to the imaging surface.

[0122] 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 small FNO, high resolution, low distortion, miniaturization, large angular resolution, and small CRA while accommodating a large target surface.

[0123] In this embodiment, both the first and second sides of the first lens are convex. The first lens has a positive optical power and uses a high refractive index material, which is beneficial for refracting light and achieving a wider field of view. At the same time, the lens has a large focal length, which helps the light to transition smoothly to the rear, reducing the lens sensitivity. The fact that both the first and second sides of the first lens are convex helps to reduce the amount of light entering the first lens, thus reducing the height of the second lens.

[0124] In this embodiment, the first side of the first lens is convex, and the second side is concave. The first lens has a positive optical power and uses a high refractive index material, which is beneficial for refracting light and achieving a larger field of view. At the same time, the lens has a large focal length, which is beneficial for the smooth transition of light to the rear, reducing the lens sensitivity. The second side of the first lens is concave, which can control the direction of large-angle light rays at the edge of the lens. The light rays emitted through the second side of the first lens can provide a larger light receiving surface for subsequent optical systems.

[0125] In this embodiment, the first side of the first lens is concave, and the second side is convex. The first lens has a positive optical power and uses a high refractive index material, which is beneficial for refracting light and achieving a larger field of view. At the same time, the lens has a large focal length, which is beneficial for the smooth transition of light to the rear, reducing the lens sensitivity; the concave first side of the first lens controls the direction of large-angle light rays, so that the light rays in each field of view are close to parallel to the optical axis, resulting in less light deflection and less energy loss.

[0126] In this embodiment, the second side surface of the second lens is convex. The second lens has positive optical power, which converges light rays, adjusts the convergence center light rays and edge position light rays, improves system illumination, and at the same time makes the light path smoothly transition to the rear, reducing system sensitivity; the convexity of the second side surface of the second lens causes large-angle light rays at the edge field of view to be deflected inward after passing through the second lens, which helps to reduce the aperture of the rear lens of the system, achieving miniaturization while reducing lens cost.

[0127] In this embodiment, the second side surface of the second lens is concave. The second lens has positive optical power, collects light, and is beneficial for reducing the aperture of the rear lens of the system, thus achieving miniaturization; at the same time, it makes the light path transition smoothly, reducing the sensitivity of the system; the second side surface of the second lens is concave, and the lens shape is flat, so when the light passes through the second lens, the light transition is smooth, resulting in small aberrations, which is beneficial for improving the resolution of the optical system.

[0128] In this embodiment, the second side surface of the fifth lens is convex. The fifth lens has positive optical power and converges light rays, avoiding light energy loss caused by excessive angle between the large field-of-view light rays and the chip's principal ray when they reach the imaging surface, thus improving the illumination of the edge field of view. The first and second sides of the fifth lens are both convex, and light rays entering these surfaces tend to be perpendicularly incident, resulting in a smooth transition. This helps reduce aberrations, improve resolution, and also reduces lens sensitivity.

[0129] In this embodiment, the second side of the fifth lens is concave. The fifth lens has positive optical power and a gently sloping shape, allowing light to enter smoothly and transition smoothly, which helps improve astigmatism and field curvature, and enhances the resolving power of the optical system. The first side of the fifth lens is convex, and the second side is concave, resulting in a longer optical path for light to reach the imaging plane, which is beneficial for achieving a small CRA (Current Aberration Reduction). The symmetrical design of the concave and convex shapes of the fourth lens and the fifth lens helps reduce aberrations and allows light to converge rapidly to the imaging plane.

[0130] In this embodiment, the optical lens also includes an aperture stop, which is located between the second lens and the third lens. By placing the aperture stop between the second lens and the third lens, the apertures of the second and third lenses can be reduced, which helps to reduce costs and manufacturing difficulties.

[0131] 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 following condition with respect to the total focal length F of the optical lens: TTL / F ≤ 2.2. With a fixed total focal length, a smaller total optical length effectively limits the length of the optical lens, which is beneficial for miniaturization. Preferably, TTL / F ≤ 2.

[0132] 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, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view FOV of the optical lens satisfy the following condition: TTL / H / FOV ≤ 1.2. With a fixed image height and maximum field of view, a smaller total optical length effectively limits the length of the optical lens, achieving miniaturization. Preferably, TTL / H / FOV ≤ 0.7.

[0133] 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, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ of the maximum field of view of the optical lens, satisfy the following relationship: TTL / H / θ ≤ 30. With a fixed image height and radian value of the maximum field of view, ensuring a small total optical length of the optical lens effectively limits its length and facilitates miniaturization. Preferably, TTL / H / θ ≤ 26.

[0134] 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 TTL / DMAX ≤ 5 with respect to the maximum aperture among all lenses in the optical lens. Satisfying this condition results in a smaller total optical length for a given maximum aperture, which is beneficial for miniaturization. Preferably, TTL / DMAX ≤ 3.

[0135] In this embodiment, the overall focal length F of the optical lens, the radian value θ of the maximum field of view of the optical lens, and the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens satisfy the condition: (F*θ) / D≥0.1. Satisfying this condition allows for a smaller front aperture of the optical lens, given a fixed overall focal length and maximum field of view radian value, thus reducing the size of the imaging system. Preferably, (F*θ) / D≥0.2.

[0136] In this embodiment, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view (FOV) of the optical lens satisfy the condition: D / H / FOV ≤ 0.8. By satisfying this condition, with a fixed image height and maximum field of view, a smaller front aperture can be achieved, enabling miniaturization. Preferably, D / H / FOV ≤ 0.5.

[0137] In this embodiment, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the condition: D / H / θ≤18. By satisfying this condition, with a fixed image height and maximum field of view radian value, a smaller front aperture can be achieved, enabling miniaturization. Preferably, D / H / θ≤15.

[0138] In this embodiment, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the total focal length F of the optical lens satisfy the condition: D / H / F ≤ 0.07. Satisfying this condition allows for a large target surface and small aperture for the optical lens under a fixed focal length. Preferably, D / H / F ≤ 0.06.

[0139] 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 relationship: |(HF*θ) / (F*θ)|≤0.1. F*θ is the ideal image height, and H is the actual image height. A small error between the ideal and actual image height enables small distortion, reduces the degree of image distortion, and ensures undistorted imaging. Preferably, |(HF*θ) / (F*θ)|≤0.05.

[0140] 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, satisfies the condition that BFL / TTL ≥ 0.4 with respect to the total optical length of the optical lens (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. Satisfying this condition, while achieving miniaturization, a longer back focal length is beneficial for smooth light transition, reducing CRA (Collateral Radiation Amplitude) and improving image quality. Preferably, BFL / TTL ≥ 0.42.

[0141] 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 of the optical lens to the center of the imaging plane, and the lens group length of the optical lens, i.e., the distance TL between the center of the first side of the first lens of the optical lens and the center of the second side of the last lens of the optical lens, satisfy the condition: BFL / TL ≥ 0.6. With a fixed lens group length, this satisfies the special requirements for the back focal length of the optical lens and also reserves space for the installation and focusing of optical components, avoiding mechanical interference. Preferably, BFL / TL ≥ 0.7.

[0142] 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 condition: F / H ≤ 7. Satisfying this condition results in a larger image height for a given focal length, which is beneficial for improving resolution. Preferably, F / H ≤ 5.

[0143] In this embodiment, the total focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy the condition: F / ENPD ≤ 1.45. Satisfying this condition helps to ensure a small FNO, which is beneficial to increasing the amount of light transmitted, achieving a larger amount of light intake, and increasing the brightness of the imaging surface. Preferably, F / ENPD ≤ 1.35.

[0144] In this embodiment, the overall focal length F of the optical lens, the entrance pupil diameter ENPD of the optical lens, and the maximum light-transmitting aperture D of the first side surface of the first lens corresponding to the maximum field of view of the optical lens satisfy the condition: F / ENPD / D ≤ 0.04. Satisfying this condition allows for high light transmission of the optical lens despite its small aperture. Preferably, F / ENPD / D ≤ 0.035.

