Optical Lens and Electronic Device

Abstract

The present application discloses an optical lens and an electronic device. The optical lens sequentially includes, along the optical axis, from the first side to the second side: a first lens with a negative focal power, at least one of the first side surface and the second side surface thereof being a concave surface; a second lens with a positive focal power, at least one of the first side surface and the second side surface thereof being a convex surface; a third lens with a focal power; a fourth lens with a focal power; and a fifth lens with a positive focal power; wherein, the number of lenses with a focal power in the optical lens is five; the optical lens satisfies: d7 / TL ≤ 0.035; F12 / F ≤ 5; F5 / F ≤ 4.5; 0.15 mm ≤ F / FOV × 1° ≤ 5 mm.

Description

Technical Field

[0001] This 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 automotive assisted driving technology, optical lenses have been increasingly widely used in automobiles, such as in-vehicle optical lenses or projection lenses.

[0003] The projection lens is an important part of a projector and a PGU (Picture Generation Unit). Currently, with the rapid development of DMD (Digital Micromirror Device) and LCOS (Liquid Crystal On Silicon) chip technologies, the requirements for projection lenses are also getting higher and higher. To meet the increasingly high performance requirements of in-vehicle applications, in-vehicle projection lenses are also continuously developing in the directions of small size, high resolution, long back focal length, large field of view, and small telecentricity. Summary of the Invention

[0004] On the one hand, this application provides an optical lens. The optical lens sequentially includes, along the optical axis, from the first side to the second side: a first lens with a negative optical power, at least one of the first side and the second side of which is a concave surface; a second lens with a positive optical power, at least one of the first side and the second side of which is a convex surface; a third lens with an optical power; a fourth lens with an optical power; and a fifth lens with a positive optical power. Wherein, the number of lenses with optical power in the optical lens is five. 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 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: 0.15 mm ≤ F / FOV × 1° ≤ 5 mm.

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

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

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

[0008] Alternatively, the third lens has a negative optical power, its first side is concave, and the second side is concave; or the first side is flat, and the second side is concave; or the first side is convex, and the second side is concave.

[0009] In some embodiments, the fourth lens has a positive optical power, its first side is convex, and the second side is convex;

[0010] Alternatively, the fourth lens has a negative optical power, its first side is concave, and the second side is concave; or the first side is concave, and the second side is flat; or the first side is concave, and the second side is convex; or the first side is flat, and the second side is concave; or the first side is convex, and the second side is concave.

[0011] In some embodiments, the first side of the fifth lens is convex, and the second side is convex; or the first side is convex, and the second side is flat; or the first side is convex, and the second side is concave; or the first side is flat, and the second side is convex; or the first side is concave, and the second side is convex.

[0012] In some embodiments, the maximum value Dfront of the maximum clear aperture of each optical surface of the first lens and the second lens, and the maximum value Dback of the maximum clear aperture of each optical surface of the third lens, the fourth lens, and the fifth lens satisfy: Dfront / Dback ≤ 0.9.

[0013] 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; where D is the maximum clear aperture of the first side of the first lens, H is the image height corresponding to the maximum field of view 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 of view angle of the optical lens, FOV is the maximum field of view angle of the optical lens, and DMAX is the maximum value among the maximum clear apertures of the optical surfaces of the first lens to the fifth lens.

[0014] In some embodiments, the optical lens satisfies at least one of the following conditions: BFL / TTL ≥ 0.3; BFL / TL ≥ 0.45; where 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 on the optical axis from the first side of the first lens to the second side of the fifth lens.

[0015] 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°; |(H - F θ) / (F θ)| ≤ 0.1; 0.5 ≤ (H / 2) / (F tan(θ / 2)) ≤ 1.8; where 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.

[0016] In some embodiments, the optical lens further includes a diaphragm; 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; where 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 of the first lens, and DST is the diaphragm aperture of the diaphragm.

[0017] In some embodiments, the optical lens satisfies at least one of the following conditions: 0.01 ≤ T23 / F ≤ 3; 0.005 ≤ T23 / TL ≤ 1; where T23 is the air gap on the optical axis between the second lens and the third lens, F is the focal length of the optical lens, and TL is the distance on the optical axis from the first side of the first lens to the second side of the fifth lens.

[0018] 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; where φ3 - 5 is the combined optical power of the third lens, the fourth lens, and the fifth lens, φ is the optical power 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.

[0019] 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; where d6-10 is the distance on the optical axis from the first side of the third lens to the second side of the fifth lens, d7 is the air gap on the optical axis between the third lens and the fourth lens, TL is the distance on the optical axis from the first side of the first lens to the second side of the fifth lens, and TTL is the overall optical length of the optical lens.

[0020] In some embodiments, the optical lens satisfies at least one of the following conditions: -65 ≤ F1 / F ≤ 0; -50 ≤ F1 / BFL ≤ -0.15; where 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.

[0021] In some embodiments, the optical lens satisfies at least one of the following conditions: -5 ≤ F1 / F2 ≤ 0; F2 / F ≥ 1; where 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.

[0022] In some embodiments, the focal length F1 of the first lens and the combined focal length F345 of the third, fourth, and fifth lenses satisfy: -65 ≤ F1 / F345 ≤ 0.

[0023] In some embodiments, the optical lens satisfies at least one of the following conditions: -5 ≤ F / R1 ≤ 3; |F / R2| ≤ 5; where F is the focal length of the optical lens, R1 is the radius of curvature of the first side of the first lens, and R2 is the radius of curvature of the second side of the first lens.

[0024] In some embodiments, the focal length F5 of the fifth lens and the radius of curvature R1 of the first side of the first lens satisfy: -10 ≤ F5 / R1 ≤ 3.

[0025] 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; where 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, third, fourth, and fifth lenses, and min(F2, F3, F4, F5) is the minimum focal length among the focal lengths of the second, third, fourth, and fifth lenses.

[0026] 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; where 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 on the optical axis from the first side of the first lens to the second side of the fifth lens.

[0027] In some embodiments, the optical lens satisfies at least one of the following conditions: 45mm ≤ D9 BFL / H ≤ 90mm; MD1 / MD2 ≤ 1.3; where D9 is the maximum clear aperture of the first side 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 clear aperture of the first lens, and MD2 is the maximum clear aperture of the second lens.

[0028] In some embodiments, the central thickness d3 of the second lens and the distance TL on the optical axis from the first side of the first lens to the second side of the fifth lens satisfy: d3 / TL ≤ 0.35.

[0029] In some embodiments, the focal length F of the optical lens and the radius of curvature R6 of the second side of the third lens satisfy: -3.5 ≤ F / R6 ≤ 5.

[0030] In some embodiments, the optical lens satisfies at least one of the following conditions: d10 / TL ≤ 0.3; d10 / TTL ≤ 0.2; where d10 is the central thickness of the fifth lens, TL is the distance on the optical axis from the first side of the first lens to the second side of the fifth lens, and TTL is the overall optical length of the optical lens.

[0031] In some embodiments, 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 ≤ 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 angle 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 angle of the optical lens, TTL is the total optical length of the optical lens, θ is the radian value corresponding to the maximum field of view angle of the optical lens, D is the maximum clear aperture of the first side of the first lens, DMAX is the maximum value among 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 on the optical axis from the first side of the first lens to the second side of the fifth lens, ENPD is the entrance pupil diameter of the optical lens, DST is the aperture diameter of the diaphragm, φ3-5 is the combined focal power of the third lens, the fourth lens and the fifth lens, φ is the focal power of the optical lens, d6-10 is the distance on the optical axis from the first side of the third lens to the second side of the fifth lens, d7 is the air space on the optical axis between the third lens and the fourth lens, D9 is the maximum clear aperture of the first side 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, 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 space on the optical axis between the first lens and the second lens, T23 is the air space on the optical axis between the second lens and the third lens, 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 among the maximum clear apertures of each optical surface of the first lens and the second lens, Dback is the maximum value among the maximum clear apertures of each optical surface of the third lens, the fourth lens and the fifth lens, d3 is the central thickness of the second lens, d10 is the central thickness of the fifth lens, R1 is the radius of curvature of the first side of the first lens, R2 is the radius of curvature of the second side of the first lens, R6 is the radius of curvature of the second side of the third lens.

[0032] In some embodiments, 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; 51.797mm ≤ 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 ≤ 1104; where FOV is the maximum field of view angle 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 angle of the optical lens, TTL is the total optical length of the optical lens, θ is the radian value corresponding to the maximum field of view angle of the optical lens, D is the maximum clear aperture of the first side of the first lens, DMAX is the maximum value among 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 on the optical axis from the first side of the first lens to the second side of the fifth lens, ENPD is the entrance pupil diameter of the optical lens, DST is the aperture diameter of the diaphragm, φ3-5 is the combined focal power of the third lens, the fourth lens and the fifth lens, φ is the focal power of the optical lens, d6-10 is the distance on the optical axis from the first side of the third lens to the second side of the fifth lens, d7 is the air space on the optical axis between the third lens and the fourth lens, D9 is the maximum clear aperture of the first side 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, 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 space on the optical axis between the first lens and the second lens, T23 is the air space on the optical axis between the second lens and the third lens, 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 among the maximum clear apertures of each optical surface of the first lens and the second lens, Dback is the maximum value among the maximum clear apertures of each optical surface of the third lens, the fourth lens and the fifth lens, d3 is the central thickness of the second lens, d10 is the central thickness of the fifth lens, R1 is the radius of curvature of the first side of the first lens, R2 is the radius of curvature of the second side of the first lens, R6 is the radius of curvature of the second side of the third lens.

[0033] On the other hand, the present application provides an electronic device. The electronic device includes the optical lens provided according to the present application, and further includes at least one of the following: an imaging element, configured to convert the optical image or optical information formed by the optical lens into an electrical signal, the imaging element being located on the second side of the optical lens, and the light rays from the first side of the optical lens are imaged on the second side after passing through the optical lens; or, a light source, the light source being located on the second side of the optical lens, and the light rays emitted by the light source are projected onto the first side of the optical lens after passing through the optical lens, to form an image or illuminate an area on the first side.

[0034] 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.

[0035] 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

[0036] 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:

[0037] 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;

[0038] 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;

[0039] Figures 28 to 40 Schematic structural diagrams of optical lenses according to Embodiments 28 to 40 of the present application are respectively shown;

[0040] Figures 41 to 54 Schematic structural diagrams of optical lenses according to Embodiments 41 to 54 of the present application are respectively shown. Detailed implementation manners

[0041] 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 the exemplary embodiments of the present application, and do not limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0042] It should be noted that in this specification, the expressions such as first, second, and third are only used to distinguish one feature from another feature, and do not represent any limitation on the feature. Therefore, without departing from the teachings of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0043] In the drawings, for the sake of convenience of illustration, the thickness, size, and shape of the lens have been slightly exaggerated. Specifically, the spherical or aspherical shapes shown in the drawings are shown by way of example. That is, the spherical or aspherical shapes are not limited to the spherical or aspherical shapes shown in the drawings. The drawings are only examples and are not drawn strictly to scale.

[0044] 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.

[0045] It should be understood that the optical lens provided in this application can be used for imaging, projection, and lidar lenses. When the optical lens provided in this application is used as an imaging lens or the receiving-end lens of lidar, the "first side" involved in this article can refer to the object side, and the "second side" can refer to the image side. Light from the object side can be imaged on the image side, and an imaging surface can be provided on the second side of the optical lens. Among them, the imaging lens can be, for example, a vehicle-mounted camera, an infrared camera, a drone camera, a night vision camera, a security monitoring camera, etc. When the optical lens provided in this application is used as a projection lens or the transmitting-end lens of radar, the "first side" involved in this article can refer to the object side, and the "second side" can refer to the light source side. A light source can be provided on the second side of the optical lens. The light source can provide light with or without image information. The light from the light source side is projected onto the target area on the first side (object side) after passing through the optical lens. For example, an image can be formed on the first side or an area can be illuminated.

[0046] It should also be understood that the terms "comprise", "comprising", "have", "include", and / or "including", 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 an expression such as "at least one of..." appears after a list of listed features, it modifies the entire list of listed features, rather than individual elements in the list. In addition, when describing the embodiments of this application, the use of "may" means "one or more embodiments of this application". And the term "exemplary" is intended to refer to an example or illustration.

