Optical lens and electronic equipment

Abstract

The invention provides an optical lens and electronic equipment. The optical lens sequentially comprises, from a first side to a second side, a first lens with positive focal power, a second lens with negative focal power and a third lens with positive focal power, the first side surface of the second lens is a concave surface, and the second side surface of the second lens is a concave surface; the third lens has positive focal power, and the second side surface of the third lens is a convex surface; the fourth lens has focal power, and the first side surface of the fourth lens is a convex surface; the fifth lens has focal power; and the sixth lens has negative focal power. According to the invention, the problems of high resolution, miniaturization, long back focal length, small CRA, low sensitivity and high light flux of an optical lens in the prior art are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of optical imaging equipment, and in particular to an optical lens and an electronic device. Background Art

[0002] With the development of science and technology, the demand for optical lenses in daily life is increasing, and optical lenses are also applied to more and more scenarios. For example, in the automobile driving industry, for driving safety, it is necessary to detect the driving environment more accurately, and optical lenses have become a key device for detecting information around the car. With the continuous development of automobile driving systems, especially the innovation of autonomous driving technology brought about by the development of big data and artificial intelligence in recent years, the market requirements for automotive front-view optical lenses have become more stringent, such as the contradiction between low cost, low sensitivity and high resolution, the contradiction between small aperture, miniaturization and high light flux, high pixels, and the requirements for field of view under different use conditions. At the same time, considering the high requirements for safety in automobile driving, the thermal stability and vibration stability performance of optical lenses account for an increasing proportion.

[0003] However, there are still some problems with the current optical lenses. For example, if the vehicle-mounted lens requires better resolution performance, it is necessary to use aspherical lenses to improve the resolution, but this will increase the cost and it is difficult to achieve low cost; at the same time, the vehicle-mounted front-view optical lens requires good imaging performance in the medium and long distances, and the existing lens architecture that only uses 6 spherical lenses has the problem of not being able to take into account high resolution, high light throughput and low sensitivity; in addition, it is difficult for the existing vehicle-mounted lenses to achieve back focal length, miniaturization and small CRA at the same time, and cannot be well matched to assemble vehicle-mounted chips; existing optical lenses usually require a higher light throughput, so a larger light transmission aperture needs to be set, which is difficult to take into account the miniaturization requirements.

[0004] That is to say, the optical lenses in the prior art have the problem that it is difficult to simultaneously take into account high resolution, miniaturization, back focal length, small CRA, low sensitivity and high light throughput. Summary of the invention

[0005] The main purpose of the present invention is to provide an optical lens and an electronic device to solve the problem that the optical lens in the prior art has difficulty in taking high resolution, miniaturization, back focal length, small CRA, low sensitivity and high light throughput into consideration at the same time.

[0006] To achieve the above objective, according to one aspect of the present invention, an optical lens is provided, which includes, from the first side to the second side: a first lens with positive optical power, wherein the first side surface of the first lens is a convex surface; a second lens with negative optical power, wherein the first side surface of the second lens is a concave surface, and the second side surface is a concave surface; a third lens with positive optical power, wherein the second side surface of the third lens is a convex surface; a fourth lens with optical power, wherein the first side surface of the fourth lens is a convex surface; a fifth lens with optical power; and a sixth lens with negative optical power.

[0007] Furthermore, the second side surface of the first lens is a concave surface.

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

[0009] Furthermore, the first side surface of the third lens is a convex surface.

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

[0011] Furthermore, the fourth lens has positive power, and the second side surface of the fourth lens is a convex surface.

[0012] Furthermore, the fourth lens has negative optical power, and the second side surface of the fourth lens is a concave surface.

[0013] Furthermore, the fifth lens has negative optical power, and the first side surface of the fifth lens is a concave surface, and the second side surface is a convex surface.

[0014] Furthermore, the fifth lens has negative optical power, and the first side surface of the fifth lens is a concave surface, and the second side surface is a concave surface.

[0015] Furthermore, the fifth lens has positive power, and the first side surface of the fifth lens is a convex surface, and the second side surface is a concave surface.

[0016] Furthermore, the first side surface of the sixth lens is a concave surface, and the second side surface is a convex surface.

[0017] Furthermore, the first side surface of the sixth lens is a concave surface, and the second side surface is a concave surface.

[0018] Furthermore, the first side surface of the sixth lens is a convex surface, and the second side surface is a concave surface.

[0019] Furthermore, the fourth lens and the fifth lens are cemented together to form a doublet lens.

[0020] Furthermore, the optical lens also includes a stop, and the stop is arranged between the second lens and the third lens.

[0021] Furthermore, the total optical length of the optical lens, that is, the center distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens and the entire focal length value F of the optical lens satisfy: TTL / F≤4.

[0022] Furthermore, the entire focal length value F of the optical lens, the arc value θ of the maximum field angle of the optical lens, and the maximum light aperture D of the first side surface of the first lens satisfy: (F*θ) / D≥0.2.

[0023] Furthermore, the maximum light clearance aperture D of the first side surface of the first 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≤0.08.

[0024] Furthermore, the maximum light clearance diameter D of the first side surface of the first lens, the image height H corresponding to the maximum field angle of the optical lens, and the entire focal length value F of the optical lens satisfy: D / H / F≤0.2.

[0025] Furthermore, the entire focal length value F of the optical lens and the arc value θ of the maximum field angle of the optical lens satisfy: F / θ≤30.

[0026] Furthermore, the image height H corresponding to the maximum field angle of the optical lens, the entire focal length value F of the optical lens and the arc value θ of the maximum field angle of the optical lens satisfy: |(HF*θ) / (F*θ)|≤0.06.

[0027] Furthermore, the entire focal length value F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy: F / ENPD≤3.

[0028] Furthermore, the image height H corresponding to the maximum field angle of the optical lens, the entire focal length value F of the optical lens and the arc value θ of the maximum field angle of the optical lens satisfy: 0.4≤(H / 2) / (F*tan(θ / 2))≤2.

[0029] Further, a curvature radius R4 of the second side surface of the second lens and a curvature radius R5 of the first side surface of the third lens satisfy: |R4 / R5|≤20.

[0030] Furthermore, a curvature radius R10 of the second side surface of the fifth lens and a curvature radius R11 of the first side surface of the sixth lens satisfy: |R10 / R11|≥4.3.

[0031] Furthermore, the focal length F6 of the sixth lens element and the focal length F of the entire optical lens group satisfy: F6 / F≥-7.

[0032] Furthermore, the focal length F2 of the second lens element and the focal length F3 of the third lens element satisfy: -5≤F2 / F3≤-0.02.

[0033] Furthermore, the entire focal length value F of the optical lens, 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: |F / R3|+|F / R4|≤8.

[0034] Furthermore, the air distance d7 between the third lens and the fourth lens and the optical back focus 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 surface, satisfy: (d7*BFL) / (d7+BFL)≤1.

[0035] Furthermore, a radius of curvature R6 of the second side surface of the third lens element satisfies the following relationship with the focal length F of the entire optical lens group: |R6 / F|≤10.

[0036] Furthermore, a radius of curvature R7 of the first side surface of the fourth lens element and a focal length F of the entire optical lens group satisfy: R7 / F≤7.

[0037] Furthermore, a radius of curvature R10 of the second side surface of the fifth lens element satisfies the relationship between the entire focal length F of the optical lens set: |R10 / F|≥1.2.

[0038] Furthermore, a curvature radius R11 of the first side surface of the sixth lens element satisfies the relationship between the entire focal length F of the optical lens set: |R11 / F|≤5.

[0039] Furthermore, a radius of curvature R10 of the second side surface of the fifth lens and the total optical length of the optical lens, that is, a distance TTL from the center of the first side of the first lens to the center of the imaging surface of the optical lens, satisfy: |R10 / TTL|≥0.8.

[0040] Furthermore, the center thickness d6 of the third lens and the total optical length of the optical lens, that is, the center distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens, satisfy: d6 / TTL≥0.02.

[0041] Furthermore, the total optical length of the optical lens, that is, the center distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens and the center thickness d11 of the sixth lens satisfy: TTL / d11≥6.

[0042] Furthermore, the center thickness d8 of the fourth lens, the center thickness d9 of the fifth lens and the total optical length of the optical lens, that is, the center distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens satisfy: (d8+d9) / TTL≥0.05.

[0043] Furthermore, the distance d26 between the first lens and the third lens, the center thickness d6 of the third lens and the total optical length of the optical lens, that is, the center distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens satisfy: |(d26-d6) / TTL|≤0.15.

[0044] Furthermore, a center thickness d3 of the second lens and a center thickness d6 of the third lens satisfy: 0.2≤d3 / d6.

[0045] Further, the distance d26 between the first lens and the third lens, the center thickness d6 of the third lens, and the curvature radius R5 of the first side surface of the third lens satisfy: |(d26-d6) / R5|≤0.4.

[0046] Furthermore, a maximum light aperture D of the first side surface of the first lens and a curvature radius R1 of the first side surface of the first lens satisfy: D / R1≥0.05.

[0047] Furthermore, the maximum effective light clearance aperture D7 of the first side surface of the fourth lens corresponding to the maximum field angle of the optical lens, the radius of curvature R7 of the first side surface of the fourth lens, and the vector height SAG7 of the first side surface of the fourth lens satisfy: arctan(D7 / (R7-SAG7))≥0.2.

[0048] Furthermore, a radius of curvature R10 of the second side surface of the fifth lens, a center thickness d8 of the fourth lens, and a center thickness d9 of the fifth lens satisfy: |R10 / (d8+d9)|≥2.5.

[0049] Furthermore, a curvature radius R10 of the second side surface of the fifth lens and a center thickness d9 of the fifth lens satisfy: |R10 / d9|≥5.2.

[0050] Furthermore, a curvature radius R12 of the second side surface of the sixth lens and a center thickness d11 of the sixth lens satisfy: |R12 / d11|≤55.

[0051] Further, a curvature radius R11 of the first side surface of the sixth lens and a curvature radius R12 of the second side surface of the sixth lens satisfy: |R11 / R12|≥0.1.

[0052] According to another aspect of the present invention, an optical lens is provided, comprising, from a first side to a second side, in sequence: a first lens having positive optical power; a second lens having negative optical power; a third lens having positive optical power; a fourth lens having optical power; a fifth lens having optical power; a sixth lens having negative optical power; a curvature radius R10 of a second side surface of the fifth lens and a curvature radius R11 of a first side surface of the sixth lens satisfying: |R10 / R11|≥4.3.

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

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

[0055] Furthermore, the first side surface of the second lens is a concave surface, and the second side surface is a concave surface.

[0056] Furthermore, the first side surface of the third lens is a convex surface, and the second side surface is a convex surface.

[0057] Furthermore, the first side surface of the third lens is a concave surface, and the second side surface is a convex surface.

[0058] Furthermore, the fourth lens has positive power, and the first side surface of the fourth lens is a convex surface, and the second side surface is a convex surface.

[0059] Furthermore, the fourth lens has negative optical power, and the first side surface of the fourth lens is a convex surface, and the second side surface is a concave surface.

[0060] Furthermore, the fifth lens has negative optical power, and the first side surface of the fifth lens is a concave surface, and the second side surface is a convex surface.

[0061] Furthermore, the fifth lens has negative optical power, and the first side surface of the fifth lens is a concave surface, and the second side surface is a concave surface.

[0062] Furthermore, the fifth lens has positive power, and the first side surface of the fifth lens is a convex surface, and the second side surface is a concave surface.