[0145] In this embodiment, the effective aperture diameter (DST) of the aperture and the total focal length (F) of the optical lens satisfy the condition: DST / F ≥ 0.2. A larger ratio of aperture diameter to effective focal length results in a larger aperture and greater light transmission of the optical lens. Preferably, DST / F ≥ 0.4.

[0146] In this embodiment, the maximum field of view (FOV) of the optical lens, 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 condition: (FOV×F) / H ≥ 35. Satisfying this condition also satisfies the requirements for telephoto and large-angle resolution. Preferably, (FOV×F) / H ≥ 47.

[0147] 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: 0.8 ≤ (H / 2) / (F*tan(θ / 2)) ≤ 1.2. Satisfying this condition ensures that the ratio of the ideal image height to the actual image height is close to 1, which is beneficial for achieving low distortion. Preferably, 0.9 ≤ (H / 2) / (F*tan(θ / 2)) ≤ 1.1.

[0148] In this embodiment, the focal length F1 of the first lens satisfies the condition F1 / F≥0.5 with the total focal length F of the optical lens. The positive and relatively large focal length of the first lens results in a smooth lens shape, reducing aberration changes after the first lens becomes eccentric and effectively reducing the sensitivity of the first lens. Preferably, F1 / F≥1.

[0149] In this embodiment, the focal length F2 of the second lens satisfies the following relationship with the total focal length F of the optical lens: 0.8 ≤ F2 / F ≤ 4.6. The focal length of the second lens is positive, and controlling the focal length within a certain range makes the shape of the second lens smoother, effectively reducing its sensitivity. Preferably, 1.2 ≤ F2 / F ≤ 3.

[0150] In this embodiment, the focal length F3 of the third lens satisfies the following relationship with the total focal length F of the optical lens: -0.98 ≤ F3 / F ≤ -0.1. The third lens is a negative focal length lens, and controlling its focal length within a certain range allows light to enter the optical system smoothly, while also improving light collection, ensuring sufficient light transmission, and enhancing resolution. Preferably, -0.8 ≤ F3 / F ≤ -0.3.

[0151] In this embodiment, the focal length F4 of the fourth lens satisfies the following relationship with the total focal length F of the optical lens: 1 ≤ F4 / F ≤ 1.9. The fourth lens is a positive focal length lens, and controlling its focal length within a certain range allows light to enter the optical system smoothly. This also facilitates light collection, ensures sufficient light transmission, improves resolution, and promotes light deflection, achieving a small CRA (Current Radiation Amplitude). Preferably, 1.2 ≤ F4 / F ≤ 1.7.

[0152] In this embodiment, the focal length F5 of the fifth lens satisfies the following relationship with the total focal length F of the optical lens: 1 ≤ F5 / F ≤ 1.9. The fifth lens is a positive focal length lens, and controlling its focal length within a certain range allows light to enter the optical system smoothly. This also facilitates light collection, ensures sufficient light transmission, improves resolution, and promotes light deflection, achieving a small CRA (Current Radiation Amplitude). Preferably, 1.2 ≤ F5 / F ≤ 1.7.

[0153] In this embodiment, the focal length F4 of the fourth lens and the focal length F5 of the fifth lens satisfy the condition: 0.6 ≤ F4 / F5 ≤ 1.3. Satisfying this condition ensures that the focal lengths of adjacent lenses are similar, which helps to smooth the light transition and improves resolution. Furthermore, the optical power of the fourth and fifth lenses is positive, allowing for a larger amount of light to be received, increasing the brightness of the imaging plane. Preferably, 0.7 ≤ F4 / F5 ≤ 1.2.

[0154] In this embodiment, the radius of curvature R7 of the first side surface of the fourth lens and the radius of curvature R8 of the second side surface of the fourth lens satisfy the condition: 4 ≤ R7 / R8 ≤ 12. Controlling the radii of curvature of the two surfaces of the fourth lens, ensuring a significant difference between them within a certain range, allows light to converge quickly and adjusts its trajectory, ensuring a smooth transition to the rear. Preferably, 4 ≤ R7 / R8 ≤ 10.

[0155] In this embodiment, the refractive index Nd1 of the first lens satisfies: Nd1 ≥ 1.70. Using a high refractive index material for the first lens is beneficial for reducing the front aperture and improving image quality, resulting in a more compact structure. Preferably, Nd1 ≥ 1.75.

[0156] In this embodiment, the sagitta SAG7 of the first side of the fourth lens and the sagitta SAG8 of the second side of the fourth lens satisfy the condition: |SAG8 / SAG7|≥1.1. Satisfying this condition ensures a large difference in sagitta between the two sides of the fourth lens, which is beneficial for the fourth lens to collect light, allowing the light to transition smoothly to the rear, and effectively reducing system aberrations and improving the system's imaging quality. Preferably, |SAG8 / SAG7|≥3.

[0157] In this embodiment, the sagitta SAG8 of the second side of the fourth lens and the maximum aperture D8 of the second side of the fourth lens corresponding to the maximum field of view of the optical lens satisfy the condition: arctan(SAG8 / D8) ≤ -0.13. Satisfying this condition is beneficial for achieving a large field of view, and the larger sagitta of the second side of the fourth lens allows for rapid light convergence. Preferably, arctan(SAG8 / D8) ≤ -0.15.

[0158] In this embodiment, the maximum aperture D10 of the second side of the fifth lens corresponding to the maximum field of view of the optical lens satisfies the condition D10 / H ≥ 1.2 with respect to the image height H corresponding to the maximum field of view of the optical lens. With the same image height, a larger aperture on the second side of the last lens is beneficial for the principal ray to exit parallel onto the imaging plane, thus facilitating the achievement of a smaller CRA. Preferably, D10 / H ≥ 2.

[0159] In this embodiment, the maximum aperture D10 of the second side of the fifth lens corresponding to the maximum field of view of the optical lens, 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 of the optical lens to the center of the imaging plane), and the image height H corresponding to the maximum field of view of the optical lens satisfy the condition: D10*BFL / H≥80. By controlling the optical back focal length of the optical system and the aperture of the second side of the fifth lens, a longer optical back focal length and a larger aperture of the second side of the fifth lens are achieved, which is beneficial for the main ray to exit parallel onto the imaging plane and for achieving a small CRA (Current Radiation Aspect Ratio). Preferably, D10*BFL / H≥90.

[0160] In this embodiment, the radius of curvature R3 of the first side surface of the second lens and the radius of curvature R4 of the second side surface of the second lens satisfy the following condition: 0.01 ≤ R3 / |R4| ≤ 0.7. The special design of the radii of curvature of the two surfaces of the second lens, with the first side surface being more convex than the second side surface, and the second side surface being relatively flat, allows the edge light rays to converge gradually, smoothly transitioning to the third lens and reducing sensitivity. Preferably, 0.05 ≤ R3 / |R4| ≤ 0.4.

[0161] Example 2

[0162] like Figures 1 to 8 As shown, the optical lens, from the first side to the second side, sequentially includes: a first lens with positive optical power; a second lens with positive optical power; a third lens with negative optical power; a fourth lens with positive optical power; and a fifth lens with positive optical power. The focal length F2 of the second lens satisfies the condition 0.8 ≤ F2 / F ≤ 4.6 with the total focal length F of the optical lens. The positive focal length of the second lens, by controlling it within a certain range, makes the shape of the second lens gently sloping, effectively reducing its sensitivity. Preferably, 1.2 ≤ F2 / F ≤ 3.

[0163] In this embodiment, both the first and second sides of the first lens are convex. The first lens has a positive optical power and uses a high refractive index material, which is beneficial for refracting light and achieving a wider field of view. At the same time, the lens has a large focal length, which helps the light to transition smoothly to the rear, reducing the lens sensitivity. The fact that both the first and second sides of the first lens are convex helps to reduce the amount of light entering the first lens, thus reducing the height of the second lens.

