Optical lens and electronic device

Abstract

The application provides an optical lens and an electronic device. The optical lens comprises, in sequence from a first side to a second side: a first lens with positive refractive power, the first side of the first lens being a convex surface; a second lens with negative refractive power, the first side of the second lens being a concave surface and the second side being a concave surface; a third lens with positive refractive power, the second side of the third lens being a convex surface; a fourth lens with refractive power, the first side of the fourth lens being a convex surface; a fifth lens with refractive power; and a sixth lens with negative refractive power. The application solves the problem that the optical lens in the prior art is difficult to simultaneously consider high resolution, miniaturization, back focal length, small CRA, low sensitivity and high light quantity.

Description

TECHNICAL FIELD

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

[0002] With the 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 scenes. For example, in the automobile driving industry, in order to ensure driving safety, it is necessary to detect the driving environment more accurately, and the optical lens becomes a key device for detecting information around the car. With the continuous development of automobile driving systems, especially the innovation of automatic driving technology brought by the development of big data and artificial intelligence in recent years, the market requirements for vehicle front-view optical lenses are also increasingly strict, such as the contradiction between low cost, low sensitivity and high resolution, the contradiction between small aperture, miniaturization and high light quantity, high pixels, and different use conditions for field of view requirements. At the same time, considering the high safety requirements of automobile driving, the proportion of thermal stability and vibration stability of the optical lens is also increasing.

[0003] However, the current optical lens still has some problems, for example: if the vehicle-mounted lens needs good resolution performance, aspherical lenses need to be used to improve the resolution, which will increase the cost and make it difficult to achieve low cost; at the same time, the vehicle front-view optical lens requires good middle and long distance imaging performance, and the existing lens architecture using only 6 spherical lenses has the problem of not being able to balance high resolution, high light quantity and low sensitivity; in addition, the existing vehicle-mounted lens is difficult to realize long back focus, miniaturization and small CRA at the same time, and cannot be well matched with the assembly of vehicle-mounted chips; the existing optical lens usually needs high light quantity, which requires a large light aperture, which is difficult to balance with the requirement of miniaturization.

[0004] That is, the optical lens in the prior art has the problem of being difficult to balance high resolution, miniaturization, long back focus, small CRA, low sensitivity and high light quantity at the same time. SUMMARY

[0005] The main purpose of the present application is to provide an optical lens and an electronic device to solve the problem that the optical lens in the prior art is difficult to balance high resolution, miniaturization, long back focus, small CRA, low sensitivity and high light quantity at the same time.

[0006] To achieve the above object, according to one aspect of the present application, there is provided an optical lens comprising, in order from a first side to a second side: a first lens having positive refractive power, the first side of the first lens being convex; a second lens having negative refractive power, the first side of the second lens being concave and the second side being concave; a third lens having positive refractive power, the second side of the third lens being convex; a fourth lens having refractive power, the first side of the fourth lens being convex; a fifth lens having refractive power; and a sixth lens having negative refractive power.

[0007] Further, the second side of the first lens is concave.

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

[0009] Further, the first side of the third lens is convex.

[0010] Further, the first side of the third lens is concave.

[0011] Further, the fourth lens has positive refractive power, and the second side of the fourth lens is convex.

[0012] Further, the fourth lens has negative refractive power, and the second side of the fourth lens is concave.

[0013] Further, the fifth lens has negative refractive power, and the first side of the fifth lens is concave and the second side is convex.

[0014] Further, the fifth lens has negative refractive power, and the first side of the fifth lens is concave and the second side is concave.

[0015] Further, the fifth lens has positive refractive power, and the first side of the fifth lens is convex and the second side is concave.

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

[0017] Further, the first side of the sixth lens is concave and the second side is concave.

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

[0019] Further, the fourth lens and the fifth lens are cemented to form a double cemented lens.

[0020] Further, the optical lens further comprises a stop, the stop being disposed between the second lens and the third lens.

[0021] Further, an optical total length of the optical lens, i.e., a center distance TTL from the first side center of the first lens to a center of an imaging surface of the optical lens, and a total focal length value F of the optical lens satisfy: TTL / F≤4.

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

[0023] Further, a maximum light passing aperture D of the first side surface of the first lens, an image height H corresponding to the maximum field of view angle of the optical lens, and a maximum field of view angle FOV of the optical lens satisfy: D / H / FOV≤0.08.

[0024] Further, a maximum light passing aperture D of the first side surface of the first lens, an image height H corresponding to the maximum field of view angle of the optical lens, and a total focal length value F of the optical lens satisfy: D / H / F≤0.2.

[0025] Further, a total focal length value F of the optical lens and an arc value θ of a maximum field of view angle of the optical lens satisfy: F / θ≤30.

[0026] Further, an image height H corresponding to the maximum field of view angle of the optical lens, a total focal length value F of the optical lens, and an arc value θ of a maximum field of view angle of the optical lens satisfy: |(H-F*θ) / (F*θ)|≤0.06.

[0027] Further, a total focal length value F of the optical lens and an entrance pupil diameter ENPD of the optical lens satisfy: F / ENPD≤3.

[0028] Further, an image height H corresponding to the maximum field of view angle of the optical lens, a total focal length value F of the optical lens, and an arc value θ of a maximum field of view 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] Further, 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] Further, a focal length F6 of the sixth lens and a total focal length value F of the optical lens satisfy: F6 / F≥-7.

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

[0033] Further, the absolute value of the ratio between the overall focal length F of the optical lens and the curvature radius R3 of the first side surface of the second lens satisfies: |F / R3|≤8.

[0034] Further, the ratio between the air distance d7 between the third lens and the fourth lens and the optical back focal length BFL of the optical lens, i.e. the distance between the second side center of the last lens of the optical lens and the center of the imaging surface, satisfies: (d7*BFL) / (d7+BFL)≤1.

[0035] Further, the ratio between the curvature radius R6 of the second side surface of the third lens and the overall focal length F of the optical lens satisfies: |R6 / F|≤10.

[0036] Further, the ratio between the curvature radius R7 of the first side surface of the fourth lens and the overall focal length F of the optical lens satisfies: R7 / F≤7.

[0037] Further, the ratio between the curvature radius R10 of the second side surface of the fifth lens and the overall focal length F of the optical lens satisfies: |R10 / F|≥1.2.

[0038] Further, the ratio between the curvature radius R11 of the first side surface of the sixth lens and the overall focal length F of the optical lens satisfies: |R11 / F|≤5.

[0039] Further, the ratio between the curvature radius R10 of the second side surface of the fifth lens and the total optical length TTL of the optical lens, i.e. the distance between the first side center of the first lens and the center of the imaging surface of the optical lens, satisfies: |R10 / TTL|≥0.8.

[0040] Further, the ratio between the center thickness d6 of the third lens and the total optical length TTL of the optical lens, i.e. the distance between the first side center of the first lens and the center of the imaging surface of the optical lens, satisfies: d6 / TTL≥0.02.

[0041] Further, the ratio between the total optical length TTL of the optical lens, i.e. the distance between the first side center of the first lens and the center of the imaging surface of the optical lens, and the center thickness d11 of the sixth lens satisfies: TTL / d11≥6.

[0042] Further, the ratio between the center thickness d8 of the fourth lens, the center thickness d9 of the fifth lens and the total optical length TTL of the optical lens, i.e. the distance between the first side center of the first lens and the center of the imaging surface of the optical lens, satisfies: (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, i.e. the distance TTL from the center of the first side of the first lens to the center of the imaging plane of the optical lens, satisfy the following: |(d26-d6) / TTL|≤0.15.

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

[0045] Furthermore, 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 the following condition: |(d26-d6) / R5|≤0.4.

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

[0047] Furthermore, the maximum effective aperture D7 of the first side of the fourth lens corresponding to the maximum field of view of the optical lens, the radius of curvature R7 of the first side of the fourth lens, and the sag SAG7 of the first side of the fourth lens satisfy the following: arctan(D7 / (R7-SAG7))≥0.2.

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

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

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

[0051] Furthermore, the radius of curvature R11 of the first side surface of the sixth lens and the radius of curvature R12 of the second side surface of the sixth lens satisfy the following condition: |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, the following 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; and a sixth lens having negative optical power; wherein the radius of curvature R10 of the second side surface of the fifth lens and the radius of curvature R11 of the first side surface of the sixth lens satisfy the condition: |R10 / R11|≥4.3.

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

[0054] Further, the first side of the first lens is convex, and the second side of the first lens is convex.

[0055] Further, the first side of the second lens is concave, and the second side of the second lens is concave.

[0056] Further, the first side of the third lens is convex, and the second side of the third lens is convex.

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

[0058] Further, the fourth lens has positive focal power, and the first side of the fourth lens is convex, and the second side of the fourth lens is convex.

[0059] Further, the fourth lens has negative focal power, and the first side of the fourth lens is convex, and the second side of the fourth lens is concave.

[0060] Further, the fifth lens has negative focal power, and the first side of the fifth lens is concave, and the second side of the fifth lens is convex.

[0061] Further, the fifth lens has negative focal power, and the first side of the fifth lens is concave, and the second side of the fifth lens is concave.

[0062] Further, the fifth lens has positive focal power, and the first side of the fifth lens is convex, and the second side of the fifth lens is concave.

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

[0064] Further, the first side of the sixth lens is concave, and the second side of the sixth lens is concave.

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

[0066] Further, the fourth lens and the fifth lens are cemented to form a double cemented lens.

[0067] Further, the optical lens further comprises a diaphragm, and the diaphragm is arranged between the second lens and the third lens.

[0068] Further, the total optical length of the optical lens, i.e., the distance TTL between the first side center of the first lens and the center of the imaging surface of the optical lens and the total focal length F of the optical lens satisfy: TTL / F≤4.

[0069] Further, the optical lens satisfies: (F*theta) / D >= 0.2, wherein F is the total focal length of the optical lens, theta is the radian value of the maximum field angle of the optical lens, and D is the maximum entrance pupil diameter of the optical lens.

[0070] Further, the optical lens satisfies: D / H / FOV <= 0.08, wherein D is the maximum entrance pupil diameter of the first side of the first lens, H is the image height corresponding to the maximum field angle of the optical lens, and FOV is the maximum field angle of the optical lens.

[0071] Further, the optical lens satisfies: D / H / F <= 0.2, wherein D is the maximum entrance pupil diameter of the first side of the first lens, H is the image height corresponding to the maximum field angle of the optical lens, and F is the total focal length of the optical lens.

[0072] Further, the optical lens satisfies: F / theta <= 30, wherein F is the total focal length of the optical lens, and theta is the radian value of the maximum field angle of the optical lens.

[0073] Further, the optical lens satisfies: |(H-F*theta) / (F*theta)| <= 0.06, wherein H is the image height corresponding to the maximum field angle of the optical lens, F is the total focal length of the optical lens, and theta is the radian value of the maximum field angle of the optical lens.

[0074] Further, the optical lens satisfies: F / ENPD <= 3, wherein F is the total focal length of the optical lens, and ENPD is the entrance pupil diameter of the optical lens.

[0075] Further, the optical lens satisfies: 0.4 <= (H / 2) / (F*tan(theta / 2)) <= 2, wherein H is the image height corresponding to the maximum field angle of the optical lens, F is the total focal length of the optical lens, and theta is the radian value of the maximum field angle of the optical lens.