[0063] Furthermore, the first side surface of the sixth lens is a concave surface, and the second side surface is a convex surface.

[0064] Furthermore, the first side surface of the sixth lens is a concave surface, and the second side surface is a concave surface.

[0065] Furthermore, the first side surface of the sixth lens is a convex surface, and the second side surface is a concave surface.

[0066] Furthermore, the fourth lens and the fifth lens are cemented together to form a doublet lens.

[0067] Furthermore, the optical lens also includes a stop, and the stop is arranged between the second lens and the third lens.

[0068] Furthermore, the total optical length of the optical lens, that is, the center distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens and the entire focal length value F of the optical lens satisfy: TTL / F≤4.

[0069] Furthermore, the entire focal length value F of the optical lens, the arc value θ of the maximum field angle of the optical lens, and the maximum light aperture D of the first side surface of the first lens satisfy: (F*θ) / D≥0.2.

[0070] Furthermore, the maximum light clearance aperture D of the first side surface of the first 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≤0.08.

[0071] Furthermore, the maximum light clearance diameter D of the first side surface of the first lens, the image height H corresponding to the maximum field angle of the optical lens, and the entire focal length value F of the optical lens satisfy: D / H / F≤0.2.

[0072] Furthermore, the entire focal length value F of the optical lens and the arc value θ of the maximum field angle of the optical lens satisfy: F / θ≤30.

[0073] Furthermore, the image height H corresponding to the maximum field angle of the optical lens, the entire focal length value F of the optical lens and the arc value θ of the maximum field angle of the optical lens satisfy: |(HF*θ) / (F*θ)|≤0.06.

[0074] Furthermore, the entire focal length value F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy: F / ENPD≤3.

[0075] Furthermore, the image height H corresponding to the maximum field angle of the optical lens, the entire focal length value F of the optical lens and the arc value θ of the maximum field angle of the optical lens satisfy: 0.4≤(H / 2) / (F*tan(θ / 2))≤2.

[0076] Further, a curvature radius R4 of the second side surface of the second lens and a curvature radius R5 of the first side surface of the third lens satisfy: |R4 / R5|≤20.

[0077] Furthermore, the focal length F6 of the sixth lens element and the focal length F of the entire optical lens group satisfy: F6 / F≥-7.

[0078] Furthermore, the focal length F2 of the second lens element and the focal length F3 of the third lens element satisfy: -5≤F2 / F3≤-0.02.

[0079] Furthermore, the entire focal length value F of the optical lens, 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: |F / R3|+|F / R4|≤8.

[0080] Furthermore, the air distance d7 between the third lens and the fourth lens and the optical back focus 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 surface, satisfy: (d7*BFL) / (d7+BFL)≤1.

[0081] Furthermore, a radius of curvature R6 of the second side surface of the third lens element satisfies the following relationship with the focal length F of the entire optical lens group: |R6 / F|≤10.

[0082] Furthermore, a radius of curvature R7 of the first side surface of the fourth lens element and a focal length F of the entire optical lens group satisfy: R7 / F≤7.

[0083] Furthermore, a radius of curvature R10 of the second side surface of the fifth lens element satisfies the relationship between the entire focal length F of the optical lens set: |R10 / F|≥1.2.

[0084] Furthermore, a curvature radius R11 of the first side surface of the sixth lens element satisfies the relationship between the entire focal length F of the optical lens set: |R11 / F|≤5.

[0085] Furthermore, a radius of curvature R10 of the second side surface of the fifth lens and the total optical length of the optical lens, that is, a distance TTL from the center of the first side of the first lens to the center of the imaging surface of the optical lens, satisfy: |R10 / TTL|≥0.8.

[0086] Furthermore, the center thickness d6 of the third lens and the total optical length of the optical lens, that is, the center distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens, satisfy: d6 / TTL≥0.02.

[0087] Furthermore, the total optical length of the optical lens, that is, the center distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens and the center thickness d11 of the sixth lens satisfy: TTL / d11≥6.

[0088] Furthermore, the center thickness d8 of the fourth lens, the center thickness d9 of the fifth lens and the total optical length of the optical lens, that is, the center distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens satisfy: (d8+d9) / TTL≥0.05.

[0089] Furthermore, the distance d26 between the first lens and the third lens, the center thickness d6 of the third lens and the total optical length of the optical lens, that is, the center distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens satisfy: |(d26-d6) / TTL|≤0.15.

[0090] Furthermore, a center thickness d3 of the second lens and a center thickness d6 of the third lens satisfy: 0.2≤d3 / d6.

[0091] Further, the distance d26 between the first lens and the third lens, the center thickness d6 of the third lens, and the curvature radius R5 of the first side surface of the third lens satisfy: |(d26-d6) / R5|≤0.4.

[0092] Furthermore, a maximum light aperture D of the first side surface of the first lens and a curvature radius R1 of the first side surface of the first lens satisfy: D / R1≥0.05.

[0093] Furthermore, the maximum effective light clearance aperture D7 of the first side surface of the fourth lens corresponding to the maximum field angle of the optical lens, the radius of curvature R7 of the first side surface of the fourth lens, and the vector height SAG7 of the first side surface of the fourth lens satisfy: arctan(D7 / (R7-SAG7))≥0.2.

[0094] Furthermore, a radius of curvature R10 of the second side surface of the fifth lens, a center thickness d8 of the fourth lens, and a center thickness d9 of the fifth lens satisfy: |R10 / (d8+d9)|≥2.5.

[0095] Furthermore, a curvature radius R10 of the second side surface of the fifth lens and a center thickness d9 of the fifth lens satisfy: |R10 / d9|≥5.2.

[0096] Furthermore, a curvature radius R12 of the second side surface of the sixth lens and a center thickness d11 of the sixth lens satisfy: |R12 / d11|≤55.

[0097] Further, a curvature radius R11 of the first side surface of the sixth lens and a curvature radius R12 of the second side surface of the sixth lens satisfy: |R11 / R12|≥0.1.

[0098] According to another aspect of the present invention, an electronic device is provided, comprising the above-mentioned optical lens and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

[0099] By applying the technical solution of the present invention, the optical lens comprises, from the first side to the second side, a first lens with positive optical power, a second lens with negative optical power, a third lens with positive optical power, a fourth lens with optical power and a fifth lens with optical power; the first side surface of the first lens is convex; the first side surface of the second lens is concave, and the second side surface is concave; the second side surface of the third lens is convex; the first side surface of the fourth lens is convex; and the sixth lens has negative optical power.

[0100] The first lens has positive focal length, and the first side of the first lens is convex, which can make the incident angle of light smaller, and the corresponding image height becomes smaller under the same field of view, which is helpful to receive light at a larger angle and increase the luminous flux; the second side of the first lens can be concave or convex. When the second side of the first lens is concave, it can smooth the light trend, improve the resolution, and reduce the system sensitivity. When the second side of the first lens is convex, it can further compress the light, reduce the aperture of the subsequent lens, and achieve miniaturization.

[0101] The second lens has negative optical power, and the first side surface of the second lens is concave, which effectively smoothes the trend of the front light, diverges the light, reduces the system sensitivity, and is beneficial to the subsequent increase of the image plane and the correction of aberrations; the second side surface is concave, which further diverges the light. Under the same field of view angle, the subsequent optical system can have a larger light receiving surface, expand the image plane, and at the same time realize the increase of the physical aperture of the aperture, the increase of the aperture, the realization of a larger amount of light input, and the increase of the image plane brightness.

[0102] The third lens has positive focal power, and the first side surface of the third lens can be convex or concave. When the first side surface of the third lens is convex, it can effectively converge light, smooth the trend of light, reduce system sensitivity, and reduce the rear port diameter at the same time, which is conducive to miniaturization; when the first side surface of the third lens is concave, the subsequent optical system can have a larger light receiving surface, which is conducive to balancing aberrations and improving resolution; the second side surface of the third lens is convex, and has a significant difference in shape from the first side surface of the fourth lens, which further changes the trend of light, compresses the subsequent diameter, and helps to achieve miniaturization.

[0103] The fourth lens has positive power or negative power, and the first side of the fourth lens is convex, which effectively changes the light trend, converges the light, and compresses the back port diameter; the second side of the fourth lens is convex or concave. When the second side of the fourth lens is convex, it is conducive to double gluing with the fifth lens, and the aberration can be effectively improved and the resolution can be improved under the premise of reasonably allocating the refractive index of the fourth lens and the fifth lens. When the second side of the fourth lens is concave, it is conducive to double gluing with the fifth lens, and the aberration can be effectively improved and the resolution can be improved under the premise of reasonably allocating the refractive index of the fourth lens and the fifth lens.

[0104] The optical power of the fifth lens can be positive or negative. When the optical power of the fifth lens is negative, it is conducive to diverging light. When the fifth lens has a positive optical power, it is helpful to reduce the diameter of the rear port and achieve miniaturization.

[0105] The sixth lens has negative optical power, which is beneficial for the smooth transition of light to the imaging surface and ensures imaging stability.

[0106] The present application adopts six lenses, and by optimizing the optical focal length and surface shape of each lens, the optical lens of the present invention has at least one beneficial effect of high resolution, miniaturization, back focal length, small CRA, low sensitivity and high light throughput. BRIEF DESCRIPTION OF THE DRAWINGS

[0107] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0108] Figure 1 A schematic structural diagram of an optical lens according to Example 1 of the present invention is shown;

[0109] Figure 2 A schematic structural diagram of an optical lens according to Example 2 of the present invention is shown;

[0110] Figure 3 A schematic diagram showing the structure of an optical lens according to Example 3 of the present invention is shown;

[0111] Figure 4 A schematic diagram showing the structure of an optical lens according to Example 4 of the present invention is shown;

[0112] Figure 5 A schematic diagram showing the structure of an optical lens according to Example 5 of the present invention is shown;

[0113] Figure 6 A schematic diagram showing the structure of an optical lens according to Example 6 of the present invention is shown;

[0114] Figure 7 A schematic diagram showing the structure of an optical lens according to Example 7 of the present invention is shown;

[0115] Figure 8 A schematic diagram showing the structure of an optical lens according to Example 8 of the present invention is shown;

[0116] Figure 9 A schematic diagram showing the structure of an optical lens according to Example 9 of the present invention is shown;

[0117] Figure 10 A schematic diagram showing the structure of an optical lens according to Example 10 of the present invention is shown;

[0118] Figure 11 A schematic diagram showing the structure of an optical lens according to Example 11 of the present invention is shown;

[0119] Figure 12 A schematic structural diagram of an optical lens according to Example 12 of the present invention is shown.

[0120] The above drawings include the following reference numerals:

[0121] 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; 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; S9, first side surface of the fifth lens; S10, second side surface of the fifth lens; L6, sixth lens; S11, first side surface of the sixth lens; S12, second side surface of the sixth lens; S13, first side surface of the color filter; S14, second side surface of the color filter; S15, first side surface of the protective glass; S16, second side surface of the protective glass; IMA, imaging surface. DETAILED DESCRIPTION

[0122] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0123] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0124] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0125] It should be noted that in this specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the features. Therefore, without departing from the teaching of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0126] In the 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 shown by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to the shapes of the spherical or aspherical surfaces shown in the drawings. The drawings are for illustration only and are not drawn strictly to scale.