[0047] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It should also be understood that terms (such as those defined in a common dictionary) should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0048] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will refer to the drawings and combine the embodiments to detail this application.

[0049] The features, principles, and other aspects of this application will be described in detail below.

[0050] In an exemplary embodiment, the optical lens may include, for example, five lenses with optical power, namely, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. These five lenses are arranged in sequence along the optical axis from the first side to the second side.

[0051] 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 device (CMOS).

[0052] In an exemplary embodiment, the first lens may have a negative focal power. The negative focal power of the first lens serves to diffuse light rays, collecting as much light as possible from a large field of view and guiding it into the subsequent optical system to achieve a large field of view (FOV).

[0053] In an exemplary embodiment, both the first side and the second side of the first lens may be concave. The concave first side of the first lens allows large-angle light rays to enter the system and gradually transition to the second lens, which helps relieve the correction pressure on the aberration of large-angle light rays for the second lens and enables a small aperture and a small volume. The concave second side of the first lens converges the light rays to the second lens, reducing sensitivity and facilitating the subsequent lens group in improving the resolution.

[0054] In an exemplary embodiment, the first side of the first lens may be concave and the second side may be flat. The concave first side of the first lens is conducive to receiving large-angle light beams and achieving a small aperture and a small volume. The flat second side of the first lens serves to transition the light rays to the second lens.

[0055] In an exemplary embodiment, the first side of the first lens may be concave and the second side may be convex. The concave first side of the first lens is conducive to converging the received large-angle light rays as much as possible within the lens and achieving a small aperture and a small volume. The convex second side of the first lens serves to smoothly transition the light rays diverged by the first side to the second lens, reducing the field of view entering the second lens and facilitating the subsequent lens group in improving the resolution.

[0056] In an exemplary embodiment, the first side of the first lens may be flat and the second side may be concave. The flat first side of the first lens serves to transition the light rays to the second lens. The concave second side of the first lens slightly converges the light rays transitioned by the first side to the second lens, facilitating the smooth entry of light into the subsequent group and improving the resolution.

[0057] In an exemplary embodiment, the first side of the first lens may be convex and the second side may be concave. The convex first side of the first lens is conducive to converging light rays to achieve a large field of view, and the convex side close to the object surface can also play a role in dust and water protection. The concave second side of the first lens converges the light rays to the second lens, reducing the field of view entering the second lens and facilitating the subsequent lens group in improving the resolution.

[0058] In an exemplary embodiment, the second lens may have a positive focal power. The positive focal power of the second lens converges light rays and can cooperate with the first lens to converge and compress the diverging light rays with a large field of view to the rear group, achieving a large field of view while improving the edge resolution.

[0059] In an exemplary embodiment, the first side surface of the second lens may be concave, and the second side surface may be convex. The concave first side surface of the second lens diffuses the light rays converged by the front group to the rear group slightly and realizes a small aperture and a small volume. The convex second side surface of the second lens converges the light rays and makes a smooth transition to the third lens, and can slightly correct the field aberration caused by the first lens, relieving the resolution pressure of the subsequent lenses. In addition, the concave-convex shape setting of the second lens makes the light rays of the front and rear groups smooth (i.e., the light ray transition from the second lens to the third lens is smooth), which is beneficial to reducing the system sensitivity.

[0060] In an exemplary embodiment, the first side surface of the second lens may be convex, and the second side surface may be convex. The convex first side surface of the second lens converges the light rays incident on the first lens, and can slightly reduce the field aberration caused by the large-angle light rays emitted by the first lens at the same time. The convex second side surface of the second lens makes the light rays converged by the first side surface of the second lens transition to the third lens smoothly, thereby reducing the system sensitivity.

[0061] In an exemplary embodiment, the first side surface of the second lens may be convex, and the second side surface may be flat. The convex first side surface of the second lens converges the light rays incident on the first lens, and can slightly reduce the field aberration caused by the large-angle light rays emitted by the first lens at the same time. The flat second side surface of the second lens makes the light rays transition to the third lens.

[0062] In an exemplary embodiment, the first side surface of the second lens may be flat, and the second side surface may be convex. The flat first side surface of the second lens serves to transition the light rays to the second side surface of the second lens. The convex second side surface of the second lens can smoothly transition the light rays transmitted through the first side surface of the second lens to the third lens, and can relieve the correction pressure of the third lens on spherical aberration and coma.

[0063] In an exemplary embodiment, the first side surface of the second lens may be convex, and the second side surface may be concave. The convex first side surface of the second lens serves to converge the light incident on the first lens and, at the same time, corrects the axial aberration of the light incident at a large angle. The concave second side surface of the second lens can further converge the light converged by the first side surface of the second lens onto the third lens, greatly reducing the field of view of the light entering the third lens and reducing the axial aberration caused by the large field of view, which is beneficial for reducing the pressure on the subsequent lens group to improve resolution. In addition, the convex-concave shape of the second lens enables the light of the front and rear groups to be stable (i.e., the light transition from the second lens to the third lens is stable), which is beneficial for reducing the system sensitivity.

[0064] In an exemplary embodiment, the third lens may have a negative optical power. The negative optical power of the third lens is beneficial for the light to be appropriately diffused, making the light trend more stable and beneficial for lengthening the back focal length.

[0065] In an exemplary embodiment, both the first side surface and the second side surface of the third lens may be concave. The first side surface of the third lens has a meniscus shape concave toward the first side. Its first side surface being concave can make the light trend transition smoothly and, at the same time, mitigate the spherical aberration and lateral chromatic aberration caused by the first lens and the second lens. The second side surface of the third lens is concave, which can further diverge the light diverged by the first side surface of the third lens onto the fourth lens, playing a role in smoothly transitioning the light, reducing the system sensitivity, and at the same time reducing the correction pressure of the subsequent lens group for axial chromatic aberration.

[0066] In an exemplary embodiment, the first side surface of the third lens may be flat, and the second side surface may be concave. The flat first side surface of the third lens serves to transition the light to the second side surface of the third lens. The concave second side surface of the third lens serves to diverge the light transitioned by 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 is beneficial for achieving a long back focal length.

[0067] In an exemplary embodiment, the first side surface of the third lens may be convex, and the second side surface may be concave. The convex first side surface of the third lens serves to converge the light incident on the second lens and, at the same time, corrects the axial aberration of the light incident at a large angle. The concave second side surface of the third lens 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 enables the light of the front and rear groups to be stable (i.e., the light transition from the third lens to the fourth lens is stable), which is beneficial for reducing the system sensitivity.

[0068] In an exemplary embodiment, the third lens may have a positive optical power. The positive optical power of the third lens is beneficial to converging the light rays emitted by the first lens and the second lens, reducing the field angle of view of the light rays entering the rear lens group, and thus helping to correct the field aberration.

[0069] In an exemplary embodiment, both the first side and the second side of the third lens may be convex surfaces. The first side of the third lens is a convex surface, which converges the light rays incident on the second lens, reduces the field angle of view of the incident light, and corrects the axial aberration of the large-angle incident light rays at the same time. The second side of the third lens is a convex surface, which can converge the light rays converged by the first side of the third lens and emit them to the fourth lens, greatly reducing the field angle of view of the front-group incident light rays, correcting the axial aberration and improving the resolution, and reducing the correction pressure of the rear lens group on the axial aberration.

[0070] In an exemplary embodiment, the first side of the third lens may be a flat surface, and the second side may be a convex surface. The first side of the third lens is a flat surface, which serves to transition the light rays to the second side of the third lens. The second side of the third lens is a convex surface, which can converge the light rays transitioned by the first side of the third lens to the fourth lens, reducing the angle of the light rays emitted by the second lens and having a certain correction ability for the field aberration.

[0071] In an exemplary embodiment, the first side of the third lens may be a concave surface, and the second side may be a convex surface. The first side of the third lens is a concave surface, which can diverge the light rays emitted by the second lens to the second side of the third lens, slow down the light ray trend, and reduce the system sensitivity. The second side of the third lens is a convex surface, which converges the light rays diverged by the first side of the third lens to the fourth lens, can smoothly transition the light ray trend, reduce the deflection burden of the rear group, and offset the opposite-sign aberration caused by the front group of lenses. In addition, the convex-concave shape setting of the third lens can make the front and rear group of light rays stable (that is, the light ray transition from the third lens to the fourth lens is stable), which is beneficial to reducing the system sensitivity.

[0072] In an exemplary embodiment, the first side of the third lens may be a convex surface, and the second side may be a flat surface. The first side of the third lens is a convex surface, which converges the light rays incident on the second lens and can share the correction pressure of the rear lens group for the field aberration. The second side of the third lens is a flat surface, which serves to transition the light rays to the fourth lens.

[0073] In an exemplary embodiment, the first side of the third lens may be a convex surface, and the second side may be a concave surface. The first side of the third lens is a convex surface, which converges the light rays emitted by the second lens and reduces the axial aberration of the large-field light rays. The second side of the third lens is a concave surface, which diverges the light rays converged by the first side of the third lens to the fourth lens, smoothly transitions the light ray trend, and can correct the spherical aberration and axial aberration in combination with the rear lens group, thereby reducing the aberration correction pressure of the rear lens group.

[0074] In an exemplary embodiment, the fourth lens may have a positive optical power, and both its first side and second side may be convex. The positive optical power of the fourth lens is beneficial for converging the light rays emitted by the third lens. When the optical power of the third lens is negative, matching with the third lens helps correct the field aberration. Both the first side and second side of the fourth lens being convex can strengthen the converging effect, make the light ray trend of the rear group flat, and is beneficial for achieving a small CRA.

[0075] In an exemplary embodiment, the fourth lens may have a negative optical power. When the optical power of the third lens is positive, the negative optical power of the fourth lens, with the positive and negative matching of the optical powers of the third lens, can greatly correct the axial chromatic aberration, and at the same time smoothly transition the light rays to the fifth lens, reducing the pressure on the fifth lens behind to converge the light rays, making the light ray trend gentle, thereby helping to achieve a long back focal length and improve the resolution.

[0076] In an exemplary embodiment, the first side of the fourth lens may be concave, and the second side may be convex. The first side of the fourth lens has a meniscus shape concave towards the first side. Its first side being concave can make the light ray trend transition smoothly and correct the lateral chromatic aberration of the system; the second side of the fourth lens being convex can converge the light rays to the fifth lens, greatly reducing the light field, reducing the correction pressure of the fifth lens on the field aberration, and at the same time being beneficial for achieving a small CRA and a long back focal length.

[0077] In an exemplary embodiment, the first side of the fourth lens may be concave, and the second side may be flat. The first side of the fourth lens being concave makes the light ray trend transition smoothly, and at the same time, matching with the positive optical power of the third lens can correct the lateral chromatic aberration of the system. The second side of the fourth lens being flat serves to transition the light rays to the fifth lens.

[0078] In an exemplary embodiment, the first side of the fourth lens may be concave, and the second side may be concave. The first side of the fourth lens has a meniscus shape concave towards the first side. Its first side being concave can make the light ray trend transition smoothly and correct the lateral chromatic aberration of the system; the second side of the fourth lens being concave can further diverge the light rays diverged by the first side of the fourth lens to the fifth lens, making the light ray trend transition smoothly, and combined with the rear group of lenses can correct the spherical aberration and axial aberration.

[0079] In an exemplary embodiment, the first side of the fourth lens may be flat, and the second side may be concave. The first side of the fourth lens being flat serves to transition the light rays to the second side of the fourth lens. The second side of the fourth lens being concave diverges the light rays converged by the third lens to the fifth lens, and at the same time, the positive and negative optical power matching with the third lens can achieve the correction of the axial aberration, make the light ray trend transition smoothly, and combined with the rear group of lenses can correct the spherical aberration and axial aberration.

[0080] In an exemplary embodiment, the first side surface of the fourth lens may be convex, and the second side surface may be concave. The first side surface of the fourth lens is convex, converging the light rays emitted by the third lens to reduce the axial aberration of the light rays in the large field of view. The second side surface of the fourth lens is concave, diverging the light rays converged by the first side surface of the fourth lens to the fifth lens, gently transitioning the light ray trend, and combining with the rear group of lenses to correct spherical aberration and axial aberration in combination, improving the resolution.

[0081] In an exemplary embodiment, the fifth lens may have a positive optical power. The optical power of the fifth lens is positive, receiving the light rays emitted by the fourth lens and converging them, enabling the light rays to smoothly transition to the image plane, which is beneficial for improving the resolution.