[0076] Further, the optical lens satisfies: |R4 / R5| <= 20, wherein R4 is the radius of curvature of the second side of the second lens, and R5 is the radius of curvature of the first side of the third lens.

[0077] Further, the optical lens satisfies: F6 / F >= -7, wherein F6 is the focal length of the sixth lens, and F is the total focal length of the optical lens.

[0078] Further, the optical lens satisfies: -5 <= F2 / F3 <= -0.02, wherein F2 is the focal length of the second lens, and F3 is the focal length of the third lens.

[0079] Further, the optical lens satisfies: |F / R3| + |F / R4| <= 8, wherein F is the total focal length of the optical lens, R3 is the radius of curvature of the first side of the second lens, and R4 is the radius of curvature of the second side of the second lens.

[0080] Further, an air distance d7 between the third lens and the fourth lens and an optical back focal of the optical lens, i.e. a distance BFL from a center of the second side of the last lens of the optical lens to a center of the imaging surface, satisfy: (d7*BFL) / (d7+BFL)≤1.

[0081] Further, a curvature radius R6 of the second side of the third lens and an overall focal length value F of the optical lens satisfy: |R6 / F|≤10.

[0082] Further, a curvature radius R7 of the first side of the fourth lens and an overall focal length value F of the optical lens satisfy: R7 / F≤7.

[0083] Further, a curvature radius R10 of the second side of the fifth lens and an overall focal length value F of the optical lens satisfy: |R10 / F|≥1.2.

[0084] Further, a curvature radius R11 of the first side of the sixth lens and an overall focal length value F of the optical lens satisfy: |R11 / F|≤5.

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

[0086] Further, a center thickness d6 of the third lens and an optical total track length of the optical lens, i.e. a distance TTL from a center of the first side of the first lens to a center of the imaging surface of the optical lens, satisfy: d6 / TTL≥0.02.

[0087] Further, an optical total track length of the optical lens, i.e. a distance TTL from a center of the first side of the first lens to a center of the imaging surface of the optical lens, and a center thickness d11 of the sixth lens satisfy: TTL / d11≥6.

[0088] Further, a center thickness d8 of the fourth lens, a center thickness d9 of the fifth lens and an optical total track length of the optical lens, i.e. a distance TTL from a center of the first side of the first lens to a center of the imaging surface of the optical lens, satisfy: (d8+d9) / TTL≥0.05.

[0089] Further, a distance d26 between the first lens and the third lens, a center thickness d6 of the third lens and an optical total track length of the optical lens, i.e. a distance TTL from a center of the first side of the first lens to a center of the imaging surface of the optical lens, satisfy: |(d26-d6) / TTL|≤0.15.

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

[0091] Furthermore, 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 the following condition: |(d26-d6) / R5|≤0.4.

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

[0093] Furthermore, the maximum effective aperture D7 of the first side of the fourth lens corresponding to the maximum field of view of the optical lens, the radius of curvature R7 of the first side of the fourth lens, and the sag SAG7 of the first side of the fourth lens satisfy the following: arctan(D7 / (R7-SAG7))≥0.2.

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

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

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

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

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

[0099] According to the technical solution of the present invention, the optical lens includes, from the first side to the second side, a first lens with positive optical power, a second lens with 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 of the first lens is convex; the first side of the second lens is concave, and the second side is concave; the second side of the third lens is convex; the first side of the fourth lens is convex; and a sixth lens with negative optical power.

[0100] The first lens has positive focal power, the first side of the first lens is convex, which can make the light incidence angle smaller, the corresponding image height is smaller under the same field of view, which helps to receive larger angle light and increase light flux; the second side of the first lens can be concave or convex. When the second side of the first lens is concave, the light ray trend is gentle, the resolution is improved, and the system sensitivity is reduced. When the second side of the first lens is convex, the light can be further compressed, the subsequent lens aperture can be reduced, and miniaturization can be realized.

[0101] The second lens has negative focal power, the first side of the second lens is concave, which effectively flattens the front light ray trend, diverges the light, reduces the system sensitivity, and is beneficial to the increase of the subsequent image surface and the correction of aberration; the second side is concave, which further diverges the light, under the condition of the same field of view angle, the subsequent optical system has a larger light receiving surface, the image surface is expanded, the physical aperture of the stop is increased, the aperture is increased, the light amount is increased, and the brightness of the image surface is increased.

[0102] The third lens has positive focal power, the first side of the third lens can be convex or concave. When the first side of the third lens is convex, the light can be effectively collected, the light ray trend is gentle, the system sensitivity is reduced, and the rear aperture is reduced, which is beneficial to miniaturization. When the first side of the third lens is concave, the subsequent optical system has a larger light receiving surface, which is beneficial to balancing aberration and improving resolution. The second side of the third lens is convex, and the shape of the first side of the fourth lens is obviously different, which further changes the light trend, compresses the subsequent aperture, and helps to realize miniaturization.

[0103] The fourth lens has positive focal power or negative focal power, the first side of the fourth lens is convex, which effectively changes the light trend, converges the light, and compresses the rear aperture; the second side of the fourth lens is convex or concave. When the second side of the fourth lens is convex, it is beneficial to realize double cementing with the fifth lens, reasonably allocate the refractive index of the fourth lens and the fifth lens, effectively improve the aberration, and improve the resolution. When the second side of the fourth lens is concave, it is beneficial to realize double cementing with the fifth lens, reasonably allocate the refractive index of the fourth lens and the fifth lens, effectively improve the aberration, and improve the resolution.

[0104] The fifth lens can have positive focal power or negative focal power. When the fifth lens has negative focal power, it is beneficial to diverge the light. When the fifth lens has positive focal power, it helps to reduce the rear aperture and realize miniaturization.

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

[0106] The present application adopts six lenses, and by optimizing the refractive power and surface shape of each lens, the optical lens of the present application has at least one of the following beneficial effects: high resolution, miniaturization, long back focal length, small CRA, low sensitivity, and high light quantity. BRIEF DESCRIPTION OF DRAWINGS

[0107] The accompanying drawings, which form a part of the present application, are intended to provide further understanding of the present application and are incorporated herein for a purpose of explanations of the present application and are not intended as improper limitations to the present application. In the drawings:

[0108] Figure 1 A structure schematic view of the optical lens of the example one of the present application is shown;

[0109] Figure 2 A structure schematic view of the optical lens of the example two of the present application is shown;

[0110] Figure 3 A structure schematic view of the optical lens of the example three of the present application is shown;

[0111] Figure 4 A structure schematic view of the optical lens of the example four of the present application is shown;

[0112] Figure 5 A structure schematic view of the optical lens of the example five of the present application is shown;

[0113] Figure 6 A structure schematic view of the optical lens of the example six of the present application is shown;

[0114] Figure 7 A structure schematic view of the optical lens of the example seven of the present application is shown;

[0115] Figure 8 A structure schematic view of the optical lens of the example eight of the present application is shown;

[0116] Figure 9 A structure schematic view of the optical lens of the example nine of the present application is shown;

[0117] Figure 10 A structure schematic view of the optical lens of the example ten of the present application is shown;

[0118] Figure 11 A structure schematic view of the optical lens of the example eleven of the present application is shown;

[0119] Figure 12 A structure schematic view of the optical lens of the example twelve of the present application is shown.

[0120] In the above drawings, the following reference signs are used:

[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, stop; L3, third lens; S6, first side surface of the third lens; S7, second side surface of the third lens; L4, fourth lens; S8, first side surface of the fourth lens; S9, second side surface of the fourth lens; L5, fifth lens; 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 the embodiments and features of the embodiments in the present application can be combined with each other without conflict, unless otherwise specified. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0123] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs.

[0124] In the present application, unless otherwise specified, the orientation words such as "upper", "lower", "top", "bottom" are generally directed to the directions shown in the drawings, or are directed to the vertical, perpendicular or gravity directions of the components themselves; similarly, for the convenience of understanding and description, "inner" and "outer" refer to the inner and outer relative to the contour of the components themselves, but the above orientation words are not used to limit the present application.

[0125] It should be noted that, in the present 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, the first lens discussed below can also be referred to as the second lens or the third lens without departing from the teachings of the present application.

[0126] In the drawings, the thickness, size and shape of the lenses have been slightly exaggerated for the convenience of illustration. Specifically, the shape of the spherical surface or aspherical surface shown in the drawings is shown by way of example. That is, the shape of the spherical surface or aspherical surface is not limited to the shape of the spherical surface or aspherical surface shown in the drawings. The drawings are merely examples and are not drawn strictly to scale.

[0127] In the present disclosure, the near-axial region refers to a region near the optical axis. If the lens surface is convex and the position of the convex surface is not specified, it means that the lens surface is convex at least in the near-axial region. If the lens surface is concave and the position of the concave surface is not specified, it means that the lens surface is concave at least in the near-axial region. The surface of each lens near the first side is referred to as the first side surface of the lens, and the surface of each lens near the second side is referred to as the second side surface of the lens. The judgment of the surface shape in the near-axial region can be based on the judgment method of a person skilled in the art. The R value (R refers to the radius of curvature in the near-axial region, usually refers to the R value in the lens data of the optical software) is used to judge the convexity and concavity. For the first side surface, when the R value is positive, it is judged to be convex, and when the R value is negative, it is judged to be concave. For the second side surface, when the R value is positive, it is judged to be concave, and when the R value is negative, it is judged to be convex.

[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 example embodiment, the optical lens provided by the present application can be used as a vehicle-mounted lens. For a vehicle-mounted lens, the left side is the object side, and the right side is the image side. The first side is the object side, and the second side is the image side. Light rays 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 example 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. At this time, the image side of the optical lens can be the image source side, and the object side can be the imaging side. Light rays from the image source side can be imaged on the imaging side, and the imaging surface of the optical lens is the image source surface.

[0131] In order to solve the problem that the optical lens in the prior art cannot simultaneously achieve high resolution, miniaturization, long back focal length, small CRA, low sensitivity, and high light throughput, the present application provides an optical lens and an electronic device.

[0132] Embodiment one

[0133] As shown in Figures 1-12 The optical lens sequentially comprises a first lens with positive refractive power, a second lens with negative refractive power, a third lens with positive refractive power, a fourth lens with refractive power, and a fifth lens with refractive power from the first side to the second side; 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 a sixth lens with negative refractive power.

[0134] The first lens has positive focal power, the first side of the first lens is convex, which can make the light incidence angle smaller, the corresponding image height is smaller under the same field of view, which helps to receive larger angle light and increase light flux; the second side of the first lens can be concave or convex. When the second side of the first lens is concave, the light ray trend is gentle, the resolution is improved, and the system sensitivity is reduced. When the second side of the first lens is convex, the light can be further compressed, the subsequent lens aperture can be reduced, and miniaturization can be realized.

[0135] The second lens has negative focal power, the first side of the second lens is concave, which effectively flattens the front light ray trend, diverges the light, reduces the system sensitivity, and is beneficial to the increase of the subsequent image surface and the correction of aberration; the second side is concave, which further diverges the light, under the condition of the same field of view angle, the subsequent optical system has a larger light receiving surface, the image surface is expanded, the physical aperture of the stop is increased, the aperture is increased, the light amount is increased, and the brightness of the image surface is increased.