[0164] In this embodiment, the first side of the first lens is convex, and the second side is concave. The first lens has a positive optical power and uses a high refractive index material, which is beneficial for refracting light and achieving a larger field of view. At the same time, the lens has a large focal length, which is beneficial for the smooth transition of light to the rear, reducing the lens sensitivity. The second side of the first lens is concave, which can control the direction of large-angle light rays at the edge of the lens. The light rays emitted through the second side of the first lens can provide a larger light receiving surface for subsequent optical systems.

[0165] In this embodiment, the first side of the first lens is concave, and the second side is convex. The first lens has a positive optical power and uses a high refractive index material, which is beneficial for refracting light and achieving a larger field of view. At the same time, the lens has a large focal length, which is beneficial for the smooth transition of light to the rear, reducing the lens sensitivity; the concave first side of the first lens controls the direction of large-angle light rays, so that the light rays in each field of view are close to parallel to the optical axis, resulting in less light deflection and less energy loss.

[0166] In this embodiment, both the first and second sides of the second lens are convex. The second lens has positive optical power, which converges light rays, adjusts the convergence center light rays and edge light rays, improves system illumination, and ensures a smooth transition of light rays to the rear, reducing system sensitivity. The convexity of the second side of the second lens causes large-angle light rays at the edge of the field of view to be deflected inward after passing through the second lens, which helps to reduce the aperture of the rear lens of the system, achieving miniaturization while reducing lens cost.

[0167] In this embodiment, the first side of the second lens is convex, and the second side is concave. The second lens has positive optical power, collects light, and helps to reduce the aperture of the rear lens of the system, thus achieving miniaturization; at the same time, it makes the light path transition smoothly, reducing the sensitivity of the system; the second side of the second lens is concave, and the lens shape is gentle, so when the light passes through the second lens, the light transition is smooth, resulting in small aberrations, which helps to improve the resolution of the optical system.

[0168] In this embodiment, the first side surface of the third lens is concave, and the second side surface is concave. The third lens has negative optical power, which diverges the light. When used in conjunction with the second lens with positive optical power, it adjusts the angle of the light and smoothly transitions the peripheral light, which helps to reduce the sensitivity of the lens. At the same time, the optical path difference between the edge field of view and the center field of view increases rapidly, which helps to correct aberrations in the edge field of view and improve image quality.

[0169] In this embodiment, the first side of the fourth lens is concave, and the second side is convex. The fourth lens has positive optical power, which converges and adjusts the light rays, allowing the light path to smoothly transition to the rear. When used in conjunction with the negative optical power third lens, it controls the light path from the third lens to the fifth lens, making the lens structure compact. Furthermore, the symmetrical design of the concave and convex surfaces of the fourth lens and the fifth lens helps to reduce aberrations and allows the light rays to converge quickly onto the imaging plane.

[0170] In this embodiment, the first and second sides of the fifth lens are convex. The fifth lens has positive optical power and converges light rays, avoiding light energy loss caused by excessive angle between the large field-of-view light rays and the chip's principal ray when they reach the imaging surface, thus improving the illumination of the edge field of view. Because the first and second sides of the fifth lens are convex, light rays entering these surfaces tend to be perpendicularly incident, resulting in a smooth transition. This helps reduce aberrations, improve resolution, and also reduces lens sensitivity.

[0171] In this embodiment, the first side of the fifth lens is convex, and the second side is concave. The fifth lens has positive optical power and a gently sloping shape, allowing light to enter smoothly and transition smoothly, which helps improve astigmatism and field curvature, and enhances the resolving power of the optical system. The convex and concave shape of the first side of the fifth lens results in a longer optical path for light to reach the imaging plane, which is beneficial for achieving a small CRA (Current Aberration Reduction). The symmetrical design of the convex and concave surfaces of the fourth and fifth lenses helps reduce aberrations and allows light to converge rapidly to the imaging plane.

[0172] 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 small FNO, high resolution, low distortion, miniaturization, large angular resolution, and small CRA while accommodating a large target surface.

[0173] In this embodiment, the optical lens also includes an aperture stop, which is located between the second lens and the third lens. By placing the aperture stop between the second and third lenses, the apertures of the second and third lenses can be reduced, which helps to lower costs and reduce manufacturing difficulty.

[0174] 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 following condition with respect to the total focal length F of the optical lens: TTL / F ≤ 2.2. With a fixed total focal length, a smaller total optical length effectively limits the length of the optical lens, which is beneficial for miniaturization. Preferably, TTL / F ≤ 2.

[0175] 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, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view FOV of the optical lens satisfy the following condition: TTL / H / FOV ≤ 1.2. With a fixed image height and maximum field of view, a smaller total optical length effectively limits the length of the optical lens, achieving miniaturization. Preferably, TTL / H / FOV ≤ 0.7.

[0176] 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, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ of the maximum field of view of the optical lens, satisfy the following relationship: TTL / H / θ ≤ 30. With a fixed image height and radian value of the maximum field of view, ensuring a small total optical length of the optical lens effectively limits its length and facilitates miniaturization. Preferably, TTL / H / θ ≤ 26.

[0177] 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 TTL / DMAX ≤ 5 with respect to the maximum aperture among all lenses in the optical lens. Satisfying this condition results in a smaller total optical length for a given maximum aperture, which is beneficial for miniaturization. Preferably, TTL / DMAX ≤ 3.

[0178] In this embodiment, the overall focal length F of the optical lens, the radian value θ of the maximum field of view of the optical lens, and the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens satisfy the condition: (F*θ) / D≥0.1. Satisfying this condition allows for a smaller front aperture of the optical lens, given a fixed overall focal length and maximum field of view radian value, thus reducing the size of the imaging system. Preferably, (F*θ) / D≥0.2.

[0179] In this embodiment, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view (FOV) of the optical lens satisfy the condition: D / H / FOV ≤ 0.8. By satisfying this condition, with a fixed image height and maximum field of view, a smaller front aperture can be achieved, enabling miniaturization. Preferably, D / H / FOV ≤ 0.5.

[0180] In this embodiment, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the condition: D / H / θ≤18. By satisfying this condition, with a fixed image height and maximum field of view radian value, a smaller front aperture can be achieved, enabling miniaturization. Preferably, D / H / θ≤15.

[0181] In this embodiment, the maximum aperture D of the first side of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the total focal length F of the optical lens satisfy the condition: D / H / F ≤ 0.07. Satisfying this condition allows for a large target surface and small aperture for the optical lens under a fixed focal length. Preferably, D / H / F ≤ 0.06.

[0182] 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 relationship: |(HF*θ) / (F*θ)|≤0.1. F*θ is the ideal image height, and H is the actual image height. A small error between the ideal and actual image height enables small distortion, reduces the degree of image distortion, and ensures undistorted imaging. Preferably, |(HF*θ) / (F*θ)|≤0.05.

[0183] 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, satisfies the condition that BFL / TTL ≥ 0.4 with respect to the total optical length of the optical lens (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. Satisfying this condition, while achieving miniaturization, a longer back focal length is beneficial for smooth light transition, reducing CRA (Collateral Radiation Amplitude) and improving image quality. Preferably, BFL / TTL ≥ 0.42.

[0184] 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 of the optical lens to the center of the imaging plane, and the lens group length of the optical lens, i.e., the distance TL between the center of the first side of the first lens of the optical lens and the center of the second side of the last lens of the optical lens, satisfy the condition: BFL / TL ≥ 0.6. With a fixed lens group length, this satisfies the special requirements for the back focal length of the optical lens and also reserves space for the installation and focusing of optical components, avoiding mechanical interference. Preferably, BFL / TL ≥ 0.7.

[0185] 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 condition: F / H ≤ 7. Satisfying this condition results in a larger image height for a given focal length, which is beneficial for improving resolution. Preferably, F / H ≤ 5.

[0186] In this embodiment, the total focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy the condition: F / ENPD ≤ 1.45. Satisfying this condition helps to ensure a small FNO, which is beneficial to increasing the amount of light transmitted, achieving a larger amount of light intake, and increasing the brightness of the imaging surface. Preferably, F / ENPD ≤ 1.35.

