Optical lens and electronic device with same

Abstract

The application provides an optical lens and an electronic device with the same. The optical lens comprises: a first lens, the first lens having positive refractive power, a first side of the first lens being a convex surface; a second lens, the second lens having negative refractive power, at least one of a first side of the second lens and a second side of the second lens being a concave surface; a third lens, the third lens having positive refractive power, a second side of the third lens being a convex surface; a fourth lens, the fourth lens having positive refractive power, a first side of the fourth lens being a convex surface, and a second side of the fourth lens being a convex surface; and a fifth lens, the fifth lens having negative refractive power, a first side of the fifth lens being a concave surface, and a second side of the fifth lens being a convex surface. The application solves the problem that the optical lens in the prior art is difficult to have small aberration, high resolving power, miniaturization, long back focus and small distortion simultaneously.

Description

Technical Field

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

[0002] With the development of intelligent headlights, the demands for resolution of projection optical lenses are constantly increasing to meet the needs of more user-friendly human-vehicle interaction and audio-visual entertainment. Existing optical lenses suffer from severe aberrations such as chromatic aberration, astigmatism, and distortion, resulting in low resolution, poor rendering of image details, and a subpar user experience. Furthermore, due to the need to improve image quality, optical lenses employ a large number of lenses. To meet the installation requirements in confined spaces, the back focal length of the optical lenses is relatively short when miniaturizing them, which cannot provide sufficient space for focusing or installation during module assembly.

[0003] In other words, existing optical lenses suffer from the problem of not being able to simultaneously achieve small aberrations, high resolution, miniaturization, long back focal length, and small distortion. Summary of the Invention

[0004] The main objective of this invention is to provide an optical lens and an electronic device having the same, so as to solve the problem that it is difficult to simultaneously achieve small aberrations, high resolution, miniaturization, long back focal length, and small distortion in existing optical lenses.

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

[0006] Furthermore, the second side surface of the first lens is either convex, concave, or flat.

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

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

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

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

[0011] Furthermore, the first side surface of the second lens is concave, and the second side surface of the second lens is planar.

[0012] Furthermore, the first side surface of the third lens is convex.

[0013] Furthermore, the first side surface of the third lens is concave.

[0014] Furthermore, the first side surface of the third lens is a plane.

[0015] Furthermore, the first lens is an aspherical lens.

[0016] Furthermore, both the first and third lenses are aspherical lenses.

[0017] Furthermore, the optical lens also has an aperture stop located between the second lens and the third lens.

[0018] Furthermore, the total focal length F of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the following relationship: F / H≥1.

[0019] Furthermore, the total focal length F of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: F / H≥2.8.

[0020] Furthermore, the total focal length F of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: F / H≥3.5.

[0021] Furthermore, the focal length F1 of the first lens and the total focal length F of the optical lens satisfy the following condition: 0.5≤F1 / F≤9.

[0022] Furthermore, the focal length F1 of the first lens and the total focal length F of the optical lens satisfy the following condition: 1.1≤F1 / F≤6.5.

[0023] Furthermore, the focal length F1 of the first lens and the total focal length F of the optical lens satisfy the following condition: 1.2≤F1 / F≤7.

[0024] Furthermore, the focal length F3 of the third lens and the focal length F4 of the fourth lens satisfy the following condition: |F3 / F4|≤3.

[0025] Furthermore, the focal length F3 of the third lens and the focal length F4 of the fourth lens satisfy the following condition: 0.5 ≤ |F3 / F4| ≤ 1.5.

[0026] Furthermore, the sagitta of the first side of the fourth lens, SAG7, and the sagitta of the second side of the fourth lens, SAG8, satisfy the following condition: 0.5 ≤ |SAG7 / SAG8| ≤ 5.

[0027] Furthermore, the sagitta SAG7 of the first side of the fourth lens and the sagitta SAG8 of the second side of the fourth lens satisfy the following condition: 0.8≤|SAG7 / SAG8|≤2.

[0028] Furthermore, the combined focal length of the fourth and fifth lenses, F45, and the overall focal length F of the optical lens satisfy the following condition: F45 / F≤6.

[0029] Furthermore, the combined focal length F45 of the fourth and fifth lenses and the overall focal length F of the optical lens satisfy the following condition: 1.2≤F45 / F≤4.

[0030] Furthermore, the focal length F1 of the first lens and the focal length F2 of the second lens satisfy the following condition: F1 / F2≤-1.

[0031] Furthermore, the focal length F1 of the first lens and the focal length F2 of the second lens satisfy the following condition: F1 / F2≤-1.2.

[0032] Furthermore, the focal length F1 of the first lens and the focal length F2 of the second lens satisfy the following condition: F1 / F2≤-1.4.

[0033] Furthermore, the radius of curvature R3 of the first side surface of the second lens and the radius of curvature R4 of the second side surface of the second lens satisfy the following condition: 0.2≤|(R3-R4) / (R3+R4)|≤3.

[0034] Furthermore, the radius of curvature R3 of the first side surface of the second lens and the radius of curvature R4 of the second side surface of the second lens satisfy the following condition: 0.5≤|(R3-R4) / (R3+R4)|≤1.5.

[0035] Furthermore, the maximum field of view angle θ of the optical lens, the total focal length F of the optical lens, and the image height H corresponding to the maximum field of view angle of the optical lens satisfy the following relationship: |(HF*θ) / (F*θ)|≤0.03.

[0036] Furthermore, the maximum field of view angle of the optical lens in radians θ, the total focal length F of the optical lens, and the image height H corresponding to the maximum field of view angle of the optical lens satisfy the following relationship: |(HF*θ) / (F*θ)|≤0.022.

[0037] Furthermore, the maximum field of view angle of the optical lens in radians θ, the total focal length F of the optical lens, and the image height H corresponding to the maximum field of view angle of the optical lens satisfy the following relationship: |(HF*θ) / (F*θ)|≤0.019.

[0038] Furthermore, the optical back focal length (BFL) and the optical total length (TTL) of the optical lens satisfy the following condition: BFL / TTL ≥ 0.35.

[0039] Furthermore, the optical back focal length (BFL) and the optical total length (TTL) of the optical lens satisfy the following condition: 0.4 ≤ BFL / TTL.

[0040] Furthermore, the optical back focal length (BFL) and the optical total length (TTL) of the optical lens satisfy the following condition: 0.4 ≤ BFL / TTL ≤ 0.6.

[0041] Furthermore, the sagitta SAG6 of the second side of the third lens and the center thickness d6 of the third lens satisfy the following condition: |arctan(SAG6 / d6)|≥0.2.

[0042] Furthermore, the sag of the second side of the third lens, SAG6, and the center thickness d6 of the third lens satisfy the following condition: |arctan(SAG6 / d6)|≥0.5.

[0043] Furthermore, the maximum subtended angle of the second side of the third lens, arctan(1 / K(S6)), satisfies: |arctan(1 / K(S6))|≥5.

[0044] Furthermore, the maximum subtended angle of the second side of the third lens, arctan(1 / K(S6)), satisfies: |arctan(1 / K(S6))|≥15.

[0045] Furthermore, the total focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy the following condition: F / ENPD≤1.8.

[0046] Furthermore, the total focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy the following condition: F / ENPD≤1.5.

[0047] Furthermore, the optical back focal length (BFL) of the optical lens and the lens group length (TL) of the optical lens satisfy the following condition: BFL / TL≥0.3.

[0048] Furthermore, the optical back focal length (BFL) of the optical lens and the lens group length (TL) of the optical lens satisfy the following condition: BFL / TL≥0.5.

[0049] Furthermore, 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: 0.5≤|F / R3|+|F / R4|≤3.

[0050] Furthermore, 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: 0.9≤|F / R3|+|F / R4|≤3.

[0051] Furthermore, 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: 1≤|F / R3|+|F / R4|≤2.

[0052] Furthermore, the maximum field of view (FOV) of the optical lens, the total focal length (F) of the optical lens, and the image height (H) corresponding to the maximum field of view of the optical lens satisfy the following condition: 35 ≤ (FOV × F) / H.

[0053] Furthermore, the maximum field of view (FOV) of the optical lens, the total focal length (F) of the optical lens, and the image height (H) corresponding to the maximum field of view of the optical lens satisfy the following relationship: 45 ≤ (FOV × F) / H.

[0054] Furthermore, the maximum field of view (FOV) of the optical lens, the total focal length (F) of the optical lens, and the image height (H) corresponding to the maximum field of view of the optical lens satisfy the following relationship: 55 ≤ (FOV × F) / H.

[0055] Furthermore, the maximum field of view angle of the optical lens in radians θ, the total focal length F of the optical lens, and the image height H corresponding to the maximum field of view angle of the optical lens satisfy the following condition: (H / 2) / (F*tan(θ / 2))≥0.5.

[0056] Furthermore, the maximum field of view angle of the optical lens in radians θ, the total focal length F of the optical lens, and the image height H corresponding to the maximum field of view angle of the optical lens satisfy the following relationship: (H / 2) / (F*tan(θ / 2))≥0.6.

[0057] Furthermore, the maximum field of view angle in radians θ of the optical lens, the total focal length F of the optical lens, and the image height H corresponding to the maximum field of view angle of the optical lens satisfy the following relationship: (H / 2) / (F*tan(θ / 2))≥0.8. Furthermore, the maximum field of view angle in radians θ of the optical lens, the total focal length F of the optical lens, and the image height H corresponding to the maximum field of view angle of the optical lens satisfy the following relationship: (H / 2) / (F*tan(θ / 2))≥0.9.

[0058] Furthermore, the radius of curvature R7 of the first side surface of the fourth lens and the radius of curvature R8 of the second side surface of the fourth lens satisfy the following condition: |R7 / R8|≥0.05.

[0059] Furthermore, the radius of curvature R7 of the first side surface of the fourth lens and the radius of curvature R8 of the second side surface of the fourth lens satisfy the following condition: |R7 / R8|≥0.2.

[0060] Furthermore, the radius of curvature R7 of the first side surface of the fourth lens and the radius of curvature R8 of the second side surface of the fourth lens satisfy the following condition: |R7 / R8|≥0.3.

[0061] Furthermore, the focal length F2 of the second lens and the focal length F3 of the third lens satisfy the condition: F2 / F3≤0.

[0062] Furthermore, the focal length F2 of the second lens and the focal length F3 of the third lens satisfy the following condition: F2 / F3≤-0.6.

[0063] Furthermore, the combined focal length F12 of the first lens and the second lens, and the total focal length F of the optical lens satisfy the following condition: F12 / F≤0.

[0064] Furthermore, the combined focal length F12 of the first lens and the second lens, and the total focal length F of the optical lens satisfy the following condition: F12 / F≤-0.005.

[0065] Furthermore, the combined focal length F12 of the first lens and the second lens, and the total focal length F of the optical lens satisfy the following condition: F12 / F≤-0.5.

[0066] Furthermore, the focal length F5 of the fifth lens and the total focal length F of the optical lens satisfy the following condition: -5≤F5 / F≤-0.5.

[0067] Furthermore, the focal length F5 of the fifth lens and the total focal length F of the optical lens satisfy the following condition: -3≤F5 / F≤-1.

[0068] Furthermore, the air gap d23 between the second lens and the third lens on the optical axis of the optical lens, the center thickness T2 of the second lens, and the center thickness T3 of the third lens satisfy the following condition: 0.1≤d23 / (T2+T3)≤2.

[0069] Furthermore, the air gap d23 between the second lens and the third lens on the optical axis of the optical lens, the center thickness T2 of the second lens, and the center thickness T3 of the third lens satisfy the following condition: 0.2≤d23 / (T2+T3)≤1.

[0070] Furthermore, the air gap d23 between the second and third lenses on the optical axis of the optical lens, the optical back focal length BFL of the optical lens, and the combined focal length F45 of the fourth and fifth lenses satisfy the following: d23*BFL / F45≥1.

[0071] Furthermore, the air gap d23 between the second and third lenses on the optical axis of the optical lens, the optical back focal length BFL of the optical lens, and the combined focal length F45 of the fourth and fifth lenses satisfy the following: d23*BFL / F45≥2.

[0072] Furthermore, the radius of curvature R1 of the first side surface of the first lens and the focal length F1 of the first lens satisfy the following condition: 0 < R1 / F1 ≤ 5.

[0073] Furthermore, the radius of curvature R1 of the first side surface of the first lens and the focal length F1 of the first lens satisfy the following condition: 0 ≤ R1 / F1 ≤ 20.

[0074] According to another aspect of the present invention, an optical lens is provided, comprising: 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 positive optical power; and a fifth lens having negative optical power; wherein the optical back focal length (BFL) and the optical total length (TTL) of the optical lens satisfy the following condition: BFL / TTL ≥ 0.35.

[0075] Furthermore, the first side surface of the first lens is a convex surface, and the second side surface of the first lens is a convex surface, a concave surface, or a plane.

[0076] Furthermore, the first side surface of the second lens is concave, and the second side surface of the second lens is also concave.

[0077] Furthermore, the first side surface of the second lens is concave, and the second side surface of the second lens is convex.

[0078] Furthermore, the first side surface of the second lens is convex, and the second side surface of the second lens is concave.

[0079] Furthermore, the first side surface of the second lens is a plane, and the second side surface of the second lens is a concave surface.

[0080] Furthermore, the first side surface of the second lens is concave, and the second side surface of the second lens is planar.

[0081] Furthermore, the first side surface of the third lens is convex, and the second side surface of the third lens is also convex.

[0082] Furthermore, the first side surface of the third lens is concave, and the second side surface of the third lens is convex.

[0083] Furthermore, the first side surface of the third lens is a plane, and the second side surface of the third lens is a convex surface.

[0084] Furthermore, the first side surface of the fourth lens is convex, and the second side surface of the fourth lens is also convex.

[0085] Furthermore, the first side surface of the fifth lens is concave, and the second side surface of the fifth lens is convex.

[0086] Furthermore, the first lens is an aspherical lens.

[0087] Furthermore, both the first and third lenses are aspherical lenses.

[0088] Furthermore, the optical lens also has an aperture stop located between the second lens and the third lens.

[0089] Furthermore, the total focal length F of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the following relationship: F / H≥1.

[0090] Furthermore, the total focal length F of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: F / H≥2.8.

[0091] Furthermore, the total focal length F of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: F / H≥3.5.

[0092] Furthermore, the focal length F1 of the first lens and the total focal length F of the optical lens satisfy the following condition: 0.5≤F1 / F≤9.

[0093] Furthermore, the focal length F1 of the first lens and the total focal length F of the optical lens satisfy the following condition: 1.1≤F1 / F≤6.5.

[0094] Furthermore, the focal length F1 of the first lens and the total focal length F of the optical lens satisfy the following condition: 1.2≤F1 / F≤7.

[0095] Furthermore, the focal length F3 of the third lens and the focal length F4 of the fourth lens satisfy the following condition: |F3 / F4|≤3.

[0096] Furthermore, the focal length F3 of the third lens and the focal length F4 of the fourth lens satisfy the following condition: 0.5 ≤ |F3 / F4| ≤ 1.5.