[0136] The third lens has positive focal power, the first side of the third lens can be convex or concave. When the first side of the third lens is convex, the light can be effectively collected, the light ray trend is gentle, the system sensitivity is reduced, and the rear aperture is reduced, which is beneficial to miniaturization. When the first side of the third lens is concave, the subsequent optical system has a larger light receiving surface, which is beneficial to balancing aberration and improving resolution. The second side of the third lens is convex, and the shape of the first side of the fourth lens is obviously different, which further changes the light trend, compresses the subsequent aperture, and helps to realize miniaturization.

[0137] The fourth lens has positive focal power or negative focal power, the first side of the fourth lens is convex, which effectively changes the light trend, converges the light, and compresses the rear aperture; the second side of the fourth lens is convex or concave. When the second side of the fourth lens is convex, it is beneficial to realize double cementing with the fifth lens, reasonably allocate the refractive index of the fourth lens and the fifth lens, effectively improve the aberration, and improve the resolution. When the second side of the fourth lens is concave, it is beneficial to realize double cementing with the fifth lens, reasonably allocate the refractive index of the fourth lens and the fifth lens, effectively improve the aberration, and improve the resolution.

[0138] The fifth lens can have positive or negative focal power. When the fifth lens has negative focal power, it is beneficial to diverge the light. When the fifth lens has positive focal power, it helps to reduce the rear aperture and realize miniaturization.

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

[0140] The application adopts six lenses, and by optimizing the refractive power and surface shape of each lens, the optical lens has at least one of the following advantages: high resolution, miniaturization, long back focal length, small CRA, low sensitivity, and high light quantity.

[0141] In the embodiment, the second side surface of the first lens is a concave surface. The light ray trend is flattened, the resolution is improved, and the system sensitivity is reduced.

[0142] In the embodiment, the second side surface of the first lens is a convex surface. The light ray can be further compressed, the subsequent lens aperture is reduced, and miniaturization is achieved.

[0143] In the embodiment, the first side surface of the third lens is a convex surface. The light ray can be effectively collected, the light ray trend is flattened, the system sensitivity is reduced, the rear aperture is reduced, and miniaturization is facilitated.

[0144] In the 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 has a larger light receiving surface, which is beneficial to balancing aberration and improving resolution.

[0145] In the embodiment, the fourth lens has positive refractive power, and the second side surface of the fourth lens is a convex surface. The second side surface of the fourth lens is a convex surface, which is beneficial to realizing double cementing with the fifth lens, reasonably distributing the refractive index of the fourth lens and the fifth lens, effectively improving aberration, and improving resolution.

[0146] In the embodiment, the fourth lens has negative refractive 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 beneficial to realizing double cementing with the fifth lens, reasonably distributing the refractive index of the fourth lens and the fifth lens, effectively improving aberration, and improving resolution.

[0147] In the embodiment, the fifth lens has negative refractive power, the first side surface of the fifth lens is a concave surface, and the second side surface of the fifth lens is a convex surface. The second side surface of the fifth lens is a convex surface, which is beneficial to reducing the rear aperture, realizing miniaturization, and having a larger curvature radius ratio of the first side surface of the sixth lens, thereby ensuring high resolution, effectively reducing system sensitivity, and weakening ghost images.

[0148] In the embodiment, the fifth lens has negative refractive power, the first side surface of the fifth lens is a concave surface, and the second side surface of the fifth lens is a concave surface. The second side surface of the fifth lens is a concave surface, which is beneficial to increasing the back focal length, reducing CRA, and having a larger curvature radius ratio of the first side surface of the sixth lens, thereby ensuring high resolution, effectively reducing system sensitivity, and weakening ghost images.

[0149] In the embodiment, the fifth lens has positive refractive power, and the first side surface of the fifth lens is convex, and the second side surface of the fifth lens is concave. The first side surface of the fifth lens is convex, and the fourth lens is double cemented, which reasonably distributes the refractive indices of the fourth lens and the fifth lens, effectively improves aberration, and improves resolution; the fifth lens has positive refractive power, which helps to reduce the rear aperture and realize miniaturization.

[0150] In the embodiment, the first side surface of the sixth lens is concave, and the second side surface of the sixth lens is convex. The first side surface of the sixth lens is concave, which makes the front light diverge, is beneficial to increase the back focus, is beneficial to the assembly of the module, expands the image surface, and reduces the CRA; the second side surface of the sixth lens is convex, which helps to reduce the rear aperture and realize miniaturization.

[0151] In the embodiment, the first side surface of the sixth lens is concave, and the second side surface of the sixth lens is concave. The second side surface of the sixth lens is concave, which is beneficial to increase the back focus, is beneficial to the assembly of the module, expands the image surface, and reduces the CRA.

[0152] In the embodiment, the first side surface of the sixth lens is convex, and the second side surface of the sixth lens is concave. The first side surface of the sixth lens is convex, which helps to balance aberration, reduces the rear aperture, and realizes miniaturization.

[0153] In the embodiment, the fourth lens and the fifth lens are cemented to form a double cemented lens. The fourth lens and the fifth lens are cemented, which can smoothly transition the light passing through the third lens to the imaging surface, and reduce the total length. Various aberrations of the optical system are fully corrected, the resolution can be improved, and the optical performance such as distortion and CRA can be optimized under the premise of compact structure. By setting the double cemented lens, the air gap of the two lenses can be reduced, the total length of the system can be reduced; meanwhile, the assembly components between the fourth lens and the fifth lens are reduced, the process is reduced, the cost is reduced; meanwhile, the tolerance sensitivity problem of the lens unit caused by the assembly process is reduced; the light loss caused by the reflection between the lenses is also reduced, the illumination is improved; further, the field curvature can be reduced, and the off-axis point aberration of the system can be corrected.

[0154] In the embodiment, the optical lens further includes a diaphragm, and the diaphragm is arranged between the second lens and the third lens. By arranging the diaphragm between the second lens and the third lens, the light entering the optical system can be effectively collected, the lens aperture at the rear end of the optical system can be reduced, and the assembly sensitivity of the system can be reduced.

[0155] In the embodiment, the optical total length of the optical lens, that is, the center distance TTL from the first side of the first lens to the center of the imaging surface of the optical lens and the total focal length F of the optical lens satisfy: TTL / F≤4. Controlling the optical total length and the total focal length of the optical lens within this range can realize the miniaturization of the system. Preferably, TTL / F≤3.

[0156] In the embodiment, the following condition is met: (F*theta) / D >= 0.2, where F is the total focal length of the optical lens, theta is the radian value of the maximum field of view of the optical lens, and D is the maximum entrance pupil diameter of the first side surface of the first lens. The front end diameter of the optical lens can be made small, and the imaging system volume of the optical lens can be reduced. Preferably, (F*theta) / D >= 0.4.

[0157] In the embodiment, the following condition is met: D / H / FOV <= 0.08, where D is the maximum entrance pupil diameter of the first side surface of the first lens, H is the image height corresponding to the maximum field of view of the optical lens, and FOV is the maximum field of view of the optical lens. The front end diameter is small, and miniaturization can be achieved. Preferably, D / H / FOV <= 0.05.

[0158] In the embodiment, the following condition is met: D / H / F <= 0.2, where D is the maximum entrance pupil diameter of the first side surface of the first lens, H is the image height corresponding to the maximum field of view of the optical lens, and F is the total focal length of the optical lens. The optical lens can provide the characteristics of a large target surface and a small diameter under the condition that the focal length is fixed. Preferably, D / H / F <= 0.1.

[0159] In the embodiment, the following condition is met: F / theta <= 30, where F is the total focal length of the optical lens, and theta is the radian value of the maximum field of view of the optical lens. The appropriate ratio of focal length to field of view is designed, which ensures low sensitivity of the system while achieving small CRA, long back focus, and high resolution. Preferably, 25 <= F / theta <= 29.5.

[0160] In the embodiment, the following condition is met: |(H-F*theta) / (F*theta)| <= 0.06, where H is the image height corresponding to the maximum field of view of the optical lens, F is the total focal length of the optical lens, and theta is the radian value of the maximum field of view of the optical lens. The focal length of the optical lens is increased while the field of view and the imaging surface size of the optical lens remain unchanged, which highlights the imaging effect of the central region of the imaging surface of the optical lens. Preferably, |(H-F*theta) / (F*theta)| <= 0.04.

[0161] In the embodiment, the following condition is met: F / ENPD <= 3, where F is the total focal length of the optical lens, and ENPD is the entrance pupil diameter of the optical lens. The small FNO is beneficial to increase the light quantity. Preferably, F / ENPD <= 2.5.

[0162] In the embodiment, the image height H corresponding to the maximum field angle of the optical lens, the focal length F of the whole optical lens, and the radian 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 angle resolution. Preferably, 0.8≤(H / 2) / (F*tan(θ / 2))≤1.5.

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

[0164] In the embodiment, the radius of curvature R10 of the second side surface of the fifth lens and the radius of curvature R11 of the first side surface of the sixth lens satisfy: |R10 / R11|≥4.3. Satisfying this condition formula makes the curvature radius ratio of adjacent surfaces larger, which effectively reduces the system sensitivity while ensuring high resolution, and is beneficial to concentrate the energy of ghost images away from the imaging surface and effectively weaken the ghost images. Preferably, |R10 / R11|≥4.45.

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

[0166] In the 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 two adjacent lenses of the second lens and the third lens to be opposite in sign and similar in value is helpful for smooth transition of light rays and balancing aberration. Preferably, -3≤F2 / F3≤-0.05.

[0167] In the embodiment, the focal length F of the whole 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. Satisfying this condition formula is beneficial to control the surface curvature of the second lens, appropriately diverge the light rays, make the subsequent optical system have a larger light receiving surface, and is beneficial to balancing aberration and improving the light amount. Preferably, |F / R3|+|F / R4|≤6.

[0168] In the embodiment, the air gap d7 between the third lens and the fourth lens and the optical back focal length of the optical lens, i.e. the distance BFL from the center of the second side of the last lens of the optical lens to the center of the imaging surface, satisfy the condition (d7*BFL) / (d7+BFL)≤1. Satisfying the condition helps to balance the ratio of the optical back focal length and the distance between the third lens and the fourth lens, increases the assembly yield, and helps to make the optical system have sufficient back focal length to place other optical elements, thereby increasing the design flexibility. Preferably, (d7*BFL) / (d7+BFL)≤0.5.

[0169] In the embodiment, the curvature radius R6 of the second side of the third lens and the total focal length F of the optical lens satisfy the condition |R6 / F|≤10. Controlling the curvature radius of the second side of the third lens helps the light rays to smoothly transition to the rear, reduces aberration, and improves resolution. Preferably, |R6 / F|≤6.

[0170] In the embodiment, the curvature radius R7 of the first side of the fourth lens and the total focal length F of the optical lens satisfy the condition R7 / F≤7. Controlling the curvature radius of the first side of the fourth lens converges light rays, reduces the size of the subsequent optical system, and reduces the size of the rear port. Preferably, R7 / F≤5.

[0171] In the embodiment, the curvature radius R10 of the second side of the fifth lens and the total focal length F of the optical lens satisfy the condition |R10 / F|≥1.2. By controlling the curvature radius of the second side of the fifth lens to be relatively large, the light rays transition more smoothly, effectively reduces the sensitivity of the system, and weakens the ghost image at the position. Preferably, |R10 / F|≥1.5.