[0082] In an exemplary embodiment, the first side surface of the fifth lens may be convex, and the second side surface may be concave. The first side surface of the fifth lens is convex, further converging the light rays emitted by the fourth lens to make the light rays smoothly transition, and assisting the fourth lens to jointly achieve a small CRA. The second side surface of the fifth lens is concave, which is beneficial for the light rays to smoothly transition.

[0083] In an exemplary embodiment, the first side surface of the fifth lens may be convex, and the second side surface may be convex. The first side surface of the fifth lens is convex, converging the light rays emitted by the fourth lens to make the light rays smoothly transition, and assisting the fourth lens to jointly achieve a small CRA. The second side surface of the fifth lens is convex, further converging the light rays and correcting the aberration in the large field of view, improving the resolution, and achieving a long back focal length.

[0084] In an exemplary embodiment, the first side surface of the fifth lens may be planar, and the second side surface may be convex. The first side surface of the fifth lens is planar, serving to transition the light rays to the second side surface of the fifth lens. The second side surface of the fifth lens is convex, further converging the light rays and correcting the aberration in the large field of view, improving the resolution, and achieving a long back focal length.

[0085] In an exemplary embodiment, the first side surface of the fifth lens may be concave, and the second side surface may be convex. The first side surface of the fifth lens has a meniscus shape concave toward the first side, and its first side surface is concave, which can make the light ray trend smoothly transition to the second side surface of the fifth lens, canceling the opposite-sign aberration caused by the front group of lenses. The second side surface of the fifth lens is convex, converging the light rays diverged by the first side surface of the fifth lens to the image plane, achieving a small CRA and a long back focal length.

[0086] In an exemplary embodiment, the first side surface of the fifth lens may be convex, and the second side surface may be planar. The first side surface of the fifth lens is convex, converging the light rays emitted by the fourth lens to make the light rays smoothly transition, and assisting the fourth lens to jointly achieve a small CRA. The second side surface of the fifth lens is planar, serving to make the light rays smoothly transition to the image plane.

[0087] In an exemplary embodiment, a diaphragm may be provided in the optical lens. For example, the diaphragm may be disposed between the second lens and the third lens, or between the first lens and the second lens, which is beneficial to effectively converge the light entering the optical lens, reduce the lens aperture at the rear end of the optical system, and reduce the assembly sensitivity of the system. However, it should be noted that the positions of the diaphragms disclosed herein are merely examples and not limitations; in alternative embodiments, the diaphragms may also be disposed at other positions according to actual needs.

[0088] In an exemplary embodiment, the optical lens according to the present application may satisfy: d7 / TL ≤ 0.035, where d7 is the air gap between the third lens and the fourth lens on the optical axis, and TL is the distance on the optical axis from the first side surface of the first lens to the second side surface of the fifth lens. Satisfying d7 / TL ≤ 0.035, the air gap between the third lens and the fourth lens in the rear group is relatively small, so that the diffused large-aperture light entering the fifth lens is relatively small, which is beneficial to miniaturization. More specifically, the optical lens may further satisfy d7 / TL ≤ 0.03, which is beneficial to further miniaturization.

[0089] In an exemplary embodiment, the optical lens according to the present application may satisfy: F12 / F ≤ 5, where 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, based on the fact that the optical power of the first lens is negative and the optical power of the second lens is positive, the focal length matching of the first lens and the second lens is reasonably controlled at the position where the beam of the outermost field of view of the lens is most dispersed, which can minimize the correction pressure of the rear group of lenses on the large-field aberration, thereby maximizing the correction of the main ray angle of the large field of view by the rear group of lenses, which is beneficial 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 group of lenses on the large-field aberration, which is beneficial 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 beneficial to further reducing the correction pressure of the rear group of lenses on the large-field aberration and further improving the resolution on the basis of achieving a long back focus.

[0090] 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. Satisfying F5 / F ≤ 4.5, the optical power of the fifth lens is positive, and its focal length is controlled within a reasonable range, which can achieve a small CRA and a long back focus while ensuring that the light is smoothly converged to the image plane. More specifically, the optical lens may further satisfy F5 / F ≤ 4, which is beneficial to further achieving a small CRA and a long back focus.

[0091] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.15 mm ≤ F / FOV × 1° ≤ 5 mm, where FOV is the maximum field of view angle of the optical lens. Satisfying 0.15 mm ≤ F / FOV × 1° ≤ 5 mm, at a certain field of view, by reasonably matching the different optical powers of each lens, the large focal length of the optical system can be maintained, so that the optical system can correct the axial aberration brought by the large field of view while receiving light rays with a large field of view, and the resolution can be improved. Among them, the value of F / FOV × 1° can be 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, etc. More specifically, the optical lens may further satisfy 0.2 mm ≤ F / FOV × 1° ≤ 3 mm, which is beneficial to further improving the resolution. Furthermore, the optical lens can satisfy 0.2 mm ≤ F / FOV × 1° ≤ 1.5 mm, maintaining the large focal length of the optical system, so that the optical system can better receive light rays with a large field of view while being able to correct the axial aberration brought by the large field of view, thereby improving the resolution.

[0092] 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 angle of the optical lens. Satisfying 45° ≤ (FOV F) / H ≤ 90° is beneficial to meeting a large field of view and a long focal length, thus contributing to the improvement of the center resolution of the lens. More specifically, the optical lens may further satisfy 50° ≤ (FOV F) / H ≤ 80°, which is beneficial to further meeting a large field of view and a long focal length and improving the center resolution of the lens.

[0093] In an exemplary embodiment, the optical lens according to the present application may satisfy: TTL / F ≤ 7.5, where TTL is the overall optical length of the optical lens, that is, the distance from the first side of the first lens to the imaging surface (or image source surface) of the optical lens on the optical axis. Satisfying TTL / F ≤ 7.5, the overall optical length at a certain focal length is shorter, which is beneficial to realizing miniaturization. More specifically, the optical lens may further satisfy 2.5 ≤ TTL / F ≤ 6, which is beneficial to further realizing miniaturization.

[0094] In an exemplary embodiment, the optical lens according to the present application may satisfy: TTL / H / FOV × 1° ≤ 0.8. Satisfying this conditional formula, TTL is shorter at the same field of view angle, which is beneficial to realizing the miniaturization of the lens. Furthermore, the optical lens can satisfy TTL / H / FOV × 1° ≤ 0.5, which is beneficial to further realizing the miniaturization of the lens.

[0095] In an exemplary embodiment, the optical lens according to the present application can satisfy: TTL / H / θ ≤ 25, where θ is the radian value corresponding to the maximum field of view angle of the optical lens. Meeting this conditional expression, the TTL is shorter under the same image plane, which is beneficial to realizing the miniaturization of the lens. Further, the optical lens can satisfy TTL / H / θ ≤ 20, which is beneficial to further realizing the miniaturization of the lens.

[0096] In an exemplary embodiment, the optical lens according to the present application can satisfy: TTL / DMAX ≤ 5, where DMAX is the maximum value among the maximum clear apertures of the optical surfaces of the first lens to the fifth lens. Meeting this conditional expression can make the total system length relatively short, which is beneficial to realizing the miniaturization of the lens. Further, the optical lens can satisfy 2 ≤ TTL / DMAX ≤ 4.5, which is beneficial to further realizing the miniaturization of the lens.

[0097] In an exemplary embodiment, the optical lens according to the present application can satisfy: (F θ) / D ≥ 0.35, where D is the maximum clear aperture of the first side surface of the first lens. Meeting this conditional expression, at a certain field of view angle, the aperture is small, which is beneficial to realizing the miniaturization of the lens. Further, the optical lens can satisfy (F*θ) / D ≥ 0.5, which is beneficial to further realizing the miniaturization of the lens.

[0098] In an exemplary embodiment, the optical lens according to the present application can satisfy: D / H / FOV×1° ≤ 0.15. Meeting this conditional expression, at a certain image height, the aperture is small, which is beneficial to realizing the miniaturization of the lens. Further, the optical lens can satisfy D / H / FOV×1° ≤ 0.1, which is beneficial to further realizing the miniaturization of the lens.

[0099] In an exemplary embodiment, the optical lens according to the present application can satisfy: D / H / θ ≤ 5. Meeting this conditional expression, at a certain image height, the aperture is small, which is beneficial to realizing the miniaturization of the lens. Further, the optical lens can satisfy D / H / θ ≤ 4, which is beneficial to further realizing the miniaturization of the lens.

[0100] In an exemplary embodiment, the optical lens according to the present application can satisfy: D / H / F×1mm ≤ 0.35. Meeting this conditional expression, at a certain field of view angle and focal length, the aperture is small, which is beneficial to realizing the miniaturization of the lens. Further, the optical lens can satisfy D / H / F×1mm ≤ 0.2, which is beneficial to further realizing the miniaturization of the lens.

[0101] In an exemplary embodiment, the optical lens according to the present application can satisfy: |(H - F θ) / (F |(H - Fθ)| ≤ 0.1. When this conditional expression is satisfied, within a certain field of view, by reasonably controlling the focal length, the correction ability of the optical system for the chief ray of the large field of view can be improved. At the same time, the balance ability of the chief ray magnification between the edge field of view and the central field of view can be improved, which is beneficial to achieving small distortion. Further, the optical lens can satisfy |(H - F θ) / (F θ)| ≤ 0.08, which is beneficial to further achieving small distortion.

[0102] In an exemplary embodiment, the optical lens according to the present application can satisfy: BFL / TTL ≥ 0.3, where BFL is the back focal length of the optical lens, that is, the distance from the second side of the fifth lens to the imaging surface (or image source surface) of the optical lens on the optical axis. Satisfying this conditional expression helps to achieve the long back focal effect, leaving enough space for adding optical devices such as prisms, and is easy to process and assemble. Further, the optical lens can satisfy BFL / TTL ≥ 0.35, which is beneficial to further achieving the long back focal.

[0103] In an exemplary embodiment, the optical lens according to the present application can satisfy: BFL / TL ≥ 0.45. Satisfying this conditional expression helps to achieve the long back focal effect, leaving enough space for adding optical devices such as prisms, and is easy to process and assemble. Further, the optical lens can satisfy BFL / TL ≥ 0.5, which is beneficial to further achieving the long back focal.

[0104] In an exemplary embodiment, the optical lens according to the present application can satisfy: 1 ≤ F / H ≤ 4. Satisfying this conditional expression, by controlling the focal length and image height within a certain range, is beneficial to improving the resolution. Further, the optical lens can satisfy 1.2 ≤ F / H ≤ 3, which is beneficial to further improving the resolution.

[0105] In an exemplary embodiment, the optical lens according to the present application can satisfy: F / ENPD ≤ 2.8, where ENPD is the entrance pupil diameter of the optical lens. Satisfying this conditional expression is beneficial to achieving a small FNO, and at the same time is beneficial to increasing the light passing amount, which helps to improve the relative illumination. Further, the optical lens can satisfy F / ENPD ≤ 2.6, which is beneficial to further achieving a high light passing amount.

[0106] In an exemplary embodiment, the optical lens according to the present application can satisfy: F / ENPD / D × 1mm ≤ 0.8. Satisfying this conditional expression is beneficial to achieving a small FNO, and at the same time is beneficial to increasing the light passing amount, which helps to improve the relative illumination. Further, the optical lens can satisfy F / ENPD / D × 1mm ≤ 0.5, which is beneficial to further achieving a high light passing amount.

[0107] 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 diaphragm in the optical lens. Satisfying this conditional expression, controlling the ratio of the aperture diameter of the diaphragm to the effective focal length of the lens to be relatively large is beneficial for the lens to achieve the large aperture characteristic. Further, the optical lens may satisfy 0.4≤DST / F≤1.2, which is beneficial for further achieving the large aperture characteristic.

[0108] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.5≤(H / 2) / (F tan(θ / 2))≤1.8. Satisfying this conditional expression, under a certain field of view, reasonably controlling the focal length can improve the correction ability of the optical system for the chief ray of the large field of view, and at the same time can improve the balance ability of the magnification ratio of the chief ray between the edge field of view and the central field of view, which is beneficial for achieving small distortion. Further, the optical lens may satisfy 0.6≤(H / 2) / (F tan(θ / 2))≤1.5, which is beneficial for further achieving small distortion.