[0187] In this embodiment, the overall focal length F of the optical lens, the entrance pupil diameter ENPD of the optical lens, and the maximum light-transmitting aperture D of the first side surface of the first lens corresponding to the maximum field of view of the optical lens satisfy the condition: F / ENPD / D ≤ 0.04. Satisfying this condition allows for high light transmission of the optical lens despite its small aperture. Preferably, F / ENPD / D ≤ 0.035.

[0188] In this embodiment, the effective aperture diameter (DST) of the aperture and the total focal length (F) of the optical lens satisfy the condition: DST / F ≥ 0.2. A larger ratio of aperture diameter to effective focal length results in a larger aperture and greater light transmission of the optical lens. Preferably, DST / F ≥ 0.4.

[0189] In this embodiment, the maximum field of view (FOV) of the optical lens, 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 condition: (FOV×F) / H ≥ 35. Satisfying this condition also satisfies the requirements for telephoto and large-angle resolution. Preferably, (FOV×F) / H ≥ 47.

[0190] 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: 0.8 ≤ (H / 2) / (F*tan(θ / 2)) ≤ 1.2. Satisfying this condition ensures that the ratio of the ideal image height to the actual image height is close to 1, which is beneficial for achieving low distortion. Preferably, 0.9 ≤ (H / 2) / (F*tan(θ / 2)) ≤ 1.1.

[0191] In this embodiment, the focal length F1 of the first lens satisfies the condition F1 / F≥0.5 with the total focal length F of the optical lens. The positive and relatively large focal length of the first lens results in a smooth lens shape, reducing aberration changes after the first lens becomes eccentric and effectively reducing the sensitivity of the first lens. Preferably, F1 / F≥1.

[0192] In this embodiment, the focal length F3 of the third lens satisfies the following relationship with the total focal length F of the optical lens: -0.98 ≤ F3 / F ≤ -0.1. The third lens is a negative focal length lens, and controlling its focal length within a certain range allows light to enter the optical system smoothly, while also improving light collection, ensuring sufficient light transmission, and enhancing resolution. Preferably, -0.8 ≤ F3 / F ≤ -0.3.

[0193] In this embodiment, the focal length F4 of the fourth lens satisfies the following relationship with the total focal length F of the optical lens: 1 ≤ F4 / F ≤ 1.9. The fourth lens is a positive focal length lens, and controlling its focal length within a certain range allows light to enter the optical system smoothly. This also facilitates light collection, ensures sufficient light transmission, improves resolution, and promotes light deflection, achieving a small CRA (Current Radiation Amplitude). Preferably, 1.2 ≤ F4 / F ≤ 1.7.

[0194] In this embodiment, the focal length F5 of the fifth lens satisfies the following relationship with the total focal length F of the optical lens: 1 ≤ F5 / F ≤ 1.9. The fifth lens is a positive focal length lens, and controlling its focal length within a certain range allows light to enter the optical system smoothly. This also facilitates light collection, ensures sufficient light transmission, improves resolution, and promotes light deflection, achieving a small CRA (Current Radiation Amplitude). Preferably, 1.2 ≤ F5 / F ≤ 1.7.

[0195] In this embodiment, the focal length F4 of the fourth lens and the focal length F5 of the fifth lens satisfy the condition: 0.6 ≤ F4 / F5 ≤ 1.3. Satisfying this condition ensures that the focal lengths of adjacent lenses are similar, which helps to smooth the light transition and improves resolution. Furthermore, the optical power of the fourth and fifth lenses is positive, allowing for a larger amount of light to be received, increasing the brightness of the imaging plane. Preferably, 0.7 ≤ F4 / F5 ≤ 1.2.

[0196] In this embodiment, the radius of curvature R7 of the first side surface of the fourth lens and the radius of curvature R8 of the second side surface of the fourth lens satisfy the condition: 4 ≤ R7 / R8 ≤ 12. Controlling the radii of curvature of the two surfaces of the fourth lens, ensuring a significant difference between them within a certain range, allows light to converge quickly and adjusts its trajectory, ensuring a smooth transition to the rear. Preferably, 4 ≤ R7 / R8 ≤ 10.

[0197] In this embodiment, the refractive index Nd1 of the first lens satisfies: Nd1 ≥ 1.70. Using a high refractive index material for the first lens is beneficial for reducing the front aperture and improving image quality, resulting in a more compact structure. Preferably, Nd1 ≥ 1.75.

[0198] In this embodiment, the sagitta SAG7 of the first side of the fourth lens and the sagitta SAG8 of the second side of the fourth lens satisfy the condition: |SAG8 / SAG7|≥1.1. Satisfying this condition results in a large difference in the sagitta R of the two sides of the fourth lens, which is beneficial for the fourth lens to collect light, allowing the light to smoothly transition to the rear, and effectively reducing system aberrations and improving the system's imaging quality. Preferably, |SAG8 / SAG7|≥3.

[0199] In this embodiment, the sagitta SAG8 of the second side of the fourth lens and the maximum aperture D8 of the second side of the fourth lens corresponding to the maximum field of view of the optical lens satisfy the condition: arctan(SAG8 / D8) ≤ -0.13. Satisfying this condition is beneficial for achieving a large field of view, and the larger sagitta of the second side of the fourth lens allows for rapid light convergence. Preferably, arctan(SAG8 / D8) ≤ -0.15.

[0200] In this embodiment, the maximum aperture D10 of the second side of the fifth lens corresponding to the maximum field of view of the optical lens satisfies the condition D10 / H ≥ 1.2 with respect to the image height H corresponding to the maximum field of view of the optical lens. With the same image height, a larger aperture on the second side of the last lens is beneficial for the principal ray to exit parallel onto the imaging plane, thus facilitating the achievement of a smaller CRA. Preferably, D10 / H ≥ 2.

[0201] In this embodiment, the maximum aperture D10 of the second side of the fifth lens corresponding to the maximum field of view of the optical lens, 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 of the optical lens to the center of the imaging plane), and the image height H corresponding to the maximum field of view of the optical lens satisfy the condition: D10*BFL / H≥80. Satisfying this condition allows for a longer optical back focal length and a larger aperture of the second side of the fifth lens by controlling the optical back focal length of the optical system. This facilitates the parallel emission of the principal ray onto the imaging plane and promotes a smaller CRA (Current Radiation Aspect Ratio). Preferably, D10*BFL / H≥90.

[0202] In this embodiment, the radius of curvature R3 of the first side surface of the second lens and the radius of curvature R4 of the second side surface of the second lens satisfy the following condition: 0.01 ≤ R3 / |R4| ≤ 0.7. The special design of the radii of curvature of the two surfaces of the second lens, with the first side surface being more convex than the second side surface, and the second side surface being relatively flat, allows the edge light rays to converge gradually, smoothly transitioning to the third lens and reducing sensitivity. Preferably, 0.05 ≤ R3 / |R4| ≤ 0.4.

[0203] 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.

[0204] Optionally, the optical lens may also include a filter located on the second side of the fifth lens and a protective glass for protecting the photosensitive element located on the imaging surface.

[0205] 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.

[0206] 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.

[0207] 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.

[0208] 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.

[0209] 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.

[0210] It should be noted that any of the examples one through eight below are applicable to all embodiments of this application.

[0211] Example 1

[0212] like Figure 1 The diagram shown is a schematic of the optical lens structure of Example 1.

[0213] 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, first side surface of protective glass S12, second side surface of protective glass S13, and imaging surface IMA.

[0214] The first lens L1 has positive optical power, and its first side surface S1 and second side surface S2 are convex. The second lens L2 has positive optical power, and its first side surface S3 and second side surface S4 are convex. The third lens L3 has negative optical power, and its first side surface S6 and second side surface S7 are concave. The fourth lens L4 has positive optical power, its first side surface S8 is concave, and its second side surface S9 is convex. The fifth lens L5 has positive optical power, its first side surface S10 is convex, and its second side surface S11 is convex. Light from the first side passes sequentially through surfaces S1 to S13 and is finally imaged onto the imaging plane IMA.

