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 and a second lens with negative focal power from a first side to a second side along an optical axis, wherein at least one of a first side surface and a second side surface of the first lens is a concave surface; at least one of the first side surface and the second side surface of the second lens is a convex surface; the third lens has focal power; the fourth lens has focal power; the fifth lens has positive focal power; wherein the number of lenses with focal power in the optical lens is five; the optical lens satisfies that d7 / TL is less than or equal to 0.035; f12 / F < = 5; f5 / F < = 4.5; 0.15 mm < = F / FOV * 1 degree < = 5mm.

Description

Technical Field

[0001] The present application relates to the field of optical elements, and more specifically, to an optical lens and an electronic device. Background Art

[0002] In recent years, with the rapid development of automobile assisted driving technology, optical lenses are used more and more widely in automobiles, such as vehicle-mounted optical lenses or projection lenses.

[0003] Projection lenses are an important part of projectors and PGUs (Picture Generation Units). At present, with the rapid development of DMD (Digital Micromirror Device) and LCOS (Liquid Crystal On Silicon) chip technology, the requirements for projection lenses are getting higher and higher. In order to meet the increasingly high performance requirements of automotive applications, automotive projection lenses are also constantly developing in the direction of small size, high resolution, long back focus, large field of view, and small telecentricity. Summary of the invention

[0004] On one hand, the present application provides an optical lens, which includes, in order from the first side to the second side along the optical axis: a first lens with negative optical power, at least one of the first side surface and the second side surface of the first lens is a concave surface; a second lens with positive optical power, at least one of the first side surface and the second side surface of the second lens is a convex surface; a third lens with optical power; a fourth lens with optical power; and a fifth lens with positive optical power; wherein the number of lenses with optical power in the optical lens is five; an air interval d7 on the optical axis between the third lens and the fourth lens and a distance TL on the optical axis from the first side surface of the first lens to the second side surface of the fifth lens satisfy: d7 / TL≤0.035; a combined focal length F12 of the first lens and the second lens and a focal length F of the optical lens satisfy: F12 / F≤5; a focal length F5 of the fifth lens and a focal length F of the optical lens satisfy: F5 / F≤4.5; the focal length F of the optical lens and a maximum field of view FOV of the optical lens satisfy: 0.15mm≤F / FOV×1°≤5mm.

[0005] In some embodiments, the first side surface of the first lens is concave, and the second side surface is concave; or the first side surface is concave, and the second side surface is flat; or the first side surface is concave, and the second side surface is convex; or the first side surface is flat, and the second side surface is concave; or the first side surface is convex, and the second side surface is concave.

[0006] In some embodiments, the first side surface of the second lens is convex, and the second side surface is convex; or its first side surface is convex, and the second side surface is flat; or its first side surface is convex, and the second side surface is concave; or its first side surface is flat, and the second side surface is convex; or its first side surface is concave, and the second side surface is convex.

[0007] In some embodiments, the third lens has positive power, and its first side surface is convex and its second side surface is convex; or its first side surface is convex and its second side surface is flat; or its first side surface is convex and its second side surface is concave; or its first side surface is flat and its second side surface is convex; or its first side surface is concave and its second side surface is convex; Alternatively, the third lens has negative optical power, and its first side surface is concave and its second side surface is concave; or its first side surface is flat and its second side surface is concave; or its first side surface is convex and its second side surface is concave.

[0008] In some embodiments, the fourth lens has positive optical power, and its first side surface is convex, and its second side surface is convex; Alternatively, the fourth lens has negative optical power, and its first side surface is concave, and the second side surface is concave; or its first side surface is concave, and the second side surface is flat; or its first side surface is concave, and the second side surface is convex; or its first side surface is flat, and the second side surface is concave; or its first side surface is convex, and the second side surface is concave.

[0009] In some embodiments, the first side surface of the fifth lens is convex, and the second side surface is convex; or its first side surface is convex, and the second side surface is flat; or its first side surface is convex, and the second side surface is concave; or its first side surface is flat, and the second side surface is convex; or its first side surface is concave, and the second side surface is convex.

[0010] In some embodiments, a maximum value Dfront of the maximum clear apertures of each optical surface of the first lens and the second lens and a maximum value Dback of the maximum clear apertures of each optical surface of the third lens, the fourth lens, and the fifth lens satisfy: Dfront / Dback≤0.9.

[0011] In some embodiments, the optical lens satisfies at least one of the following conditions: D / H / F×1mm≤0.35; TTL / F≤7.5; TTL / H / FOV×1°≤0.8; TTL / H / θ≤25; TTL / DMAX≤5; D / H / FOV×1°≤0.15; D / H / θ≤5; (F θ) / D≥0.35; wherein D is the maximum clear aperture of the first side surface of the first lens, H is the image height corresponding to the maximum field angle of the optical lens, F is the focal length of the optical lens, TTL is the total optical length of the optical lens, θ is the radian value corresponding to the maximum field angle of the optical lens, FOV is the maximum field angle of the optical lens, and DMAX is the maximum value of the maximum clear apertures of each optical surface of the first lens to the fifth lens.

[0012] In some embodiments, the optical lens satisfies at least one of the following conditions: BFL / TTL≥0.3; BFL / TL≥0.45; wherein BFL is the back focal length of the optical lens, TTL is the total optical length of the optical lens, and TL is the distance from the first side surface of the first lens to the second side surface of the fifth lens on the optical axis.

[0013] In some embodiments, the optical lens satisfies at least one of the following conditions: The optical lens satisfies at least one of the following conditions: 1≤F / H≤4; 45°≤(FOV F) / H≤95°;|(HF θ) / (F θ)|≤0.1;0.5≤(H / 2) / (F tan(θ / 2))≤1.8; wherein, F is the focal length of the optical lens, H is the image height corresponding to the maximum field angle of the optical lens, FOV is the maximum field angle of the optical lens, and θ is the radian value corresponding to the maximum field angle of the optical lens.

[0014] In some embodiments, the optical lens further includes an aperture; the optical lens satisfies at least one of the following conditions: F / ENPD≤2.8; F / ENPD / D×1mm≤0.8; DST / F≥0.35; wherein F is the focal length of the optical lens, ENPD is the entrance pupil diameter of the optical lens, D is the maximum clear aperture of the first side surface of the first lens, and DST is the aperture diameter of the aperture.

[0015] In some embodiments, the optical lens satisfies at least one of the following conditions: 0.01≤T23 / F≤3; 0.005≤T23 / TL≤1; wherein T23 is the air gap between the second lens and the third lens on the optical axis, F is the focal length of the optical lens, and TL is the distance from the first side surface of the first lens to the second side surface of the fifth lens on the optical axis.

[0016] In some embodiments, the optical lens satisfies at least one of the following conditions: 0.2≤F345 / F≤5; 0.1≤φ3-5 / φ≤3; wherein φ3-5 is the combined optical focal length of the third lens, the fourth lens, and the fifth lens, φ is the optical focal length of the optical lens, F345 is the combined focal length of the third lens, the fourth lens, and the fifth lens, and F is the focal length of the optical lens.

[0017] In some embodiments, the optical lens satisfies at least one of the following conditions: d6-10 / TL≤0.8; d6-10 / TTL≤0.5; d7 / TTL≤0.04; wherein d6-10 is the distance from the first side surface of the third lens to the second side surface of the fifth lens on the optical axis, d7 is the air gap between the third lens and the fourth lens on the optical axis, TL is the distance from the first side surface of the first lens to the second side surface of the fifth lens on the optical axis, and TTL is the total optical length of the optical lens.

[0018] In some embodiments, the optical lens satisfies at least one of the following conditions: -65≤F1 / F≤0; -50≤F1 / BFL≤-0.15; wherein F1 is the focal length of the first lens, F is the focal length of the optical lens, and BFL is the back focal length of the optical lens.

[0019] In some embodiments, the optical lens satisfies at least one of the following conditions: -5≤F1 / F2≤0; F2 / F≥1; wherein F1 is the focal length of the first lens, F2 is the focal length of the second lens, and F is the focal length of the optical lens.

[0020] In some embodiments, the focal length F1 of the first lens and the combined focal length F345 of the third lens, the fourth lens, and the fifth lens satisfy: -65≤F1 / F345≤0.

[0021] In some embodiments, the optical lens satisfies at least one of the following conditions: -5≤F / R1≤3; |F / R2|≤5; wherein F is the focal length of the optical lens, R1 is the radius of curvature of the first side surface of the first lens, and R2 is the radius of curvature of the second side surface of the first lens.

[0022] In some embodiments, the focal length F5 of the fifth lens and the curvature radius R1 of the first side surface of the first lens satisfy: -10≤F5 / R1≤3.

[0023] In some embodiments, the optical lens satisfies at least one of the following conditions: 0.3≤F3 / F≤4.5; 0.1≤|F4 / F|≤4; |max(F2, F3, F4, F5) / min(F2, F3, F4, F5)|≤280; wherein, F3 is the focal length of the third lens, F4 is the focal length of the fourth lens, F is the focal length of the optical lens, max(F2, F3, F4, F5) is the maximum focal length of the focal length of the second lens, the focal length of the third lens, the focal length of the fourth lens and the focal length of the fifth lens, and min(F2, F3, F4, F5) is the minimum focal length of the focal length of the second lens, the focal length of the third lens, the focal length of the fourth lens and the focal length of the fifth lens.

[0024] In some embodiments, the optical lens satisfies at least one of the following conditions: 0.3≤(T12+T23) / F≤2.2; (T12+T23) / BFL≤1.5; 0.05≤(T12+T23) / TL≤1; wherein T12 is the air gap between the first lens and the second lens on the optical axis, T23 is the air gap between the second lens and the third lens on the optical axis, F is the focal length of the optical lens, BFL is the back focal length of the optical lens, and TL is the distance from the first side surface of the first lens to the second side surface of the fifth lens on the optical axis.

[0025] In some embodiments, the optical lens satisfies at least one of the following conditions: 45 mm ≤ D9 BFL / H≤90mm; MD1 / MD2≤1.3; wherein, D9 is the maximum light-clearance aperture of the first side surface of the fifth lens, BFL is the back focal length of the optical lens, H is the image height corresponding to the maximum field angle of the optical lens, MD1 is the maximum light-clearance aperture of the first lens, and MD2 is the maximum light-clearance aperture of the second lens.

[0026] In some embodiments, a center thickness d3 of the second lens and a distance TL on the optical axis from the first side surface of the first lens to the second side surface of the fifth lens satisfy: d3 / TL≤0.35.

[0027] In some embodiments, the focal length F of the optical lens and the curvature radius R6 of the second side surface of the third lens satisfy: -3.5≤F / R6≤5.

[0028] In some embodiments, the optical lens satisfies at least one of the following conditions: d10 / TL≤0.3; d10 / TTL≤0.2; wherein d10 is the center thickness of the fifth lens, TL is the distance from the first side surface of the first lens to the second side surface of the fifth lens on the optical axis, and TTL is the total optical length of the optical lens.

[0029] In some embodiments, the optical lens further includes a stop; the optical lens satisfies at least one of the following conditions: 50°≤(FOV F) / H≤80°; 2.5≤TTL / F≤6; TTL / H / FOV×1°≤0.5; TTL / H / θ≤20; 2≤TTL / DMAX≤4.5; (F θ) / D≥0.5; D / H / FOV×1°≤0.1; D / H / θ≤4; D / H / F×1mm≤0.2; |(HF θ) / (F <h2 style=";text-align:left;direction:ltr">θ)|≤0.08;BFL / TTL≥0.35;BFL / TL≥0.5;1.2≤F / H≤3;F / ENP D≤2.6;F / ENPD / D×1mm≤0.5;0.4≤DST / F≤1.2;0.6≤(H / 2) / (F<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr"> tan(θ / 2))≤1.5;0.009≤T23 / TL≤0.7;0.3≤φ3-5 / φ≤1.5;d6-10 / TL≤0.65;d6-10 / TTL≤0.4;d7 / TL≤0.03;d7 / TTL≤0.02;50mm≤D9<h2 style=";text-align:left;direction:ltr"> BFL / H ≤ 85 mm; -60 ≤ F1 / F ≤ 0; -5 ≤ F1 / F ≤ 0; -50 ≤ F1 / F345 ≤ 0; |F / R2| ≤ 3; -3 ≤ F1 / F2 ≤ 0; |max(F2, F3, F4, F5) / min(F2, F3, F4, F5)| ≤ 260; 0.1 ≤ (T12 + T23) / TL ≤ 0.8; 0.35 ≤ (T12 + T23) / TL ≤ 0.7; 0.5 ≤ F345 / F ≤ 3; 1 ≤ F345 / F ≤ 2.5; F12 / F ≤ 4; F12 / F ≤ 0; MD1 / MD2 ≤ 1.2; D front / D rear ≤ 0.8; d3 / TL ≤ 0.3; 0.12 ≤ (T12 + T23) / BFL ≤ 1.2; -40 ≤ F1 / BFL ≤ -0.25; 0.6 ≤ F3 / F ≤ 3; 0.5 ≤ |F4 / F| ≤ 3; F5 / F ≤ 4; d10 / TL ≤ 0.2; d10 / TTL ≤ 0.12; 0.2 mm ≤ F / FOV × 1° ≤ 3 mm; 0.2 mm ≤ F / FOV × 1° ≤ 1.5 mm; 0.02 ≤ T23 / F ≤ 1.5; -3 ≤ F / R1 ≤ 1; -3.5 ≤ F / R1 ≤ 0; -2 ≤ F / R6 ≤ 3; 0 ≤ F / R6 ≤ 4; 0.4 ≤ (T12 + T23) / F ≤ 2.0; 0.8 ≤ (T12 + T23) / F ≤ 1.9; -9 ≤ F5 / R1 ≤ 1.5; -10≤F5 / R1≤0; where FOV is the maximum field of view of the optical lens, F is the focal length of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, TTL is the total optical length of the optical lens, θ is the arc value corresponding to the maximum field of view of the optical lens, D is the maximum clear aperture of the first side surface of the first lens, DMAX is the maximum value of the maximum clear aperture of each optical surface from the first lens to the fifth lens, BFL is the back focal length of the optical lens, TL is the distance from the first side surface of the first lens to the second side surface of the fifth lens on the optical axis, E NPD is the entrance pupil diameter of the optical lens, DST is the aperture diameter of the aperture, φ3-5 is the combined focal length of the third lens, the fourth lens and the fifth lens, φ is the focal length of the optical lens, d6-10 is the distance on the optical axis from the first side surface of the third lens to the second side surface of the fifth lens, d7 is the air interval on the optical axis between the third lens and the fourth lens, D9 is the maximum aperture of the first side surface of the fifth lens, 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, and F5 is the focal length of the fifth lens. F345 is the combined focal length of the third lens, the fourth lens and the fifth lens, F12 is the combined focal length of the first lens and the second lens, max(F2, F3, F4, F5) is the maximum focal length among the focal lengths of the second lens, the third lens, the fourth lens and the fifth lens, min(F2, F3, F4, F5) is the minimum focal length among the focal lengths of the second lens, the third lens, the fourth lens and the fifth lens, T12 is the air distance between the first lens and the second lens on the optical axis, T23 is the air distance between the second lens and the third lens The air interval of the lenses on the optical axis, MD1 is the maximum clear aperture of the first lens, MD2 is the maximum clear aperture of the second lens, Dfront is the maximum value of the maximum clear apertures of the optical surfaces of the first lens and the second lens, Dback is the maximum value of the maximum clear apertures of the optical surfaces of the third lens, the fourth lens and the fifth lens, d3 is the center thickness of the second lens, d10 is the center thickness of the fifth lens, R1 is the curvature radius of the first side surface of the first lens, R2 is the curvature radius of the second side surface of the first lens, and R6 is the curvature radius of the second side surface of the third lens.

[0030] In some embodiments, the optical lens further includes an aperture; the optical lens satisfies at least one of the following conditions: 55.985°≤(FOV F) / H≤60.769°; 3.542≤TTL / F≤5.395; 0.223≤TTL / H / FOV×1°≤0.316; 12.76≤TTL / H / θ≤18.119; 2.932≤TTL / DMAX≤4.033; 0.668≤(F θ) / D≤1.034;0.033≤D / H / FOV×1°≤0.056;1.878≤D / H / θ≤3.191;0.065≤D / H / F×1mm≤0.117;0.0003≤|(HF*θ) / (F i)|≤0.057;0.379≤BFL / TTL≤0.49;0.61≤BFL / TL≤0.962;1.561≤F / H≤2.168;1. 9≤F / ENPD≤2.5;0.176≤F / ENPD / D≤0.322;0.565≤DST / F≤0.913;0.921≤(H / 2) / (F tan(θ / 2))≤1.005;0.019≤T23 / TL≤0.493;0.49≤φ3-5 / φ≤1.195;0.222≤d6-10 / TL ≤0.569;0.133≤d6-10 / TTL≤0.3;0≤d7 / TL≤0.022;0≤d7 / TTL≤0.014;51.797mm≤D9 BFL / H ≤ 80.635 mm; -55.98 ≤ F1 / F ≤ -0.655; 1.342 ≤ F2 / F ≤ 424.829; -45.283 ≤ F1 / F345 ≤ -0.394; 0 ≤ |F / R2| ≤ 1.971; -1.239 ≤ F1 / F2 ≤ -0.087; 1.052 ≤ |max(F2, F3, F4, F5) / min(F2, F3, F4, F5)| ≤ 240.026; 0.133 ≤ (T12 + T23) / TL ≤ 0.645; 0.836 ≤ F345 / F ≤ 2.042; -88.18 ≤ F12 / F ≤ 3.211; 0.595 ≤ MD1 / MD2 ≤ 1.19; 0.48 ≤ D front / D rear ≤ 0.875; 0.003 ≤ d3 / TL ≤ 0.225; 0.184 ≤ (T12 + T23) / BFL ≤ 0.953; -36 ≤ F1 / BFL ≤ -0.337; 1.062 ≤ |F3 / F| ≤ 2.314; 0.938 ≤ |F4 / F| ≤ 2.28; 1.09 ≤ F5 / F ≤ 3.766; 0.058 ≤ d10 / TL ≤ 0.216; 0.036 ≤ d10 / TTL ≤ 0.114; 0.32 mm ≤ F / FOV × 1° ≤ 0.624 mm; 0.037 ≤ T23 / F ≤ 1.168; -2.645 ≤ F / R1 ≤ 0.649; -1.564 ≤ F / R6 ≤ 1.221; 0.448 ≤ (T12 + T23) / F ≤ 1.836; -7.98 ≤ F5 / R1 ≤ 1.104; wherein FOV is the maximum field of view of the optical lens, F is the focal length of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, TTL is the total optical length of the optical lens, θ is the arc value corresponding to the maximum field of view of the optical lens, D is the maximum clear aperture of the first side surface of the first lens, DMAX is the maximum value of the maximum clear apertures of each optical surface from the first lens to the fifth lens, BFL is the back focal length of the optical lens, TL is the distance from the first side surface of the first lens to the second side surface of the fifth lens on the optical axis, and ENPD is the distance of the optical lens from the first side surface of the first lens to the second side surface of the fifth lens. The entrance pupil diameter, DST is the aperture diameter of the aperture, φ3-5 is the combined focal length of the third lens, the fourth lens and the fifth lens, φ is the focal length of the optical lens, d6-10 is the distance on the optical axis from the first side surface of the third lens to the second side surface of the fifth lens, d7 is the air interval on the optical axis between the third lens and the fourth lens, D9 is the maximum aperture of the first side surface of the fifth lens, 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, and F34 is the focal length of the fifth lens. 5 is the combined focal length of the third lens, the fourth lens and the fifth lens, F12 is the combined focal length of the first lens and the second lens, max(F2, F3, F4, F5) is the maximum focal length among the focal lengths of the second lens, the third lens, the fourth lens and the fifth lens, min(F2, F3, F4, F5) is the minimum focal length among the focal lengths of the second lens, the third lens, the fourth lens and the fifth lens, T12 is the air spacing between the first lens and the second lens on the optical axis, T23 is the air spacing between the second lens and the third lens on the optical axis The air interval on the optical axis, MD1 is the maximum clear aperture of the first lens, MD2 is the maximum clear aperture of the second lens, Dfront is the maximum value of the maximum clear apertures of the optical surfaces of the first lens and the second lens, Dback is the maximum value of the maximum clear apertures of the optical surfaces of the third lens, the fourth lens and the fifth lens, d3 is the center thickness of the second lens, d10 is the center thickness of the fifth lens, R1 is the curvature radius of the first side surface of the first lens, R2 is the curvature radius of the second side surface of the first lens, and R6 is the curvature radius of the second side surface of the third lens.