[0097] Furthermore, the sagitta of the first side of the fourth lens, SAG7, and the sagitta of the second side of the fourth lens, SAG8, satisfy the following condition: 0.5 ≤ |SAG7 / SAG8| ≤ 5.

[0098] Furthermore, the sagitta SAG7 of the first side of the fourth lens and the sagitta SAG8 of the second side of the fourth lens satisfy the following condition: 0.8≤|SAG7 / SAG8|≤2.

[0099] Furthermore, the combined focal length of the fourth and fifth lenses, F45, and the overall focal length F of the optical lens satisfy the following condition: F45 / F≤6.

[0100] Furthermore, the combined focal length F45 of the fourth and fifth lenses and the overall focal length F of the optical lens satisfy the following condition: 1.2≤F45 / F≤4.

[0101] Furthermore, the focal length F1 of the first lens and the focal length F2 of the second lens satisfy the following condition: F1 / F2≤-1.

[0102] Furthermore, the focal length F1 of the first lens and the focal length F2 of the second lens satisfy the following condition: F1 / F2≤-1.2.

[0103] Furthermore, the focal length F1 of the first lens and the focal length F2 of the second lens satisfy the following condition: F1 / F2≤-1.4.

[0104] Furthermore, the radius of curvature R3 of the first side surface of the second lens and the radius of curvature R4 of the second side surface of the second lens satisfy the following condition: 0.2≤|(R3-R4) / (R3+R4)|≤3.

[0105] Furthermore, the radius of curvature R3 of the first side surface of the second lens and the radius of curvature R4 of the second side surface of the second lens satisfy the following condition: 0.5≤|(R3-R4) / (R3+R4)|≤1.5.

[0106] Furthermore, the maximum field of view angle θ of the optical lens, the total focal length F of the optical lens, and the image height H corresponding to the maximum field of view angle of the optical lens satisfy the following relationship: |(HF*θ) / (F*θ)|≤0.03.

[0107] Furthermore, the maximum field of view angle of the optical lens in radians θ, the total focal length F of the optical lens, and the image height H corresponding to the maximum field of view angle of the optical lens satisfy the following relationship: |(HF*θ) / (F*θ)|≤0.022.

[0108] Furthermore, the maximum field of view angle of the optical lens in radians θ, the total focal length F of the optical lens, and the image height H corresponding to the maximum field of view angle of the optical lens satisfy the following relationship: |(HF*θ) / (F*θ)|≤0.019.

[0109] Furthermore, the optical back focal length (BFL) and the optical total length (TTL) of the optical lens satisfy the following condition: 0.4 ≤ BFL / TTL.

[0110] Furthermore, the optical back focal length (BFL) and the optical total length (TTL) of the optical lens satisfy the following condition: 0.4 ≤ BFL / TTL ≤ 0.6.

[0111] Furthermore, the sagitta SAG6 of the second side of the third lens and the center thickness d6 of the third lens satisfy the following condition: |arctan(SAG6 / d6)|≥0.2.

[0112] Furthermore, the sag of the second side of the third lens, SAG6, and the center thickness d6 of the third lens satisfy the following condition: |arctan(SAG6 / d6)|≥0.5.

[0113] Furthermore, the maximum subtended angle of the second side of the third lens, arctan(1 / K(S6)), satisfies: |arctan(1 / K(S6))|≥5.

[0114] Furthermore, the maximum subtended angle of the second side of the third lens, arctan(1 / K(S6)), satisfies: |arctan(1 / K(S6))|≥15.

[0115] Furthermore, the total focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy the following condition: F / ENPD≤1.8.

[0116] Furthermore, the total focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy the following condition: F / ENPD≤1.5.

[0117] Furthermore, the optical back focal length (BFL) of the optical lens and the lens group length (TL) of the optical lens satisfy the following condition: BFL / TL≥0.3.

[0118] Furthermore, the optical back focal length (BFL) of the optical lens and the lens group length (TL) of the optical lens satisfy the following condition: BFL / TL≥0.5.

[0119] Furthermore, 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: 0.5≤|F / R3|+|F / R4|≤3.

[0120] Furthermore, 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: 0.9≤|F / R3|+|F / R4|≤3.

[0121] Furthermore, 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: 1≤|F / R3|+|F / R4|≤2.

[0122] Furthermore, the maximum field of view (FOV) of the optical lens, the total focal length (F) of the optical lens, and the image height (H) corresponding to the maximum field of view of the optical lens satisfy the following condition: 35 ≤ (FOV × F) / H.

[0123] Furthermore, the maximum field of view (FOV) of the optical lens, the total focal length (F) of the optical lens, and the image height (H) corresponding to the maximum field of view of the optical lens satisfy the following relationship: 45 ≤ (FOV × F) / H.

[0124] Furthermore, the maximum field of view (FOV) of the optical lens, the total focal length (F) of the optical lens, and the image height (H) corresponding to the maximum field of view of the optical lens satisfy the following relationship: 55 ≤ (FOV × F) / H.

[0125] Furthermore, the maximum field of view angle of the optical lens in radians θ, the total focal length F of the optical lens, and the image height H corresponding to the maximum field of view angle of the optical lens satisfy the following condition: (H / 2) / (F*tan(θ / 2))≥0.5.

[0126] Furthermore, the maximum field of view angle of the optical lens in radians θ, the total focal length F of the optical lens, and the image height H corresponding to the maximum field of view angle of the optical lens satisfy the following relationship: (H / 2) / (F*tan(θ / 2))≥0.6.

[0127] Furthermore, the maximum field of view angle of the optical lens in radians θ, the total focal length F of the optical lens, and the image height H corresponding to the maximum field of view angle of the optical lens satisfy the following relationship: (H / 2) / (F*tan(θ / 2))≥0.8.

[0128] Furthermore, the maximum field of view angle of the optical lens in radians θ, the total focal length F of the optical lens, and the image height H corresponding to the maximum field of view angle of the optical lens satisfy the following relationship: (H / 2) / (F*tan(θ / 2))≥0.9.

[0129] Furthermore, the radius of curvature R7 of the first side surface of the fourth lens and the radius of curvature R8 of the second side surface of the fourth lens satisfy the following condition: |R7 / R8|≥0.05.

[0130] Furthermore, the radius of curvature R7 of the first side surface of the fourth lens and the radius of curvature R8 of the second side surface of the fourth lens satisfy the following condition: |R7 / R8|≥0.2.

[0131] Furthermore, the radius of curvature R7 of the first side surface of the fourth lens and the radius of curvature R8 of the second side surface of the fourth lens satisfy the following condition: |R7 / R8|≥0.3.

[0132] Furthermore, the focal length F2 of the second lens and the focal length F3 of the third lens satisfy the condition: F2 / F3≤0.

[0133] Furthermore, the focal length F2 of the second lens and the focal length F3 of the third lens satisfy the following condition: F2 / F3≤-0.6.

[0134] Furthermore, the combined focal length F12 of the first lens and the second lens, and the total focal length F of the optical lens satisfy the following condition: F12 / F≤0.

[0135] Furthermore, the combined focal length F12 of the first lens and the second lens, and the total focal length F of the optical lens satisfy the following condition: F12 / F≤-0.005.

[0136] Furthermore, the combined focal length F12 of the first lens and the second lens, and the total focal length F of the optical lens satisfy the following condition: F12 / F≤-0.5.

[0137] Furthermore, the focal length F5 of the fifth lens and the total focal length F of the optical lens satisfy the following condition: -5≤F5 / F≤-0.5.

[0138] Furthermore, the focal length F5 of the fifth lens and the total focal length F of the optical lens satisfy the following condition: -3≤F5 / F≤-1.

[0139] Furthermore, the air gap d23 between the second lens and the third lens on the optical axis of the optical lens, the center thickness T2 of the second lens, and the center thickness T3 of the third lens satisfy the following condition: 0.1≤d23 / (T2+T3)≤2.

[0140] Furthermore, the air gap d23 between the second lens and the third lens on the optical axis of the optical lens, the center thickness T2 of the second lens, and the center thickness T3 of the third lens satisfy the following condition: 0.2≤d23 / (T2+T3)≤1.

[0141] Furthermore, the air gap d23 between the second and third lenses on the optical axis of the optical lens, the optical back focal length BFL of the optical lens, and the combined focal length F45 of the fourth and fifth lenses satisfy the following: d23*BFL / F45≥1.

[0142] Furthermore, the air gap d23 between the second and third lenses on the optical axis of the optical lens, the optical back focal length BFL of the optical lens, and the combined focal length F45 of the fourth and fifth lenses satisfy the following: d23*BFL / F45≥2.

[0143] Furthermore, the radius of curvature R1 of the first side surface of the first lens and the focal length F1 of the first lens satisfy the following condition: 0 < R1 / F1 ≤ 5.

[0144] Furthermore, the radius of curvature R1 of the first side surface of the first lens and the focal length F1 of the first lens satisfy the following condition: 0 ≤ R1 / F1 ≤ 20.

[0145] According to another aspect of the present invention, an electronic device is provided, comprising the aforementioned optical lens and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

[0146] The above technical solution, by setting the first lens to have positive optical power, is beneficial for collecting light from a large field of view. By setting the first side of the first lens to be convex, it has an aesthetically pleasing appearance and is less prone to dust accumulation in actual use. Optionally, the second side of the first lens can also be convex, further compressing the beam aperture of the large field of view received by the first side of the first lens, which helps to increase light transmission and improve illumination. Alternatively, the second side of the first lens can be set to be concave, i.e., the first lens is a meniscus lens, which allows the incoming light to transition to the next lens at a smaller angle, making the entrance pupil farther away from the second principal surface, thus reducing the telecentricity of the first side and decreasing the aperture of the subsequent lens group. Of course, the second side of the first lens can also be set to be flat, which helps to converge light.

[0147] By setting the second lens to have a negative optical power, the light is further diverged, and the light refraction angle is adjusted. Optionally, both the first and second sides of the second lens are concave. The combination of two concave surfaces allows for better light divergence, and when paired with a subsequent positive lens, it reduces aberrations. The concave second side of the second lens helps to lengthen the back focal length. Alternatively, the first side of the second lens can be concave, and the second side convex. The first side of the second lens collects and converges light rays from the edge of the field of view, while the convex second side reduces the light deflection angle, smoothing the light path and reducing sensitivity. Alternatively, the first side of the second lens can be convex, and the second side concave. This collects and smooths the light rays passing through the first lens, diverging them for the subsequent lens, which helps to lengthen the back focal length. Alternatively, the first side of the second lens can be concave, and the second side flat. The concave first side of the second lens better diverges light, and when paired with a subsequent positive lens, it reduces aberrations. The flat second side of the second lens helps to lengthen the back focal length. Alternatively, the first side of the second lens can be set to be flat, and the second side to be concave. This facilitates a smooth transition of light from the first lens to the second lens and diverges the light to pass through the rear lens, thus lengthening the back focal length.

[0148] By setting the third lens to have positive optical power, light can be converged, resulting in a smooth transition of light path. Setting the second side of the third lens to be convex facilitates the convergence of light into the fourth lens, reducing the light angle and lowering the sensitivity of the rear optical system, while also lengthening the system's back focal length. Optionally, the first side of the third lens can be convex to better collect light passing through the second lens. Alternatively, the first side of the third lens can be concave to further collect light passing through the second lens, increasing light transmission. Finally, the first side of the third lens can be flat to maintain the light path passing through the second lens, reducing sensitivity and improving resolution.

[0149] By setting the fourth lens to have positive optical power, light rays can be converged and their path can be smoothly transitioned. Setting both the first and second sides of the fourth lens to be convex helps reduce sensitivity.

[0150] By setting the fifth lens to have negative optical power, it is beneficial to lengthen the back focal length. By setting the first side of the fifth lens to be concave and the second side to be convex, it collects the light passing through the fourth lens, which facilitates focusing and increases its contribution to the focusing lens group, thereby reducing the size of other lenses and lowering costs.

[0151] This application manages the relationship between the air gap between the second and third lenses and the combined focal length of the fourth and fifth lenses. This causes the light emitted from the second lens to have an upward trend, which is then pushed downwards by the rear group. Simultaneously, by controlling the fifth lens to have a negative focal length, the light converged by the optical system before the fifth lens is diverged, further extending the rear focal length. By keeping the focal lengths of the third and fourth lenses, as well as the sagitta of the first and second sides of the fourth lens, close and mutually compensating for magnification, and by controlling the first side of the first lens to be convex, a smooth light transition is achieved, improving lens resolution. At the same time, increasing the lens's focal length emphasizes the imaging effect in the central area of ​​the lens's image plane, achieving high resolution while minimizing distortion. By combining the positive and negative focal lengths of the first and second lenses to form a negative combined focal length, the focal lengths of the first and second lenses compensate for each other, mitigating the effects of high and low temperature changes and providing focal length complementarity, resulting in more stable lens performance.

[0152] Therefore, the optical lens of this application has the advantage of a long back focal length, which allows for sufficient focusing or installation space during module assembly. Furthermore, the long back focal length is beneficial for heat dissipation when used in high-temperature environments. The optical lens achieves high resolution while exhibiting low distortion, resulting in less distortion of edge patterns in actual projection scenarios and better reproduction of the projected image. Simultaneously, the optical lens has better temperature performance, exhibiting more stable performance under varying high and low temperatures. Attached Figure Description

[0153] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0154] Figure 1 A cross-sectional view of an optical lens according to Example 1 of the present invention is shown;

[0155] Figure 2 A cross-sectional view of the optical lens of Example 2 of the present invention is shown;

[0156] Figure 3A cross-sectional view of the optical lens of Example 3 of the present invention is shown;

[0157] Figure 4 A cross-sectional view of the optical lens of Example 4 of the present invention is shown;

[0158] Figure 5 A cross-sectional view of the optical lens of Example 5 of the present invention is shown;

[0159] Figure 6 A cross-sectional view of the optical lens of Example Six of the present invention is shown;

[0160] Figure 7 A cross-sectional view of the optical lens of Example Seven of the present invention is shown;

[0161] Figure 8 A cross-sectional view of the optical lens of Example 8 of the present invention is shown;

[0162] Figure 9 A cross-sectional view of the optical lens of Example Nine of the present invention is shown;

[0163] Figure 10 A cross-sectional view of the optical lens of Example 10 of the present invention is shown.

[0164] The above figures include the following reference numerals:

[0165] STO, Aperture Stop; L1, First Lens; S1, First Side of First Lens; S2, Second Side of First Lens; L2, Second Lens; S3, First Side of Second Lens; S4, Second Side of Second Lens; L3, Third Lens; S5, First Side of Third Lens; S6, Second Side of Third Lens; L4, Fourth Lens; S7, First Side of Fourth Lens; S8, Second Side of Fourth Lens; L5, Fifth Lens; S9, First Side of Fifth Lens; S10, Second Side of Fifth Lens; S11, First Side of Filter; S12, Second Side of Filter; IMA, Imaging Surface. Detailed Implementation

[0166] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0167] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0168] In this invention, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0169] It should be noted that in this specification, the terms "first," "second," "third," etc., are used only to distinguish one feature from another and do not imply any limitation on the features. Therefore, without departing from the teachings of this application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0170] In the accompanying drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are illustrated by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustrative purposes only and are not drawn strictly to scale.