[0127] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the position of the convex surface 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 position of the concave surface is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens close to the first side is called the first side of the lens, and the surface of each lens close to the second side is called the second side of the lens. The judgment of the surface shape in the paraxial region can be based on the judgment method of the general knowledgeable person in this field, and the positive and negative R value (R refers to the radius of curvature of the paraxial region, usually refers to the R value on the lens database (lens data) in the optical software) is used to judge the concave and convex. For the first side, when the R value is positive, it is judged as a convex surface, and when the R value is negative, it is judged as a concave surface; for the second side, when the R value is positive, it is judged as a concave surface, and when the R value is negative, it is judged as a convex surface.

[0128] 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.

[0129] In an exemplary embodiment, the optical lens provided by the present application can be used as a vehicle-mounted lens. For the vehicle-mounted lens, the left side is the object side and the right side is the image side; the first side is the object side and the second side is the image side. Light from the object side can be imaged on the image side.

[0130] When the optical lens of the present application is applied to a projection lens or a radar transmitting lens, the left side is the imaging side and the right side is the image source side. In an exemplary embodiment, the optical lens provided by the present application can be used as, for example, a projection lens or a laser radar transmitting end lens. In this case, the image side of the optical lens can be the image source side, and the object side can be the imaging side. Light from the image source side can be imaged on the imaging side, and the imaging surface of the optical lens is the image source surface.

[0131] In order to solve the problem that the optical lens in the prior art is difficult to achieve high resolution, miniaturization, back focal length, small CRA, low sensitivity and high light throughput at the same time, the present invention provides an optical lens and an electronic device.

[0132] Embodiment 1

[0133] like Figures 1 to 12 As shown, the optical lens includes, from the first side to the second side, a first lens with positive optical power, a second lens with negative optical power, a third lens with positive optical power, a fourth lens with optical power and a fifth lens with optical power; the first side surface of the first lens is convex; the first side surface of the second lens is concave, and the second side surface is concave; the second side surface of the third lens is convex; the first side surface of the fourth lens is convex; and the sixth lens with negative optical power.

[0134] The first lens has positive focal length, and the first side of the first lens is convex, which can make the incident angle of light smaller, and the corresponding image height becomes smaller under the same field of view, which is helpful to receive light at a larger angle and increase the luminous flux; the second side of the first lens can be concave or convex. When the second side of the first lens is concave, it can smooth the light trend, improve the resolution, and reduce the system sensitivity. When the second side of the first lens is convex, it can further compress the light, reduce the aperture of the subsequent lens, and achieve miniaturization.

[0135] The second lens has negative optical power, and the first side surface of the second lens is concave, which effectively smoothes the trend of the front light, diverges the light, reduces the system sensitivity, and is beneficial to the subsequent increase of the image plane and the correction of aberrations; the second side surface is concave, which further diverges the light. Under the same field of view angle, the subsequent optical system can have a larger light receiving surface, expand the image plane, and at the same time realize the increase of the physical aperture of the aperture, the increase of the aperture, the realization of a larger amount of light input, and the increase of the image plane brightness.

[0136] The third lens has positive focal power, and the first side surface of the third lens can be convex or concave. When the first side surface of the third lens is convex, it can effectively converge light, smooth the trend of light, reduce system sensitivity, and reduce the rear port diameter at the same time, which is conducive to miniaturization; when the first side surface of the third lens is concave, the subsequent optical system can have a larger light receiving surface, which is conducive to balancing aberrations and improving resolution; the second side surface of the third lens is convex, and has a significant difference in shape from the first side surface of the fourth lens, which further changes the trend of light, compresses the subsequent diameter, and helps to achieve miniaturization.

[0137] The fourth lens has positive power or negative power, and the first side of the fourth lens is convex, which effectively changes the light trend, converges the light, and compresses the back port diameter; the second side of the fourth lens is convex or concave. When the second side of the fourth lens is convex, it is conducive to double gluing with the fifth lens, and the aberration can be effectively improved and the resolution can be improved under the premise of reasonably allocating the refractive index of the fourth lens and the fifth lens. When the second side of the fourth lens is concave, it is conducive to double gluing with the fifth lens, and the aberration can be effectively improved and the resolution can be improved under the premise of reasonably allocating the refractive index of the fourth lens and the fifth lens.

[0138] The optical power of the fifth lens can be positive or negative. When the optical power of the fifth lens is negative, it is conducive to diverging light. When the fifth lens has a positive optical power, it is helpful to reduce the diameter of the rear port and achieve miniaturization.

[0139] The sixth lens has negative optical power, which is beneficial for the smooth transition of light to the imaging surface and ensures imaging stability.

[0140] The present application adopts six lenses, and by optimizing the optical focal length and surface shape of each lens, the optical lens of the present invention has at least one beneficial effect of high resolution, miniaturization, back focal length, small CRA, low sensitivity and high light throughput.

[0141] In this embodiment, the second side surface of the first lens is a concave surface, which smoothes the light trend, improves the resolution, and reduces the system sensitivity.

[0142] In this embodiment, the second side surface of the first lens is a convex surface, which can further compress the light, reduce the aperture of subsequent lenses, and achieve miniaturization.

[0143] In this embodiment, the first side surface of the third lens is a convex surface, which can effectively converge light, smooth the trend of light, reduce system sensitivity, and reduce the diameter of the rear port, which is conducive to miniaturization.

[0144] In this embodiment, the first side surface of the third lens is a concave surface. When the first side surface of the third lens is a concave surface, the subsequent optical system can have a larger light receiving surface, which is beneficial to balance aberrations and improve resolution.

[0145] In this embodiment, the fourth lens has positive focal power, and the second side surface of the fourth lens is convex. The convex second side surface of the fourth lens is conducive to the double bonding with the fifth lens, and can effectively improve aberration and image resolution under the premise of reasonably allocating the refractive index of the fourth lens and the fifth lens.

[0146] In this embodiment, the fourth lens has a negative optical power, and the second side surface of the fourth lens is a concave surface. The second side surface of the fourth lens is a concave surface, which is conducive to the combination with the fifth lens to achieve double bonding, and can effectively improve aberration and image resolution under the premise of reasonably allocating the refractive index of the fourth lens and the fifth lens.

[0147] In this embodiment, the fifth lens has negative optical power, and the first side surface of the fifth lens is concave, and the second side surface is convex. The second side surface of the fifth lens is convex, which helps to reduce the diameter of the rear port and achieve miniaturization. At the same time, the curvature radius ratio with the first side surface of the sixth lens is large, which effectively reduces the system sensitivity while ensuring high resolution and reduces the ghost image at this location.

[0148] In this embodiment, the fifth lens has negative optical power, and the first side surface of the fifth lens is concave, and the second side surface is concave. The second side surface of the fifth lens is concave, which helps to increase the back focal length and reduce the CRA. At the same time, the curvature radius ratio with the first side surface of the sixth lens is large, which effectively reduces the system sensitivity and reduces the ghost image at this location while ensuring high resolution.

[0149] In this embodiment, the fifth lens has positive focal power, and the first side surface of the fifth lens is convex, and the second side surface is concave. The first side surface of the fifth lens is convex, and it is combined with the fourth lens to achieve double bonding. Under the premise of reasonably allocating the refractive index of the fourth lens and the fifth lens, it can effectively improve the aberration and improve the resolution; the fifth lens has positive focal power, which helps to reduce the diameter of the rear port and achieve miniaturization.

[0150] In this embodiment, the first side surface of the sixth lens is a concave surface, and the second side surface is a convex surface. The first side surface of the sixth lens is a concave surface, which makes the front light diverge, which is beneficial to increase the back focus and facilitate the assembly of the module; at the same time, it expands the image surface and reduces the CRA; the second side surface is a convex surface, which helps to reduce the back port diameter and achieve miniaturization.

[0151] In this embodiment, the first side surface of the sixth lens is concave, and the second side surface is concave. The second side surface of the sixth lens is concave, which is beneficial to increase the back focus and facilitate the assembly of the module; at the same time, the image plane is expanded and the CRA is reduced.

[0152] In this embodiment, the first side surface of the sixth lens is a convex surface, and the second side surface is a concave surface. The first side surface of the sixth lens is a convex surface, which helps to balance the aberration and reduce the back port diameter to achieve miniaturization.

[0153] In this embodiment, the fourth lens is glued to the fifth lens to form a double glued lens. The fourth lens and the fifth lens are glued to each other so that the light passing through the third lens can be smoothly transitioned to the imaging surface, thereby reducing the total length. Various aberrations of the optical system are fully corrected, and the resolution can be improved, and the optical performance such as distortion and CRA can be optimized under the premise of a compact structure. By setting up a double glued lens, the air gap between the two lenses can be reduced, and the total length of the system can be reduced; at the same time, the number of assembly components between the fourth lens and the fifth lens can be reduced, the number of processes can be reduced, and the cost can be reduced; at the same time, the tolerance sensitivity of the lens unit due to tilt / eccentricity generated during the assembly process can be reduced; the light loss caused by reflection between lenses can also be reduced, and the illumination can be improved; further, the field curvature can be reduced and the off-axis point aberration of the system can be corrected.

[0154] In this embodiment, the optical lens further includes an aperture, which is disposed between the second lens and the third lens. By disposing the aperture between the second lens and the third lens, it is beneficial to effectively converge the light entering the optical system, reduce the lens diameter at the rear end of the optical system, and reduce the assembly sensitivity of the system.

[0155] In this embodiment, the total optical length of the optical lens, that is, the center distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens, and the whole group focal length value F of the optical lens satisfy: TTL / F≤4. By controlling the total optical length of the optical lens and the whole group focal length value within this range, the system can be miniaturized. Preferably, TTL / F≤3.

[0156] In this embodiment, the focal length value F of the entire optical lens, the arc value θ of the maximum field angle of the optical lens, and the maximum aperture D of the first side surface of the first lens satisfy: (F*θ) / D≥0.2. The front aperture of the optical lens can be made smaller, and the imaging system volume of the optical lens can be reduced. Preferably, (F*θ) / D≥0.4.

[0157] In this embodiment, the maximum aperture D of the first side surface of the first 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≤0.08. This conditional expression is satisfied to ensure that the front port diameter is small, and miniaturization can be achieved. Preferably, D / H / FOV≤0.05.

[0158] In this embodiment, the maximum aperture D of the first side surface of the first lens, the image height H corresponding to the maximum field angle of the optical lens, and the focal length F of the entire optical lens group satisfy: D / H / F≤0.2. When this condition is satisfied, the optical lens can be provided with the characteristics of a large target surface and a small aperture under the condition of a fixed focal length. Preferably, D / H / F≤0.1.

[0159] In this embodiment, the focal length value F of the optical lens and the arc value θ of the maximum field angle of the optical lens satisfy: F / θ≤30. The appropriate ratio design of focal length to field angle achieves small CRA, long back focus, and high resolution while ensuring low sensitivity of the system. Preferably, 25≤F / θ≤29.5.

[0160] In this embodiment, the image height H corresponding to the maximum field angle of the optical lens, the focal length value F of the entire optical lens, and the arc value θ of the maximum field angle of the optical lens satisfy: |(HF*θ) / (F*θ)|≤0.06. This conditional expression is satisfied to ensure that the focal length of the optical lens is increased while the field angle of the optical lens and the size of the imaging surface remain unchanged, and to highlight the imaging effect of the central area of ​​the imaging surface of the optical lens. Preferably, |(HF*θ) / (F*θ)|≤0.04.

[0161] In this embodiment, the entire focal length value F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy: F / ENPD≤3. Satisfying this conditional expression is conducive to ensuring a small FNO and increasing the amount of light passing. Preferably, F / ENPD≤2.5.

