Optical lens and electronic equipment

Abstract

The invention discloses an optical lens and electronic equipment. The optical lens sequentially comprises a first lens with negative focal power from a first side to a second side along an optical axis, wherein the second side surface of the first lens is a concave surface; the second lens has focal power; the third lens has positive focal power; the fourth lens has focal power; the fifth lens has focal power; the sixth lens has focal power; a seventh lens with focal power; the eighth lens has positive focal power; the ninth lens has positive focal power; wherein the focal power of the fourth lens is opposite to that of the fifth lens, or the focal power of the fifth lens is opposite to that of the sixth lens, or the focal power of the sixth lens is opposite to that of the seventh lens, or the focal power of the seventh lens is opposite to that of the eighth lens; the number of the lenses with focal power in the optical lens is nine; the optical lens meets the condition that (T12 + T23 + T34) / TL is larger than or equal to 0.244 and smaller than or equal to 0.703.

Description

Technical Field

[0001] This application relates to the field of optical components, and more specifically, to an optical lens and electronic device. Background Technology

[0002] In recent years, automotive driver assistance technology has become increasingly popular among users, leading to a growing demand for in-vehicle cameras used to acquire external information about the vehicle. In-vehicle cameras are optical lenses installed on automobiles to perform various functions, including, for example, interior cameras, rearview cameras, front cameras, side cameras, surround view cameras, and projection headlight lenses.

[0003] High resolution is a core competitive advantage for automotive projection headlight lenses. However, with the use of large-capacity chips, higher demands are being placed on the resolution capabilities of optical lenses that can be used as automotive lenses. The inventors of this application have discovered that automotive in-cabin projection lenses have high imaging requirements, but current automotive in-cabin projection lenses cannot simultaneously meet the design requirements for performance aspects such as distortion, chromatic aberration, and size. Summary of the Invention

[0004] The first aspect of this application provides an optical lens comprising, along the optical axis from a first side to a second side, a first lens having negative optical power, the second side of which is concave; a second lens having optical power; a third lens having positive optical power; a fourth lens having optical power; a fifth lens having optical power; a sixth lens having optical power; a seventh lens having optical power; an eighth lens having positive optical power; and a ninth lens having positive optical power; wherein the optical powers of the fourth and fifth lenses are opposite, or the optical powers of the fifth and sixth lenses are opposite, or the optical powers of the sixth and seventh lenses are opposite, or the optical powers of the seventh and eighth lenses are opposite; the number of lenses having optical power in the optical lens is nine; and the optical lens satisfies: 0.244 ≤ (T12 + T23 + T34) / TL ≤ 0.703. T12 is the air gap between the first and second lenses, T23 is the air gap between the second and third lenses, T34 is the air gap between the third and fourth lenses, and TL is the length of the lens group of the optical lens.

[0005] The second aspect of this application provides an electronic device comprising an optical lens as described in the exemplary embodiments above, and at least one of an imaging element and a light source, wherein the imaging element is used to convert an optical image or optical information formed by the optical lens into an electrical signal, the light source is located on a second side of the optical lens, and the light emitted by the light source is projected onto a first side of the optical lens after passing through the optical lens, forming an image or an illuminated area on the first side of the optical lens.

[0006] One example is that the first side surface of the first lens is convex; or, the first side surface of the first lens is concave.

[0007] One example is that the second lens has negative optical power, and the first side of the second lens is concave, and the second side of the second lens is concave; or, the second lens has negative optical power, and the first side of the second lens is planar, and the second side of the second lens is concave; or, the second lens has negative optical power, and the first side of the second lens is convex, and the second side of the second lens is concave; or, the second lens has negative optical power, and the first side of the second lens is concave, and the second side of the second lens is planar; or, the second lens has negative optical power, and the first side of the second lens is concave, and the second side of the second lens is convex; or, the second lens has positive optical power, and the first side of the second lens is concave, and the second side of the second lens is convex.

[0008] One example is that the first side surface of the third lens is convex and the second side surface of the third lens is convex; or, the first side surface of the third lens is flat and the second side surface of the third lens is convex; or, the first side surface of the third lens is concave and the second side surface of the third lens is convex; or, the first side surface of the third lens is convex and the second side surface of the third lens is flat; or, the first side surface of the third lens is convex and the second side surface of the third lens is concave.

[0009] One example is that the fourth lens has negative optical power, with a first concave side and a second concave side; or, the fourth lens has negative optical power, with a first convex side and a second concave side; or, the fourth lens has negative optical power, with a first concave side and a second flat side; or, the fourth lens has negative optical power, with a first concave side and a second convex side; or, the fourth lens has positive optical power, with a first convex side and a second convex side; or, the fourth lens has positive optical power, with a first concave side and a second convex side.

[0010] One example is that the fifth lens has positive optical power, and the first side of the fifth lens is convex, and the second side of the fifth lens is convex; or, the fifth lens has positive optical power, and the first side of the fifth lens is flat, and the second side of the fifth lens is convex; or, the fifth lens has positive optical power, and the first side of the fifth lens is concave, and the second side of the fifth lens is convex; or, the fifth lens has positive optical power, and the first side of the fifth lens is convex, and the second side of the fifth lens is concave; or, the fifth lens has negative optical power, and the first side of the fifth lens is concave, and the second side of the fifth lens is concave; or, the fifth lens has negative optical power, and the first side of the fifth lens is concave, and the second side of the fifth lens is convex; or, the fifth lens has negative optical power, and the first side of the fifth lens is convex, and the second side of the fifth lens is concave.

[0011] One example is that the sixth lens has positive optical power, and the first side of the sixth lens is convex, and the second side of the sixth lens is convex; or, the sixth lens has positive optical power, and the first side of the sixth lens is concave, and the second side of the sixth lens is convex; or, the sixth lens has negative optical power, and the first side of the sixth lens is concave, and the second side of the sixth lens is concave; or, the sixth lens has negative optical power, and the first side of the sixth lens is concave, and the second side of the sixth lens is convex.

[0012] One example is that the seventh lens has negative optical power, the first side of the seventh lens is concave, and the second side of the seventh lens is concave; or, the seventh lens has negative optical power, the first side of the seventh lens is concave, and the second side of the seventh lens is convex; or, the seventh lens has negative optical power, the first side of the seventh lens is concave, and the second side of the seventh lens is flat; or, the seventh lens has negative optical power, the first side of the seventh lens is convex, and the second side of the seventh lens is concave; or, the seventh lens has positive optical power, the first side of the seventh lens is convex, and the second side of the seventh lens is convex.

[0013] One example is that the first side surface of the eighth lens is convex and the second side surface of the eighth lens is convex; or, the first side surface of the eighth lens is concave and the second side surface of the eighth lens is convex; or, the first side surface of the eighth lens is flat and the second side surface of the eighth lens is convex.

[0014] One example is that the first side surface of the ninth lens is convex and the second side surface of the ninth lens is convex; or, the first side surface of the ninth lens is flat and the second side surface of the ninth lens is convex; or, the first side surface of the ninth lens is concave and the second side surface of the ninth lens is convex.

[0015] The letters in this application have the following meanings: F is the total focal length of the optical lens, TTL is the total optical length of the optical lens, BFL is the optical back focal length of the optical lens, FOV is the maximum field of view of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, DMAX is the maximum value of the maximum aperture of all lenses in the optical lens, θ is the radian value of the maximum field of view of the optical lens, D is the maximum aperture of the first side of the first lens corresponding to the maximum field of view of the optical lens, ENPD is the entrance pupil diameter of the optical lens, and DS... T represents the effective aperture of the optical lens stop; F1 is the focal length of the first lens; F2 is the focal length of the second lens; F3 is the focal length of the third lens; F4 is the focal length of the fourth lens; F5 is the focal length of the fifth lens; F45 is the combined focal length of the fourth and fifth lenses; F9 is the focal length of the ninth lens; F6 is the focal length of the sixth lens; R7 is the central radius of curvature of the first side of the fourth lens; R8 is the central radius of curvature of the second side of the fourth lens; F7 is the focal length of the seventh lens; F8 is the focal length of the eighth lens; F6-8 are the combined focal lengths of the sixth to eighth lenses; R17 is the central radius of curvature of the first side of the ninth lens; R18 is the central radius of curvature of the second side of the ninth lens; T45 is the focal length of the fourth and fifth lenses combined. The air gaps between lenses are as follows: T56 is the air gap between the fifth and sixth lenses; T67 is the air gap between the sixth and seventh lenses; T78 is the air gap between the seventh and eighth lenses; T89 is the air gap between the eighth and ninth lenses; Vd6 is the Abbe number of the sixth lens; Vd7 is the Abbe number of the seventh lens; Vd8 is the Abbe number of the eighth lens; n6 is the refractive index of the sixth lens; CT6 is the center thickness of the sixth lens; n7 is the refractive index of the seventh lens; CT7 is the center thickness of the seventh lens; n8 is the refractive index of the eighth lens; CT8 is the center thickness of the eighth lens; MAX(T12, T23, T34) / TL is the maximum value among T12 / TL, T23 / TL, and T34 / TL.

[0016] An example is an optical lens that satisfies at least one of the following relationships: 0.094≤F / TTL≤0.205, 1.435≤BFL / F≤3.18, 44.746°≤(FOV×F) / H≤65.134°, 0.133°≤TTL / H / FOV≤0.313°, 3.329≤TTL / DMAX≤6.188, 0.382≤(F*θ) / D≤0.802 0.027°≤D / H / FOV≤0.049°, 0.063≤D / H / F*mm≤0.202, 0.829≤F / H≤1.904, 1.7≤F / ENPD≤2.99, 0.077≤F / ENPD / D*mm≤0.183, 0.627≤DST / F≤1.332 or 0.818≤(H / 2) / (F*tan(θ / 2))≤1.173.

[0017] One example is an optical lens that satisfies at least one of the following relationships: -11.583≤F1 / F≤-1.247 or 0.054≤|F1 / F2|≤12.962.

[0018] One example is an optical lens that satisfies at least one of the following relationships: 0.76 ≤ |F2 / F| ≤ 32.015 or 0.399 ≤ |F2 / F3| ≤ 3.908.

[0019] One example is an optical lens that satisfies at least one of the following relationships: 0.995≤F3 / F≤9.422 or 0.071≤|F3 / F4|≤4.001.

[0020] An example is an optical lens that satisfies at least one of the following relationships: 1.087≤|F4 / F|≤23.408, 0.944≤|F5 / F|≤10.681, 0.279≤|F4 / F9|≤10.14, 0.632≤|F4 / F5|≤8.09, 0.396≤|F5 / F6|≤4.03 or 1.137≤|(R7*R8) / F4|.

[0021] One example is an optical lens that satisfies at least one of the following relationships: 0.841≤|F6 / F|≤3.23, 0.639≤|F7 / F|≤8.233, 1.77≤F8 / F≤4.497, 0.187≤|F6 / F7|≤2.49, or 0.307≤|F7 / F8|≤3.717.

[0022] An example is an optical lens that satisfies at least one of the following relationships: 1.901≤F9 / F≤4.993, 0.498≤F8 / F9≤1.45, or 27.333≤|R17*R18 / F9|.

[0023] One example is that the optical lens satisfies at least one of the following relationships: 0.002≤(T45+T56+T67+T78) / (T12+T23+T34+T45+T56+T67+T78+T89)≤0.309, 0.258≤(T12+T23+T34+T45+T56+T67+T78+T89) / TL≤0.738 or 0.143≤MAX(T12, T23, T34) / TL≤0.515.

[0024] One example is that the optical back focal length (BFL) of an optical lens and the optical total length (TTL) of the optical lens satisfy the following condition: 0.28 ≤ BFL / TTL ≤ 0.407.

[0025] For example, the focal lengths of the sixth lens (F6), the seventh lens (F7), and the eighth lens (F8) satisfy the following condition: 0.007 ≤ |F6 / F7 / F8|*mm ≤ 0.078.

[0026] One example is an optical lens that satisfies: 0.014≤|(Vd6 / F6+Vd7 / F7+Vd8 / F8) / (n6*CT6+n7*CT7+n8*CT8)|≤0.198.

[0027] An example is an optical lens that satisfies at least one of the following relationships:

[0028] 0.287 ≤ (T12 + T23 + T34) / TL ≤ 0.611, 0.11 ≤ F / TTL ≤ 0.178, 1.688 ≤ BFL / F ≤ 2.765, 52.642° ≤ (FOV × F) / H ≤ 56.638°, 0.156° ≤ TTL / H / FOV ≤ 0.272°, 3.917 ≤ TTL / DMAX ≤ 5.381, 0.449 ≤ (F*θ) / D ≤ 0.697, 0.032° ≤ D / H / FOV ≤ 0.043°, 0.074 ≤ D / H / F*mm ≤ 0.176, 0.975 ≤ F / H ≤ 1.656, 2 ≤ F / ENP D ≤ 2.6, 0.091 ≤ F / ENPD / D*mm ≤ 0.159, 0.738 ≤ DST / F ≤ 1.158, 0.962 ≤ (H / 2) / (F*tan(θ / 2)) ≤ 1.02, -10.072 ≤ F1 / F ≤ -1.467, 0.063 ≤ |F1 / F2| ≤ 11.271, 0.894 ≤ |F2 / F| ≤ 27.839, 0.469 ≤ |F2 / F3| ≤ 3.398, 1.17 ≤ F3 / F ≤ 8.193, 0.083 ≤ |F3 / F4| ≤ 3.479, 1.279 ≤ |F4 / F| ≤ 20.355, 1.11 ≤ |F5 / F| ≤ 9.288, 0.328 ≤ |F4 / F9| ≤ 8.817, 0.744 ≤ |F4 / F5| ≤ 7.035, 0.466 ≤ |F5 / F6| ≤ 3.504, 1.338 ≤ |(R7*R8) / F4| ≤ 91466.662, 0.989 ≤ |F6 / F| ≤ 2.809, 0.752 ≤ |F7 / F| ≤ 7.159, 2.082 ≤ F8 / F ≤ 3.91, 0.22 ≤ |F6 / F7| ≤ 2.165, 0.361 ≤ |F7 / F8| ≤ 3.232, 2.237 ≤ F9 / F ≤ 4.342, 0.586 ≤ F8 / F9 ≤ 1.261, 32.156 ≤ |R17*R18 / F9| ≤ 96646.771, 0.002 ≤ (T45 + T56 + T67 + T78) / (T12 + T23 + T34 + T45 + T56 + T67 + T78 + T89) ≤ 0.269, 0.303 ≤ (T12 + T23 + T34 + T45 + T56 + T67 + T78 + T89) / TL ≤ 0.642, 0.168 ≤ MAX(T12, T23, T34) / TL ≤ 0.448, 0.295 ≤ BFL / TTL ≤ 0.354, 0.008 ≤ |F6 / F7 / F8|*mm ≤ 0.068 or 0.016 ≤ |(Vd6 / F6 + Vd7 / F7 + Vd8 / F8) / (n6*CT6 + n7*CT7 + n8*CT8)| ≤ 0.172。

[0029] In one example of an optical lens architecture, the first side of the first lens is convex. Another example is a second lens with negative optical power, where both the first and second sides of the second lens are concave; or, the second lens has negative optical power, with both the first and second sides being planar and concave; or, the second lens has negative optical power, with both the first and second sides being convex and concave; or, the second lens has negative optical power, with both the first and second sides being concave and planar; or, the second lens has negative optical power, with both the first and second sides being concave and convex. One example is that the third lens has positive optical power, with both its first and second sides being convex; or, the third lens has positive optical power, with its first side being planar and its second side being convex; or, the third lens has positive optical power, with its first side being concave and its second side being convex; or, the third lens has positive optical power, with its first side being convex and its second side being concave; or, the third lens has positive optical power, with its first side being convex and its second side being planar. Another example is that the fourth lens has negative optical power, with both its first and second sides being concave; or, the fourth lens has negative optical power, with its first side being concave and its second side being planar; or, the fourth lens has negative optical power, with its first side being concave and its second side being convex; or, the fourth lens has negative optical power, with its first side being convex and its second side being concave. One example is that the fifth lens has positive optical power, and both its first and second sides are convex; or, the fifth lens has positive optical power, its first side is planar, and its second side is convex; or, the fifth lens has positive optical power, its first side is concave, and its second side is convex; or, the fifth lens has positive optical power, its first side is convex, and its second side is concave. Another example is that the sixth lens has positive optical power, and both its first and second sides are convex; or, the sixth lens has positive optical power, its first side is concave, and its second side is convex. Another example is that the seventh lens has negative optical power, and both its first and second sides are concave; or, the seventh lens has negative optical power, its first side is concave, and its second side is convex; or, the seventh lens has negative optical power, its first side is concave, and its second side is planar.One example is that the first side surface of the eighth lens is convex, and the second side surface of the eighth lens is convex; or, the first side surface of the eighth lens is concave, and the second side surface of the eighth lens is convex; or, the first side surface of the eighth lens is flat, and the second side surface of the eighth lens is convex. Another example is that the first side surface of the ninth lens is convex, and the second side surface of the ninth lens is convex; or, the first side surface of the ninth lens is flat, and the second side surface of the ninth lens is convex; or, the first side surface of the ninth lens is concave, and the second side surface of the ninth lens is convex.