[0171] In this paper, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the location of the convexity is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the location of the concaveness is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object side is called the first side surface of the lens, and the surface of each lens closest to the image side is called the second side surface of the lens. The surface shape in the paraxial region can be determined according to the judgment method commonly used by those knowledgeable in the field, using the R value (R refers to the radius of curvature of the paraxial region, usually the R value in the lens database of optical software) to determine concavity or convexity. For the first side surface, when the R value is positive, it is determined to be convex, and when the R value is negative, it is determined to be concave; for the second side surface, when the R value is positive, it is determined to be concave, and when the R value is negative, it is determined to be convex.

[0172] This application generally protects ordinary optical lenses. In the attached drawings, the left side is the object side and the right side is the image side. That is, the first side is the object side and the second side is the image side.

[0173] In an exemplary embodiment, the optical lens provided in this application can be used, for example, as a vehicle-mounted lens. Light rays from the object side can form an image from the image side.

[0174] When the optical lens of this application is applied to a projection lens or a radar transmitting lens, the left side is the imaging side and the right side is the image source side. In an exemplary embodiment, the optical lens provided in this application can be used as, for example, a projection lens or a lidar transmitting lens. In this case, the image side of the optical lens can be the image source side, and the object side can be the imaging side. Light from the image source side can be imaged on the imaging side. The imaging surface of the optical lens is the image source surface.

[0175] The main objective of this invention is to provide an optical lens and an electronic device having the same, so as to solve the problem that it is difficult to simultaneously achieve small aberrations, high resolution, miniaturization, long back focal length, and small distortion in existing optical lenses.

[0176] Example 1

[0177] like Figures 1 to 10 As shown, the optical lens includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. The first lens has positive optical power and its first side surface is convex. The second lens has negative optical power and at least one of its first and second side surfaces is concave. The third lens has positive optical power and its second side surface is convex. The fourth lens has positive optical power and its first and second side surfaces are both convex. The fifth lens has negative optical power and its first and second side surfaces are both concave.

[0178] By setting the first lens to have positive optical power, it is beneficial to collect light from a large field of view. By setting the first side of the first lens to be convex, it has an aesthetically pleasing appearance and is less prone to dust accumulation in actual use.

[0179] Optionally, the second side of the first lens is convex, which further compresses the beam aperture of the large field of view received by the first side of the first lens, which is beneficial to increase the amount of light transmitted and improve the illuminance.

[0180] Of course, the second side of the first lens can also be set to be concave, that is, the first lens is a meniscus lens, which allows the incoming light to transition into the next lens at a smaller angle, so that the entrance pupil is far away from the second principal surface, which helps to reduce the telecentricity of the first side and reduce the aperture of the rear lens group.

[0181] Of course, the second side of the first lens can also be set to be a plane, which is beneficial for converging light rays.

[0182] By setting the second lens to have negative optical power, the light is further diffused, and the light refraction angle is adjusted.

[0183] Optionally, the first side of the second lens is concave, and the second side of the second lens is also concave. The combination of two concave surfaces can better diverge light, and when combined with a subsequent positive lens, it can reduce aberrations. The concave second side of the second lens is beneficial for elongating the back focal length.

[0184] Alternatively, the first side of the second lens can be set to be concave, and the second side to be convex. The first side of the second lens collects and converges light rays from the edge of the field of view, while the convex nature of the second side reduces the light deflection angle, which helps to smooth the light path and reduce sensitivity.

[0185] Of course, the first side of the second lens can also be set to be convex, and the second side to be concave. This can collect and smooth the light passing through the first lens, and diverge the light to pass through the rear lens, which is beneficial for elongating the back focal length.

[0186] Of course, the first side of the second lens can also be set to be concave, and the second side to be flat. A concave first side of the second lens can better diverge light, and when paired with a subsequent positive lens, it can reduce aberrations. A flat second side of the second lens is beneficial for elongating the back focal length.

[0187] Alternatively, the first side of the second lens can be set to be flat, and the second side to be concave. This facilitates a smooth transition of light from the first lens to the second lens and diverges the light to pass through the rear lens, thus lengthening the back focal length.

[0188] By setting the third lens to have positive optical power, light can be converged, resulting in a smooth transition of light path. Setting the second side of the third lens to be convex facilitates the convergence of light into the fourth lens, reducing the light divergence angle, decreasing the sensitivity of the rear optical system, and simultaneously lengthening the system's back focal length.

[0189] Optionally, the first side of the third lens is convex, which is beneficial for collecting light rays that have passed through the second lens.

[0190] Of course, the first side of the third lens can also be set to be concave, which is beneficial for collecting light passing through the second lens and increasing the amount of light transmitted.

[0191] Of course, the first side of the third lens can also be set to be a plane, which can maintain the direction of light passing through the second lens, reduce sensitivity, and improve resolution.

[0192] By setting the fourth lens to have positive optical power, light rays can be converged and their path can be smoothly transitioned. Setting both the first and second sides of the fourth lens to be convex helps reduce sensitivity.

[0193] By setting the fifth lens to have negative optical power, it is beneficial to lengthen the back focal length. By setting the first side of the fifth lens to be concave and the second side to be convex, it collects the light passing through the fourth lens, which facilitates focusing and increases its contribution to the focusing lens group, thereby reducing the size of other lenses and lowering costs.

[0194] Optionally, the first lens is an aspherical lens. Alternatively, both the first and third lenses can be aspherical lenses. Using an aspherical lens can adjust the light path, reduce aberrations, and thus improve resolution. For example, using both the first and third lenses aspherical lenses can better adjust the path of edge light rays, allowing them to focus better after passing through subsequent lens groups. Preferably, a glass aspherical lens is used, as glass aspherical lenses have good thermal stability. Of course, in projection system applications, the first lens can be made of plastic in non-high-temperature environments, as plastic materials help maintain performance while reducing cost and weight.

[0195] In this embodiment, the optical lens also has an aperture stop located between the second lens and the third lens. This facilitates effective light convergence entering the optical lens, reduces the lens aperture at the rear end of the optical lens, and lowers the assembly sensitivity of the optical lens.

[0196] In this embodiment, the total focal length F of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the following ratio: F / H ≥ 1. By limiting F / H ≥ 1, the ratio of the focal length to the image height of the optical lens is determined according to the range of the field of view. When the focal length is greater than the image height, it is beneficial to reduce the aberration of edge rays after passing through the optical lens, thereby improving resolution. Preferably, F / H ≥ 2.8. More preferably, F / H ≥ 3.5. More preferably, 2.8 ≤ F / H ≤ 6. By limiting F / H within the preferred range, higher resolving power can be obtained.

[0197] In this embodiment, the focal length F1 of the first lens and the total focal length F of the optical lens satisfy the condition: 0.5 ≤ F1 / F ≤ 9. By limiting 0.5 ≤ F1 / F ≤ 9, the focal length of the first lens is reasonably increased within a certain range, which is beneficial for adjusting the refraction of central and peripheral rays in each field of view, and facilitates the collection of rays with a large field of view. Preferably, 1.1 ≤ F1 / F ≤ 6.5. More preferably, 1.2 ≤ F1 / F ≤ 7. By limiting F1 / F within the preferred range, it is beneficial to obtain a better imaging effect with a large field of view.

[0198] In this embodiment, the focal lengths of the third lens (F3) and the fourth lens (F4) satisfy |F3 / F4|≤3. By limiting |F3 / F4|≤3, the focal lengths of adjacent lenses in the third and fourth lenses are similar, allowing for mutual compensation of magnification, which helps to smooth the light transition and improves image quality. Preferably, 0.5≤|F3 / F4|≤1.5. By limiting |F3 / F4| within the preferred range, the optical lens can achieve higher image quality.

[0199] In this embodiment, the sagitta of the first side surface SAG7 and the sagitta of the second side surface SAG8 of the fourth lens satisfy the condition: 0.5 ≤ |SAG7 / SAG8| ≤ 5. By limiting 0.5 ≤ |SAG7 / SAG8| ≤ 5, the closer the sagittas of the two sides of the fourth lens are, the more beneficial it is for the first side surface of the fourth lens to collect light, thereby allowing the light to smoothly transition to the second side surface of the fourth lens and exit, effectively reducing system aberrations and improving system imaging quality. Preferably, 0.8 ≤ |SAG7 / SAG8| ≤ 2. By limiting |SAG7 / SAG8| to the preferred range, the optical lens has smaller aberrations and higher image quality.

[0200] In this embodiment, the combined focal length F45 of the fourth and fifth lenses and the overall focal length F of the optical lens satisfy the condition: F45 / F ≤ 6. By limiting F45 / F ≤ 6, the light path between the third lens and the imaging plane is controlled, reducing aberrations caused by large-angle light rays entering through the first lens, while also making the lens structure more compact. Preferably, 1.2 ≤ F45 / F ≤ 4. By limiting F45 / F within the preferred range, both resolving power and miniaturization are achieved.

[0201] In this embodiment, the focal length F1 of the first lens and the focal length F2 of the second lens satisfy the condition: F1 / F2 ≤ -1. By limiting F1 / F2 ≤ -1, the first and second lenses are set with opposite optical powers, while the first lens has a larger focal length, enabling focal length compensation between the first and second lenses, which is beneficial for improving the thermal compensation of the positive system. Preferably, F1 / F2 ≤ -1.2. More preferably, F1 / F2 ≤ -1.4. Even more preferably, -10 ≤ F1 / F2 ≤ -1.4. By limiting F1 / F2 within the preferred range, a better thermal compensation effect can be obtained.

[0202] In this embodiment, the radius of curvature R3 of the first side surface of the second lens and the radius of curvature R4 of the second side surface of the second lens satisfy the following condition: 0.2 ≤ |(R3-R4) / (R3+R4)| ≤ 3. By limiting 0.2 ≤ |(R3-R4) / (R3+R4)| ≤ 3, the degree of curvature difference between the first and second sides of the second lens is controlled, which is beneficial for deflecting the light entering the second lens, diverging the light from each field of view before inputting it into the rear optical system, and increasing the light transmission capability of the system. Preferably, 0.5 ≤ |(R3-R4) / (R3+R4)| ≤ 1.5. By limiting |(R3-R4) / (R3+R4)| to the preferred range, the optical lens has a higher light throughput.

[0203] In this embodiment, the maximum field of view radian value θ of the optical lens, the total focal length F of the optical lens, and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: |(HF*θ) / (F*θ)|≤0.03. By limiting |(HF*θ) / (F*θ)|≤0.03, it is ensured that while the lens field of view and image plane size remain unchanged, increasing the focal length of the lens highlights the imaging effect in the central area of ​​the lens image plane, achieving low distortion while maintaining high resolution. Preferably, |(HF*θ) / (F*θ)|≤0.022. More preferably, |(HF*θ) / (F*θ)|≤0.019. By limiting |(HF*θ) / (F*θ)| within the preferred range, the resolution can be further improved and distortion reduced.

[0204] In this embodiment, the optical back focal length (BFL) and total optical length (TTL) of the optical lens satisfy the following ratio: BFL / TTL ≥ 0.35. By limiting BFL / TTL to ≥ 0.35, the specific requirements for the back focal length of the optical lens are met, and space is also reserved for the installation and focusing of optical components, avoiding mechanical interference. Preferably, 0.4 ≤ BFL / TTL. More preferably, 0.4 ≤ BFL / TTL ≤ 0.45. Limiting BFL / TTL within the preferred range is beneficial for further meeting the requirements for the back focal length.

[0205] In this embodiment, the sagitta SAG6 of the second side surface of the third lens and the center thickness d6 of the third lens satisfy the condition: |arctan(SAG6 / d6)|≥0.2. By limiting |arctan(SAG6 / d6)|≥0.2, the second side surface of the third lens has a larger edge angle, which is beneficial for deflecting edge light, increasing illuminance, and reducing distortion. Preferably, |arctan(SAG6 / d6)|≥0.5. By limiting |arctan(SAG6 / d6)| within the preferred range, it is beneficial to obtain higher illuminance and lower distortion.

[0206] In this embodiment, the maximum angle subtended by the second side of the third lens, arctan(1 / K(S6)), satisfies: |arctan(1 / K(S6))|≥5. By limiting |arctan(1 / K(S6))|≥5, the angle subtended by the second side of the third lens is relatively large, which is beneficial for the rapid focusing of large-angle peripheral light rays entering through the third lens, thereby improving image quality. Preferably, |arctan(1 / K(S6))|≥15. By limiting |arctan(SAG6 / d6)| within the preferred range, higher image quality can be obtained. Here, K in arctan(1 / K(S6)) is the slope of the tangent line at the edge of the lens on the second side of the third lens at the maximum field of view.

[0207] In this embodiment, the overall focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy the condition: F / ENPD ≤ 1.8. Limiting F / ENPD to ≤ 1.8, i.e., controlling the optical lens to have a small FNO, is beneficial for increasing light transmission. Preferably, F / ENPD ≤ 1.5. Limiting F / ENPD within the preferred range is beneficial for further improving light transmission.

[0208] In this embodiment, the optical back focal length (BFL) and the lens group length (TL) of the optical lens satisfy the condition: BFL / TL ≥ 0.3. By limiting BFL / TL to ≥ 0.3, the specific requirements for the back focal length of the optical lens are met, and space is reserved for the installation and focusing of optical components, avoiding mechanical interference. Preferably, BFL / TL ≥ 0.5. Limiting BFL / TL within the preferred range further facilitates meeting the requirements for the back focal length.

[0209] In this embodiment, the overall focal length F of the optical lens, the radius of curvature R3 of the first side surface of the second lens, and the radius of curvature R4 of the second side surface of the second lens satisfy the following condition: 0.5 ≤ |F / R3| + |F / R4| ≤ 3. By limiting 0.5 ≤ |F / R3| + |F / R4| ≤ 3, the surface curvature of the second lens is controlled by the overall focal length of the optical lens, which can assist light in entering the optical lens and effectively correct astigmatism to improve image quality. Preferably, 0.9 ≤ |F / R3| + |F / R4| ≤ 3. More preferably, 1 ≤ |F / R3| + |F / R4| ≤ 2. By limiting |F / R3| + |F / R4| within the preferred range, the resolving power of the optical lens can be improved.

[0210] In this embodiment, the maximum field of view (FOV) of the optical lens, the total focal length (F) of the optical lens, and the image height (H) corresponding to the maximum field of view of the optical lens satisfy the following condition: 35 ≤ (FOV × F) / H. By limiting (FOV × F) / H to 35 ≤ (FOV × F) / H, both large angular resolution and large field of view can be simultaneously satisfied. Preferably, 45 ≤ (FOV × F) / H. More preferably, 55 ≤ (FOV × F) / H. By limiting (FOV × F) / H within the preferred range, it is beneficial for the optical lens to further increase the field of view.

[0211] In this embodiment, the radian value θ of the maximum field of view of the optical lens, the total focal length F of the optical lens, and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: (H / 2) / (F*tan(θ / 2))≥0.5. By limiting (H / 2) / (F*tan(θ / 2))≥0.5, the ratio of the actual image height to the ideal image height is controlled, which is beneficial for achieving large angular resolution. Preferably, (H / 2) / (F*tan(θ / 2))≥0.6. More preferably, (H / 2) / (F*tan(θ / 2))≥0.8. Even more preferably, (H / 2) / (F*tan(θ / 2))≥0.9. Even more preferably, 0.8≤(H / 2) / (F*tan(θ / 2))≤2. By limiting (H / 2) / (F*tan(θ / 2)) within the preferred range, the angular resolution is improved.