[0031] The present application further provides an electronic device. The electronic device includes the optical lens provided by the present application, and also includes at least one of the following: an imaging element, which is used to convert an optical image or optical information formed by the optical lens into an electrical signal, the imaging element is located on the second side of the optical lens, and the light from the first side of the optical lens is imaged on the second side after passing through the optical lens; or a light source, which is located on the second side of the optical lens, and the light emitted by the light source is projected to the first side of the optical lens after passing through the optical lens, forming an image or illuminating an area on the first side.

[0032] The optical lens according to the embodiment of the present application includes five lenses with optical power, which are the first lens to the fifth lens arranged in sequence from the first side to the second side along the optical axis. The air gap d7 between the third lens and the fourth lens on the optical axis and the distance TL from the first side of the first lens to the second side of the fifth lens on the optical axis satisfy d7 / TL≤0.035. The smaller the air gap between the third lens and the fourth lens in the rear group is controlled, the smaller the diffuse large-diameter light enters the fifth lens, which is conducive to miniaturization and helps the smooth transition of light, reducing the sensitivity of the lens, thereby facilitating the processing and molding of the lens; the combined focal length F12 of the first lens and the second lens and the focal length F of the optical lens satisfy F12 / F≤5, and the optical power of the first lens is negative , the focal power of the second lens is positive, and the focal length combination of the first lens and the second lens is reasonably controlled at the position where the light beam of the field of view at the outermost end of the lens is most dispersed, which can minimize the correction pressure of the rear lens group for the large field of view aberration, thereby maximizing the correction of the rear lens group for the large field of view chief ray angle, which is beneficial to improving the resolution on the basis of achieving a long back focus; the focal length F5 of the fifth lens and the focal length F of the optical lens meet F5 / F≤4.5, and the focal power of the fifth lens is controlled to be positive, and its focal length is controlled within a reasonable range, which can ensure that the light is smoothly converged to the image plane while achieving a small CRA (Chief Ray Angle) and a long back focus; the focal length F of the optical lens and the maximum field of view FOV of the optical lens meet: 0.15mm≤F / FOV×1°≤5mm. Under a certain field of view, the large focal length of the optical system is maintained by reasonably matching the different focal powers of each lens, so that the optical system can receive the light of the large field of view while correcting the axial aberration caused by the large field of view, thereby improving the resolution.

[0033] In addition, the optical lens according to the embodiment of the present application optimizes the shape, optical focal length, thickness and spacing of each lens, so that the optical lens has at least one of the characteristics of miniaturization and high resolution (MTF value within the spatial cutoff frequency of 60lp / mm is greater than 0.4), small telecentricity (telecentricity is less than 3°), long back focus, small distortion (distortion is less than 5.5%) and a large field of view angle (greater than 20°). BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Other features, purposes and advantages of the present utility model will become more apparent through the detailed description of the following embodiments in conjunction with the accompanying drawings. In the accompanying drawings: Figures 1 to 14 The schematic diagrams of the structures of the optical lenses according to Embodiments 1 to 14 of the present application are respectively shown; Figures 15 to 27 The schematic diagrams of the structures of the optical lenses according to Embodiments 15 to 27 of the present application are respectively shown; Figures 28 to 40The schematic diagrams of the structures of the optical lenses according to Embodiments 28 to 40 of the present application are respectively shown; Figures 41 to 54 Structural schematic diagrams of optical lenses according to Examples 41 to 54 of the present application are respectively shown. DETAILED DESCRIPTION

[0035] In order to facilitate the understanding of the present application, the present application will be described more comprehensively below with reference to the relevant drawings. It should be understood that these detailed descriptions are only descriptions of exemplary embodiments of the present application, and do not limit the scope of the present application in any way. Throughout the specification, the same figure numbers refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0036] It should be noted that in this specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the features. Therefore, without departing from the teaching of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0037] In the drawings, the thickness, size and shape of the lenses have been slightly exaggerated for ease of explanation. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to the shapes of the spherical or aspherical surfaces shown in the drawings. The drawings are only examples and are not drawn strictly to scale.

[0038] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the first side is called the first side surface of the lens, the surface of each lens closest to the second side is called the second side surface of the lens, and the surface of the optical lens closest to the second side is called the second side surface of the optical lens.

[0039] It should be understood that the optical lens provided in the present application can be used for both video and projection, and can also be used as a laser radar lens. When the optical lens provided in the present application is used for a camera lens or a laser radar receiving end lens, the "first side" referred to in this article may refer to the object side, and the "second side" may refer to the image side. The light from the object side can be imaged on the image side, and the second side of the optical lens can be provided with an imaging surface. Among them, the camera lens can be, for example, a car camera, an infrared camera, a drone camera, a night vision camera, a security monitoring camera, etc. When the optical lens provided in the present application is used for a projection lens or a radar transmitting end lens, the "first side" referred to in this article may refer to the object side, and the "second side" may refer to the light source side. The second side of the optical lens may be provided with a light source, and the light source can provide light with or without image information. The light from the light source side passes through the optical lens and is projected to the target area on the first side (object side), for example, an image can be formed on the first side or an illuminated area.

[0040] It should also be understood that the terms "comprises", "including", "having", "includes" and / or "comprising", 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. In addition, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire listed features rather than modifying the individual elements in the list. In addition, when describing embodiments of the present application, "may" is used to mean "one or more embodiments of the present application". And, the term "exemplary" is intended to refer to an example or illustration.

[0041] Unless otherwise defined, all terms (including technical terms and scientific terms) used in this article have the same meaning as commonly understood by ordinary technicians in the field to which this application belongs. It should also be understood that terms (such as terms defined in commonly used dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined in this article.

[0042] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0043] The features, principles and other aspects of the present application are described in detail below.

[0044] In an exemplary embodiment, the optical lens may include, for example, five lenses having optical power, namely, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens, which are arranged in sequence from the first side to the second side along the optical axis.

[0045] In an exemplary embodiment, 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).

[0046] In an exemplary embodiment, the first lens may have a negative optical power. The first lens has a negative optical power, which plays a role in diffusing light and collects as much light of a large field of view as possible to enter the rear optical system, thereby achieving a large FOV (Field Of View).

[0047] In an exemplary embodiment, the first side surface and the second side surface of the first lens may both be concave surfaces. The first side surface of the first lens is a concave surface, which allows large-angle light to slowly transition to the second lens after entering the system, which is conducive to alleviating the correction pressure of the second lens on the aberration of large-angle light, and can achieve a small diameter and a small volume. The second side surface of the first lens is a concave surface, which plays a role in converging light to the second lens, can reduce sensitivity, and is conducive to alleviating the pressure of the rear lens group to improve the resolution.

[0048] In an exemplary embodiment, the first side surface of the first lens may be a concave surface, and the second side surface may be a plane surface. The first side surface of the first lens is a concave surface, which is conducive to receiving a large-angle light beam and achieving a small diameter and small volume. The second side surface of the first lens is a plane surface, which plays a role in transitioning light to the second lens.

[0049] In an exemplary embodiment, the first side surface of the first lens may be a concave surface, and the second side surface may be a convex surface. The first side surface of the first lens is a concave surface, which is conducive to converging the received large-angle light as much as possible in the lens and achieving a small diameter and small volume; the second side surface of the first lens is a convex surface, which plays a role in smoothly transitioning the light diverging from the first side surface to the second lens, which can reduce the field of view entering the second lens, and is conducive to reducing the pressure of the rear lens group to improve the resolution.

[0050] In an exemplary embodiment, the first side surface of the first lens may be a plane, and the second side surface may be a concave surface. The first side surface of the first lens is a plane, which plays a role of transitioning light to the second lens; the second side surface of the first lens is a concave surface, which can slightly converge the light transitioned from the first side surface to the second lens, which is conducive to the light entering the rear group smoothly and improving the resolution.

[0051] In an exemplary embodiment, the first side surface of the first lens may be a convex surface, and the second side surface may be a concave surface. The first side surface of the first lens is a convex surface, which is conducive to converging light to achieve a large field of view, and the convex surface is close to the object plane to play a role in dust and water resistance. The second side surface of the first lens is a concave surface, which plays a role in converging light to the second lens, which can reduce the field of view entering the second lens, and is conducive to reducing the pressure of the rear lens group to improve the resolution.

[0052] In an exemplary embodiment, the second lens may have positive refractive power. The second lens has a positive refractive power and plays a role in converging light. It can cooperate with the first lens to converge and compress the divergent large field of view light to the rear group, thereby achieving a large field of view while improving edge resolution.

[0053] In an exemplary embodiment, the first side surface of the second lens may be a concave surface, and the second side surface may be a convex surface. The first side surface of the second lens is a concave surface, which slightly diffuses the light converged by the front group to the rear group, and realizes a small diameter and a small volume. The second side surface of the second lens is a convex surface, which smoothly transitions the converged light to the third lens, and can slightly correct the field of view aberration caused by the first lens, relieving the resolution pressure of the subsequent lens. In addition, the concave and convex shape of the second lens makes the light of the front and rear groups smooth (that is, the light transition from the second lens to the third lens is smooth), which is conducive to reducing the sensitivity of the system.

[0054] In an exemplary embodiment, the first side surface of the second lens may be a convex surface, and the second side surface may be a convex surface. The first side surface of the second lens is a convex surface, which plays a role in converging the light incident on the first lens, and at the same time can slightly reduce the field of view aberration caused by the large-angle light emitted by the first lens. The second side surface of the second lens is a convex surface, which plays a role in smoothly transitioning the light converged by the first side surface of the second lens to the third lens, thereby reducing the sensitivity of the system.

[0055] In an exemplary embodiment, the first side surface of the second lens may be a convex surface, and the second side surface may be a plane surface. The first side surface of the second lens is a convex surface, which plays a role in converging the light incident on the first lens, and at the same time can slightly reduce the field of view aberration caused by the large-angle light emitted by the first lens. The second side surface of the second lens is a plane surface, which plays a role in transitioning the light to the third lens.

[0056] In an exemplary embodiment, the first side surface of the second lens may be a plane, and the second side surface may be a convex surface. The first side surface of the second lens is a plane, which plays a role in transitioning light to the second side surface of the second lens. The second side surface of the second lens is a convex surface, which can smoothly transition the light transmitted through the first side surface of the second lens to the third lens, and at the same time can relieve the correction pressure of the third lens on spherical aberration and coma.

[0057] In an exemplary embodiment, the first side surface of the second lens may be a convex surface, and the second side surface may be a concave surface. The first side surface of the second lens is a convex surface, which plays a role in converging the light incident on the first lens, and at the same time plays a role in correcting the axial aberration of the light incident at a large angle. The second side surface of the second lens is a concave surface, which can converge the light converged by the first side surface of the second lens to the third lens again, greatly reducing the field of view of the light entering the third lens, reducing the axial aberration caused by the large field of view, and helping to reduce the pressure of the rear lens group to improve the resolution. In addition, the convex and concave shape of the second lens makes the front and rear groups of light smooth (that is, the light transition from the second lens to the third lens is smooth), which helps to reduce the sensitivity of the system.

[0058] In an exemplary embodiment, the third lens may have a negative optical power. The negative optical power of the third lens is conducive to proper diffusion of light, making the light trend more stable and helping to lengthen the back focus.

[0059] In an exemplary embodiment, the first side surface and the second side surface of the third lens can both be concave surfaces. The first side surface of the third lens has a meniscus shape concave toward the first side, and the first side surface is a concave surface, which can make the light transition smoothly, and at the same time can smooth the spherical aberration and vertical axis chromatic aberration caused by the first lens and the second lens; the second side surface of the third lens is a concave surface, which can disperse the light diverged from the first side surface of the third lens to the fourth lens again, play a role in smoothing the transition of light, reduce system sensitivity, and reduce the correction pressure of the rear lens group for axial chromatic aberration.

[0060] In an exemplary embodiment, the first side surface of the third lens may be a plane, and the second side surface may be a concave surface. The first side surface of the third lens is a plane, which plays a role in transitioning light to the second side surface of the third lens. The second side surface of the third lens is a concave surface, which plays a role in diverging the light transitioned from the first side surface of the third lens to the fourth lens, which can make the light trend more stable, reduce the system sensitivity, and facilitate the realization of a long back focus.

[0061] In an exemplary embodiment, the first side surface of the third lens may be a convex surface, and the second side surface may be a concave surface. The first side surface of the third lens is a convex surface, which plays a role in converging the light incident from the second lens, and at the same time plays a role in correcting the axial aberration of the light incident at a large angle. The second side surface of the third lens is a concave surface, which can diverge the light converged by the first side surface of the third lens to the fourth lens, making the light trend more stable, reducing the system sensitivity, and effectively correcting the axial aberration formed by the first lens and the second lens. In addition, the convex-concave shape of the third lens is set to make the front and rear groups of light stable (that is, the light transition from the third lens to the fourth lens is smooth), which is conducive to reducing the sensitivity of the system.

[0062] In an exemplary embodiment, the third lens may have positive refractive power. The positive refractive power of the third lens is conducive to converging the light emitted by the first lens and the second lens, and can reduce the field angle of the light entering the rear lens group, thereby helping to correct the field aberration.

[0063] In an exemplary embodiment, the first side surface and the second side surface of the third lens can both be convex surfaces. The first side surface of the third lens is a convex surface, which plays a role in converging the light incident from the second lens, reducing the field angle of the incident light and correcting the axial aberration of the incident light at a large angle. The second side surface of the third lens is a convex surface, which can converge the light converged by the first side surface of the third lens again and emit it to the fourth lens, greatly reducing the field angle of the incident light of the front group, correcting the axial aberration to improve the resolution, and reducing the correction pressure of the rear group lens on the axial aberration.

[0064] In an exemplary embodiment, the first side surface of the third lens may be a plane, and the second side surface may be a convex surface. The first side surface of the third lens is a plane, which plays a role in transitioning light to the second side surface of the third lens. The second side surface of the third lens is a convex surface, which can converge the light transitioned from the first side surface of the third lens to the fourth lens, playing a role in reducing the angle of the light emitted from the second lens, and has a certain correction ability for field aberration.

[0065] In an exemplary embodiment, the first side surface of the third lens may be a concave surface, and the second side surface may be a convex surface. The first side surface of the third lens is a concave surface, which can diverge the light emitted from the second lens to the second side surface of the third lens, slow down the light trend, and reduce the system sensitivity. The second side surface of the third lens is a convex surface, which converges the light diverged from the first side surface of the third lens to the fourth lens, and can make the light trend smooth, reduce the deflection burden of the rear group, and offset the different-sign aberration caused by the front lens group. In addition, the convex-concave shape of the third lens can make the front and rear groups of light smooth (that is, the light transition from the third lens to the fourth lens is smooth), which is conducive to reducing the system sensitivity.

[0066] In an exemplary embodiment, the first side surface of the third lens may be a convex surface, and the second side surface may be a plane surface. The first side surface of the third lens is a convex surface, which plays a role in converging the light incident from the second lens, and can share the correction pressure of the rear lens group for the field aberration. The second side surface of the third lens is a plane surface, which plays a role in transitioning the light to the fourth lens.

[0067] In an exemplary embodiment, the first side surface of the third lens may be a convex surface, and the second side surface may be a concave surface. The first side surface of the third lens is a convex surface, which converges the light emitted by the second lens and reduces the axial aberration of the light with a large field of view. The second side surface of the third lens is a concave surface, which diverges the light converged from the first side surface of the third lens to the fourth lens, and smoothly transitions the light trend. When used with the rear lens group, spherical aberration and axial aberration can be combined to correct, thereby reducing the aberration correction pressure of the rear lens group.

[0068] In an exemplary embodiment, the fourth lens may have positive power, and its first side surface and second side surface may be convex. The fourth lens has a positive power, which is conducive to converging the light emitted by the third lens. When the power of the third lens is negative, it is helpful to correct the field aberration when it is matched with the third lens. The first side surface and the second side surface of the fourth lens are both convex, which can enhance the converging effect, make the trend of the rear group of light flat, and help to achieve a small CRA.

[0069] In an exemplary embodiment, the fourth lens may have a negative optical power. When the optical power of the third lens is positive, the optical power of the fourth lens is negative, which can significantly correct axial chromatic aberration and smoothly transition the light to the fifth lens, reducing the pressure of the fifth lens converging the light and making the light trend smooth, thereby helping to achieve a long back focus and improve resolution.

[0070] In an exemplary embodiment, the first side surface of the fourth lens may be a concave surface, and the second side surface may be a convex surface. The first side surface of the fourth lens has a meniscus shape concave toward the first side, and the first side surface is a concave surface, which can make the light transition smoothly and correct the vertical axis chromatic aberration of the system; the second side surface of the fourth lens is a convex surface, which can converge the light to the fifth lens, greatly reducing the field of view of the light, and can reduce the correction pressure of the fifth lens for the field aberration, and at the same time is conducive to achieving a small CRA and a long back focus.

[0071] In an exemplary embodiment, the first side surface of the fourth lens may be a concave surface, and the second side surface may be a plane surface. The first side surface of the fourth lens is a concave surface, which allows the light to transition smoothly, and can be used with the positive power of the third lens to correct the vertical axis chromatic aberration of the system. The second side surface of the fourth lens is a plane surface, which plays a role in transitioning the light to the fifth lens.

[0072] In an exemplary embodiment, the first side surface of the fourth lens may be a concave surface, and the second side surface may be a concave surface. The first side surface of the fourth lens has a meniscus shape concave toward the first side, and the first side surface is a concave surface, which can make the light trend transition smoothly and correct the vertical axis chromatic aberration of the system; the second side surface of the fourth lens is a concave surface, which can further diverge the light diverged from the first side surface of the fourth lens to the fifth lens, so that the light trend transitions smoothly, and can be combined with the rear lens group to correct spherical aberration and axial aberration.

[0073] In an exemplary embodiment, the first side surface of the fourth lens may be a plane, and the second side surface may be a concave surface. The first side surface of the fourth lens is a plane, which serves to transition the light to the second side surface of the fourth lens. The second side surface of the fourth lens is a concave surface, which diverges the light converged by the third lens to the fifth lens, and can correct the axial aberration by collocation with the positive and negative optical power of the third lens, so that the light trend transitions smoothly, and can be combined with the rear lens group to correct spherical aberration and axial aberration.