[0030] In an optical architecture II system, one example is: an optical lens of architecture II satisfies at least one of the following: the first lens has a convex first side surface; the second lens has negative optical power, and the first and second sides of the second lens are concave; the third lens has positive optical power, and the first and second sides of the third lens are convex; the fourth lens has positive optical power, and the first and second sides of the fourth lens are concave; or, the fourth lens has positive optical power, and the first and second sides of the fourth lens are convex; the fifth lens has negative optical power, and the first and second sides of the fifth lens are concave; or, the fifth lens has negative optical power, and the first and second sides of the fifth lens are concave; or, the fifth lens has negative optical power, and the first and second sides of the fifth lens are concave; or, the fifth lens has negative optical power, and the first and second sides of the fifth lens are convex. The fifth lens has negative optical power, its first side surface is convex, and its second side surface is concave; the sixth lens has positive optical power, its first side surface is convex, and its second side surface is convex; the seventh lens has negative optical power, its first side surface is concave, and its second side surface is convex; or, the seventh lens has negative optical power, its first side surface is convex, and its second side surface is concave; or, the seventh lens has negative optical power, its first side surface is concave, and its second side surface is concave; the eighth lens has a concave first side surface and a convex second side surface; or, the eighth lens has a convex first side surface and a concave second side surface; the ninth lens has a convex first side surface and a convex second side surface.

[0031] An example is an optical lens architecture that satisfies at least one of the following relationships: 0.094 ≤ F / TTL ≤ 0.205, 1.435 ≤ BFL / F ≤ 3.18, 44.746° ≤ (FOV×F) / H ≤ 65.134°, 0.133° ≤ TTL / H / FOV ≤ 0.313°, 3.329 ≤ TTL / DMAX ≤ 6.188, 0.4 ≤ (F*θ) / D ≤ 0.8 02, 0.027°≤D / H / FOV≤0.049°, 0.063≤D / H / F*mm≤0.187, 0.829≤F / H≤1.904, 1.7≤F / ENPD≤2.99, 0.077≤F / ENPD / D≤0.183, 0.627≤DST / F≤1.332 or 0.818≤(H / 2) / (F*tan(θ / 2))≤1.173.

[0032] For example, an optical lens of architecture one satisfies at least one of the following relationships: -3.426 ≤ F1 / F ≤ -1.247 or 0.356 ≤ |F1 / F2| ≤ 3.052. An optical lens of architecture two satisfies at least one of the following relationships: -8.561 ≤ F1 / F ≤ -2.634 or 1.016 ≤ |F1 / F2| ≤ 12.962.

[0033] For example, an optical lens of architecture one satisfies at least one of the following relationships: 0.802 ≤ |F2 / F| ≤ 4.126 or 0.685 ≤ |F2 / F3| ≤ 1.817. An optical lens of architecture two satisfies at least one of the following relationships: 0.76 ≤ |F2 / F| ≤ 2.384 or 0.399 ≤ |F2 / F3| ≤ 1.095.

[0034] For example, an optical lens of architecture one satisfies at least one of the following relationships: 0.995 ≤ F3 / F ≤ 2.814 or 0.071 ≤ |F3 / F4| ≤ 2.047. An optical lens of architecture two satisfies at least one of the following relationships: 1.516 ≤ F3 / F ≤ 2.54 or 0.322 ≤ |F3 / F4| ≤ 1.21.

[0035] An example is an optical lens with an architecture that satisfies at least one of the following relationships: 1.087≤|F4 / F|≤23.408, 1.258≤|F5 / F|≤3.327, 2.804≤|F45 / F|≤1370.556, -0.831≤F1 / |F45|≤-0.001, 0.002≤F3 / |F45|≤0.587, 0.002≤F9 / |F45|≤0.805, 0.279≤|F4 / F9|≤10.14, 0.632≤|F4 / F5|≤8.09, 0.764≤|F5 / F6|≤1.58 or 19.992≤|(R7*R8) / F4|. The optical lens of architecture two satisfies at least one of the following relationships: 1.626≤|F4 / F|≤5.411, 0.944≤|F5 / F|≤3.739, 0.681≤|F4 / F5|≤3.297 or 0.422≤|F5 / F6|≤2.23.

[0036] An example is an optical lens architecture that satisfies at least one of the following relationships: 1.274≤|F6 / F|≤2.966, 0.639≤|F7 / F|≤1.857, 1.77≤F8 / F≤4.497, 3.407≤|F6~8 / F|≤242.883, 0.01≤F5 / |F6~8|≤0.493, 0.873≤|F6~8| / F9≤92.738, 0.543≤|F6~8| / TL≤39.92, 1.239≤|F6~8| / BFL≤92.006, 1.023≤|F6 / F7|≤2.49, 0.307≤|F7 / F8|≤0.608 or 0.101≤|F45 / F6~8|≤120.281. The optical lens of Architecture II satisfies at least one of the following relationships: 1.14≤|F6 / F|≤2.735, 0.939≤|F7 / F|≤5.042, 2.179≤F8 / F≤3.593, 0.434≤|F6 / F7|≤2.476 or 0.355≤|F7 / F8|≤1.613.

[0037] For example, an optical lens of architecture one satisfies at least one of the following relationships: 1.901≤F9 / F≤4.993, 0.595≤F8 / F9≤1.45, or 88.405≤|R17*R18 / F9|. An optical lens of architecture two satisfies at least one of the following relationships: 2.088≤F9 / F≤4.454, or 0.643≤F8 / F9≤1.239.

[0038] An example is an optical lens architecture that satisfies at least one of the following relationships: 0.002≤(T45+T56+T67+T78) / (T12+T23+T34+T45+T56+T67+T78+T89)≤0.06, 0.296≤(T12+T23+T34+T45+T56+T67+T78+T89) / TL≤0.738 or 0.155≤MAX(T12, T23, T34) / TL≤0.515. The optical lens of Architecture 2 satisfies at least one of the following relationships: 0.027≤(T45+T56+T67+T78) / (T12+T23+T34+T45+T56+T67+T78+T89)≤0.309, 0.258≤(T12+T23+T34+T45+T56+T67+T78+T89) / TL≤0.685 or 0.143≤MAX(T12, T23, T34) / TL≤0.461.

[0039] For example, the optical back focal length (BFL) of an optical lens and the total optical length (TTL) of the optical lens satisfy the following condition: 0.255 ≤ BFL / TTL ≤ 0.407.

[0040] For example, in an optical lens of architecture one, the focal lengths of the sixth lens (F6), the seventh lens (F7), and the eighth lens (F8) satisfy the following relationship: 0.018 ≤ |F6 / F7 / F8|*mm ≤ 0.077. In an optical lens of architecture two, the following relationship is satisfied: the focal lengths of the sixth lens (F6), the seventh lens (F7), and the eighth lens (F8) satisfy the following relationship: 0.012 ≤ |F6 / F7 / F8| ≤ 0.078.

[0041] One example is an optical lens with architecture 1 that satisfies: 0.05≤|(Vd6 / F6+Vd7 / F7+Vd8 / F8) / (n6*CT6+n7*CT7+n8*CT8)|≤0.198.

[0042] For example, the optical lens of Architecture 1 satisfies: 0.293≤(T12+T23+T34) / TL≤0.688. The optical lens of Architecture 2 satisfies: 0.244≤(T12+T23+T34) / TL≤0.649.

[0043] One example is an optical lens with architecture one satisfying the following conditions: the fourth lens and the fifth lens are cemented together to form a cemented lens, and the sixth, seventh, and eighth lenses are cemented together to form a cemented lens; or, the fourth lens and the fifth lens are cemented together to form a cemented lens, and the sixth lens and the seventh lens are cemented together to form a cemented lens. An optical lens with architecture two satisfying the following conditions: the fourth lens and the fifth lens are cemented together to form a cemented lens, and the sixth lens and the seventh lens are cemented together to form a cemented lens; or, the fourth lens and the fifth lens are cemented together to form a cemented lens, and the seventh lens and the eighth lens are cemented together to form a cemented lens; or, the sixth lens and the seventh lens are cemented together to form a cemented lens.

[0044] An example is an optical lens architecture that satisfies at least one of the following relationships:

[0045] 0.11≤F / TTL≤0.178、1.688≤BFL / F≤2.765、52.642°≤(FOV×F) / H≤56.638°、0 .156°≤TTL / H / FOV≤0.272°、3.917≤TTL / DMAX≤5.381、0.471≤(F*θ) / D≤0.697 、0.032°≤D / H / FOV≤0.043°、0.074≤D / H / F*mm≤0.163、0.975≤F / H≤1.656、2≤ F / ENPD≤2.6、0.091≤F / ENPD / D*mm≤0.159、0.738≤DST / F≤1.158、0.962≤(H / 2 ) / (F*tan(θ / 2)) ≤ 1.02, -2.979 ≤ F1 / F ≤ -1.467, ≤ 0.419 |F1 / F2| ≤ 2.654, ≤ 0.943 |F2 / F| ≤ 3.588, ≤ 0.806 |F2 / F3| ≤ 1.58, ≤ 1.17 |F3 / F ≤ 2.447, ≤ 0.083 |F3 / F4 |≤1.78、1.279≤|F4 / F|≤20.355、1.48≤|F5 / F|≤2.893、3.299≤|F45 / F|≤119 1.788、-0.723≤F1 / |F45|≤-0.001、0.002≤F3 / |F45|≤0.51、0.002≤F9 / |F45| ≤0.7、0.328≤|F4 / F9|≤8.817、0.744≤|F4 / F5|≤7.035、0.899≤|F5 / F6|≤1.3 74、23.52≤|(R7*R8) / F4|≤91466.662、1.499≤|F6 / F|≤2.579、0.752≤|F7 / F| ≤1.615、2.082≤F8 / F≤3.91、4.008≤|F6~8 / F|≤211.203、0.012≤F5 / |F6~8|≤ 0.429、1.027≤|F6~8| / F9≤80.642、0.639≤|F6~8| / TL≤34.713、1.458≤|F6~8 | / BFL≤80.005, 1.204≤|F6 / F7|≤2.165, 0.361≤|F7 / F8|≤0.529, 0.119≤|F45 / F6~8|≤104.592, 2.237≤F9 / F≤4.342, 0.7≤F8 / F9≤1.261, 104.006≤|R17*R 18 / F9|≤96646.771、0.002≤(T45+T56+T67+T78) / (T12+T23+T34+T45+T56+T 67+T78+T89)≤0.052、0.348≤(T12+T23+T34+T45+T56+T67+T78+T89) / TL≤0.642, 0.182≤MAX(T12, T23, T34) / TL≤0.448, 0.3≤BFL / TTL≤0.354, 0.021≤|F6 / F7 / F8|*mm≤0.067, 0.059≤|(Vd6 / F6+Vd7 / F7+Vd8 / F8) / (n6*CT6+n7*CT7+n8*CT8)|≤0.172 or 0.345≤(T12+T23+T34) / TL≤0.598.

[0046] The optical lens of architecture two satisfies at least one of the following relationships: 0.303≤(T12+T23+T34+T45+T56+T67+T78+T89) / TL≤0.596, -10.072≤F1 / F≤-2.29, 0.894≤|F2 / F|≤2.073, 1.784≤F3 / F≤2.209, 1.913≤|F4 / F|≤4.705, 1.11≤|F5 / F|≤3.251, 1.341≤|F6 / F|≤2.378, 1.105≤|F7 / F|≤4.384, 2. 564≤F8 / F≤3.124, 2.457≤F9 / F≤3.873, 0.287≤(T12+T23+T34) / TL≤0.564, 1.195≤| F1 / F2|≤11.271, 0.469≤|F2 / F3|≤0.952, 0.379≤|F3 / F4|≤1.052, 0.801≤|F4 / F5| ≤2.867, 0.496≤|F5 / F6|≤1.939, 0.51≤|F6 / F7|≤2.153, 0.418≤|F7 / F8|≤1.403, 0. 756≤F8 / F9≤1.077, 0.014≤|F6 / F7 / F8|≤0.068, 0.032≤(T45+T56+T67+T78) / (T12+T23+T34+T45+T56+T67+T78+T89)≤0.269 or 0.168≤MAX(T12, T23, T34) / TL≤0.401;

[0047] The optical lens according to the embodiments of this application employs nine lenses, each with optical power. The first lens has negative optical power, and its second side surface is concave. The second lens has optical power. The third lens has positive optical power. The fourth lens has optical power. The fifth lens has optical power. The sixth lens has optical power. The seventh lens has optical power. The eighth lens has positive optical power. The ninth lens has optical power.

[0048] This application controls the ratio of the sum of the air gaps between the first and second lenses, the second and third lenses, and the third and fourth lenses, to the length of the lens group of the optical lens, i.e., 0.244≤(T12+T23+T34) / TL≤0.703. This allows sufficient air gaps to distribute the optical power burden of the front group of negative and positive power lenses, reduce the incident angle of light, and effectively suppress small off-axis aberrations and chromatic aberration such as spherical aberration and coma, thereby improving the edge sharpness and color reproduction of the projected image. At the same time, the increased air gaps reduce stray light interference between lenses, adapting to the short-distance, high-image-quality requirements of in-vehicle projection and ensuring the imaging stability of the optical lens in the complex environment of an in-vehicle vehicle. Attached Figure Description

[0049] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0050] Figure 1-28 A schematic diagram of the structure of an optical lens according to embodiments 1-28 of this application is shown;

[0051] Figure 29 , 30 Figures 31 and 31 respectively show the modulation transfer function (MTF) curves of the optical lenses according to embodiments 5, 17, and 19 of this application. Detailed Implementation

[0052] To better understand this application, various aspects of this application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely descriptions of exemplary embodiments of this application and are not intended to limit the scope of this application in any way. Throughout the specification, the same reference numerals refer to the same elements. 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 indicate any limitation on the features. Therefore, the first lens discussed below may also be referred to as the second lens or the third lens without departing from the teachings of this application. In the drawings, for ease of illustration, the thickness, size, and shape of the lenses have been slightly exaggerated. Specifically, the shapes of spherical or aspherical surfaces shown in the drawings are illustrated by way of example. That is, the shapes of spherical or aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustrative purposes only and are not strictly drawn to scale.

[0053] In this document, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the location of the convexity is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the location of the concaveness is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the first side is called the first side surface of the lens, and the surface of each lens closest to the second side is called the second side surface of the lens. It should also be understood that the terms "comprising," "including," and / or "having," when used in this specification, indicate the presence of the stated features, elements, and / or components, but do not exclude the presence or addition of one or more other features, elements, components, and / or combinations thereof. Furthermore, when describing embodiments of this application, the term "may" is used to mean "one or more embodiments of this application." And the term "exemplary" is intended to refer to an example or illustration. Unless otherwise specified, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms (e.g., terms defined in common dictionaries) should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and will not be interpreted in an idealized or overly formal sense, unless expressly so defined herein. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0054] The features, principles and other aspects of this application are described in detail below.

[0055] An optical lens according to an exemplary embodiment of this application may include, for example, nine lenses with optical power, namely a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, and a ninth lens, which are arranged sequentially along the optical axis from the first side to the second side. In the example, the optical lens may be used as, for example, an imaging lens, in which case the first side of the optical lens may be the object side and the second side may be the image side. Light rays from the object side can be imaged on the image side. The second side of the optical lens is provided with the imaging surface of the optical lens. The imaging lens may be, for example, a vehicle-mounted lens, a security monitoring lens, a radar receiver lens, etc. In the example, the optical lens may be used as, for example, a projection lens or a lidar transmitter lens, in which case the second side of the optical lens may be the image source side and the first side may be the imaging side. Light rays from the image source side can be imaged on the imaging side. The second side of the optical lens is provided with the image source surface of the optical lens.