[0109] 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. Satisfying this conditional expression, the larger the air gap between the diaphragm and the first side of the third lens, the larger the aperture for the light to enter the rear, which is beneficial for the rear system to correct aberrations and reduce the system sensitivity. Further, the optical lens may satisfy 0.009≤T23 / TL≤0.7, which is beneficial for further reducing the system sensitivity.

[0110] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.1≤φ3-5 / φ≤3, where φ3-5 is the combined optical power of the third lens, the fourth lens, and the fifth lens, and φ is the optical power of the optical lens. Satisfying this conditional expression, by reasonably distributing the optical power of the rear group, it is beneficial to make the focal length of the rear group longer while maintaining miniaturization, which is beneficial for achieving the long back focal characteristic. Further, the optical lens may satisfy 0.3≤φ3-5 / φ≤1.5, which is beneficial for further reasonably distributing the optical power of the rear group, making the focal length of the rear group longer while maintaining miniaturization, and further achieving the long back focal characteristic.

[0111] 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 on the optical axis from the first side of the third lens to the second side of the fifth lens. Satisfying this conditional expression, by controlling the distance between the first side of the third lens and the second side of the fifth lens to be relatively small, it is beneficial for achieving the miniaturization of the lens. Further, the optical lens may satisfy d6-10 / TL≤0.65, which is beneficial for further achieving the miniaturization of the lens.

[0112] In an exemplary embodiment, the optical lens according to the present application may satisfy: d6-10 / TTL≤0.5. By satisfying this conditional expression and controlling the distance between the first side of the third lens and the second side of the fifth lens to be small, it is beneficial to achieve lens miniaturization. Further, the optical lens may satisfy d6-10 / TTL≤0.4, which is more beneficial to achieve lens miniaturization.

[0113] 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. By satisfying this conditional expression and controlling the air gap of the rear group of lenses to be small, the angle of the diffused large-aperture light entering the fifth lens is small, which is beneficial to achieve lens miniaturization. Further, the optical lens may satisfy d7 / TTL≤0.02, which is more beneficial to achieve lens miniaturization.

[0114] In an exemplary embodiment, the optical lens according to the present application may satisfy: 45mm≤D9 BFL / H≤90mm, where D9 is the maximum clear 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, and the more refined the correction of light in different regions. By satisfying this conditional expression, it is beneficial to correct the incident angle of the marginal field of view of the light emitted from the fifth lens to the image plane, and thus it is beneficial to achieve a small CRA. Further, the optical lens may satisfy 50mm≤D9 BFL / H≤85mm, which is more beneficial to correct the incident angle of the marginal field of view of the light emitted from the fifth lens to the image plane, and thus achieve a smaller CRA.

[0115] In an exemplary embodiment, the optical lens according to the present application may satisfy: -65≤F1 / F≤0, where F1 is the focal length of the first lens and F is the focal length of the optical lens. By satisfying this conditional expression and controlling the focal length of the first lens to be small, the ability of the first lens to receive light with a large viewing angle is strong, and thus there is no need to use a large-aperture lens, which is beneficial to achieve miniaturization. Further, the optical lens may satisfy -60≤F1 / F≤0, which is more beneficial to achieve miniaturization. More specifically, the optical lens may satisfy -5≤F1 / F≤0. By controlling the focal length of the first lens to be smaller, the ability of the first lens to receive light with a large viewing angle can be further improved, which is more beneficial to achieve lens miniaturization.

[0116] 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. By satisfying this conditional formula and reasonably allocating the focal length of the second lens, when the optical power of the first lens is negative and diverges light, the second lens, being a positive lens with a smaller focal length, has a stronger converging ability for light, can enable the light to be transmitted smoothly to the rear group, and can reduce the entry of large-field light into the rear group, thereby reducing large-field aberrations and improving the resolution.

[0117] In an exemplary embodiment, the optical lens according to the present application may satisfy: -65≤F1 / F345≤0, where F345 is the combined focal length of the third, fourth, and fifth lenses. By satisfying this conditional formula and reasonably controlling the ratio of the focal length of the first lens to the combined focal length of the rear group of lenses, the first lens can receive large-field light and compress it, which is beneficial for 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 large-field light; 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 group of lenses to correct and reduce chromatic aberration, correct telecentricity while improving resolution. Further, the optical lens may satisfy -50≤F1 / F345≤0, which is beneficial for further enabling the first lens to receive large-field light and for the rear group of lenses to further compress the light, correct telecentricity while improving resolution.

[0118] 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 surface of the first lens. By satisfying the conditional formula and reasonably controlling the curvature of the second side surface of the first lens, the divergence angle of the large-field light received by the first lens to the second lens can be reduced, further narrowing the field angle and enabling it to transition smoothly to the rear, reducing the degree of light refraction in the system, and thus reducing the system sensitivity. Further, the optical lens may satisfy |F / R2|≤3, which is beneficial for further reducing the system sensitivity.

[0119] In an exemplary embodiment, the optical lens according to the present application may satisfy: -5≤F1 / F2≤0. By satisfying the conditional formula and controlling the first lens to have a smaller focal length, the ability of the system to receive large-field light is enhanced. Coupled with the weak optical power of the second lens, the degree of light refraction in the system can be slowed down, a long back focal length can be achieved, and the aperture aberration caused by the large field of view can be corrected, improving the resolution. Further, the optical lens may satisfy -3≤F1 / F2≤0, which is beneficial for further improving the resolution and achieving a long back focal length.

[0120] 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, where 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. By satisfying this conditional expression and reasonably distributing the focal lengths of the front and rear lens groups, the light path can be made more gentle, the deflection degrees of the front and rear group of light rays can be made closer, and the resolution can be improved. Further, the optical lens may satisfy |max(F2, F3, F4, F5) / min(F2, F3, F4, F5)| ≤ 260, which is beneficial to further improving the resolution.

[0121] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.05 ≤ (T12 + T23) / TL ≤ 1, where T12 is the air gap between the first lens and the second lens on the optical axis, and T23 is the air gap between the second lens and the third lens on the optical axis. By satisfying this conditional expression, it is beneficial to control the large total gap 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 long transition zone in the system and is gradually transitioned to form a gentle light path, which helps to improve the resolution. Further, the optical lens may satisfy 0.1 ≤ (T12 + T23) / TL ≤ 0.8, which is beneficial to further form a gentle light path and improve the resolution. More specifically, the optical lens may satisfy 0.35 ≤ (T12 + T23) / TL ≤ 0.7, maintaining a large total gap between the first lens and the second lens and between the second lens and the third lens, so that the divergence trend of the light is elongated, and it is more beneficial to achieve the telephoto characteristic after the light is converged by the rear lens, and at the same time, the resolution can be further improved.

[0122] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.2 ≤ F345 / F ≤ 5. By satisfying this conditional expression, the axial aberration caused by the large field-of-view light in the front section can be effectively corrected by reasonably controlling the combined focal length of the third lens, the fourth lens, and the fifth lens, and at the same time, it is beneficial to achieve a long back focal length and a small telecentricity. Further, the optical lens may satisfy 0.5 ≤ F345 / F ≤ 3, which is beneficial to correcting the aperture aberration while maintaining a long back focal length and a small telecentricity. More specifically, the optical lens may satisfy 1 ≤ F345 / F ≤ 2.5, which is more beneficial to achieving the long back focal length characteristic and at the same time is beneficial to correcting the axial aberration caused by the large field-of-view light in the front section.

[0123] In an exemplary embodiment, the optical lens according to the present application can satisfy: MD1 / MD2 ≤ 1.3, where MD1 is the maximum clear aperture of the first lens, and MD2 is the maximum clear aperture of the second lens. By satisfying this conditional expression, the aperture of the first lens is controlled to be smaller than that of the second lens, so that the first lens bears a greater optical power than the second lens. In this way, not only can the front-end first lens receive light rays with a larger field of view, but also the field curvature aberration can be corrected by the large optical power difference between the first lens and the second lens, thereby achieving high resolution. Further, the optical lens can satisfy MD1 / MD2 ≤ 1.2, which is beneficial to further achieving high resolution.

[0124] In an exemplary embodiment, the optical lens according to the present application can satisfy: Dfront / Drear ≤ 0.9, where Dfront is the maximum value among the maximum clear apertures of the optical surfaces of the first lens and the second lens, and Drear is the maximum value among the maximum clear apertures of the optical surfaces of the third lens, the fourth lens, and the fifth lens. By satisfying this conditional expression, after the front-group small-aperture lens receives light rays with a large field of view, the degree of light ray refraction is slowed down, and the field curvature aberration is initially corrected. Then, the aperture aberration is further corrected and the chromatic aberration is compensated by the rear-group large-aperture lens, thereby improving the resolution. Further, the optical lens can satisfy Dfront / Drear ≤ 0.8, which is beneficial to further achieving high resolution.

[0125] In an exemplary embodiment, the optical lens according to the present application can satisfy: d3 / TL ≤ 0.35, where d3 is the central thickness of the second lens. By satisfying this conditional expression, the central thickness of the second lens is kept small. While ensuring miniaturization, the optical path of light in the second lens can be reduced, and the large-field-of-view light rays diverged from the first lens can be smoothly transitioned to the rear group, realizing the low sensitivity of the system. Further, the optical lens can satisfy d3 / TL ≤ 0.3, which is beneficial to further realizing the low sensitivity of the system.

[0126] In an exemplary embodiment, the optical lens according to the present application can satisfy: (T12 + T23) / BFL ≤ 1.5. By satisfying this conditional expression, it is beneficial to control the large total spacing distance between the first lens and the second lens, and between the second lens and the third lens, making the light ray trend smoother, the degree of light ray deflection of the front and rear groups closer, and reducing the system sensitivity. Further, the optical lens can satisfy 0.12 ≤ (T12 + T23) / BFL ≤ 1.2, which is beneficial to further reducing the system sensitivity.

[0127] In an exemplary embodiment, the optical lens according to the present application can satisfy: -50 ≤ F1 / BFL ≤ -0.15. By satisfying this conditional expression, the focal length of the first lens is reasonably controlled, enabling it to bear a greater optical power of the system, better correct the field aberration, while reducing the correction pressure of the rear group of lenses on the aberration, allowing the rear group to better correct the large-field light rays, ensuring high resolution while achieving a long back focal length. Further, the optical lens can satisfy -40 ≤ F1 / BFL ≤ -0.25, which is beneficial for further ensuring high resolution while achieving a long back focal length.

[0128] 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. By satisfying this conditional expression, the focal length of the third lens is reasonably controlled, forming a combination of positive and negative optical powers with the fourth lens. Additionally, by utilizing the large difference in refractive index and Abbe number, the dispersion difference of light with different wavelengths inside and after passing through the lens can be increased, achieving small chromatic aberration and improving resolution. Further, the optical lens can satisfy 0.6 ≤ F3 / F ≤ 3, which is beneficial for further achieving small chromatic aberration and improving resolution.

[0129] 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, forming a combination of positive and negative optical powers with the third lens. Additionally, by utilizing the large difference in refractive index and Abbe number, the dispersion difference of light with different wavelengths inside and after passing through the lens can be increased, achieving small chromatic aberration and improving resolution. Further, the optical lens can satisfy 0.5 ≤ |F4 / F| ≤ 3, which is beneficial for further achieving small chromatic aberration and improving resolution.

[0130] In an exemplary embodiment, the optical lens according to the present application can satisfy: F5 / F ≤ 4.5, where F5 is the focal length of the fifth lens. By satisfying this conditional expression, the fifth lens has a positive optical power and its focal length is set within a reasonable range, which can ensure that the light rays are smoothly converged onto the image plane while achieving a small CRA and a long back focal length. Further, the optical lens can satisfy F5 / F ≤ 4, which is beneficial for further achieving a small CRA and a long back focal length.

[0131] In an exemplary embodiment, the optical lens according to the present application can satisfy: d10 / TL ≤ 0.3, where d10 is the central thickness of the fifth lens. By satisfying this conditional expression, the thickness of the fifth lens is reasonably distributed. While reducing the volume, it helps to compress and deflect the light rays emitted by the fourth lens, and reduces the optical path of the light rays in the fifth lens, enabling the light rays to enter the image plane more smoothly, which is beneficial for improving the telecentricity and achieving a small CRA. Further, the optical lens can satisfy d10 / TL ≤ 0.2, which is beneficial for further improving the telecentricity and achieving a small CRA.