[0074] In an exemplary embodiment, the first side surface of the fourth lens may be a convex surface, and the second side surface may be a concave surface. The first side surface of the fourth lens is a convex surface, which converges the light emitted by the third lens and reduces the axial aberration of the light with a large field of view. The second side surface of the fourth lens is a concave surface, which diverges the light converged by the first side surface of the fourth lens to the fifth lens, and smoothly transitions the light trend. When used with the rear lens group, spherical aberration and axial aberration can be combined to improve the resolution.

[0075] In an exemplary embodiment, the fifth lens may have positive refractive power. The fifth lens has positive refractive power, receives and converges the light emitted by the fourth lens, and makes the light smoothly transition to the image plane, which is beneficial to improving the resolution.

[0076] In an exemplary embodiment, the first side surface of the fifth lens may be a convex surface, and the second side surface may be a concave surface. The first side surface of the fifth lens is a convex surface, which further converges the light emitted by the fourth lens, makes the light transition smoothly, and assists the fourth lens to jointly achieve a small CRA. The second side surface of the fifth lens is a concave surface, which is conducive to making the light transition smoothly.

[0077] In an exemplary embodiment, the first side surface of the fifth lens may be a convex surface, and the second side surface may be a convex surface. The first side surface of the fifth lens is a convex surface, which converges the light emitted by the fourth lens, makes the light transition smoothly, and assists the fourth lens to jointly achieve a small CRA. The second side surface of the fifth lens is a convex surface, which further converges the light and corrects the large field of view aberration, improves the resolution, and achieves a long back focus.

[0078] In an exemplary embodiment, the first side surface of the fifth lens may be a plane, and the second side surface may be a convex surface. The first side surface of the fifth lens is a plane, which serves to transfer light to the second side surface of the fifth lens. The second side surface of the fifth lens is a convex surface, which further converges light and corrects large field aberrations, improves resolution, and achieves a long back focus.

[0079] In an exemplary embodiment, the first side surface of the fifth lens may be a concave surface, and the second side surface may be a convex surface. The first side surface of the fifth lens has a meniscus shape concave toward the first side, and the first side surface is a concave surface, which can make the light transition smoothly to the second side surface of the fifth lens, offsetting the aberration of the opposite sign caused by the front lens group. The second side surface of the fifth lens is a convex surface, which converges the light diverging from the first side surface of the fifth lens to the image plane, realizes a small CRA, and realizes a long back focus.

[0080] In an exemplary embodiment, the first side surface of the fifth lens may be a convex surface, and the second side surface may be a plane surface. The first side surface of the fifth lens is a convex surface, which converges the light emitted by the fourth lens, makes the light transition smoothly, and assists the fourth lens to jointly achieve a small CRA. The second side surface of the fifth lens is a plane surface, which plays a role in making the light transition smoothly to the image plane.

[0081] In an exemplary embodiment, an aperture may be provided in the optical lens. For example, the aperture may be provided between the second lens and the third lens, or between the first lens and the second lens, which is beneficial for effectively converging the light entering the optical lens, reducing the lens aperture at the rear end of the optical system, and reducing the assembly sensitivity of the system. However, it should be noted that the position of the aperture disclosed herein is only an example and not a limitation; in alternative embodiments, the aperture may also be provided at other positions according to actual needs.

[0082] In an exemplary embodiment, the optical lens according to the present application may satisfy: d7 / TL≤0.035, wherein d7 is the air gap between the third lens and the fourth lens on the optical axis, and TL is the distance from the first side of the first lens to the second side of the fifth lens on the optical axis. When d7 / TL≤0.035 is satisfied, the air gap between the third lens and the fourth lens of the rear group is controlled to be smaller, so that the diffuse large-aperture light is smaller when entering the fifth lens, which is conducive to miniaturization. More specifically, the optical lens may further satisfy d7 / TL≤0.03, which is conducive to further miniaturization.

[0083] In an exemplary embodiment, the optical lens according to the present application may satisfy: F12 / F≤5, wherein F12 is the combined focal length of the first lens and the second lens, and F is the focal length of the optical lens. Satisfying F12 / F≤5, on the basis that the optical power of the first lens is negative and the optical power of the second lens is positive, the focal length combination of the first lens and the second lens is reasonably controlled at the position where the field of view light beam is most dispersed at the outermost end of the lens, which can minimize the correction pressure of the rear lens group for large field of view aberrations, thereby maximizing the correction of the rear lens group for the angle of the main ray of the large field of view, which is conducive to improving the resolution on the basis of achieving a long back focus. More specifically, the optical lens may further satisfy F12 / F≤4. Satisfying the above conditional formula can further reduce the correction pressure of the rear lens group for large field of view aberrations, which is conducive to further improving the resolution on the basis of achieving a long back focus. Furthermore, the optical lens may satisfy F12 / F≤0, which is conducive to further reducing the correction pressure of the rear lens group for large field of view aberrations, and further improving the resolution on the basis of achieving a long back focus.

[0084] In an exemplary embodiment, the optical lens according to the present application may satisfy: F5 / F≤4.5, where F5 is the focal length of the fifth lens. When F5 / F≤4.5 is satisfied, the optical power of the fifth lens is positive, and its focal length is controlled within a reasonable range, which can ensure that light is smoothly converged to the image plane while achieving a small CRA and a long back focus. More specifically, the optical lens may further satisfy F5 / F≤4, which is conducive to further achieving a small CRA and a long back focus.

[0085] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.15mm≤F / FOV×1°≤5mm, where FOV is the maximum field of view of the optical lens. Satisfying 0.15mm≤F / FOV×1°≤5mm, under a certain field of view, the large focal length of the optical system is maintained by the reasonable combination of different optical focal lengths of each lens, so that the optical system can receive the light of the large field of view while being able to correct the axial aberration caused by the large field of view, thereby improving the resolution. Among them, the value of F / FOV×1° can be 1mm, 2mm, 3mm, 4mm, 5mm, etc. More specifically, the optical lens can further satisfy 0.2mm≤F / FOV×1°≤3mm, which is conducive to further improving the resolution. Furthermore, the optical lens can satisfy 0.2mm≤F / FOV×1°≤1.5mm, maintain the large focal length of the optical system, so that the optical system can better receive the light of the large field of view while being able to correct the axial aberration caused by the large field of view, thereby improving the resolution.

[0086] In an exemplary embodiment, the optical lens according to the present application may satisfy: 45°≤(FOV F) / H≤90°, where H is the image height corresponding to the maximum field of view of the optical lens. F) / H≤90°, which is conducive to meeting the requirements of large field of view and telephoto, thus helping to improve the center resolution of the lens. More specifically, the optical lens can further meet the requirements of 50°≤(FOV F) / H≤80°, which is conducive to further satisfying the large field of view and telephoto, and improving the center resolution of the lens.

[0087] In an exemplary embodiment, the optical lens according to the present application may satisfy: TTL / F≤7.5, where TTL is the total optical length of the optical lens, that is, the distance from the first side surface of the first lens to the imaging surface (or image source surface) of the optical lens on the optical axis. When TTL / F≤7.5 is satisfied, the total optical length at a certain focal length is short, which is conducive to miniaturization. More specifically, the optical lens may further satisfy 2.5≤TTL / F≤6, which is conducive to further miniaturization.

[0088] In an exemplary embodiment, the optical lens according to the present application may satisfy: TTL / H / FOV×1°≤0.8. When this condition is satisfied, the TTL is shorter at the same field of view, which is conducive to miniaturization of the lens. Furthermore, the optical lens may satisfy TTL / H / FOV×1°≤0.5, which is conducive to further miniaturization of the lens.

[0089] In an exemplary embodiment, the optical lens according to the present application may satisfy: TTL / H / θ≤25, where θ is the arc value corresponding to the maximum field angle of the optical lens. When this condition is satisfied, the TTL is shorter under the same image plane, which is conducive to miniaturization of the lens. Furthermore, the optical lens may satisfy TTL / H / θ≤20, which is conducive to further miniaturization of the lens.

[0090] In an exemplary embodiment, the optical lens according to the present application may satisfy: TTL / DMAX≤5, where DMAX is the maximum value of the maximum aperture of each optical surface of the first lens to the fifth lens. Satisfying this conditional expression can make the total length of the system relatively short, which is conducive to miniaturization of the lens. Furthermore, the optical lens may satisfy 2≤TTL / DMAX≤4.5, which is conducive to further miniaturization of the lens.

[0091] In an exemplary embodiment, the optical lens according to the present application may satisfy: (F θ) / D≥0.35, where D is the maximum aperture of the first side of the first lens. When this condition is met, at a certain field of view, the aperture is small, which is conducive to miniaturization of the lens. Furthermore, the optical lens can meet (F*θ) / D≥0.5, which is conducive to further miniaturization of the lens.

[0092] In an exemplary embodiment, the optical lens according to the present application may satisfy: D / H / FOV×1°≤0.15. When this condition is satisfied, at a certain image height, the aperture is small, which is conducive to miniaturization of the lens. Furthermore, the optical lens may satisfy D / H / FOV×1°≤0.1, which is conducive to further miniaturization of the lens.

[0093] In an exemplary embodiment, the optical lens according to the present application may satisfy: D / H / θ≤5. When this condition is satisfied, at a certain image height, the aperture is small, which is conducive to miniaturization of the lens. Furthermore, the optical lens may satisfy D / H / θ≤4, which is conducive to further miniaturization of the lens.

[0094] In an exemplary embodiment, the optical lens according to the present application may satisfy: D / H / F×1mm≤0.35. When this condition is satisfied, at a certain field angle and focal length, the aperture is small, which is conducive to miniaturization of the lens. Furthermore, the optical lens may satisfy D / H / F×1mm≤0.2, which is conducive to further miniaturization of the lens.

[0095] In an exemplary embodiment, the optical lens according to the present application may satisfy: |(HF θ) / (F θ)|≤0.1. If this condition is met, under a certain field of view, by reasonably controlling the focal length, the optical system can improve the correction ability of the main light of the large field of view, and at the same time improve the balance ability of the main light magnification of the edge field of view and the center field of view, which is conducive to achieving small distortion. Furthermore, the optical lens can meet |(HF θ) / (F θ)|≤0.08, which is conducive to further achieving small distortion.

[0096] In an exemplary embodiment, the optical lens according to the present application may satisfy: BFL / TTL≥0.3, where BFL is the back focus length of the optical lens, that is, the distance from the second side surface of the fifth lens to the imaging surface (or image source surface) of the optical lens on the optical axis. Satisfying this conditional formula is helpful to achieve a long back focus effect, leaving enough space for adding optical devices such as prisms, and facilitating processing and assembly. Furthermore, the optical lens may satisfy BFL / TTL≥0.35, which is conducive to further achieving a long back focus.

[0097] In an exemplary embodiment, the optical lens according to the present application may satisfy: BFL / TL≥0.45. Satisfying this conditional expression helps to achieve a long back focus effect, leaving enough space for adding optical devices such as prisms, and facilitating processing and assembly. Furthermore, the optical lens may satisfy BFL / TL≥0.5, which is conducive to further achieving a long back focus.

[0098] In an exemplary embodiment, the optical lens according to the present application may satisfy: 1≤F / H≤4. Satisfying this conditional expression helps improve the resolution by controlling the focal length and image height within a certain range. Furthermore, the optical lens may satisfy 1.2≤F / H≤3, which helps further improve the resolution.

[0099] In an exemplary embodiment, the optical lens according to the present application may satisfy: F / ENPD≤2.8, where ENPD is the entrance pupil diameter of the optical lens. Satisfying this conditional expression is conducive to achieving a small FNO, while also facilitating an increase in light throughput and helping to improve relative illumination. Furthermore, the optical lens may satisfy F / ENPD≤2.6, which is conducive to further achieving a high light throughput.

[0100] In an exemplary embodiment, the optical lens according to the present application may satisfy: F / ENPD / D×1mm≤0.8. Satisfying this conditional expression is conducive to achieving a small FNO, while also facilitating an increase in light throughput and helping to improve relative illumination. Furthermore, the optical lens may satisfy F / ENPD / D×1mm≤0.5, which is conducive to further achieving a high light throughput.

[0101] In an exemplary embodiment, the optical lens according to the present application may satisfy: DST / F≥0.35, where DST is the aperture diameter of the aperture in the optical lens. When this condition is satisfied, the ratio of the aperture diameter to the effective focal length of the lens is controlled to be large, which is conducive to the lens realizing a large aperture characteristic. Furthermore, the optical lens may satisfy 0.4≤DST / F≤1.2, which is conducive to further realizing a large aperture characteristic.

[0102] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.5≤(H / 2) / (F tan(θ / 2))≤1.8. If this condition is met, the focal length can be reasonably controlled under a certain field of view, which can improve the correction ability of the optical system for the main light of a large field of view, and at the same time improve the balance ability of the main light magnification of the edge field of view and the center field of view, which is conducive to achieving small distortion. Furthermore, the optical lens can meet 0.6≤(H / 2) / (F tan(θ / 2))≤1.5, which is conducive to further achieving small distortion.

[0103] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.005≤T23 / TL≤1, where T23 is the air gap between the second lens and the third lens on the optical axis. When this condition is satisfied, the larger the air gap between the aperture and the first side surface of the third lens, the larger the aperture of the light entering the rear, which is beneficial to the rear system to correct aberrations and reduce system sensitivity. Furthermore, the optical lens may satisfy 0.009≤T23 / TL≤0.7, which is beneficial to further reduce system sensitivity.

[0104] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.1≤φ3-5 / φ≤3, wherein φ3-5 is the combined focal length of the third lens, the fourth lens, and the fifth lens, and φ is the focal length of the optical lens. Satisfying this conditional formula, by reasonably allocating the focal length of the rear group, it is beneficial to make the focal length of the rear group longer while maintaining miniaturization, and to achieve a long back focus characteristic. Furthermore, the optical lens may satisfy 0.3≤φ3-5 / φ≤1.5, which is beneficial to further reasonably allocate the focal length of the rear group, make the focal length of the rear group longer while maintaining miniaturization, and further achieve a long back focus characteristic.

[0105] In an exemplary embodiment, the optical lens according to the present application may satisfy: d6-10 / TL≤0.8, where d6-10 is the distance between the first side surface of the third lens and the second side surface of the fifth lens on the optical axis. By satisfying this conditional formula, by controlling the distance between the first side surface of the third lens and the second side surface of the fifth lens to be smaller, it is beneficial to achieve miniaturization of the lens. Furthermore, the optical lens may satisfy d6-10 / TL≤0.65, which is beneficial to further achieve miniaturization of the lens.

[0106] In an exemplary embodiment, the optical lens according to the present application may satisfy: d6-10 / TTL≤0.5. When this condition is satisfied, the distance between the first side surface of the third lens and the second side surface of the fifth lens is controlled to be smaller, which is conducive to miniaturization of the lens. Furthermore, the optical lens may satisfy d6-10 / TTL≤0.4, which is conducive to further miniaturization of the lens.

[0107] In an exemplary embodiment, the optical lens according to the present application may satisfy: d7 / TTL≤0.04, where d7 is the air gap between the third lens and the fourth lens on the optical axis. When this condition is satisfied, the air gap of the rear lens group is controlled to be smaller, so that the angle of the diffused large-aperture light entering the fifth lens is smaller, which is conducive to miniaturization of the lens. Furthermore, the optical lens may satisfy d7 / TTL≤0.02, which is conducive to further miniaturization of the lens.

[0108] In an exemplary embodiment, the optical lens according to the present application may satisfy: 45mm≤D9 BFL / H≤90mm, where D9 is the maximum aperture of the first side of the fifth lens. The larger the aperture of the first side of the fifth lens, the smaller the aperture aberration can be, and the light correction of different regions can be more precise. Meeting this conditional formula is conducive to correcting the incident angle of the edge field of view of the light emitted by the fifth lens to the image plane, which is conducive to achieving a small CRA. Furthermore, the optical lens can meet 50mm≤D9 BFL / H≤85mm, which is conducive to further correcting the incident angle of the edge field of view of the light emitted by the fifth lens to the image plane, thereby achieving a smaller CRA.

[0109] In an exemplary embodiment, the optical lens according to the present application may satisfy: -65≤F1 / F≤0, wherein F1 is the focal length of the first lens, and F is the focal length of the optical lens. By satisfying this conditional formula, the focal length of the first lens is controlled to be smaller, so that the first lens has a stronger ability to receive light with a large viewing angle, and thus there is no need to use a large-aperture lens, which is conducive to miniaturization. Furthermore, the optical lens may satisfy -60≤F1 / F≤0, which is conducive to further miniaturization. More specifically, the optical lens may satisfy -5≤F1 / F≤0, and the focal length of the first lens is controlled to be smaller, which can further enhance the ability of the first lens to receive light with a large viewing angle, thereby being more conducive to miniaturization of the lens.

[0110] In an exemplary embodiment, the optical lens according to the present application may satisfy: F2 / F≥1, where F2 is the focal length of the second lens. This conditional formula is satisfied, and by reasonably allocating the focal length of the second lens, when the first lens has a negative focal power and diverges the light, the second lens is a positive lens with a smaller focal length, which has a stronger ability to converge light, and can smoothly transmit the light to the rear group, and can reduce the large field of view light entering the rear group, thereby reducing the large field of view aberration and improving the resolution.

[0111] In an exemplary embodiment, the optical lens according to the present application may satisfy: -65≤F1 / F345≤0, wherein F345 is the combined focal length of the third lens, the fourth lens, and the fifth lens. This conditional expression is satisfied, and by reasonably controlling the ratio of the combined focal lengths of the first lens and the rear lens group, the first lens receives and compresses light with a large field of view, which is beneficial to ensuring that the sensitivity of the first lens is appropriate. If the focal length of the first lens is too large, it is not conducive to receiving light with a large field of view. If the focal length is too small, the sensitivity is high, which is not conducive to resolution. At the same time, it is beneficial for the rear lens group to correct and reduce chromatic aberration, correct telecentricity, and improve resolution. Furthermore, the optical lens may satisfy -50≤F1 / F345≤0, which is beneficial to further enable the first lens to receive light with a large field of view, and is beneficial for the rear lens group to further compress the light, correct telecentricity, and improve resolution.

[0112] In an exemplary embodiment, the optical lens according to the present application may satisfy: |F / R2|≤5, where R2 is the radius of curvature of the second side of the first lens. By satisfying the conditional formula and rationally controlling the curvature of the second side of the first lens, the angle of divergence of the large field of view light received by the first lens to the second lens can be reduced, and the field of view angle can be further reduced to make it smoothly transition to the rear, reducing the degree of light deflection in the system, thereby reducing the sensitivity of the system. Furthermore, the optical lens may satisfy |F / R2|≤3, which is conducive to further reducing the sensitivity of the system.

[0113] In an exemplary embodiment, the optical lens according to the present application can satisfy: -5≤F1 / F2≤0. Satisfying the conditional formula, controlling the first lens to have a smaller focal length, enhancing the system's ability to receive light with a large field of view, and combining with the weak light focal length of the second lens can slow down the degree of light deflection in the system, achieve a long back focus, and correct the aperture aberration caused by the large field of view to improve the resolution. Furthermore, the optical lens can satisfy -3≤F1 / F2≤0, which is conducive to further improving the resolution and achieving a long back focus.