[0056] In the example, the optical lens provided in this application can serve as a light receiving lens or a light emitting lens. The light receiving lens is typically used to collect light from the object-side space, and the collected light is used to form detection information, including but not limited to imaging and laser point clouds. The light emitting lens is typically used to transmit light from the light emitting unit to the object-side space. According to the function of the light, the light transmitted to the object-side space can be divided into projection light for forming a projected image or detection light for detecting target information. It is understood that when the optical lens provided in this application is used as a light receiving lens such as a camera lens, a lidar receiver lens, a microscope lens, or a telescope lens, the term "first side" as used herein can refer to the object side, and "second side" can refer to the image side (such as the side where a photoelectric sensor or retina is located). That is, light from the object side can, for example, form an image on the image side. A camera lens can be, for example, a vehicle-mounted camera, an infrared camera, a drone camera, a night vision camera, or a security monitoring camera. When the optical lens provided in this application is used as a light emitting lens such as a projection lens or a lidar transmitter lens, the term "first side" as used herein can refer to the object side, and "second side" can refer to the light source side.

[0057] In some possible implementations, the optical lens provided in this application can also simultaneously perform both light receiving and light transmitting functions. For example, the optical lens provided in this application is used in a lidar system with shared light and light paths, where the optical lens simultaneously performs the functions of emitting laser light and receiving radar echo beams. As another example, the optical lens provided in this application is used in a system integrating optical communication and radar, where the optical lens simultaneously performs the functions of emitting modulated optical signals and receiving radar echo beams.

[0058] In the example, the first lens is a negative lens, with a convex first side and a concave second side. This allows for the correction of aberrations at the point of light incidence while reducing the size and weight of the lens, thus reducing the burden on the subsequent spherical lenses.

[0059] In the example, the first lens is a negative lens, with both its first and second sides being concave. This allows for the pre-divergence of incident light rays, increasing the incident field of view of the subsequent lens group and optimizing the light transmission path.

[0060] In the example, the second lens is a negative lens, with both its first and second sides being concave. This enhances control over light divergence, aids in correcting astigmatism and chromatic aberration in optical lenses, and reduces the aberration correction burden on the rear lens group. It can suppress chromatic aberration, alleviate astigmatism problems in wide fields of view, and improve the sharpness at the edges of the image.

[0061] In the example, the second lens is a negative lens, with its first side being a plane and its second side being a concave surface. This reduces internal stray light interference while maintaining negative optical power.

[0062] In the example, the second lens is a negative lens, with a convex first side and a concave second side. This design can balance aberration correction with improved structural compactness, suppress residual spherical aberration and coma in the front lens group, and enhance the resolving power of the optical lens.

[0063] In the example, the second lens is a negative lens, with a concave first side and a flat second side. This allows for stable negative optical power to maintain light divergence, reduces assembly difficulty, minimizes aberration interference, and improves the resolving power of the optical lens.

[0064] In the example, the second lens is a negative lens, with a concave first side and a convex second side. This design can absorb the residual phase aberration of the first lens. The concave-convex structure prevents excessive light concentration, suppresses distortion over a large field of view, and improves the resolving power of the optical lens.

[0065] In the example, the second lens is a positive lens, with a concave first side and a convex second side. This allows it to absorb the residual phase difference of the first lens, preventing excessive light concentration and suppressing distortion over a large field of view.

[0066] In this example, the third lens is a positive lens, which converges light rays. The first and second sides of the third lens are convex. This helps suppress spherical aberration and coma. Combined with the negative optical power of the third lens, it prevents excessive light bending, thus initially balancing aberrations. It also neutralizes the divergence effect of the front lens group, which is beneficial for miniaturizing optical lenses.

[0067] In the example, the third lens is a positive lens, which converges light rays. The first side of the third lens is flat, and the second side is convex. This reduces light reflection and residual aberrations, improves image clarity, and allows for more flexible optical path layouts.

[0068] In the example, the third lens is a positive lens that converges light rays. The first side of the third lens is concave, and the second side is convex. This allows for flexible suppression of chromatic aberration and field curvature while converging the light path, reducing the correction burden on the rear lenses. It also helps control the radial dimensions of the optical lens, facilitating miniaturization.

[0069] In the example, the third lens is a positive lens, which converges light rays. The first side of the third lens is convex, and the second side is flat. This can suppress the distortion and stray light remaining from the first two lens groups, while smoothly connecting the optical path with its weak converging characteristics. It meets the low stray light requirements of compact architectures, can control the lens size, reduce coaxiality errors during assembly, and is conducive to achieving miniaturization and improved stability of optical lenses.

[0070] In the example, the third lens is a positive lens, which converges light rays. The first side of the third lens is convex, and the second side is concave. This balances aberrations and light paths, effectively converging light while suppressing aberrations such as chromatic aberration and field curvature. It can improve the resolving power of the optical lens, cancel out residual aberrations of the front lens, and avoid superimposed aberrations from a purely positive power lens.

[0071] In this example, the fourth lens is a negative lens, which diverges light. Both the first and second sides of the fourth lens are concave. This double-concave structure allows for improved resolution of the optical lens through symmetrical divergence. It also reduces coaxiality errors during assembly, facilitating miniaturization and improved optical stability of the optical lens.

[0072] In this example, the fourth lens is a negative lens, which diverges light. The first side of the fourth lens is convex, and the second side is concave. This convex-concave structure corrects field curvature and astigmatism, enabling high resolution in the optical lens. The convex-concave structure also reduces the angle of light entering the rear lens group, which is beneficial for achieving high resolution in the rear lens group and improves the contrast of the projected image.

[0073] In the example, the fourth lens is a negative lens, which diverges light. The first side of the fourth lens is concave, and the second side is flat. It can effectively correct field curvature and astigmatism by producing a field curvature opposite to that of a positive lens to flatten the image plane, ensuring that the center and edges of the image are sharp at the same time. This helps to balance various aberrations and reduces the difficulty of correcting off-axis aberrations such as astigmatism and coma.

[0074] As a negative lens, it diverges light rays. The first side of the fourth lens is concave, and the second side is convex. The concave-convex structure of the negative lens allows for better control of the light ray angle, enabling the light to enter the rear lens group in a smoother manner. The concave surface facing the object side can moderately diverge light rays, reducing the height and angle of the principal ray, creating more favorable incident conditions for the rear positive lens group, thereby reducing the difficulty of correcting off-axis aberrations such as astigmatism and coma.

[0075] In this example, the fourth lens is a positive lens, which converges light rays. The first and second sides of the fourth lens are convex. The fourth lens has a biconvex structure; by appropriately designing the radius of curvature and shape factor, higher-order aberrations of the optical lens can be effectively balanced, improving image quality. The positive optical power of the biconvex structure effectively balances the diverging effect of the front negative lens.

[0076] In the example, the fourth lens is a positive lens, which converges light rays. The first side of the fourth lens is concave, and the second side is convex. The fourth lens serves as a transition adjustment in the optical path; the concave surface effectively collects the light rays emitted from the front lens group, while the convex surface allows the light rays to smoothly transition to the rear lens group. This helps optimize the beam path, reduce the aperture of the rear lens group, and enables the miniaturization of optical lenses.

[0077] In the example, the fifth lens is a positive lens, which converges light rays. Both the first and second sides of the fifth lens are convex. This helps improve the image quality at the edges of the field of view. It can improve the uniformity of edge illumination, reduce vignetting, and ensure the resolution and color reproduction capability of the edge field of view, thereby improving the integration and stability of the optical lens.

[0078] In the example, the fifth lens is a positive lens, which converges light rays. The first side of the fifth lens is flat, and the second side is convex. This allows for optical power separation, distributing the refraction task to both surfaces, effectively reducing aberrations, improving the integration and stability of the optical lens, and preventing any single surface from bearing an excessive burden of aberration correction.

[0079] In this example, the fifth lens is a positive lens, which converges light rays. The first side of the fifth lens is concave, and the second side is convex. By generating a field curvature opposite to that of a positive lens, it flattens the image plane, ensuring that the center and edges of the image are simultaneously sharp. The concave-convex structure allows for better control of the light angle, enabling light to enter the rear lens group in a smoother manner. The concave surface facing the object side creates more favorable incident conditions, thus reducing the difficulty of correcting off-axis aberrations such as astigmatism and coma.

[0080] In the example, the fifth lens is a positive lens, which converges light rays. The first side of the fifth lens is convex, and the second side is concave. This convex-concave structure allows for better control of the light angle, enabling the light to enter the rear lens group more smoothly. The concave surface facing the object side creates more favorable incident conditions for the rear positive lens group, thereby reducing the difficulty of correcting off-axis aberrations such as astigmatism and coma, and more effectively balancing aberrations. The convex-concave structure also makes the aberration distribution more uniform, preventing any single surface from bearing an excessive burden of aberration correction.

[0081] In the example, the fifth lens is a negative lens, which diverges light. The first and second sides of the fifth lens are concave. This allows it to continuously diverge the light emitted from the front lens group, enabling the rear positive lens group to receive light at a gentler angle, reducing the curvature requirements of its surface, lowering manufacturing complexity, and minimizing its own aberrations.

[0082] In the example, the fifth lens is a negative lens, which diverges light. The first side of the fifth lens is concave, and the second side is convex. This concave-convex structure allows for better control of the light angle, enabling the light to enter the rear lens group in a smoother manner.

[0083] In the example, the fifth lens is a negative lens, which diverges light rays. The first side of the fifth lens is convex, and the second side is concave. This allows light rays to enter the rear lens group in a smoother manner. The concave surface facing the object side can moderately diverge light rays, reducing the height and angle of the principal ray, creating more favorable incident conditions for the rear positive lens group, thereby reducing the difficulty of correcting off-axis aberrations such as astigmatism and coma.

[0084] In the example, the sixth lens is a positive lens, which converges light rays. The first and second sides of the sixth lens are convex. It can quickly converge light rays, focusing the beam over a shorter distance. It effectively balances the diverging effect of the front negative lens group, ensuring a positive overall optical power, while also creating favorable incident conditions for the rear lens group.

[0085] In the example, the sixth lens is a positive lens that converges light rays. The first side of the sixth lens is concave, and the second side is convex. This concave-convex shape helps balance various aberrations. The concave surface optimizes the beam path, reduces the aperture of the rear lens group, and helps improve the imaging quality of the peripheral field of view while achieving optical lens miniaturization.

[0086] In the example, the sixth lens is a negative lens, which diverges light. The first and second sides of the sixth lens are concave. This reduces the curvature requirements of its surface, lowers the manufacturing difficulty, and reduces its inherent aberrations.

[0087] In the example, the sixth lens is a negative lens, which diverges light. The first side of the sixth lens is concave, and the second side is convex. The concave surface effectively collects the light emitted from the front lens group, while the convex surface allows the light to smoothly transition to the rear lens group. This helps optimize the beam path, reduce the aperture of the rear lens group, and achieve lens miniaturization while improving the imaging quality of the edge field of view.

[0088] In the example, the seventh lens is a negative lens, which diverges light. The first and second sides of the seventh lens are concave. This plays a crucial role in aberration balancing. It balances the astigmatism produced by the front and rear positive lenses, improving off-axis image quality. The double-concave structure helps improve the lens's performance at different temperatures. The concave surfaces also help control internal reflections, reducing ghosting and stray light.

[0089] In the example, the seventh lens is a negative lens, which diverges light. The first side of the seventh lens is concave, and the second side is convex. It effectively corrects field curvature and astigmatism by producing a field curvature opposite to that of a positive lens to flatten the image plane, ensuring sharp imaging at both the center and edges of the image. It improves edge illumination uniformity, reduces vignetting, and ensures resolution and color reproduction at the edges of the field of view.

[0090] In the example, the seventh lens is a negative lens, which diverges light. The first side of the seventh lens is concave, and the second side is flat. The concave surface can dominate aberration correction. With the concave surface facing the object side, it can directly and efficiently correct the positive field curvature produced by the front group lenses (especially the fifth and sixth lenses), "flattening" the image plane and ensuring that the edges and center of the image are sharp at the same time.

[0091] In the example, the seventh lens is a negative lens, which diverges light. The first side of the seventh lens is convex, and the second side is concave. This allows for better control of the light angle, enabling the light to enter the rear lens group more smoothly. The convex surface facing the object side reduces the difficulty of correcting off-axis aberrations such as astigmatism and coma. The convex-concave structure improves the integration and stability of the optical lens.

[0092] In the example, the seventh lens is a positive lens, which converges light rays. The first and second sides of the seventh lens are convex. This helps balance higher-order aberrations in the optical lens, improving image quality. It also effectively balances the diverging effect of the front negative lens group.

[0093] In this example, the eighth lens is a positive lens, which converges light rays. The first and second sides of the eighth lens are convex. This biconvex structure is less sensitive to assembly errors and can compensate for the accumulated tolerances of the front lens group. The thermal compensation characteristics of the positive lens help improve the performance of the optical lens at different temperatures, while the convex surface helps control internal reflections, reducing ghosting and stray light.

[0094] In the example, the eighth lens is a positive lens, which converges light rays. The first side of the eighth lens is concave, and the second side is convex. The concave surface effectively corrects field curvature and astigmatism by producing a field curvature opposite to that of a positive lens, thus "flattening" the image plane and ensuring that the center and edges of the image are sharp simultaneously. It also allows for better control of the angle of light rays, enabling light to enter the rear lens group in a smoother manner.

[0095] In this example, the eighth lens is a positive lens that converges light rays. The first side of the eighth lens is flat, and the second side is convex. The convex surface facing the image creates more favorable incident conditions for the subsequent positive lens group, thereby reducing the need for off-axis aberration correction. The flat surface effectively collects light rays emitted from the front lens group. This improves edge illumination uniformity, ensuring resolution and color reproduction in the edge field of view.

[0096] In this example, the ninth lens is a positive lens that converges light. Both the first and second sides of the ninth lens are convex. This ensures that the image is clearly formed from the center to the edges simultaneously. The biconvex lens efficiently converges light onto the sensor, contributing to higher relative illumination (reducing edge glare) and improving edge brightness.

[0097] In the example, the ninth lens is a positive lens, which converges light rays. The first side of the ninth lens is flat, and the second side is convex. This allows for better control of the light ray angle, enabling the light to enter the rear lens group more smoothly. The convex surface facing the image creates more favorable incident conditions for the rear positive lens group, thereby reducing off-axis aberrations such as astigmatism and coma. The plano-convex structure helps improve the imaging quality of the edge field of view. By properly controlling the incident angle and path of edge rays, edge illumination uniformity can be improved, vignetting can be reduced, while ensuring the resolution and color reproduction capability of the edge field of view.

[0098] In the example, the ninth lens is a positive lens, which converges light rays. The first side of the ninth lens is concave, and the second side is convex. This concave-convex structure helps improve the imaging quality of the edge field of view. By properly controlling the incident angle and path of edge rays, the uniformity of edge illumination can be improved, vignetting can be reduced, and the resolution and color reproduction of the edge field of view can be ensured. It also allows for a more effective balance of optical lens aberrations. The concave-convex structure makes the aberration distribution more uniform, preventing individual surfaces from bearing an excessive burden of aberration correction.

[0099] In the example, the fourth and fifth lenses are cemented together to form a cemented lens, and the sixth, seventh, and eighth lenses are cemented together to form another cemented lens. Alternatively, the fourth and fifth lenses are cemented together, and the sixth and seventh lenses are cemented together to form yet another cemented lens. Cemented lenses can reduce the air gap between lenses, shorten the overall optical length, and make the overall structure of the optical lens more compact. Cemented lenses integrate lenses into a single component, reducing tolerance sensitivity issues such as overall eccentricity that occur during lens assembly. Cemented lenses can replace the air-glass interface between lenses with cemented interfaces, reducing light loss caused by inter-lens reflections and improving the overall light transmittance of the optical lens. By using a matching combination of high and low refractive index materials, it is possible to match larger aperture stops, thereby increasing the light transmission of the optical lens. Furthermore, cemented lenses can effectively correct various aberrations of the optical lens; by cementing positive and negative lenses, spherical aberration and chromatic aberration can be effectively eliminated, improving image quality.