[0212] In this embodiment, the radius of curvature R7 of the first side surface of the fourth lens and the radius of curvature R8 of the second side surface of the fourth lens satisfy the condition |R7 / R8|≥0.05. By limiting |R7 / R8|≥0.05, the two sides of the fourth lens are biconvex. Adjusting the surface curvature ratio of the two sides of the fourth lens can smooth the light path and reduce the system sensitivity. Preferably, |R7 / R8|≥0.2. By limiting |R7 / R8| within the preferred range, the sensitivity of the optical lens can be further reduced.

[0213] In this embodiment, the focal length F2 of the second lens and the focal length F3 of the third lens satisfy the condition: F2 / F3≤0. By limiting F2 / F3≤0, the trajectory of the light rays diverging through the second lens and then focused by the third lens can be controlled, reducing the sensitivity of the system. Preferably, F2 / F3≤-0.6. More preferably, -5≤F2 / F3≤-0.6. By limiting F2 / F3 within the preferred range, the sensitivity of the optical lens can be further reduced.

[0214] In this embodiment, the combined focal length F12 of the first lens and the second lens, and the overall focal length F of the optical lens satisfy the following condition: F12 / F ≤ -0.005. By limiting F12 / F ≤ -0.005, and further, F12 / F ≤ -1, the combined focal length of the first lens and the second lens is reasonably allocated, making the combined focal length of the first lens and the second lens negative. This is beneficial for light rays with a large field of view to diverge to the rear system after entering the optical system, thereby increasing the back focal length of the system. Preferably, F12 / F ≤ -0.5. More preferably, F12 / F ≤ -1.25. Even more preferably, -8 ≤ F12 / F ≤ -0.5. By limiting F12 / F within the preferred range, a longer back focal length characteristic can be achieved.

[0215] In this embodiment, the focal length F5 of the fifth lens and the total focal length F of the optical lens satisfy the condition: -5 ≤ F5 / F ≤ -0.5. By limiting -5 ≤ F5 / F ≤ -0.5, the focal length of the fifth lens is rationally allocated, increasing the contribution of the fifth lens's focal length to the overall lens focal length, thereby lengthening the back focal length. More preferably, -3 ≤ F5 / F ≤ -1. By limiting F5 / F within the preferred range, a longer back focal length characteristic can be achieved.

[0216] In this embodiment, the air gap d23 between the second and third lenses on the optical axis of the lens, the center thickness T2 of the second lens, and the center thickness T3 of the third lens satisfy the following condition: 0.1 ≤ d23 / (T2+T3) ≤ 2. By limiting 0.1 ≤ d23 / (T2+T3) ≤ 2, the gap between the second and third lenses is controlled, causing the emitted light from the second lens to have an upward trend, which is beneficial for achieving a long back focal length. Preferably, 0.2 ≤ d23 / (T2+T3) ≤ 1. By limiting d23 / (T2+T3) within the preferred range, a longer back focal length characteristic can be achieved.

[0217] In this embodiment, the air gap d23 between the second and third lenses on the optical axis of the optical lens, the optical back focal length BFL of the optical lens, and the combined focal length F45 of the fourth and fifth lenses satisfy the following condition: d23*BFL / F45≥1. By limiting d23*BFL / F45≥1, the light rays emitted from the second lens exhibit an upward trend, which is then pushed down by the rear group, thereby achieving a long back focal length for the lens. Preferably, d23*BFL / F45≥2. By limiting d23*BFL / F45 within the preferred range, an even longer back focal length characteristic can be achieved.

[0218] In this embodiment, the radius of curvature R1 of the first side surface of the first lens and the focal length F1 of the first lens satisfy the condition: 0 ≤ R1 / F1 ≤ 20. Preferably, 0 < R1 / F1 ≤ 5. Limiting 0 ≤ R1 / F1 ≤ 20 and 0 < R1 / F1 ≤ 5 both allow adjustment of the trajectory of the principal ray after entering the lens, ensuring that its image height on the imaging plane is close to the ideal image height, which is beneficial for achieving low distortion. In particular, when 0 < R1 / F1 ≤ 5, by setting the ratio of the radius of curvature of the first side surface of the convex first lens to the focal length of the first lens within this range, it is more advantageous to reduce the aperture of the first lens, promoting miniaturization of the optical lens design.

[0219] Example 2

[0220] like Figures 1 to 10As shown, the optical lens includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. The first lens has positive optical power; the second lens has negative optical power; the third lens has positive optical power; the fourth lens has positive optical power; and the fifth lens has negative optical power. The optical back focal length (BFL) and the optical total length (TTL) of the optical lens satisfy the following condition: BFL / TTL ≥ 0.35.

[0221] By setting the first lens to have a positive optical power, it is beneficial to collect light from a wide field of view. By setting the second lens to have a negative optical power, the light is further diverged, and the refraction angle of the light is adjusted. By setting the third lens to have a positive optical power, the light can be converged, making the light path transition smoothly. By setting the fourth lens to have a positive optical power, the light can be converged, and the light path transition smoothly. By setting the fifth lens to have a negative optical power, it is beneficial to lengthen the back focal length. By limiting BFL / TTL to ≥ 0.35, the special requirements for the back focal length of the optical lens are met, and space is also reserved for the installation of optical components and focusing, avoiding mechanical interference.

[0222] Preferably, 0.4 ≤ BFL / TTL. More preferably, 0.4 ≤ BFL / TTL ≤ 0.6. Limiting BFL / TTL within the preferred range helps to further meet the requirements for back focal length.

[0223] By making the first side of the first lens convex, it has an aesthetically pleasing appearance and is less prone to dust accumulation in actual use. Optionally, the second side of the first lens can also be convex, further compressing the beam aperture of the large field of view received by the first side of the first lens, which helps to increase light transmission and improve illumination. Of course, the second side of the first lens can also be made concave, that is, the first lens can be a meniscus lens, which allows the incoming light to transition to the next lens at a smaller angle, making the entrance pupil farther away from the second principal surface, which helps to reduce the telecentricity of the first side and reduce the aperture of the subsequent lens group. Alternatively, the second side of the first lens can be made flat, which helps to converge light rays.

[0224] Optionally, both the first and second sides of the second lens are concave. This double-concave design better diverges light, and when combined with a subsequent positive lens, it reduces aberrations. The concave second side of the second lens also helps to lengthen the back focal length. Alternatively, the first side of the second lens can be concave, and the second side convex. The first side of the second lens collects and converges light rays from the edge of the field of view, while the convex second side reduces the light deflection angle, smoothing the light path and reducing sensitivity. Alternatively, the first side of the second lens can be convex, and the second side concave. This allows for the collection and smoothing of light rays passing through the first lens, and the divergence of light rays to pass through the subsequent lens, thus helping to lengthen the back focal length.

[0225] Of course, the first side of the second lens can also be set to be concave, and the second side to be flat. A concave first side of the second lens can better diverge light, which can reduce aberrations when paired with a subsequent positive lens, while a flat second side of the second lens is beneficial for elongating the back focal length.

[0226] Alternatively, the first side of the second lens can be set to be flat, and the second side to be concave. This facilitates a smooth transition of light from the first lens to the second lens and diverges the light to pass through the rear lens, thus lengthening the back focal length.

[0227] By making the second side of the third lens convex, it is beneficial to converge light rays into the fourth lens, reduce the light angle, decrease the sensitivity of the rear optical system, and also help to lengthen the system's back focal length. Optionally, the first side of the third lens can be convex to better collect light rays passing through the second lens. Alternatively, the first side of the third lens can be concave to further collect light rays passing through the second lens and increase light transmission. Of course, the first side of the third lens can also be flat to maintain the light path passing through the second lens, reduce sensitivity, and improve resolution.

[0228] By setting both the first and second sides of the fourth lens to be convex, it is beneficial to reduce sensitivity.

[0229] By setting the first side of the fifth lens to be concave and the second side of the fifth lens to be convex, the light rays passing through the fourth lens are collected, which facilitates focusing and increases its contribution to the focusing lens group, thereby reducing the size of other lenses and lowering costs.

[0230] Optionally, the first lens is an aspherical lens. Alternatively, both the first and third lenses can be aspherical lenses. Using an aspherical lens can adjust the light path, reduce aberrations, and thus improve resolution. For example, using both the first and third lenses aspherical lenses can better adjust the path of edge light rays, allowing them to focus better after passing through subsequent lens groups. Preferably, a glass aspherical lens is used, as glass aspherical lenses have good thermal stability. Of course, in projection system applications, the first lens can be made of plastic in non-high-temperature environments, as plastic materials help maintain performance while reducing cost and weight.

[0231] In this embodiment, the optical lens also has an aperture stop located between the second lens and the third lens. This facilitates effective light convergence entering the optical lens, reduces the lens aperture at the rear end of the optical lens, and lowers the assembly sensitivity of the optical lens.

[0232] In this embodiment, the total focal length F of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the following ratio: F / H ≥ 1. By limiting F / H ≥ 1, the ratio of the focal length to the image height of the optical lens is determined according to the range of the field of view. When the focal length is greater than the image height, it is beneficial to reduce the aberration of edge rays after passing through the optical lens, thereby improving resolution. Preferably, F / H ≥ 2.8. More preferably, F / H ≥ 3.5. More preferably, 2.8 ≤ F / H ≤ 6. By limiting F / H within the preferred range, higher resolving power can be obtained.

[0233] In this embodiment, the focal length F1 of the first lens and the total focal length F of the optical lens satisfy the condition: 0.5 ≤ F1 / F ≤ 9. By limiting 0.5 ≤ F1 / F ≤ 9, the focal length of the first lens is reasonably increased within a certain range, which is beneficial for adjusting the refraction of central and peripheral rays in each field of view, and facilitates the collection of rays with a large field of view. Preferably, 1.1 ≤ F1 / F ≤ 6.5. More preferably, 1.2 ≤ F1 / F ≤ 7. By limiting F1 / F within the preferred range, it is beneficial to obtain a better imaging effect with a large field of view.

[0234] In this embodiment, the focal lengths of the third lens (F3) and the fourth lens (F4) satisfy |F3 / F4|≤3. By limiting |F3 / F4|≤3, the focal lengths of adjacent lenses in the third and fourth lenses are similar, allowing for mutual compensation of magnification, which helps to smooth the light transition and improves image quality. Preferably, 0.5≤|F3 / F4|≤1.5. By limiting |F3 / F4| within the preferred range, the optical lens can achieve higher image quality.

[0235] In this embodiment, the sagitta of the first side surface SAG7 and the sagitta of the second side surface SAG8 of the fourth lens satisfy the condition: 0.5 ≤ |SAG7 / SAG8| ≤ 5. By limiting 0.5 ≤ |SAG7 / SAG8| ≤ 5, the closer the sagittas of the two sides of the fourth lens are, the more beneficial it is for the first side surface of the fourth lens to collect light, thereby allowing the light to smoothly transition to the second side surface of the fourth lens and exit, effectively reducing system aberrations and improving system imaging quality. Preferably, 0.8 ≤ |SAG7 / SAG8| ≤ 2. By limiting |SAG7 / SAG8| to the preferred range, the optical lens has smaller aberrations and higher image quality.

[0236] In this embodiment, the combined focal length F45 of the fourth and fifth lenses and the overall focal length F of the optical lens satisfy the condition: F45 / F ≤ 6. By limiting F45 / F ≤ 6, the light path between the third lens and the imaging plane is controlled, reducing aberrations caused by large-angle light rays entering through the first lens, while also making the lens structure more compact. Preferably, 1.2 ≤ F45 / F ≤ 4. By limiting F45 / F within the preferred range, both resolving power and miniaturization are achieved.

[0237] In this embodiment, the focal length F1 of the first lens and the focal length F2 of the second lens satisfy the condition: F1 / F2 ≤ -1. By limiting F1 / F2 ≤ -1, the first and second lenses are set with opposite optical powers, while the first lens has a larger focal length, enabling focal length compensation between the first and second lenses, which is beneficial for improving the thermal compensation of the positive system. Preferably, F1 / F2 ≤ -1.2. More preferably, F1 / F2 ≤ -1.4. Even more preferably, -10 ≤ F1 / F2 ≤ -1.4. By limiting F1 / F2 within the preferred range, a better thermal compensation effect can be obtained.

[0238] In this embodiment, the radius of curvature R3 of the first side surface of the second lens and the radius of curvature R4 of the second side surface of the second lens satisfy the following condition: 0.2 ≤ |(R3-R4) / (R3+R4)| ≤ 3. By limiting 0.2 ≤ |(R3-R4) / (R3+R4)| ≤ 3, the degree of curvature difference between the first and second sides of the second lens is controlled, which is beneficial for deflecting the light entering the second lens, diverging the light from each field of view before inputting it into the rear optical system, and increasing the light transmission capability of the system. Preferably, 0.5 ≤ |(R3-R4) / (R3+R4)| ≤ 1.5. By limiting |(R3-R4) / (R3+R4)| to the preferred range, the optical lens has a higher light throughput.

[0239] In this embodiment, the maximum field of view radian value θ of the optical lens, the total focal length F of the optical lens, and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: |(HF*θ) / (F*θ)|≤0.03. By limiting |(HF*θ) / (F*θ)|≤0.03, it is ensured that while the lens field of view and image plane size remain unchanged, increasing the focal length of the lens highlights the imaging effect in the central area of ​​the lens image plane, achieving low distortion while maintaining high resolution. Preferably, |(HF*θ) / (F*θ)|≤0.022. More preferably, |(HF*θ) / (F*θ)|≤0.019. By limiting |(HF*θ) / (F*θ)| within the preferred range, the resolution can be further improved and distortion reduced.

[0240] In this embodiment, the sagitta SAG6 of the second side surface of the third lens and the center thickness d6 of the third lens satisfy the condition: |arctan(SAG6 / d6)|≥0.2. By limiting |arctan(SAG6 / d6)|≥0.2, the second side surface of the third lens has a larger edge angle, which is beneficial for deflecting edge light, increasing illuminance, and reducing distortion. Preferably, |arctan(SAG6 / d6)|≥0.5. By limiting |arctan(SAG6 / d6)| within the preferred range, it is beneficial to obtain higher illuminance and lower distortion.

[0241] In this embodiment, the maximum angle subtended by the second side of the third lens, arctan(1 / K(S6)), satisfies: |arctan(1 / K(S6))|≥5. By limiting |arctan(1 / K(S6))|≥5, the angle subtended by the second side of the third lens is relatively large, which is beneficial for the rapid focusing of large-angle peripheral light rays entering through the third lens, thereby improving image quality. Preferably, |arctan(1 / K(S6))|≥15. By limiting |arctan(SAG6 / d6)| within the preferred range, higher image quality can be obtained. Here, K in arctan(1 / K(S6)) is the slope of the tangent line at the edge of the lens on the second side of the third lens at the maximum field of view.