[0132] In an exemplary embodiment, the optical lens according to the present application may satisfy: d10 / TTL ≤ 0.2. By satisfying this conditional expression, the thickness of the fifth lens is reasonably allocated. While reducing the volume, it helps to compress and deflect the light rays emitted from the fourth lens, and reduces the optical path of the light rays in the fifth lens, enabling the light rays to enter the image plane more smoothly, which is beneficial to improving the telecentricity and achieving a small CRA. Further, the optical lens may satisfy d10 / TTL ≤ 0.12, which is beneficial to further improving the telecentricity and achieving a small CRA.

[0133] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.01 ≤ T23 / F ≤ 3. By satisfying this conditional expression, maintaining a relatively large distance between the second lens and the third lens is beneficial to making the light ray trend more gentle, making the deflection degrees of the front and rear group light rays closer, and reducing the system sensitivity. Further, the optical lens may satisfy 0.02 ≤ T23 / F ≤ 1.5, which is beneficial to further reducing the system sensitivity.

[0134] In an exemplary embodiment, the optical lens according to the present application may satisfy: -5 ≤ F / R1 ≤ 3. By satisfying this conditional expression, controlling the first side surface of the first lens to be concave and controlling its curvature within a certain range is beneficial to collecting light rays at large angles while correcting the aberrations brought by each field of view and improving the resolution. Further, 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 improving the resolution.

[0135] 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 surface of the third lens. By satisfying this conditional expression, controlling the second side surface of the third lens to be concave is beneficial to helping the third lens receive and correct the light ray aberrations transmitted from the front group of the diaphragm and reasonably compress them, improving the resolution of the system. Further, the optical lens may satisfy -2 ≤ F / R6 ≤ 3, which is beneficial to further improving the resolution of the system. More specifically, the optical lens may further satisfy 0 ≤ F / R6 ≤ 4, enabling the first side surface of the third lens to collect the diverging light rays in front and converge them, correcting the aberrations, and thus being beneficial to further improving the resolution.

[0136] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.3 ≤ (T12 + T23) / F ≤ 2.2. By satisfying this conditional expression, the total interval between the first lens and the second lens and between the second lens and the third lens is maintained large, so that the divergence trend of the light rays is elongated, which is beneficial to realizing the telephoto characteristic after the light rays are converged by the rear lens; at the same time, the light rays have a long transition region in the system, and are gradually transitioned to form 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 beneficial to further realizing 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, maintaining the large total interval between the first lens and the second lens and between the second lens and the third lens, so that the divergence trend of the light rays is elongated, and it is more beneficial to realize the telephoto characteristic after the light rays are converged by the rear lens, and at the same time, the resolution can be further improved.

[0137] In an exemplary embodiment, the optical lens according to the present application may satisfy: -10 ≤ F5 / R1 ≤ 3. By satisfying this conditional expression, the ratio relationship between the curvature of the first side surface of the first lens and the fifth lens is controlled within a reasonable range, which can ensure that the large field-of-view light rays collected by the first lens are converged by the fifth lens, achieving both telephoto and large field-of-view. Further, the optical lens may satisfy -9 ≤ F5 / R1 ≤ 1.5, which is beneficial to further realizing the telephoto characteristic while taking into account the 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 rays collected by the first lens are converged by the fifth lens, achieving both the telephoto characteristic and the large field-of-view.

[0138] The optical lens according to an exemplary embodiment of the present application may simultaneously satisfy: -20 ≤ F12 / F ≤ 3; Dfront / Drear ≤ 0.9. By controlling the combined focal length of the first lens and the second lens and matching the apertures of the first lens and the second lens to be smaller than those of the third lens, the fourth lens, and the fifth lens, high resolution can be achieved while ensuring a small telecentricity, achieving the linkage of high resolution and telecentricity.

[0139] The optical lens according to an exemplary embodiment of the present application may simultaneously satisfy: -5 ≤ F1 / F ≤ 0; 0 ≤ F / R6 ≤ 4. By controlling the focal length of the first lens to be small and matching the first side surface of the third lens to be convex, the light rays 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.

[0140] For the optical lens according to an 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 rays converge at a position closer to the front, reducing the pressure on the rear fifth lens to converge the light rays, and being more beneficial to realizing a small telecentricity.

[0141] The optical lens according to an exemplary embodiment of the present application can simultaneously satisfy: -20 ≤ F12 / F ≤ 0; 1 ≤ F345 / F ≤ 2.5. By controlling the combined focal length of the first lens and the second lens to be negative and the combined focal length of the third lens, the fourth lens, and the fifth lens to be positive, long focal length effects can be further facilitated through linkage.

[0142] The optical lens according to an exemplary embodiment of the present application can simultaneously satisfy: -3.5 ≤ F / R1 ≤ 0; Dfront / Drear ≤ 0.9. By controlling the surface shape of the first side of the first lens to be concave and its curvature within a suitable range, and by making the apertures of the first lens and the second lens smaller than those of the third lens, the fourth lens, and the fifth lens, the overall light rays show a divergent trend, enabling the linkage of high resolution and telecentricity.

[0143] The optical lens according to an exemplary embodiment of the present application can simultaneously satisfy: 0.2 mm ≤ F / FOV × 1° ≤ 1.5 mm; -10 ≤ F5 / R1 ≤ 3. The relationship between the curvature of the first side of the first lens and the focal length of the fifth lens is within a reasonable range, ensuring that the large field of view light collected by the first lens is converged by the fifth lens, thereby enabling the linkage of long focal length and large field of view.

[0144] The optical lens according to an exemplary embodiment of the present application can simultaneously satisfy: 0.2 mm ≤ F / FOV × 1° ≤ 1.5 mm; 0.8 ≤ (T12 + T23) / F ≤ 1.9. By keeping the total distance between the first lens and the second lens, and between the second lens and the third lens large, the divergent trend of the light rays is elongated, which is more conducive to realizing the long focal length characteristics of the lens after the light rays are converged by the rear lenses.

[0145] In an exemplary embodiment, according to requirements, 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 surface to filter light rays with different wavelengths and prevent damage to the image-side components (e.g., chips) of the optical lens.

[0146] 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 tolerance sensitivity of the third lens and the fourth lens can also be reduced. At the same time, when the third lens and the fourth lens are cemented, the light rays passing through the front lenses can be smoothly transitioned to the rear optical system, reducing the total length of the lens; and various aberrations of the optical system can be fully corrected, improving the resolution and optimizing optical performance such as distortion and CRA on the premise of a compact structure.

[0147] In addition, the use of the gluing method between the above lenses has at least one of the following advantages: reducing the air gap between the two lenses and reducing the overall length of the system; reducing the assembly components between the lenses, reducing the processes, and lowering the cost; reducing the sensitivity of the lens unit to tolerances such as tilt / eccentricity generated during the assembly process, and improving the production yield; reducing the light loss caused by reflection between the lenses and enhancing the illuminance; further reducing the field curvature and effectively correcting the off-axis 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 overall optical lens compact, meeting the miniaturization requirements.

[0148] 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 being a negative cemented lens has a better effect of improving the resolution. The light converges through the third lens and then diverges through the fourth lens. Thus, the refraction of the light during the process from the third lens to the fifth lens is relatively uniform, which is more conducive to improving the resolution.

[0149] In an exemplary embodiment, at least one surface of each optical surface of the first lens to the fifth lens of the optical lens has an anastigmatism. The setting of the anastigmatism is beneficial to further correct the light, enabling the light to transition smoothly to the next surface, and the anastigmatism can correct the angle of the marginal light, reduce the marginal 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 anastigmatism point. The setting of the anastigmatism point is beneficial to better correct the aberration of the light emerging from different fields while maintaining the overall shape of the lens.

[0150] In an exemplary embodiment, the first lens to the fifth lens may be spherical lenses or aspherical lenses. Exemplarily, at least one of the first lens to the fifth lens is an aspherical lens. The characteristics of an aspherical lens are that the curvature changes continuously from the center to the periphery of the lens. Different from a spherical lens with a constant curvature from the center to the periphery, an aspherical lens has better curvature radius characteristics and has the advantages of improving the distortion aberration and the astigmatism aberration. After using an aspherical lens, it is possible to eliminate the aberration that appears during imaging 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 emphasizing the imaging quality, the number of aspherical lenses can be increased, or even all lenses can be aspherical lenses.

[0151] In an exemplary embodiment, at least one of the first lens, the second lens, or the fifth lens is an aspherical lens. The setting of the aspherical lens can change the surface shape, thereby changing the angle of the light turning direction, reducing the system aberration, and further improving the resolution. It should be emphasized that according to actual needs, other lenses can also adopt aspherical surfaces.

[0152] In an exemplary embodiment, the second lens is an aspherical lens with a concavo-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 cut-off frequency of 60 lp / mm is greater than 0.6.

[0153] In an exemplary embodiment, the first lens to the fifth lens can be glass lenses or plastic lenses. 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 can all be glass aspherical lenses. The optical lens made of glass can suppress the shift of the back focal length of the imaging system components with temperature changes to improve system stability. At the same time, using glass material can avoid problems such as blurred imaging of the lens and affecting the normal use of the lens caused by high and low temperature changes in the use environment. 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 application scenarios with lower temperature stability requirements, the first lens to the fifth lens in the optical lens can also be all made of plastic. Making the optical lens with plastic can effectively reduce the manufacturing cost.

[0154] According to the above embodiments of the present application, through the reasonable setting of the number of lenses, the shape and optical power of each lens, the optical lens can meet the requirements of miniaturization, high resolution (MTF greater than 0.4 within the spatial cut-off frequency of 60 lp / mm), small telecentricity (telecentricity less than 3°), long back focal length (back focal length greater than 15 mm), and large field of view (greater than 20°) with only five lenses.

[0155] However, those skilled in the art should understand that without departing from the technical solutions 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 the five-lens example is described in the embodiment, the optical lens is not limited to including five lenses. If necessary, the optical lens can also include other numbers of lenses.

[0156] The following further describes specific embodiments of the optical lens applicable to the above embodiments with reference to the drawings.

[0157] Embodiment 1

[0158] The following refers to Figure 1 Describe the optical lens according to Embodiment 1 of the present application. Figure 1 The structural schematic diagram of the optical lens according to Embodiment 1 of the present application is shown.

[0159] As Figure 1As shown, the optical lens sequentially includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, and a fifth lens L5 along the optical axis from the first side to the second side.

[0160] 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.

[0161] In this embodiment, the third lens L3 and the fourth lens L4 form a cemented lens.

[0162] The first lens L1 has a negative focal power, its first side S1 is concave, and its second side S2 is concave. The second lens L2 has a positive focal power, its first side S3 is convex, and its second side S4 is convex. The third lens L3 has a negative focal power, its first side S6 is concave, and its second side S7 is concave. The fourth lens L4 has a positive focal power, its first side S8 is convex, and its second side S9 is convex. The fifth lens L5 has a positive focal power, its first side S10 is convex, and its second side S11 is convex.

[0163] 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 surface (IMA). The filter L6 has a first side S12 and a second side S13, and the protective glass L7 has a first side S14 and a second side S15.

[0164] Table 1 shows the radius of curvature R, thickness / distance, refractive index Nd, and dispersion coefficient Vd of each lens of the optical lens of Embodiment 1.

[0165] Table 1

[0166]

[0167] The optical lens provided in this application can be used as, for example, a vehicle-mounted lens. At this time, light from an object sequentially passes through each optical surface S1 to S15 and finally forms an image on the imaging surface (IMA) S16 disposed on the second side, where an image sensing chip may be disposed at the imaging surface (IMA).

[0168] It should be understood that the optical lens provided in this application can also be used as, for example, a projection lens or a laser radar transmitting end lens. At this time, light from the image source surface (IMA) sequentially passes through each optical surface S15 to S1 and finally projects onto an object or a projection surface (not shown) disposed on the first side.

[0169] Embodiment 2

[0170] The following refers to Figure 2 Describe the optical lens according to Embodiment 2 of this application. In this embodiment and the following embodiments, for the sake of simplicity, some descriptions similar to those in Embodiment 1 will be omitted.