[0114] In an exemplary embodiment, the optical lens according to the present application may satisfy: |max(F2, F3, F4, F5) / min(F2, F3, F4, F5)|≤280, wherein max(F2, F3, F4, F5) is the maximum focal length of the focal length of the second lens, the focal length of the third lens, the focal length of the fourth lens, and the focal length of the fifth lens, and min(F2, F3, F4, F5) is the minimum focal length of the focal length of the second lens, the focal length of the third lens, the focal length of the fourth lens, and the focal length of the fifth lens. By satisfying this conditional formula, the light trend can be made smoother through the reasonable allocation of the focal lengths of the front and rear lens groups, and the deflection degree of the front and rear light groups can be made closer, thereby improving the resolution. Furthermore, the optical lens may satisfy |max(F2, F3, F4, F5) / min(F2, F3, F4, F5)|≤260, which is conducive to further improving the resolution.

[0115] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.05≤(T12+T23) / TL≤1, wherein T12 is the air interval between the first lens and the second lens on the optical axis, and T23 is the air interval between the second lens and the third lens on the optical axis. Satisfying this conditional formula is conducive to controlling the larger total spacing distance between the first lens and the second lens, and between the second lens and the third lens after the large field of view light enters the first lens, so that the light has a longer transition zone in the system, and the step-by-step transition forms a gentle light trend, which helps to improve the resolution. Further, the optical lens may satisfy 0.1≤(T12+T23) / TL≤0.8, which is conducive to further forming a gentle light trend and improving the resolution. More specifically, the optical lens may satisfy 0.35≤(T12+T23) / TL≤0.7, keeping the total spacing between the first lens and the second lens and the second lens and the third lens large, so that the divergence trend of the light is elongated, which is more conducive to achieving the telephoto characteristics after the rear lens converges, and the resolution can be further improved.

[0116] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.2≤F345 / F≤5. By satisfying this conditional formula, by reasonably controlling the combined focal length of the third lens, the fourth lens, and the fifth lens, the axial aberration caused by the front large field of view light can be effectively corrected, and at the same time, it is beneficial to achieve long back focus and small telecentricity. Furthermore, the optical lens may satisfy 0.5≤F345 / F≤3, which is beneficial to correct aperture aberrations while maintaining long back focus and small telecentricity. More specifically, the optical lens may satisfy 1≤F345 / F≤2.5, which is more conducive to achieving a long back focus characteristic, and at the same time, it is beneficial to correct the axial aberration caused by the front large field of view light.

[0117] In an exemplary embodiment, the optical lens according to the present application may satisfy: MD1 / MD2≤1.3, wherein MD1 is the maximum aperture of the first lens, and MD2 is the maximum aperture of the second lens. To satisfy this conditional formula, the aperture of the first lens is controlled to be smaller than the aperture of the second lens, so that the first lens bears a greater optical power than the second lens, so that the front first lens can receive light of a larger field of view, and the field of view aberration can be corrected by the large difference in optical power between the first lens and the second lens, thereby achieving high resolution. Furthermore, the optical lens may satisfy MD1 / MD2≤1.2, which is conducive to further achieving high resolution.

[0118] In an exemplary embodiment, the optical lens according to the present application may satisfy: Dfront / Dback≤0.9, wherein Dfront is the maximum value of the maximum aperture of each optical surface of the first lens and the second lens, and Dback is the maximum value of the maximum aperture of each optical surface of the third lens, the fourth lens, and the fifth lens. When this condition is satisfied, after receiving the light of a large field of view, the front group of small-diameter lenses slows down the degree of light refraction, preliminarily corrects the field of view aberration, and then further corrects the aperture aberration and compensates for the chromatic aberration through the rear group of large-diameter lenses, thereby improving the resolution. Furthermore, the optical lens may satisfy Dfront / Dback≤0.8, which is conducive to further achieving high resolution.

[0119] In an exemplary embodiment, the optical lens according to the present application may satisfy: d3 / TL≤0.35, where d3 is the center thickness of the second lens. This conditional expression is satisfied, the center thickness of the second lens is kept small, and while miniaturization is ensured, the optical path of the light in the second lens can be reduced, and the large field of view light diverged from the first lens to the second lens is smoothly transitioned to the rear group, achieving low sensitivity of the system. Furthermore, the optical lens may satisfy d3 / TL≤0.3, which is conducive to further achieving low sensitivity of the system.

[0120] In an exemplary embodiment, the optical lens according to the present application may satisfy: (T12+T23) / BFL≤1.5. Satisfying this conditional expression is conducive to controlling the larger total spacing distance between the first lens and the second lens, and between the second lens and the third lens, making the light trend more gentle, the degree of deflection of the front and rear groups of light closer, and reducing the system sensitivity. Furthermore, the optical lens may satisfy 0.12≤(T12+T23) / BFL≤1.2, which is conducive to further reducing the system sensitivity.

[0121] In an exemplary embodiment, the optical lens according to the present application may satisfy: -50≤F1 / BFL≤-0.15. This conditional expression is satisfied, and the focal length of the first lens is reasonably controlled so that it can bear a larger optical power of the system and better correct the field aberration, while reducing the correction pressure of the rear group lens for the aberration, so that the rear group can better correct the large field light, ensuring high resolution while achieving long back focus. Furthermore, the optical lens may satisfy -40≤F1 / BFL≤-0.25, which is conducive to further ensuring high resolution while achieving long back focus.

[0122] In an exemplary embodiment, the optical lens according to the present application can satisfy: 0.3≤F3 / F≤4.5, where F3 is the focal length of the third lens. This conditional expression is satisfied, the focal length of the third lens is reasonably controlled, and the third lens and the fourth lens form a positive and negative focal power combination. In addition, the huge difference in refractive index and Abbe number can be used to increase the dispersion difference of light of different wavelengths inside the lens and after passing through the lens, thereby achieving small chromatic aberration and improving resolution. Furthermore, the optical lens can satisfy 0.6≤F3 / F≤3, which is conducive to further achieving small chromatic aberration and improving resolution.

[0123] In an exemplary embodiment, the optical lens according to the present application can satisfy: 0.1≤|F4 / F|≤4, where F4 is the focal length of the fourth lens. By satisfying this conditional expression, the focal length of the fourth lens is reasonably controlled to form a positive and negative focal power combination with the third lens. In addition, by utilizing the huge difference in refractive index and Abbe number, the dispersion difference of light of different wavelengths inside the lens and after passing through the lens can be increased, thereby achieving small chromatic aberration and improving resolution. Furthermore, the optical lens can satisfy 0.5≤|F4 / F|≤3, which is conducive to further achieving small chromatic aberration and improving resolution.

[0124] In an exemplary embodiment, the optical lens according to the present application may satisfy: F5 / F≤4.5, where F5 is the focal length of the fifth lens. When this condition is satisfied, the fifth lens has positive focal power and the focal length is set within a reasonable range, which can ensure that light is smoothly converged to the image plane while achieving a small CRA and a long back focus. Furthermore, the optical lens may satisfy F5 / F≤4, which is conducive to further achieving a small CRA and a long back focus.

[0125] In an exemplary embodiment, the optical lens according to the present application may satisfy: d10 / TL≤0.3, where d10 is the center thickness of the fifth lens. This conditional expression is satisfied, and the thickness of the fifth lens is reasonably distributed, which helps to compress and fold the light emitted by the fourth lens while reducing the volume, and reduces the optical path of the light in the fifth lens, so that the light enters the image plane more smoothly, which is conducive to improving telecentricity and achieving a small CRA. Furthermore, the optical lens may satisfy d10 / TL≤0.2, which is conducive to further improving telecentricity and achieving a small CRA.

[0126] In an exemplary embodiment, the optical lens according to the present application may satisfy: d10 / TTL≤0.2. When this condition is satisfied, the thickness of the fifth lens is reasonably distributed, which helps to compress and fold the light emitted by the fourth lens while reducing the volume, and reduces the optical path of the light in the fifth lens, so that the light enters the image plane more smoothly, which is conducive to improving telecentricity and achieving a small CRA. Furthermore, the optical lens may satisfy d10 / TTL≤0.12, which is conducive to further improving telecentricity and achieving a small CRA.

[0127] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.01≤T23 / F≤3. Satisfying this conditional expression and maintaining a larger distance between the second lens and the third lens is conducive to making the light trend more gentle, the degree of deflection of the front and rear groups of light closer, and reducing the sensitivity of the system. Furthermore, the optical lens may satisfy 0.02≤T23 / F≤1.5, which is conducive to further reducing the sensitivity of the system.

[0128] In an exemplary embodiment, the optical lens according to the present application may satisfy: -5≤F / R1≤3. When this condition is satisfied, the first side surface of the first lens is controlled to be a concave surface, and its curvature is controlled within a certain range, which is beneficial to correct the aberration caused by each field of view while collecting large-angle light, thereby improving the resolution. Furthermore, the optical lens may satisfy -3≤F / R1≤1. More specifically, the optical lens may further satisfy -3.5≤F / R1≤0, which is beneficial to further improve the resolution.

[0129] In an exemplary embodiment, the optical lens according to the present application may satisfy: -3.5≤F / R6≤5, where R6 is the radius of curvature of the second side of the third lens. Satisfying this conditional expression and controlling the second side of the third lens to be a concave surface is helpful in helping the third lens receive and correct the aberration of light transmitted from the front group of the aperture, and reasonably compress it, thereby improving the resolution of the system. Furthermore, the optical lens may satisfy -2≤F / R6≤3, which is helpful in further improving the resolution of the system. More specifically, the optical lens may further satisfy 0≤F / R6≤4, so that the first side of the third lens collects the light diverging in front and converges it, so that the aberration is corrected, thereby helping to further improve the resolution.

[0130] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.3≤(T12+T23) / F≤2.2. This conditional expression is satisfied, and the total interval between the first lens and the second lens and between the second lens and the third lens is kept large, so that the divergence trend of the light is lengthened, which is conducive to achieving the telephoto characteristic after the rear lens converges; at the same time, the light has a longer transition zone in the system, and the step-by-step transition forms a gentle light trend, which helps to improve the resolution. Further, the optical lens may satisfy 0.4≤(T12+T23) / F≤2.0, which is conducive to further achieving the telephoto characteristic, forming a gentle light trend, and improving the resolution. More specifically, the optical lens may satisfy 0.8≤(T12+T23) / F≤1.9, and the total interval between the first lens and the second lens and between the second lens and the third lens is kept large, so that the divergence trend of the light is lengthened, which is more conducive to achieving the telephoto characteristic after the rear lens converges, and the resolution can be further improved.

[0131] In an exemplary embodiment, the optical lens according to the present application may satisfy: -10≤F5 / R1≤3. By satisfying this conditional formula and controlling the ratio between the curvature of the first side surface of the first lens and the fifth lens within a reasonable range, it can be ensured that the large field of view light collected by the first lens is converged by the fifth lens, achieving both telephoto and large field of view. Furthermore, the optical lens may satisfy -9≤F5 / R1≤1.5, which is conducive to further achieving both telephoto characteristics and large field of view. More specifically, the optical lens may satisfy -10≤F5 / R1≤0, which can better ensure that the large field of view light collected by the first lens is converged by the fifth lens, achieving both telephoto characteristics and large field of view.

[0132] According to the exemplary embodiment of the present application, the optical lens can simultaneously meet the following conditions: -20≤F12 / F≤3; Dfront / Dback≤0.9, and the combined focal length of the first lens and the second lens is controlled. The apertures of the first lens and the second lens are smaller than those of the third lens, the fourth lens, and the fifth lens. This can achieve high resolution while ensuring a small telecentricity, thereby achieving linkage between high resolution and telecentricity.

[0133] The optical lens according to the exemplary embodiment of the present application can simultaneously satisfy: -5≤F1 / F≤0; 0≤F / R6≤4, and the focal length of the first lens is controlled to be relatively small. The first side surface of the third lens is convex, so that the light can be collected and converged by the first side surface of the third lens after being diverged by the first lens, so that the aberration can be corrected, thereby improving the resolution.

[0134] According to the optical lens of the exemplary embodiment of the present application, the third lens is a positive lens and the fourth lens is a negative lens. The combination of the positive and negative lenses can make the light converge at the front position, reduce the pressure of the rear end fifth lens converging the light, and is more conducive to achieving small telecentricity.

[0135] According to the exemplary embodiment of the present application, the optical lens can simultaneously satisfy: -20≤F12 / F≤0; 1≤F345 / F≤2.5, and the combined focal length of the first lens and the second lens is controlled to be negative, and the combined focal length of the third lens, the fourth lens and the fifth lens is matched to be positive, which can further facilitate the realization of a telephoto effect through linkage.

[0136] The optical lens according to the exemplary embodiment of the present application can simultaneously satisfy: -3.5≤F / R1≤0; Dfront / Dback≤0.9, the surface shape of the first side surface of the first lens is controlled to be concave, and the curvature thereof is controlled to be within a suitable range, and the apertures of the first lens and the second lens are smaller than the apertures of the third lens, the fourth lens and the fifth lens, so that the light tends to diverge as a whole, and the linkage between high resolution and telecentricity can be achieved.

[0137] The optical lens according to the exemplary embodiment of the present application can simultaneously satisfy the following conditions: 0.2mm≤F / FOV×1°≤1.5mm; -10≤F5 / R1≤3, and the relationship between the curvature of the first side surface of the first lens and the focal length of the fifth lens is within a reasonable range, which can ensure that the large field of view light collected by the first lens is converged by the fifth lens, thereby realizing the linkage between telephoto and large field of view.

[0138] The optical lens according to the exemplary embodiment of the present application can simultaneously meet the following conditions: 0.2mm≤F / FOV×1°≤1.5mm; 0.8≤(T12+T23) / F≤1.9, and the total interval between the first lens and the second lens, and between the second lens and the third lens is kept large, so that the divergence trend of the light is lengthened, which is more conducive to realizing the telephoto characteristics of the lens after converging at the rear end lens.

[0139] In an exemplary embodiment, as needed, the optical lens of the present application may further include a filter and / or a protective glass disposed between the fifth lens and the imaging plane to filter light with different wavelengths to prevent damage to the image-side element (e.g., chip) of the optical lens.

[0140] In an exemplary embodiment, the third lens and the fourth lens may form a cemented lens. After the third lens and the fourth lens are cemented, chromatic aberration can be better corrected to improve resolution, and the third lens and the fourth lens can also be reduced in tolerance sensitivity after the cementation. At the same time, the third lens and the fourth lens are cemented to smoothly transition the light passing through the front lens to the rear optical system, reducing the total length of the lens; and can fully correct various aberrations of the optical system, and can improve resolution, optimize optical performance such as distortion and CRA under the premise of compact structure.

[0141] In addition, the above-mentioned gluing method between lenses has at least one of the following advantages: reducing the air gap between the two lenses and reducing the total length of the system; reducing the assembly components between the lenses, reducing the process and reducing the cost; reducing the sensitivity of lens unit tolerances such as tilt / eccentricity generated during the assembly process and improving the production yield; reducing the light loss caused by reflection between lenses and improving the illumination; further reducing the field curvature and effectively correcting the off-axis point aberration of the system. Such a gluing design shares the overall chromatic aberration correction of the system, effectively corrects the aberration to improve the resolution, and makes the optical lens compact as a whole to meet the requirements of miniaturization.

[0142] In an exemplary embodiment, the third lens and the fourth lens may form a negative cemented lens, that is, the third lens is a positive lens and the fourth lens is a negative lens. The third lens and the fourth lens are negatively cemented lenses, which has a better effect of improving the resolution. The light is converged by the third lens and then diverged by the fourth lens. Therefore, the light is refracted more evenly in the process from the third lens to the fifth lens, which is more conducive to improving the resolution.

[0143] In an exemplary embodiment, at least one of the optical surfaces of the first lens to the fifth lens of the optical lens has an inflection. The setting of the inflection is conducive to further correcting the light, so that the light smoothly transitions to the next surface, and the inflection can correct the edge light angle, reduce the edge field aberration, and improve the resolution. In an exemplary embodiment, the first side surface of the first lens and / or the second side surface of the fifth lens may have an inflection point. The setting of the inflection point is conducive to achieving better correction of the aberration of the light emitted from different fields of view while maintaining the overall shape of the lens.

[0144] In an exemplary embodiment, the first lens to the fifth lens may be a spherical lens or an aspherical lens. Exemplarily, at least one of the first lens to the fifth lens is an aspherical lens. The characteristic of an aspherical lens is that the curvature changes continuously from the center of the lens to the periphery. Unlike a spherical lens with a constant curvature from the center of the lens to the periphery, an aspherical lens has a better curvature radius characteristic, and has the advantages of improving distortion aberration and improving astigmatism aberration. After adopting an aspherical lens, the aberration that occurs during imaging can be eliminated as much as possible, thereby improving the imaging quality of the lens. The present application does not specifically limit the specific number of spherical lenses and aspherical lenses. When focusing on imaging quality, the number of aspherical lenses can be increased, or even all lenses use aspherical lenses.

[0145] In an exemplary embodiment, at least one of the first lens, the second lens, or the fifth lens is an aspherical lens. The configuration of the aspherical lens can change the surface shape, thereby changing the angle of light deflection, reducing system aberrations, and further improving resolution. It should be emphasized that, according to actual needs, other lenses may also use aspherical mirror surfaces.

[0146] In an exemplary embodiment, the second lens is an aspherical lens with a concave-convex shape close to concentric circles, which is more conducive to reducing the sensitivity of the front group and improving the system resolution. The MTF (Modulation Transfer Function) value within the spatial cutoff frequency of 60lp / mm is greater than 0.6.

[0147] In an exemplary embodiment, the first lens to the fifth lens may be a glass lens or a plastic lens. The present application does not specifically limit the specific number of glass lenses and plastic lenses. Specifically, when focusing on resolution quality and reliability, the first lens to the fifth lens may all be glass aspherical lenses. An optical lens made of glass can suppress the deviation of the back focus of the imaging system component with temperature changes to improve the stability of the system. At the same time, the use of glass material can avoid problems such as lens imaging blur caused by high and low temperature changes in the use environment and affecting the normal use of the lens. Of course, the first lens to the fifth lens of the optical lens can also be made of a combination of plastic and glass. Of course, in applications where temperature stability requirements are lower, the first lens to the fifth lens in the optical lens can also be made of plastic. Using plastic to make optical lenses can effectively reduce production costs.

[0148] According to the optical lens of the above-mentioned embodiment of the present application, by reasonably setting the number of lenses and the shapes and optical focal lengths of each lens, the optical lens can meet the requirements of miniaturization, high resolution (MTF greater than 0.4 within the spatial cutoff frequency of 60lp / mm), small telecentricity (telecentricity less than 3°), long back focus (back focus length greater than 15mm) and a large field of view (greater than 20°) by using only five lenses.

[0149] However, those skilled in the art should understand that, without departing from the technical solution claimed in the present application, the number of lenses constituting the lens can be changed to obtain the various results and advantages described in this specification. For example, although five lenses are described as an example in the embodiment, the optical lens is not limited to including five lenses. If necessary, the optical lens may also include other numbers of lenses.

[0150] Specific embodiments of the optical lens applicable to the above-mentioned embodiments are further described below with reference to the accompanying drawings.

[0151] Example 1

[0152] The following reference Figure 1 The optical lens according to Example 1 of the present application is described. Figure 1 A schematic structural diagram of an optical lens according to Example 1 of the present application is shown.

[0153] like Figure 1As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis.

[0154] In this embodiment, the optical lens further includes a stop STO, and the stop STO is disposed between the second lens L2 and the third lens L3.

[0155] In this embodiment, the third lens L3 and the fourth lens L4 form a cemented lens.