[0242] In this embodiment, the overall focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy the condition: F / ENPD ≤ 1.8. Limiting F / ENPD to ≤ 1.8, i.e., controlling the optical lens to have a small FNO, is beneficial for increasing light transmission. Preferably, F / ENPD ≤ 1.5. Limiting F / ENPD within the preferred range is beneficial for further improving light transmission.

[0243] In this embodiment, the optical back focal length (BFL) and the lens group length (TL) of the optical lens satisfy the condition: BFL / TL ≥ 0.3. By limiting BFL / TL to ≥ 0.3, the specific requirements for the back focal length of the optical lens are met, and space is reserved for the installation and focusing of optical components, avoiding mechanical interference. Preferably, BFL / TL ≥ 0.5. Limiting BFL / TL within the preferred range further facilitates meeting the requirements for the back focal length.

[0244] In this embodiment, the overall focal length F of the optical lens, the radius of curvature R3 of the first side surface of the second lens, and the radius of curvature R4 of the second side surface of the second lens satisfy the following condition: 0.5 ≤ |F / R3| + |F / R4| ≤ 3. By limiting 0.5 ≤ |F / R3| + |F / R4| ≤ 3, the surface curvature of the second lens is controlled by the overall focal length of the optical lens, which can assist light in entering the optical lens and effectively correct astigmatism to improve image quality. Preferably, 0.9 ≤ |F / R3| + |F / R4| ≤ 3. More preferably, 1 ≤ |F / R3| + |F / R4| ≤ 2. By limiting |F / R3| + |F / R4| within the preferred range, the resolving power of the optical lens can be improved.

[0245] In this embodiment, the maximum field of view (FOV) of the optical lens, the total focal length (F) of the optical lens, and the image height (H) corresponding to the maximum field of view of the optical lens satisfy the following condition: 35 ≤ (FOV × F) / H. By limiting (FOV × F) / H to 35 ≤ (FOV × F) / H, both large angular resolution and large field of view can be simultaneously satisfied. Preferably, 45 ≤ (FOV × F) / H. More preferably, 55 ≤ (FOV × F) / H. By limiting (FOV × F) / H within the preferred range, it is beneficial for the optical lens to further increase the field of view.

[0246] In this embodiment, the radian value θ of the maximum field of view of the optical lens, the total focal length F of the optical lens, and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: (H / 2) / (F*tan(θ / 2))≥0.5. By limiting (H / 2) / (F*tan(θ / 2))≥0.5, the ratio of the actual image height to the ideal image height is controlled, which is beneficial for achieving a large angular resolution. Preferably, (H / 2) / (F*tan(θ / 2))≥0.6. More preferably, (H / 2) / (F*tan(θ / 2))≥0.8. Even more preferably, 0.8≤(H / 2) / (F*tan(θ / 2))≤2. Even more preferably, (H / 2) / (F*tan(θ / 2))≥0.9. By limiting (H / 2) / (F*tan(θ / 2)) within the preferred range, the angular resolution is improved.

[0247] In this embodiment, the radius of curvature R7 of the first side surface of the fourth lens and the radius of curvature R8 of the second side surface of the fourth lens satisfy the condition |R7 / R8|≥0.05. By limiting |R7 / R8|≥0.05, the two sides of the fourth lens are biconvex. Adjusting the surface curvature ratio of the two sides of the fourth lens can smooth the light path and reduce the system sensitivity. Preferably, |R7 / R8|≥0.2. By limiting |R7 / R8| within the preferred range, the sensitivity of the optical lens can be further reduced.

[0248] In this embodiment, the focal length F2 of the second lens and the focal length F3 of the third lens satisfy the condition: F2 / F3≤0. By limiting F2 / F3≤0, the trajectory of the light rays diverging through the second lens and then focused by the third lens can be controlled, reducing the sensitivity of the system. Preferably, F2 / F3≤-0.6. More preferably, -5≤F2 / F3≤-0.6. By limiting F2 / F3 within the preferred range, the sensitivity of the optical lens can be further reduced.

[0249] In this embodiment, the combined focal length F12 of the first and second lenses and the overall focal length F of the optical lens satisfy the following condition: F12 / F ≤ -0.005. By limiting F12 / F ≤ -0.005, and further, F12 / F ≤ -1, the combined focal length of the first and second lenses is reasonably allocated, making the combined focal length of the first and second lenses negative. This is beneficial for light rays with a large field of view to diverge to the rear system after entering the optical system, thereby increasing the back focal length of the system. Preferably, F12 / F ≤ -0.5. More preferably, F12 / F ≤ -1.25. More preferably, -8 ≤ F12 / F ≤ -0.5. By limiting F12 / F within the preferred range, a longer back focal length characteristic can be achieved. For example, the combined focal length of the lenses is the reciprocal of the combined optical power.

[0250] In this embodiment, the focal length F5 of the fifth lens and the total focal length F of the optical lens satisfy the condition: -5 ≤ F5 / F ≤ -0.5. By limiting -5 ≤ F5 / F ≤ -0.5, the focal length of the fifth lens is rationally allocated, increasing the contribution of the fifth lens's focal length to the overall lens focal length, thereby lengthening the back focal length. Preferably, -3 ≤ F5 / F ≤ -1. By limiting F5 / F within the preferred range, a longer back focal length characteristic can be achieved.

[0251] In this embodiment, the air gap d23 between the second and third lenses on the optical axis of the lens, the center thickness T2 of the second lens, and the center thickness T3 of the third lens satisfy the following condition: 0.1 ≤ d23 / (T2+T3) ≤ 2. By limiting 0.1 ≤ d23 / (T2+T3) ≤ 2, the gap between the second and third lenses is controlled, causing the emitted light from the second lens to have an upward trend, which is beneficial for achieving a long back focal length. Preferably, 0.2 ≤ d23 / (T2+T3) ≤ 1. By limiting d23 / (T2+T3) within the preferred range, a longer back focal length characteristic can be achieved.

[0252] In this embodiment, the air gap d23 between the second and third lenses on the optical axis of the optical lens, the optical back focal length BFL of the optical lens, and the combined focal length F45 of the fourth and fifth lenses satisfy the following condition: d23*BFL / F45≥1. By limiting d23*BFL / F45≥1, the light rays emitted from the second lens exhibit an upward trend, which is then pushed down by the rear group, thereby achieving a long back focal length for the lens. Preferably, d23*BFL / F45≥2. By limiting d23*BFL / F45 within the preferred range, an even longer back focal length characteristic can be achieved.

[0253] In this embodiment, the radius of curvature R1 of the first side surface of the first lens and the focal length F1 of the first lens satisfy the condition: 0 ≤ R1 / F1 ≤ 20. Preferably, 0 < R1 / F1 ≤ 5. Limiting 0 ≤ R1 / F1 ≤ 20 and 0 < R1 / F1 ≤ 5 both allow adjustment of the trajectory of the principal ray after entering the lens, ensuring that its image height on the imaging plane is close to the ideal image height, which is beneficial for achieving low distortion. In particular, when 0 < R1 / F1 ≤ 5, by setting the ratio of the radius of curvature of the first side surface of the convex first lens to the focal length of the first lens within this range, it is more advantageous to reduce the aperture of the first lens, promoting miniaturization of the optical lens design.

[0254] It should be noted that the total length TTL of the optical lens is the on-axis distance from the first side of the first lens to the imaging plane of the optical lens, the optical back focal length BFL is the on-axis distance from the last lens to the imaging plane of the optical lens, and the lens group length TL of the optical lens is the on-axis distance from the first side of the first lens to the second side of the last lens.

[0255] Optionally, the aforementioned optical lens may also include a filter for correcting color deviation and a protective glass for protecting the photosensitive element located on the imaging surface.

[0256] It should be noted that, in this application, the front port diameter D of the optical lens is the maximum light-transmitting aperture of the first side of the first lens corresponding to the maximum field of view of the optical lens.

[0257] The optical lens in this application may employ multiple lenses, such as the five lenses described above. In this application, at least one of the mirror surfaces of each lens is an aspherical mirror surface. An aspherical lens is characterized by a continuously changing curvature from the lens center to the lens periphery. Unlike a spherical lens, which has a constant curvature from the lens center to the lens periphery, an aspherical lens has better curvature radius characteristics, offering advantages in improving distortion aberrations and astigmatism. By using an aspherical lens, aberrations occurring during imaging can be eliminated as much as possible, thereby improving image quality. Specifically, when the imaging quality of the optical lens is of primary concern, all five lenses may be aspherical lenses.

[0258] In an exemplary embodiment, the first to fifth lenses can all be glass lenses. Optical lenses made of glass can suppress the shift in the back focus of the optical lens due to temperature changes, thereby improving system stability. Simultaneously, using glass avoids lens blurring caused by high and low temperature variations in the operating environment, thus preventing interference with normal lens use. For example, an all-glass optical lens has a wider temperature range, maintaining stable optical performance within the range of -40°C to 105°C. Specifically, when resolution and reliability are of primary concern, the first to fifth lenses can all be aspherical glass lenses. Of course, in applications with lower temperature stability requirements, the first to fifth lenses in the optical lens can also be made of plastic. Using plastic to make optical lenses can effectively reduce manufacturing costs. Alternatively, the first to fifth lenses in the optical lens can also be made of a combination of plastic and glass.

[0259] This application also provides an electronic device, including the aforementioned optical lens and an imaging element for converting the optical image formed by the optical lens into an electrical signal. The imaging element may be a photocoupled device (CCD) or a complementary metal oxide semiconductor device (CMOS). The electronic device may be a standalone imaging device such as a digital camera, or an imaging module integrated into a mobile electronic device such as a mobile phone. This electronic device is equipped with the optical lens described above.

[0260] However, those skilled in the art will understand that the number of lenses constituting the optical lens can be varied to obtain the various results and advantages described herein without departing from the technical solutions claimed in this application. For example, although five lenses are described as an example in the embodiments, the optical lens is not limited to including five lenses. If necessary, the optical lens may also include other numbers of lenses.

[0261] The following description, with reference to the accompanying drawings, further illustrates examples of specific surface shapes and parameters of optical lenses applicable to the above embodiments.

[0262] Example 1

[0263] like Figure 1 As shown, the optical lens, from the object side to the image side, includes a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a filter, and an imaging plane IMA.

[0264] The first lens L1 has positive optical power, and its first side surface S1 and second side surface S2 are convex. The second lens L2 has negative optical power, and its first side surface S3 and second side surface S4 are concave. The third lens L3 has positive optical power, and its first side surface S5 and second side surface S6 are convex. The fourth lens L4 has positive optical power, and its first side surface S7 and second side surface S8 are convex. The fifth lens has negative optical power, and its first side surface S9 and second side surface S10 are concave. The filter has a first side surface S11 and a second side surface S12. Light from the object passes sequentially through surfaces S1 to S12 and is finally imaged on the imaging plane IMA.

[0265] In this example, the focal length F of the optical lens is 50.6701mm, the total length TTL of the optical lens is 88.3333mm, and the maximum field of view FOV of the optical lens is 15.6599°.

[0266] Table 1 shows the basic structural parameters of the optical lens in Example 1, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity represents infinity.

[0267] 1 169.2148 4.7328 1.77 49.60 2 -129.2026 7.5421 3 -29.1655 1.7784 1.62 36.35 4 -857.9694 4.4973 STO Infinity 0.6851 5 1212.2882 9.2960 1.69 54.54 6 -37.5033 9.5369 7 52.9929 7.8367 1.62 60.34 8 -84.7179 1.4166 9 -60.0272 3.6015 1.85 23.78 10 -194.0013 36.0000 11 Infinity 1.1000 1.51 62.75 12 Infinity 0.3100 IMA / /

[0268] Table 1

[0269] In this example, the first lens is an aspherical lens. The surface shape of each aspherical lens can be defined using, but is not limited to, the following aspherical formula:

[0270]

[0271] Where x is the distance vector from the vertex of the aspherical surface along the optical axis at a height of h; c is the paraxial curvature of the aspherical surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient; and A is the higher-order coefficient. Table 2 below shows the conic coefficient k and the higher-order coefficients A (4th-order coefficient), B (6th-order coefficient), C (8th-order coefficient), and D (10th-order coefficient) that can be used for the aspherical lens surface in this example.

[0272] 1 0.0364 -1.7148E-08 -1.7209E-10 -4.2393E-13 -3.8489E-16 2 -0.2599 1.6098E-08 -1.6645E-11 -2.2705E-13 -1.1093E-15

[0273] Table 2

[0274] Example 2

[0275] like Figure 2As shown, the optical lens, from the object side to the image side, includes a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a filter, and an imaging plane IMA.

[0276] The first lens L1 has positive optical power, and its first side surface S1 and second side surface S2 are convex. The second lens L2 has negative optical power, and its first side surface S3 and second side surface S4 are concave. The third lens L3 has positive optical power, and its first side surface S5 and second side surface S6 are convex. The fourth lens L4 has positive optical power, and its first side surface S7 and second side surface S8 are convex. The fifth lens has negative optical power, and its first side surface S9 and second side surface S10 are concave. The filter has a first side surface S11 and a second side surface S12. Light from the object passes sequentially through surfaces S1 to S12 and is finally imaged on the imaging plane IMA.

[0277] In this example, the focal length F of the optical lens is 50.6700mm, the total length TTL of the optical lens is 88.3334mm, and the maximum field of view FOV of the optical lens is 15.6599°.

[0278] Table 3 shows the basic structural parameters of the optical lens in Example 2, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity represents infinity.

[0279]

[0280]

[0281] Table 3

[0282] In this example, the first lens is an aspherical lens. The surface shape of each aspherical lens can be defined using, but is not limited to, formula (1) in Example 1.

[0283] Table 4 below shows the conic coefficient k and the coefficients of each higher-order term that can be used for the aspherical lens surface in this example.

[0284] 1 -1.0534 -4.7231E-08 -1.9130E-11 -4.4509E-13 -8.6793E-16 2 -0.9103 5.7005E-08 -2.1554E-10 -3.6281E-13 -9.6955E-16

[0285] Table 4

[0286] Example 3

[0287] like Figure 3As shown, the optical lens, from the object side to the image side, includes a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a filter, and an imaging plane IMA.

[0288] The first lens L1 has positive optical power, and its first side surface S1 is convex, as are its second side surface S2. The second lens L2 has negative optical power, and its first side surface S3 is concave, as are its second side surface S4. The third lens L3 has positive optical power, and its first side surface S5 is concave, as are its second side surface S6. The fourth lens L4 has positive optical power, and its first side surface S7 is convex, as are its second side surface S8. The fifth lens has negative optical power, and its first side surface S9 is concave, as are its second side surface S10. The filter has a first side surface S11 and a second side surface S12. Light from the object passes sequentially through surfaces S1 to S12 and is finally imaged onto the imaging plane IMA.

[0289] In this example, the focal length F of the optical lens is 50.7290mm, the total length TTL of the optical lens is 88.3334mm, and the maximum field of view FOV of the optical lens is 15.6599°.

[0290] Table 5 shows the basic structural parameters of the optical lens in Example 3, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity represents infinity.