[0171] As Figure 2 shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is concave, and its second side S2 is concave. The second lens L2 has a positive optical power, its first side S3 is convex, and its second side S4 is flat. The third lens L3 has a negative optical power, its first side S6 is convex, and its second side S7 is concave. The fourth lens L4 has a positive optical power, its first side S8 is convex, and its second side S9 is convex. The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is convex.

[0172] Table 2 shows the parameters of each lens of the optical lens of Embodiment 2.

[0173] Table 2

[0174]

[0175] Embodiment 3

[0176] The following refers to Figure 3 describe the optical lens according to Embodiment 3 of the present application.

[0177] As Figure 3 shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is concave, and its second side S2 is convex. The second lens L2 has a positive optical power, its first side S3 is concave, and its second side S4 is convex. The third lens L3 has a negative optical power, its first side S6 is convex, and its second side S7 is concave. The fourth lens L4 has a positive optical power, its first side S8 is convex, and its second side S9 is convex. The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is convex.

[0178] 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 S12 and a second side S13.

[0179] Table 3 shows the parameters of each lens of the optical lens of Embodiment 3.

[0180] Table 3

[0181]

[0182] In this embodiment, the first side S1 and the second side S2 of the first lens L1 of the optical lens, and the first side S10 and the second side S11 of the fifth lens L5 are aspherical mirror surfaces, and the surface profiles of the aspherical mirror surfaces can be defined by, but not limited to, the following aspherical formula (1).

[0183] (1)

[0184] Wherein, x is the sagitta of the aspheric surface along the optical axis at a position with a height of h from the vertex of the aspheric surface; c is the paraxial curvature of the aspheric surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient; Ai is the correction coefficient of the i -th order of the aspheric surface.

[0185] Table 4 shows the conic coefficient (k) and the high-order term coefficients A4 , A6 , A8 , A10 , A12 , A14 and A16 that can be used for the aspheric mirror surface in this embodiment.

[0186] Table 4

[0187]

[0188] Example 4

[0189] The following describes the optical lens according to Example 4 of the present application with reference to Figure 4 .

[0190] As shown in Figure 4 , in this embodiment, the first lens L1 has a negative optical power, its first side S1 is concave, and its second side S2 is concave. The second lens L2 has a positive optical power, its first side S3 is flat, and its second side S4 is convex. The third lens L3 has a negative optical power, its first side S6 is flat, and its second side S7 is concave. The fourth lens L4 has a positive optical power, its first side S8 is convex, and its second side S9 is convex. The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is convex.

[0191] Table 5 shows the parameters of each lens of the optical lens of Example 4.

[0192] Table 5

[0193]

[0194] Example 5

[0195] The following describes the optical lens according to Example 5 of the present application with reference to Figure 5 .

[0196] As Figure 5 shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is concave, and its second side S2 is concave. The second lens L2 has a positive optical power, its first side S3 is convex, and its second side S4 is flat. The third lens L3 has a negative optical power, its first side S6 is convex, and its second side S7 is concave. The fourth lens L4 has a positive optical power, its first side S8 is convex, and its second side S9 is convex. The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is convex.

[0197] Table 6 shows the parameters of each lens of the optical lens of Embodiment 5.

[0198] Table 6

[0199]

[0200] Embodiment 6

[0201] The following refers to Figure 6 describe the optical lens according to Embodiment 6 of the present application.

[0202] As Figure 6 shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is concave, and its second side S2 is concave. The second lens L2 has a positive optical power, its first side S3 is convex, and its second side S4 is convex. The third lens L3 has a negative optical power, its first side S6 is convex, and its second side S7 is concave. The fourth lens L4 has a positive optical power, its first side S8 is convex, and its second side S9 is convex. The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is convex.

[0203] 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 S12 and a second side S13.

[0204] Table 7 shows the parameters of each lens of the optical lens of Embodiment 6.

[0205] Table 7

[0206]

[0207] Table 8 shows the parameters of the aspherical mirror surfaces that can be used in this embodiment. Among them, the aspherical surface types can be defined by the formula (1) given in Embodiment 1 above, and among them, the aspherical surface types can be defined by the formula (1) given in Embodiment 1 above.

[0208] Table 8

[0209]

[0210] Example 7

[0211] The following refers to Figure 7 Describe the optical lens according to Example 7 of the present application.

[0212] As Figure 7 shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is a plane, and its second side S2 is a concave surface. The second lens L2 has a positive optical power, its first side S3 is a convex surface, and its second side S4 is a convex surface. The third lens L3 has a negative optical power, its first side S6 is a concave surface, and its second side S7 is a concave surface. The fourth lens L4 has a positive optical power, its first side S8 is a convex surface, and its second side S9 is a convex surface. The fifth lens L5 has a positive optical power, its first side S10 is a convex surface, and its second side S11 is a convex surface.

[0213] Table 9 shows the parameters of each lens of the optical lens of Example 7.

[0214] Table 9

[0215]

[0216] Example 8

[0217] The following refers to Figure 8 Describe the optical lens according to Example 8 of the present application.

[0218] As Figure 8 shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is a concave surface, and its second side S2 is a plane. The second lens L2 has a positive optical power, its first side S3 is a concave surface, and its second side S4 is a convex surface. The third lens L3 has a negative optical power, its first side S6 is a convex surface, and its second side S7 is a concave surface. The fourth lens L4 has a positive optical power, its first side S8 is a convex surface, and its second side S9 is a convex surface. The fifth lens L5 has a positive optical power, its first side S10 is a convex surface, and its second side S11 is a convex surface.

[0219] 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 S12 and a second side S13.

[0220] Table 10 shows the parameters of each lens of the optical lens of Example 8.

[0221] Table 10

[0222]

[0223] Table 11 shows the parameters of the aspherical mirrors that can be used in this embodiment. Among them, each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0224] Table 11

[0225]

[0226] Embodiment 9

[0227] The following refers to Figure 9 Describe the optical lens according to Embodiment 9 of the present application.

[0228] As Figure 9 shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is a convex surface, and its second side S2 is a concave surface. The second lens L2 has a positive optical power, its first side S3 is a concave surface, and its second side S4 is a convex surface. The third lens L3 has a negative optical power, its first side S6 is a concave surface, and its second side S7 is a concave surface. The fourth lens L4 has a positive optical power, its first side S8 is a convex surface, and its second side S9 is a convex surface. The fifth lens L5 has a positive optical power, its first side S10 is a convex surface, and its second side S11 is a convex surface.

[0229] Table 12 shows the parameters of each lens of the optical lens of Embodiment 9.

[0230] Table 12

[0231]

[0232] Table 13 shows the parameters of the aspherical mirrors that can be used in this embodiment. Among them, each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0233] Table 13

[0234]

[0235] Embodiment 10

[0236] The following refers to Figure 10 Describe the optical lens according to Embodiment 10 of the present application.

[0237] As Figure 10As shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is concave, and its second side S2 is concave. The second lens L2 has a positive optical power, its first side S3 is convex, and its second side S4 is concave. The third lens L3 has a negative optical power, its first side S6 is convex, and its second side S7 is concave. The fourth lens L4 has a positive optical power, its first side S8 is convex, and its second side S9 is convex. The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is convex.

[0238] Table 14 shows the parameters of each lens of the optical lens of Embodiment 10.

[0239] Table 14

[0240]

[0241] Embodiment 11

[0242] The following refers to Figure 11 Describe the optical lens according to Embodiment 11 of the present application.

[0243] As Figure 11 shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is convex, and its second side S2 is concave. The second lens L2 has a positive optical power, its first side S3 is convex, and its second side S4 is convex. The third lens L3 has a negative optical power, its first side S6 is concave, and its second side S7 is concave. The fourth lens L4 has a positive optical power, its first side S8 is convex, and its second side S9 is convex. The fifth lens L5 has a positive optical power, its first side S10 is concave, and its second side S11 is convex.

[0244] Table 15 shows the parameters of each lens of the optical lens of Embodiment 11.

[0245] Table 15

[0246]

[0247] Table 16 shows the parameters of the aspherical mirror surfaces that can be used in this embodiment, where each aspherical surface type can be defined by formula (1) given in Embodiment 1 above.

[0248] Table 16

[0249]

[0250] Embodiment 12

[0251] The following refers to Figure 12 Describe the optical lens according to Embodiment 12 of the present application.

[0252] AsFigure 12 As shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is convex, and its second side S2 is concave. The second lens L2 has a positive optical power, its first side S3 is concave, and its second side S4 is convex. The third lens L3 has a negative optical power, its first side S6 is concave, and its second side S7 is concave. The fourth lens L4 has a positive optical power, its first side S8 is convex, and its second side S9 is convex. The fifth lens L5 has a positive optical power, its first side S10 is flat, and its second side S11 is convex.

[0253] 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 S12 and a second side S13.

[0254] Table 17 shows the parameters of each lens of the optical lens of Embodiment 12.

[0255] Table 17

[0256]

[0257] Table 18 shows the parameters of the aspherical mirror surfaces that can be used in this embodiment, where each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0258] Table 18

[0259]

[0260] Embodiment 13

[0261] The following refers to Figure 13 Describe the optical lens according to Embodiment 13 of the present application.

[0262] As Figure 13 shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is concave, and its second side S2 is concave. The second lens L2 has a positive optical power, its first side S3 is convex, and its second side S4 is convex. The third lens L3 has a negative optical power, its first side S6 is concave, and its second side S7 is concave. The fourth lens L4 has a positive optical power, its first side S8 is convex, and its second side S9 is convex. The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is flat.

[0263] Table 19 shows the parameters of each lens of the optical lens of Embodiment 13.

[0264] Table 19

[0265]

[0266] Example 14

[0267] The following refers to Figure 14 Describe the optical lens according to Example 14 of the present application.

[0268] As Figure 14 shown, the optical lens sequentially includes a first lens L1, a second lens L2, a stop STO, a third lens L3, a fourth lens L4, and a fifth lens L5 along the optical axis from the first side to the second side.

[0269] The first lens L1 has a negative focal power, its first side S1 is concave, and its second side S2 is concave. The second lens L2 has a positive focal power, its first side S3 is convex, and its second side S4 is convex. The third lens L3 has a negative focal power, its first side S6 is concave, and its second side S7 is concave. The fourth lens L4 has a positive focal power, its first side S8 is convex, and its second side S9 is convex. The fifth lens L5 has a positive focal power, its first side S10 is convex, and its second side S11 is concave.

[0270] Table 20 shows the parameters of each lens of the optical lens of Example 14.

[0271] Table 20

[0272]

[0273] Table 21 shows the parameters that can be used for the aspherical mirror surfaces in this embodiment, where each aspherical surface type can be defined by the formula (1) given in Example 1 above.

[0274] Table 21

[0275]

[0276] For the optical lenses according to Embodiments 1 to 14 of the present application, the range of the MTF value at a spatial frequency of 60 lp / mm is 0.4 to 0.68; the telecentricity is between 1.69° and 2.26°, and the overall is less than 3°; the optical distortion is in the range of 1.2% to 5.5%. It can be seen that the optical lenses given in Embodiments 1 to 14 have high resolution and can achieve good imaging quality.

[0277] Example 15

[0278] The following refers to Figure 15 Describe the optical lens according to Example 15 of the present application.

[0279] As Figure 15As shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is concave, and its second side S2 is concave. The second lens L2 has a positive optical power, its first side S3 is convex, and its second side S4 is concave. The third lens L3 has a positive optical power, its first side S6 is convex, and its second side S7 is convex. The fourth lens L4 has a negative optical power, its first side S8 is concave, and its second side S9 is flat. The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is convex.

[0280] Table 22 shows the parameters of each lens of the optical lens of Embodiment 15.

[0281] Table 22

[0282]

[0283] Table 23 shows the parameters of the aspherical mirror surfaces that can be used in this embodiment, where each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0284] Table 23

[0285]

[0286] Embodiment 16

[0287] The following refers to Figure 16 Describe the optical lens according to Embodiment 16 of the present application.

[0288] As Figure 16 shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is concave, and its second side S2 is flat. The second lens L2 has a positive optical power, its first side S3 is concave, and its second side S4 is convex. The third lens L3 has a positive optical power, its first side S6 is convex, and its second side S7 is convex. The fourth lens L4 has a negative optical power, its first side S8 is concave, and its second side S9 is convex. The fifth lens L5 has a positive optical power, its first side S10 is flat, and its second side S11 is convex.

[0289] Table 24 shows the parameters of each lens of the optical lens of Embodiment 16.