[0172] In the embodiment, the curvature radius R11 of the first side of the sixth lens and the total focal length F of the optical lens satisfy the condition |R11 / F|≤5. Satisfying the condition helps to increase the back focal length, facilitates the assembly of the module, expands the image surface, and reduces the CRA. Preferably, |R11 / F|≤3.

[0173] In the embodiment, the curvature radius R10 of the second side of the fifth lens and the total optical length of the optical lens, i.e. the distance TTL from the center of the first side of the first lens to the center of the imaging surface of the optical lens, satisfy the condition |R10 / TTL|≥0.8. Satisfying the condition reduces the sensitivity of the system while achieving miniaturization. Preferably, |R10 / TTL|≥0.85.

[0174] In the embodiment, the center thickness d6 of the third lens and the total optical length of the optical lens, i.e., the center distance TTL from the first side center of the first lens to the imaging surface of the optical lens, satisfy d6 / TTL≥0.02. The large center thickness of the third lens is beneficial to the machinability of the lens and can make the light trend stable in combination with the second lens with a negative focal length. Preferably, d6 / TTL≥0.04.

[0175] In the embodiment, the center thickness d6 of the third lens and the total optical length of the optical lens, i.e., the center distance TTL from the first side center of the first lens to the imaging surface of the optical lens, satisfy d6 / TTL≥0.02. The large center thickness of the third lens is beneficial to the machinability of the lens and can make the light trend stable in combination with the second lens with a negative focal length. Preferably, d6 / TTL≥0.04.

[0176] In the embodiment, the center thickness d6 of the third lens and the total optical length of the optical lens, i.e., the center distance TTL from the first side center of the first lens to the imaging surface of the optical lens, satisfy d6 / TTL≥0.02. The large center thickness of the third lens is beneficial to the machinability of the lens and can make the light trend stable in combination with the second lens with a negative focal length. Preferably, d6 / TTL≥0.04.

[0177] In the embodiment, the center thickness d6 of the third lens and the total optical length of the optical lens, i.e., the center distance TTL from the first side center of the first lens to the imaging surface of the optical lens, satisfy d6 / TTL≥0.02. The large center thickness of the third lens is beneficial to the machinability of the lens and can make the light trend stable in combination with the second lens with a negative focal length. Preferably, d6 / TTL≥0.04.

[0178] In the embodiment, the center thickness d6 of the third lens and the total optical length of the optical lens, i.e., the center distance TTL from the first side center of the first lens to the imaging surface of the optical lens, satisfy d6 / TTL≥0.02. The large center thickness of the third lens is beneficial to the machinability of the lens and can make the light trend stable in combination with the second lens with a negative focal length. Preferably, d6 / TTL≥0.04.

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

[0180] In the embodiment, the maximum effective aperture D7 of the first side surface of the fourth lens corresponding to the maximum field of view 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 condition: arctan(D7 / (R7-SAG7))≥0.2. Reasonable control of the opening angle of the first side surface of the fourth lens helps to weaken ghost images. Preferably, arctan(D7 / (R7-SAG7))≥0.4.

[0181] In the embodiment, the maximum effective aperture D7 of the first side surface of the fourth lens corresponding to the maximum field of view 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 condition: arctan(D7 / (R7-SAG7))≥0.2. Reasonable control of the opening angle of the first side surface of the fourth lens helps to weaken ghost images. Preferably, arctan(D7 / (R7-SAG7))≥0.4.

[0182] In the embodiment, the radius of curvature R10 of the second side surface of the fifth lens, the central thickness d8 of the fourth lens, and the central thickness d9 of the fifth lens satisfy the condition: |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 central thickness of the double-cemented lens can effectively weaken the ghost images generated by the double-cemented lens, while making the light ray trend gentle, thereby reducing the system sensitivity. Preferably, |R10 / (d8+d9)|≥2.95. More preferably, |R10 / (d8+d9)|≥3.2.

[0183] In the embodiment, the radius of curvature R10 of the second side surface of the fifth lens and the central thickness d9 of the fifth lens satisfy the condition: |R10 / d9|≥5.2. Reasonable control of the radius of curvature of the second side surface of the fifth lens and the central thickness of the fifth lens can make the light rays emitted from the double-cemented lens more gentle, effectively reduce the CRA, and reduce the 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 the following condition: |R12 / d11|≤55. Controlling the ratio of the radius of curvature of the second side surface of the last lens to its center thickness prevents it from becoming too large, ensuring that ghosting can be reduced under small CRA (Curvature Radius Aspect Ratio), while also improving the lens's manufacturability. Preferably, |R12 / d11|≤22. More preferably, |R12 / d11|≤18.5.

[0185] In this embodiment, the radius of curvature R11 of the first side surface of the sixth lens and the radius of curvature R12 of the second side surface of the sixth lens satisfy the condition: |R11 / R12|≥0.1. This controls the ratio of the radii of curvature of the first and second side surfaces of the last lens to avoid being too small, ensuring a small CRA while reducing ghosting at that location. Preferably, |R11 / R12|≥0.25. More preferably, |R11 / R12|≥0.32.

[0186] Example 2

[0187] like Figures 1-12 As shown, the optical lens, from the first side to the second side, sequentially includes: a first lens with positive optical power; a second lens with negative optical power; a third lens with positive optical power; a fourth lens with optical power; a fifth lens with optical power; and a sixth lens with negative optical power. The radius of curvature R10 of the second side of the fifth lens and the radius of curvature R11 of the first side of the sixth lens satisfy the condition: |R10 / R11|≥4.3. Satisfying this condition results in a large ratio of the radii of curvature of adjacent surfaces, which effectively reduces system sensitivity while ensuring high resolution. This helps to move the energy concentration point of the ghost image away from the imaging surface, effectively reducing the ghost image at that location. Preferably, |R10 / R11|≥4.45.

[0188] In this embodiment, the first side of the first lens is convex, which allows for a smaller incident angle of light and a smaller image height under the same field of view, which helps to receive light at a larger angle and increases the light flux; the second side is concave, which smooths the light path, improves resolution, and reduces system sensitivity.

[0189] 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 helps to receive light at a larger angle and increase the light flux. The second side surface of the first lens is convex, which can further compress the light and reduce the aperture of subsequent lenses, thereby achieving miniaturization.

[0190] In the embodiment, the first side surface of the second lens is concave, which effectively flattens the light ray trend, diverges the light ray, reduces the system sensitivity, and is beneficial to the increase of the subsequent image surface and the correction of aberration; and the second side surface is concave, which further diverges the light ray, and under the condition of the same field of view angle, can make the subsequent optical system have a larger light ray receiving surface, expand the image surface, and meanwhile can realize the increase of the physical aperture and the increase of the aperture, realize the larger light quantity, and increase the brightness of the image surface.

[0191] In the embodiment, the first side surface of the third lens is convex, which can effectively converge the light ray, flatten the light ray trend, reduce the system sensitivity, and reduce the rear aperture, which is beneficial to the miniaturization; and the second side surface is convex, which is obviously different from the shape of the first side surface of the fourth lens, further changes the light ray trend, compresses the subsequent aperture, and is helpful to the miniaturization.

[0192] In the embodiment, the first side surface of the third lens is concave, which can make the subsequent optical system have a larger light ray receiving surface, is beneficial to the balance of aberration, and improves the resolution; and the second side surface is convex, which is obviously different from the shape of the first side surface of the fourth lens, further changes the light ray trend, compresses the subsequent aperture, and is helpful to the miniaturization.

[0193] In the embodiment, the fourth lens has positive refractive power, and the first side surface of the fourth lens is convex, which effectively changes the light ray trend, converges the light ray, and compresses the rear aperture; and the second side surface is convex, which is beneficial to the double cementing with the fifth lens, reasonably distributes the refractive index of the fourth lens and the fifth lens, and under the premise, can effectively improve the aberration and improve the resolution.

[0194] In the embodiment, the fourth lens has negative refractive power, and the first side surface of the fourth lens is convex, which effectively changes the light ray trend, converges the light ray, and compresses the rear aperture; and the second side surface is concave, which is beneficial to the double cementing with the fifth lens, reasonably distributes the refractive index of the fourth lens and the fifth lens, and under the premise, can effectively improve the aberration and improve the resolution.

[0195] In the embodiment, the fifth lens has negative refractive 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 is helpful to reduce the rear aperture and realize the miniaturization, and at the same time, the ratio of the curvature radius of the first side surface of the fifth lens to the first side surface of the sixth lens is large, which ensures the high resolution, effectively reduces the system sensitivity, and weakens the ghost image at the place.

[0196] In the embodiment, the fifth lens has negative refractive 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 is helpful to increase the back focal length and reduce the CRA, and at the same time, the ratio of the curvature radius of the first side surface of the fifth lens to the first side surface of the sixth lens is large, which ensures the high resolution, effectively reduces the system sensitivity, and weakens the ghost image at the place.

[0197] In the embodiment, the fifth lens has positive refractive power, and the first side surface of the fifth lens is convex, and the second side surface of the fifth lens is concave. The first side surface of the fifth lens is convex, and the fourth lens is double cemented, which reasonably distributes the refractive indices of the fourth lens and the fifth lens, effectively improves aberration, and improves resolution; the fifth lens has positive refractive power, which helps to reduce the rear aperture and realize miniaturization.

[0198] In the embodiment, the first side surface of the sixth lens is concave, and the second side surface of the sixth lens is convex. The first side surface of the sixth lens is concave, which makes the front light diverge, is beneficial to increase the back focus, is beneficial to the assembly of the module, expands the image surface, and reduces the CRA; the second side surface of the sixth lens is convex, which helps to reduce the rear aperture and realize miniaturization.

[0199] In the embodiment, the first side surface of the sixth lens is concave, and the second side surface of the sixth lens is concave. The second side surface of the sixth lens is concave, which is beneficial to increase the back focus, is beneficial to the assembly of the module, expands the image surface, and reduces the CRA.

[0200] In the embodiment, the first side surface of the sixth lens is convex, and the second side surface of the sixth lens is concave. The first side surface of the sixth lens is convex, which helps to balance aberration, reduces the rear aperture, and realizes miniaturization.

[0201] In the embodiment, the fourth lens and the fifth lens are cemented to form a double cemented lens. The fourth lens and the fifth lens are cemented, which can smoothly transition the light passing through the third lens to the imaging surface, and reduce the total length. Various aberrations of the optical system are fully corrected, the resolution can be improved, and the optical performance such as distortion and CRA can be optimized under the premise of compact structure. By setting the double cemented lens, the air gap of the two lenses can be reduced, the total length of the system can be reduced, the components between the fourth lens and the fifth lens can be reduced, the process can be reduced, the cost can be reduced, the tolerance sensitivity problem of the lens unit caused by the assembly process can be reduced, the light loss caused by the reflection between the lenses can be reduced, the illumination can be improved, the field curvature can be reduced, and the off-axis point aberration of the system can be corrected.

[0202] In the embodiment, the optical lens further includes a diaphragm, and the diaphragm is arranged between the second lens and the third lens. By arranging the diaphragm between the second lens and the third lens, the light entering the optical system can be effectively collected, the lens aperture of the rear end of the optical system can be reduced, and the assembly sensitivity of the system can be reduced.