[0291]

[0292]

[0293] Table 5

[0294] In this example, the first and third lenses are aspherical lenses. The surface shape of each aspherical lens can be defined using, but is not limited to, formula (1) in Example 1.

[0295] Table 6 below shows the conic coefficient k and the coefficients of each higher-order term that can be used for the aspherical lens surface in this example.

[0296] 1 -7.5697 -9.2239E-07 5.6246E-10 -3.8240E-13 0.0000E+00 2 -52.2810 5.0752E-07 -3.8936E-10 1.1045E-12 0.0000E+00 6 0.0296 -3.4946E-07 -1.2122E-10 4.0330E-13 6.5267E-16

[0297] Table 6

[0298] Example 4

[0299] like Figure 4As shown, the optical lens, from the object side to the image side, includes a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a filter, and an imaging plane IMA.

[0300] The first lens L1 has positive optical power, and its first side surface S1 is convex, as are its second side surface S2. The second lens L2 has negative optical power, and its first side surface S3 is concave, as are its second side surface S4. The third lens L3 has positive optical power, and its first side surface S5 is concave, as are its second side surface S6. The fourth lens L4 has positive optical power, and its first side surface S7 is convex, as are its second side surface S8. The fifth lens has negative optical power, and its first side surface S9 is concave, as are its second side surface S10. The filter has a first side surface S11 and a second side surface S12. Light from the object passes sequentially through surfaces S1 to S12 and is finally imaged onto the imaging plane IMA.

[0301] In this example, the focal length F of the optical lens is 50.7299mm, the total length TTL of the optical lens is 88.3334mm, and the maximum field of view FOV of the optical lens is 15.6599°.

[0302] Table 7 shows the basic structural parameters of the optical lens in Example 4, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity represents infinity.

[0303]

[0304]

[0305] Table 7

[0306] In this example, the first and third lenses are aspherical lenses. The surface shape of each aspherical lens can be defined using, but is not limited to, formula (1) in Example 1.

[0307] Table 8 below shows the conic coefficient k and the coefficients of each higher-order term that can be used for the aspherical lens surface in this example.

[0308] 1 -7.5496 -9.2000E-07 5.6946E-10 -5.2344E-13 0.0000E+00 2 -53.6910 5.1083E-07 -3.9446E-10 1.2224E-12 0.0000E+00 6 0.0314 -3.4618E-07 -1.5743E-10 3.4112E-13 5.5943E-16

[0309] Table 8

[0310] Example 5

[0311] like Figure 5As shown, the optical lens, from the object side to the image side, includes a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a filter, and an imaging plane IMA.

[0312] The first lens L1 has positive optical power, and its first side surface S1 and second side surface S2 are convex. The second lens L2 has negative optical power, and its first side surface S3 and second side surface S4 are concave. The third lens L3 has positive optical power, its first side surface S5 is flat, and its second side surface S6 is convex. The fourth lens L4 has positive optical power, its first side surface S7 and second side surface S8 are convex. The fifth lens has negative optical power, its first side surface S9 is concave, and its second side surface S10 is convex. The filter has a first side surface S11 and a second side surface S12. Light from the object passes sequentially through surfaces S1 to S12 and is finally imaged on the imaging plane IMA.

[0313] In this example, the focal length F of the optical lens is 50.6966mm, the total length TTL of the optical lens is 88.3333mm, and the maximum field of view FOV of the optical lens is 15.6599°.

[0314] Table 9 shows the basic structural parameters of the optical lens in Example 5, where the radius of curvature (Radius) and thickness / distance are in millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity represents infinity.

[0315] 1 961.6699 5.4850 1.77 49.60 2 -66.9054 7.1981 3 -29.9156 2.1331 1.62 36.35 4 437.0390 4.6435 STO Infinity 1.1567 5 Infinity 9.0078 1.69 54.54 6 -36.1754 9.0619 7 51.2396 7.7437 1.62 60.34 8 -82.0802 0.8921 9 -54.8984 3.6013 1.85 23.78 10 -191.3853 36.0000 11 Infinity 1.1000 1.51 62.75 12 Infinity 0.3100 IMA / /

[0316] Table 9

[0317] Example 6

[0318] like Figure 6 As shown, the optical lens, from the object side to the image side, includes a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a filter, and an imaging plane IMA.

[0319] The first lens L1 has positive optical power, and its first side surface S1 and second side surface S2 are convex. The second lens L2 has negative optical power, and its first side surface S3 and second side surface S4 are concave. The third lens L3 has positive optical power, its first side surface S5 is flat, and its second side surface S6 is convex. The fourth lens L4 has positive optical power, its first side surface S7 and second side surface S8 are convex. The fifth lens has negative optical power, its first side surface S9 is concave, and its second side surface S10 is convex. The filter has a first side surface S11 and a second side surface S12. Light from the object passes sequentially through surfaces S1 to S12 and is finally imaged on the imaging plane IMA.

[0320] In this example, the focal length F of the optical lens is 50.6942mm, the total length TTL of the optical lens is 88.3333mm, and the maximum field of view FOV of the optical lens is 15.6599°.

[0321] Table 10 shows the basic structural parameters of the optical lens in Example 6, where the radius of curvature (Radius) and thickness / distance are in millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity represents infinity.

[0322]

[0323]

[0324] Table 10

[0325] Example 7

[0326] like Figure 7 As shown, the optical lens, from the object side to the image side, includes a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a filter, and an imaging plane IMA.

[0327] The first lens L1 has positive optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has negative optical power, its first side surface S3 is convex, and its second side surface S4 is concave. The third lens L3 has positive optical power, its first side surface S5 is convex, and its second side surface S6 is convex. The fourth lens L4 has positive optical power, its first side surface S7 is convex, and its second side surface S8 is convex. The fifth lens has negative optical power, its first side surface S9 is concave, and its second side surface S10 is convex. The filter has a first side surface S11 and a second side surface S12. Light from the object passes sequentially through surfaces S1 to S12 and is finally imaged onto the imaging plane IMA.

[0328] In this example, the focal length F of the optical lens is 50.6932mm, the total length TTL of the optical lens is 88.3333mm, and the maximum field of view FOV of the optical lens is 15.6601°.

[0329] Table 11 shows the basic structural parameters of the optical lens in Example 7, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity represents infinity.

[0330] 1 45.5167 4.6487 1.77 49.60 2 53.3559 7.0737 3 262.6342 2.5000 1.85 23.78 4 35.8880 4.5828 STO 50.8287 9.6337 1.69 54.54 5 -57.8807 0.4866 6 Infinity 9.5914 7 66.3190 6.9637 1.62 60.34 8 -65.7932 1.8783 9 -56.2682 3.5644 1.62 60.34 10 -228.0000 36.0000 11 Infinity 1.1000 1.51 62.75 12 Infinity 0.3100 IMA / /

[0331] Table 11

[0332] Example 8

[0333] like Figure 8 As shown, the optical lens, from the object side to the image side, includes a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a filter, and an imaging plane IMA.

[0334] The first lens L1 has positive optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has negative optical power, its first side surface S3 is convex, and its second side surface S4 is concave. The third lens L3 has positive optical power, its first side surface S5 is convex, and its second side surface S6 is convex. The fourth lens L4 has positive optical power, its first side surface S7 is convex, and its second side surface S8 is convex. The fifth lens has negative optical power, its first side surface S9 is concave, and its second side surface S10 is convex. The filter has a first side surface S11 and a second side surface S12. Light from the object passes sequentially through surfaces S1 to S12 and is finally imaged onto the imaging plane IMA.

[0335] In this example, the focal length F of the optical lens is 50.7191mm, the total length TTL of the optical lens is 88.3333mm, and the maximum field of view FOV of the optical lens is 15.6601°.

[0336] Table 12 shows the basic structural parameters of the optical lens in Example 8, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity represents infinity.

[0337] 1 45.3476 4.6475 1.77 49.60 2 52.9878 7.0728 3 266.2837 2.5000 1.85 23.78 4 35.9675 4.5827 STO 50.7925 9.6364 1.69 54.54 5 -57.9304 0.4874 6 Infinity 9.5892 7 66.3741 6.9635 1.62 60.34 8 -65.7853 1.8779 9 -56.3496 3.5659 1.62 60.34 10 -228.3055 36.0000 11 Infinity 1.1000 1.51 62.75 12 Infinity 0.3100 IMA / /

[0338] Table 12

[0339] Example 9

[0340] like Figure 9 As shown, the optical lens, from the object side to the image side, includes a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a filter, and an imaging plane IMA.

[0341] The first lens L1 has positive optical power, and its first side surface S1 and second side surface S2 are convex. The second lens L2 has negative optical power, and its first side surface S3 and second side surface S4 are concave. The third lens L3 has positive optical power, and its first side surface S5 and second side surface S6 are convex. The fourth lens L4 has positive optical power, and its first side surface S7 and second side surface S8 are convex. The fifth lens has negative optical power, and its first side surface S9 and second side surface S10 are convex. The filter has a first side surface S11 and a second side surface S12. Light from the object passes sequentially through surfaces S1 to S12 and is finally imaged onto the imaging plane IMA.

[0342] In this example, the focal length F of the optical lens is 50.7003mm, the total length TTL of the optical lens is 88.3333mm, and the maximum field of view FOV of the optical lens is 15.6599°.

[0343] Table 13 shows the basic structural parameters of the optical lens of Example 9, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity represents infinity.

[0344] 1 106.4282 5.0857 1.77 49.60 2 -161.9392 7.4817 3 -28.9500 1.6644 1.62 36.35 4 816.7613 4.4975 STO Infinity 0.5832 5 1693.6738 9.2132 1.69 54.54 6 -37.3262 9.5218 7 56.1417 8.0038 1.62 60.34 8 -77.0102 1.2773 9 -62.9142 3.5948 1.85 23.78 10 -196.2849 36.0000 11 Infinity 1.1000 1.51 62.75 12 Infinity 0.3100 IMA / /

[0345] Table 13

[0346] Example 10

[0347] like Figure 10 As shown, the optical lens, from the object side to the image side, includes a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a filter, and an imaging plane IMA.

[0348] The first lens L1 has positive optical power, and its first side surface S1 and second side surface S2 are convex. The second lens L2 has negative optical power, and its first side surface S3 and second side surface S4 are concave. The third lens L3 has positive optical power, and its first side surface S5 and second side surface S6 are convex. The fourth lens L4 has positive optical power, and its first side surface S7 and second side surface S8 are convex. The fifth lens has negative optical power, and its first side surface S9 and second side surface S10 are convex. The filter has a first side surface S11 and a second side surface S12. Light from the object passes sequentially through surfaces S1 to S12 and is finally imaged onto the imaging plane IMA.

[0349] In this example, the focal length F of the optical lens is 50.6905mm, the total length TTL of the optical lens is 88.3333mm, and the maximum field of view FOV of the optical lens is 15.6599°.

[0350] Table 14 shows the basic structural parameters of the optical lens in Example 10, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity represents infinity.

[0351] 1 115.2302 5.0931 1.77 49.60 2 -145.2185 7.4810 3 -28.9738 1.6635 1.62 36.35 4 798.5002 4.4973 STO Infinity 0.5823 5 1418.2473 9.2124 1.69 54.54 6 -37.4861 9.5202 7 56.1345 8.0018 1.62 60.34 8 -77.0263 1.2769 9 -62.9377 3.5947 1.85 23.78 10 -196.5045 36.0000 11 Infinity 1.1000 1.51 62.75 12 Infinity 0.3100 IMA / /

[0352] Table 14

[0353] In summary, Examples 1 through 15 all satisfy the relationships shown in Table 15.

[0354]

[0355]

[0356] Table 15

[0357] Table 16 provides the overall focal length F (in millimeters) of the optical lenses in Examples 1 to 10, the optical power φ12 for the combination of the first and second lenses, the optical power φ23 for the combination of the second and third lenses, the optical power φ34 for the combination of the third and fourth lenses, and the optical power φ45 for the combination of the fourth and fifth lenses.

[0358] F 50.6701 50.6700 50.7290 50.7299 50.6966 50.6942 50.6932 50.7191 50.7003 50.6905 φ 0.0197 0.0197 0.0197 0.0197 0.0197 0.0197 0.0197 0.0197 0.0197 0.0197 FNO 1.3300 1.3300 1.3300 1.3300 1.3300 1.3300 1.3300 1.3300 1.3300 1.3300 ENPD 38.0978 38.0977 38.1421 38.1428 38.1177 38.1159 38.1152 38.1347 38.1205 38.1132 TTL 88.3333 88.3334 88.3334 88.3334 88.3333 88.3333 88.3333 88.3333 88.3333 88.3333 FOV 15.6599 15.6599 15.6599 15.6599 15.6599 15.6599 15.6601 15.6601 15.6599 15.6599 θ 0.2733 0.2733 0.2733 0.2733 0.2733 0.2733 0.2733 0.2733 0.2733 0.2733 H 13.9138 13.9242 14.1139 14.1115 13.7965 13.7680 13.7281 13.7214 14.1044 14.0836 D 40.2045 40.2135 40.5523 40.5419 41.5346 41.4955 44.3618 44.3706 39.9635 40.0422 TL 50.9233 50.9234 51.1234 51.1234 50.9233 50.9233 50.9233 50.9233 50.9233 50.9233 BFL 37.4100 37.4100 37.2100 37.2100 37.4100 37.4100 37.4100 37.4100 37.4100 37.4100 L 69.7828 69.7485 68.2254 68.2264 68.8737 68.8737 59.4078 59.4066 69.6041 69.5985 DST 42.7522 42.7387 42.4365 42.4820 40.6196 40.7226 37.3194 37.3587 42.4288 42.3205 DMAX 44.2906 44.2281 43.5720 43.6097 42.4383 42.5265 44.3618 44.3706 43.9178 43.8404 F1 94.7703 94.7596 88.9823 88.8649 80.5429 81.1388 315.9527 319.0532 83.1874 83.2455 F2 -48.2258 -48.2249 -53.9724 -54.0094 -44.6077 -44.6087 -48.5695 -48.5846 -44.5886 -44.5884 F3 52.3557 52.3720 56.2681 56.3915 51.9051 51.7231 40.2971 40.2983 52.5162 52.5373 F4 53.3837 53.3435 54.4211 54.3955 51.6814 51.8923 53.9939 54.0125 53.2375 53.2378 F5 -102.317 -102.4365 -101.5746 -101.6808 -90.5925 -91.2330 -120.616 -120.7939 -108.9948 -108.9950 SAG6 -7.2364 -7.2103 -7.1150 -7.1409 -6.8768 -6.9389 -3.5865 -3.5918 -7.1426 -7.0770 SAG7 3.7460 3.7438 3.1959 3.1962 3.5577 3.5317 2.5597 2.5609 3.6132 3.6139 SAG8 -2.1905 -2.1937 -2.5506 -2.5511 -2.0619 -2.0639 -2.5103 -2.5140 -2.4895 -2.4897 arctan(1 / K(S6)) -36.1917 -36.1174 -36.1267 -36.3011 -35.9135 -36.1464 -20.2757 -20.2820 -36.0363 -35.7858 φ12 -0.0083 -0.0083 -0.0055 -0.0054 -0.0079 -0.0080 -0.0159 -0.0160 -0.0079 -0.0080 φ23 0.0030 0.0029 0.0034 0.0034 0.0022 0.0023 0.0079 0.0079 0.0015 0.0015 φ34 0.0337 0.0337 0.0324 0.0324 0.0345 0.0345 0.0363 0.0362 0.0336 0.0336 φ45 0.0096 0.0096 0.0091 0.0091 0.0090 0.0090 0.0107 0.0107 0.0102 0.0102

[0359] Table 16

[0360] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0361] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0362] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0363] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An optical lens, characterized in that, The optical lens has five lenses with optical power, including: A first lens, the first lens having positive optical power, and the first side surface of the first lens being a convex surface; The second lens has negative optical power, and at least one of the first side surface and the second side surface of the second lens is concave. The third lens has positive optical power, and the second side surface of the third lens is convex. The fourth lens has positive optical power, and the first side surface of the fourth lens is convex, and the second side surface of the fourth lens is convex. The fifth lens has negative optical power, the first side of the fifth lens is concave, and the second side of the fifth lens is convex; The surface of each lens near the object side is the first side surface, and the surface of each lens near the image side is the second side surface. When the optical lens is a projection lens or a radar transmitting lens, the image side is the image source side, and the object side is the imaging side. The focal length F5 of the fifth lens and the total focal length F of the optical lens satisfy the following condition: -2.3816≤F5 / F≤-1.787; The maximum field of view angle θ of the optical lens, the total focal length F of the optical lens, and the image height H corresponding to the maximum field of view angle of the optical lens satisfy the following condition: 0.0042≤|(HF*θ) / (F*θ)|≤0.