[0215] In this example, the total effective focal length F of the optical lens is 50.531mm, the total length TTL of the optical lens is 86.917mm, and the maximum field of view FOV of the optical lens is 15.658°.

[0216] 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).

[0217]

[0218]

[0219] Table 1

[0220] Example 2

[0221] like Figure 2 The diagram shown is a schematic of the optical lens structure in Example 2.

[0222] 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, first side surface of protective glass S12, second side surface of protective glass S13, and imaging surface IMA.

[0223] The first lens L1 has positive optical power, and its first side surface S1 and second side surface S2 are convex. The second lens L2 has positive optical power, and its first side surface S3 and second side surface S4 are convex. The third lens L3 has negative optical power, and its first side surface S6 and second side surface S7 are concave. The fourth lens L4 has positive optical power, its first side surface S8 is concave, and its second side surface S9 is convex. The fifth lens L5 has positive optical power, its first side surface S10 is convex, and its second side surface S11 is convex. Light from the first side passes sequentially through surfaces S1 to S13 and is finally imaged onto the imaging plane IMA.

[0224] In this example, the total effective focal length F of the optical lens is 50.500mm, the total length TTL of the optical lens is 84.465mm, and the maximum field of view FOV of the optical lens is 15.658°.

[0225] Table 2 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).

[0226] Surf Radius Thickness Nd Vd 1 77.626 5.000 1.85 23.78 2 -519.607 2.600 3 82.418 4.600 1.66 50.87 4 -311.712 1.498 STO Infinity 2.944 6 -48.553 4.690 1.85 23.78 7 61.672 12.521 8 -305.025 6.806 1.49 70.44 9 -32.000 0.875 10 52.209 4.982 1.62 60.34 11 -310.827 36.538 12 Infinity 1.100 1.51 62.75 13 Infinity 0.310 IMA / /

[0227] Table 2

[0228] Example 3

[0229] like Figure 3 The diagram shown is a schematic of the optical lens structure in Example 3.

[0230] like Figure 3As 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, first side surface of protective glass S12, second side surface of protective glass S13, and imaging surface IMA.

[0231] 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 positive optical power, its first side surface S3 is convex, and its second side surface S4 is convex. The third lens L3 has negative optical power, its first side surface S6 is concave, and its second side surface S7 is concave. The fourth lens L4 has positive optical power, its first side surface S8 is concave, and its second side surface S9 is convex. The fifth lens L5 has positive optical power, its first side surface S10 is convex, and its second side surface S11 is convex. Light from the first side passes sequentially through surfaces S1 to S13 and is finally imaged onto the imaging plane IMA.

[0232] In this example, the total effective focal length F of the optical lens is 50.115mm, the total length TTL of the optical lens is 86.522mm, and the maximum field of view FOV of the optical lens is 15.656°.

[0233] Table 3 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).

[0234] Surf Radius Thickness Nd Vd 1 72.711 6.997 1.85 23.78 2 882.328 3.224 3 63.030 4.602 1.66 50.87 4 -250.152 0.251 STO Infinity 2.907 6 -51.001 3.059 1.85 23.78 7 55.647 12.728 8 -250.937 7.906 1.49 70.44 9 -31.594 0.497 10 50.099 6.416 1.62 60.34 11 -534.703 36.524 12 Infinity 1.100 1.51 62.75 13 Infinity 0.310 IMA / /

[0235] Table 3

[0236] Example 4

[0237] like Figure 4 The diagram shown is a schematic of the optical lens structure of Example 4.

[0238] 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, first side surface of protective glass S12, second side surface of protective glass S13, and imaging surface IMA.

[0239] 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 positive optical power, its first side surface S3 is convex, and its second side surface S4 is convex. The third lens L3 has negative optical power, its first side surface S6 is concave, and its second side surface S7 is concave. The fourth lens L4 has positive optical power, its first side surface S8 is concave, and its second side surface S9 is convex. The fifth lens L5 has positive optical power, its first side surface S10 is convex, and its second side surface S11 is convex. Light from the first side passes sequentially through surfaces S1 to S13 and is finally imaged onto the imaging plane IMA.

[0240] In this example, the total effective focal length F of the optical lens is 49.968mm, the total length TTL of the optical lens is 87.240mm, and the maximum field of view FOV of the optical lens is 15.658°.

[0241] Table 4 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).

[0242] Surf Radius Thickness Nd Vd 1 75.769 7.291 1.85 23.78 2 749.319 3.203 3 59.760 4.624 1.66 50.87 4 -249.174 0.794 STO Infinity 2.806 6 -51.089 3.622 1.85 23.78 7 53.743 12.896 8 -248.453 7.937 1.49 70.44 9 -31.306 0.496 10 47.898 5.683 1.62 60.34 11 -652.937 36.478 12 Infinity 1.100 1.51 62.75 13 Infinity 0.310 IMA / /

[0243] Table 4

[0244] Example 5

[0245] like Figure 5 The diagram shown is a schematic of the optical lens structure of Example 5.

[0246] 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, first side surface of protective glass S12, second side surface of protective glass S13, and imaging surface IMA.

[0247] The first lens L1 has positive optical power, its first side surface S1 is concave, and its second side surface S2 is convex. The second lens L2 has positive optical power, its first side surface S3 is convex, and its second side surface S4 is convex. The third lens L3 has negative optical power, its first side surface S6 is concave, and its second side surface S7 is concave. The fourth lens L4 has positive optical power, its first side surface S8 is concave, and its second side surface S9 is convex. The fifth lens L5 has positive optical power, its first side surface S10 is convex, and its second side surface S11 is convex. Light from the first side passes sequentially through surfaces S1 to S13 and is finally imaged onto the imaging plane IMA.

[0248] In this example, the total effective focal length F of the optical lens is 50.500mm, the total length TTL of the optical lens is 86.990mm, and the maximum field of view FOV of the optical lens is 15.658°.

[0249] Table 5 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).

[0250] Surf Radius Thickness Nd Vd 1 -500.000 5.000 1.85 23.78 2 -79.601 5.134 3 57.750 4.600 1.66 50.87 4 -434.506 0.494 STO Infinity 3.628 6 -42.031 4.450 1.85 23.78 7 136.156 12.158 8 -164.086 6.753 1.49 70.44 9 -32.339 1.493 10 55.212 5.353 1.62 60.34 11 -473.721 36.517 12 Infinity 1.100 1.51 62.75 13 Infinity 0.310 IMA / /

[0251] Table 5

[0252] Example 6

[0253] like Figure 6 The diagram shown is a schematic of the optical lens structure of Example 6.

[0254] like Figure 6 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, first side surface of protective glass S12, second side surface of protective glass S13, and imaging surface IMA.

[0255] The first lens L1 has positive optical power, its first side surface S1 is concave, and its second side surface S2 is convex. The second lens L2 has positive optical power, its first side surface S3 is convex, and its second side surface S4 is convex. The third lens L3 has negative optical power, its first side surface S6 is concave, and its second side surface S7 is concave. The fourth lens L4 has positive optical power, its first side surface S8 is concave, and its second side surface S9 is convex. The fifth lens L5 has positive optical power, its first side surface S10 is convex, and its second side surface S11 is convex. Light from the first side passes sequentially through surfaces S1 to S13 and is finally imaged onto the imaging plane IMA.

[0256] In this example, the total effective focal length F of the optical lens is 50.500mm, the total length TTL of the optical lens is 86.990mm, and the maximum field of view FOV of the optical lens is 15.658°.

[0257] Table 6 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).