[0203] In the embodiment, the optical total length of the optical lens, that is, the center distance TTL from the first side of the first lens to the center of the imaging surface of the optical lens and the total focal length F of the optical lens satisfy: TTL / F≤4. Controlling the optical total length and the total focal length of the optical lens within this range can realize the miniaturization of the system. Preferably, TTL / F≤3.

[0204] In the embodiment, the (F*theta) / D is greater than or equal to 0.2, where F is the focal length of the optical lens, theta is the maximum field angle of the optical lens, and D is the maximum entrance pupil diameter of the first side of the first lens. The front diameter of the optical lens can be made small, and the imaging system volume of the optical lens can be reduced. Preferably, the (F*theta) / D is greater than or equal to 0.4.

[0205] In the embodiment, the D / H / FOV is less than or equal to 0.08, where D is the maximum entrance pupil diameter of the first side of the first lens, H is the image height corresponding to the maximum field angle of the optical lens, and FOV is the maximum field angle of the optical lens. The front diameter is small, and miniaturization can be achieved. Preferably, the D / H / FOV is less than or equal to 0.05.

[0206] In the embodiment, the D / H / F is less than or equal to 0.2, where D is the maximum entrance pupil diameter of the first side of the first lens, H is the image height corresponding to the maximum field angle of the optical lens, and F is the focal length of the optical lens. The optical lens can have a large target surface and a small diameter under the condition that the focal length is fixed. Preferably, the D / H / F is less than or equal to 0.1.

[0207] In the embodiment, the F / theta is less than or equal to 30, where F is the focal length of the optical lens, and theta is the maximum field angle of the optical lens. The ratio of the focal length to the field angle is appropriate, and the system has low sensitivity, small CRA, long back focus, and high resolution. Preferably, 25 is less than or equal to F / theta and F / theta is less than or equal to 29.5.

[0208] In the embodiment, the |(H-F*theta) / (F*theta)| is less than or equal to 0.06, where H is the image height corresponding to the maximum field angle of the optical lens, F is the focal length of the optical lens, and theta is the maximum field angle of the optical lens. The focal length of the optical lens is increased, and the imaging effect of the center region of the imaging surface of the optical lens is highlighted. Preferably, the |(H-F*theta) / (F*theta)| is less than or equal to 0.04.

[0209] In the embodiment, the F / ENPD is less than or equal to 3, where F is the focal length of the optical lens, and ENPD is the entrance pupil diameter of the optical lens. The FNO is small, and the light quantity is increased. Preferably, the F / ENPD is less than or equal to 2.5.

[0210] In the embodiment, the image height H corresponding to the maximum field angle of the optical lens, the focal length F of the whole optical lens, and the radian 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 angle resolution. Preferably, 0.8≤(H / 2) / (F*tan(θ / 2))≤1.5.

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

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

[0213] In the 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, which are two adjacent lenses, have opposite signs and similar values, which is helpful for the smooth transition of light rays and the balance of aberration. Preferably, -3≤F2 / F3≤-0.05.

[0214] In the embodiment, the focal length F of the whole 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. Satisfying this condition is beneficial to controlling the surface curvature of the second lens, appropriately diverging the light rays, making the subsequent optical system have a larger light receiving surface, balancing the aberration, and increasing the light intake. Preferably, |F / R3|+|F / R4|≤6.

[0215] In the embodiment, the air gap d7 between the third lens and the fourth lens and the optical back focal length of the optical lens, i.e., the distance BFL from the center of the second side surface of the last lens of the optical lens to the center of the imaging surface satisfy: (d7*BFL) / (d7+BFL)≤1. Satisfying this condition is helpful for balancing the ratio of the optical back focal length to the distance between the third lens and the fourth lens, which can increase the assembly yield, and is also helpful for the optical system to have sufficient back focal length to place other optical elements, thereby increasing the design flexibility. Preferably, (d7*BFL) / (d7+BFL)≤0.5.

[0216] In the embodiment, the radius of curvature R6 of the second side surface of the third lens satisfies |R6 / F|≤10, where F is the total focal length of the optical lens. Controlling the radius of curvature of the second side surface of the third lens facilitates smooth transition of light rays to the rear, reduces aberration, and improves resolution. Preferably, |R6 / F|≤6.

[0217] In the embodiment, the radius of curvature R7 of the first side surface of the fourth lens satisfies R7 / F≤7, where F is the total focal length of the optical lens. Controlling the radius of curvature of the first side surface of the fourth lens converges light rays, reduces the size of the subsequent optical system, and reduces the size of the rear port. Preferably, R7 / F≤5.

[0218] In the embodiment, the radius of curvature R10 of the second side surface of the fifth lens satisfies |R10 / F|≥1.2, where F is the total focal length of the optical lens. By controlling the radius of curvature of the second side surface of the fifth lens to be relatively large, the transition of light rays is relatively smooth, the sensitivity of the system is effectively reduced, and the ghost image at this position is weakened. Preferably, |R10 / F|≥1.5.

[0219] In the embodiment, the radius of curvature R11 of the first side surface of the sixth lens satisfies |R11 / F|≤5, where F is the total focal length of the optical lens. Satisfying this condition facilitates increasing the back focus and facilitates assembly of the module; at the same time, the image surface is expanded and the CRA is reduced. Preferably, |R11 / F|≤3.

[0220] In the embodiment, the radius of curvature R10 of the second side surface of the fifth lens satisfies |R10 / TTL|≥0.8, where TTL is the total optical length of the optical lens, i.e., the distance from the center of the first side of the first lens to the center of the imaging surface of the optical lens. Satisfying this condition reduces the sensitivity of the system while achieving miniaturization. Preferably, |R10 / TTL|≥0.85.

[0221] In the embodiment, the center thickness d6 of the third lens satisfies d6 / TTL≥0.02, where TTL is the total optical length of the optical lens, i.e., the distance from the center of the first side of the first lens to the center of the imaging surface of the optical lens. The relatively large center thickness of the third lens facilitates lens processing and enables smooth light ray behavior in combination with the second lens having a negative focal length. Preferably, d6 / TTL≥0.04.

[0222] In the embodiment, the total optical length TTL of the optical lens, i.e., the distance from the center of the first side of the first lens to the center of the imaging surface of the optical lens, satisfies TTL / d11≥6, where d11 is the center thickness of the sixth lens. Satisfying this condition reasonably matches the center thickness of the sixth lens and the total optical length, enabling miniaturization while achieving small CRA. Preferably, TTL / d11≥9.

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

[0224] In the 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, i.e., the center distance TTL from the first side center 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 have a small ratio to the total length, which can effectively reduce the system sensitivity and weaken the ghost image of the reflection of each surface. Preferably, |(d26-d6) / TTL|≤0.05.

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

[0226] In the 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 have a small ratio to the radius of curvature of the first side surface of the third lens, which can effectively reduce the system sensitivity and weaken the ghost image of the reflection of each surface. Preferably, |(d26-d6) / R5|≤0.05.

[0227] In the embodiment, the maximum light passing 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. Controlling the maximum light passing aperture of the first side surface of the first lens and the radius of curvature of the first side surface can simultaneously realize a small aperture at the front end and a high light passing amount. Preferably, D / R1≥0.2.

[0228] In the 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 curvature radius R7 of the first side surface of the fourth lens, and the sag SAG7 of the first side surface of the fourth lens satisfy: arctan(D7 / (R7-SAG7))≥0.2. Reasonably controlling the opening angle of the first side surface of the fourth lens helps to weaken the ghost image. Preferably, arctan(D7 / (R7-SAG7))≥0.4.

[0229] In the embodiment, the curvature radius R10 of the second side surface of the fifth lens, the central thickness d8 of the fourth lens, and the central thickness d9 of the fifth lens satisfy: |R10 / (d8+d9)|≥2.5. Reasonably controlling the ratio of the curvature radius of the second side surface of the doublet lens to the central thickness of the doublet lens can effectively weaken the ghost image generated by the doublet lens, while making the light trend at this place gentle, thereby reducing the system sensitivity. Preferably, |R10 / (d8+d9)|≥2.95. More preferably, |R10 / (d8+d9)|≥3.2.

[0230] In the embodiment, the curvature radius R10 of the second side surface of the fifth lens and the central thickness d9 of the fifth lens satisfy: |R10 / d9|≥5.2. Reasonably controlling the curvature radius of the second side surface of the fifth lens and the central thickness of the fifth lens can make the light emitted from the doublet lens more gentle, effectively reduce the CRA, and reduce the system sensitivity. Preferably, |R10 / d9|≥5.3. More preferably, |R10 / d9|≥6.

[0231] In the embodiment, the curvature radius R12 of the second side surface of the sixth lens and the central thickness d11 of the sixth lens satisfy: |R12 / d11|≤55. Controlling the ratio of the curvature radius of the second side surface of the last lens to the central thickness not to be too large ensures that the corresponding ghost image can be weakened under small CRA, while improving the processability of the lens. Preferably, |R12 / d11|≤22. More preferably, |R12 / d11|≤18.5.

[0232] In the 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. Controlling the ratio of the curvature radius of the first side surface to the curvature radius of the second side surface of the last lens not to be too small ensures that the ghost image at this place is weakened while small CRA is ensured. Preferably, |R11 / R12|≥0.25. More preferably, |R11 / R12|≥0.32.

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

[0234] The optical lens in the present application can adopt multiple lenses, for example, the above-mentioned six lenses. The present application does not specifically limit the specific number of spherical lenses and aspherical lenses. When the imaging quality is emphasized, the number of aspherical lenses can be increased. The aspherical lens has the characteristic that the curvature is continuously changed from the center of the lens to the periphery of the lens. Unlike the spherical lens which has a constant curvature from the center of the lens to the periphery of the lens, the aspherical lens has better curvature radius characteristics, and has the advantages of improving the distortion aberration and improving the astigmatism aberration. After the aspherical lens is adopted, the aberration that occurs during imaging can be eliminated as much as possible, thereby improving the imaging quality.

[0235] In the exemplary embodiments, the present application does not limit the plastic and glass of the lenses. If the temperature performance is emphasized, the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens can all be glass lenses. The optical lens made of glass can inhibit the shift of the back focus of the optical lens with the change of temperature, so as to improve the system stability. At the same time, the use of glass material can avoid the imaging blur of the lens caused by the high and low temperature changes in the use environment, which affects the normal use of the optical lens. For example, the optical lens with all-glass design has a wide temperature range, and can maintain stable optical performance in the range of -40℃ to 105℃. Specifically, when the imaging quality and reliability are emphasized, the first lens to the sixth lens can all be glass aspherical lenses. Of course, in the application occasion with low temperature stability requirement, the first lens to the sixth lens in the optical lens can also be made of plastic. The optical lens made of plastic can effectively reduce the manufacturing cost. Of course, the first lens to the sixth lens in the optical lens can also be made of plastic and glass.

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

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

[0238] The specific surface shape and parameters of the optical lens applicable to the above-mentioned embodiments will be further described below with reference to the accompanying drawings.

[0239] It should be noted that any of the examples one through twelve below are applicable to all embodiments of this application.