[0162] In this embodiment, the image height H corresponding to the maximum field angle of the optical lens, the focal length value F of the entire optical lens, and the arc value θ of the maximum field angle of the optical lens satisfy: 0.4≤(H / 2) / (F*tan(θ / 2))≤2. This condition reflects the ratio of the actual image height to the ideal image height, and can achieve a large angular resolution. Preferably, 0.8≤(H / 2) / (F*tan(θ / 2))≤1.5.

[0163] In this embodiment, the curvature radius R4 of the second side surface of the second lens and the curvature radius R5 of the first side surface of the third lens satisfy: |R4 / R5|≤20. The curvatures of the adjacent lenses of the second lens and the third lens are similar, which can correct the aberration of the optical system and ensure that the light passing through the first lens is smooth, thereby reducing the tolerance sensitivity of the optical system. Preferably, |R4 / R5|≤10.

[0164] In this embodiment, the curvature radius R10 of the second side surface of the fifth lens and the curvature radius R11 of the first side surface of the sixth lens satisfy: |R10 / R11|≥4.3. This conditional expression is satisfied, so that the curvature radius ratio of adjacent surfaces is large, which effectively reduces the system sensitivity while ensuring high resolution, and is conducive to concentrating the energy of the ghost image away from the imaging surface, effectively reducing the ghost image at that location. Preferably, |R10 / R11|≥4.45.

[0165] In this embodiment, the focal length F6 of the sixth lens and the focal length F of the entire optical lens group satisfy: F6 / F ≥ -7. The sixth lens has a negative optical focal length, and the ratio of the focal length of the sixth lens to the focal length of the entire optical lens group is controlled, which can smoothly transition the light to the imaging surface while increasing the back focus, which is beneficial to the overall assembly. Preferably, -5 ≤ F6 / F ≤ -0.2.

[0166] In this embodiment, the focal length F2 of the second lens and the focal length F3 of the third lens satisfy: -5≤F2 / F3≤-0.02. Controlling the focal lengths of the second lens and the third lens, two adjacent lenses, to have opposite signs and similar values ​​helps to smoothly transition the light and balance the aberration. Preferably, -3≤F2 / F3≤-0.05.

[0167] In this embodiment, the focal length value F of the entire optical lens, the curvature radius R3 of the first side surface of the second lens, and the curvature radius R4 of the second side surface of the second lens satisfy: |F / R3|+|F / R4|≤8. Satisfying this conditional expression is conducive to controlling the surface curvature of the second lens, properly diverging light, so that the subsequent optical system has a larger light receiving surface, which is conducive to balancing aberrations and increasing the amount of light entering. Preferably, |F / R3|+|F / R4|≤6.

[0168] In this embodiment, the air spacing d7 between the third lens and the fourth lens and the optical back focus 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 surface, satisfy: (d7*BFL) / (d7+BFL)≤1. Satisfying this conditional expression helps to balance the ratio of the optical back focus to the spacing between the third lens and the fourth lens, which can increase the assembly yield, and at the same time helps to make the optical system have enough back focus to place other optical elements, so as to increase the design flexibility. Preferably, (d7*BFL) / (d7+BFL)≤0.5.

[0169] In this embodiment, the curvature radius R6 of the second side surface of the third lens satisfies the entire focal length F of the optical lens set: |R6 / F|≤10. Controlling the curvature radius of the second side surface of the third lens is conducive to the smooth transition of light to the rear, reducing aberrations and improving resolution. Preferably, |R6 / F|≤6.

[0170] In this embodiment, the curvature radius R7 of the first side surface of the fourth lens satisfies the following relationship with the focal length F of the entire optical lens set: R7 / F≤7. The curvature radius of the first side surface of the fourth lens is controlled to converge the light, depress the position of the incident light to the subsequent optical system, and reduce the diameter of the rear port. Preferably, R7 / F≤5.

[0171] In this embodiment, the curvature radius R10 of the second side surface of the fifth lens satisfies the following relationship with the focal length F of the entire optical lens set: |R10 / F|≥1.2. By controlling the curvature radius of the second side surface of the fifth lens to be larger, the light transition is smoother, the system sensitivity is effectively reduced, and the ghost image at this location is reduced. Preferably, |R10 / F|≥1.5.

[0172] In this embodiment, the curvature radius R11 of the first side surface of the sixth lens satisfies the entire focal length F of the optical lens set: |R11 / F|≤5. Satisfying this conditional expression is conducive to increasing the back focus and facilitating the assembly of the module; at the same time, the image plane is expanded and the CRA is reduced. Preferably, |R11 / F|≤3.

[0173] In this embodiment, the curvature radius R10 of the second side surface of the fifth lens and the total optical length of the optical lens, that is, the center distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens, satisfy: |R10 / TTL|≥0.8. When this condition is met, the system sensitivity is reduced while miniaturization is achieved. Preferably, |R10 / TTL|≥0.85.

[0174] In this embodiment, the center thickness d6 of the third lens and the total optical length of the optical lens, that is, the center distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens, satisfy: d6 / TTL≥0.02. The center thickness of the third lens is relatively large, which is beneficial to the processability of the lens, and when used with the second lens with a negative focal length, it can make the light trend stable. Preferably, d6 / TTL≥0.04.

[0175] In this embodiment, the total optical length of the optical lens, that is, the center distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens, and the center thickness d11 of the sixth lens satisfy: TTL / d11≥6. When this condition is met, the center thickness of the sixth lens and the total optical length are reasonably matched, so that a small CRA can be achieved while miniaturization. Preferably, TTL / d11≥9.

[0176] In this embodiment, the center thickness d8 of the fourth lens, the center thickness d9 of the fifth lens and the total optical length of the optical lens, that is, the center distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens, satisfy: (d8+d9) / TTL≥0.05. The center thickness of the double cemented lens of the fourth lens and the fifth lens is relatively large, which is beneficial to the processability of the lens and makes the light trend stable. Preferably, (d8+d9) / TTL≥0.1.

[0177] In this embodiment, the distance d26 between the first lens and the third lens, the center thickness d6 of the third lens and the total optical length of the optical lens, that is, the center distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens, satisfy: |(d26-d6) / TTL|≤0.15. The difference between the distance between the first lens and the third lens and the center thickness of the third lens is designed to be smaller than the total length, which can effectively reduce the sensitivity of the system and reduce the ghost images reflected by the surfaces at that location. Preferably, |(d26-d6) / TTL|≤0.05. More preferably, |(d26-d6) / TTL|≤0.01.

[0178] In this embodiment, the center thickness d3 of the second lens and the center thickness d6 of the third lens satisfy: 0.2≤d3 / d6. Reasonable control of the ratio of the center thickness of the second lens to the center thickness of the third lens can effectively reduce system sensitivity and improve assembly yield. Preferably, 0.3≤d3 / d6≤1.8. More preferably, 0.38≤|d3 / d6|≤1.2.

[0179] In this embodiment, the distance d26 between the first lens and the third lens, the center thickness d6 of the third lens and the radius of curvature R5 of the first side surface of the third lens satisfy: |(d26-d6) / R5|≤0.4. The difference between the distance between the first lens and the third lens and the center thickness of the third lens is designed to be smaller than the radius of curvature of the first side surface of the third lens, which can effectively reduce the sensitivity of the system and reduce the ghost images reflected by the surfaces there. Preferably, |(d26-d6) / R5|≤0.05. More preferably, (d26-d6) / R5|≤0.03.

[0180] In this embodiment, the maximum aperture D of the first side surface of the first lens and the radius of curvature R1 of the first side surface of the first lens satisfy: D / R1≥0.05. By controlling the maximum aperture D of the first side surface of the first lens and the radius of curvature of the first side surface, a small front end aperture and a high light throughput can be achieved simultaneously. Preferably, D / R1≥0.2.

[0181] In this embodiment, the maximum effective aperture D7 of the first side surface of the fourth lens corresponding to the maximum field angle of the optical lens, the radius of curvature R7 of the first side surface of the fourth lens, and the sag SAG7 of the first side surface of the fourth lens satisfy the following conditions: arctan(D7 / (R7-SAG7))≥0.2. Reasonable control of the opening angle of the first side surface of the fourth lens helps to reduce ghost images. Preferably, arctan(D7 / (R7-SAG7))≥0.4.

[0182] In this embodiment, the radius of curvature R10 of the second side surface of the fifth lens, the center thickness d8 of the fourth lens, and the center thickness d9 of the fifth lens satisfy: |R10 / (d8+d9)|≥2.5. Reasonable control of the ratio of the radius of curvature of the second side surface of the double-cemented lens to the center thickness of the double-cemented lens can effectively reduce the ghost image produced by the double-cemented lens, while making the light trend there smooth and reducing the system sensitivity. Preferably, |R10 / (d8+d9)|≥2.95. More preferably, |R10 / (d8+d9)|≥3.2.

[0183] In this embodiment, the radius of curvature R10 of the second side surface of the fifth lens and the center thickness d9 of the fifth lens satisfy: |R10 / d9|≥5.2. Reasonable control of the radius of curvature of the second side surface of the fifth lens and the center thickness of the fifth lens can make the light emitted from the double cemented lens smoother, effectively reduce CRA, and reduce system sensitivity. Preferably, |R10 / d9|≥5.3. More preferably, |R10 / d9|≥6.

[0184] In this embodiment, the radius of curvature R12 of the second side surface of the sixth lens and the center thickness d11 of the sixth lens satisfy: |R12 / d11|≤55. The ratio of the radius of curvature of the second side surface of the last lens to the center thickness is controlled not to be too large, so as to ensure that the corresponding ghost image can be reduced under a small CRA and improve the processability of the lens. Preferably, |R12 / d11|≤22. More preferably, |R12 / d11|≤18.5.

[0185] In this embodiment, the curvature radius R11 of the first side surface of the sixth lens and the curvature radius R12 of the second side surface of the sixth lens satisfy: |R11 / R12|≥0.1. The ratio of the curvature radius of the first side surface to the second side surface of the last lens is controlled not to be too small, so as to ensure a small CRA while reducing the ghost image there. Preferably, |R11 / R12|≥0.25. More preferably, |R11 / R12|≥0.32.

[0186] Embodiment 2

[0187] like Figures 1 to 12 As shown, the optical lens includes, from the first side to the second side, a first lens with positive optical power; a second lens with negative optical power; a third lens with positive optical power; a fourth lens with optical power; a fifth lens with optical power; a sixth lens with negative optical power; the curvature radius R10 of the second side surface of the fifth lens and the curvature radius R11 of the first side surface of the sixth lens satisfy: |R10 / R11|≥4.3. Meeting this conditional expression makes the curvature radius ratio of adjacent surfaces larger, while ensuring high resolution, effectively reducing the system sensitivity, which is conducive to moving the energy concentration of ghost images away from the imaging surface, effectively reducing the ghost images at that location. Preferably, |R10 / R11|≥4.45.

[0188] In this embodiment, the first side surface of the first lens is convex, which can make the incident angle of light smaller and the corresponding image height smaller under the same field of view, which is helpful to receive light at a larger angle and increase the luminous flux; the second side surface is concave, which smoothes the trend of light, improves resolution, and reduces system sensitivity.

[0189] In this embodiment, the first side surface of the first lens is a convex surface, which can make the incident angle of light smaller and the corresponding image height smaller under the same field of view, which is helpful to receive light at a larger angle and increase the luminous flux; the second side surface of the first lens is a convex surface, which can further compress the light, reduce the aperture of the subsequent lens, and achieve miniaturization.