[0258] Surf Radius Thickness Nd Vd 1 -513.030 5.000 1.85 23.78 2 -79.894 5.126 3 57.743 4.600 1.66 50.87 4 -435.831 0.495 STO Infinity 3.630 6 -42.009 4.450 1.85 23.78 7 136.402 12.162 8 -164.000 6.753 1.49 70.44 9 -32.332 1.493 10 55.211 5.353 1.62 60.34 11 -473.619 36.517 12 Infinity 1.100 1.51 62.75 13 Infinity 0.310 IMA / /

[0259] Table 6

[0260] Example 7

[0261] like Figure 7 The diagram shown is a schematic of the optical lens structure of Example 7.

[0262] like Figure 7 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, first side surface of protective glass S12, second side surface of protective glass S13, and imaging surface IMA.

[0263] 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 positive optical power, its first side surface S3 is convex, and its second side surface S4 is concave. The third lens L3 has negative optical power, its first side surface S6 is concave, and its second side surface S7 is concave. The fourth lens L4 has positive optical power, its first side surface S8 is concave, and its second side surface S9 is convex. The fifth lens L5 has positive optical power, its first side surface S10 is convex, and its second side surface S11 is concave. Light from the first side passes sequentially through surfaces S1 to S13 and is finally imaged onto the imaging plane IMA.

[0264] In this example, the total effective focal length F of the optical lens is 50.680mm, the total length TTL of the optical lens is 85.122mm, and the maximum field of view FOV of the optical lens is 15.658°.

[0265] Table 7 shows the basic structural parameters of the optical lens in Example 7, where the units for radius of curvature and thickness / distance are millimeters (mm).

[0266]

[0267]

[0268] Table 7

[0269] Example 8

[0270] like Figure 8 The diagram shown is a schematic of the optical lens structure of Example 8.

[0271] 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, first side surface of protective glass S12, second side surface of protective glass S13, and imaging surface IMA.

[0272] 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 positive optical power, its first side surface S3 is convex, and its second side surface S4 is concave. The third lens L3 has negative optical power, its first side surface S6 is concave, and its second side surface S7 is concave. The fourth lens L4 has positive optical power, its first side surface S8 is concave, and its second side surface S9 is convex. The fifth lens L5 has positive optical power, its first side surface S10 is convex, and its second side surface S11 is concave. Light from the first side passes sequentially through surfaces S1 to S13 and is finally imaged onto the imaging plane IMA.

[0273] In this example, the total effective focal length F of the optical lens is 50.500mm, the total length TTL of the optical lens is 84.922mm, and the maximum field of view FOV of the optical lens is 15.658°.

[0274] Table 8 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).

[0275]

[0276]

[0277] Table 8

[0278] In summary, Examples 1 through 8 satisfy the relationships shown in Table 9.

[0279] Conditional expression / Example 1 2 3 4 5 6 7 8 TTL / F 1.720 1.673 1.726 1.746 1.723 1.723 1.680 1.682 TTL / H / FOV 0.402 0.391 0.403 0.408 0.401 0.401 0.391 0.392 TTL / H / θ 23.021 22.385 23.099 23.361 22.966 22.964 22.413 22.436 TTL / DMAX 2.173 2.112 2.163 2.181 2.175 2.175 2.128 2.123 (F*θ) / D 0.345 0.345 0.342 0.341 0.345 0.345 0.346 0.345 D / H / FOV 0.185 0.185 0.186 0.187 0.184 0.184 0.184 0.184 D / H / θ 10.594 10.601 10.679 10.711 10.560 10.559 10.532 10.568 D / H / F 0.057 0.057 0.058 0.059 0.057 0.057 0.057 0.057 |(H-F*θ) / (F*θ)| 0.000 0.000 0.001 0.001 0.004 0.004 0.003 0.003 BFL / TTL 0.436 0.449 0.438 0.434 0.436 0.436 0.445 0.446 BFL / TL 0.774 0.816 0.781 0.768 0.773 0.773 0.803 0.806 F / H 3.658 3.658 3.657 3.657 3.644 3.643 3.647 3.646 F / ENPD 1.300 1.300 1.300 1.300 1.300 1.300 1.300 1.300 F / ENPD / D 0.032 0.032 0.032 0.032 0.033 0.033 0.033 0.033 DST / F 0.653 0.650 0.666 0.658 0.664 0.664 0.665 0.666 (FOV×F) / H 57.271 57.271 57.249 57.257 57.053 57.047 57.104 57.091 (H / 2) / (F*tan(θ / 2)) 0.994 0.994 0.994 0.994 0.998 0.998 0.997 0.997 F1 / F 1.610 1.561 1.831 1.951 2.167 2.167 1.684 1.684 F2 / F 1.933 1.955 1.523 1.463 1.527 1.528 1.529 1.529 F3 / F -0.620 -0.613 -0.609 -0.600 -0.731 -0.731 -0.570 -0.572 F4 / F 1.460 1.433 1.454 1.445 1.600 1.600 1.343 1.349 F5 / F 1.407 1.425 1.470 1.435 1.574 1.574 1.550 1.546 F4 / F5 1.038 1.005 0.989 1.007 1.016 1.016 0.867 0.873 R7 / R8 8.772 9.532 7.943 7.936 5.074 5.072 8.169 8.273 Nd1 1.847 1.847 1.847 1.847 1.847 1.847 1.847 1.847 |SAG8 / SAG7| 9.981 10.804 9.246 9.264 5.767 5.765 9.597 9.715 arctan(SAG8 / D8) -0.163 -0.162 -0.169 -0.169 -0.163 -0.164 -0.183 -0.183 D10 / H 2.678 2.680 2.700 2.708 2.670 2.669 2.663 2.672 D10*BFL / H 101.533 101.698 102.411 102.591 101.253 101.243 100.940 101.277 R3 / |R4| 0.222 0.264 0.252 0.240 0.133 0.132 0.073 0.073

[0280] Table 9

[0281] Table 10 gives the effective focal length F of the optical lenses in Examples 1 to 8, and the effective focal lengths of each lens from F1 to F5, etc. (unit: mm).

[0282] Table 10

[0283] 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.

[0284] 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.

[0285] 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.

[0286] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An optical lens characterized in that, The total number of lenses of the optical lens is five, sequentially comprising from the first side to the second side: a first lens with positive refractive power; a second lens with positive refractive power, the first side of the second lens being convex; a third lens with negative refractive power, the first side of the third lens being concave and the second side being concave; a fourth lens with positive refractive power, the first side of the fourth lens being concave and the second side being convex; a fifth lens with positive refractive power, the first side of the fifth lens being convex; the focal length F5 of the fifth lens and the total focal length F of the optical lens satisfy: 1≤F5 / F≤1.

9.

2. The optical lens of claim 1, wherein, the first side of the first lens is convex and the second side is convex.

3. The optical lens of claim 1, wherein, the first side of the first lens is convex and the second side is concave.

4. The optical lens of claim 1, wherein, the first side of the first lens is concave and the second side is convex.

5. The optical lens of claim 1, wherein, the second side of the second lens is convex.

6. The optical lens of claim 1, wherein, the second side of the second lens is concave.

7. The optical lens of claim 1, wherein, the second side of the fifth lens is convex.

8. The optical lens of claim 1, wherein, the second side of the fifth lens is concave.

9. The optical lens of claim 1, wherein, The optical lens further comprises a diaphragm, which is located between the second lens and the third lens.

10. The optical lens of any of claims 1 to 9, wherein, the total optical length of the optical lens, i.e. the distance TTL from the first side center of the first lens of the optical lens to the center of the imaging surface of the optical lens, and the total focal length F of the optical lens satisfy: TTL / F≤2.

2.

11. The optical lens of any of claims 1 to 9, wherein, the total optical length of the optical lens, i.e. the distance TTL from the first side center of the first lens of the optical lens to the center of the imaging surface of the optical lens, the image height H corresponding to the maximum field angle of the optical lens, and the maximum field angle FOV of the optical lens satisfy: TTL / H / FOV≤1.

2.

12. The optical lens of any of claims 1 to 9, wherein, the total optical length of the optical lens, i.e. the distance TTL from the first side center of the first lens of the optical lens to the center of the imaging surface of the optical lens, the image height H corresponding to the maximum field angle of the optical lens, and the radian value θ of the maximum field angle of the optical lens satisfy: TTL / H / θ≤30.