[0240] Example 1

[0241] like Figure 1 The diagram shown is a schematic 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, the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, sixth lens L6, first side of color filter S13, second side of color filter S14, first side of protective glass S15, second side of protective glass S16, and imaging plane IMA.

[0243] The first lens L1 has positive optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has negative optical power, its first side surface S3 is concave, and its second side surface S4 is concave. The third lens L3 has positive optical power, its first side surface S6 is concave, and its second side surface S7 is convex. The fourth lens L4 has positive optical power, its first side surface S8 is convex, and its second side surface S9 is convex. The fifth lens L5 has negative optical power, its first side surface S9 is concave, and its second side surface S10 is convex. The sixth lens L6 has negative optical power, its first side surface S11 is concave, and its second side surface S12 is convex. Light from the first side passes sequentially through surfaces S1 to S16 and is finally imaged onto the imaging plane IMA. Since the fourth lens L4 and the fifth lens L5 are cemented together to form a cemented 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 16.429mm, the maximum field of view (FOV) of the optical lens is 32.080°, and the total length (TTL) of the optical lens is 31.677mm.

[0245] Table 1 shows the basic structural parameters of the optical lens in Example 1, where the units for radius of curvature and thickness / distance are millimeters (mm).

[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 2Fig. 2 shows a schematic diagram of the optical lens structure of Example 2.

[0250] As shown in Fig. 2, the optical lens comprises, in order from the first side to the second side: a first lens L1, a second lens L2, a stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a first side surface S13 of a color filter, a second side surface S14 of the color filter, a first side surface S15 of a protection glass, a second side surface S16 of the protection glass, and an imaging surface IMA. Figure 2

[0251] The first lens L1 has positive refractive 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 refractive 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 refractive 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 refractive 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 refractive 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 refractive power, the first side surface S11 of the sixth lens is concave, and the second side surface S12 of the sixth lens is convex. Light from the first side sequentially passes through the surfaces S1 to S16 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 structure parameter table of the optical lens of Example 2, wherein the units of the radius of curvature Radius and the thickness Thickness / distance are 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 Three

[0257] As shown in Fig. 2, the optical lens comprises, in order from the first side to the second side: a first lens L1, a second lens L2, a stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a first side surface S13 of a color filter, a second side surface S14 of the color filter, a first side surface S15 of a protection glass, a second side surface S16 of the protection glass, and an imaging surface IMA. Figure 3

[0258] As shown in Fig. 2, the optical lens comprises, in order from the first side to the second side: a first lens L1, a second lens L2, a stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a first side surface S13 of a color filter, a second side surface S14 of the color filter, a first side surface S15 of a protection glass, a second side surface S16 of the protection glass, and an imaging surface IMA. Figure 3 ​​As shown, the optical lens comprises, in order from the first side to the second side: a first lens L1, a second lens L2, a stop 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 protection glass, a second side surface S16 of the protection glass, and an imaging surface IMA.

[0259] The first lens L1 has positive refractive 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 refractive 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 refractive 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 refractive 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 refractive 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 refractive power, the first side surface S11 of the sixth lens is concave, and the second side surface S12 of the sixth lens is convex. Light from the first side sequentially passes through each surface S1 to S16 and is finally imaged on the imaging surface IMA. Since the fourth lens L4 and the fifth lens L5 are cemented to form a double-cemented 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 Three, wherein the units of the radius of curvature Radius and the thickness Thickness / distance are 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 Four

[0265] As Figure 4 shown, it is a schematic diagram of the optical lens structure of Example Four.

[0266] As Figure 4As shown, the optical lens comprises, in order from the first side to the second side: a first lens L1, a second lens L2, a stop 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 protection glass, a second side surface S16 of the protection glass, and an imaging surface IMA.

[0267] The first lens L1 has positive refractive 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 refractive 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 refractive 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 refractive 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 refractive 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 refractive power, the first side surface S11 of the sixth lens is concave, and the second side surface S12 of the sixth lens is convex. Light from the first side sequentially passes through each surface S1 to S16 and is finally imaged on the imaging surface IMA. Since the fourth lens L4 and the fifth lens L5 are cemented to form a double-cemented 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 structure parameter table of the optical lens of Example Four, wherein the units of the radius of curvature Radius and the thickness Thickness / distance are 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 Five

[0273] As Figure 5 shown, it is a schematic diagram of the optical lens structure of Example Five.

[0274] As Figure 5As shown, the optical lens comprises, in order from the first side to the second side: a first lens L1, a second lens L2, a stop 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 protection glass, a second side surface S16 of the protection glass, and an imaging surface IMA.

[0275] The first lens L1 has positive refractive 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 refractive 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 refractive 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 refractive 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 refractive 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 refractive power, the first side surface S11 of the sixth lens is concave, and the second side surface S12 of the sixth lens is convex. Light from the first side sequentially passes through each surface S1 to S16 and is finally imaged on the imaging surface IMA. Since the fourth lens L4 and the fifth lens L5 are cemented to form a double-cemented 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 Five, wherein the units of the radius of curvature Radius and the thickness Thickness / distance are 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 Six

[0281] As Figure 6 shown, it is a schematic diagram of the optical lens structure of Example Six.

[0282] As Figure 6As shown, the optical lens comprises, in order from the first side to the second side: a first lens L1, a second lens L2, a stop 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 protection glass, a second side surface S16 of the protection glass, and an imaging surface IMA.

[0283] The first lens L1 has positive refractive 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 refractive 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 refractive 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 refractive 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 refractive 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 refractive power, the first side surface S11 of the sixth lens is concave, and the second side surface S12 of the sixth lens is convex. Light from the first side sequentially passes through each surface S1 to S16 and is finally imaged on the imaging surface IMA. Since the fourth lens L4 and the fifth lens L5 are cemented to form a double-cemented 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 Six, wherein the units of the radius of curvature Radius and the thickness Thickness / distance are 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 Seven

[0289] As Figure 7 shown, it is a schematic diagram of the optical lens structure of Example Seven.

[0290] As Figure 7As shown, the optical lens comprises, in order from the first side to the second side: a first lens L1, a second lens L2, a stop 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 protection glass, a second side surface S16 of the protection glass, and an imaging surface IMA.

[0291] The first lens L1 has positive refractive 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 refractive 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 refractive 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 refractive 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 refractive 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 refractive power, the first side surface S11 of the sixth lens is concave, and the second side surface S12 of the sixth lens is concave. Light from the first side sequentially passes through each surface S1 to S16 and is finally imaged on the imaging surface IMA. Since the fourth lens L4 and the fifth lens L5 are cemented to form a double-cemented 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 Seven, wherein the units of the radius of curvature Radius and the thickness Thickness / distance are 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 Eight

[0297] As Figure 8 shown, it is a schematic diagram of the optical lens structure of Example Eight.

[0298] As Figure 8As shown, the optical lens includes, from the first side to the second side, the following components in sequence: first lens L1, second lens L2, aperture stop STO, third lens L3, fourth lens L4, fifth lens L5, sixth lens L6, first side of color filter S13, second side of color filter S14, first side of protective glass S15, second side of protective glass S16, and imaging plane IMA.

[0299] The first lens L1 has positive optical power, with its first side surface S1 being convex and its second side surface S2 being concave. The second lens L2 has negative optical power, with its first side surface S3 being concave and its second side surface S4 being concave. The third lens L3 has positive optical power, with its first side surface S6 being convex and its second side surface S7 being convex. The fourth lens L4 has positive optical power, with its first side surface S8 being convex and its second side surface S9 being convex. The fifth lens L5 has negative optical power, with its first side surface S9 being concave and its second side surface S10 being convex. The sixth lens L6 has negative optical power, with its first side surface S11 being concave and its second side surface S12 being concave. Light from the first side passes sequentially through surfaces S1 to S16 and is finally imaged onto the imaging plane IMA. Since the fourth lens L4 and the fifth lens L5 are cemented together to form a cemented 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 15.980mm, the maximum field of view (FOV) of the optical lens is 32.080°, and the total length (TTL) of the optical lens is 29.876mm.

[0301] Table 8 shows the basic structural parameters of the optical lens of Example 8, where the units for radius of curvature (Radius) and thickness (Thickness / Distance) are millimeters (mm).

[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 diagram shown is a schematic of the optical lens structure of Example 9.

[0306] like Figure 9As shown, the optical lens comprises, in order from the first side to the second side: a first lens L1, a second lens L2, a diaphragm 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 protection glass, a second side surface S16 of the protection glass, and an imaging surface IMA.

[0307] The first lens L1 has positive refractive 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 refractive 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 refractive 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 refractive 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 refractive 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 refractive power, the first side surface S11 of the sixth lens is concave, and the second side surface S12 of the sixth lens is convex. Light from the first side sequentially passes through each surface S1 to S16 and is finally imaged on the imaging surface IMA. Since the fourth lens L4 and the fifth lens L5 are cemented to form a double-cemented 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 Nine, wherein the units of the radius of curvature Radius and the thickness Thickness / distance are 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 Ten

[0313] As Figure 10 shown, it is a schematic diagram of the optical lens structure of Example Ten.

[0314] As Figure 10As shown, the optical lens comprises, in order from the first side to the second side: a first lens L1, a second lens L2, a diaphragm 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 protection glass, a second side surface S16 of the protection glass, and an imaging surface IMA.

[0315] The first lens L1 has positive refractive 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 refractive 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 refractive 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 refractive 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 refractive 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 refractive power, the first side surface S11 of the sixth lens is concave, and the second side surface S12 of the sixth lens is convex. Light from the first side sequentially passes through each surface S1 to S16 and is finally imaged on the imaging surface IMA. Since the fourth lens L4 and the fifth lens L5 are cemented to form a double-cemented 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 structure parameter table of the optical lens of example ten, wherein the units of the radius of curvature Radius and the thickness Thickness / distance are 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 eleven

[0321] As Figure 11 shown, it is a schematic diagram of the optical lens structure of example eleven.

[0322] As Figure 11As shown, the optical lens comprises, in order from the first side to the second side: a first lens L1, a second lens L2, a stop 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 protection glass, a second side surface S16 of the protection glass, and an imaging surface IMA.

[0323] The first lens L1 has positive refractive 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 refractive 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 refractive 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 refractive 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 refractive 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 refractive power, the first side surface S11 of the sixth lens is convex, and the second side surface S12 of the sixth lens is concave. Light from the first side sequentially passes through each surface S1 to S16 and is finally imaged on the imaging surface IMA. Since the fourth lens L4 and the fifth lens L5 are cemented to form a double-cemented 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 Eleven, wherein the units of the radius of curvature Radius and the thickness Thickness / distance are 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 Twelve

[0329] As Figure 12 shown, it is a schematic diagram of the optical lens structure of Example Twelve.

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

[0331] The first lens L1 has positive refractive 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 refractive 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 refractive 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 refractive 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 refractive 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 refractive power, the first side surface S11 of the sixth lens is convex, and the second side surface S12 of the sixth lens is concave. Light from the first side sequentially passes through each surface S1 to S16 and is finally imaged on the imaging surface IMA. Since the fourth lens L4 and the fifth lens L5 are cemented to form a double cemented 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 structure parameter table of the optical lens of example twelve, wherein the units of the radius of curvature Radius and the thickness Thickness / distance are 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 one to twelve 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 lens of examples one to twelve, the effective focal lengths F1 to F6 of each lens, etc. (unit: millimeter).