[0156] The first lens L1 has negative power, and its first side surface S1 is concave, and its second side surface S2 is concave. The second lens L2 has positive power, and its first side surface S3 is convex, and its second side surface S4 is convex. The third lens L3 has negative power, and its first side surface S6 is concave, and its second side surface S7 is concave. The fourth lens L4 has positive power, and its first side surface S8 is convex, and its second side surface S9 is convex. The fifth lens L5 has positive power, and its first side surface S10 is convex, and its second side surface S11 is convex.

[0157] In this embodiment, the optical lens may further include a filter L6 and a protective glass L7 located between the fifth lens L5 and the imaging plane (IMA), the filter L6 having a first side surface S12 and a second side surface S13, and the protective glass L7 having a first side surface S14 and a second side surface S15.

[0158] Table 1 shows the curvature radius R, thickness / distance, refractive index Nd, and Abbe number Vd of each lens of the optical lens of Example 1.

[0159] Table 1

[0160] The optical lens provided in the present application can be used as, for example, a vehicle-mounted lens. In this case, light from an object passes through each optical surface S1 to S15 in sequence and is finally imaged on an imaging surface (IMA) S16 disposed on the second side, wherein an image sensor chip may be disposed at the imaging surface (IMA).

[0161] It should be understood that the optical lens provided in the present application can also be used as, for example, a projection lens or a laser radar transmitting end lens. In this case, light from the image source plane (IMA) passes through each optical surface S15 to S1 in sequence and is finally projected onto an object or a projection surface (not shown) disposed on the first side.

[0162] Example 2

[0163] The following reference Figure 2 The optical lens according to Embodiment 2 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted.

[0164] like Figure 2 As shown, in this embodiment, the first lens L1 has negative focal power, its first side surface S1 is concave, and its second side surface S2 is concave. The second lens L2 has positive focal power, its first side surface S3 is convex, and its second side surface S4 is a plane. The third lens L3 has negative focal power, its first side surface S6 is convex, and its second side surface S7 is concave. The fourth lens L4 has positive focal power, its first side surface S8 is convex, and its second side surface S9 is convex. The fifth lens L5 has positive focal power, its first side surface S10 is convex, and its second side surface S11 is convex.

[0165] Table 2 shows the parameters of each lens of the optical lens of Example 2.

[0166] Table 2

[0167] Example 3

[0168] The following reference Figure 3 Describe the optical lens according to Example 3 of the present application.

[0169] like Figure 3 As shown, in this embodiment, the first lens L1 has negative optical power, its first side surface S1 is concave, and the second side surface S2 is convex. The second lens L2 has positive optical power, its first side surface S3 is concave, and the second side surface S4 is convex. The third lens L3 has negative optical power, its first side surface S6 is convex, and the second side surface S7 is concave. The fourth lens L4 has positive optical power, its first side surface S8 is convex, and the second side surface S9 is convex. The fifth lens L5 has positive optical power, its first side surface S10 is convex, and the second side surface S11 is convex.

[0170] In this embodiment, the optical lens may further include a prism L6 located between the fifth lens L5 and the imaging surface (IMA), and the prism L6 has a first side surface S12 and a second side surface S13.

[0171] Table 3 shows the parameters of each lens of the optical lens of Example 3.

[0172] Table 3

[0173] In this embodiment, the first side surface S1 and the second side surface S2 of the first lens L1 and the first side surface S10 and the second side surface S11 of the fifth lens L5 of the optical lens are aspherical mirror surfaces. The surface shape of each aspherical mirror surface can be defined by but not limited to the following aspherical formula (1).

[0174] (1)

[0175] in,x The aspheric surface is at a height of h When the position is , the distance vector height from the vertex of the aspherical surface; c is the paraxial curvature of the aspheric surface, c =1 / R (i.e., the paraxial curvature c is the radius of curvature in Table 1 above R The inverse of ); k is the cone coefficient; Ai Aspheric i -th order correction factor.

[0176] Table 4 shows the conic coefficient (k) and high-order coefficients that can be used for the aspheric mirror surface in this embodiment. A4 , A6 , A8 , A10 , A12 , A14 and A16 .

[0177] Table 4

[0178] Example 4

[0179] The following reference Figure 4 Describe the optical lens according to Example 4 of the present application.

[0180] like Figure 4 As shown, in this embodiment, the first lens L1 has negative optical power, its first side surface S1 is concave, and the second side surface S2 is concave. The second lens L2 has positive optical power, its first side surface S3 is a plane, and the second side surface S4 is a convex surface. The third lens L3 has negative optical power, its first side surface S6 is a plane, and the second side surface S7 is a concave surface. The fourth lens L4 has positive optical power, its first side surface S8 is convex, and the second side surface S9 is convex. The fifth lens L5 has positive optical power, its first side surface S10 is convex, and the second side surface S11 is convex.

[0181] Table 5 shows the parameters of each lens of the optical lens of Example 4.

[0182] Table 5

[0183] Example 5

[0184] The following reference Figure 5 Describe the optical lens according to Example 5 of the present application.

[0185] like Figure 5As shown, in this embodiment, the first lens L1 has negative focal power, its first side surface S1 is concave, and its second side surface S2 is concave. The second lens L2 has positive focal power, its first side surface S3 is convex, and its second side surface S4 is a plane. The third lens L3 has negative focal power, its first side surface S6 is convex, and its second side surface S7 is concave. The fourth lens L4 has positive focal power, its first side surface S8 is convex, and its second side surface S9 is convex. The fifth lens L5 has positive focal power, its first side surface S10 is convex, and its second side surface S11 is convex.

[0186] Table 6 shows the parameters of each lens of the optical lens of Example 5.

[0187] Table 6

[0188] Example 6

[0189] The following reference Figure 6 Describe the optical lens according to Example 6 of the present application.

[0190] like Figure 6 As shown, in this embodiment, the first lens L1 has negative focal power, its first side surface S1 is concave, and its second side surface S2 is concave. The second lens L2 has positive focal power, its first side surface S3 is convex, and its second side surface S4 is convex. The third lens L3 has negative focal power, its first side surface S6 is convex, and its second side surface S7 is concave. The fourth lens L4 has positive focal power, its first side surface S8 is convex, and its second side surface S9 is convex. The fifth lens L5 has positive focal power, its first side surface S10 is convex, and its second side surface S11 is convex.

[0191] In this embodiment, the optical lens may further include a prism L6 located between the fifth lens L5 and the imaging surface (IMA), and the prism L6 has a first side surface S12 and a second side surface S13.

[0192] Table 7 shows the parameters of each lens of the optical lens of Example 6.

[0193] Table 7

[0194] Table 8 shows the parameters of the aspheric mirror surface that can be used in this embodiment, wherein the parameters of each aspheric surface type can be limited by the formula (1) given in the above embodiment 1, wherein the parameters of each aspheric surface type can be limited by the formula (1) given in the above embodiment 1.

[0195] Table 8

[0196] Example 7

[0197] The following reference Figure 7 Describe the optical lens according to Example 7 of the present application.

[0198] like Figure 7 As shown, in this embodiment, the first lens L1 has negative power, its first side surface S1 is a plane, and the second side surface S2 is a concave surface. The second lens L2 has positive power, its first side surface S3 is a convex surface, and the second side surface S4 is a convex surface. The third lens L3 has negative power, its first side surface S6 is a concave surface, and the second side surface S7 is a concave surface. The fourth lens L4 has positive power, its first side surface S8 is a convex surface, and the second side surface S9 is a convex surface. The fifth lens L5 has positive power, its first side surface S10 is a convex surface, and the second side surface S11 is a convex surface.

[0199] Table 9 shows the parameters of each lens of the optical lens of Example 7.

[0200] Table 9

[0201] Example 8

[0202] The following reference Figure 8 Describe the optical lens according to Example 8 of the present application.

[0203] like Figure 8 As shown, in this embodiment, the first lens L1 has negative optical power, its first side surface S1 is concave, and the second side surface S2 is a plane. The second lens L2 has positive optical power, its first side surface S3 is concave, and the second side surface S4 is convex. The third lens L3 has negative optical power, its first side surface S6 is convex, and the second side surface S7 is concave. The fourth lens L4 has positive optical power, its first side surface S8 is convex, and the second side surface S9 is convex. The fifth lens L5 has positive optical power, its first side surface S10 is convex, and the second side surface S11 is convex.

[0204] In this embodiment, the optical lens may further include a prism L6 located between the fifth lens L5 and the imaging surface (IMA), and the prism L6 has a first side surface S12 and a second side surface S13.

[0205] Table 10 shows the parameters of each lens of the optical lens of Example 8.

[0206] Table 10

[0207] Table 11 shows the parameters of the aspheric mirror surface that can be used in this embodiment, wherein the surface shape of each aspheric mirror surface can be defined by the formula (1) given in the above embodiment 1.

[0208] Table 11

[0209] Example 9

[0210] The following reference Fig. 9 Describe the optical lens according to Example 9 of the present application.

[0211] like Fig. 9 As shown, in this embodiment, the first lens L1 has negative focal power, its first side surface S1 is convex, and the second side surface S2 is concave. The second lens L2 has positive focal power, its first side surface S3 is concave, and the second side surface S4 is convex. The third lens L3 has negative focal power, its first side surface S6 is concave, and the second side surface S7 is concave. The fourth lens L4 has positive focal power, its first side surface S8 is convex, and the second side surface S9 is convex. The fifth lens L5 has positive focal power, its first side surface S10 is convex, and the second side surface S11 is convex.

[0212] Table 12 shows the parameters of each lens of the optical lens of Example 9.

[0213] Table 12

[0214] Table 13 shows the parameters of the aspheric mirror surface that can be used in this embodiment, wherein the surface shape of each aspheric mirror surface can be defined by the formula (1) given in the above embodiment 1.

[0215] Table 13

[0216] Example 10

[0217] The following reference Fig.10 An optical lens according to Example 10 of the present application is described.

[0218] like Fig.10 As shown, in this embodiment, the first lens L1 has negative focal power, its first side surface S1 is concave, and its second side surface S2 is concave. The second lens L2 has positive focal power, its first side surface S3 is convex, and its second side surface S4 is concave. The third lens L3 has negative focal power, its first side surface S6 is convex, and its second side surface S7 is concave. The fourth lens L4 has positive focal power, its first side surface S8 is convex, and its second side surface S9 is convex. The fifth lens L5 has positive focal power, its first side surface S10 is convex, and its second side surface S11 is convex.

[0219] Table 14 shows the parameters of each lens of the optical lens of Example 10.

[0220] Table 14

[0221] Embodiment 11

[0222] The following reference Fig.11 Describe the optical lens according to Example 11 of the present application.

[0223] like Fig.11 As shown, in this embodiment, the first lens L1 has negative focal power, its first side surface S1 is convex, and the second side surface S2 is concave. The second lens L2 has positive focal power, its first side surface S3 is convex, and the second side surface S4 is convex. The third lens L3 has negative focal power, its first side surface S6 is concave, and the second side surface S7 is concave. The fourth lens L4 has positive focal power, its first side surface S8 is convex, and the second side surface S9 is convex. The fifth lens L5 has positive focal power, its first side surface S10 is concave, and the second side surface S11 is convex.

[0224] Table 15 shows the parameters of each lens of the optical lens of Example 11.

[0225] Table 15

[0226] Table 16 shows the parameters of the aspheric mirror surface that can be used in this embodiment, wherein the surface shape of each aspheric mirror surface can be defined by the formula (1) given in the above embodiment 1.

[0227] Table 16

[0228] Example 12

[0229] The following reference Fig.12 Describe the optical lens according to Example 12 of the present application.

[0230] like Fig.12 As shown, in this embodiment, the first lens L1 has negative optical power, its first side surface S1 is convex, and the second side surface S2 is concave. The second lens L2 has positive optical power, its first side surface S3 is concave, and the second side surface S4 is convex. The third lens L3 has negative optical power, its first side surface S6 is concave, and the second side surface S7 is concave. The fourth lens L4 has positive optical power, its first side surface S8 is convex, and the second side surface S9 is convex. The fifth lens L5 has positive optical power, its first side surface S10 is a plane, and the second side surface S11 is convex.

[0231] In this embodiment, the optical lens may further include a prism L6 located between the fifth lens L5 and the imaging surface (IMA), and the prism L6 has a first side surface S12 and a second side surface S13.

[0232] Table 17 shows the parameters of each lens of the optical lens of Example 12.

[0233] Table 17

[0234] Table 18 shows the parameters of the aspheric mirror surface that can be used in this embodiment, wherein the surface shape of each aspheric mirror surface can be defined by the formula (1) given in the above embodiment 1.

[0235] Table 18

[0236] Embodiment 13

[0237] The following reference Fig.13 Describe the optical lens according to Example 13 of the present application.

[0238] like Fig.13 As shown, in this embodiment, the first lens L1 has negative optical power, its first side surface S1 is concave, and the second side surface S2 is concave. The second lens L2 has positive optical power, its first side surface S3 is convex, and the second side surface S4 is convex. The third lens L3 has negative optical power, its first side surface S6 is concave, and the second side surface S7 is concave. The fourth lens L4 has positive optical power, its first side surface S8 is convex, and the second side surface S9 is convex. The fifth lens L5 has positive optical power, its first side surface S10 is convex, and the second side surface S11 is a plane.

[0239] Table 19 shows the parameters of each lens of the optical lens of Example 13.

[0240] Table 19

[0241] Embodiment 14

[0242] The following reference Fig.14 Describe the optical lens according to Example 14 of the present application.

[0243] like Fig.14 As shown, the optical lens includes a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis.

[0244] The first lens L1 has negative power, and its first side surface S1 is concave, and its second side surface S2 is concave. The second lens L2 has positive power, and its first side surface S3 is convex, and its second side surface S4 is convex. The third lens L3 has negative power, and its first side surface S6 is concave, and its second side surface S7 is concave. The fourth lens L4 has positive power, and its first side surface S8 is convex, and its second side surface S9 is convex. The fifth lens L5 has positive power, and its first side surface S10 is convex, and its second side surface S11 is concave.

[0245] Table 20 shows the parameters of each lens of the optical lens of Example 14.

[0246] Table 20

[0247] Table 21 shows the parameters of the aspheric mirror surface that can be used in this embodiment, wherein each aspheric surface shape can be defined by the formula (1) given in the above embodiment 1.

[0248] Table 21

[0249] According to the optical lenses of Examples 1 to 14 of the present application, the MTF value at a spatial frequency of 60lp / mm is in the range of 0.4 to 0.68; the telecentricity is between 1.69° and 2.26°, which is less than 3° overall; and the optical distortion is in the range of 1.2% to 5.5%. It can be seen that the optical lenses provided in Examples 1 to 14 have high resolution and can achieve good imaging quality.

[0250] Embodiment 15

[0251] The following reference Fig.15 Describe the optical lens according to Example 15 of the present application.

[0252] like Fig.15 As shown, in this embodiment, the first lens L1 has negative focal power, its first side surface S1 is concave, and its second side surface S2 is concave. The second lens L2 has positive focal power, its first side surface S3 is convex, and its second side surface S4 is concave. The third lens L3 has positive focal power, its first side surface S6 is convex, and its second side surface S7 is convex. The fourth lens L4 has negative focal power, its first side surface S8 is concave, and its second side surface S9 is a plane. The fifth lens L5 has positive focal power, its first side surface S10 is convex, and its second side surface S11 is convex.

[0253] Table 22 shows the parameters of each lens of the optical lens of Example 15.

[0254] Table 22

[0255] Table 23 shows the parameters of the aspheric mirror surface that can be used in this embodiment, wherein each aspheric surface shape can be defined by the formula (1) given in the above embodiment 1.

[0256] Table 23

[0257] Example 16

[0258] The following reference Fig.16Describe the optical lens according to Example 16 of the present application.

[0259] like Fig.16 As shown, in this embodiment, the first lens L1 has negative optical power, its first side surface S1 is concave, and the second side surface S2 is a plane. The second lens L2 has positive optical power, its first side surface S3 is concave, and the second side surface S4 is convex. The third lens L3 has positive optical power, its first side surface S6 is convex, and the second side surface S7 is convex. The fourth lens L4 has negative optical power, its first side surface S8 is concave, and the second side surface S9 is convex. The fifth lens L5 has positive optical power, its first side surface S10 is a plane, and the second side surface S11 is a convex surface.

[0260] Table 24 shows the parameters of each lens of the optical lens of Example 16.

[0261] Table 24

[0262] Table 25 shows the parameters of the aspheric mirror surface that can be used in this embodiment, wherein each aspheric surface shape can be defined by the formula (1) given in the above embodiment 1.

[0263] Table 25

[0264] Embodiment 17

[0265] The following reference Fig.17 Describe the optical lens according to Example 17 of the present application.

[0266] like Fig.17 As shown, in this embodiment, the first lens L1 has negative focal power, its first side surface S1 is concave, and the second side surface S2 is convex. The second lens L2 has positive focal power, its first side surface S3 is concave, and the second side surface S4 is convex. The third lens L3 has positive focal power, its first side surface S6 is convex, and the second side surface S7 is convex. The fourth lens L4 has negative focal power, its first side surface S8 is concave, and the second side surface S9 is convex. The fifth lens L5 has positive focal power, its first side surface S10 is concave, and the second side surface S11 is convex.

[0267] In this embodiment, the second side surface S2 of the first lens L1 is inversely curved.

[0268] In this embodiment, the optical lens may further include a prism L6 located between the fifth lens L5 and the imaging surface (IMA), and the prism L6 has a first side surface S12 and a second side surface S13.

[0269] Table 26 shows the parameters of each lens of the optical lens of Example 17.

[0270] Table 26

[0271] Table 27 shows the parameters of the aspheric mirror surface that can be used in this embodiment, wherein each aspheric surface shape can be defined by the formula (1) given in the above embodiment 1.

[0272] Table 27

[0273] Embodiment 18

[0274] The following reference Fig.18 Describe the optical lens according to Example 18 of the present application.

[0275] like Fig.18 As shown, in this embodiment, the first lens L1 has negative focal power, its first side surface S1 is a plane, and the second side surface S2 is a concave surface. The second lens L2 has positive focal power, its first side surface S3 is a convex surface, and the second side surface S4 is a concave surface. The third lens L3 has positive focal power, its first side surface S6 is a convex surface, and the second side surface S7 is a convex surface. The fourth lens L4 has negative focal power, its first side surface S8 is a concave surface, and the second side surface S9 is a concave surface. The fifth lens L5 has positive focal power, its first side surface S10 is a convex surface, and the second side surface S11 is a convex surface.

[0276] Table 28 shows the parameters of each lens of the optical lens of Example 18.

[0277] Table 28

[0278] Table 29 shows the parameters of the aspheric mirror surface that can be used in this embodiment, wherein each aspheric surface shape can be defined by the formula (1) given in the above embodiment 1.

[0279] Table 29

[0280] Embodiment 19

[0281] The following reference Fig.19 Describe the optical lens according to Example 19 of the present application.

[0282] like Fig.19As shown, in this embodiment, the first lens L1 has negative focal power, its first side surface S1 is convex, and the second side surface S2 is concave. The second lens L2 has positive focal power, its first side surface S3 is convex, and the second side surface S4 is concave. The third lens L3 has positive focal power, its first side surface S6 is convex, and the second side surface S7 is convex. The fourth lens L4 has negative focal power, its first side surface S8 is concave, and the second side surface S9 is convex. The fifth lens L5 has positive focal power, its first side surface S10 is convex, and the second side surface S11 is a plane.

[0283] In this embodiment, the second side surface S4 of the second lens L2 is inversely curved.