13. The optical lens of any of claims 1 to 9, wherein, the total optical length of the optical lens, i.e. the distance TTL from the first side center of the first lens of the optical lens to the center of the imaging surface of the optical lens, and the maximum diameter DMAX of all lenses in the optical lens satisfy: TTL / DMAX≤5.

14. The optical lens of any of claims 1 to 9, wherein, the total focal length F of the optical lens, the radian value θ of the maximum field angle of the optical lens, and the maximum light passing diameter D of the first side of the first lens corresponding to the maximum field angle of the optical lens satisfy: (F*θ) / D≥0.

1.

15. The optical lens of any of claims 1 to 9, wherein, the maximum light passing diameter D of the first side of the first lens corresponding to the maximum field angle of the optical lens, the image height H corresponding to the maximum field angle of the optical lens, and the maximum field angle FOV of the optical lens satisfy: D / H / FOV≤0.

8.

16. The optical lens of any of claims 1 to 9, wherein, A maximum light aperture D of a first side of the first lens corresponding to a maximum field of view angle of the optical lens, an image height H corresponding to the maximum field of view angle of the optical lens, and an arc value θ of the maximum field of view angle of the optical lens satisfy: D / H / θ≤18.

17. The optical lens of any of claims 1 to 9, wherein, A maximum light aperture D of a first side of the first lens corresponding to a maximum field of view angle of the optical lens, an image height H corresponding to the maximum field of view angle of the optical lens, and a total focal length F of the optical lens satisfy: D / H / F≤0.

07.

18. The optical lens of any of claims 1 to 9, wherein, An image height H corresponding to a maximum field of view angle of the optical lens, a total focal length F of the optical lens, and an arc value θ of the maximum field of view angle of the optical lens satisfy: |(H-F*θ) / (F*θ)|≤0.

1.

19. The optical lens of any of claims 1 to 9, wherein, An optical back focal length BFL of the optical lens, that is, a distance from a second side center of a last lens of the optical lens to a center of an imaging surface, and a total optical length TTL of the optical lens, that is, a distance from a first side center of the first lens of the optical lens to the center of the imaging surface of the optical lens, satisfy: BFL / TTL≥0.

4.

20. The optical lens of any of claims 1 to 9, wherein, An optical back focal length BFL of the optical lens, that is, a distance from a second side center of a last lens of the optical lens to a center of an imaging surface, and a lens group length TL of the optical lens, that is, a distance from the first side center of the first lens of the optical lens to the second side center of the last lens of the optical lens, satisfy: BFL / TL≥0.

6.

21. The optical lens of any of claims 1 to 9, wherein, A total focal length F of the optical lens and an image height H corresponding to a maximum field of view angle of the optical lens satisfy: F / H≤7.

22. The optical lens of any of claims 1 to 9, wherein, A total focal length F of the optical lens and an entrance pupil diameter ENPD of the optical lens satisfy: F / ENPD≤1.

45.

23. The optical lens of any of claims 1 to 9, wherein, A total focal length F of the optical lens, an entrance pupil diameter ENPD of the optical lens, and a maximum light aperture D of a first side of the first lens corresponding to a maximum field of view angle of the optical lens satisfy: F / ENPD / D≤0.

04.

24. The optical lens of any of claims 1 to 9, wherein, An effective aperture DST of a diaphragm and a total focal length F of the optical lens satisfy: DST / F≥0.

2.

25. The optical lens of any of claims 1 to 9, wherein, A maximum field of view angle FOV of the optical lens, a total focal length F of the optical lens, and an image height H corresponding to a maximum field of view angle of the optical lens satisfy: (FOV*F) / H≥35.

26. The optical lens of any of claims 1 to 9, wherein, An image height H corresponding to a maximum field of view angle of the optical lens, a total focal length F of the optical lens, and an arc value θ of the maximum field of view angle of the optical lens satisfy: 0.8≤(H / 2) / (F*tan(θ / 2))≤1.

2.

27. The optical lens of any of claims 1 to 9, wherein, A focal length F1 of the first lens and a total focal length F of the optical lens satisfy: F1 / F≥0.

5.

28. The optical lens of any of claims 1 to 9, wherein, A focal length F2 of the second lens and a total focal length F of the optical lens satisfy: 0.8≤F2 / F≤4.

6.

29. The optical lens of any of claims 1 to 9, wherein, A focal length F3 of the third lens and a total focal length F of the optical lens satisfy: -0.98≤F3 / F≤-0.

1.

30. The optical lens of any of claims 1 to 9, wherein, A ratio F4 / F of a focal length F4 of the fourth lens and a total focal length F of the optical lens satisfies: 1≤F4 / F≤1.

9.

31. The optical lens of any of claims 1 to 9, wherein, A ratio F4 / F5 of the focal length F4 of the fourth lens and a focal length F5 of the fifth lens satisfies: 0.6≤F4 / F5≤1.

3.

32. The optical lens of any of claims 1 to 9, wherein, A ratio R7 / R8 of a curvature radius R7 of the first side surface of the fourth lens and a curvature radius R8 of the second side surface of the fourth lens satisfies: 4≤R7 / R8≤12.

33. The optical lens of any of claims 1 to 9, wherein, A refractive index Nd1 of the first lens satisfies: Nd1≥1.

70.

34. The optical lens of any of claims 1 to 9, wherein, A ratio |SAG8 / SAG7| of a sag SAG7 of the first side surface of the fourth lens and a sag SAG8 of the second side surface of the fourth lens satisfies: |SAG8 / SAG7|≥1.

1.

35. The optical lens of any of claims 1 to 9, wherein, A ratio arctan(SAG8 / D8) of the sag SAG8 of the second side surface of the fourth lens and a maximum light aperture D8 of the second side surface of the fourth lens corresponding to a maximum field angle of the optical lens satisfies: arctan(SAG8 / D8)≤-0.

13.

36. The optical lens of any of claims 1 to 9, wherein, A ratio D10 / H of a maximum light aperture D10 of the second side surface of the fifth lens corresponding to the maximum field angle of the optical lens and an image height H corresponding to the maximum field angle of the optical lens satisfies: D10 / H≥1.

2.

37. The optical lens of any of claims 1 to 9, wherein, A ratio D10*BFL / H of the maximum light aperture D10 of the second side surface of the fifth lens corresponding to the maximum field angle of the optical lens, an optical back focal length BFL of the optical lens, i.e., a distance from a second side center of a last lens of the optical lens to a center of an imaging surface, and the image height H corresponding to the maximum field angle of the optical lens satisfies: D10*BFL / H≥80.

38. The optical lens of any of claims 1 to 9, wherein, A ratio R3 / |R4| of a curvature radius R3 of the first side surface of the second lens and a curvature radius R4 of the second side surface of the second lens satisfies: 0.01≤R3 / |R4|≤0.

7.

39. An optical lens, characterized in that, The total number of lenses of the optical lens is five, including, in order from the first side to the second side: a first lens with positive refractive power; a second lens with positive refractive power; a third lens with negative refractive power; a fourth lens with positive refractive power; a fifth lens with positive refractive power; wherein a ratio F2 / F of a focal length F2 of the second lens and a total focal length F of the optical lens satisfies: 0.8≤F2 / F≤4.6; a ratio F5 / F of a focal length F5 of the fifth lens and the total focal length F of the optical lens satisfies: 1≤F5 / F≤1.

9.

40. The optical lens of claim 39, wherein, The first side surface of the first lens is convex, and the second side surface is convex.

41. The optical lens of claim 39, wherein, The first side surface of the first lens is convex, and the second side surface is concave.

42. The optical lens of claim 39, wherein, The first side surface of the first lens is concave, and the second side surface is convex.

43. The optical lens of claim 39, wherein, The first side surface of the second lens is convex, and the second side surface is convex.

44. The optical lens of claim 39, wherein, The first side surface of the second lens is convex, and the second side surface is concave.