[0100] In the example, the optical lens may also include an aperture stop, which may be positioned, for example, between the third and fourth lenses. By placing an aperture stop between the third and fourth lenses, it facilitates a smoother transition of light to the rear of the optical lens, reduces the aperture of the rear lens, and lowers the sensitivity of the optical lens during assembly. It should be understood that placing the aperture stop between the third and fourth lenses is merely exemplary, and this application does not impose specific limitations on it; the aperture stop may be placed in other positions as needed.

[0101] In the example, the first side of the first lens has at least one inflection point. This configuration allows edge rays to converge better to the image plane, effectively reducing aberrations such as coma and field curvature, increasing the angle between the upper and lower rays in the edge field of view, and improving relative illumination.

[0102] In the example, the first lens may include an aspherical surface, which can reasonably control the refraction of light in each field of view, effectively reduce various aberrations such as spherical aberration, coma, and distortion, and improve the performance of the optical lens.

[0103] In the example, the optical lens may also include a filter located between the ninth lens and the image plane to filter light of different wavelengths. The optical lens may also, as needed, have a protective glass between the filter and the image plane to prevent damage to internal components (e.g., chips) of the optical lens.

[0104] In the example, the optical lens may further include a photosensitive element disposed on the second side. Optionally, the photosensitive element disposed on the second side may be a charge-coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS).

[0105] The letters in this application have the following meanings: F is the total focal length of the optical lens, TTL is the total optical length of the optical lens, BFL is the optical back focal length of the optical lens, FOV is the maximum field of view of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, DMAX is the maximum value of the maximum aperture of all lenses in the optical lens, θ is the radian value of the maximum field of view of the optical lens, D is the maximum aperture of the first side of the first lens corresponding to the maximum field of view of the optical lens, ENPD is the entrance pupil diameter of the optical lens, and DS... T represents the effective aperture of the optical lens stop; F1 is the focal length of the first lens; F2 is the focal length of the second lens; F3 is the focal length of the third lens; F4 is the focal length of the fourth lens; F5 is the focal length of the fifth lens; F45 is the combined focal length of the fourth and fifth lenses; F9 is the focal length of the ninth lens; F6 is the focal length of the sixth lens; R7 is the central radius of curvature of the first side of the fourth lens; R8 is the central radius of curvature of the second side of the fourth lens; F7 is the focal length of the seventh lens; F8 is the focal length of the eighth lens; F6-8 are the combined focal lengths of the sixth to eighth lenses; R17 is the central radius of curvature of the first side of the ninth lens; R18 is the central radius of curvature of the second side of the ninth lens; T45 is the focal length of the fourth and fifth lenses combined. The air gaps between lenses are as follows: T56 is the air gap between the fifth and sixth lenses; T67 is the air gap between the sixth and seventh lenses; T78 is the air gap between the seventh and eighth lenses; T89 is the air gap between the eighth and ninth lenses; Vd6 is the Abbe number of the sixth lens; Vd7 is the Abbe number of the seventh lens; Vd8 is the Abbe number of the eighth lens; n6 is the refractive index of the sixth lens; CT6 is the center thickness of the sixth lens; n7 is the refractive index of the seventh lens; CT7 is the center thickness of the seventh lens; n8 is the refractive index of the eighth lens; CT8 is the center thickness of the eighth lens; MAX(T12, T23, T34) / TL is the maximum value among T12 / TL, T23 / TL, and T34 / TL.

[0106] In the example, the optical lens satisfies: 0.244≤(T12+T23+T34) / TL≤0.703. Preferably, 0.287≤(T12+T23+T34) / TL≤0.611. The optical lens of Architecture 1 satisfies: 0.293≤(T12+T23+T34) / TL≤0.688, preferably, 0.345≤(T12+T23+T34) / TL≤0.598. The optical lens of Architecture 2 satisfies: 0.258≤(T12+T23+T34+T45+T56+T67+T78+T89) / TL≤0.685, preferably, 0.303≤(T12+T23+T34+T45+T56+T67+T78+T89) / TL≤0.596.

[0107] In the example, the optical lens satisfies: 0.094 ≤ F / TTL ≤ 0.205, preferably 0.11 ≤ F / TTL ≤ 0.178. By controlling this relationship, aberrations in the edge field of view can be corrected, improving edge field of view resolution while maintaining a small volume.

[0108] In the example, the optical lens satisfies: 1.435≤BFL / F≤3.18, preferably 1.688≤BFL / F≤2.765.

[0109] By controlling this relationship, the back focal ratio can be controlled, as can the spatial size of the ninth lens to the image plane, which is beneficial for achieving a small CRA while ensuring high resolution.

[0110] In the example, the optical lens satisfies: 44.746°≤(FOV×F) / H≤65.134°, preferably 52.642°≤(FOV×F) / H≤56.638°. By controlling this relationship, the goals of low distortion, long back focal length, and high resolution can be achieved, while reducing the complexity of the optical lens and improving its stability.

[0111] In the example, the optical lens satisfies: 0.133° ≤ TTL / H / FOV ≤ 0.313°, preferably 0.156° ≤ TTL / H / FOV ≤ 0.272°. By controlling this relationship, distortion, astigmatism, field curvature, and transverse chromatic aberration introduced by a large field of view can be corrected within the total length of the segment. Furthermore, distortion and transverse chromatic aberration can be reduced while maintaining a compact structure and small volume.

[0112] In the example, the optical lens satisfies: 3.329≤TTL / DMAX≤6.188, preferably 3.917≤TTL / DMAX≤5.381. By controlling this relationship, the overall shape of the optical lens can be controlled. At the same time, by rationally designing the lens aperture, the edge field of view resolution can be improved while ensuring a small volume.

[0113] In the example, the optical lens satisfies: 0.382 ≤ (F*θ) / D ≤ 0.802, preferably 0.449 ≤ (F*θ) / D ≤ 0.697. The optical lens in architecture one satisfies: 0.4 ≤ (F*θ) / D ≤ 0.802, preferably 0.471 ≤ (F*θ) / D ≤ 0.697. By controlling this relationship, the front diameter of the lens can be reduced while maintaining the projected image size, thus reducing the size of the optical lens.

[0114] In the example, the optical lens satisfies: 0.027°≤D / H / FOV≤0.049°, preferably 0.032°≤D / H / FOV≤0.043°. By controlling this relationship, relative illumination can be balanced with small aperture and small volume. Simultaneously, the luminous flux at the edge field of view can be increased, reducing vignetting in the projected image.

[0115] In the example, the optical lens satisfies: 0.063≤D / H / F*mm≤0.202, preferably 0.074≤D / H / F*mm≤0.176. The first lens has a negative optical power. By controlling this relationship, distortion and aberrations introduced by a large field of view can be corrected. In order to maintain edge brightness, a large front aperture is required, and high resolution and high light throughput are needed while ensuring a small volume, which is beneficial to the miniaturization of the optical lens.

[0116] In the example, the optical lens satisfies: 0.829 ≤ F / H ≤ 1.904, preferably 0.975 ≤ F / H ≤ 1.656. By controlling this relationship, high resolution of the optical lens can be achieved while maintaining a large angular resolution.

[0117] In the example, the optical lens satisfies: 1.7 ≤ F / ENPD ≤ 2.99, preferably 2 ≤ F / ENPD ≤ 2.6. By controlling this relationship, a small aperture can be ensured while maintaining high light transmission, thus achieving miniaturization of the optical lens.

[0118] In the example, the optical lens satisfies: 0.077≤F / ENPD / D*mm≤0.183, preferably 0.091≤F / ENPD / D*mm≤0.159. By controlling this relationship, a small aperture can be guaranteed while maintaining high light transmission, thus achieving miniaturization of the optical lens.

[0119] In the example, the optical lens satisfies: 0.627≤DST / F≤1.332, preferably 0.738≤DST / F≤1.158. By controlling this relationship, the light transmission of the optical lens can be increased while ensuring a large depth of field, thus reducing vignetting in the projected image.

[0120] In the example, the optical lens satisfies: 0.818≤(H / 2) / (F*tan(θ / 2))≤1.173, preferably, 0.962≤(H / 2) / (F*tan(θ / 2))≤1.02. By controlling this relationship, small distortion can be achieved while ensuring the focal length and projection image size.

[0121] In the example, the optical lens satisfies: -11.583≤F1 / F≤-1.247, preferably -10.072≤F1 / F≤-1.467. Alternatively, the optical lens of architecture one satisfies: -3.426≤F1 / F≤-1.247, preferably -2.979≤F1 / F≤-1.467. Alternatively, the optical lens of architecture two satisfies: -8.561≤F1 / F≤-2.634, preferably -10.072≤F1 / F≤-2.29. By controlling this relationship, the first lens can establish the basic focal length of the entire optical lens, control the initial light path, which is beneficial for controlling aberrations, and can make the structure more compact while maintaining the sharpness of the center of the image.

[0122] In the example, the optical lens satisfies: 0.054 ≤ |F1 / F2| ≤ 12.962, preferably 0.063 ≤ |F1 / F2| ≤ 11.271. Alternatively, the optical lens of architecture one satisfies: 0.356 ≤ |F1 / F2| ≤ 3.052, preferably 0.419 ≤ |F1 / F2| ≤ 2.654. ​​Alternatively, the optical lens of architecture two satisfies: 1.016 ≤ |F1 / F2| ≤ 12.962, preferably 1.195 ≤ |F1 / F2| ≤ 11.271. By controlling this relationship, excessive negative focal length of a single lens can be avoided, allowing light to be deflected more gently and controllably upon entry, laying a good foundation for aberration correction of the subsequent lens group.

[0123] In the example, the optical lens satisfies: 0.76 ≤ |F² / F| ≤ 32.015, preferably 0.894 ≤ |F² / F| ≤ 27.839. Alternatively, the optical lens of architecture one satisfies: 0.802 ≤ |F² / F| ≤ 4.126, preferably 0.943 ≤ |F² / F| ≤ 3.588. Alternatively, the optical lens of architecture two satisfies: 0.76 ≤ |F² / F| ≤ 2.384, preferably 0.894 ≤ |F² / F| ≤ 2.073. By controlling this relationship, the second lens enhances the light-gathering ability of the beam received from the first lens, further solidifying the lens focal length. The F-axis allows for a smoother transition of light while maintaining light transmission capacity, reducing the aberration correction pressure on the rear lens group and improving the resolving power of the optical lens.

[0124] In the example, the optical lens satisfies: 0.399≤|F2 / F3|≤3.908, preferably 0.469≤|F2 / F3|≤3.398. Alternatively, the optical lens of architecture one satisfies: 0.685≤|F2 / F3|≤1.817, preferably 0.806≤|F2 / F3|≤1.58. Alternatively, the optical lens of architecture two satisfies: 0.399≤|F2 / F3|≤1.095, preferably 0.469≤|F2 / F3|≤0.952. By controlling this relationship, the deflection and collection capabilities of the front group light can be balanced, effectively suppressing distortion and field curvature introduced by the large field of view. This lays a good foundation for precise aberration correction (especially chromatic aberration) of the rear lens group, ensuring the geometric fidelity and detail clarity of the entire projected image, especially in the edge areas.

[0125] In the example, the optical lens satisfies: 0.995≤F3 / F≤9.422, preferably 1.17≤F3 / F≤8.193. Alternatively, the optical lens in architecture two satisfies: 1.516≤F3 / F≤2.54, preferably 1.784≤F3 / F≤2.209. By controlling this relationship, the aberration correction strength between the edge and center fields of view can be balanced, the refraction degree of different colored lights can be reduced, chromatic aberration can be reduced, and projection color fringing can be suppressed.

[0126] In the example, the optical lens satisfies: 0.071≤|F3 / F4|≤4.001, preferably 0.083≤|F3 / F4|≤3.479, or the optical lens of architecture one satisfies: 0.071≤|F3 / F4|≤2.047, preferably 0.083≤|F3 / F4|≤1.78. Alternatively, the optical lens of architecture two satisfies: 0.322≤|F3 / F4|≤1.21, preferably 0.379≤|F3 / F4|≤1.052. By controlling this relationship, the refraction and divergence of light by the third and fourth lenses (one positive and one negative) can be balanced, effectively compensating for astigmatism and field curvature introduced by the large front field of view, and avoiding excessive aberration burden transferred to the rear lens group. This lays a crucial foundation for achieving a clear projected image with low distortion and high edge resolution for the entire optical lens.

[0127] In the example, the optical lens satisfies: 1.087 ≤ |F4 / F| ≤ 23.408, preferably 1.279 ≤ |F4 / F| ≤ 20.355. Alternatively, the optical lens of the second architecture satisfies: 1.626 ≤ |F4 / F| ≤ 5.411, preferably 1.913 ≤ |F4 / F| ≤ 4.705. By controlling this relationship, the correction of field curvature can be enhanced, while the distortion of the front lens group can be counteracted.

[0128] In the example, the optical lens satisfies: 0.944 ≤ |F5 / F| ≤ 10.681, preferably 1.11 ≤ |F5 / F| ≤ 9.288. Alternatively, the optical lens of architecture one satisfies: 1.258 ≤ |F5 / F| ≤ 3.327, preferably 1.48 ≤ |F5 / F| ≤ 2.893. Alternatively, the optical lens of architecture two satisfies: 0.944 ≤ |F5 / F| ≤ 3.739, preferably 1.11 ≤ |F5 / F| ≤ 3.251. By controlling this relationship, spherical aberration and chromatic aberration can be effectively suppressed, while also reducing optical lens distortion.

[0129] In the example, the optical lens of architecture one satisfies: 2.804 ≤ |F45 / F| ≤ 1370.556, preferably 3.299 ≤ ​​|F45 / F| ≤ 1191.788. By controlling this relationship, the focal length of the cemented lens can be controlled within a reasonable range, which can suppress some chromatic aberration within the optical lens; and by controlling the curvature of the cemented surface, the projection chromatic aberration can be reduced by reasonably allocating the optical power.

[0130] In the example, the optical lens architecture satisfies: -0.831 ≤ F1 / |F45| ≤ -z0.001, preferably -0.723 ≤ F1 / |F45| ≤ -0.001. Since the first lens introduces spherical aberration and chromatic aberration, controlling this relationship allows control over the ratio of the focal lengths of the first lens to the combined focal lengths of the fourth and fifth lenses. This reduces chromatic aberration while balancing the residual spherical aberration of the first lens, reducing the spherical aberration correction pressure on the subsequent lenses and improving the resolving power of the optical lens.

[0131] In the example, the optical lens in the first architecture satisfies: 0.002≤F3 / |F45|≤0.587, preferably 0.002≤F3 / |F45|≤0.51. The third lens will absorb the residual spherical aberration of the first and second lenses, and will introduce spherical aberration and chromatic aberration. By controlling this relationship, the ratio of the focal length of the third lens to the combined focal length of the fourth and fifth lenses can be controlled. This can reduce chromatic aberration while balancing residual spherical aberration, reducing the spherical aberration correction pressure of the rear group, and improving the resolving power of the optical lens.

[0132] In the example, the optical lens in architecture one satisfies: 0.002≤F9 / |F45|≤0.805, preferably, 0.002≤F9 / |F45|≤0.7. By controlling this relationship, the power distribution between the rear positive lens (ninth lens) and the middle front cemented lens (fourth and fifth lenses, a negative-positive combination) can be balanced, effectively controlling optical lens aberrations. By controlling this relationship, field curvature and astigmatism can be suppressed, improving the edge sharpness and overall flatness of the projected image, while ensuring a reasonable back focal length, making the optical lens structure compact and adaptable to the limited installation space inside a vehicle.

[0133] In the example, the optical lens satisfies: 0.279 ≤ |F4 / F9| ≤ 10.14, preferably 0.328 ≤ |F4 / F9| ≤ 8.817. By controlling this relationship, a longer back focal length can be achieved while ensuring a compact overall length of the optical lens, leaving sufficient space for the arrangement of components such as reflectors in the in-cabin projection optical path and avoiding stray light interference. The long back focal length, combined with good aberration correction (such as field curvature), ensures high resolution and sharpness of the projected image from the center to the edge.