[0290] Table 24

[0291]

[0292] Table 25 shows the parameters of the aspherical mirror surfaces that can be used in this embodiment, where each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0293] Table 25

[0294]

[0295] Example 17

[0296] The following is a reference to Figure 17 Describe the optical lens according to Example 17 of the present application.

[0297] As Figure 17 As shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is concave, and its second side S2 is convex. The second lens L2 has a positive optical power, its first side S3 is concave, and its second side S4 is convex. The third lens L3 has a positive optical power, its first side S6 is convex, and its second side S7 is convex. The fourth lens L4 has a negative optical power, its first side S8 is concave, and its second side S9 is convex. The fifth lens L5 has a positive optical power, its first side S10 is concave, and its second side S11 is convex.

[0298] In this embodiment, the second side S2 of the first lens L1 has an anastigmatism.

[0299] 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 S12 and a second side S13.

[0300] Table 26 shows the parameters of each lens of the optical lens of Example 17.

[0301] Table 26

[0302]

[0303] Table 27 shows the parameters of the aspherical mirror surfaces that can be used in this embodiment, where each aspherical surface type can be defined by the formula (1) given in Example 1 above.

[0304] Table 27

[0305]

[0306] Example 18

[0307] The following is a reference to Figure 18 Describe the optical lens according to Example 18 of the present application.

[0308] As Figure 18As shown, in this embodiment, the first lens L1 has a negative optical power. Its first side S1 is a plane, and its second side S2 is a concave surface. The second lens L2 has a positive optical power. Its first side S3 is a convex surface, and its second side S4 is a concave surface. The third lens L3 has a positive optical power. Its first side S6 is a convex surface, and its second side S7 is a convex surface. The fourth lens L4 has a negative optical power. Its first side S8 is a concave surface, and its second side S9 is a concave surface. The fifth lens L5 has a positive optical power. Its first side S10 is a convex surface, and its second side S11 is a convex surface.

[0309] Table 28 shows the parameters of each lens of the optical lens of Embodiment 18.

[0310] Table 28

[0311]

[0312] Table 29 shows the parameters of the aspherical mirror surfaces that can be used in this embodiment. Among them, each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0313] Table 29

[0314]

[0315] Embodiment 19

[0316] The following refers to Figure 19 to describe the optical lens according to Embodiment 19 of the present application.

[0317] As Figure 19 shown, in this embodiment, the first lens L1 has a negative optical power. Its first side S1 is a convex surface, and its second side S2 is a concave surface. The second lens L2 has a positive optical power. Its first side S3 is a convex surface, and its second side S4 is a concave surface. The third lens L3 has a positive optical power. Its first side S6 is a convex surface, and its second side S7 is a convex surface. The fourth lens L4 has a negative optical power. Its first side S8 is a concave surface, and its second side S9 is a convex surface. The fifth lens L5 has a positive optical power. Its first side S10 is a convex surface, and its second side S11 is a plane.

[0318] In this embodiment, the second side S4 of the second lens L2 has an anamorphic curve.

[0319] Table 30 shows the parameters of each lens of the optical lens of Embodiment 19.

[0320] Table 30

[0321]

[0322] Table 31 shows the parameters of the aspherical mirror surface that can be used in this embodiment. Among them, each aspherical surface type can be defined by formula (1) given in Embodiment 1 above.

[0323] Table 31

[0324]

[0325] Embodiment 20

[0326] The following refers to Figure 20 Describe the optical lens according to Embodiment 20 of the present application.

[0327] As Figure 20 shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is a concave surface, and its second side S2 is a concave surface. The second lens L2 has a positive optical power, its first side S3 is a convex surface, and its second side S4 is a flat surface. The third lens L3 has a positive optical power, its first side S6 is a convex surface, and its second side S7 is a convex surface. The fourth lens L4 has a negative optical power, its first side S8 is a concave surface, and its second side S9 is a convex surface. The fifth lens L5 has a positive optical power, its first side S10 is a convex surface, and its second side S11 is a concave surface.

[0328] In this embodiment, the optical lens may further include a prism L6 located between the fifth lens L5 and the imaging surface (IMA). The prism L6 has a first side S12 and a second side S13.

[0329] Table 32 shows the parameters of each lens of the optical lens of Embodiment 20.

[0330] Table 32

[0331]

[0332] Table 33 shows the parameters of the aspherical mirror surface that can be used in this embodiment. Among them, each aspherical surface type can be defined by formula (1) given in Embodiment 1 above.

[0333] Table 33

[0334]

[0335] Embodiment 21

[0336] The following refers to Figure 21 Describe the optical lens according to Embodiment 21 of the present application.

[0337] As Figure 21As shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is concave, and its second side S2 is concave. The second lens L2 has a positive optical power, its first side S3 is flat, and its second side S4 is convex. The third lens L3 has a positive optical power, its first side S6 is flat, and its second side S7 is convex. The fourth lens L4 has a negative optical power, its first side S8 is concave, and its second side S9 is convex. The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is convex.

[0338] Table 34 shows the parameters of each lens of the optical lens of Example 21.

[0339] Table 34

[0340]

[0341] Table 35 shows the parameters of the aspherical mirror surfaces that can be used in this embodiment. Among them, each aspherical surface type can be defined by the formula (1) given in the above Example 1.

[0342] Table 35

[0343]

[0344] Example 22

[0345] The following refers to Figure 22 Describe the optical lens according to Embodiment 22 of the present application.

[0346] As Figure 22 shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is concave, and its second side S2 is concave. The second lens L2 has a positive optical power, its first side S3 is concave, and its second side S4 is convex. The third lens L3 has a positive optical power, its first side S6 is concave, and its second side S7 is convex. The fourth lens L4 has a negative optical power, its first side S8 is concave, and its second side S9 is convex. The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is convex.

[0347] Table 36 shows the parameters of each lens of the optical lens of Example 22.

[0348] Table 36

[0349]

[0350] Table 37 shows the parameters of the aspherical mirror surfaces that can be used in this embodiment. Among them, each aspherical surface type can be defined by the formula (1) given in the above Example 1.

[0351] Table 37

[0352]

[0353] Example 23

[0354] The following refers to Figure 23 Describe the optical lens according to Example 23 of the present application.

[0355] As Figure 23 shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is concave, and its second side S2 is convex. The second lens L2 has a positive optical power, its first side S3 is convex, and its second side S4 is convex. The third lens L3 has a positive optical power, its first side S6 is convex, and its second side S7 is flat. The fourth lens L4 has a negative optical power, its first side S8 is flat, and its second side S9 is concave. The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is convex.

[0356] In this embodiment, the second side S2 of the first lens L1 and the second side S11 of the fifth lens L5 have anastigmatism.

[0357] 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 S12 and a second side S13.

[0358] Table 38 shows the parameters of each lens of the optical lens of Example 23.

[0359] Table 38

[0360]

[0361] Table 39 shows the parameters of the aspherical mirror surfaces that can be used in this embodiment, where each aspherical surface type can be defined by the formula (1) given in Example 1 above.

[0362] Table 39

[0363]

[0364] Example 24

[0365] The following refers to Figure 24 Describe the optical lens according to Example 24 of the present application.

[0366] As Figure 24As shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is concave, and its second side S2 is convex. The second lens L2 has a positive optical power, its first side S3 is convex, and its second side S4 is convex. The third lens L3 has a positive optical power, its first side S6 is convex, and its second side S7 is concave. The fourth lens L4 has a negative optical power, its first side S8 is convex, and its second side S9 is concave. The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is convex.

[0367] In this embodiment, the second side S2 of the first lens L1 and the second side S11 of the fifth lens L5 have anastigmatism.

[0368] Table 40 shows the parameters of each lens of the optical lens of Embodiment 24.

[0369] Table 40

[0370]

[0371] Table 41 shows the parameters of the aspherical mirror surfaces that can be used in this embodiment. Among them, each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0372] Table 41

[0373]

[0374] Embodiment 25

[0375] The following refers to Figure 25 Describe the optical lens according to Embodiment 25 of the present application.

[0376] As Figure 25 shown, the optical lens sequentially includes a first lens L1, a second lens L2, a diaphragm STO, a third lens L3, a fourth lens L4, and a fifth lens L5 along the optical axis from the first side to the second side.

[0377] The first lens L1 has a negative optical power, its first side S1 is concave, and its second side S2 is convex. The second lens L2 has a positive optical power, its first side S3 is convex, and its second side S4 is convex. The third lens L3 has a positive optical power, its first side S6 is convex, and its second side S7 is concave. The fourth lens L4 has a negative optical power, its first side S8 is concave, and its second side S9 is concave. The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is convex.

[0378] In this embodiment, the second side S2 of the first lens L1 and the second side S11 of the fifth lens L5 have anastigmatism.

[0379] In this embodiment, the optical lens may further include a prism L6 located between the fifth lens L5 and the imaging surface (IMA). The prism L6 has a first side surface S12 and a second side surface S13.

[0380] Table 42 shows the parameters of each lens of the optical lens according to Embodiment 25.

[0381] Table 42

[0382]

[0383] Table 43 shows the parameters of the aspherical mirror surfaces that can be used in this embodiment. Among them, each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0384] Table 43

[0385]

[0386] Embodiment 26

[0387] The following refers to Figure 26 Describe the optical lens according to Embodiment 26 of the present application.

[0388] As Figure 26 shown, the optical lens sequentially includes a first lens L1, a diaphragm STO, a second lens L2, a third lens L3, a fourth lens L4, and a fifth lens L5 along the optical axis from the first side to the second side.

[0389] The first lens L1 has a negative optical power. Its first side surface S1 is concave, and its second side surface S2 is convex. The second lens L2 has a positive optical power. Its first side surface S4 is concave, and its second side surface S5 is convex. The third lens L3 has a positive optical power. Its first side surface S6 is convex, and its second side surface S7 is convex. The fourth lens L4 has a negative optical power. Its first side surface S8 is concave, and its second side surface S9 is convex. The fifth lens L5 has a positive optical power. Its first side surface S10 is convex, and its second side surface S11 is concave.

[0390] Table 44 shows the parameters of each lens of the optical lens according to Embodiment 26.

[0391] Table 44

[0392]

[0393] Embodiment 27

[0394] The following refers to Figure 27 Describe the optical lens according to Embodiment 27 of the present application.

[0395] As Figure 27As shown in the figure, the optical lens sequentially 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 along the optical axis from the first side to the second side. Among them, the third lens L3 and the fourth lens L4 form a cemented lens.

[0396] The first lens L1 has a negative focal power. Its first side S1 is concave, and its second side S2 is convex. The second lens L2 has a positive focal power. Its first side S4 is concave, and its second side S5 is convex. The third lens L3 has a positive focal power. Its first side S6 is convex, and its second side S7 is convex. The fourth lens L4 has a negative focal power. Its first side S8 is concave, and its second side S9 is convex. The fifth lens L5 has a positive focal power. Its first side S10 is convex, and its second side S11 is concave.

[0397] Table 45 shows the parameters of each lens of the optical lens of Example 27.

[0398] Table 45

[0399]

[0400] Table 46 shows the parameters of the aspherical mirror surfaces that can be used in this embodiment. Among them, each aspherical surface type can be defined by the formula (1) given in the above Example 1.

[0401] Table 46

[0402]

[0403] For the optical lens according to Embodiments 15 to 27 of the present application, the range of the MTF value at a spatial frequency of 60 lp / mm is 0.4 to 0.7; the telecentricity is between 1.29° and 2.27°, and the overall is less than 3°; the optical distortion is in the range of 3.43% to 7.82%. Further, the optical distortion can be controlled within the range of 3.43% to 5.5%. It can be seen that the optical lenses given in Embodiments 15 to 27 have high resolution and can achieve good imaging quality.

[0404] Example 28

[0405] The following refers to Figure 28 Describe the optical lens according to Embodiment 28 of the present application.

[0406] As Figure 28As shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is concave, and its second side S2 is concave. The second lens L2 has a positive optical power, its first side S3 is convex, and its second side S4 is concave. The third lens L3 has a positive optical power, its first side S6 is convex, and its second side S7 is convex. The fourth lens L4 has a negative optical power, its first side S8 is concave, and its second side S9 is convex. The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is convex.

[0407] Table 47 shows the parameters of each lens of the optical lens of Embodiment 28.