018.

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

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

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

5. The optical lens according to claim 1, characterized in that, The first lens is an aspherical lens, or both the first lens and the third lens are aspherical lenses.

6. The optical lens according to any one of claims 1 to 5, characterized in that, The total focal length F of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: 3.6964≥F / H≥1.

7. The optical lens according to any one of claims 1 to 5, characterized in that, The focal length F1 of the first lens and the total focal length F of the optical lens satisfy the following condition: 0.5≤F1 / F≤9.

8. The optical lens according to any one of claims 1 to 5, characterized in that, The focal length F3 of the third lens and the focal length F4 of the fourth lens satisfy the following condition: 0.7461≤|F3 / F4|≤3.

9. The optical lens according to claim 8, characterized in that, The focal length F3 of the third lens and the focal length F4 of the fourth lens satisfy the following condition: 0.5 ≤ |F3 / F4| ≤ 1.

5.

10. The optical lens according to any one of claims 1 to 5, characterized in that, The sagitta SAG7 of the first side of the fourth lens and the sagitta SAG8 of the second side of the fourth lens satisfy the following condition: 0.5≤|SAG7 / SAG8|≤5.

11. The optical lens according to any one of claims 1 to 5, characterized in that, The combined focal length F45 of the fourth lens and the fifth lens, and the total focal length F of the optical lens satisfy the following condition: 1.8427≤F45 / F≤6.

12. The optical lens according to any one of claims 1 to 5, characterized in that, The focal length F1 of the first lens and the focal length F2 of the second lens satisfy the following condition: -6.567≤F1 / F2≤-1.

13. The optical lens according to claim 12, characterized in that, The focal length F1 of the first lens and the focal length F2 of the second lens satisfy the following condition: -6.567≤F1 / F2≤-1.

4.

14. The optical lens according to any one of claims 1 to 5, characterized in that, The radius of curvature R3 of the first side surface of the second lens and the radius of curvature R4 of the second side surface of the second lens satisfy the following condition: 0.2≤|(R3-R4) / (R3+R4)|≤3.

15. The optical lens according to any one of claims 1 to 5, characterized in that, The optical back focal length (BFL) and the optical total length (TTL) of the optical lens satisfy the following condition: 0.4235 ≥ BFL / TTL ≥ 0.

35.

16. The optical lens according to any one of claims 1 to 5, characterized in that, The sag of the second side of the third lens, SAG6, and the center thickness d6 of the third lens satisfy the following condition: 1.4359 ≥ |arctan(SAG6 / d6)| ≥ 0.

2.

17. The optical lens according to any one of claims 1 to 5, characterized in that, The maximum opening angle of the second side of the third lens, arctan(1 / K(S6)), satisfies: 36.3011≥|arctan(1 / K(S6))|≥5.

18. The optical lens according to any one of claims 1 to 5, 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: 1.33≤F / ENPD≤1.

8.

19. The optical lens according to any one of claims 1 to 5, characterized in that, The optical back focal length (BFL) of the optical lens and the lens group length (TL) of the optical lens satisfy the following condition: 0.7346 ≥ BFL / TL ≥ 0.

3.

20. The optical lens according to any one of claims 1 to 5, 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 condition: 0.5≤|F / R3|+|F / R4|≤3.

21. The optical lens according to any one of claims 1 to 5, characterized in that, The maximum field of view (FOV) of the optical lens, the total focal length (F) of the optical lens, and the image height (H) corresponding to the maximum field of view of the optical lens satisfy the following condition: 35 ≤ (FOV × F) / H ≤ 57.8852.

22. The optical lens according to any one of claims 1 to 5, characterized in that, The maximum field of view angle θ of the optical lens, the total focal length F of the optical lens, and the image height H corresponding to the maximum field of view angle of the optical lens satisfy the following condition: 1.0117≥(H / 2) / (F*tan(θ / 2))≥0.

5.

23. The optical lens according to any one of claims 1 to 5, characterized in that, The radius of curvature R7 of the first side surface of the fourth lens and the radius of curvature R8 of the second side surface of the fourth lens satisfy the following condition: 1.009 ≥ |R7 / R8| ≥ 0.

05.

24. The optical lens according to any one of claims 1 to 5, characterized in that, The focal length F2 of the second lens and the focal length F3 of the third lens satisfy the following condition: -1.2056≤F2 / F3≤0.

25. The optical lens according to any one of claims 1 to 5, characterized in that, The combined focal length F12 of the first lens and the second lens, and the total focal length F of the optical lens satisfy the following condition: -3.6504≤F12 / F≤0.

26. The optical lens according to claim 25, characterized in that, The combined focal length F12 of the first lens and the second lens, and the total focal length F of the optical lens satisfy the following condition: -3.6504≤F12 / F≤-0.

5.

27. The optical lens according to any one of claims 1 to 5, characterized in that, The air gap d23 between the second lens and the third lens on the optical axis of the optical lens, the center thickness T2 of the second lens, and the center thickness T3 of the third lens satisfy the following: 0.1≤d23 / (T2+T3)≤2.

28. The optical lens according to any one of claims 1 to 5, characterized in that, The air gap d23 between the second lens and the third lens on the optical axis of the optical lens, the optical back focal length BFL of the optical lens, and the combined focal length F45 of the fourth lens and the fifth lens satisfy the following: 4.0524≥d23*BFL / F45≥1.

29. The optical lens according to claim 28, characterized in that, The air gap d23 between the second lens and the third lens on the optical axis of the optical lens, the optical back focal length BFL of the optical lens, and the combined focal length F45 of the fourth lens and the fifth lens satisfy the following: 4.0524≥d23*BFL / F45≥2.

30. The optical lens according to any one of claims 1 to 5, characterized in that, The radius of curvature R1 of the first side surface of the first lens and the focal length F1 of the first lens satisfy the following condition: 0 ≤ R1 / F1 ≤ 20.

31. The optical lens according to claim 30, characterized in that, The radius of curvature R1 of the first side surface of the first lens and the focal length F1 of the first lens satisfy the following condition: 0 ≤ R1 / F1 ≤ 5.

32. The optical lens according to any one of claims 1 to 5, characterized in that, The following conditions must be met: 1.1≤F1 / F≤6.5, 0.8≤|SAG7 / SAG8|≤2, 1.2≤F45 / F≤4, 0.5≤|(R3-R4) / (R3+R4)|≤1.5, 0.9≤|F / R3|+|F / R4|≤3, 0.2≤d23 / (T2+T3)≤1, where... The following parameters are included: the overall focal length F of the optical lens, the focal length F1 of the first lens, the sagitta SAG7 of the first side of the fourth lens, the sagitta SAG8 of the second side of the fourth lens, the combined focal length F45 of the fourth lens and the fifth lens, the radius of curvature R3 of the first side of the second lens, the radius of curvature R4 of the second side of the second lens, the air gap d23 between the second lens and the third lens on the optical axis of the optical lens, the center thickness T2 of the second lens, and the center thickness T3 of the third lens.

33. The optical lens according to any one of claims 1 to 5, characterized in that, The following conditions must be met: 3.6964 ≥ F / H ≥ 3.5943, 1.5887 ≤ F1 / F ≤ 6.2906, 0.7461 ≤ |F3 / F4| ≤ 1.0367, 1.0187 ≤ |SAG7 / SAG8| ≤ 1.7254, 1.8427 ≤ F45 / F ≤ 2.1918, -6.567 ≤ F1 / F2 ≤ -1.6454, 0.7596 ≤ |(R3-R4) / (R3+R4)| ≤ 1.147, 0.4235 ≥ BFL / TTL ≥ 0.4212, 1.4359 ≥ |arctan(SAG6 / d6)| ≥ 0.652, 36.3011 ≥ |arctan(1 / K(S6))| ≥ 20.2757, 1. 33≤F / ENPD≤1.8, 0.7346≥BFL / TL≥0.7278, 1.6006≤|F / R3|+|F / R4|≤1.8134, 56 .2857≤(FOV×F) / H≤57.8852, 1.0117≥(H / 2) / (F*tan(θ / 2))≥0.9837, 1.009≥|R 7 / R8|≥0.6243, -1.2056≤F2 / F3≤-0.8487, -3.6504≤F12 / F≤-1.2323, 0.3776≤d23 / (T2+T3)≤0.5206, 4.0524≥d23*BFL / F45≥3.1999, 0.1421≤R1 / F1≤12.424, where The following parameters are included: the overall focal length F of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, the focal length F1 of the first lens, the focal length F3 of the third lens, the focal length F4 of the fourth lens, the sagitta SAG7 of the first side of the fourth lens, the sagitta SAG8 of the second side of the fourth lens, the combined focal length F45 of the fourth and fifth lenses, the focal length F2 of the second lens, the radius of curvature R3 of the first side of the second lens, the radius of curvature R4 of the second side of the second lens, the radian value θ of the maximum field of view of the optical lens, the optical back focal length BFL of the optical lens, the total optical length TTL of the optical lens, and the second focal length of the third lens. The following parameters are considered: side height SAG6, center thickness d6 of the third lens, maximum angle of the second side of the third lens arctan(1 / K(S6)), entrance pupil diameter ENPD of the optical lens, lens group length TL of the optical lens, maximum field of view FOV of the optical lens, radius of curvature R7 of the first side of the fourth lens, radius of curvature R8 of the second side of the fourth lens, combined focal length F12 of the first and second lenses, air gap d23 between the second and third lenses on the optical axis of the optical lens, center thickness T2 of the second lens, center thickness T3 of the third lens, and radius of curvature R1 of the first side of the first lens.

34. The optical lens according to any one of claims 1 to 5, characterized in that, The following conditions must be met: 3.6964 ≥ F / H ≥ 3.5, 1.2 ≤ F1 / F ≤ 7, -10 ≤ F1 / F2 ≤ -1.4, 0.4 ≤ BFL / TTL ≤ 0.45, 1 ≤ |F / R3| + |F / R4| ≤ 2, 55 ≤ (FOV × F) / H ≤ 57.8852, 1.0117 ≥ (H / 2) / (F*tan(θ / 2)) ≥ 0.8, -5 ≤ F2 / F3 ≤ -0.6, where... The following parameters are included: the total focal length F of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, the focal length F1 of the first lens, the focal length F3 of the third lens, the focal length F2 of the second lens, the radius of curvature R3 of the first side surface of the second lens, the radius of curvature R4 of the second side surface of the second lens, the radian value θ of the maximum field of view of the optical lens, the optical back focal length BFL of the optical lens, the total optical length TTL of the optical lens, and the maximum field of view FOV of the optical lens.

35. The optical lens according to any one of claims 1 to 5, characterized in that, The following conditions must be met: 2.8 ≤ F / H ≤ 6, 1.0117 ≥ (H / 2) / (F*tan(θ / 2)) ≥ 0.9, -3.6504 ≤ F12 / F ≤ -1.25, where... The parameters include: the total focal length F of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, the radian value θ of the maximum field of view of the optical lens, and the combined focal length F12 of the first lens and the second lens.

36. The optical lens according to any one of claims 1 to 5, characterized in that, The following conditions must be met: at least one of the following relations: 0.8 ≤ (H / 2) / (F*tan(θ / 2)) ≤ 2, -8 ≤ F12 / F ≤ -0.5, where The parameters include: the total focal length F of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, the radian value θ of the maximum field of view of the optical lens, and the combined focal length F12 of the first lens and the second lens.

37. The optical lens according to any one of claims 1 to 5, characterized in that, The following conditions must be met: -6.567 ≤ F1 / F2 ≤ -1.4, -3.6504 ≤ F12 / F ≤ -0.5, where... The following parameters are included: the focal length F1 of the first lens, the focal length F2 of the second lens, the total focal length F of the optical lens group, and the combined focal length F12 of the first lens and the second lens.

38. The optical lens according to any one of claims 1 to 5, characterized in that, The following conditions must be met: 3.6964 ≥ F / H ≥ 2.8, -6.567 ≤ F1 / F2 ≤ -1.2, 0.4 ≤ BFL / TTL ≤ 0.4235, 1.4359 ≥ |arctan(SAG6 / d6)| ≥ 0.5, 36.3011 ≥ |arctan(1 / K(S6))| ≥ 15, 1.33 ≤ F / ENPD ≤ 1.5, 0.734 6≥BFL / TL≥0.5, 45≤(FOV×F) / H≤57.8852, 1.0117≥(H / 2) / (F*tan(θ / 2))≥0.6, 1.009≥|R7 / R8|≥0.2, -1.2056≤F2 / F3≤-0.6, -3.6504≤F12 / F≤-0.005, 4.0524≥d23*BFL / F45≥2, where The following parameters are included: the overall focal length F of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, the focal length F1 of the first lens, the focal length F3 of the third lens, the combined focal length F45 of the fourth and fifth lenses, the focal length F2 of the second lens, the radian value θ of the maximum field of view of the optical lens, the optical back focal length BFL of the optical lens, the total optical length TTL of the optical lens, the sagitta SAG6 of the second side of the third lens, the center thickness d6 of the third lens, the maximum subtended angle arctan(1 / K(S6)) of the second side of the third lens, the entrance pupil diameter ENPD of the optical lens, the lens group length TL of the optical lens, the maximum field of view FOV of the optical lens, the radius of curvature R7 of the first side of the fourth lens, the radius of curvature R8 of the second side of the fourth lens, the combined focal length F12 of the first and second lenses, and the air gap d23 between the second and third lenses on the optical axis of the optical lens.