[0190] In this embodiment, the first side surface of the second lens is a concave surface, which effectively smoothes the trend of the front light, diverges the light, reduces the system sensitivity, and is beneficial to the subsequent increase of the image plane and the correction of aberrations; the second side surface is a concave surface, which further diverges the light. Under the same field of view angle, the subsequent optical system can have a larger light receiving surface, expand the image plane, and at the same time realize the increase of the physical aperture of the aperture, the aperture becomes larger, a larger amount of light is achieved, and the brightness of the image plane is increased.

[0191] In this embodiment, the first side surface of the third lens is a convex surface, which can effectively converge the light, smooth the light trend, reduce the system sensitivity, and reduce the rear port diameter, which is conducive to miniaturization; the second side surface is a convex surface, which is significantly different in shape from the first side surface of the fourth lens, further changing the light trend, compressing the subsequent diameter, and helping to achieve miniaturization.

[0192] In this embodiment, the first side surface of the third lens is concave, which can enable the subsequent optical system to have a larger light receiving surface, which is beneficial to balancing aberrations and improving resolution; the second side surface is convex, which is significantly different in shape from the first side surface of the fourth lens, further changing the light trend, compressing the subsequent aperture, and helping to achieve miniaturization.

[0193] In this embodiment, the fourth lens has positive focal power, and the first side surface of the fourth lens is convex, which effectively changes the trend of light, converges light, and compresses the rear port diameter; the second side surface is convex, which is conducive to achieving double bonding with the fifth lens, and can effectively improve aberrations and improve resolution under the premise of reasonably distributing the refractive indices of the fourth lens and the fifth lens.

[0194] In this embodiment, the fourth lens has negative optical power, and the first side surface of the fourth lens is convex, which effectively changes the trend of light, converges light, and compresses the rear port diameter; the second side surface is concave, which is conducive to achieving double bonding with the fifth lens, and can effectively improve aberrations and improve resolution under the premise of reasonably distributing the refractive indices of the fourth lens and the fifth lens.

[0195] In this embodiment, the fifth lens has negative optical power, and the first side surface of the fifth lens is concave, and the second side surface is convex. The second side surface of the fifth lens is convex, which helps to reduce the diameter of the rear port and achieve miniaturization. At the same time, the curvature radius ratio with the first side surface of the sixth lens is large, which effectively reduces the system sensitivity while ensuring high resolution and reduces the ghost image at this location.

[0196] In this embodiment, the fifth lens has negative optical power, and the first side surface of the fifth lens is concave, and the second side surface is concave. The second side surface of the fifth lens is concave, which helps to increase the back focal length and reduce the CRA. At the same time, the curvature radius ratio with the first side surface of the sixth lens is large, which effectively reduces the system sensitivity and reduces the ghost image at this location while ensuring high resolution.

[0197] In this embodiment, the fifth lens has positive focal power, and the first side surface of the fifth lens is convex, and the second side surface is concave. The first side surface of the fifth lens is convex, and it is combined with the fourth lens to achieve double bonding. Under the premise of reasonably allocating the refractive index of the fourth lens and the fifth lens, it can effectively improve the aberration and improve the resolution; the fifth lens has positive focal power, which helps to reduce the diameter of the rear port and achieve miniaturization.

[0198] In this embodiment, the first side surface of the sixth lens is a concave surface, and the second side surface is a convex surface. The first side surface of the sixth lens is a concave surface, which makes the front light diverge, which is beneficial to increase the back focus and facilitate the assembly of the module; at the same time, it expands the image surface and reduces the CRA; the second side surface is a convex surface, which helps to reduce the back port diameter and achieve miniaturization.

[0199] In this embodiment, the first side surface of the sixth lens is concave, and the second side surface is concave. The second side surface of the sixth lens is concave, which is beneficial to increase the back focus and facilitate the assembly of the module; at the same time, the image plane is expanded and the CRA is reduced.

[0200] In this embodiment, the first side surface of the sixth lens is a convex surface, and the second side surface is a concave surface. The first side surface of the sixth lens is a convex surface, which helps to balance the aberration and reduce the back port diameter to achieve miniaturization.

[0201] In this embodiment, the fourth lens is glued to the fifth lens to form a double glued lens. The fourth lens and the fifth lens are glued to each other so that the light passing through the third lens can be smoothly transitioned to the imaging surface, thereby reducing the total length. Various aberrations of the optical system are fully corrected, and the resolution can be improved, and the optical performance such as distortion and CRA can be optimized under the premise of a compact structure. By setting up a double glued lens, the air gap between the two lenses can be reduced, and the total length of the system can be reduced; at the same time, the number of assembly components between the fourth lens and the fifth lens can be reduced, the number of processes can be reduced, and the cost can be reduced; at the same time, the tolerance sensitivity of the lens unit due to tilt / eccentricity generated during the assembly process can be reduced; the light loss caused by reflection between lenses can also be reduced, and the illumination can be improved; further, the field curvature can be reduced and the off-axis point aberration of the system can be corrected.

[0202] In this embodiment, the optical lens further includes an aperture, which is disposed between the second lens and the third lens. By disposing the aperture between the second lens and the third lens, it is beneficial to effectively converge the light entering the optical system, reduce the lens diameter at the rear end of the optical system, and reduce the assembly sensitivity of the system.

[0203] In this embodiment, the total optical length of the optical lens, that is, the center distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens, and the whole group focal length value F of the optical lens satisfy: TTL / F≤4. By controlling the total optical length of the optical lens and the whole group focal length value within this range, the system can be miniaturized. Preferably, TTL / F≤3.

[0204] In this embodiment, the focal length value F of the entire optical lens, the arc value θ of the maximum field angle of the optical lens, and the maximum aperture D of the first side surface of the first lens satisfy: (F*θ) / D≥0.2. The front aperture of the optical lens can be made smaller, and the imaging system volume of the optical lens can be reduced. Preferably, (F*θ) / D≥0.4.

[0205] In this embodiment, the maximum aperture D of the first side surface of the first 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≤0.08. This conditional expression is satisfied to ensure that the front port diameter is small, and miniaturization can be achieved. Preferably, D / H / FOV≤0.05.

[0206] In this embodiment, the maximum aperture D of the first side surface of the first lens, the image height H corresponding to the maximum field angle of the optical lens, and the focal length F of the entire optical lens group satisfy: D / H / F≤0.2. When this condition is satisfied, the optical lens can be provided with the characteristics of a large target surface and a small aperture under the condition of a fixed focal length. Preferably, D / H / F≤0.1.

[0207] In this embodiment, the focal length value F of the optical lens and the arc value θ of the maximum field angle of the optical lens satisfy: F / θ≤30. The appropriate ratio design of focal length to field angle achieves small CRA, long back focus, and high resolution while ensuring low sensitivity of the system. Preferably, 25≤F / θ≤29.5.

[0208] In this embodiment, the image height H corresponding to the maximum field angle of the optical lens, the focal length value F of the entire optical lens, and the arc value θ of the maximum field angle of the optical lens satisfy: |(HF*θ) / (F*θ)|≤0.06. This conditional expression is satisfied to ensure that the focal length of the optical lens is increased while the field angle of the optical lens and the size of the imaging surface remain unchanged, and to highlight the imaging effect of the central area of ​​the imaging surface of the optical lens. Preferably, |(HF*θ) / (F*θ)|≤0.04.

[0209] In this embodiment, the entire focal length value F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy: F / ENPD≤3. Satisfying this conditional expression is conducive to ensuring a small FNO and increasing the amount of light passing. Preferably, F / ENPD≤2.5.

[0210] In this embodiment, the image height H corresponding to the maximum field angle of the optical lens, the focal length value F of the entire optical lens, and the arc value θ of the maximum field angle of the optical lens satisfy: 0.4≤(H / 2) / (F*tan(θ / 2))≤2. This condition reflects the ratio of the actual image height to the ideal image height, and can achieve a large angular resolution. Preferably, 0.8≤(H / 2) / (F*tan(θ / 2))≤1.5.

[0211] In this embodiment, the curvature radius R4 of the second side surface of the second lens and the curvature radius R5 of the first side surface of the third lens satisfy: |R4 / R5|≤20. The curvatures of the adjacent lenses of the second lens and the third lens are similar, which can correct the aberration of the optical system and ensure that the light passing through the first lens is smooth, thereby reducing the tolerance sensitivity of the optical system. Preferably, |R4 / R5|≤10.

[0212] In this embodiment, the focal length F6 of the sixth lens and the focal length F of the entire optical lens group satisfy: F6 / F ≥ -7. The sixth lens has a negative optical focal length, and the ratio of the focal length of the sixth lens to the focal length of the entire optical lens group is controlled, which can smoothly transition the light to the imaging surface while increasing the back focus, which is beneficial to the overall assembly. Preferably, -5 ≤ F6 / F ≤ -0.2.

[0213] In this embodiment, the focal length F2 of the second lens and the focal length F3 of the third lens satisfy: -5≤F2 / F3≤-0.02. The focal lengths of the second lens and the third lens, two adjacent lenses, have opposite signs and similar values, which helps to smoothly transition the light and balance the aberration. Preferably, -3≤F2 / F3≤-0.05.

[0214] In this embodiment, the focal length value F of the entire optical lens, the curvature radius R3 of the first side surface of the second lens, and the curvature radius R4 of the second side surface of the second lens satisfy: |F / R3|+|F / R4|≤8. Satisfying this conditional expression is conducive to controlling the surface curvature of the second lens, properly diverging light, so that the subsequent optical system has a larger light receiving surface, which is conducive to balancing aberrations and increasing the amount of light entering. Preferably, |F / R3|+|F / R4|≤6.

[0215] In this embodiment, the air spacing d7 between the third lens and the fourth lens and the optical back focus 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 surface, satisfy: (d7*BFL) / (d7+BFL)≤1. Satisfying this conditional expression helps to balance the ratio of the optical back focus to the spacing between the third lens and the fourth lens, which can increase the assembly yield, and at the same time helps to make the optical system have enough back focus to place other optical elements, so as to increase the design flexibility. Preferably, (d7*BFL) / (d7+BFL)≤0.5.

[0216] In this embodiment, the curvature radius R6 of the second side surface of the third lens satisfies the entire focal length F of the optical lens set: |R6 / F|≤10. Controlling the curvature radius of the second side surface of the third lens is conducive to the smooth transition of light to the rear, reducing aberrations and improving resolution. Preferably, |R6 / F|≤6.

[0217] In this embodiment, the curvature radius R7 of the first side surface of the fourth lens satisfies the following relationship with the focal length F of the entire optical lens set: R7 / F≤7. The curvature radius of the first side surface of the fourth lens is controlled to converge the light, depress the position of the incident light to the subsequent optical system, and reduce the diameter of the rear port. Preferably, R7 / F≤5.

[0218] In this embodiment, the curvature radius R10 of the second side surface of the fifth lens satisfies the following relationship with the focal length F of the entire optical lens set: |R10 / F|≥1.2. By controlling the curvature radius of the second side surface of the fifth lens to be larger, the light transition is smoother, the system sensitivity is effectively reduced, and the ghost image at this location is reduced. Preferably, |R10 / F|≥1.5.

[0219] In this embodiment, the curvature radius R11 of the first side surface of the sixth lens satisfies the entire focal length F of the optical lens set: |R11 / F|≤5. Satisfying this conditional expression is conducive to increasing the back focus and facilitating the assembly of the module; at the same time, the image plane is expanded and the CRA is reduced. Preferably, |R11 / F|≤3.

[0220] In this embodiment, the curvature radius R10 of the second side surface of the fifth lens and the total optical length of the optical lens, that is, the center distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens, satisfy: |R10 / TTL|≥0.8. When this condition is met, the system sensitivity is reduced while miniaturization is achieved. Preferably, |R10 / TTL|≥0.85.