45. The optical lens of claim 39, wherein, The first side surface of the third lens is concave, and the second side surface is concave.

46. The optical lens of claim 39, wherein, The first side surface of the fourth lens is concave, and the second side surface is convex.

47. The optical lens of claim 39, wherein, The first side surface of the fifth lens is convex, and the second side surface is convex.

48. The optical lens of claim 39, wherein, The first side surface of the fifth lens is convex, and the second side surface is concave.

49. The optical lens of claim 39, wherein, The optical lens further comprises a diaphragm, and the diaphragm is located between the second lens and the third lens.

50. The optical lens of any of claims 39-49, wherein, An optical total length of the optical lens, i.e., a center distance TTL from a first side center of the first lens of the optical lens to an imaging surface of the optical lens, and a total focal length F of the optical lens satisfy: TTL / F≤2.

2.

51. The optical lens of any of claims 39-49, wherein, An optical total length of the optical lens, i.e., a center distance TTL from a first side center of the first lens of the optical lens to an imaging surface of the optical lens, a maximum image height H corresponding to a maximum field of view angle of the optical lens, and a maximum field of view angle FOV of the optical lens satisfy: TTL / H / FOV≤1.

2.

52. The optical lens of any of claims 39-49, wherein, An optical total length of the optical lens, i.e., a center distance TTL from a first side center of the first lens of the optical lens to an imaging surface of the optical lens, a maximum image height H corresponding to a maximum field of view angle of the optical lens, and an arc value θ of the maximum field of view angle of the optical lens satisfy: TTL / H / θ≤30.

53. The optical lens of any of claims 39-49, wherein, An optical total length of the optical lens, i.e., a center distance TTL from a first side center of the first lens of the optical lens to an imaging surface of the optical lens, and a maximum diameter DMAX of all lenses in the optical lens satisfy: TTL / DMAX≤5.

54. The optical lens of any of claims 39-49, wherein, A total focal length F of the optical lens, an arc value θ of a maximum field of view angle of the optical lens, and a maximum light passing diameter D of a first side of the first lens corresponding to the maximum field of view angle of the optical lens satisfy: (F*θ) / D≥0.

1.

55. The optical lens of any of claims 39-49, wherein, A maximum light passing diameter D of a first side of the first lens corresponding to a maximum field of view angle of the optical lens, a maximum image height H corresponding to the maximum field of view angle of the optical lens, and a maximum field of view angle FOV of the optical lens satisfy: D / H / FOV≤0.

8.

56. The optical lens of any of claims 39-49, wherein, A maximum light passing diameter D of a first side of the first lens corresponding to a maximum field of view angle of the optical lens, a maximum image height H corresponding to the maximum field of view angle of the optical lens, and an arc value θ of the maximum field of view angle of the optical lens satisfy: D / H / θ≤18.

57. The optical lens of any of claims 39-49, wherein, A maximum light passing diameter D of a first side of the first lens corresponding to a maximum field of view angle of the optical lens, a maximum image height H corresponding to the maximum field of view angle of the optical lens, and a total focal length F of the optical lens satisfy: D / H / F≤0.

07.

58. The optical lens of any of claims 39-49, wherein, A maximum image height H corresponding to a maximum field of view angle of the optical lens, a total focal length F of the optical lens, and an arc value θ of the maximum field of view angle of the optical lens satisfy: |(H-F*θ) / (F*θ)|≤0.

1.

59. The optical lens of any of claims 39-49, wherein, An optical back focal length of the optical lens, i.e., a center distance BFL from a second side center of a last lens of the optical lens to an imaging surface, and an optical total length of the optical lens, i.e., a center distance TTL from a first side center of the first lens of the optical lens to an imaging surface of the optical lens satisfy: BFL / TTL≥0.

4.

60. The optical lens of any of claims 39-49, wherein, An optical back focal length of the optical lens, i.e., a distance BFL from a center of a second side of a last lens of the optical lens to a center of an imaging surface, and a lens group length of the optical lens, i.e., a distance TL between a first side of the first lens of the optical lens and the center of the second side of the last lens of the optical lens, satisfy: BFL / TL≥0.

6.

61. The optical lens of any of claims 39-49, wherein, An entire group focal length F of the optical lens and an image height H corresponding to a maximum field of view angle of the optical lens satisfy: F / H≤7.

62. The optical lens of any of claims 39-49, wherein, An entire group focal length F of the optical lens and an entrance pupil diameter ENPD of the optical lens satisfy: F / ENPD≤1.

45.

63. The optical lens of any of claims 39-49, wherein, An entire group focal length F of the optical lens, an entrance pupil diameter ENPD of the optical lens, and a maximum clear aperture D of a first side of the first lens corresponding to a maximum field of view angle of the optical lens satisfy: F / ENPD / D≤0.

04.

64. The optical lens of any of claims 39-49, wherein, An effective aperture DST of the diaphragm and an entire group focal length F of the optical lens satisfy: DST / F≥0.

2.

65. The optical lens of any of claims 39-49, wherein, A maximum field of view angle FOV of the optical lens, an entire group focal length F of the optical lens, and an image height H corresponding to the maximum field of view angle of the optical lens satisfy: (FOV*F) / H≥35.

66. The optical lens of any of claims 39-49, wherein, An image height H corresponding to a maximum field of view angle of the optical lens, an entire group focal length F of the optical lens, and an arc value θ of the maximum field of view angle of the optical lens satisfy: 0.8≤(H / 2) / (F*tan(θ / 2))≤1.

2.

67. The optical lens of any of claims 39-49, wherein, A focal length F1 of the first lens and an entire group focal length F of the optical lens satisfy: F1 / F≥0.

5.

68. The optical lens of any of claims 39-49, wherein, A focal length F3 of the third lens and an entire group focal length F of the optical lens satisfy: -0.98≤F3 / F≤-0.

1.

69. The optical lens of any of claims 39-49, wherein, A focal length F4 of the fourth lens and an entire group focal length F of the optical lens satisfy: 1≤F4 / F≤1.

9.

70. The optical lens of any of claims 39-49, wherein, A focal length F4 of the fourth lens and a focal length F5 of the fifth lens satisfy: 0.6≤F4 / F5≤1.

3.

71. The optical lens of any of claims 39-49, wherein, A radius of curvature R7 of a first side of the fourth lens and a radius of curvature R8 of a second side of the fourth lens satisfy: 4≤R7 / R8≤12.

72. The optical lens of any of claims 39-49, wherein, A refractive index Nd1 of the first lens satisfies: Nd1≥1.

70.

73. The optical lens of any of claims 39-49, wherein, A sag SAG7 of the first side of the fourth lens and a sag SAG8 of the second side of the fourth lens satisfy: |SAG8 / SAG7|≥1.

1.

74. The optical lens of any of claims 39-49, wherein, A sag SAG8 of the second side of the fourth lens and a maximum clear aperture D8 of the second side of the fourth lens corresponding to a maximum field of view angle of the optical lens satisfy: arctan(SAG8 / D8)≤-0.

13.

75. The optical lens of any of claims 39-49, wherein, A maximum clear aperture D10 of the second side of the fifth lens corresponding to the maximum field of view angle of the optical lens and an image height H corresponding to the maximum field of view angle of the optical lens satisfy: D10 / H≥1.

2.

76. The optical lens of any of claims 39-49, wherein, A maximum light passing aperture D10 of a second side surface of the fifth lens corresponding to a maximum field angle of the optical lens, an optical back focus of the optical lens, i.e. a distance BFL from a center of a second side surface of a last lens of the optical lens to a center of an imaging surface, and an image height H corresponding to the maximum field angle of the optical lens satisfy: D10*BFL / H≥80.

77. The optical lens of any of claims 39-49, wherein, A radius of curvature R3 of a first side surface of the second lens and a radius of curvature R4 of a second side surface of the second lens satisfy: 0.01≤R3 / |R4|≤0.

7.

78. An electronic device, comprising: An imaging element for converting an optical image formed by the optical lens into an electric signal.

Images