[0341]

[0342]

[0343]

[0344] Table 14

[0345] It is apparent that the above-described embodiments are merely some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application, without making creative efforts, shall fall within the scope of the present application.

[0346] It is to be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components and / or combinations thereof, but do not preclude the presence or addition of one or more other features, steps, operations, devices, components and / or combinations thereof.

[0347] It is to be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components and / or combinations thereof, but do not preclude the presence or addition of one or more other features, steps, operations, devices, components and / or combinations thereof.

[0348] The preferred embodiments of the present application have been described above with the aid of drawing figures, and are not limited to those embodiments; instead, they will include, in addition to the above-described embodiments, all embodiments that are equivalent in whole or in part to the embodiments described and illustrated above, and which fall within the scope of the present application. Accordingly, the scope of the present application should be determined by the following claims.

Claims

1. An optical lens, characterized in that, The optical lens consists of six lenses with optical power, and the six lenses with optical power are arranged in the following order from the first side to the second side: A first lens having positive optical power, wherein the first side surface of the first lens is a convex surface; A second lens with negative optical power, wherein the first side surface of the second lens is concave and the second side surface is concave; A third lens having positive optical power, wherein the second side surface of the third lens is convex; A fourth lens with optical power, wherein the first side surface of the fourth lens is convex; A fifth lens with optical power; A sixth lens with negative optical power; The fourth lens and the fifth lens are cemented together to form a cemented doublet lens; The radius of curvature R10 of the second side of the fifth lens and the center thickness d9 of the fifth lens satisfy: |R10 / d9|≥5.2; the image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens and the radian value θ of the maximum field of view of the optical lens satisfy: |(HF*θ) / (F*θ)|≤0.

04.

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

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

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

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

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 convex.

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 concave.

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

9. The optical lens according to claim 1, characterized in that, 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.

10. The optical lens according to claim 1, characterized in that, The fifth lens has positive optical power, and the first side of the fifth lens is convex and the second side is concave.

11. The optical lens according to claim 1, characterized in that, The first side of the sixth lens is concave, and the second side is convex.

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

13. The optical lens according to claim 1, characterized in that, The first side of the sixth lens is convex, and the second side is concave.

14. The optical lens according to claim 1, characterized in that, The optical lens also includes an aperture stop, which is disposed between the second lens and the third lens.

15. The optical lens according to any one of claims 1 to 14, characterized in that, The total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens to the center of the imaging surface of the optical lens, satisfies the following condition with respect to the total focal length F of the optical lens: TTL / F≤4.

16. The optical lens according to any one of claims 1 to 14, characterized in that, The total focal length F of the optical lens, the radian value θ of the maximum field of view of the optical lens, and the maximum aperture D of the first side of the first lens satisfy the following relationship: (F*θ) / D≥0.

2.

17. The optical lens according to any one of claims 1 to 14, characterized in that, The maximum aperture D of the first side 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.

18. The optical lens according to any one of claims 1 to 14, characterized in that, The maximum aperture D of the first side of the first lens, the image height H corresponding to the maximum field of view of the optical lens, and the total focal length F of the optical lens satisfy the following relationship: D / H / F≤0.

2.

19. The optical lens according to any one of claims 1 to 14, characterized in that, The total focal length F of the optical lens and the radian value θ of the maximum field of view of the optical lens satisfy the following condition: F / θ≤30.

20. The optical lens according to any one of claims 1 to 14, characterized in that, The total focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy the following condition: F / ENPD≤3.

21. The optical lens according to any one of claims 1 to 14, characterized in that, The image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the following condition: 0.4≤(H / 2) / (F*tan(θ / 2))≤2.

22. The optical lens according to any one of claims 1 to 14, characterized in that, The radius of curvature R4 of the second side surface of the second lens and the radius of curvature R5 of the first side surface of the third lens satisfy the following condition: |R4 / R5|≤20.

23. The optical lens according to any one of claims 1 to 14, characterized in that, The radius of curvature R10 of the second side surface of the fifth lens and the radius of curvature R11 of the first side surface of the sixth lens satisfy the following condition: |R10 / R11|≥4.

3.

24. The optical lens according to any one of claims 1 to 14, characterized in that, The focal length F6 of the sixth lens satisfies the following relationship with the total focal length F of the optical lens: F6 / F≥-7.

25. The optical lens according to any one of claims 1 to 14, characterized in that, The focal length F2 of the second lens and the focal length F3 of the third lens satisfy the following condition: -5≤F2 / F3≤-0.

02.

26. The optical lens according to any one of claims 1 to 14, characterized in that, The total focal length F of the optical lens, the radius of curvature R3 of the first side of the second lens, and the radius of curvature R4 of the second side of the second lens satisfy the following relationship: |F / R3|+|F / R4|≤8.

27. The optical lens according to any one of claims 1 to 14, characterized in that, The air gap d7 between the third lens and the fourth lens satisfies the following condition with respect to the optical back focal length of the optical lens, i.e., the distance BFL from the center of the second side of the last lens of the optical lens to the center of the imaging plane: (d7*BFL) / (d7+BFL)≤1.

28. The optical lens according to any one of claims 1 to 14, characterized in that, The radius of curvature R6 of the second side surface of the third lens satisfies the following relationship with the total focal length F of the optical lens: |R6 / F|≤10.

29. The optical lens according to any one of claims 1 to 14, characterized in that, The radius of curvature R7 of the first side of the fourth lens satisfies the following relationship with the total focal length F of the optical lens: R7 / F≤7.

30. The optical lens according to any one of claims 1 to 14, characterized in that, The radius of curvature R10 of the second side of the fifth lens satisfies the following relationship with the total focal length F of the optical lens: |R10 / F|≥1.

2.

31. The optical lens according to any one of claims 1 to 14, characterized in that, The radius of curvature R11 of the first side of the sixth lens satisfies the following relationship with the total focal length F of the optical lens: |R11 / F|≤5.

32. The optical lens according to any one of claims 1 to 14, characterized in that, The radius of curvature R10 of the second side of the fifth lens and the total optical length of the optical lens, i.e. the distance TTL from the center of the first side of the first lens to the center of the imaging surface of the optical lens, satisfy the following condition: |R10 / TTL|≥0.

8.

33. The optical lens according to any one of claims 1 to 14, characterized in that, The center thickness d6 of the third lens and the total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens to the center of the imaging surface of the optical lens, satisfy the following condition: d6 / TTL≥0.

02.

34. The optical lens according to any one of claims 1 to 14, characterized in that, The total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens to the center of the imaging surface of the optical lens, satisfies the following condition with respect to the center thickness d11 of the sixth lens: TTL / d11≥6.

35. The optical lens according to any one of claims 1 to 14, characterized in that, 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, i.e., the distance TTL from the center of the first side of the first lens to the center of the imaging surface of the optical lens, satisfy the following condition: (d8+d9) / TTL≥0.

05.

36. The optical lens according to any one of claims 1 to 14, characterized in that, 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, i.e., the distance TTL from the center of the first side of the first lens to the center of the imaging surface of the optical lens, satisfy the following: |(d26-d6) / TTL|≤0.

15.

37. The optical lens according to any one of claims 1 to 14, characterized in that, The center thickness d3 of the second lens and the center thickness d6 of the third lens satisfy the condition: 0.2 ≤ d3 / d6.

38. The optical lens according to any one of claims 1 to 14, characterized in that, 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 the following condition: |(d26-d6) / R5|≤0.

4.

39. The optical lens according to any one of claims 1 to 14, characterized in that, The maximum aperture D of the first side of the first lens and the radius of curvature R1 of the first side of the first lens satisfy the following condition: D / R1≥0.

05.

40. The optical lens according to any one of claims 1 to 14, characterized in that, The maximum effective aperture D7 of the first side of the fourth lens corresponding to the maximum field of view of the optical lens, the radius of curvature R7 of the first side of the fourth lens, and the sag SAG7 of the first side of the fourth lens satisfy the following: arctan(D7 / (R7-SAG7))≥0.

2.

41. The optical lens according to any one of claims 1 to 14, characterized in that, The radius of curvature R10 of the second side of the fifth lens, the center thickness d8 of the fourth lens, and the center thickness d9 of the fifth lens satisfy the following condition: |R10 / (d8+d9)|≥2.

5.

42. The optical lens according to any one of claims 1 to 14, characterized in that, The radius of curvature R12 of the second side of the sixth lens and the center thickness d11 of the sixth lens satisfy the following condition: |R12 / d11|≤55.

43. The optical lens according to any one of claims 1 to 14, characterized in that, The radius of curvature R11 of the first side surface of the sixth lens and the radius of curvature R12 of the second side surface of the sixth lens satisfy the following condition: |R11 / R12|≥0.

1.

44. The optical lens according to any one of claims 1 to 14, characterized in that, The radius of curvature R10 of the second side of the fifth lens and the radius of curvature R11 of the first side of the sixth lens satisfy the following condition: 11.383 ≥ |R10 / R11| ≥ 4.

45.

45. The optical lens according to any one of claims 1 to 14, characterized in that, The radius of curvature R10 of the second side of the fifth lens and the radius of curvature R11 of the first side of the sixth lens satisfy the following condition: 4.500≤|R10 / R11|≤11.

383.

46. ​​The optical lens according to any one of claims 1 to 14, characterized in that, The radius of curvature R10 of the second side surface of the fifth lens and the total optical length of the optical lens, i.e. the distance TTL from the center of the first side of the first lens to the center of the imaging surface of the optical lens, satisfy the following condition: 3.900≥|R10 / TTL|≥0.

85.

47. The optical lens according to any one of claims 1 to 14, characterized in that, The radius of curvature R10 of the second side of the fifth lens and the total optical length of the optical lens, i.e. the distance TTL from the center of the first side of the first lens to the center of the imaging surface of the optical lens, satisfy the following condition: 0.877≤|R10 / TTL|≤3.

900.

48. The optical lens according to any one of claims 1 to 14, characterized in that, The radius of curvature R10 of the second side of the fifth lens satisfies the following relationship with the focal length F of the optical lens: 6.884 ≥ |R10 / F| ≥ 1.

5.

49. The optical lens according to any one of claims 1 to 14, characterized in that, The radius of curvature R10 of the second side of the fifth lens satisfies the following relationship with the total focal length F of the optical lens: 1.631≤|R10 / F|≤6.

884.

50. The optical lens according to any one of claims 1 to 14, characterized in that, The radius of curvature R10 of the second side of the fifth lens, the center thickness d8 of the fourth lens, and the center thickness d9 of the fifth lens satisfy the following: 16.266≥|R10 / (d8+d9)|≥2.

95.

51. The optical lens according to any one of claims 1 to 14, characterized in that, The radius of curvature R10 of the second side of the fifth lens, the center thickness d8 of the fourth lens, and the center thickness d9 of the fifth lens satisfy the following: 16.266≥|R10 / (d8+d9)|≥2.

927.

52. The optical lens according to any one of claims 1 to 14, characterized in that, The radius of curvature R10 of the second side of the fifth lens, the center thickness d8 of the fourth lens, and the center thickness d9 of the fifth lens satisfy the following: 16.266≥|R10 / (d8+d9)|≥3.

2.