[0134] In the example, the optical lens of architecture one satisfies: 0.632≤|F4 / F5|≤8.09, preferably 0.744≤|F4 / F5|≤7.035. Alternatively, the optical lens of architecture two satisfies: 0.681≤|F4 / F5|≤3.297, preferably 0.801≤|F4 / F5|≤2.867. By controlling this relationship, the optical power of the fourth lens and the fifth lens can be effectively complementary, specifically correcting axial chromatic aberration and some spherical aberration generated by the front lens group, and preventing excessive transmission of aberrations to the rear lens group.

[0135] In the example, the optical lens satisfies: 0.396 ≤ |F5 / F6| ≤ 4.03, preferably 0.466 ≤ |F5 / F6| ≤ 3.504. Alternatively, the optical lens of architecture one satisfies: 0.764 ≤ |F5 / F6| ≤ 1.58, preferably 0.899 ≤ |F5 / F6| ≤ 1.374. Alternatively, the optical lens of architecture two satisfies: 0.422 ≤ |F5 / F6| ≤ 2.23, preferably 0.496 ≤ |F5 / F6| ≤ 1.939. By controlling this relationship, the optical power contribution of the two adjacent lenses in the middle of the optical lens can be balanced. This avoids the introduction of significant spherical aberration due to excessive optical power from a single positive lens, ensuring a smooth transition of light from the first group (fourth to fifth lenses) to the second group (sixth to eighth lenses), which is beneficial for uniform and coordinated correction of aberrations (especially spherical aberration and astigmatism) between the front and rear cemented groups.

[0136] In the example, the optical lens satisfies: 1.137 ≤ |(R7*R8) / F4|, preferably 1.338 ≤ |(R7*R8) / F4| ≤ 91466.662. Alternatively, the optical lens in the first architecture satisfies: 19.992 ≤ |(R7*R8) / F4|, preferably 23.52 ≤ |(R7*R8) / F4| ≤ 91466.662. By controlling this relationship, the surface power of the fourth lens can be reasonably allocated, which is beneficial for smooth light transition, ensuring resolution under small CRA, and is beneficial for the long back focal length design of the optical lens.

[0137] In the example, the optical lens satisfies: 0.841 ≤ |F6 / F| ≤ 3.23, preferably 0.989 ≤ |F6 / F| ≤ 2.809. Alternatively, the optical lens of architecture one satisfies: 1.274 ≤ |F6 / F| ≤ 2.966, preferably 1.499 ≤ |F6 / F| ≤ 2.579. Alternatively, the optical lens of architecture two satisfies: 1.14 ≤ |F6 / F| ≤ 2.735, preferably 1.341 ≤ |F6 / F| ≤ 2.378. By controlling this relationship, the aberrations of the front lens group can be further suppressed, the optical power of the fifth lens can be inherited, the distortion introduced by the negative optical power lens of the front group can be further offset, and chromatic aberration can be balanced.

[0138] In the example, the optical lens satisfies: 0.639 ≤ |F7 / F| ≤ 8.233, preferably 0.752 ≤ |F7 / F| ≤ 7.159. Alternatively, the optical lens of the second architecture satisfies: 0.939 ≤ |F7 / F| ≤ 5.042, preferably 1.105 ≤ |F7 / F| ≤ 4.384. By controlling this relationship, the aberration correction strength of the central and peripheral fields of view can be balanced, and the negative optical power can balance the aberration introduced by the sixth lens, thus reducing chromatic aberration while reducing distortion.

[0139] In the example, the optical lens satisfies: 1.77 ≤ F8 / F ≤ 4.497, preferably 2.082 ≤ F8 / F ≤ 3.91. Alternatively, the second-architecture optical lens satisfies: 2.179 ≤ F8 / F ≤ 3.593, preferably 2.564 ≤ F8 / F ≤ 3.124. The eighth lens can balance the aberrations of the front group and reduce chromatic aberration and distortion, thus reducing the aberration correction burden on the ninth lens.

[0140] In the example, the optical lens in the first architecture satisfies: 3.407 ≤ |F6~8 / F| ≤ 242.883, preferably 4.008 ≤ |F6~8 / F| ≤ 211.203. By controlling this relationship, the focal length of the cemented lens can be controlled within a reasonable range, thus suppressing some chromatic aberration within the optical lens. Furthermore, by controlling the curvature of the cemented surface, the optical power can be rationally allocated, reducing projected chromatic fringing. Controlling the combined focal length of the three cemented lenses within a certain range further suppresses secondary spectral density while suppressing chromatic aberration.

[0141] In the example, the optical lens in the first architecture satisfies: 0.01≤F5 / |F6~8|≤0.493, preferably 0.012≤F5 / |F6~8|≤0.429. The fifth lens inherits the residual spherical aberration from the first to the fourth lens and introduces spherical aberration and chromatic aberration. By controlling this relationship, chromatic aberration can be reduced while balancing residual spherical aberration, reducing the spherical aberration correction pressure on the rear lens group and improving the resolving power of the optical lens. Simultaneously, based on the front cemented lens group, chromatic aberration can be further reduced.

[0142] In the example, the optical lens of the first architecture satisfies: 0.873≤|F6~8| / F9≤92.738, preferably 1.027≤|F6~8| / F9≤80.642. By controlling this relationship, the power ratio between the rear cemented lens group (sixth to eighth lenses) and the final lens (ninth lens) can be constrained, providing a key guarantee for achieving a long back focal length and high resolution. By controlling this relationship, it is shown that the cemented group can flexibly undertake the correction function of major aberrations (such as chromatic aberration and spherical aberration), while the ninth lens can focus on providing a moderate positive power, thereby shifting the image plane back smoothly to obtain a longer back focal length, ensuring installation space and improving resolution.

[0143] In the example, the optical lens of the first architecture satisfies: 0.543≤|F6~8| / TL≤39.92, preferably 0.639≤|F6~8| / TL≤34.713. By controlling this relationship, the three cemented lenses can act as the main chromatic aberration balancing elements, with a smaller contribution to optical power, thus ensuring a compact structure while maintaining low chromatic aberration.

[0144] In the example, the optical lens of the first architecture satisfies: 1.239≤|F6~8| / BFL≤92.006, preferably 1.458≤|F6~8| / BFL≤80.005. By controlling this relationship, the three cemented lenses can act as the main chromatic aberration balancing elements, with a smaller contribution to optical power, thus ensuring a compact structure while maintaining low chromatic aberration.

[0145] In the example, the optical lens satisfies: 0.187≤|F6 / F7|≤2.49, preferably 0.22≤|F6 / F7|≤2.165. Alternatively, the optical lens of architecture one satisfies: 1.023≤|F6 / F7|≤2.49, preferably 1.204≤|F6 / F7|≤2.165. Alternatively, the optical lens of architecture two satisfies: 0.434≤|F6 / F7|≤2.476, preferably 0.51≤|F6 / F7|≤2.153. By controlling this relationship, the optical power within this lens group can be optimally balanced, effectively compensating for axial chromatic aberration and spherical aberration transmitted from the front lens group, and effectively suppressing field curvature, thus significantly eliminating color blur and edge aberration in the projected image.

[0146] In the example, the optical lens satisfies: 0.307 ≤ |F7 / F8| ≤ 3.717, preferably 0.361 ≤ |F7 / F8| ≤ 3.232. Alternatively, the optical lens of architecture one satisfies: 0.307 ≤ |F7 / F8| ≤ 0.608, preferably 0.361 ≤ |F7 / F8| ≤ 0.529. Alternatively, the optical lens of architecture two satisfies: 0.355 ≤ |F7 / F8| ≤ 1.613, preferably 0.418 ≤ |F7 / F8| ≤ 1.403. By controlling this relationship, it can be ensured that the seventh and eighth lenses work together to efficiently compensate for residual axial chromatic aberration and significantly suppress magnification chromatic aberration.

[0147] In the example, the optical lens of the first architecture satisfies: 0.101≤|F45 / F6~8|≤120.281, preferably 0.119≤|F45 / F6~8|≤104.592. By controlling this relationship, the back focal length can be directly optimized. By controlling this ratio within a small range, the ninth lens needs to have a strong positive optical power, which can effectively push the image plane back, thereby obtaining a longer back focal length. This provides sufficient layout space for the reflectors in the cabin optical path, avoiding mechanical interference and stray light. At the same time, by controlling this relationship, it can be ensured that aberrations (especially field curvature and astigmatism) are well balanced, so that the projected image presents high resolution and sharpness from the center to the edge.

[0148] In the example, the optical lens satisfies: 1.901≤F9 / F≤4.993, preferably 2.237≤F9 / F≤4.342. Alternatively, the optical lens of the second architecture satisfies: 2.088≤F9 / F≤4.454, preferably 2.457≤F9 / F≤3.873. By controlling this relationship, the focal length of the ninth lens can be reasonably set. The ninth lens has positive optical power, which can achieve light convergence and is beneficial for achieving a small CRA (Current Radiation Amplitude).

[0149] In the example, the optical lens satisfies: 0.498≤F8 / F9≤1.45, preferably 0.586≤F8 / F9≤1.261. Alternatively, the optical lens satisfies: 0.595≤F8 / F9≤1.45, preferably 0.7≤F8 / F9≤1.261. Or, the second optical lens satisfies: 0.643≤F8 / F9≤1.239, preferably 0.756≤F8 / F9≤1.077. By controlling this relationship, it can be ensured that the last lens (the ninth lens) has sufficient capacity to extend the long back focal length, and its optical power matches that of the front group lens (the eighth lens), effectively suppressing residual spherical aberration and field curvature, and avoiding image quality degradation caused by excessive or abrupt changes in the back focal length. This provides the ultimate guarantee for achieving high resolution and sharpness across the entire image in a compact structure.

[0150] In the example, the optical lens satisfies: 27.333≤|R17*R18 / F9|, preferably, 32.156≤|R17*R18 / F9|≤96646.771. Alternatively, the optical lens of the first architecture satisfies: 88.405≤|R17*R18 / F9|, preferably, 104.006≤|R17*R18 / F9|≤96646.771. By controlling this relationship, the back focal distance of the lens can be extended by optimizing the matching relationship between the curvature radius and focal length of the ninth lens, thus reserving sufficient space for in-cabin installation. Simultaneously, it can enhance edge ray correction capabilities, improve lens resolution, reduce distortion and detail loss in vehicle projection, and ensure high-definition imaging effects under complex conditions.

[0151] In the example, the optical lens satisfies: 0.002≤(T45+T56+T67+T78) / (T12+T23+T34+T45+T56+T67+T78+T89)≤0.309, preferably, 0.002≤(T45+T56+T67+T78) / (T12+T23+T34+T45+T56+T67+T78+T89)≤0.269. Alternatively, an optical lens architecture can satisfy: 0.002≤(T45+T56+T67+T78) / (T12+T23+T34+T45+T56+T67+T78+T89)≤0.06, preferably, 0.002≤(T45+T56+T67+T78) / (T12+T23+T34+T45+T56+T67+T78+T89)≤0.052. Alternatively, the optical lens of the second architecture can satisfy: 0.027≤(T45+T56+T67+T78) / (T12+T23+T34+T45+T56+T67+T78+T89)≤0.309, preferably, 0.032≤(T45+T56+T67+T78) / (T12+T23+T34+T45+T56+T67+T78+T89)≤0.269. By controlling this relationship, the total air gap between the fourth to eighth lenses can be controlled within a very small proportion of the total gap, thereby achieving small chromatic aberration. This highly compact structure forces light of different wavelengths to undergo multiple and rapid refractions within the dense lens group, allowing the material dispersion characteristics of each lens to be efficiently superimposed and mutually compensated within a short optical path, thus significantly suppressing magnification chromatic aberration (lateral chromatic aberration) and effectively eliminating color fringing at the image edges. At the same time, ample back focal length space is provided for the ninth lens, which facilitates the final fine-tuning of residual axial chromatic aberration, ensuring pure colors and clear white details throughout the image.

[0152] In the example, the optical lens satisfies: 0.258≤(T12+T23+T34+T45+T56+T67+T78+T89) / TL≤0.738, preferably, 0.303≤(T12+T23+T34+T45+T56+T67+T78+T89) / TL≤0.642. Alternatively, the optical lens of the architecture satisfies: 0.296≤(T12+T23+T34+T45+T56+T67+T78+T89) / TL≤0.738, preferably, 0.348≤(T12+T23+T34+T45+T56+T67+T78+T89) / TL≤0.642. Alternatively, the optical lens of the second architecture can satisfy: 0.244≤(T12+T23+T34) / TL≤0.649, preferably 0.287≤(T12+T23+T34) / TL≤0.564. By controlling this relationship, the spacing distribution of the nine positive and negative power lenses can be optimized, balancing optical performance in a compact cabin space. By controlling this relationship, distortion can be suppressed and image sharpness improved, while the lens group length can be controlled, enhancing shock resistance and temperature and humidity adaptability, making it suitable for vehicle installation and harsh working conditions.

[0153] In the example, the optical lens satisfies: 0.143≤MAX(T12, T23, T34) / TL≤0.515, preferably 0.168≤MAX(T12, T23, T34) / TL≤0.448. Alternatively, the optical lens of architecture one satisfies: 0.155≤MAX(T12, T23, T34) / TL≤0.515, preferably 0.182≤MAX(T12, T23, T34) / TL≤0.448. Alternatively, the optical lens of architecture two satisfies: 0.143≤MAX(T12, T23, T34) / TL≤0.461, preferably 0.168≤MAX(T12, T23, T34) / TL≤0.401. By controlling this relationship, the optical power load of the front lens group can be effectively distributed, the incident angle of light can be optimized, and the correction accuracy of off-axis aberrations such as spherical aberration and chromatic aberration can be improved. At the same time, a large air gap can reduce optical crosstalk between lenses, reduce stray light interference, and improve imaging uniformity and clarity.

[0154] In the example, the optical lens satisfies: 0.28 ≤ BFL / TTL ≤ 0.407, preferably 0.295 ≤ BFL / TTL ≤ 0.354. Alternatively, the optical lens in the architecture satisfies: 0.255 ≤ BFL / TTL ≤ 0.407, preferably 0.3 ≤ BFL / TTL ≤ 0.354. By controlling this relationship, the back focal length can be lengthened to achieve a telecentric image design, which is beneficial for achieving a small CRA (Cost Reduction Aspect Ratio), improving light incidence efficiency, and the longer back focal length space can reserve space for optical element installation and focusing.

[0155] In the example, the optical lens satisfies: 0.007≤|F6 / F7 / F8|*mm≤0.078, preferably 0.008≤|F6 / F7 / F8|*mm≤0.068. Alternatively, the optical lens of architecture one satisfies: 0.018≤|F6 / F7 / F8|*mm≤0.077, preferably 0.021≤|F6 / F7 / F8|*mm≤0.067. Alternatively, the optical lens of architecture two satisfies: 0.012≤|F6 / F7 / F8|≤0.078, preferably 0.014≤|F6 / F7 / F8|≤0.068. By controlling this relationship, the difference in dispersion characteristics of positive and negative power lenses for different wavelengths of light can be utilized to mutually cancel out second-order spectral and magnification chromatic aberration. By controlling this relationship, the equivalent Abbe number of this combination can be optimized, so that while compensating for the residual chromatic aberration of the front lens, it avoids introducing excessive field curvature and distortion. It can significantly improve the color consistency of the entire field of view, eliminate edge dispersion, and ensure that the projected image has excellent color reproduction and clarity.

[0156] In the example, the optical lens satisfies: 0.014≤|(Vd6 / F6+Vd7 / F7+Vd8 / F8) / (n6*CT6+n7*CT7+n8*CT8)|≤0.198, preferably, 0.016≤|(Vd6 / F6+Vd7 / F7+Vd8 / F8) / (n6*CT6+n7*CT7+n8*CT8)|≤0.172. Alternatively, the optical lens of the architecture satisfies: 0.05≤|(Vd6 / F6+Vd7 / F7+Vd8 / F8) / (n6*CT6+n7*CT7+n8*CT8)|≤0.198, preferably, 0.059≤|(Vd6 / F6+Vd7 / F7+Vd8 / F8) / (n6*CT6+n7*CT7+n8*CT8)|≤0.172. By controlling this relationship, chromatic aberration can be eliminated at the first and second wavelengths using different material combinations, and secondary spectral aberration can be eliminated at the third wavelength, thus achieving chromatic aberration-free imaging over a wider wavelength range than ordinary achromatic imaging. Dividing by the optical path length converts the absolute optical path length to a relative optical path length. The smaller the relative optical path length, the less the refraction of different colors of light, the lower the separation at the intersection with the image plane, and the smaller the chromatic aberration. Properly matching the Abbe number helps correct chromatic aberration in optical lenses, effectively reducing the risk of color fringing in projection and improving projection quality.