[0284] Table 30 shows the parameters of each lens of the optical lens of Example 19.

[0285] Table 30

[0286] Table 31 shows the parameters of the aspheric mirror surface that can be used in this embodiment, wherein each aspheric surface shape can be defined by the formula (1) given in the above embodiment 1.

[0287] Table 31

[0288] Embodiment 20

[0289] The following reference Fig. 20 Describe the optical lens according to Example 20 of the present application.

[0290] like Fig. 20 As shown, in this embodiment, the first lens L1 has negative focal power, its first side surface S1 is concave, and its second side surface S2 is concave. The second lens L2 has positive focal power, its first side surface S3 is convex, and its second side surface S4 is a plane. The third lens L3 has positive focal power, its first side surface S6 is convex, and its second side surface S7 is convex. The fourth lens L4 has negative focal power, its first side surface S8 is concave, and its second side surface S9 is convex. The fifth lens L5 has positive focal power, its first side surface S10 is convex, and its second side surface S11 is concave.

[0291] In this embodiment, the optical lens may further include a prism L6 located between the fifth lens L5 and the imaging surface (IMA), and the prism L6 has a first side surface S12 and a second side surface S13.

[0292] Table 32 shows the parameters of each lens of the optical lens of Example 20.

[0293] Table 32

[0294] Table 33 shows the parameters of the aspheric mirror surface that can be used in this embodiment, wherein each aspheric surface shape can be defined by the formula (1) given in the above embodiment 1.

[0295] Table 33

[0296] Embodiment 21

[0297] The following reference Fig.21 Describe the optical lens according to Example 21 of the present application.

[0298] like Fig.21 As shown, in this embodiment, the first lens L1 has negative power, its first side surface S1 is concave, and its second side surface S2 is concave. The second lens L2 has positive power, its first side surface S3 is a plane, and its second side surface S4 is a convex surface. The third lens L3 has positive power, its first side surface S6 is a plane, and its second side surface S7 is a convex surface. The fourth lens L4 has negative power, its first side surface S8 is concave, and its second side surface S9 is convex. The fifth lens L5 has positive power, its first side surface S10 is convex, and its second side surface S11 is convex.

[0299] Table 34 shows the parameters of each lens of the optical lens of Example 21.

[0300] Table 34

[0301] Table 35 shows the parameters of the aspheric mirror surface that can be used in this embodiment, wherein each aspheric surface shape can be defined by the formula (1) given in the above embodiment 1.

[0302] Table 35

[0303] Embodiment 22

[0304] The following reference Fig. 22 Describe the optical lens according to Example 22 of the present application.

[0305] like Fig. 22 As shown, in this embodiment, the first lens L1 has negative focal power, its first side surface S1 is concave, and its second side surface S2 is concave. The second lens L2 has positive focal power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 has positive focal power, its first side surface S6 is concave, and its second side surface S7 is convex. The fourth lens L4 has negative focal power, its first side surface S8 is concave, and its second side surface S9 is convex. The fifth lens L5 has positive focal power, its first side surface S10 is convex, and its second side surface S11 is convex.

[0306] Table 36 shows the parameters of each lens of the optical lens of Example 22.

[0307] Table 36

[0308] Table 37 shows the parameters of the aspheric mirror surface that can be used in this embodiment, wherein each aspheric surface shape can be defined by the formula (1) given in the above embodiment 1.

[0309] Table 37

[0310] Embodiment 23

[0311] The following reference Fig.23 Describe the optical lens according to Example 23 of the present application.

[0312] like Fig.23 As shown, in this embodiment, the first lens L1 has negative focal power, its first side surface S1 is concave, and the second side surface S2 is convex. The second lens L2 has positive focal power, its first side surface S3 is convex, and the second side surface S4 is convex. The third lens L3 has positive focal power, its first side surface S6 is convex, and the second side surface S7 is a plane. The fourth lens L4 has negative focal power, its first side surface S8 is a plane, and the second side surface S9 is a concave surface. The fifth lens L5 has positive focal power, its first side surface S10 is convex, and the second side surface S11 is convex.

[0313] In this embodiment, the second side surface S2 of the first lens L1 and the second side surface S11 of the fifth lens L5 are inversely curved.

[0314] In this embodiment, the optical lens may further include a prism L6 located between the fifth lens L5 and the imaging surface (IMA), and the prism L6 has a first side surface S12 and a second side surface S13.

[0315] Table 38 shows the parameters of each lens of the optical lens of Example 23.

[0316] Table 38

[0317] Table 39 shows the parameters of the aspheric mirror surface that can be used in this embodiment, wherein each aspheric surface shape can be defined by the formula (1) given in the above embodiment 1.

[0318] Table 39

[0319] Embodiment 24

[0320] The following reference Fig.24Describe the optical lens according to Example 24 of the present application.

[0321] like Fig.24 As shown, in this embodiment, the first lens L1 has negative focal power, its first side surface S1 is concave, and the second side surface S2 is convex. The second lens L2 has positive focal power, its first side surface S3 is convex, and the second side surface S4 is convex. The third lens L3 has positive focal power, its first side surface S6 is convex, and the second side surface S7 is concave. The fourth lens L4 has negative focal power, its first side surface S8 is convex, and the second side surface S9 is concave. The fifth lens L5 has positive focal power, its first side surface S10 is convex, and the second side surface S11 is convex.

[0322] In this embodiment, the second side surface S2 of the first lens L1 and the second side surface S11 of the fifth lens L5 are inversely curved.

[0323] Table 40 shows the parameters of each lens of the optical lens of Example 24.

[0324] Table 40

[0325] Table 41 shows the parameters of the aspheric mirror surface that can be used in this embodiment, wherein each aspheric surface shape can be defined by the formula (1) given in the above embodiment 1.

[0326] Table 41

[0327] Embodiment 25

[0328] The following reference Fig.25 Describe the optical lens according to Example 25 of the present application.

[0329] like Fig.25 As shown, the optical lens includes a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis.

[0330] The first lens L1 has negative power, its first side surface S1 is concave, and the second side surface S2 is convex. The second lens L2 has positive power, its first side surface S3 is convex, and the second side surface S4 is convex. The third lens L3 has positive power, its first side surface S6 is convex, and the second side surface S7 is concave. The fourth lens L4 has negative power, its first side surface S8 is concave, and the second side surface S9 is concave. The fifth lens L5 has positive power, its first side surface S10 is convex, and the second side surface S11 is convex.

[0331] In this embodiment, the second side surface S2 of the first lens L1 and the second side surface S11 of the fifth lens L5 are inversely curved.

[0332] In this embodiment, the optical lens may further include a prism L6 located between the fifth lens L5 and the imaging surface (IMA), and the prism L6 has a first side surface S12 and a second side surface S13.

[0333] Table 42 shows the parameters of each lens of the optical lens of Example 25.

[0334] Table 42

[0335] Table 43 shows the parameters of the aspheric mirror surface that can be used in this embodiment, wherein each aspheric surface shape can be defined by the formula (1) given in the above embodiment 1.

[0336] Table 43

[0337] Embodiment 26

[0338] The following reference Fig.26 Describe the optical lens according to Example 26 of the present application.

[0339] like Fig.26 As shown, the optical lens includes a first lens L1, an aperture STO, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis.

[0340] The first lens L1 has negative power, its first side surface S1 is concave, and the second side surface S2 is convex. The second lens L2 has positive power, its first side surface S4 is concave, and the second side surface S5 is convex. The third lens L3 has positive power, its first side surface S6 is convex, and the second side surface S7 is convex. The fourth lens L4 has negative power, its first side surface S8 is concave, and the second side surface S9 is convex. The fifth lens L5 has positive power, its first side surface S10 is convex, and the second side surface S11 is concave.

[0341] Table 44 shows the parameters of each lens of the optical lens of Example 26.

[0342] Table 44

[0343] Embodiment 27

[0344] The following reference Fig. 27 Describe the optical lens according to Example 27 of the present application.

[0345] like Fig. 27As shown, the optical lens includes a first lens L1, a stop STO, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis, wherein the third lens L3 and the fourth lens L4 form a cemented lens.

[0346] The first lens L1 has negative power, its first side surface S1 is concave, and the second side surface S2 is convex. The second lens L2 has positive power, its first side surface S4 is concave, and the second side surface S5 is convex. The third lens L3 has positive power, its first side surface S6 is convex, and the second side surface S7 is convex. The fourth lens L4 has negative power, its first side surface S8 is concave, and the second side surface S9 is convex. The fifth lens L5 has positive power, its first side surface S10 is convex, and the second side surface S11 is concave.

[0347] Table 45 shows the parameters of each lens of the optical lens of Example 27.

[0348] Table 45

[0349] Table 46 shows the parameters of the aspheric mirror surface that can be used in this embodiment, wherein each aspheric surface shape can be defined by the formula (1) given in the above embodiment 1.

[0350] Table 46

[0351] According to the optical lenses of Examples 15 to 27 of the present application, the MTF value at a spatial frequency of 60lp / mm is in the range of 0.4 to 0.7; the telecentricity is between 1.29° and 2.27°, which is less than 3° overall; the optical distortion is in the range of 3.43% to 7.82%, and further, the optical distortion can be controlled in the range of 3.43% to 5.5%. It can be seen that the optical lenses provided in Examples 15 to 27 have high resolution and can achieve good imaging quality.

[0352] Embodiment 28

[0353] The following reference Fig.28 Describe the optical lens according to Example 28 of the present application.

[0354] like Fig.28As shown, in this embodiment, the first lens L1 has negative focal power, its first side surface S1 is concave, and its second side surface S2 is concave. The second lens L2 has positive focal power, its first side surface S3 is convex, and its second side surface S4 is concave. The third lens L3 has positive focal power, its first side surface S6 is convex, and its second side surface S7 is convex. The fourth lens L4 has negative focal power, its first side surface S8 is concave, and its second side surface S9 is convex. The fifth lens L5 has positive focal power, its first side surface S10 is convex, and its second side surface S11 is convex.

[0355] Table 47 shows the parameters of each lens of the optical lens of Example 28.

[0356] Table 47

[0357] Table 48 shows the parameters of the aspheric mirror surface that can be used in this embodiment, wherein each aspheric surface shape can be defined by the formula (1) given in the above embodiment 1.

[0358] Table 48

[0359] Embodiment 29

[0360] The following reference Fig.29 Describe the optical lens according to Example 29 of the present application.

[0361] like Fig.29 As shown, in this embodiment, the first lens L1 has negative optical power, its first side surface S1 is concave, and the second side surface S2 is a plane. The second lens L2 has positive optical power, its first side surface S3 is concave, and the second side surface S4 is convex. The third lens L3 has positive optical power, its first side surface S6 is convex, and the second side surface S7 is convex. The fourth lens L4 has negative optical power, its first side surface S8 is concave, and the second side surface S9 is convex. The fifth lens L5 has positive optical power, its first side surface S10 is a plane, and the second side surface S11 is a convex surface.

[0362] Table 49 shows the parameters of each lens of the optical lens of Example 29.

[0363] Table 49

[0364] Table 50 shows the parameters of the aspheric mirror surface that can be used in this embodiment, wherein each aspheric surface shape can be defined by the formula (1) given in the above embodiment 1.

[0365] Table 50

[0366] Embodiment 30

[0367] The following reference Fig.30 Describe the optical lens according to Example 30 of the present application.

[0368] like Fig.30 As shown, in this embodiment, the first lens L1 has negative focal power, its first side surface S1 is concave, and the second side surface S2 is convex. The second lens L2 has positive focal power, its first side surface S3 is concave, and the second side surface S4 is convex. The third lens L3 has positive focal power, its first side surface S6 is convex, and the second side surface S7 is convex. The fourth lens L4 has negative focal power, its first side surface S8 is concave, and the second side surface S9 is convex. The fifth lens L5 has positive focal power, its first side surface S10 is concave, and the second side surface S11 is convex.

[0369] In this embodiment, the second side surface S2 of the first lens L1 is inversely curved.

[0370] In this embodiment, the optical lens may further include a prism L6 located between the fifth lens L5 and the imaging surface (IMA), and the prism L6 has a first side surface S12 and a second side surface S13.

[0371] Table 51 shows the parameters of each lens of the optical lens of Example 30.

[0372] Table 51

[0373] Table 50 shows the parameters of the aspheric mirror surface that can be used in this embodiment, wherein each aspheric surface shape can be defined by the formula (1) given in the above embodiment 1.

[0374] Table 50

[0375] Embodiment 31

[0376] The following reference Fig.31 Describe the optical lens according to Example 31 of the present application.

[0377] like Fig.31 As shown, in this embodiment, the first lens L1 has negative focal power, its first side surface S1 is a plane, and the second side surface S2 is a concave surface. The second lens L2 has positive focal power, its first side surface S3 is a convex surface, and the second side surface S4 is a concave surface. The third lens L3 has positive focal power, its first side surface S6 is a convex surface, and the second side surface S7 is a convex surface. The fourth lens L4 has negative focal power, its first side surface S8 is a concave surface, and the second side surface S9 is a concave surface. The fifth lens L5 has positive focal power, its first side surface S10 is a convex surface, and the second side surface S11 is a convex surface.

[0378] Table 51 shows the parameters of each lens of the optical lens of Example 31.

[0379] Table 51

[0380] Table 52 shows the parameters of the aspheric mirror surface that can be used in this embodiment, wherein each aspheric surface shape can be defined by the formula (1) given in the above embodiment 1.

[0381] Table 52

[0382] Embodiment 32

[0383] The following reference Fig.32 Describe the optical lens according to Example 32 of the present application.

[0384] like Fig.32 As shown, in this embodiment, the first lens L1 has negative focal power, its first side surface S1 is convex, and the second side surface S2 is concave. The second lens L2 has positive focal power, its first side surface S3 is convex, and the second side surface S4 is concave. The third lens L3 has positive focal power, its first side surface S6 is convex, and the second side surface S7 is convex. The fourth lens L4 has negative focal power, its first side surface S8 is concave, and the second side surface S9 is convex. The fifth lens L5 has positive focal power, its first side surface S10 is convex, and the second side surface S11 is a plane.

[0385] Table 53 shows the parameters of each lens of the optical lens of Example 32.

[0386] Table 53

[0387] Table 54 shows the parameters of the aspheric mirror surface that can be used in this embodiment, wherein each aspheric surface shape can be defined by the formula (1) given in the above embodiment 1.

[0388] Table 54

[0389] Embodiment 33

[0390] The following reference Fig.33 Describe the optical lens according to Example 33 of the present application.

[0391] like Fig.33As shown, in this embodiment, the first lens L1 has negative focal power, its first side surface S1 is concave, and its second side surface S2 is concave. The second lens L2 has positive focal power, its first side surface S3 is convex, and its second side surface S4 is a plane. The third lens L3 has positive focal power, its first side surface S6 is convex, and its second side surface S7 is convex. The fourth lens L4 has negative focal power, its first side surface S8 is concave, and its second side surface S9 is convex. The fifth lens L5 has positive focal power, its first side surface S10 is convex, and its second side surface S11 is concave.

[0392] In this embodiment, the optical lens may further include a prism L6 located between the fifth lens L5 and the imaging surface (IMA), and the prism L6 has a first side surface S12 and a second side surface S13.

[0393] Table 55 shows the parameters of each lens of the optical lens of Example 33.

[0394] Table 55

[0395] Table 56 shows the parameters of the aspheric mirror surface that can be used in this embodiment, wherein each aspheric surface shape can be defined by the formula (1) given in the above embodiment 1.

[0396] Table 56

[0397] Embodiment 34

[0398] The following reference Fig.34 Describe the optical lens according to Example 34 of the present application.

[0399] like Fig.34 As shown, in this embodiment, the first lens L1 has negative power, its first side surface S1 is concave, and its second side surface S2 is concave. The second lens L2 has positive power, its first side surface S3 is a plane, and its second side surface S4 is a convex surface. The third lens L3 has positive power, its first side surface S6 is a plane, and its second side surface S7 is a convex surface. The fourth lens L4 has negative power, its first side surface S8 is concave, and its second side surface S9 is convex. The fifth lens L5 has positive power, its first side surface S10 is convex, and its second side surface S11 is convex.

[0400] Table 57 shows the parameters of each lens of the optical lens of Example 34.

[0401] Table 57

[0402] Table 58 shows the parameters of the aspheric mirror surface that can be used in this embodiment, wherein each aspheric surface shape can be defined by the formula (1) given in the above embodiment 1.

[0403] Table 58

[0404] Embodiment 35

[0405] The following reference Fig.35 Describe the optical lens according to Example 35 of the present application.

[0406] like Fig.35 As shown, in this embodiment, the first lens L1 has negative focal power, its first side surface S1 is concave, and its second side surface S2 is concave. The second lens L2 has positive focal power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 has positive focal power, its first side surface S6 is concave, and its second side surface S7 is convex. The fourth lens L4 has negative focal power, its first side surface S8 is concave, and its second side surface S9 is convex. The fifth lens L5 has positive focal power, its first side surface S10 is convex, and its second side surface S11 is convex.

[0407] In this embodiment, the optical lens may further include a prism L6 located between the fifth lens L5 and the imaging surface (IMA), and the prism L6 has a first side surface S12 and a second side surface S13.

[0408] Table 59 shows the parameters of each lens of the optical lens of Example 35.

[0409] Table 59

[0410] Table 60 shows the parameters of the aspheric mirror surface that can be used in this embodiment, wherein each aspheric surface shape can be defined by the formula (1) given in the above embodiment 1.

[0411] Table 60

[0412] Embodiment 36

[0413] The following reference Fig.36 Describe the optical lens according to Example 36 of the present application.

[0414] like Fig.36As shown, in this embodiment, the first lens L1 has negative focal power, its first side surface S1 is concave, and the second side surface S2 is convex. The second lens L2 has positive focal power, its first side surface S3 is convex, and the second side surface S4 is convex. The third lens L3 has positive focal power, its first side surface S6 is convex, and the second side surface S7 is concave. The fourth lens L4 has negative focal power, its first side surface S8 is convex, and the second side surface S9 is concave. The fifth lens L5 has positive focal power, its first side surface S10 is convex, and the second side surface S11 is convex.

[0415] In this embodiment, the second side surface S2 of the first lens L1 and the second side surface S11 of the fifth lens L5 are inversely curved.

[0416] Table 61 shows the parameters of each lens of the optical lens of Example 36.

[0417] Table 61

[0418] Table 62 shows the parameters of the aspheric mirror surface that can be used in this embodiment, wherein each aspheric surface shape can be defined by the formula (1) given in the above embodiment 1.

[0419] Table 62

[0420] Embodiment 37

[0421] The following reference Fig.37 Describe the optical lens according to Example 37 of the present application.

[0422] like Fig.37 As shown, in this embodiment, the first lens L1 has negative focal power, its first side surface S1 is concave, and the second side surface S2 is convex. The second lens L2 has positive focal power, its first side surface S3 is convex, and the second side surface S4 is convex. The third lens L3 has positive focal power, its first side surface S6 is convex, and the second side surface S7 is convex. The fourth lens L4 has negative focal power, its first side surface S8 is concave, and the second side surface S9 is concave. The fifth lens L5 has positive focal power, its first side surface S10 is convex, and the second side surface S11 is convex.

[0423] In this embodiment, the second side surface S2 of the first lens L1 and the second side surface S11 of the fifth lens L5 are inversely curved.

[0424] Table 63 shows the parameters of each lens of the optical lens of Example 37.