39. An optical lens, characterized in that, The optical lens has five lenses with optical power, including: A first lens, the first lens having positive optical power; A second lens, the second lens having negative optical power; A third lens, wherein the third lens has positive optical power; A fourth lens, wherein the fourth lens has positive optical power; The fifth lens has a negative optical power; The surface of each lens near the object side is the first side surface, and the surface of each lens near the image side is the second side surface. When the optical lens is a projection lens or a radar transmitting lens, the image side is the image source side, and the object side is the imaging side. The optical back focal length (BFL) and the optical total length (TTL) of the optical lens satisfy the following condition: 0.4235 ≥ BFL / TTL ≥ 0.35; The focal length F5 of the fifth lens and the total focal length F of the optical lens satisfy the following condition: -2.3816≤F5 / F≤-1.787; The maximum field of view angle θ of the optical lens, the total focal length F of the optical lens, and the image height H corresponding to the maximum field of view angle of the optical lens satisfy the following condition: 0.0042≤|(HF*θ) / (F*θ)|≤0.

018.

40. The optical lens according to claim 39, characterized in that, The first side surface of the first lens is a convex surface, and the second side surface of the first lens is a convex surface, a concave surface, or a plane.

41. The optical lens according to claim 39, characterized in that, The first side surface of the second lens is concave, and the second side surface of the second lens is concave; or The first side surface of the second lens is concave, and the second side surface of the second lens is convex; or The first side surface of the second lens is convex, and the second side surface of the second lens is concave; or The first side surface of the second lens is a plane, and the second side surface of the second lens is a concave surface; or The first side surface of the second lens is concave, and the second side surface of the second lens is flat.

42. The optical lens according to claim 39, characterized in that, The first side surface of the third lens is a convex surface, a concave surface, or a plane, and the second side surface of the third lens is a convex surface.

43. The optical lens according to claim 39, characterized in that, The first side surface of the fourth lens is convex, and the second side surface of the fourth lens is convex.

44. The optical lens according to claim 39, characterized in that, The first side surface of the fifth lens is concave, and the second side surface of the fifth lens is convex.

45. The optical lens according to claim 39, characterized in that, The first lens is an aspherical lens, or both the first lens and the third lens are aspherical lenses.

46. ​​The optical lens according to any one of claims 39 to 45, characterized in that, The total focal length F of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: 3.6964≥F / H≥1.

47. The optical lens according to any one of claims 39 to 45, characterized in that, The focal length F1 of the first lens and the total focal length F of the optical lens satisfy the following condition: 0.5≤F1 / F≤9.

48. The optical lens according to any one of claims 39 to 45, characterized in that, The focal length F3 of the third lens and the focal length F4 of the fourth lens satisfy the following condition: 0.7461≤|F3 / F4|≤3.

49. The optical lens according to claim 48, characterized in that, The focal length F3 of the third lens and the focal length F4 of the fourth lens satisfy the following condition: 0.5 ≤ |F3 / F4| ≤ 1.

5.

50. The optical lens according to any one of claims 39 to 45, characterized in that, The sagitta SAG7 of the first side of the fourth lens and the sagitta SAG8 of the second side of the fourth lens satisfy the following condition: 0.5≤|SAG7 / SAG8|≤5.

51. The optical lens according to any one of claims 39 to 45, characterized in that, The combined focal length F45 of the fourth lens and the fifth lens, and the total focal length F of the optical lens satisfy the following condition: 1.8427≤F45 / F≤6.

52. The optical lens according to any one of claims 39 to 45, characterized in that, The focal length F1 of the first lens and the focal length F2 of the second lens satisfy the following condition: -6.567≤F1 / F2≤-1.

53. The optical lens according to claim 52, characterized in that, The focal length F1 of the first lens and the focal length F2 of the second lens satisfy the following condition: -6.567≤F1 / F2≤-1.

4.

54. The optical lens according to any one of claims 39 to 45, characterized in that, The radius of curvature R3 of the first side surface of the second lens and the radius of curvature R4 of the second side surface of the second lens satisfy the following condition: 0.2≤|(R3-R4) / (R3+R4)|≤3.

55. The optical lens according to any one of claims 39 to 45, characterized in that, The sag of the second side of the third lens, SAG6, and the center thickness d6 of the third lens satisfy the following condition: 1.4359 ≥ |arctan(SAG6 / d6)| ≥ 0.

2.

56. The optical lens according to any one of claims 39 to 45, characterized in that, The maximum opening angle of the second side of the third lens, arctan(1 / K(S6)), satisfies: 36.3011≥|arctan(1 / K(S6))|≥5.

57. The optical lens according to any one of claims 39 to 45, 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: 1.33≤F / ENPD≤1.

8.

58. The optical lens according to any one of claims 39 to 45, characterized in that, The optical back focal length (BFL) of the optical lens and the lens group length (TL) of the optical lens satisfy the following condition: 0.7346 ≥ BFL / TL ≥ 0.

3.

59. The optical lens according to any one of claims 39 to 45, 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 condition: 0.5≤|F / R3|+|F / R4|≤3.

60. The optical lens according to any one of claims 39 to 45, characterized in that, The maximum field of view (FOV) of the optical lens, the total focal length (F) of the optical lens, and the image height (H) corresponding to the maximum field of view of the optical lens satisfy the following condition: 35 ≤ (FOV × F) / H ≤ 57.8852.

61. The optical lens according to any one of claims 39 to 45, characterized in that, The maximum field of view angle θ of the optical lens, the total focal length F of the optical lens, and the image height H corresponding to the maximum field of view angle of the optical lens satisfy the following condition: 1.0117≥(H / 2) / (F*tan(θ / 2))≥0.

5.

62. The optical lens according to any one of claims 39 to 45, characterized in that, The radius of curvature R7 of the first side surface of the fourth lens and the radius of curvature R8 of the second side surface of the fourth lens satisfy the following condition: 1.009 ≥ |R7 / R8| ≥ 0.

05.

63. The optical lens according to any one of claims 39 to 45, characterized in that, The focal length F2 of the second lens and the focal length F3 of the third lens satisfy the following condition: -1.2056≤F2 / F3≤0.

64. The optical lens according to any one of claims 39 to 45, characterized in that, The combined focal length F12 of the first lens and the second lens, and the total focal length F of the optical lens satisfy the following condition: -3.6504≤F12 / F≤-0.

1.

65. The optical lens according to claim 64, characterized in that, The combined focal length F12 of the first lens and the second lens, and the total focal length F of the optical lens satisfy the following condition: -3.6504≤F12 / F≤-0.

5.

66. The optical lens according to any one of claims 39 to 45, characterized in that, The air gap d23 between the second lens and the third lens on the optical axis of the optical lens, the center thickness T2 of the second lens, and the center thickness T3 of the third lens satisfy the following: 0.1≤d23 / (T2+T3)≤2.

67. The optical lens according to any one of claims 39 to 45, characterized in that, The air gap d23 between the second lens and the third lens on the optical axis of the optical lens, the optical back focal length BFL of the optical lens, and the combined focal length F45 of the fourth lens and the fifth lens satisfy the following: 4.0524≥d23*BFL / F45≥1.

68. The optical lens according to claim 67, characterized in that, The air gap d23 between the second lens and the third lens on the optical axis of the optical lens, the optical back focal length BFL of the optical lens, and the combined focal length F45 of the fourth lens and the fifth lens satisfy the following: 4.0524≥d23*BFL / F45≥2.

69. The optical lens according to any one of claims 39 to 45, characterized in that, The radius of curvature R1 of the first side surface of the first lens and the focal length F1 of the first lens satisfy the following condition: 0 ≤ R1 / F1 ≤ 5.

70. The optical lens according to claim 69, characterized in that, The radius of curvature R1 of the first side surface of the first lens and the focal length F1 of the first lens satisfy the following condition: 0 ≤ R1 / F1 ≤ 20.

71. The optical lens according to any one of claims 39 to 45, characterized in that, The following conditions must be met: 1.1≤F1 / F≤6.5, 0.8≤|SAG7 / SAG8|≤2, 1.2≤F45 / F≤4, 0.5≤|(R3-R4) / (R3+R4)|≤1.5, 0.9≤|F / R3|+|F / R4|≤3, 0.2≤d23 / (T2+T3)≤1, where... The following parameters are included: the overall focal length F of the optical lens, the focal length F1 of the first lens, the sagitta SAG7 of the first side of the fourth lens, the sagitta SAG8 of the second side of the fourth lens, the combined focal length F45 of the fourth lens and the fifth lens, the radius of curvature R3 of the first side of the second lens, the radius of curvature R4 of the second side of the second lens, the air gap d23 between the second lens and the third lens on the optical axis of the optical lens, the center thickness T2 of the second lens, and the center thickness T3 of the third lens.

72. The optical lens according to any one of claims 39 to 45, characterized in that, The following conditions must be met: 3.6964 ≥ F / H ≥ 3.5943, 1.5887 ≤ F1 / F ≤ 6.2906, 0.7461 ≤ |F3 / F4| ≤ 1.0367, 1.0187 ≤ |SAG7 / SAG8| ≤ 1.7254, 1.8427 ≤ F45 / F ≤ 2.1918, -6.567 ≤ F1 / F2 ≤ -1.6454, 0.7596 ≤ |(R3-R4) / (R3+R4)| ≤ 1.147, 0.4235 ≥ BFL / TTL ≥ 0.4212, 1.4359 ≥ |arctan(SAG6 / d6)| ≥ 0.652, 36.3011 ≥ |arctan(1 / K(S6))| ≥ 20.2757, 1. 33≤F / ENPD≤1.8, 0.7346≥BFL / TL≥0.7278, 1.6006≤|F / R3|+|F / R4|≤1.8134, 56 .2857≤(FOV×F) / H≤57.8852, 1.0117≥(H / 2) / (F*tan(θ / 2))≥0.9837, 1.009≥|R 7 / R8|≥0.6243, -1.2056≤F2 / F3≤-0.8487, -3.6504≤F12 / F≤-1.2323, 0.3776≤d23 / (T2+T3)≤0.5206, 4.0524≥d23*BFL / F45≥3.1999, 0.1421≤R1 / F1≤12.424, where The following parameters are included: the overall focal length F of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, the focal length F1 of the first lens, the focal length F3 of the third lens, the focal length F4 of the fourth lens, the sagitta SAG7 of the first side of the fourth lens, the sagitta SAG8 of the second side of the fourth lens, the combined focal length F45 of the fourth and fifth lenses, the focal length F2 of the second lens, the radius of curvature R3 of the first side of the second lens, the radius of curvature R4 of the second side of the second lens, the radian value θ of the maximum field of view of the optical lens, the optical back focal length BFL of the optical lens, the total optical length TTL of the optical lens, and the second focal length of the third lens. The following parameters are considered: side height SAG6, center thickness d6 of the third lens, maximum angle of the second side of the third lens arctan(1 / K(S6)), entrance pupil diameter ENPD of the optical lens, lens group length TL of the optical lens, maximum field of view FOV of the optical lens, radius of curvature R7 of the first side of the fourth lens, radius of curvature R8 of the second side of the fourth lens, combined focal length F12 of the first and second lenses, air gap d23 between the second and third lenses on the optical axis of the optical lens, center thickness T2 of the second lens, center thickness T3 of the third lens, and radius of curvature R1 of the first side of the first lens.

73. The optical lens according to any one of claims 39 to 45, characterized in that, The following conditions must be met: 3.6964 ≥ F / H ≥ 3.5, 1.2 ≤ F1 / F ≤ 7, -10 ≤ F1 / F2 ≤ -1.4, 0.4 ≤ BFL / TTL ≤ 0.45, 1 ≤ |F / R3| + |F / R4| ≤ 2, 55 ≤ (FOV × F) / H ≤ 57.8852, 1.0117 ≥ (H / 2) / (F*tan(θ / 2)) ≥ 0.8, -5 ≤ F2 / F3 ≤ -0.6, where... The following parameters are included: the total focal length F of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, the focal length F1 of the first lens, the focal length F3 of the third lens, the focal length F2 of the second lens, the radius of curvature R3 of the first side surface of the second lens, the radius of curvature R4 of the second side surface of the second lens, the radian value θ of the maximum field of view of the optical lens, the optical back focal length BFL of the optical lens, the total optical length TTL of the optical lens, and the maximum field of view FOV of the optical lens.

74. The optical lens according to any one of claims 39 to 45, characterized in that, The following conditions must be met: 2.8 ≤ F / H ≤ 6, 1.0117 ≥ (H / 2) / (F*tan(θ / 2)) ≥ 0.9, -3.6504 ≤ F12 / F ≤ -1.25, where... The parameters include: the total focal length F of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, the radian value θ of the maximum field of view of the optical lens, and the combined focal length F12 of the first lens and the second lens.

75. The optical lens according to any one of claims 39 to 45, characterized in that, The following conditions must be met: at least one of the following relations: 0.8 ≤ (H / 2) / (F*tan(θ / 2)) ≤ 2, -8 ≤ F12 / F ≤ -0.5, where The parameters include: the total focal length F of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, the radian value θ of the maximum field of view of the optical lens, and the combined focal length F12 of the first lens and the second lens.

76. The optical lens according to any one of claims 39 to 45, characterized in that, The following conditions must be met: -6.567 ≤ F1 / F2 ≤ -1.4, -3.6504 ≤ F12 / F ≤ -0.5, where... The following parameters are included: the focal length F1 of the first lens, the focal length F2 of the second lens, the total focal length F of the optical lens group, and the combined focal length F12 of the first lens and the second lens.

77. The optical lens according to any one of claims 39 to 45, characterized in that, The following conditions must be met: 3.6964 ≥ F / H ≥ 2.8, -6.567 ≤ F1 / F2 ≤ -1.2, 0.4 ≤ BFL / TTL ≤ 0.4235, 1.4359 ≥ |arctan(SAG6 / d6)| ≥ 0.5, 36.3011 ≥ |arctan(1 / K(S6))| ≥ 15, 1.33 ≤ F / ENPD ≤ 1.5, 0.734 6≥BFL / TL≥0.5, 45≤(FOV×F) / H≤57.8852, 1.0117≥(H / 2) / (F*tan(θ / 2))≥0.6, 1.009≥|R7 / R8|≥0.2, -1.2056≤F2 / F3≤-0.6, -3.6504≤F12 / F≤-0.005, 4.0524≥d23*BFL / F45≥2, where The following parameters are included: the overall focal length F of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, the focal length F1 of the first lens, the focal length F3 of the third lens, the combined focal length F45 of the fourth and fifth lenses, the focal length F2 of the second lens, the radian value θ of the maximum field of view of the optical lens, the optical back focal length BFL of the optical lens, the total optical length TTL of the optical lens, the sagitta SAG6 of the second side of the third lens, the center thickness d6 of the third lens, the maximum subtended angle arctan(1 / K(S6)) of the second side of the third lens, the entrance pupil diameter ENPD of the optical lens, the lens group length TL of the optical lens, the maximum field of view FOV of the optical lens, the radius of curvature R7 of the first side of the fourth lens, the radius of curvature R8 of the second side of the fourth lens, the combined focal length F12 of the first and second lenses, and the air gap d23 between the second and third lenses on the optical axis of the optical lens.

78. An electronic device, characterized in that, It includes an optical lens as described in any one of claims 1 to 77 and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

Images