[0157] The optical lens according to the above embodiments of this application can employ multiple lenses, such as the nine lenses mentioned above. By rationally allocating the optical parameters of each lens, the optical lens achieves small aperture, miniaturization, high resolution, low sensitivity, large angular resolution, large field of view, long back focal length, low distortion, small principal angle, high illumination, and good manufacturability. It can also be well-matched to, for example, automotive chips without producing vignetting. This optical lens exhibits excellent temperature performance, with minimal changes in imaging effect at high and low temperatures and stable image quality. Therefore, the optical lens according to the above embodiments of this application can better meet the requirements of, for example, automotive applications.

[0158] Specific embodiments of the optical lens applicable to the above-described embodiments are further described below with reference to the accompanying drawings.

[0159] Example 1

[0160] The following is for reference Figure 1 The optical lens according to Embodiment 1 of this application is described.

[0161] like Figure 1 As shown, the optical lens, along the optical axis from the first side to the second side, includes: a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, and a ninth lens L9. The fourth lens L4 and the fifth lens L5 are cemented together to form a cemented lens, and the sixth lens L6, the seventh lens L7, and the eighth lens L8 are also cemented together to form a cemented lens. An aperture stop STO can be positioned between the third lens L3 and the fourth lens L4. The first side surface S1 and the second side surface S2 of the first lens L1 are aspherical.

[0162] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave.

[0163] The second lens L2 has negative optical power, and its first side surface S3 is concave, and its second side surface S4 is concave.

[0164] The third lens L3 has positive optical power, and its first side surface S5 is convex, and its second side surface S6 is convex.

[0165] The fourth lens L4 has negative optical power, and its first side surface S7 is concave, and its second side surface S8 is concave.

[0166] The fifth lens L5 has positive optical power, and its first side surface S9 is convex, and its second side surface S10 is convex.

[0167] The sixth lens L6 has positive optical power, and its first side surface S11 is convex, and its second side surface S12 is convex.

[0168] The seventh lens L7 has negative optical power, and its first side surface S13 is concave, and its second side surface S14 is concave.

[0169] The eighth lens L8 has positive optical power, and its first side surface S15 is convex, and its second side surface S16 is convex.

[0170] The ninth lens L9 has positive optical power, and its first side surface S17 is convex, and its second side surface S18 is convex.

[0171] An image plane IMA is provided on the second side of the optical lens. When the IMA is the imaging plane, light from the object passes through each surface sequentially and is finally imaged on the IMA. When the IMA is the image source plane, light from the IMA passes through each surface sequentially and is finally projected onto the object. A polarizing glass, a first protective glass CG, and a second protective glass CG are disposed between the ninth lens L9 and the image plane IMA. The polarizing glass has a first side surface S19 and a second side surface S20, the first protective glass CG has a first side surface S21 and a second side surface S22, and the second protective glass CG has a first side surface S23 and a second side surface S24. The image plane IMA can be disposed on the second side surface S24. Table 1 shows the basic parameters of the optical lens of Embodiment 1.

[0172] Table 1

[0173]

[0174]

[0175] In Example 1, the surface shape of each aspherical surface can be defined using, but is not limited to, the following aspherical formula:

[0176]

[0177] Where x is the distance vector from the vertex of the aspherical surface at a height of h along the optical axis; c is the paraxial curvature of the aspherical surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient; Ai is the i-th order correction coefficient of the aspherical surface. Table 2 gives the conic coefficient k and higher-order coefficients A4, A6, A8, A10, A12, A14 and A16 that can be used for each aspherical surface S1 and S2 in Example 1.

[0178] Table 2

[0179] Face number k A4 A6 A8 A10 A12 A14 A16 S1 80.0000 3.3408E-04 -5.1568E-06 6.6449E-08 -6.2172E-10 3.4786E-12 -8.7080E-15 0.0000E+00 S2 -12.9890 1.0851E-03 -2.1184E-05 4.5550E-07 -6.9484E-09 6.3729E-11 -2.5457E-13 0.0000E+00

[0180] The optical lens of Example 1 has an MTF peak value exceeding 0.55 at a spatial frequency of 591 p / mm. Therefore, the optical lens given in Example 1 has good imaging quality.

[0181] Example 2

[0182] The following is for reference Figure 2 Describes an optical lens according to Embodiment 2 of this application. For example... Figure 2 As shown, the main difference between this embodiment and Embodiment 1 is that the optical parameters such as the radius of curvature and lens thickness of each lens surface are different. The first side surface S3 of the second lens L2 is a plane. Table 3 shows the basic parameters of the optical lens of Embodiment 2.

[0183] Table 3

[0184]

[0185]

[0186] Table 4 provides the parameters that can be used for each aspherical surface S1 and S2 in Example 2.

[0187] Table 4

[0188] Face number k A4 A6 A8 A10 A12 A14 A16 S1 83.8730 2.9018E-04 -5.0098E-06 6.6431E-08 -6.3724E-10 3.6034E-12 -8.8476E-15 0.0000E+00 S2 -9.9619 1.0547E-03 -2.1661E-05 4.6166E-07 -7.0570E-09 6.2799E-11 -2.3665E-13 0.0000E+00

[0189] The optical lens of Example 2 has an MTF peak value exceeding 0.59 at a spatial frequency of 591 p / mm. Therefore, the optical lens given in Example 2 has good imaging quality.

[0190] Example 3

[0191] The following is for reference Figure 3 Describes an optical lens according to Embodiment 3 of this application. For example... Figure 3 As shown, the main difference between this embodiment and Embodiment 1 is that the optical parameters such as the radius of curvature and lens thickness of each lens surface are different. The first side surface S3 of the second lens L2 is convex. Table 5 shows the basic parameters of the optical lens of Embodiment 3.

[0192] Table 5

[0193]

[0194] Table 6 provides the parameters that can be used for each aspherical surface S1 and S2 in Example 3.

[0195] Table 6

[0196] Face number k A4 A6 A8 A10 A12 A14 A16 S1 102.5600 2.5984E-04 -4.8704E-06 6.6449E-08 -6.3888E-10 3.6107E-12 -8.8842E-15 0.0000E+00 S2 -9.0446 1.0326E-03 -2.1933E-05 4.6340E-07 -7.0275E-09 6.2586E-11 -2.3813E-13 0.0000E+00

[0197] The optical lens of Example 3 has an MTF peak value exceeding 0.61 at a spatial frequency of 591 p / mm. Therefore, the optical lens given in Example 3 has good imaging quality.

[0198] Example 4

[0199] The following is for reference Figure 4 Describes an optical lens according to Embodiment 4 of this application. For example... Figure 4 As shown, the main difference between this embodiment and Embodiment 1 is that the optical parameters such as the radius of curvature and lens thickness of each lens surface are different. The second side surface S4 of the second lens L2 is a plane. Table 7 shows the basic parameters of the optical lens of Embodiment 4.

[0200] Table 7

[0201]

[0202] Table 8 provides the conic coefficient k and higher-order coefficients A4, A6, A8, A10, A12 and A16 that can be used for the aspherical surfaces S1 and S2 in Example 4.

[0203] Table 8

[0204] Face number k A4 A6 A8 A10 A12 A14 A16 S1 91.8220 2.9791E-04 -5.1897E-06 6.7003E-08 -6.2952E-10 3.5773E-12 -9.1881E-15 0.0000E+00 S2 -6.9098 1.1493E-03 -2.1200E-05 4.4012E-07 -6.9225E-09 6.7930E-11 -2.9891E-13 0.0000E+00

[0205] The optical lens of Example 4 has an MTF peak value exceeding 0.6 at a spatial frequency of 591 p / mm. Therefore, the optical lens given in Example 4 has good imaging quality.

[0206] Example 5

[0207] The following is for reference Figure 5 Describes an optical lens according to Embodiment 5 of this application. For example... Figure 5 As shown, the main difference between this embodiment and Embodiment 1 is that the optical parameters such as the radius of curvature and lens thickness of each lens surface are different. The second side surface S4 of the second lens L2 is convex. Table 9 shows the basic parameters of the optical lens of Embodiment 5.

[0208] Table 9

[0209]

[0210]

[0211] Table 10 provides the parameters that can be used for each of the aspherical surfaces S1 and S2 in Example 5.

[0212] In Example 5, the first side surface S1 and the second side surface S2 of the first lens L1 are both aspherical surfaces. Table 8 shows the conic coefficient k and the higher-order coefficients A4, A6, A8, A10 and A12 that can be used for each aspherical surface S1 and S2 in Example 5.

[0213] Table 10

[0214] Face number k A4 A6 A8 A10 A12 A14 A16 S1 115.3700 3.0439E-04 -5.1382E-06 6.6593E-08 -6.2957E-10 3.5978E-12 -9.3351E-15 0.0000E+00 S2 -7.0761 1.1448E-03 -2.0785E-05 4.3655E-07 -6.9127E-09 6.8860E-11 -3.1130E-13 0.0000E+00

[0215] like Figure 29As shown, the optical lens of Example 5 has an MTF peak value exceeding 0.73 at a spatial frequency of 591 p / mm. Therefore, the optical lens provided in Example 5 has good imaging quality.

[0216] Example 6

[0217] The following is for reference Figure 6 Describes an optical lens according to Embodiment 6 of this application. For example... Figure 6 As shown, the main difference between this embodiment and Embodiment 1 is that the optical parameters such as the radius of curvature and lens thickness of each lens surface are different. The first side surface S5 of the third lens L3 is a plane. Table 11 shows the basic parameters of the optical lens of Embodiment 6.

[0218] Table 11

[0219]

[0220]

[0221] Table 12 provides the parameters that can be used for each of the aspherical surfaces S1 and S2 in Example 6.

[0222] Table 12

[0223] Face number k A4 A6 A8 A10 A12 A14 A16 S1 71.6890 3.2243E-04 -5.1621E-06 6.6622E-08 -6.3594E-10 3.5693E-12 -8.6914E-15 0.0000E+00 S2 -10.6920 1.0850E-03 -2.1024E-05 4.5545E-07 -7.0585E-09 6.3513E-11 -2.4261E-13 0.0000E+00

[0224] The optical lens of Example 6 has an MTF peak value exceeding 0.54 at a spatial frequency of 591 p / mm. Therefore, the optical lens given in Example 6 has good imaging quality.

[0225] Example 7

[0226] The following is for reference Figure 7 Describes an optical lens according to Embodiment 7 of this application. For example... Figure 7 As shown, the main difference between this embodiment and Embodiment 1 is that the optical parameters such as the radius of curvature and lens thickness of each lens surface are different. The second side surface S4 of the second lens L2 is convex. The first side surface S5 of the third lens L3 is concave. Table 13 shows the basic parameters of the optical lens of Embodiment 7.

[0227] Table 13

[0228]

[0229]

[0230] Table 14 provides the parameters that can be used for each aspherical surface S1 and S2 in Example 7.

[0231] Table 14

[0232] Face number k A4 A6 A8 A10 A12 A14 A16 S1 66.7150 3.2505E-04 -5.2122E-06 6.6940E-08 -6.3463E-10 3.5561E-12 -8.6899E-15 0.0000E+00 S2 -10.7760 1.0892E-03 -2.1182E-05 4.5633E-07 -7.0436E-09 6.3483E-11 -2.4372E-13 0.0000E+00

[0233] The optical lens of Example 7 has an MTF peak value exceeding 0.49 at a spatial frequency of 591 p / mm. Therefore, the optical lens provided in Example 7 has good imaging quality.

[0234] Example 8

[0235] The following is for reference Figure 8 Describes an optical lens according to Embodiment 8 of this application. For example... Figure 8 As shown, the main difference between this embodiment and Embodiment 1 is that the optical parameters such as the radius of curvature and lens thickness of each lens surface are different. The second side surface S6 of the third lens L3 is a plane. Table 15 shows the basic parameters of the optical lens of Embodiment 8.

[0236] Table 15

[0237]

[0238] Table 16 provides the parameters that can be used for each of the aspherical surfaces S1 and S2 in Example 8.

[0239] Table 16

[0240] Face number k A4 A6 A8 A10 A12 A14 A16 S1 119.2000 3.3946E-04 -4.8665E-06 6.5439E-08 -6.4066E-10 3.6356E-12 -8.8726E-15 0.0000E+00 S2 -21.5430 9.9439E-04 -2.0503E-05 4.6296E-07 -7.1117E-09 6.2361E-11 -2.3097E-13 0.0000E+00

[0241] The optical lens of Example 8 has an MTF peak value exceeding 0.61 at a spatial frequency of 591 p / mm. Therefore, the optical lens provided in Example 8 has good imaging quality.

[0242] Example 9

[0243] The following is for reference Figure 9 Describes an optical lens according to Embodiment 9 of this application. For example... Figure 9 As shown, the main difference between this embodiment and Embodiment 1 is that the optical parameters such as the radius of curvature and lens thickness of each lens surface are different. The first side surface S17 of the ninth lens L9 is a plane. Table 17 shows the basic parameters of the optical lens of Embodiment 9.

[0244] Table 17

[0245]

[0246] Table 18 provides the parameters that can be used for each aspherical surface S1 and S2 in Example 9.

[0247] Table 18

[0248] Face number k A4 A6 A8 A10 A12 A14 A16 S1 115.7900 3.7039E-04 -4.9174E-06 6.6164E-08 -6.3787E-10 3.6445E-12 -9.2265E-15 0.0000E+00 S2 -29.2030 9.9958E-04 -2.0577E-05 4.6650E-07 -7.0625E-09 6.2431E-11 -2.4000E-13 0.0000E+00

[0249] The optical lens of Example 9 has an MTF peak value exceeding 0.32 at a spatial frequency of 591 p / mm. Therefore, the optical lens provided in Example 9 has good imaging quality.

[0250] Example 10

[0251] The following is for reference Figure 10 Describes an optical lens according to Embodiment 10 of this application. For example... Figure 10 As shown, the main difference between this embodiment and Embodiment 1 is that the optical parameters such as the radius of curvature and lens thickness of each lens surface are different. The second side surface S14 of the seventh lens L7 is convex. The first side surface S15 of the eighth lens L8 is concave. The first side surface S17 of the ninth lens L9 is concave. The first side surface S1 of the first lens L1 has at least one inflection point. Table 19 shows the basic parameter table of the optical lens of Embodiment 10.

[0252] Table 19

[0253]

[0254]

[0255] Table 20 provides the parameters that can be used for each aspherical surface S1 and S2 in Example 9.

[0256] Table 20

[0257] Face number k A4 A6 A8 A10 A12 A14 A16 S1 -4047700000.0000 3.4141E-04 -5.0916E-06 6.5667E-08 -6.4013E-10 3.6495E-12 -8.8756E-15 0.0000E+00 S2 -25.2430 9.6211E-04 -2.0576E-05 4.6099E-07 -7.1291E-09 6.2271E-11 -2.3050E-13 0.0000E+00

[0258] The optical lens of Example 10 has an MTF peak value exceeding 0.38 at a spatial frequency of 591 p / mm. Therefore, the optical lens provided in Example 10 has good imaging quality.

[0259] Example 11

[0260] The following is for reference Figure 11 Describes an optical lens according to Embodiment 11 of this application. For example... Figure 11 As shown, the main difference between this embodiment and Embodiment 1 is that the optical parameters such as the radius of curvature and lens thickness of each lens surface are different. The second side surface S14 of the seventh lens L7 is a plane. The first side surface S15 of the eighth lens L8 is a plane. The first side surface S1 of the first lens L1 has at least one inflection point. Table 21 shows the basic parameter table of the optical lens of Embodiment 11.

[0261] Table 21

[0262]

[0263]

[0264] Table 22 provides the parameters that can be used for each of the aspherical surfaces S1 and S2 in Example 11.

[0265] Table 22

[0266] Face number k A4 A6 A8 A10 A12 A14 A16 S1 -2.4134E+29 3.6954E-04 -4.8659E-06 6.6214E-08 -6.4346E-10 3.6186E-12 -8.8554E-15 0.0000E+00 S2 -30.9250 9.8526E-04 -2.0032E-05 4.6522E-07 -7.0993E-09 6.2355E-11 -2.3658E-13 0.0000E+00

[0267] The optical lens of Example 11 has an MTF peak value exceeding 0.39 at a spatial frequency of 591 p / mm. Therefore, the optical lens given in Example 11 has good imaging quality.