[0425] Table 63

[0426] Table 64 shows the parameters of the aspheric mirror surface that can be used in this embodiment, wherein each aspheric surface shape can be defined by the formula (1) given in the above embodiment 1.

[0427] Table 64

[0428] Embodiment 38

[0429] The following reference Fig.38 Describe the optical lens according to Example 38 of the present application.

[0430] like Fig.38 As shown, in this embodiment, the first lens L1 has negative focal power, its first side surface S1 is concave, and the second side surface S2 is convex. The second lens L2 has positive focal power, its first side surface S3 is convex, and the second side surface S4 is convex. The third lens L3 has positive focal power, its first side surface S6 is convex, and the second side surface S7 is concave. The fourth lens L4 has negative focal power, its first side surface S8 is concave, and the second side surface S9 is concave. The fifth lens L5 has positive focal power, its first side surface S10 is convex, and the second side surface S11 is convex.

[0431] In this embodiment, the second side surface S2 of the first lens L1 and the second side surface S11 of the fifth lens L5 are inversely curved.

[0432] Table 65 shows the parameters of each lens of the optical lens of Example 38.

[0433] Table 65

[0434] Table 66 shows the parameters of the aspheric mirror surface that can be used in this embodiment, wherein each aspheric surface shape can be defined by the formula (1) given in the above embodiment 1.

[0435] Table 66

[0436] Embodiment 39

[0437] The following reference Fig.39 Describe the optical lens according to Example 39 of the present application.

[0438] like Fig.39As shown, in this embodiment, the first lens L1 has negative focal power, its first side surface S1 is concave, and the second side surface S2 is convex. The second lens L2 has positive focal power, its first side surface S4 is concave, and the second side surface S5 is convex. The third lens L3 has positive focal power, its first side surface S6 is convex, and the second side surface S7 is convex. The fourth lens L4 has negative focal power, its first side surface S8 is concave, and the second side surface S9 is convex. The fifth lens L5 has positive focal power, its first side surface S10 is convex, and the second side surface S11 is concave.

[0439] In this embodiment, the optical lens may further include a prism L6 located between the fifth lens L5 and the imaging surface (IMA), and the prism L6 has a first side surface S12 and a second side surface S13.

[0440] Table 67 shows the parameters of each lens of the optical lens of Example 39.

[0441] Table 67

[0442] Table 68 shows the parameters of the aspheric mirror surface that can be used in this embodiment, wherein each aspheric surface shape can be defined by the formula (1) given in the above embodiment 1.

[0443] Table 68

[0444] Embodiment 40

[0445] The following reference Fig.40 Describe the optical lens according to Example 40 of the present application.

[0446] like Fig.40 As shown, the optical lens includes a first lens L1, an aperture STO, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the first side to the second side along the optical axis.

[0447] The first lens L1 has negative power, its first side surface S1 is concave, and the second side surface S2 is convex. The second lens L2 has positive power, its first side surface S4 is concave, and the second side surface S5 is convex. The third lens L3 has positive power, its first side surface S6 is convex, and the second side surface S7 is convex. The fourth lens L4 has negative power, its first side surface S8 is concave, and the second side surface S9 is convex. The fifth lens L5 has positive power, its first side surface S10 is convex, and the second side surface S11 is concave.

[0448] Table 69 shows the parameters of each lens of the optical lens of Example 40.

[0449] Table 69

[0450] According to the optical lenses of Examples 28 to 40 of the present application, the MTF value at the spatial frequency of 60lp / mm is in the range of 0.3 to 0.58; the telecentricity is between 0.5° and 2.7°, which is less than 3° overall; the optical distortion is in the range of 3.43% to 7.82%, and further, the optical distortion can be controlled in the range of 3.43% to 5.5%. It can be seen that the optical lenses provided in Examples 28 to 40 have high resolution and can achieve good imaging quality.

[0451] Embodiment 41

[0452] The following reference Fig.41 Describe the optical lens according to Example 41 of the present application.

[0453] like Fig.41 As shown, in this embodiment, the first lens L1 has negative focal power, its first side surface S1 is concave, and its second side surface S2 is concave. The second lens L2 has positive focal power, its first side surface S3 is convex, and its second side surface S4 is convex. The third lens L3 has negative focal power, its first side surface S6 is concave, and its second side surface S7 is concave. The fourth lens L4 has positive focal power, its first side surface S8 is convex, and its second side surface S9 is convex. The fifth lens L5 has positive focal power, its first side surface S10 is convex, and its second side surface S11 is convex.

[0454] In this embodiment, the optical lens may further include a filter L6 and a protective glass L7 located between the fifth lens L5 and the imaging plane (IMA), the filter L6 having a first side surface S12 and a second side surface S13, and the protective glass L7 having a first side surface S14 and a second side surface S15.

[0455] Table 70 shows the parameters of each lens of the optical lens of Example 41.

[0456] Table 70

[0457] Embodiment 42

[0458] The following reference Fig.42 Describe the optical lens according to Example 42 of the present application.

[0459] like Fig.42As shown, in this embodiment, the first lens L1 has negative focal power, its first side surface S1 is concave, and its second side surface S2 is concave. The second lens L2 has positive focal power, its first side surface S3 is convex, and its second side surface S4 is a plane. The third lens L3 has negative focal power, its first side surface S6 is convex, and its second side surface S7 is concave. The fourth lens L4 has positive focal power, its first side surface S8 is convex, and its second side surface S9 is convex. The fifth lens L5 has positive focal power, its first side surface S10 is convex, and its second side surface S11 is convex.

[0460] Table 71 shows the parameters of each lens of the optical lens of Example 42.

[0461] Table 71

[0462] Embodiment 43

[0463] The following reference Fig.43 Describe the optical lens according to Example 43 of the present application.

[0464] like Fig.43 As shown, in this embodiment, the first lens L1 has negative optical power, its first side surface S1 is concave, and the second side surface S2 is convex. The second lens L2 has positive optical power, its first side surface S3 is concave, and the second side surface S4 is convex. The third lens L3 has negative optical power, its first side surface S6 is convex, and the second side surface S7 is concave. The fourth lens L4 has positive optical power, its first side surface S8 is convex, and the second side surface S9 is convex. The fifth lens L5 has positive optical power, its first side surface S10 is convex, and the second side surface S11 is convex.

[0465] Table 72 shows the parameters of each lens of the optical lens of Example 43.

[0466] Table 72

[0467] Table 73 shows the parameters of the aspheric mirror surface that can be used in this embodiment, wherein each aspheric surface shape can be defined by the formula (1) given in the above embodiment 1.

[0468] Table 73

[0469] Embodiment 44

[0470] The following reference Fig.44 Describe the optical lens according to Example 44 of the present application.

[0471] like Fig.44As shown, in this embodiment, the first lens L1 has negative optical power, its first side surface S1 is concave, and the second side surface S2 is concave. The second lens L2 has positive optical power, its first side surface S3 is a plane, and the second side surface S4 is a convex surface. The third lens L3 has negative optical power, its first side surface S6 is a plane, and the second side surface S7 is a concave surface. The fourth lens L4 has positive optical power, its first side surface S8 is convex, and the second side surface S9 is convex. The fifth lens L5 has positive optical power, its first side surface S10 is convex, and the second side surface S11 is convex.

[0472] Table 74 shows the parameters of each lens of the optical lens of Example 44.

[0473] Table 74

[0474] Embodiment 45

[0475] The following reference Fig.45 Describe the optical lens according to Example 45 of the present application.

[0476] like Fig.45 As shown, in this embodiment, the first lens L1 has negative focal power, its first side surface S1 is concave, and its second side surface S2 is concave. The second lens L2 has positive focal power, its first side surface S3 is convex, and its second side surface S4 is a plane. The third lens L3 has negative focal power, its first side surface S6 is convex, and its second side surface S7 is concave. The fourth lens L4 has positive focal power, its first side surface S8 is convex, and its second side surface S9 is convex. The fifth lens L5 has positive focal power, its first side surface S10 is convex, and its second side surface S11 is convex.

[0477] In this embodiment, the optical lens may further include a prism L6 located between the fifth lens L5 and the imaging surface (IMA), and the prism L6 has a first side surface S12 and a second side surface S13.

[0478] Table 75 shows the parameters of each lens of the optical lens of Example 45.

[0479] Table 75

[0480] Embodiment 46

[0481] The following reference Fig.46 Describe the optical lens according to Example 46 of the present application.

[0482] like Fig.46As shown, in this embodiment, the first lens L1 has negative focal power, its first side surface S1 is concave, and its second side surface S2 is concave. The second lens L2 has positive focal power, its first side surface S3 is convex, and its second side surface S4 is convex. The third lens L3 has negative focal power, its first side surface S6 is convex, and its second side surface S7 is concave. The fourth lens L4 has positive focal power, its first side surface S8 is convex, and its second side surface S9 is convex. The fifth lens L5 has positive focal power, its first side surface S10 is convex, and its second side surface S11 is concave.

[0483] Table 76 shows the parameters of each lens of the optical lens of Example 46.

[0484] Table 76

[0485] Table 77 shows the parameters of the aspheric mirror surface that can be used in this embodiment, wherein each aspheric surface shape can be defined by the formula (1) given in the above embodiment 1.

[0486] Table 77

[0487] Embodiment 47

[0488] The following reference Fig.47 Describe the optical lens according to Example 47 of the present application.

[0489] like Fig.47 As shown, in this embodiment, the first lens L1 has negative power, its first side surface S1 is a plane, and the second side surface S2 is a concave surface. The second lens L2 has positive power, its first side surface S3 is a convex surface, and the second side surface S4 is a convex surface. The third lens L3 has negative power, its first side surface S6 is a concave surface, and the second side surface S7 is a concave surface. The fourth lens L4 has positive power, its first side surface S8 is a convex surface, and the second side surface S9 is a convex surface. The fifth lens L5 has positive power, its first side surface S10 is a convex surface, and the second side surface S11 is a convex surface.

[0490] Table 78 shows the parameters of each lens of the optical lens of Example 47.

[0491] Table 78

[0492] Embodiment 48

[0493] The following reference Fig.48 Describe the optical lens according to Example 48 of the present application.

[0494] like Fig.48As shown, in this embodiment, the first lens L1 has negative optical power, its first side surface S1 is concave, and the second side surface S2 is a plane. The second lens L2 has positive optical power, its first side surface S3 is concave, and the second side surface S4 is convex. The third lens L3 has negative optical power, its first side surface S6 is convex, and the second side surface S7 is concave. The fourth lens L4 has positive optical power, its first side surface S8 is convex, and the second side surface S9 is convex. The fifth lens L5 has positive optical power, its first side surface S10 is convex, and the second side surface S11 is convex.

[0495] In this embodiment, the optical lens may further include a prism L6 located between the fifth lens L5 and the imaging surface (IMA), and the prism L6 has a first side surface S12 and a second side surface S13.

[0496] Table 79 shows the parameters of each lens of the optical lens of Example 48.

[0497] Table 79

[0498] Table 80 shows parameters that can be used for the aspheric mirror surface in this embodiment, wherein each aspheric surface shape can be defined by formula (1) given in the above embodiment 1.

[0499] Table 80

[0500] Embodiment 49

[0501] The following reference Fig.49 Describe the optical lens according to Example 49 of the present application.

[0502] like Fig.49 As shown, in this embodiment, the first lens L1 has negative focal power, its first side surface S1 is convex, and the second side surface S2 is concave. The second lens L2 has positive focal power, its first side surface S3 is concave, and the second side surface S4 is convex. The third lens L3 has negative focal power, its first side surface S6 is concave, and the second side surface S7 is concave. The fourth lens L4 has positive focal power, its first side surface S8 is convex, and the second side surface S9 is convex. The fifth lens L5 has positive focal power, its first side surface S10 is convex, and the second side surface S11 is convex.

[0503] Table 81 shows the parameters of each lens of the optical lens of Example 49.

[0504] Table 81

[0505] Table 82 shows parameters that can be used for the aspheric mirror surface in this embodiment, wherein each aspheric surface shape can be defined by formula (1) given in the above embodiment 1.

[0506] Table 82

[0507] Embodiment 50

[0508] The following reference Fig.50 Describe the optical lens according to Example 50 of the present application.

[0509] like Fig.50 As shown, in this embodiment, the first lens L1 has negative focal power, its first side surface S1 is concave, and its second side surface S2 is concave. The second lens L2 has positive focal power, its first side surface S3 is convex, and its second side surface S4 is convex. The third lens L3 has negative focal power, its first side surface S6 is convex, and its second side surface S7 is concave. The fourth lens L4 has positive focal power, its first side surface S8 is convex, and its second side surface S9 is convex. The fifth lens L5 has positive focal power, its first side surface S10 is convex, and its second side surface S11 is convex.

[0510] Table 83 shows the parameters of each lens of the optical lens of Example 50.

[0511] Table 83

[0512] Embodiment 51

[0513] The following reference Fig.51 Describe the optical lens according to Example 51 of the present application.

[0514] like Fig.51 As shown, in this embodiment, the first lens L1 has negative focal power, its first side surface S1 is convex, and the second side surface S2 is concave. The second lens L2 has positive focal power, its first side surface S3 is convex, and the second side surface S4 is convex. The third lens L3 has negative focal power, its first side surface S6 is concave, and the second side surface S7 is concave. The fourth lens L4 has positive focal power, its first side surface S8 is convex, and the second side surface S9 is convex. The fifth lens L5 has positive focal power, its first side surface S10 is concave, and the second side surface S11 is convex.

[0515] In this embodiment, the optical lens may further include a prism L6 located between the fifth lens L5 and the imaging surface (IMA), and the prism L6 has a first side surface S12 and a second side surface S13.

[0516] Table 84 shows the parameters of each lens of the optical lens of Example 51.

[0517] Table 84

[0518] Table 85 shows the parameters of the aspheric mirror surface that can be used in this embodiment, wherein each aspheric surface shape can be defined by the formula (1) given in the above embodiment 1.

[0519] Table 85

[0520] Embodiment 52

[0521] The following reference Fig.52 Describe the optical lens according to Example 52 of the present application.

[0522] like Fig.52 As shown, in this embodiment, the first lens L1 has negative optical power, its first side surface S1 is convex, and the second side surface S2 is concave. The second lens L2 has positive optical power, its first side surface S3 is concave, and the second side surface S4 is convex. The third lens L3 has negative optical power, its first side surface S6 is concave, and the second side surface S7 is concave. The fourth lens L4 has positive optical power, its first side surface S8 is convex, and the second side surface S9 is convex. The fifth lens L5 has positive optical power, its first side surface S10 is a plane, and the second side surface S11 is convex.

[0523] Table 86 shows the parameters of each lens of the optical lens of Example 52.

[0524] Table 86

[0525] Table 87 shows the parameters of the aspheric mirror surface that can be used in this embodiment, wherein each aspheric surface shape can be defined by the formula (1) given in the above embodiment 1.

[0526] Table 87

[0527] Embodiment 53

[0528] The following reference Fig.53 Describe the optical lens according to Example 53 of the present application.

[0529] like Fig.53As shown, in this embodiment, the first lens L1 has negative optical power, its first side surface S1 is concave, and the second side surface S2 is concave. The second lens L2 has positive optical power, its first side surface S3 is convex, and the second side surface S4 is convex. The third lens L3 has negative optical power, its first side surface S6 is concave, and the second side surface S7 is concave. The fourth lens L4 has positive optical power, its first side surface S8 is convex, and the second side surface S9 is convex. The fifth lens L5 has positive optical power, its first side surface S10 is convex, and the second side surface S11 is a plane.

[0530] Table 88 shows the parameters of each lens of the optical lens of Example 53.

[0531] Table 88

[0532] Embodiment 54

[0533] The following reference Fig.54 Describe the optical lens according to Example 54 of the present application.

[0534] like Fig.54 As shown, in this embodiment, the first lens L1 has negative focal power, its first side surface S1 is concave, and its second side surface S2 is concave. The second lens L2 has positive focal power, its first side surface S3 is convex, and its second side surface S4 is convex. The third lens L3 has negative focal power, its first side surface S6 is concave, and its second side surface S7 is concave. The fourth lens L4 has positive focal power, its first side surface S8 is convex, and its second side surface S9 is convex. The fifth lens L5 has positive focal power, its first side surface S10 is convex, and its second side surface S11 is concave.

[0535] In this embodiment, the optical lens may further include a prism L6 located between the fifth lens L5 and the imaging surface (IMA), and the prism L6 has a first side surface S12 and a second side surface S13.

[0536] Table 89 shows the parameters of each lens of the optical lens of Example 54.

[0537] Table 89

[0538] Table 90 shows parameters that can be used for the aspheric mirror surface in this embodiment, wherein each aspheric surface shape can be defined by formula (1) given in the above embodiment 1.

[0539] Table 90

[0540] According to the optical lenses of Examples 41 to 54 of the present application, the MTF value at a spatial frequency of 60lp / mm is in the range of 0.3 to 0.58; the telecentricity is between 1.69° and 2.7°, which is less than 3° overall; the optical distortion is in the range of 1.2% to 7.82%, and further, the optical distortion can be controlled in the range of 1.2% to 5.5%. It can be seen that the optical lenses provided in Examples 41 to 54 have high resolution and can achieve good imaging quality.

[0541] Tables 91, 92, 93, 94, 95 and 96 below show some parameters of the optical lenses of Examples 1 to 54, such as the focal length F, optical power φ, entrance pupil diameter ENPD, total optical length TTL, back focus length BFL, aperture diameter DST, maximum field of view FOV, arc value θ corresponding to the maximum field of view, and focal length values ​​of each lens, etc. The units of each focal length value, distance or aperture are millimeters (mm), and the unit of FOV is degrees (°).

[0542] Table 91

[0543] Table 92

[0544] Table 93

[0545] Table 94

[0546] Table 95

[0547] Table 96

[0548] In summary, the optical lenses of the above-mentioned Examples 1 to 54 respectively satisfy the conditional expressions shown in Table 97-1, Table 97-2, Table 98-1, Table 98-2, Table 99-1, Table 99-2, Table 100-1, Table 100-2, Table 101-1, Table 101-2, Table 102-1 and Table 101-2.

[0549] Table 97-1

[0550] Table 97-2

[0551] Table 98-1

[0552] Table 98-2

[0553] Table 99-1

[0554] Table 99-2

[0555] Table 100-1

[0556] Table 100-2

[0557] Table 101-1

[0558] Table 101-2

[0559] Table 102-1

[0560] Table 102-2

[0561] The present application also provides an electronic device, which may include an optical lens according to the above-mentioned embodiment of the present application and an imaging element for converting an optical image formed by the optical lens into an electrical signal. The electronic device may be an independent electronic device such as a detection distance camera, or an imaging module integrated in a detection distance device.

[0562] In addition, the electronic device may be an independent imaging device such as a vehicle-mounted camera, or an imaging module integrated in a driving assistance system.

[0563] In addition, the present application also provides an electronic device, which may include an optical lens and a light source according to the above-mentioned embodiment of the present application, the light source may be located on the second side of the optical lens, the light emitted by the light source is projected to the first side of the optical lens after passing through the optical lens, and an image or an illuminated area is formed on the first side. The electronic device may be an emission / projection / projection lens, the light from the light source is projected to the object side after passing through the optical lens, and an image or an illuminated area is formed on the object side.