53. The optical lens according to any one of claims 1 to 14, characterized in that, The radius of curvature R10 of the second side of the fifth lens and the center thickness d9 of the fifth lens satisfy the following condition: |R10 / d9|≥5.

3.

54. The optical lens according to any one of claims 1 to 14, characterized in that, The radius of curvature R10 of the second side of the fifth lens and the center thickness d9 of the fifth lens satisfy the following condition: 37.004 ≥ |R10 / d9| ≥ 5.

363.

55. The optical lens according to any one of claims 1 to 14, characterized in that, The radius of curvature R10 of the second side of the fifth lens and the center thickness d9 of the fifth lens satisfy the following condition: 37.004≥|R10 / d9|≥6.

56. The optical lens according to any one of claims 1 to 14, characterized in that, The total focal length F of the optical lens and the maximum field of view θ of the optical lens satisfy the following relationship: 25≤F / θ≤29.

5.

57. The optical lens according to any one of claims 1 to 14, characterized in that, The total focal length F of the optical lens and the radian value θ of the maximum field of view of the optical lens satisfy the following condition: 24.408≤F / θ≤29.

342.

58. The optical lens according to any one of claims 1 to 14, characterized in that, The radius of curvature R12 of the second side surface of the sixth lens and the center thickness d11 of the sixth lens satisfy the following condition: |R12 / d11|≤22.

59. The optical lens according to any one of claims 1 to 14, characterized in that, The radius of curvature R12 of the second side of the sixth lens and the center thickness d11 of the sixth lens satisfy the following condition: 6.459≤|R12 / d11|≤52.

14.

60. The optical lens according to any one of claims 1 to 14, characterized in that, The radius of curvature R12 of the second side of the sixth lens and the center thickness d11 of the sixth lens satisfy the following condition: 6.459≤|R12 / d11|≤18.

5.

61. The optical lens according to any one of claims 1 to 14, characterized in that, The radius of curvature R11 of the first side surface of the sixth lens and the radius of curvature R12 of the second side surface of the sixth lens satisfy the following condition: 1.528 ≥ |R11 / R12| ≥ 0.

25.

62. The optical lens according to any one of claims 1 to 14, characterized in that, The radius of curvature R11 of the first side surface of the sixth lens and the radius of curvature R12 of the second side surface of the sixth lens satisfy the following condition: 1.528 ≥ |R11 / R12| ≥ 0.

15.

63. The optical lens according to any one of claims 1 to 14, characterized in that, The radius of curvature R11 of the first side surface of the sixth lens and the radius of curvature R12 of the second side surface of the sixth lens satisfy the following condition: 1.528 ≥ |R11 / R12| ≥ 0.

32.

64. The optical lens according to any one of claims 1 to 14, characterized in that, 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, i.e., the distance TTL from the center of the first side of the first lens to the center of the imaging surface of the optical lens, satisfy the following: |(d26-d6) / TTL|≤0.

05.

65. The optical lens according to any one of claims 1 to 14, characterized in that, 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, i.e., the distance TTL from the center of the first side of the first lens to the center of the imaging surface of the optical lens, satisfy the following condition: 0.003≤|(d26-d6) / TTL|≤0.

157.

66. The optical lens according to any one of claims 1 to 14, characterized in that, 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, i.e., the distance TTL from the center of the first side of the first lens to the center of the imaging surface of the optical lens, satisfy the following condition: 0.003≤|(d26-d6) / TTL|≤0.

01.

67. The optical lens according to any one of claims 1 to 14, characterized in that, The center thickness d3 of the second lens and the center thickness d6 of the third lens satisfy the following condition: 0.3 ≤ d3 / d6 ≤ 1.

8.

68. The optical lens according to any one of claims 1 to 14, characterized in that, The center thickness d3 of the second lens and the center thickness d6 of the third lens satisfy the following condition: 0.369≤d3 / d6≤1.

390.

69. The optical lens according to any one of claims 1 to 14, characterized in that, The center thickness d3 of the second lens and the center thickness d6 of the third lens satisfy the following condition: 0.38 ≤ |d3 / d6| ≤ 1.

2.

70. The optical lens according to any one of claims 1 to 14, characterized in that, 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 the following condition: |(d26-d6) / R5|≤0.

05.

71. The optical lens according to any one of claims 1 to 14, characterized in that, 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 the following condition: 0.001≤|(d26-d6) / R5|≤0.

339.

72. The optical lens according to any one of claims 1 to 14, characterized in that, 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 the following condition: (d26-d6) / R5|≤0.

03.

73. The optical lens according to any one of claims 1 to 14, characterized in that, The optical lens satisfies at least one of the following conditions: The total optical length of the optical lens, i.e. the distance TTL from the center of the first side of the first lens to the center of the imaging plane of the optical lens, satisfies the following condition with respect to the total focal length F of the optical lens: 1.685≤TTL / F≤3. The total focal length F of the optical lens, the radian value θ of the maximum field of view of the optical lens, and the maximum light-transmitting aperture D of the first side of the first lens satisfy the following condition: 0.978 ≥ (F*θ) / D ≥ 0.

4. The maximum aperture D of the first side 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≤0.05; The maximum aperture D of the first side of the first lens, the image height H corresponding to the maximum field of view of the optical lens, and the total focal length F of the optical lens satisfy the following condition: 0.063≤D / H / F≤0.1; The total focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy the following relationship: 2.000≤F / ENPD≤3; The image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the following condition: 0.8≤(H / 2) / (F*tan(θ / 2))≤1.5; The radius of curvature R4 of the second side surface of the second lens and the radius of curvature R5 of the first side surface of the third lens satisfy the following condition: |R4 / R5|≤10; The focal length F6 of the sixth lens satisfies the following relationship with the total focal length F of the optical lens: -5≤F6 / F≤-0.2; The focal length F2 of the second lens and the focal length F3 of the third lens satisfy the following condition: -3≤F2 / F3≤-0.05; The total focal length F of the optical lens, the radius of curvature R3 of the first side of the second lens, and the radius of curvature R4 of the second side of the second lens satisfy the following condition: 1.172≤|F / R3|+|F / R4|≤6; The air gap d7 between the third lens and the fourth lens satisfies the following condition with respect to the optical back focal length of the optical lens, i.e., the distance BFL from the center of the second side of the last lens of the optical lens to the center of the imaging plane: (d7*BFL) / (d7+BFL)≤0.

5. The radius of curvature R6 of the second side surface of the third lens satisfies the following relationship with the total focal length F of the optical lens: |R6 / F|≤6; The radius of curvature R7 of the first side of the fourth lens satisfies the following relationship with the total focal length F of the optical lens: R7 / F≤5; The radius of curvature R11 of the first side of the sixth lens satisfies the following relationship with the total focal length F of the optical lens: |R11 / F|≤3; The central thickness d6 of the third lens and the total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens to the center of the imaging surface of the optical lens, satisfy the following condition: 0.204≥d6 / TTL≥0.04; The total optical length of the optical lens, i.e., the center distance TTL from the center of the first side of the first lens to the center of the imaging surface of the optical lens, satisfies the following condition with respect to the center thickness d11 of the sixth lens: 32.208≥TTL / d11≥9; 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, i.e., the distance TTL from the center of the first side of the first lens to the center of the imaging plane of the optical lens, satisfy the following condition: 0.318≥(d8+d9) / TTL≥0.1; The maximum aperture D of the first side of the first lens and the radius of curvature R1 of the first side of the first lens satisfy the following condition: 0.883 ≥ D / R1 ≥ 0.2; The maximum effective aperture D7 of the first side of the fourth lens corresponding to the maximum field of view of the optical lens, the radius of curvature R7 of the first side of the fourth lens, and the sag SAG7 of the first side of the fourth lens satisfy the following: arctan(D7 / (R7-SAG7))≥0.

4.

74. The optical lens according to any one of claims 1 to 14, characterized in that, The optical lens satisfies at least one of the following conditions: The total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens to the center of the imaging plane of the optical lens, satisfies the following condition with respect to the total focal length F of the optical lens: 1.685≤TTL / F≤2.

042. The total focal length F of the optical lens, the radian value θ of the maximum field of view of the optical lens, and the maximum light-transmitting aperture D of the first side of the first lens satisfy the following condition: 0.871≤(F*θ) / D≤0.

978. The maximum aperture D of the first side 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: 0.031≤D / H / FOV≤0.036; The maximum aperture D of the first side of the first lens, the image height H corresponding to the maximum field of view of the optical lens, and the total focal length F of the optical lens satisfy the following condition: 0.063≤D / H / F≤0.072; The image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the following condition: 0.004≤|(HF*θ) / (F*θ)|≤0.025; The total focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy the following condition: 2.000≤F / ENPD≤2.5; The image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian value θ of the maximum field of view of the optical lens satisfy the following condition: 0.949≤(H / 2) / (F*tan(θ / 2))≤0.995; The radius of curvature R4 of the second side surface of the second lens and the radius of curvature R5 of the first side surface of the third lens satisfy the following condition: 0.128 ≤ |R4 / R5| ≤ 1.973; The focal length F6 of the sixth lens satisfies the following relationship with the total focal length F of the optical lens: -2.311≤F6 / F≤-0.621; The focal length F2 of the second lens and the focal length F3 of the third lens satisfy the following condition: -1.187 ≤ F2 / F3 ≤ -0.170; The total focal length F of the optical lens, the radius of curvature R3 of the first side of the second lens, and the radius of curvature R4 of the second side of the second lens satisfy the following condition: 1.172≤|F / R3|+|F / R4|≤2.795; The air gap d7 between the third lens and the fourth lens satisfies the following condition with respect to the optical back focal length of the optical lens, i.e., the distance BFL from the center of the second side of the last lens of the optical lens to the center of the imaging plane: 0.09≤(d7*BFL) / (d7+BFL)≤0.189; The radius of curvature R6 of the second side surface of the third lens satisfies the following relationship with the focal length F of the optical lens: 0.449≤|R6 / F|≤2.187; The radius of curvature R7 of the first side of the fourth lens and the total focal length F of the optical lens satisfy the following condition: 0.454≤R7 / F≤0.967; The radius of curvature R11 of the first side of the sixth lens satisfies the following relationship with the total focal length F of the optical lens: 0.274≤|R11 / F|≤0.784; The center thickness d6 of the third lens and the total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens to the center of the imaging surface of the optical lens, satisfy the following condition: 0.204≥d6 / TTL≥0.073; The total optical length of the optical lens, i.e., the distance TTL from the center of the first side of the first lens to the center of the imaging plane of the optical lens, satisfies the following condition with respect to the center thickness d11 of the sixth lens: 32.208≥TTL / d11≥12.224; 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, i.e., the distance TTL from the center of the first side of the first lens to the center of the imaging plane of the optical lens, satisfy the following condition: 0.318≥(d8+d9) / TTL≥0.210; The maximum aperture D of the first side of the first lens and the radius of curvature R1 of the first side of the first lens satisfy the following condition: 0.883 ≥ D / R1 ≥ 0.527; The maximum effective aperture D7 of the first side of the fourth lens corresponding to the maximum field of view of the optical lens, the radius of curvature R7 of the first side of the fourth lens, and the sag SAG7 of the first side of the fourth lens satisfy the following condition: 1.055≥arctan(D7 / (R7-SAG7))≥0.

586.

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

Images