[0268] Example 12

[0269] The following is for reference Figure 12 Describes an optical lens according to Embodiment 12 of this application. For example... Figure 12 As shown, the main difference between this embodiment and Embodiment 1 is that the optical parameters such as the radius of curvature and lens thickness of each lens surface are different. The second side surface S6 of the third lens L3 is concave. The second side surface S8 of the fourth lens L4 is flat. The first side surface S9 of the fifth lens L5 is flat. Table 23 shows the basic parameter table of the optical lens of Embodiment 12.

[0270] Table 23

[0271]

[0272] Table 24 provides the parameters that can be used for each of the aspherical surfaces S1 and S2 in Example 12.

[0273] Table 24

[0274] Face number k A4 A6 A8 A10 A12 A14 A16 S1 141.8800 3.5881E-04 -4.9264E-06 6.6179E-08 -6.4170E-10 3.5758E-12 -8.7359E-15 0.0000E+00 S2 -15.8380 1.0853E-03 -2.0384E-05 4.6386E-07 -7.0853E-09 6.2601E-11 -2.4411E-13 0.0000E+00

[0275] The optical lens of Example 12 has an MTF peak value exceeding 0.45 at a spatial frequency of 591 p / mm. Therefore, the optical lens provided in Example 12 has good imaging quality.

[0276] Example 13

[0277] The following is for reference Figure 13 Describes an optical lens according to Embodiment 13 of this application. For example... Figure 13 As shown, the main difference between this embodiment and Embodiment 1 is that the optical parameters such as the radius of curvature and lens thickness of each lens surface are different. The second side surface S6 of the third lens L3 is concave. The second side surface S8 of the fourth lens L4 is convex. The first side surface S9 of the fifth lens L5 is concave. Table 25 shows the basic parameter table of the optical lens of Embodiment 13.

[0278] Table 25

[0279]

[0280] Table 26 provides the parameters that can be used for each of the aspherical surfaces S1 and S2 in Example 13.

[0281] Table 26

[0282] Face number k A4 A6 A8 A10 A12 A14 A16 S1 459.6400 3.6800E-04 -4.8532E-06 6.5428E-08 -6.4164E-10 3.6156E-12 -8.6213E-15 0.0000E+00 S2 -15.2550 1.0954E-03 -1.9639E-05 4.6039E-07 -7.1476E-09 6.3266E-11 -2.3140E-13 0.0000E+00

[0283] The optical lens of Example 13 has an MTF peak value exceeding 0.47 at a spatial frequency of 591 p / mm. Therefore, the optical lens given in Example 13 has good imaging quality.

[0284] Example 14

[0285] The following is for reference Figure 14 Describes an optical lens according to Embodiment 14 of this application. For example... Figure 14 As shown, the main difference between this embodiment and Embodiment 1 is that the optical parameters such as the radius of curvature and lens thickness of each lens surface are different. The first side surface S7 of the fourth lens L4 is convex. The second side surface S10 of the fifth lens L5 is concave. The first side surface S1 of the first lens L1 has at least one inflection point. Table 27 shows the basic parameter table of the optical lens of Embodiment 14.

[0286] Table 27

[0287]

[0288] Table 28 provides the parameters that can be used for each of the aspherical surfaces S1 and S2 in Example 14.

[0289] Table 28

[0290] Face number k A4 A6 A8 A10 A12 A14 A16 S1 -3.8441E+22 2.2125E-04 -3.7233E-06 6.3074E-08 -6.7613E-10 3.8436E-12 -8.8757E-15 0.0000E+00 S2 -36.8910 7.6252E-04 -1.9236E-05 4.6885E-07 -7.0700E-09 5.7765E-11 -1.9481E-13 0.0000E+00

[0291] The optical lens of Example 14 has an MTF peak value exceeding 0.51 at a spatial frequency of 591 p / mm. Therefore, the optical lens given in Example 14 has good imaging quality.

[0292] Example 15

[0293] The following is for reference Figure 15 Describes an optical lens according to Embodiment 15 of this application. For example... Figure 15 As shown, the main difference between this embodiment and Embodiment 1 is that the optical parameters such as the radius of curvature and lens thickness of each lens surface are different. The first side surface S7 of the fourth lens L4 is convex, and the first side surface S11 of the sixth lens L6 is concave. Table 29 shows the basic parameter table of the optical lens of Embodiment 15.

[0294] Table 29

[0295]

[0296]

[0297] Table 30 provides the parameters that can be used for each of the aspherical surfaces S1 and S2 in Example 15.

[0298] Table 30

[0299] Face number k A4 A6 A8 A10 A12 A14 A16 S1 2584.0000 4.2565E-04 -4.9283E-06 6.2058E-08 -6.5542E-10 4.5845E-12 -1.4514E-14 0.0000E+00 S2 -48.8630 9.1956E-04 -1.6735E-05 4.1216E-07 -7.4234E-09 7.9397E-11 -3.6101E-13 0.0000E+00

[0300] The optical lens of Example 15 has an MTF peak value exceeding 0.4 at a spatial frequency of 591 p / mm. Therefore, the optical lens provided in Example 15 has good imaging quality.

[0301] Example 16

[0302] The following is for reference Figure 16 Describes an optical lens according to Embodiment 16 of this application. For example... Figure 16 As shown, the main difference between this embodiment and Embodiment 1 is that the optical parameters such as the radius of curvature and lens thickness of each lens surface are different. Table 31 shows the basic parameters of the optical lens of Embodiment 16.

[0303] Table 31

[0304]

[0305]

[0306] Table 32 provides the parameters that can be used for each of the aspherical surfaces S1 and S2 in Example 16.

[0307] Table 32

[0308] Face number k A4 A6 A8 A10 A12 A14 A16 S1 71.1730 3.2642E-04 -5.1625E-06 6.6563E-08 -6.2079E-10 3.4833E-12 -8.6457E-15 -2.6849E-19 S2 -13.7930 1.0783E-03 -2.1256E-05 4.5507E-07 -6.9397E-09 6.3878E-11 -2.5465E-13 -7.2338E-18

[0309] The optical lens of Example 16 has an MTF peak value exceeding 0.58 at a spatial frequency of 591 p / mm. Therefore, the optical lens provided in Example 16 has good imaging quality.

[0310] Example 17 The following is for reference Figure 17 Describes an optical lens according to Embodiment 17 of this application. For example... Figure 17 As shown, the main difference between this embodiment and Embodiment 1 is that the optical parameters such as the radius of curvature and lens thickness of each lens surface are different. Table 33 shows the basic parameters of the optical lens of Embodiment 17.

[0312] Table 33

[0313]

[0314] Table 34 provides the parameters that can be used for each of the aspherical surfaces S1 and S2 in Example 17.

[0315] Table 34

[0316] Face number k A4 A6 A8 A10 A12 A14 A16 S1 77.8740 3.3343E-04 -5.1627E-06 6.6431E-08 -6.2154E-10 3.4810E-12 -8.7000E-15 5.5675E-19 S2 -12.7810 1.0830E-03 -2.1202E-05 4.5543E-07 -6.9487E-09 6.3724E-11 -2.5465E-13 4.6457E-18

[0317] like Figure 30 As shown, the optical lens of Example 17 has an MTF peak value exceeding 0.66 at a spatial frequency of 591 p / mm. Therefore, the optical lens provided in Example 17 has good imaging quality.

[0318] Example 18

[0319] The following is for reference Figure 18 Describes an optical lens according to Embodiment 18 of this application. For example... Figure 18 As shown, the main difference between this embodiment and Embodiment 1 is that the optical parameters such as the radius of curvature and lens thickness of each lens surface are different. The first side surface S3 of the second lens L2 is concave. The first side surface S5 of the third lens L3 is flat. The first side surface S7 of the fourth lens L4 is convex. Table 35 shows the basic parameter table of the optical lens of Embodiment 18.

[0320] Table 35

[0321]

[0322] Table 36 provides the parameters that can be used for each of the aspherical surfaces S1 and S2 in Example 18.

[0323] Table 36

[0324] Face number k A4 A6 A8 A10 A12 A14 A16 S1 151.6900 3.0155E-04 -5.1536E-06 6.6565E-08 -6.2914E-10 3.5377E-12 -1.0656E-14 0.0000E+00 S2 -6.5539 1.1639E-03 -2.0579E-05 4.3579E-07 -6.8649E-09 6.7394E-11 -3.5457E-13 0.0000E+00

[0325] The optical lens of Example 18 has an MTF peak value exceeding 0.79 at a spatial frequency of 591 p / mm. Therefore, the optical lens provided in Example 18 has good imaging quality.

[0326] Example 19

[0327] The following is for reference Figure 19 Describes an optical lens according to Embodiment 19 of this application. For example... Figure 19 As shown, the main difference between this embodiment and Embodiment 1 is that the optical parameters such as the radius of curvature and lens thickness of each lens surface are different. The second side surface S14 of the seventh lens L is convex. The first side surface S15 of the eighth lens L8 is concave. The fourth lens L4 and the fifth lens L5 are cemented together to form a cemented lens, and the sixth lens L6 and the seventh lens L7 are cemented together to form a cemented lens. Table 37 shows the basic parameter table of the optical lens of Embodiment 19.

[0328] Table 37

[0329]

[0330]

[0331] Table 38 provides the parameters that can be used for each of the aspherical surfaces S1 and S2 in Example 19.

[0332] Table 38

[0333] Face number k A4 A6 A8 A10 A12 A14 A16 S1 -10.0270 -7.2267E-05 2.1466E-06 -2.4336E-08 1.3544E-10 -2.8469E-13 -9.2847E-17 -1.4736E-19 S2 -3.7460 2.9790E-04 -4.0621E-06 8.9618E-08 -1.3422E-09 1.0592E-11 -3.3306E-14 -4.2619E-18

[0334] like Figure 31 As shown, the optical lens of Example 19 has an MTF peak value exceeding 0.82 at a spatial frequency of 591 p / mm. Therefore, the optical lens provided in Example 19 has good imaging quality.

[0335] Example 20

[0336] The following is for reference Figure 20 Describes an optical lens according to Embodiment 20 of this application. For example... Figure 20 As shown, the main difference between this embodiment and Embodiment 1 is that the optical parameters such as the radius of curvature and lens thickness of each lens surface are different. The fourth lens L4 and the fifth lens L5 are cemented together to form a cemented lens, and the seventh lens L7 and the eighth lens L8 are cemented together to form a cemented lens. Table 39 shows the basic parameters of the optical lens of Embodiment 20.

[0337] Table 39

[0338]

[0339]

[0340] Table 40 provides the parameters that can be used for each of the aspherical surfaces S1 and S2 in Example 19.

[0341] Table 40

[0342] Face number k A4 A6 A8 A10 A12 A14 A16 S1 106.7500 3.5111E-04 -5.5494E-06 6.9453E-08 -6.3257E-10 3.4113E-12 -8.0070E-15 0.0000E+00 S2 -15.9010 1.0765E-03 -2.2066E-05 4.4312E-07 -6.3386E-09 5.2552E-11 -1.8673E-13 0.0000E+00

[0343] The optical lens of Example 20 has an MTF peak value exceeding 0.61 at a spatial frequency of 591 p / mm. Therefore, the optical lens provided in Example 20 has good imaging quality.

[0344] Example 21

[0345] The following is for reference Figure 21 Describes an optical lens according to Embodiment 21 of this application. For example... Figure 21As shown, the main difference between this embodiment and Embodiment 1 lies in the optical parameters such as the radius of curvature and lens thickness of each lens surface. The fourth lens L4 has positive optical power, with its first side surface S7 and second side surface S8 being convex. The fifth lens L5 has negative optical power, with its first side surface S9 and second side surface S10 being concave. The seventh lens L7 has a convex second side surface S14. The eighth lens L8 has a concave first side surface S15. The fourth lens L4 and the fifth lens L5 are cemented together to form a cemented lens, and the sixth lens L6 and the seventh lens L7 are cemented together to form a cemented lens. Table 41 shows the basic parameters of the optical lens in Embodiment 21.

[0346] Table 41

[0347]

[0348]

[0349] Table 42 provides the parameters that can be used for each of the aspherical surfaces S1 and S2 in Example 21.

[0350] Table 42

[0351] Face number k A4 A6 A8 A10 A12 A14 A16 S1 -6.0371 -3.0338E-05 8.9928E-07 -7.7747E-09 2.9454E-11 9.1707E-15 -2.7366E-16 -6.2786E-19 S2 -4.1328 3.5216E-04 -3.9445E-06 6.7590E-08 -8.2088E-10 5.8779E-12 -2.0296E-14 8.9773E-18

[0352] The optical lens of Example 21 has an MTF peak value exceeding 0.6 at a spatial frequency of 591 p / mm. Therefore, the optical lens provided in Example 21 has good imaging quality.

[0353] Example 22

[0354] The following is for reference Figure 22 Describes an optical lens according to Embodiment 22 of this application. For example... Figure 22 As shown, the main difference between this embodiment and Embodiment 1 is that the optical parameters such as the radius of curvature and lens thickness of each lens surface are different. The fourth lens L4 has positive optical power, and its second side surface S8 is convex. The fifth lens L5 has negative optical power, and its first side surface S9 is concave. The fourth lens L4 and the fifth lens L5 are cemented together to form a cemented lens, and the seventh lens L7 and the eighth lens L8 are cemented together to form a cemented lens. Table 43 shows the basic parameters of the optical lens of Embodiment 22.

[0355] Table 43

[0356]

[0357] Table 44 provides the parameters that can be used for each of the aspherical surfaces S1 and S2 in Example 22.

[0358] Table 44

[0359] Face number k A4 A6 A8 A10 A12 A14 A16 S1 156.3700 3.0867E-04 -5.6802E-06 7.7413E-08 -7.0196E-10 3.6605E-12 -8.3742E-15 0.0000E+00 S2 -12.9000 1.0230E-03 -2.1243E-05 4.0364E-07 -5.2041E-09 3.9563E-11 -1.3244E-13 0.0000E+00

[0360] The optical lens of Example 22 has an MTF peak value exceeding 0.5 at a spatial frequency of 591 p / mm. Therefore, the optical lens provided in Example 22 has good imaging quality.

[0361] Example 23

[0362] The following is for reference Figure 23 Describes an optical lens according to Embodiment 23 of this application. For example... Figure 23 As shown, the main difference between this embodiment and Embodiment 1 lies in the optical parameters such as the radius of curvature and lens thickness of each lens surface. The fourth lens L4 has positive optical power, and its first side surface S7 and second side surface S8 are convex. The fifth lens L5 has negative optical power, and its first side surface S9 and second side surface S10 are concave. The first side surface S13 of the seventh lens L7 is convex. The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens, and the seventh lens L7 and the eighth lens L8 are cemented together to form a cemented lens. Table 45 shows the basic parameters of the optical lens of Embodiment 23.

[0363] Table 45

[0364]

[0365] Table 46 provides the parameters that can be used for each of the aspherical surfaces S1 and S2 in Example 23.

[0366] Table 46

[0367] Face number k A4 A6 A8 A10 A12 A14 A16 S1 48.7910 2.3952E-04 -1.0327E-06 3.8466E-09 7.8237E-11 -8.5319E-13 3.8224E-15 4.7478E-19 S2 13.1260 3.2601E-04 -4.9008E-07 -2.4667E-08 1.1112E-09 -1.4068E-11 1.2321E-13 -3.9421E-16

[0368] The optical lens of Example 23 has an MTF peak value exceeding 0.56 at a spatial frequency of 591 p / mm. Therefore, the optical lens provided in Example 23 has good imaging quality.

[0369] Example 24

[0370] The following is for reference Figure 24 Describes an optical lens according to Embodiment 24 of this application. For example... Figure 24 As shown, the main difference between this embodiment and Embodiment 1 lies in the optical parameters such as the radius of curvature and lens thickness of each lens surface. The fourth lens L4 has positive optical power, and its first side surface S7 and second side surface S8 are convex. The fifth lens L5 has negative optical power, and its second side surface S10 is concave. The sixth lens L6 and the seventh lens L7 are cemented together to form a cemented lens. Table 47 shows the basic parameters of the optical lens in Embodiment 24.