[0564] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. An optical lens, characterized in that: The optical lens includes, in sequence from the first side to the second side along the optical axis: A first lens having negative optical power, wherein at least one of the first side surface and the second side surface is concave; a second lens having positive optical power, wherein at least one of the first side surface and the second side surface is convex; a third lens having optical power; a fourth lens having optical power; and a fifth lens having positive refractive power; Wherein, the number of lenses having optical power in the optical lens is five; The air interval d7 between the third lens and the fourth lens on the optical axis and the distance TL from the first side surface of the first lens to the second side surface of the fifth lens on the optical axis satisfy: d7 / TL≤0.035; The combined focal length F12 of the first lens and the second lens and the focal length F of the optical lens satisfy: F12 / F≤5; The focal length F5 of the fifth lens and the focal length F of the optical lens satisfy: F5 / F≤4.5; The focal length F of the optical lens and the maximum field of view FOV of the optical lens satisfy: 0.15mm≤F / FOV×1°≤5mm.

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

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

4. The optical lens according to claim 1, characterized in that: The third lens has positive power, and its first side surface is convex, and its second side surface is convex; or its first side surface is convex, and its second side surface is flat; or its first side surface is convex, and its second side surface is concave; or its first side surface is flat, and its second side surface is convex; or its first side surface is concave, and its second side surface is convex; Alternatively, the third lens has negative optical power, and its first side surface is concave and its second side surface is concave; or its first side surface is a plane and its second side surface is concave; or its first side surface is convex and its second side surface is concave.

5. The optical lens according to claim 1, characterized in that: The fourth lens has positive power, a first side surface is convex, and a second side surface is convex; Alternatively, the fourth lens has negative optical power, and its first side surface is concave, and the second side surface is concave; or its first side surface is concave, and the second side surface is a plane; or its first side surface is concave, and the second side surface is convex; or its first side surface is a plane, and the second side surface is concave; or its first side surface is convex, and the second side surface is concave.

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

7. The optical lens according to any one of claims 1 to 6, characterized in that: A maximum value Dfront of the maximum clear apertures of the optical surfaces of the first lens and the second lens and a maximum value Dback of the maximum clear apertures of the optical surfaces of the third lens, the fourth lens and the fifth lens satisfy: Dfront / Dback≤0.

9.

8. The optical lens according to any one of claims 1 to 6, characterized in that: The optical lens meets at least one of the following conditions: D / H / F×1mm≤0.35; TTL / F≤7.5; TTL / H / FOV×1°≤0.8; TTL / H / θ≤25; TTL / DMAX≤5; D / H / FOV×1°≤0.15; D / H / θ≤5; (F θ) / D≥0.35; Wherein, D is the maximum clear aperture of the first side surface of the first lens, H is the image height corresponding to the maximum field angle of the optical lens, F is the focal length of the optical lens, TTL is the total optical length of the optical lens, θ is the radian value corresponding to the maximum field angle of the optical lens, FOV is the maximum field angle of the optical lens, and DMAX is the maximum value of the maximum clear apertures of each optical surface of the first lens to the fifth lens.

9. The optical lens according to any one of claims 1 to 6, characterized in that: The optical lens meets at least one of the following conditions: BFL / TTL≥0.3; BFL / TL≥0.45; Among them, BFL is the back focal length of the optical lens, TTL is the total optical length of the optical lens, and TL is the distance from the first side surface of the first lens to the second side surface of the fifth lens on the optical axis.

10. The optical lens according to any one of claims 1 to 6, characterized in that: The optical lens satisfies at least one of the following conditions: 1≤F / H≤4; 45°≤(FOV F) / H≤95°;|(HF θ) / (F θ)|≤0.1;0.5≤(H / 2) / (F tan(θ / 2))≤1.8; Among them, F is the focal length of the optical lens, H is the image height corresponding to the maximum field of view angle of the optical lens, FOV is the maximum field of view angle of the optical lens, and θ is the radian value corresponding to the maximum field of view angle of the optical lens.

11. The optical lens according to any one of claims 1 to 6, characterized in that: The optical lens further includes an aperture; the optical lens satisfies at least one of the following conditions: F / ENPD≤2.8; F / ENPD / D×1mm≤0.8; DST / F≥0.35; Among them, F is the focal length of the optical lens, ENPD is the entrance pupil diameter of the optical lens, D is the maximum light clearance aperture of the first side surface of the first lens, and DST is the aperture aperture of the aperture.

12. The optical lens according to any one of claims 1 to 6, characterized in that: The optical lens satisfies at least one of the following conditions: 0.01≤T23 / F≤3; 0.005≤T23 / TL≤1; Wherein, T23 is the air gap between the second lens and the third lens on the optical axis, F is the focal length of the optical lens, and TL is the distance from the first side surface of the first lens to the second side surface of the fifth lens on the optical axis.

13. The optical lens according to any one of claims 1 to 6, characterized in that: The optical lens satisfies at least one of the following conditions: 0.2≤F345 / F≤5; 0.1≤φ3-5 / φ≤3; Among them, φ3-5 is the combined optical focal length of the third lens, the fourth lens and the fifth lens, φ is the optical focal length of the optical lens, F345 is the combined focal length of the third lens, the fourth lens and the fifth lens, and F is the focal length of the optical lens.

14. The optical lens according to any one of claims 1 to 6, characterized in that: The optical lens meets at least one of the following conditions: d6-10 / TL≤0.8; d6-10 / TTL≤0.5; d7 / TTL≤0.04; Among them, d6-10 is the distance from the first side surface of the third lens to the second side surface of the fifth lens on the optical axis, d7 is the air gap between the third lens and the fourth lens on the optical axis, TL is the distance from the first side surface of the first lens to the second side surface of the fifth lens on the optical axis, and TTL is the total optical length of the optical lens.

15. The optical lens according to any one of claims 1 to 6, characterized in that: The optical lens satisfies at least one of the following conditions: -65≤F1 / F≤0; -50≤F1 / BFL≤-0.15; Among them, F1 is the focal length of the first lens, F is the focal length of the optical lens, and BFL is the back focal length of the optical lens.

16. The optical lens according to any one of claims 1 to 6, characterized in that: The optical lens satisfies at least one of the following conditions: -5≤F1 / F2≤0; F2 / F≥1; Among them, F1 is the focal length of the first lens, F2 is the focal length of the second lens, and F is the focal length of the optical lens.

17. The optical lens according to any one of claims 1 to 6, characterized in that: A focal length F1 of the first lens and a combined focal length F345 of the third lens, the fourth lens and the fifth lens satisfy: -65≤F1 / F345≤0.

18. The optical lens according to any one of claims 1 to 6, characterized in that: The optical lens satisfies at least one of the following conditions: -5≤F / R1≤3; |F / R2|≤5; Wherein, F is the focal length of the optical lens, R1 is the radius of curvature of the first side surface of the first lens, and R2 is the radius of curvature of the second side surface of the first lens.

19. The optical lens according to any one of claims 1 to 6, characterized in that: A focal length F5 of the fifth lens and a curvature radius R1 of the first side surface of the first lens satisfy: -10≤F5 / R1≤3.

20. The optical lens according to any one of claims 1 to 6, characterized in that: The optical lens satisfies at least one of the following conditions: 0.3≤F3 / F≤4.5; 0.1≤|F4 / F|≤4; |max(F2, F3, F4, F5) / min(F2, F3, F4, F5)|≤280; Among them, F3 is the focal length of the third lens, F4 is the focal length of the fourth lens, F is the focal length of the optical lens, max(F2, F3, F4, F5) is the maximum focal length among the focal lengths of the second lens, the third lens, the fourth lens and the fifth lens, and min(F2, F3, F4, F5) is the minimum focal length among the focal lengths of the second lens, the third lens, the fourth lens and the fifth lens.

21. The optical lens according to any one of claims 1 to 6, characterized in that: The optical lens satisfies at least one of the following conditions: 0.3≤(T12+T23) / F≤2.2; (T12+T23) / BFL≤1.5; 0.05≤(T12+T23) / TL≤1; Among them, T12 is the air gap between the first lens and the second lens on the optical axis, T23 is the air gap between the second lens and the third lens on the optical axis, F is the focal length of the optical lens, BFL is the back focal length of the optical lens, and TL is the distance from the first side surface of the first lens to the second side surface of the fifth lens on the optical axis.

22. The optical lens according to any one of claims 1 to 6, characterized in that: The optical lens meets at least one of the following conditions: 45mm≤D9 BFL / H≤90mm; MD1 / MD2≤1.3; Among them, D9 is the maximum light-clearance aperture of the first side surface of the fifth lens, BFL is the back focal length of the optical lens, H is the image height corresponding to the maximum field of view angle of the optical lens, MD1 is the maximum light-clearance aperture of the first lens, and MD2 is the maximum light-clearance aperture of the second lens.

23. The optical lens according to any one of claims 1 to 6, characterized in that: A center thickness d3 of the second lens and a distance TL from the first side surface of the first lens to the second side surface of the fifth lens on the optical axis satisfy: d3 / TL≤0.

35.

24. The optical lens according to any one of claims 1 to 6, characterized in that: The focal length F of the optical lens and the curvature radius R6 of the second side surface of the third lens satisfy: -3.5≤F / R6≤5.

25. The optical lens according to any one of claims 1 to 6, characterized in that: The optical lens satisfies at least one of the following conditions: d10 / TL≤0.3; d10 / TTL≤0.2; Wherein, d10 is the center thickness of the fifth lens, TL is the distance from the first side surface of the first lens to the second side surface of the fifth lens on the optical axis, and TTL is the total optical length of the optical lens.

26. The optical lens according to any one of claims 1 to 6, characterized in that: The optical lens further includes a diaphragm; the optical lens satisfies at least one of the following conditions: 50°≤(FOV F) / H≤80°;2.5≤TTL / F≤6;TTL / H / FOV×1°≤0.5;TTL / H / θ≤20;2≤TTL / DMAX≤4.5;(F θ) / D≥0.5;D / H / FOV×1°≤0.1;D / H / θ≤4;D / H / F×1mm≤0.2;|(H-F θ) / (F θ)|≤0.08;BFL / TTL≥0.35;BFL / TL≥0.5;1.2≤F / H≤3;F / ENPD≤2.6;F / ENPD / D×1mm≤0.5;0.4≤DST / F≤1.2;0.6≤(H / 2) / (F tan(θ / 2))≤1.5;0.009≤T23 / TL≤0.7;0.3≤φ3-5 / φ≤1.5;d6-10 / TL≤0.65; d6 - 10 / TTL ≤ 0.4; d7 / TL ≤ 0.03; d7 / TTL ≤ 0.02; 50mm ≤ D9 BFL / H ≤ 85mm; -60 ≤ F1 / F ≤ 0; -5 ≤ F1 / F ≤ 0; -50 ≤ F1 / F345 ≤ 0; |F / R2| ≤ 3; -3 ≤ F1 / F2 ≤ 0; |max(F2, F3, F4, F5) / min(F2, F3, F4, F5)| ≤ 260; 0.1 ≤ (T12 + T23) / TL ≤ 0.8; 0.35 ≤ (T12 + T23) / TL ≤ 0.7; 0.5 ≤ F345 / F ≤ 3; 1 ≤ F345 / F ≤ 2.5; F12 / F ≤ 4; F12 / F ≤ 0; MD1 / MD2 ≤ 1.2; D front / D rear ≤ 0.8; d3 / TL ≤ 0.3; 0.12 ≤ (T12 + T23) / BFL ≤ 1.2; -40 ≤ F1 / BFL ≤ -0.25; 0.6 ≤ F3 / F ≤ 3; 0.5 ≤ |F4 / F| ≤ 3; F5 / F ≤ 4; d10 / TL ≤ 0.2; d10 / TTL ≤ 0.12; 0.2mm ≤ F / FOV × 1° ≤ 3mm; 0.2mm ≤ F / FOV × 1° ≤ 1.5mm; 0.02 ≤ T23 / F ≤ 1.5; -3 ≤ F / R1 ≤ 1; -3.5 ≤ F / R1 ≤ 0; -2 ≤ F / R6 ≤ 3; 0 ≤ F / R6 ≤ 4; 0.4 ≤ (T12 + T23) / F ≤ 2.0; 0.8 ≤ (T12 + T23) / F ≤ 1.9; -9 ≤ F5 / R1 ≤ 1.5; -10 ≤ F5 / R1 ≤ 0; Wherein, FOV is the maximum field of view of the optical lens, F is the focal length of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, TTL is the total optical length of the optical lens, θ is the arc value corresponding to the maximum field of view of the optical lens, D is the maximum clear aperture of the first side surface of the first lens, DMAX is the maximum value of the maximum clear aperture of each optical surface from the first lens to the fifth lens, BFL is the back focal length of the optical lens, TL is the distance from the first side surface of the first lens to the second side surface of the fifth lens on the optical axis, ENPD is the entrance pupil diameter of the optical lens, DST is the aperture diameter of the aperture, φ3-5 is the combined focal length of the third lens, the fourth lens and the fifth lens, φ is the focal length of the optical lens, d6-10 is the distance from the first side surface of the third lens to the second side surface of the fifth lens on the optical axis, d7 is the air gap between the third lens and the fourth lens on the optical axis, D9 is the maximum aperture of the first side surface of the fifth lens, 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, and F345 is the focal length of the fifth lens. is the combined focal length of the third lens, the fourth lens and the fifth lens, F12 is the combined focal length of the first lens and the second lens, max(F2, F3, F4, F5) is the maximum focal length among the focal lengths of the second lens, the third lens, the fourth lens and the fifth lens, min(F2, F3, F4, F5) is the minimum focal length among the focal lengths of the second lens, the third lens, the fourth lens and the fifth lens, T12 is the air spacing between the first lens and the second lens on the optical axis, T23 is the air spacing between the second lens and the The air spacing of the third lens on the optical axis, MD1 is the maximum clear aperture of the first lens, MD2 is the maximum clear aperture of the second lens, Dfront is the maximum value of the maximum clear apertures of each optical surface of the first lens and the second lens, Dback is the maximum value of the maximum clear apertures of each optical surface of the third lens, the fourth lens and the fifth lens, d3 is the center thickness of the second lens, d10 is the center thickness of the fifth lens, R1 is the curvature radius of the first side surface of the first lens, R2 is the curvature radius of the second side surface of the first lens, and R6 is the curvature radius of the second side surface of the third lens.

27. The optical lens according to any one of claims 1 to 6, characterized in that: The optical lens further includes a diaphragm; the optical lens satisfies at least one of the following conditions: 55.985°≤(FOV F) / H≤60.769°;3.542≤TTL / F≤5.395;0.223≤TTL / H / FOV×1°≤0.316;12.76≤TTL / H / θ≤18.119; 2.932≤TTL / DMAX≤4.033;0.668≤(F θ) / D≤1.034;0.033≤D / H / FOV×1°≤0.056;1.878≤D / H / θ≤3.191;0.065≤D / H / F×1mm≤0.117;0.0003≤|(H-F θ) / (F θ)|≤0.057;0.379≤BFL / TTL≤0.49;0.61≤BFL / TL≤0.962;1.561≤F / H≤2.168;1.9≤F / ENPD≤2.5;0.176≤F / ENPD / D≤0.322;0.565≤DST / F≤0.913;0.921≤(H / 2) / (F tan(θ / 2))≤1.005;0.019≤T23 / TL≤0.493; 0.49 ≤ φ3 - 5 / φ ≤ 1.195; 0.222 ≤ d6 - 10 / TL ≤ 0.569; 0.133 ≤ d6 - 10 / TTL ≤ 0.3; 0 ≤ d7 / TL ≤ 0.022; 0 ≤ d7 / TTL ≤ 0.014; 51.797 mm ≤ D9 BFL / H ≤ 80.635 mm; -55.98 ≤ F1 / F ≤ -0.655; 1.342 ≤ F2 / F ≤ 424.829; -45.283 ≤ F1 / F345 ≤ -0.394; 0 ≤ |F / R2| ≤ 1.971; -1.239 ≤ F1 / F2 ≤ -0.087; 1.052 ≤ |max(F2, F3, F4, F5) / min(F2, F3, F4, F5)| ≤ 240.026; 0.133 ≤ (T12 + T23) / TL ≤ 0.645; 0.836 ≤ F345 / F ≤ 2.042; -88.18 ≤ F12 / F ≤ 3.211; 0.595 ≤ MD1 / MD2 ≤ 1.19; 0.48 ≤ D front / D rear ≤ 0.875; 0.003 ≤ d3 / TL ≤ 0.225; 0.184 ≤ (T12 + T23) / BFL ≤ 0.953; -36 ≤ F1 / BFL ≤ -0.337; 1.062 ≤ |F3 / F| ≤ 2.314; 0.938 ≤ |F4 / F| ≤ 2.28; 1.09 ≤ F5 / F ≤ 3.766; 0.058 ≤ d10 / TL ≤ 0.216; 0.036≤d10 / TTL≤0.114;0.32mm≤F / FOV×1°≤0.624mm;0.037≤T23 / F≤1.168;-2.645≤F / R1≤0.649;-1.564≤F / R6≤1.221;0.448≤(T12+T23) / F≤1.836;-7.98≤F5 / R1≤1.104; Wherein, FOV is the maximum field of view of the optical lens, F is the focal length of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, TTL is the total optical length of the optical lens, θ is the arc value corresponding to the maximum field of view of the optical lens, D is the maximum clear aperture of the first side surface of the first lens, DMAX is the maximum value of the maximum clear aperture of each optical surface from the first lens to the fifth lens, BFL is the back focal length of the optical lens, TL is the distance from the first side surface of the first lens to the second side surface of the fifth lens on the optical axis, ENPD is the entrance pupil diameter of the optical lens, DST is the aperture diameter of the aperture, φ3-5 is the combined focal length of the third lens, the fourth lens and the fifth lens, φ is the focal length of the optical lens, d6-10 is the distance from the first side surface of the third lens to the second side surface of the fifth lens on the optical axis, d7 is the air gap between the third lens and the fourth lens on the optical axis, D9 is the maximum aperture of the first side surface of the fifth lens, 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, and F345 is the focal length of the fifth lens. is the combined focal length of the third lens, the fourth lens and the fifth lens, F12 is the combined focal length of the first lens and the second lens, max(F2, F3, F4, F5) is the maximum focal length among the focal lengths of the second lens, the third lens, the fourth lens and the fifth lens, min(F2, F3, F4, F5) is the minimum focal length among the focal lengths of the second lens, the third lens, the fourth lens and the fifth lens, T12 is the air spacing between the first lens and the second lens on the optical axis, T23 is the air spacing between the second lens and the The air spacing of the third lens on the optical axis, MD1 is the maximum clear aperture of the first lens, MD2 is the maximum clear aperture of the second lens, Dfront is the maximum value of the maximum clear apertures of each optical surface of the first lens and the second lens, Dback is the maximum value of the maximum clear apertures of each optical surface of the third lens, the fourth lens and the fifth lens, d3 is the center thickness of the second lens, d10 is the center thickness of the fifth lens, R1 is the curvature radius of the first side surface of the first lens, R2 is the curvature radius of the second side surface of the first lens, and R6 is the curvature radius of the second side surface of the third lens.

28. An electronic device, characterized in that: The optical lens according to any one of claims 1 to 27, further comprising at least one of the following: An imaging element, used for converting an optical image or optical information formed by the optical lens into an electrical signal, wherein the imaging element is located on the second side of the optical lens, and light from the first side of the optical lens forms an image on the second side after passing through the optical lens; or A light source is located on the second side of the optical lens, and light emitted by the light source is projected onto the first side of the optical lens after passing through the optical lens, thereby forming an image or illuminating an area on the first side.

Images