[0221] In this embodiment, the center thickness d6 of the third lens and the total optical length of the optical lens, that is, the center distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens, satisfy: d6 / TTL≥0.02. The center thickness of the third lens is relatively large, which is beneficial to the processability of the lens, and when used with the second lens with a negative focal length, it can make the light trend stable. Preferably, d6 / TTL≥0.04.

[0222] In this embodiment, the total optical length of the optical lens, that is, the center distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens, and the center thickness d11 of the sixth lens satisfy: TTL / d11≥6. When this condition is met, the center thickness of the sixth lens and the total optical length are reasonably matched, so that a small CRA can be achieved while miniaturization. Preferably, TTL / d11≥9.

[0223] In this embodiment, the center thickness d8 of the fourth lens, the center thickness d9 of the fifth lens and the total optical length of the optical lens, that is, the center distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens, satisfy: (d8+d9) / TTL≥0.05. The center thickness of the double cemented lens of the fourth lens and the fifth lens is relatively large, which is beneficial to the processability of the lens and makes the light trend stable. Preferably, (d8+d9) / TTL≥0.1.

[0224] In this embodiment, the distance d26 between the first lens and the third lens, the center thickness d6 of the third lens and the total optical length of the optical lens, that is, the center distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens, satisfy: |(d26-d6) / TTL|≤0.15. The difference between the distance between the first lens and the third lens and the center thickness of the third lens is designed to be smaller than the total length, which can effectively reduce the sensitivity of the system and reduce the ghost images reflected by the various surfaces at that location. Preferably, |(d26-d6) / TTL|≤0.05.

[0225] In this embodiment, the center thickness d3 of the second lens and the center thickness d6 of the third lens satisfy: 0.2≤d3 / d6. Reasonable control of the ratio of the center thickness of the second lens to the center thickness of the third lens can effectively reduce system sensitivity and improve assembly yield. Preferably, 0.3≤d3 / d6≤1.8.

[0226] In this embodiment, the distance d26 between the first lens and the third lens, the center thickness d6 of the third lens and the radius of curvature R5 of the first side surface of the third lens satisfy: |(d26-d6) / R5|≤0.4. The difference between the distance between the first lens and the third lens and the center thickness of the third lens is designed to be smaller than the radius of curvature of the first side surface of the third lens, which can effectively reduce the sensitivity of the system and reduce the ghost images reflected by the various surfaces there. Preferably, |(d26-d6) / R5|≤0.05.

[0227] In this embodiment, the maximum aperture D of the first side surface of the first lens and the radius of curvature R1 of the first side surface of the first lens satisfy: D / R1≥0.05. By controlling the maximum aperture D of the first side surface of the first lens and the radius of curvature of the first side surface, a small front end aperture and a high light throughput can be achieved simultaneously. Preferably, D / R1≥0.2.

[0228] In this embodiment, the maximum effective aperture D7 of the first side surface of the fourth lens corresponding to the maximum field angle of the optical lens, the radius of curvature R7 of the first side surface of the fourth lens, and the sag SAG7 of the first side surface of the fourth lens satisfy the following conditions: arctan(D7 / (R7-SAG7))≥0.2. Reasonable control of the opening angle of the first side surface of the fourth lens helps to reduce ghost images. Preferably, arctan(D7 / (R7-SAG7))≥0.4.

[0229] In this embodiment, the radius of curvature R10 of the second side surface of the fifth lens, the center thickness d8 of the fourth lens, and the center thickness d9 of the fifth lens satisfy: |R10 / (d8+d9)|≥2.5. Reasonable control of the ratio of the radius of curvature of the second side surface of the double-cemented lens to the center thickness of the double-cemented lens can effectively reduce the ghost image produced by the double-cemented lens, while making the light trend there smooth and reducing the system sensitivity. Preferably, |R10 / (d8+d9)|≥2.95. More preferably, |R10 / (d8+d9)|≥3.2.

[0230] In this embodiment, the radius of curvature R10 of the second side surface of the fifth lens and the center thickness d9 of the fifth lens satisfy: |R10 / d9|≥5.2. Reasonable control of the radius of curvature of the second side surface of the fifth lens and the center thickness of the fifth lens can make the light emitted from the double cemented lens smoother, effectively reduce CRA, and reduce system sensitivity. Preferably, |R10 / d9|≥5.3. More preferably, |R10 / d9|≥6.

[0231] In this embodiment, the radius of curvature R12 of the second side surface of the sixth lens and the center thickness d11 of the sixth lens satisfy: |R12 / d11|≤55. The ratio of the radius of curvature of the second side surface of the last lens to the center thickness is controlled not to be too large, so as to ensure that the corresponding ghost image can be reduced under a small CRA and improve the processability of the lens. Preferably, |R12 / d11|≤22. More preferably, |R12 / d11|≤18.5.

[0232] In this embodiment, the curvature radius R11 of the first side surface of the sixth lens and the curvature radius R12 of the second side surface of the sixth lens satisfy: |R11 / R12|≥0.1. The ratio of the curvature radius of the first side surface to the second side surface of the last lens is controlled not to be too small, so as to ensure a small CRA while reducing the ghost image there. Preferably, |R11 / R12|≥0.25. More preferably, |R11 / R12|≥0.32.

[0233] Optionally, the optical lens may further include a color filter for correcting color deviation and a protective glass for protecting a photosensitive element located on the imaging surface.

[0234] The optical lens in the present application may use multiple lenses, such as the six lenses mentioned above. The present application does not specifically limit the specific number of spherical lenses and aspherical lenses. When focusing on imaging quality, the number of aspherical lenses can be increased. The characteristics of aspherical lenses are: the curvature changes continuously from the center of the lens to the periphery of the lens. Unlike spherical lenses with constant curvature from the center of the lens to the periphery of the lens, aspherical lenses have better curvature radius characteristics, and have the advantages of improving distortion aberrations and improving astigmatism aberrations. After using aspherical lenses, the aberrations that occur during imaging can be eliminated as much as possible, thereby improving imaging quality.

[0235] In an exemplary embodiment, the present solution does not limit the plastic and glass of the lens. If the focus is on temperature performance, the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens can all be glass lenses. An optical lens made of glass can suppress the deviation of the back focus of the optical lens with temperature changes to improve the stability of the system. At the same time, the use of glass material can avoid the lens imaging blur caused by high and low temperature changes in the use environment, which affects the normal use of the optical lens. For example, the temperature range of the optical lens with an all-glass design is wider, and stable optical performance can be maintained in the range of -40°C to 105°C. Specifically, when focusing on resolution quality and reliability, the first lens to the sixth lens can all be glass aspherical lenses. Of course, in applications where temperature stability requirements are lower, the first lens to the sixth lens in the optical lens can also be made of plastic. Making optical lenses with plastic can effectively reduce production costs. Of course, the first lens to the sixth lens in the optical lens can also be made of a combination of plastic and glass.

[0236] The present application also provides an electronic device, comprising the above-mentioned optical lens and an imaging element that converts an optical image formed by the optical lens into an electrical signal. The imaging element may be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS). The electronic device may be an independent imaging device such as a digital camera, or an imaging module integrated in a mobile electronic device such as a mobile phone. The electronic device is equipped with the above-described optical lens.

[0237] However, those skilled in the art should understand that, without departing from the technical solution claimed in the present application, the number of lenses constituting the optical lens can be changed to obtain the various results and advantages described in this specification. For example, although six lenses are described as an example in the embodiment, the optical lens is not limited to including six lenses. If necessary, the optical lens may also include other numbers of lenses.

[0238] The following further describes examples of specific surface shapes and parameters of the optical lens applicable to the above-mentioned embodiments with reference to the accompanying drawings.

[0239] It should be noted that any one of the following examples 1 to 12 is applicable to all embodiments of the present application.

[0240] Example 1

[0241] like Figure 1 The figure shows a schematic diagram of the optical lens structure of Example 1.

[0242] like Figure 1 As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a first side surface S13 of the color filter, a second side surface S14 of the color filter, a first side surface S15 of the protective glass, a second side surface S16 of the protective glass, and an imaging surface IMA.

[0243] The first lens L1 has positive power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has negative power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is concave. The third lens L3 has positive power, the first side surface S6 of the third lens is concave, and the second side surface S7 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S8 of the fourth lens is convex, and the second side surface S9 of the fourth lens is convex. The fifth lens L5 has negative power, the first side surface S9 of the fifth lens is concave, and the second side surface S10 of the fifth lens is convex. The sixth lens L6 has negative power, the first side surface S11 of the sixth lens is concave, and the second side surface S12 of the sixth lens is convex. The light from the first side passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface IMA. Since the fourth lens L4 and the fifth lens L5 are cemented to form a doublet lens, the second side surface S9 of the fourth lens and the first side surface S9 of the fifth lens are the same surface.

[0244] In this example, the total effective focal length F of the optical lens is 16.429 mm, the maximum field of view FOV of the optical lens is 32.080°, and the total length TTL of the optical lens is 31.677 mm.

[0245] Table 1 shows a basic structural parameter table of the optical lens of Example 1, wherein the units of the radius of curvature and the thickness / distance are both millimeters (mm).

[0246] Surf Radius Thickness Nd Vd 1 16.520 2.540 1.83 42.73 2 67.090 0.920 3 -19.246 2.426 1.75 34.99 4 19.246 1.432 STO Infinity 0.194 6 -109.500 5.060 1.69 54.54 7 -16.750 0.100 8 9.660 4.140 1.62 63.39 9 -11.750 4.330 1.75 34.99 10 -29.810 5.250 11 -6.400 1.085 1.73 28.32 12 -17.790 1.300 13 Infinity 0.500 1.52 64.20 14 Infinity 1.775 15 Infinity 0.500 1.52 64.20 16 Infinity 0.125 IMA / /

[0247] Table 1

[0248] Example 2

[0249] like Figure 2, which is a schematic diagram of the optical lens structure of Example 2.

[0250] like Figure 2 As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a first side surface S13 of the color filter, a second side surface S14 of the color filter, a first side surface S15 of the protective glass, a second side surface S16 of the protective glass, and an imaging surface IMA.

[0251] The first lens L1 has positive power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has negative power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is concave. The third lens L3 has positive power, the first side surface S6 of the third lens is concave, and the second side surface S7 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S8 of the fourth lens is convex, and the second side surface S9 of the fourth lens is convex. The fifth lens L5 has negative power, the first side surface S9 of the fifth lens is concave, and the second side surface S10 of the fifth lens is convex. The sixth lens L6 has negative power, the first side surface S11 of the sixth lens is concave, and the second side surface S12 of the sixth lens is convex. The light from the first side passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface IMA. Since the fourth lens L4 and the fifth lens L5 are cemented to form a doublet lens, the second side surface S9 of the fourth lens and the first side surface S9 of the fifth lens are the same surface.

[0252] In this example, the total effective focal length F of the optical lens is 15.906 mm, the maximum field of view FOV of the optical lens is 32.080°, and the total length TTL of the optical lens is 28.947 mm.

[0253] Table 2 shows the basic structural parameters of the optical lens of Example 2, wherein the units of the radius of curvature and the thickness / distance are both millimeters (mm).