[0371] Table 47

[0372]

[0373] Table 48 provides the parameters that can be used for each of the aspherical surfaces S1 and S2 in Example 24.

[0374] Table 48

[0375] Face number k A4 A6 A8 A10 A12 A14 A16 S1 550.2900 3.7137E-04 -5.6854E-06 7.3372E-08 -6.6493E-10 3.5474E-12 -8.3070E-15 0.0000E+00 S2 -15.3100 1.0805E-03 -2.1650E-05 4.6039E-07 -6.8692E-09 6.0430E-11 -2.2886E-13 0.0000E+00

[0376] The optical lens of Example 24 has an MTF peak value exceeding 0.54 at a spatial frequency of 591 p / mm. Therefore, the optical lens provided in Example 24 has good imaging quality.

[0377] Example 25

[0378] The following is for reference Figure 25 Describes an optical lens according to Embodiment 25 of this application. For example... Figure 25 As shown, the main difference between this embodiment and Embodiment 1 lies in the optical parameters such as the radius of curvature and lens thickness of each lens surface. The first side surface S7 of the fourth lens L4 is convex. The sixth lens L6 has negative optical power; its first side surface S11 is concave, and its second side surface S12 is concave. The seventh lens L7 has positive optical power; its first side surface S13 is convex, and its second side surface S14 is convex. The fourth lens L4 and the fifth lens L5 are cemented together to form a cemented lens, and the sixth lens L6 and the seventh lens L7 are cemented together to form a cemented lens. Table 49 shows the basic parameters of the optical lens of Embodiment 25.

[0379] Table 49

[0380]

[0381]

[0382] Table 50 provides the parameters that can be used for each of the aspherical surfaces S1 and S2 in Example 25.

[0383] Table 50

[0384] Face number k A4 A6 A8 A10 A12 A14 A16 S1 13.0650 3.2051E-04 -4.1041E-06 3.7754E-08 -2.6906E-10 1.2493E-12 -2.7464E-15 4.8455E-21 S2 1.4848 3.2433E-04 -4.1992E-06 4.0742E-08 -4.5510E-10 3.4189E-12 -1.1811E-14 2.0003E-19

[0385] The optical lens of Example 25 has an MTF peak value exceeding 0.59 at a spatial frequency of 591 p / mm. Therefore, the optical lens provided in Example 25 has good imaging quality.

[0386] Example 26

[0387] The following is for reference Figure 26 Describes an optical lens according to Embodiment 26 of this application. For example... Figure 26 As shown, the main difference between this embodiment and Embodiment 1 is that the optical parameters such as the radius of curvature and lens thickness of each lens surface are different. The first side surface S7 of the fourth lens L4 is convex. The sixth lens L6 has negative optical power, and the first side surface S11 of the sixth lens L6 is concave. The first side surface S13 of the seventh lens L7 is convex. The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens, and the seventh lens L7 and the eighth lens L8 are cemented together to form a cemented lens. Table 51 shows the basic parameter table of the optical lens of Embodiment 26.

[0388] Table 51

[0389]

[0390]

[0391] Table 52 provides the parameters that can be used for each of the aspherical surfaces S1 and S2 in Example 26.

[0392] Table 52

[0393] Face number k A4 A6 A8 A10 A12 A14 A16 S1 -2.1922 1.4802E-04 -2.3510E-06 2.1757E-08 -1.2049E-10 3.4652E-13 -3.4161E-16 0.0000E+00 S2 -5.0494 4.9363E-04 -5.0742E-06 2.9550E-08 1.0130E-10 -2.6818E-12 1.1801E-14 0.0000E+00

[0394] The optical lens of Example 26 has an MTF peak value exceeding 0.53 at a spatial frequency of 591 p / mm. Therefore, the optical lens provided in Example 26 has good imaging quality.

[0395] Example 27

[0396] The following is for reference Figure 27 Describes an optical lens according to Embodiment 27 of this application. For example... Figure 27 As shown, the main difference between this embodiment and Embodiment 1 is that the optical parameters such as the radius of curvature and lens thickness of each lens surface are different. The second side surface S8 of the fourth lens L4 is convex. The fifth lens L5 has negative optical power, and the second side surface S10 of the fifth lens L5 is concave. The first side surface S13 of the seventh lens L7 is convex. The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens, and the seventh lens L7 and the eighth lens L8 are cemented together to form a cemented lens. Table 53 shows the basic parameter table of the optical lens of Embodiment 27.

[0397] Table 53

[0398]

[0399]

[0400] Table 54 provides the parameters that can be used for each of the aspherical surfaces S1 and S2 in Example 27.

[0401] Table 54

[0402] Face number k A4 A6 A8 A10 A12 A14 A16 S1 -15.1720 3.3972E-04 -3.1761E-06 5.0478E-08 -4.3044E-10 1.4211E-12 7.4710E-15 -2.6113E-17 S2 19.1920 3.9300E-04 -6.6881E-06 1.9568E-07 -2.3640E-09 -1.0231E-11 5.4163E-13 -3.3354E-15

[0403] The optical lens of Example 27 has an MTF peak value exceeding 0.51 at a spatial frequency of 591 p / mm. Therefore, the optical lens provided in Example 27 has good imaging quality.

[0404] Example 28

[0405] The following is for reference Figure 28 Describes an optical lens according to Embodiment 28 of this application. For example... Figure 28 As shown, the main difference between this embodiment and Embodiment 1 lies in the optical parameters such as the radius of curvature and lens thickness of each lens surface. The first side surface S1 of the first lens L1 is concave. The second lens L2 has positive optical power, and its second side surface S4 is convex. The second side surface S6 of the third lens L3 is concave. The first side surface S7 of the fourth lens L4 is convex. The sixth lens L6 has negative optical power, and its first side surface S11 is concave. The first side surface S13 of the seventh lens L7 is convex. The first side surface S1 of the first lens L1 has at least one inflection point. Table 55 shows the basic parameters of the optical lens of Embodiment 28.

[0406] Table 55

[0407]

[0408] Table 56 provides the parameters that can be used for each of the aspherical surfaces S1 and S2 in Example 28.

[0409] Table 56

[0410] Face number k A4 A6 A8 A10 A12 A14 A16 S1 46.3470 2.1318E-04 -3.0957E-06 4.5032E-08 -5.0739E-10 3.4250E-12 -1.0088E-14 1.0983E-18 S2 0.1895 3.2489E-04 -8.4741E-06 3.3831E-07 -9.4518E-09 1.4053E-10 -8.3672E-13 -3.5243E-16

[0411] The optical lens of Example 28 has an MTF peak value exceeding 0.5 at a spatial frequency of 591 p / mm. Therefore, the optical lens provided in Example 28 has good imaging quality.

[0412] Tables 57-1 and 57-2 provide the basic parameters of the optical lenses in Examples 1-28, as detailed in the tables below.

[0413] Table 57-1

[0414]

[0415] Table 57-2

[0416]

[0417] In summary, the relationships in each embodiment of Examples 1-28 satisfy the relationships shown in Tables 58-1 and 58-2.

[0418] Table 58-1

[0419]

[0420]

[0421]

[0422] Table 58-2

[0423]

[0424]

[0425] This application also provides an electronic device, which includes a first device and / or a second device. The first device may be, for example, a lidar transmitter, and the second device may be, for example, a lidar receiver. The first device may include the optical lens and light source as described in the exemplary embodiments above. The light source is located on the second side of the optical lens, and the light emitted by the light source is projected onto the first side of the optical lens after passing through the optical lens, forming an image or illuminating an area on the first side. The second device may include the optical lens as described in the exemplary embodiments above and an imaging element for converting the optical image formed by the optical lens into an electrical signal. The imaging element is disposed on the second side of the optical lens (e.g., disposed on the imaging surface), and the imaging element may be, for example, a photocoupled device (CCD) or a complementary metal oxide semiconductor device (CMOS). The light from the first side is imaged on the second side after passing through the optical lens.

[0426] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An optical lens, characterized in that, Along the optical axis, from the first side to the second side, the following are included in sequence: A first lens with negative optical power has a concave second side surface; A second lens with optical power; A third lens with positive optical power; A fourth lens with optical power; A fifth lens with optical power; A sixth lens with optical power; A seventh lens with optical power; An eighth lens with positive optical power; A ninth lens with positive optical power; Wherein, the optical power of the fourth lens is opposite to that of the fifth lens, or the optical power of the fifth lens is opposite to that of the sixth lens, or the optical power of the sixth lens is opposite to that of the seventh lens, or the optical power of the seventh lens is opposite to that of the eighth lens; The optical lens has nine lenses with optical power. The optical lens satisfies: 0.244≤(T12+T23+T34) / TL≤0.703; Wherein, T12 is the air gap between the first lens and the second lens, T23 is the air gap between the second lens and the third lens, T34 is the air gap between the third lens and the fourth lens, and TL is the lens group length of the optical lens.

2. The optical lens according to claim 1, characterized in that, The optical lens must satisfy at least one of the following: The first side surface of the first lens is convex; or, the first side surface of the first lens is concave. The second lens has negative optical power, with a first concave side and a second concave side; or, the second lens has negative optical power, with a first flat side and a second concave side; or, the second lens has negative optical power, with a first convex side and a second concave side; or, the second lens has negative optical power, with a first concave side and a second flat side; or, the second lens has negative optical power, with a first concave side and a second convex side; or, the second lens has positive optical power, with a first concave side and a second convex side. The first side surface of the third lens is convex, and the second side surface of the third lens is convex; or, the first side surface of the third lens is flat, and the second side surface of the third lens is convex; or, the first side surface of the third lens is concave, and the second side surface of the third lens is convex; or, the first side surface of the third lens is convex, and the second side surface of the third lens is flat; or, the first side surface of the third lens is convex, and the second side surface of the third lens is concave. The fourth lens has negative optical power, and its first side surface is concave, and its second side surface is concave; or, the fourth lens has negative optical power, and its first side surface is convex, and its second side surface is concave; or, the fourth lens has negative optical power, and its first side surface is concave, and its second side surface is flat; or, the fourth lens has negative optical power, and its first side surface is concave, and its second side surface is convex; or, the fourth lens has positive optical power, and its first side surface is convex, and its second side surface is convex; or, the fourth lens has positive optical power, and its first side surface is concave, and its second side surface is convex. The fifth lens has positive optical power, and its first side surface is convex, and its second side surface is convex; or, the fifth lens has positive optical power, its first side surface is flat, and its second side surface is convex; or, the fifth lens has positive optical power, its first side surface is concave, and its second side surface is convex; or, the fifth lens has positive optical power, its first side surface is convex, and its second side surface is concave; or, the fifth lens has negative optical power, its first side surface is concave, and its second side surface is concave; or, the fifth lens has negative optical power, its first side surface is concave, and its second side surface is convex; or, the fifth lens has negative optical power, its first side surface is convex, and its second side surface is concave. The sixth lens has positive optical power, and its first side surface is convex, and its second side surface is convex; or, the sixth lens has positive optical power, and its first side surface is concave, and its second side surface is convex; or, the sixth lens has negative optical power, and its first side surface is concave, and its second side surface is concave; or, the sixth lens has negative optical power, and its first side surface is concave, and its second side surface is convex. The seventh lens has negative optical power, and its first side surface is concave, and its second side surface is concave; or, the seventh lens has negative optical power, its first side surface is concave, and its second side surface is convex; or, the seventh lens has negative optical power, its first side surface is concave, and its second side surface is planar; or, the seventh lens has negative optical power, its first side surface is convex, and its second side surface is concave; or, the seventh lens has positive optical power, its first side surface is convex, and its second side surface is convex. The first side surface of the eighth lens is convex, and the second side surface of the eighth lens is convex; or, the first side surface of the eighth lens is concave, and the second side surface of the eighth lens is convex; or, the first side surface of the eighth lens is flat, and the second side surface of the eighth lens is convex. The first side surface of the ninth lens is convex, and the second side surface of the ninth lens is convex; or, the first side surface of the ninth lens is flat, and the second side surface of the ninth lens is convex; or, the first side surface of the ninth lens is concave, and the second side surface of the ninth lens is convex.

3. The optical lens according to claim 1 or 2, characterized in that, The optical lens satisfies at least one of the following relationships: 0.094≤F / TTL≤0.205, 1.435≤BFL / F≤3.18, 44.746°≤(FOV×F) / H≤65.134°, 0.133°≤ TTL / H / FOV≤0.313°, 3.329≤TTL / DMAX≤6.188, 0.382≤(F*θ) / D≤0.802, 0.027°≤D / H / FOV≤0.049°, 0.063≤D / H / F*mm≤0.202, 0.829≤F / H≤1.904, 1.7≤F / ENPD≤2.99, 0.077≤F / ENPD / D*mm≤0.183, 0.627≤DST / F≤1.332 or 0.818≤(H / 2) / (F*tan(θ / 2))≤1.173; Wherein, F is the total focal length of the optical lens, TTL is the total optical length of the optical lens, BFL is the optical back focal length of the optical lens, FOV is the maximum field of view of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, DMAX is the maximum value of the maximum aperture of all lenses in the optical lens, θ is the radian value of the maximum field of view of the optical lens, D is the maximum aperture of the first side of the first lens corresponding to the maximum field of view of the optical lens, ENPD is the entrance pupil diameter of the optical lens, and DST is the effective aperture of the optical stop of the optical lens.

4. The optical lens according to claim 1 or 2, characterized in that, The optical lens satisfies at least one of the following relationships: -11.583≤F1 / F≤-1.247 or 0.054≤|F1 / F2|≤12.962; Wherein, F is the total focal length of the optical lens, F1 is the focal length of the first lens, and F2 is the focal length of the second lens.

5. The optical lens according to claim 1 or 2, characterized in that, The optical lens satisfies at least one of the following relationships: 0.76≤|F2 / F|≤32.015 or 0.399≤|F2 / F3|≤3.908; Wherein, F is the total focal length of the optical lens, F2 is the focal length of the second lens, and F3 is the focal length of the third lens.

6. The optical lens according to claim 1 or 2, characterized in that, The optical lens satisfies at least one of the following relationships: 0.995≤F3 / F≤9.422 or 0.071≤|F3 / F4|≤4.001; Wherein, F is the total focal length of the optical lens, F3 is the focal length of the third lens, and F4 is the focal length of the fourth lens.

7. The optical lens according to claim 1 or 2, characterized in that, The optical lens satisfies at least one of the following relationships: 1.087≤|F4 / F|≤23.408, 0.944≤|F5 / F|≤10.681, 0.279≤|F4 / F9|≤10.14, 0.632≤|F4 / F5|≤8.09, 0.396≤|F5 / F6|≤4.03 or 1.137≤|(R7*R8) / F4|; Wherein, F is the total focal length of the optical lens group, F4 is the focal length of the fourth lens, F5 is the focal length of the fifth lens, F9 is the focal length of the ninth lens, F6 is the focal length of the sixth lens, R7 is the center radius of curvature of the first side of the fourth lens, and R8 is the center radius of curvature of the second side of the fourth lens.

8. The optical lens according to claim 1 or 2, characterized in that, The optical lens satisfies at least one of the following relationships: 0.841≤|F6 / F|≤3.23, 0.639≤|F7 / F|≤8.233, 1.77≤F8 / F≤4.497, 0.187≤|F6 / F7|≤2.49 or 0.307≤|F7 / F8|≤3.717; Wherein, F is the total focal length of the optical lens group, F6 is the focal length of the sixth lens, F7 is the focal length of the seventh lens, and F8 is the focal length of the eighth lens.

9. The optical lens according to claim 1 or 2, characterized in that, The optical lens satisfies at least one of the following relationships: 1.901≤F9 / F≤4.993, 0.498≤F8 / F9≤1.45, or 27.333≤|R17*R18 / F9|; Wherein, F is the total focal length of the optical lens, F9 is the focal length of the ninth lens, F8 is the focal length of the eighth lens, R17 is the central radius of curvature of the first side of the ninth lens, and R18 is the central radius of curvature of the second side of the ninth lens.

10. An electronic device, characterized in that, include: Optical lens according to any one of claims 1 to 9; as well as At least one of an imaging element and a light source; The imaging element is used to convert the optical image or optical information formed by the optical lens into an electrical signal; The light source is located on the second side of the optical lens. The light emitted by the light source is projected onto the first side of the optical lens after passing through the optical lens, and forms an image or illuminated area on the first side of the optical lens.

Images