[0254] Surf Radius Thickness Nd Vd 1 16.760 3.885 1.83 42.73 2 67.120 0.912 3 -16.459 2.426 1.75 34.99 4 17.625 1.432 STO Infinity 0.194 6 -105.850 2.542 1.69 54.54 7 -14.626 0.100 8 8.483 2.727 1.62 63.39 9 -13.008 4.839 1.75 34.99 10 -25.949 4.606 11 -5.447 1.085 1.73 28.32 12 -12.985 1.300 13 Infinity 0.500 1.52 64.20 14 Infinity 1.775 15 Infinity 0.500 1.52 64.20 16 Infinity 0.125 IMA / /

[0255] Table 2

[0256] Example 3

[0257] like Figure 3 The figure shows a schematic diagram of the optical lens structure of Example 3.

[0258] like Figure 3As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a first side surface S13 of the color filter, a second side surface S14 of the color filter, a first side surface S15 of the protective glass, a second side surface S16 of the protective glass, and an imaging surface IMA.

[0259] The first lens L1 has positive power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has negative power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is concave. The third lens L3 has positive power, the first side surface S6 of the third lens is convex, and the second side surface S7 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S8 of the fourth lens is convex, and the second side surface S9 of the fourth lens is convex. The fifth lens L5 has negative power, the first side surface S9 of the fifth lens is concave, and the second side surface S10 of the fifth lens is convex. The sixth lens L6 has negative power, the first side surface S11 of the sixth lens is concave, and the second side surface S12 of the sixth lens is convex. The light from the first side passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface IMA. Since the fourth lens L4 and the fifth lens L5 are cemented to form a doublet lens, the second side surface S9 of the fourth lens and the first side surface S9 of the fifth lens are the same surface.

[0260] In this example, the total effective focal length F of the optical lens is 15.907 mm, the maximum field of view FOV of the optical lens is 32.080°, and the total length TTL of the optical lens is 31.595 mm.

[0261] Table 3 shows the basic structural parameter table of the optical lens of Example 3, wherein the units of the radius of curvature and thickness / distance are both millimeters (mm).

[0262] Surf Radius Thickness Nd Vd 1 15.592 3.017 1.83 42.73 2 34.222 1.304 3 -18.999 2.696 1.75 34.99 4 18.999 1.201 STO Infinity 0.262 6 147.858 4.448 1.69 54.54 7 -17.036 0.094 8 9.235 4.678 1.62 63.39 9 -11.910 4.785 1.75 34.99 10 -27.694 4.254 11 -6.154 0.997 1.73 28.32 12 -18.010 1.545 13 Infinity 0.500 1.52 64.20 14 Infinity 1.189 15 Infinity 0.500 1.52 64.20 16 Infinity 0.125 IMA / /

[0263] Table 3

[0264] Example 4

[0265] like Figure 4 The figure shows a schematic diagram of the optical lens structure of Example 4.

[0266] like Figure 4As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a first side surface S13 of the color filter, a second side surface S14 of the color filter, a first side surface S15 of the protective glass, a second side surface S16 of the protective glass, and an imaging surface IMA.

[0267] The first lens L1 has positive power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has negative power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is concave. The third lens L3 has positive power, the first side surface S6 of the third lens is convex, and the second side surface S7 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S8 of the fourth lens is convex, and the second side surface S9 of the fourth lens is convex. The fifth lens L5 has negative power, the first side surface S9 of the fifth lens is concave, and the second side surface S10 of the fifth lens is convex. The sixth lens L6 has negative power, the first side surface S11 of the sixth lens is concave, and the second side surface S12 of the sixth lens is convex. The light from the first side passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface IMA. Since the fourth lens L4 and the fifth lens L5 are cemented to form a doublet lens, the second side surface S9 of the fourth lens and the first side surface S9 of the fifth lens are the same surface.

[0268] In this example, the total effective focal length F of the optical lens is 16.047 mm, the maximum field of view FOV of the optical lens is 32.080°, and the total length TTL of the optical lens is 28.863 mm.

[0269] Table 4 shows the basic structural parameter table of the optical lens of Example 4, wherein the units of the radius of curvature and thickness / distance are both millimeters (mm).

[0270] Surf Radius Thickness Nd Vd 1 16.761 2.142 1.83 42.73 2 295.851 0.976 3 -15.002 2.018 1.75 34.99 4 15.002 1.511 STO Infinity 0.262 6 16.825 4.440 1.69 54.54 7 -16.497 0.094 8 15.226 3.525 1.62 63.39 9 -13.498 4.785 1.75 34.99 10 -35.180 4.254 11 -7.818 0.997 1.73 28.32 12 -51.999 1.545 13 Infinity 0.500 1.52 64.20 14 Infinity 1.189 15 Infinity 0.500 1.52 64.20 16 Infinity 0.125 IMA / /

[0271] Table 4

[0272] Example 5

[0273] like Figure 5 The figure shows a schematic diagram of the optical lens structure of Example 5.

[0274] like Figure 5As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a first side surface S13 of the color filter, a second side surface S14 of the color filter, a first side surface S15 of the protective glass, a second side surface S16 of the protective glass, and an imaging surface IMA.

[0275] The first lens L1 has positive power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is convex. The second lens L2 has negative power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is concave. The third lens L3 has positive power, the first side surface S6 of the third lens is concave, and the second side surface S7 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S8 of the fourth lens is convex, and the second side surface S9 of the fourth lens is convex. The fifth lens L5 has negative power, the first side surface S9 of the fifth lens is concave, and the second side surface S10 of the fifth lens is convex. The sixth lens L6 has negative power, the first side surface S11 of the sixth lens is concave, and the second side surface S12 of the sixth lens is convex. The light from the first side passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface IMA. Since the fourth lens L4 and the fifth lens L5 are cemented to form a doublet lens, the second side surface S9 of the fourth lens and the first side surface S9 of the fifth lens are the same surface.

[0276] In this example, the total effective focal length F of the optical lens is 15.982 mm, the maximum field of view FOV of the optical lens is 32.080°, and the total length TTL of the optical lens is 30.965 mm.

[0277] Table 5 shows the basic structural parameter table of the optical lens of Example 5, wherein the units of the radius of curvature and thickness / distance are both millimeters (mm).

[0278] Surf Radius Thickness Nd Vd 1 19.159 3.620 1.83 42.73 2 -20.096 0.578 3 -12.585 2.132 1.75 34.99 4 12.585 1.008 STO Infinity 0.850 6 -9.643 3.205 1.69 54.54 7 -8.478 0.200 8 8.716 5.716 1.62 63.39 9 -9.117 4.081 1.75 34.99 10 -38.099 5.201 11 -5.297 0.984 1.73 28.32 12 -8.005 1.084 13 Infinity 0.500 1.52 64.20 14 Infinity 1.181 15 Infinity 0.500 1.52 64.20 16 Infinity 0.125 IMA / /

[0279] Table 5

[0280] Example 6

[0281] like Figure 6 Shown is a schematic diagram of the optical lens structure of Example 6.

[0282] like Figure 6As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a first side surface S13 of the color filter, a second side surface S14 of the color filter, a first side surface S15 of the protective glass, a second side surface S16 of the protective glass, and an imaging surface IMA.

[0283] The first lens L1 has positive power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is convex. The second lens L2 has negative power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is concave. The third lens L3 has positive power, the first side surface S6 of the third lens is concave, and the second side surface S7 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S8 of the fourth lens is convex, and the second side surface S9 of the fourth lens is convex. The fifth lens L5 has negative power, the first side surface S9 of the fifth lens is concave, and the second side surface S10 of the fifth lens is convex. The sixth lens L6 has negative power, the first side surface S11 of the sixth lens is concave, and the second side surface S12 of the sixth lens is convex. The light from the first side passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface IMA. Since the fourth lens L4 and the fifth lens L5 are cemented to form a doublet lens, the second side surface S9 of the fourth lens and the first side surface S9 of the fifth lens are the same surface.

[0284] In this example, the total effective focal length F of the optical lens is 15.967 mm, the maximum field of view FOV of the optical lens is 32.080°, and the total length TTL of the optical lens is 29.767 mm.

[0285] Table 6 shows the basic structural parameter table of the optical lens of Example 6, wherein the units of the radius of curvature and thickness / distance are both millimeters (mm).

[0286] Surf Radius Thickness Nd Vd 1 18.667 3.509 1.83 42.73 2 -20.214 0.699 3 -11.424 2.075 1.75 34.99 4 11.424 0.965 STO Infinity 0.982 6 -8.264 2.341 1.69 54.54 7 -7.165 0.093 8 8.314 5.922 1.62 63.39 9 -9.182 3.000 1.75 34.99 10 -39.589 5.346 11 -4.816 0.924 1.73 28.32 12 -6.432 1.788 13 Infinity 0.500 1.52 64.20 14 Infinity 0.999 15 Infinity 0.500 1.52 64.20 16 Infinity 0.125 IMA / /

[0287] Table 6

[0288] Example 7

[0289] like Figure 7 The figure shows the schematic diagram of the optical lens structure of Example 7.

[0290] like Figure 7As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a first side surface S13 of the color filter, a second side surface S14 of the color filter, a first side surface S15 of the protective glass, a second side surface S16 of the protective glass, and an imaging surface IMA.

[0291] The first lens L1 has positive power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has negative power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is concave. The third lens L3 has positive power, the first side surface S6 of the third lens is convex, and the second side surface S7 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S8 of the fourth lens is convex, and the second side surface S9 of the fourth lens is convex. The fifth lens L5 has negative power, the first side surface S9 of the fifth lens is concave, and the second side surface S10 of the fifth lens is convex. The sixth lens L6 has negative power, the first side surface S11 of the sixth lens is concave, and the second side surface S12 of the sixth lens is concave. The light from the first side passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface IMA. Since the fourth lens L4 and the fifth lens L5 are cemented to form a doublet lens, the second side surface S9 of the fourth lens and the first side surface S9 of the fifth lens are the same surface.

[0292] In this example, the total effective focal length F of the optical lens is 15.982 mm, the maximum field of view FOV of the optical lens is 32.080°, and the total length TTL of the optical lens is 32.642 mm.

[0293] Table 7 shows the basic structural parameter table of the optical lens of Example 7, wherein the units of the radius of curvature Radius and the thickness / distance are both millimeters (mm).

[0294] Surf Radius Thickness Nd Vd 1 16.585 1.652 1.83 42.73 2 108.762 0.659 3 -27.267 2.123 1.75 34.99 4 27.267 1.245 STO Infinity 6.408 6 13.820 5.754 1.69 54.54 7 -34.955 0.094 8 15.453 2.904 1.62 63.39 9 -9.454 3.935 1.75 34.99 10 -52.363 2.116 11 -11.595 2.333 1.73 28.32 12 21.302 1.321 13 Infinity 0.500 1.52 64.20 14 Infinity 0.974 15 Infinity 0.500 1.52 64.20 16 Infinity 0.125 IMA / /

[0295] Table 7

[0296] Example 8

[0297] like Figure 8 Shown is a schematic diagram of the optical lens structure of Example 8.

[0298] like Figure 8As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a first side surface S13 of the color filter, a second side surface S14 of the color filter, a first side surface S15 of the protective glass, a second side surface S16 of the protective glass, and an imaging surface IMA.

[0299] The first lens L1 has positive power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has negative power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is concave. The third lens L3 has positive power, the first side surface S6 of the third lens is convex, and the second side surface S7 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S8 of the fourth lens is convex, and the second side surface S9 of the fourth lens is convex. The fifth lens L5 has negative power, the first side surface S9 of the fifth lens is concave, and the second side surface S10 of the fifth lens is convex. The sixth lens L6 has negative power, the first side surface S11 of the sixth lens is concave, and the second side surface S12 of the sixth lens is concave. The light from the first side passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface IMA. Since the fourth lens L4 and the fifth lens L5 are cemented to form a doublet lens, the second side surface S9 of the fourth lens and the first side surface S9 of the fifth lens are the same surface.

[0300] In this example, the total effective focal length F of the optical lens is 15.980 mm, the maximum field of view FOV of the optical lens is 32.080°, and the total length TTL of the optical lens is 29.876 mm.

[0301] Table 8 shows the basic structural parameter table of the optical lens of Example 8, wherein the units of the radius of curvature and thickness / distance are both millimeters (mm).

[0302] Surf Radius Thickness Nd Vd 1 14.113 1.538 1.83 42.73 2 108.762 0.781 3 -19.344 2.672 1.75 34.99 4 19.344 1.378 STO Infinity 2.004 6 19.271 6.088 1.69 54.54 7 -17.584 0.097 8 12.660 2.691 1.62 63.39 9 -18.289 3.821 1.75 34.99 10 -52.363 1.493 11 -11.611 2.444 1.73 28.32 12 21.252 1.853 13 Infinity 0.500 1.52 64.20 14 Infinity 1.891 15 Infinity 0.500 1.52 64.20 16 Infinity 0.125 IMA / /

[0303] Table 8

[0304] Example 9

[0305] like Figure 9 The figure shows a schematic diagram of the optical lens structure of Example 9.

[0306] like Figure 9As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a first side surface S13 of the color filter, a second side surface S14 of the color filter, a first side surface S15 of the protective glass, a second side surface S16 of the protective glass, and an imaging surface IMA.

[0307] The first lens L1 has positive power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has negative power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is concave. The third lens L3 has positive power, the first side surface S6 of the third lens is concave, and the second side surface S7 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S8 of the fourth lens is convex, and the second side surface S9 of the fourth lens is convex. The fifth lens L5 has negative power, the first side surface S9 of the fifth lens is concave, and the second side surface S10 of the fifth lens is concave. The sixth lens L6 has negative power, the first side surface S11 of the sixth lens is concave, and the second side surface S12 of the sixth lens is convex. The light from the first side passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface IMA. Since the fourth lens L4 and the fifth lens L5 are cemented to form a doublet lens, the second side surface S9 of the fourth lens and the first side surface S9 of the fifth lens are the same surface.

[0308] In this example, the total effective focal length F of the optical lens is 15.999 mm, the maximum field of view FOV of the optical lens is 32.080°, and the total length TTL of the optical lens is 29.094 mm.

[0309] Table 9 shows the basic structural parameter table of the optical lens of Example 9, wherein the units of the radius of curvature and thickness / distance are both millimeters (mm).

[0310] Surf Radius Thickness Nd Vd 1 13.557 2.177 1.83 42.73 2 54.181 0.815 3 -20.863 2.567 1.75 34.99 4 20.863 1.198 STO Infinity 0.495 6 -22.900 4.152 1.69 54.54 7 -11.540 0.098 8 8.490 4.495 1.62 63.39 9 -12.316 4.767 1.75 34.99 10 63.338 4.257 11 -5.564 0.992 1.73 28.32 12 -9.335 0.956 13 Infinity 0.500 1.52 64.20 14 Infinity 1.001 15 Infinity 0.500 1.52 64.20 16 Infinity 0.125 IMA / /

[0311] Table 9

[0312] Example 10

[0313] like Figure 10 The figure shows a schematic diagram of the optical lens structure of Example 10.

[0314] like Figure 10As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a first side surface S13 of the color filter, a second side surface S14 of the color filter, a first side surface S15 of the protective glass, a second side surface S16 of the protective glass, and an imaging surface IMA.

[0315] The first lens L1 has positive power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has negative power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is concave. The third lens L3 has positive power, the first side surface S6 of the third lens is concave, and the second side surface S7 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S8 of the fourth lens is convex, and the second side surface S9 of the fourth lens is convex. The fifth lens L5 has negative power, the first side surface S9 of the fifth lens is concave, and the second side surface S10 of the fifth lens is concave. The sixth lens L6 has negative power, the first side surface S11 of the sixth lens is concave, and the second side surface S12 of the sixth lens is convex. The light from the first side passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface IMA. Since the fourth lens L4 and the fifth lens L5 are cemented to form a doublet lens, the second side surface S9 of the fourth lens and the first side surface S9 of the fifth lens are the same surface.

[0316] In this example, the total effective focal length F of the optical lens is 15.999 mm, the maximum field of view FOV of the optical lens is 32.080°, and the total length TTL of the optical lens is 26.951 mm.

[0317] Table 10 shows the basic structural parameter table of the optical lens of Example 10, wherein the units of the radius of curvature and thickness / distance are both millimeters (mm).

[0318] Surf Radius Thickness Nd Vd 1 13.356 2.172 1.83 42.73 2 56.010 1.157 3 -17.898 2.779 1.75 34.99 4 17.898 1.790 STO Infinity 0.499 6 -18.924 2.000 1.69 54.54 7 -9.750 0.095 8 7.258 3.721 1.62 63.39 9 -14.947 3.867 1.75 34.99 10 38.745 3.736 11 -4.381 0.913 1.73 28.32 12 -6.242 1.663 13 Infinity 0.500 1.52 64.20 14 Infinity 1.434 15 Infinity 0.500 1.52 64.20 16 Infinity 0.125 IMA / /

[0319] Table 10

[0320] Example 11

[0321] like Figure 11 The figure shows a schematic diagram of the optical lens structure of Example 11.

[0322] like Figure 11As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a first side surface S13 of the color filter, a second side surface S14 of the color filter, a first side surface S15 of the protective glass, a second side surface S16 of the protective glass, and an imaging surface IMA.

[0323] The first lens L1 has positive power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has negative power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is concave. The third lens L3 has positive power, the first side surface S6 of the third lens is convex, and the second side surface S7 of the third lens is convex. The fourth lens L4 has negative power, the first side surface S8 of the fourth lens is convex, and the second side surface S9 of the fourth lens is concave. The fifth lens L5 has positive power, the first side surface S9 of the fifth lens is convex, and the second side surface S10 of the fifth lens is concave. The sixth lens L6 has negative power, the first side surface S11 of the sixth lens is convex, and the second side surface S12 of the sixth lens is concave. The light from the first side passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface IMA. Since the fourth lens L4 and the fifth lens L5 are cemented to form a doublet lens, the second side surface S9 of the fourth lens and the first side surface S9 of the fifth lens are the same surface.

[0324] In this example, the total effective focal length F of the optical lens is 15.999 mm, the maximum field of view FOV of the optical lens is 32.080°, and the total length TTL of the optical lens is 28.240 mm.

[0325] Table 11 shows the basic structural parameter table of the optical lens of Example 11, wherein the units of the radius of curvature and thickness / distance are both millimeters (mm).

[0326] Surf Radius Thickness Nd Vd 1 10.376 1.525 1.83 42.73 2 18.705 1.603 3 -12.660 2.480 1.75 34.99 4 12.832 1.617 STO Infinity 0.430 6 31.743 2.376 1.69 54.54 7 -10.605 0.099 8 11.538 3.795 1.75 34.99 9 5.469 2.976 1.62 63.39 10 110.134 2.930 11 11.431 0.989 1.73 28.32 12 7.543 3.147 13 Infinity 0.500 1.52 64.20 14 Infinity 3.147 15 Infinity 0.500 1.52 64.20 16 Infinity 0.125 IMA / /

[0327] Table 11

[0328] Example 12

[0329] like Figure 12 , which is a schematic diagram of the optical lens structure of Example 12.

[0330] like Figure 12As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a first side surface S13 of the color filter, a second side surface S14 of the color filter, a first side surface S15 of the protective glass, a second side surface S16 of the protective glass, and an imaging surface IMA.

[0331] The first lens L1 has positive power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has negative power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is concave. The third lens L3 has positive power, the first side surface S6 of the third lens is convex, and the second side surface S7 of the third lens is convex. The fourth lens L4 has negative power, the first side surface S8 of the fourth lens is convex, and the second side surface S9 of the fourth lens is concave. The fifth lens L5 has positive power, the first side surface S9 of the fifth lens is convex, and the second side surface S10 of the fifth lens is concave. The sixth lens L6 has negative power, the first side surface S11 of the sixth lens is convex, and the second side surface S12 of the sixth lens is concave. The light from the first side passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface IMA. Since the fourth lens L4 and the fifth lens L5 are cemented to form a doublet lens, the second side surface S9 of the fourth lens and the first side surface S9 of the fifth lens are the same surface.

[0332] In this example, the total effective focal length F of the optical lens is 15.999 mm, the maximum field of view FOV of the optical lens is 32.080°, and the total length TTL of the optical lens is 27.532 mm.

[0333] Table 12 shows the basic structural parameter table of the optical lens of Example 12, wherein the units of the radius of curvature Radius and the thickness / distance are both millimeters (mm).

[0334] Surf Radius Thickness Nd Vd 1 10.438 2.000 1.83 42.73 2 18.928 1.483 3 -11.617 1.971 1.75 34.99 4 13.272 1.628 STO Infinity 0.401 6 35.817 2.000 1.69 54.54 7 -9.976 0.099 8 11.494 3.830 1.75 34.99 9 5.391 2.886 1.62 63.39 10 101.100 2.528 11 12.546 1.271 1.73 28.32 12 8.211 3.156 13 Infinity 0.500 1.52 64.20 14 Infinity 3.154 15 Infinity 0.500 1.52 64.20 16 Infinity 0.125 IMA / /

[0335] Table 12

[0336] In summary, Examples 1 to 12 respectively satisfy the relationships shown in Table 13.

[0337]

[0338]

[0339] Table 13

[0340] Table 14 gives the effective focal length F of the optical lenses of Examples 1 to 12, the effective focal length F1 to F6 of each lens, etc. (unit: mm).

[0341]

[0342]

[0343]

[0344] Table 14

[0345] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0346] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0347] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0348] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An optical lens, characterized in that: From the first side to the second side, it includes: A first lens having positive optical power, wherein a first side surface of the first lens is a convex surface; a second lens having negative optical power, wherein the first side surface of the second lens is concave, and the second side surface of the second lens is concave; a third lens having positive optical power, wherein the second side surface of the third lens is a convex surface; a fourth lens having optical power, wherein the first side surface of the fourth lens is a convex surface; a fifth lens having optical power; The sixth lens has negative optical power.

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

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

4. The optical lens according to claim 1, characterized in that: The first side surface of the third lens is a convex surface.

5. The optical lens according to claim 1, characterized in that: The first side surface of the third lens is a concave surface.

6. The optical lens according to claim 1, characterized in that: The fourth lens has positive optical power, and the second side surface of the fourth lens is a convex surface.

7. The optical lens according to claim 1, characterized in that: The fourth lens has negative optical power, and the second side surface of the fourth lens is a concave surface.

8. The optical lens according to claim 1, characterized in that: The fifth lens has negative optical power, and a first side surface of the fifth lens is a concave surface, and a second side surface of the fifth lens is a convex surface.

9. The optical lens according to claim 1, characterized in that: The fifth lens has negative optical power, and a first side surface of the fifth lens is a concave surface, and a second side surface of the fifth lens is a concave surface.

10. An optical lens, characterized in that: From the first side to the second side, it includes: a first lens having positive optical power; a second lens having negative optical power; a third lens having positive refractive power; a fourth lens having optical power; a fifth lens having optical power; a sixth lens having negative optical power; The curvature radius R10 of the second side surface of the fifth lens and the curvature radius R10 of the first side surface of the sixth lens R11 satisfies: |R10 / R11|≥4.3.

Images