[0408] Table 47

[0409]

[0410] Table 48 shows the parameters of the aspherical mirror surfaces that can be used in this embodiment, where each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0411] Table 48

[0412]

[0413] Embodiment 29

[0414] The following refers to Figure 29 Describe the optical lens according to Embodiment 29 of the present application.

[0415] As Figure 29 shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is concave, and its second side S2 is flat. The second lens L2 has a positive optical power, its first side S3 is concave, and its second side S4 is convex. The third lens L3 has a positive optical power, its first side S6 is convex, and its second side S7 is convex. The fourth lens L4 has a negative optical power, its first side S8 is concave, and its second side S9 is convex. The fifth lens L5 has a positive optical power, its first side S10 is flat, and its second side S11 is convex.

[0416] Table 49 shows the parameters of each lens of the optical lens of Embodiment 29.

[0417] Table 49

[0418]

[0419] Table 50 shows the parameters of the aspherical mirror surfaces that can be used in this embodiment, where each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0420] Table 50

[0421]

[0422] Example 30

[0423] The following refers to Figure 30 Describe the optical lens according to Example 30 of the present application.

[0424] As Figure 30 As shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is concave, and its second side S2 is convex. The second lens L2 has a positive optical power, its first side S3 is concave, and its second side S4 is convex. The third lens L3 has a positive optical power, its first side S6 is convex, and its second side S7 is convex. The fourth lens L4 has a negative optical power, its first side S8 is concave, and its second side S9 is convex. The fifth lens L5 has a positive optical power, its first side S10 is concave, and its second side S11 is convex.

[0425] In this embodiment, the second side S2 of the first lens L1 has an anastigmatism.

[0426] 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 S12 and a second side S13.

[0427] Table 51 shows the parameters of each lens of the optical lens of Example 30.

[0428] Table 51

[0429]

[0430] Table 50 shows the parameters of the aspherical mirror surfaces that can be used in this embodiment, and among them, each aspherical surface type can be defined by the formula (1) given in the above Example 1.

[0431] Table 50

[0432]

[0433] Example 31

[0434] The following refers to Figure 31 Describe the optical lens according to Example 31 of the present application.

[0435] As Figure 31As shown, in this embodiment, the first lens L1 has a negative optical power. Its first side S1 is a plane, and its second side S2 is a concave surface. The second lens L2 has a positive optical power. Its first side S3 is a convex surface, and its second side S4 is a concave surface. The third lens L3 has a positive optical power. Its first side S6 is a convex surface, and its second side S7 is a convex surface. The fourth lens L4 has a negative optical power. Its first side S8 is a concave surface, and its second side S9 is a concave surface. The fifth lens L5 has a positive optical power. Its first side S10 is a convex surface, and its second side S11 is a convex surface.

[0436] Table 51 shows the parameters of each lens of the optical lens of Embodiment 31.

[0437] Table 51

[0438]

[0439] Table 52 shows the parameters of the aspherical mirror surfaces that can be used in this embodiment. Among them, each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0440] Table 52

[0441]

[0442] Embodiment 32

[0443] The following refers to Figure 32 Describe the optical lens according to Embodiment 32 of the present application.

[0444] As Figure 32 shown, in this embodiment, the first lens L1 has a negative optical power. Its first side S1 is a convex surface, and its second side S2 is a concave surface. The second lens L2 has a positive optical power. Its first side S3 is a convex surface, and its second side S4 is a concave surface. The third lens L3 has a positive optical power. Its first side S6 is a convex surface, and its second side S7 is a convex surface. The fourth lens L4 has a negative optical power. Its first side S8 is a concave surface, and its second side S9 is a convex surface. The fifth lens L5 has a positive optical power. Its first side S10 is a convex surface, and its second side S11 is a plane.

[0445] Table 53 shows the parameters of each lens of the optical lens of Embodiment 32.

[0446] Table 53

[0447]

[0448] Table 54 shows the parameters of the aspherical mirror surfaces that can be used in this embodiment. Among them, each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0449] Table 54

[0450]

[0451] Example 33

[0452] The following is a reference to Figure 33 Describe the optical lens according to Embodiment 33 of the present application.

[0453] As Figure 33 shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is concave, and its second side S2 is concave. The second lens L2 has a positive optical power, its first side S3 is convex, and its second side S4 is flat. The third lens L3 has a positive optical power, its first side S6 is convex, and its second side S7 is convex. The fourth lens L4 has a negative optical power, its first side S8 is concave, and its second side S9 is convex. The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is concave.

[0454] 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 S12 and a second side S13.

[0455] Table 55 shows the parameters of each lens of the optical lens of Example 33.

[0456] Table 55

[0457]

[0458] Table 56 shows the parameters of the aspherical mirror surfaces that can be used in this embodiment, where each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0459] Table 56

[0460]

[0461] Example 34

[0462] The following is a reference to Figure 34 Describe the optical lens according to Embodiment 34 of the present application.

[0463] As Figure 34 shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is concave, and its second side S2 is concave. The second lens L2 has a positive optical power, its first side S3 is flat, and its second side S4 is convex. The third lens L3 has a positive optical power, its first side S6 is flat, and its second side S7 is convex. The fourth lens L4 has a negative optical power, its first side S8 is concave, and its second side S9 is convex. The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is convex.

[0464] Table 57 shows the parameters of each lens of the optical lens of Example 34.

[0465] Table 57

[0466]

[0467] Table 58 shows the parameters of the aspherical mirror surfaces that can be used in this example. Among them, each aspherical surface type can be defined by the formula (1) given in Example 1 above.

[0468] Table 58

[0469]

[0470] Example 35

[0471] The following refers to Figure 35 Describe the optical lens according to Example 35 of the present application.

[0472] As Figure 35 shown, in this example, the first lens L1 has a negative optical power, its first side S1 is concave, and its second side S2 is concave. The second lens L2 has a positive optical power, its first side S3 is concave, and its second side S4 is convex. The third lens L3 has a positive optical power, its first side S6 is concave, and its second side S7 is convex. The fourth lens L4 has a negative optical power, its first side S8 is concave, and its second side S9 is convex. The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is convex.

[0473] In this example, the optical lens may further include a prism L6 located between the fifth lens L5 and the imaging surface (IMA). The prism L6 has a first side S12 and a second side S13.

[0474] Table 59 shows the parameters of each lens of the optical lens of Example 35.

[0475] Table 59

[0476]

[0477] Table 60 shows the parameters of the aspherical mirror surfaces that can be used in this example. Among them, each aspherical surface type can be defined by the formula (1) given in Example 1 above.

[0478] Table 60

[0479]

[0480] Example 36

[0481] The following refers to Figure 36Describe the optical lens according to Embodiment 36 of the present application.

[0482] As Figure 36 shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is concave, and its second side S2 is convex. The second lens L2 has a positive optical power, its first side S3 is convex, and its second side S4 is convex. The third lens L3 has a positive optical power, its first side S6 is convex, and its second side S7 is concave. The fourth lens L4 has a negative optical power, its first side S8 is convex, and its second side S9 is concave. The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is convex.

[0483] In this embodiment, the second side S2 of the first lens L1 and the second side S11 of the fifth lens L5 have anastigmatism.

[0484] Table 61 shows the parameters of each lens of the optical lens of Embodiment 36.

[0485] Table 61

[0486]

[0487] Table 62 shows the parameters of the aspherical mirror surfaces that can be used in this embodiment, where each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0488] Table 62

[0489]

[0490] Embodiment 37

[0491] The following refers to Figure 37 Describe the optical lens according to Embodiment 37 of the present application.

[0492] As Figure 37 shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is concave, and its second side S2 is convex. The second lens L2 has a positive optical power, its first side S3 is convex, and its second side S4 is convex. The third lens L3 has a positive optical power, its first side S6 is convex, and its second side S7 is convex. The fourth lens L4 has a negative optical power, its first side S8 is concave, and its second side S9 is concave. The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is convex.

[0493] In this embodiment, the second side S2 of the first lens L1 and the second side S11 of the fifth lens L5 have anastigmatism.

[0494] Table 63 shows the parameters of each lens of the optical lens of Embodiment 37.

[0495] Table 63

[0496]

[0497] Table 64 shows the parameters that can be used for the aspherical mirror surfaces in this embodiment. Among them, each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0498] Table 64

[0499]

[0500] Embodiment 38

[0501] The following refers to Figure 38 to describe the optical lens according to Embodiment 38 of the present application.

[0502] As Figure 38 shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is concave, and its second side S2 is convex. The second lens L2 has a positive optical power, its first side S3 is convex, and its second side S4 is convex. The third lens L3 has a positive optical power, its first side S6 is convex, and its second side S7 is concave. The fourth lens L4 has a negative optical power, its first side S8 is concave, and its second side S9 is concave. The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is convex.

[0503] In this embodiment, the second side S2 of the first lens L1 and the second side S11 of the fifth lens L5 have anastigmatism.

[0504] Table 65 shows the parameters of each lens of the optical lens of Embodiment 38.

[0505] Table 65

[0506]

[0507] Table 66 shows the parameters that can be used for the aspherical mirror surfaces in this embodiment. Among them, each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0508] Table 66

[0509]

[0510] Embodiment 39

[0511] The following refers to Figure 39 to describe the optical lens according to Embodiment 39 of the present application.

[0512] As Figure 39As shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is concave, and its second side S2 is convex. The second lens L2 has a positive optical power, its first side S4 is concave, and its second side S5 is convex. The third lens L3 has a positive optical power, its first side S6 is convex, and its second side S7 is convex. The fourth lens L4 has a negative optical power, its first side S8 is concave, and its second side S9 is convex. The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is concave.

[0513] 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 S12 and a second side S13.

[0514] Table 67 shows the parameters of each lens of the optical lens of Embodiment 39.

[0515] Table 67

[0516]

[0517] Table 68 shows the parameters of the aspherical mirror surfaces that can be used in this embodiment, where each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0518] Table 68

[0519]

[0520] Embodiment 40

[0521] The following refers to Figure 40 Describe the optical lens according to Embodiment 40 of the present application.

[0522] As Figure 40 shown, the optical lens sequentially includes a first lens L1, a diaphragm STO, a second lens L2, a third lens L3, a fourth lens L4, and a fifth lens L5 along the optical axis from the first side to the second side.

[0523] The first lens L1 has a negative optical power, its first side S1 is concave, and its second side S2 is convex. The second lens L2 has a positive optical power, its first side S4 is concave, and its second side S5 is convex. The third lens L3 has a positive optical power, its first side S6 is convex, and its second side S7 is convex. The fourth lens L4 has a negative optical power, its first side S8 is concave, and its second side S9 is convex. The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is concave.

[0524] Table 69 shows the parameters of each lens of the optical lens of Embodiment 40.

[0525] Table 69

[0526]

[0527] For the optical lens according to Embodiments 28 to 40 of the present application, the range of the MTF value at a spatial frequency of 60 lp / mm is 0.3 to 0.58; the telecentricity is between 0.5° and 2.7°, and the overall is less than 3°; the optical distortion is in the range of 3.43% to 7.82%. Further, the optical distortion can be controlled within the range of 3.43% to 5.5%. It can be seen that the optical lenses given in Embodiments 28 to 40 have high resolution and can achieve good imaging quality.

[0528] Embodiment 41

[0529] The following refers to Figure 41 Describe the optical lens according to Embodiment 41 of the present application.

[0530] As Figure 41 shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is concave, and its second side S2 is concave. The second lens L2 has a positive optical power, its first side S3 is convex, and its second side S4 is convex. The third lens L3 has a negative optical power, its first side S6 is concave, and its second side S7 is concave. The fourth lens L4 has a positive optical power, its first side S8 is convex, and its second side S9 is convex. The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is convex.

[0531] 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 surface (IMA). The filter L6 has a first side S12 and a second side S13, and the protective glass L7 has a first side S14 and a second side S15.

[0532] Table 70 shows the parameters of each lens of the optical lens of Embodiment 41.

[0533] Table 70

[0534]

[0535] Embodiment 42

[0536] The following refers to Figure 42 Describe the optical lens according to Embodiment 42 of the present application.

[0537] As Figure 42As shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is concave, and its second side S2 is concave. The second lens L2 has a positive optical power, its first side S3 is convex, and its second side S4 is flat. The third lens L3 has a negative optical power, its first side S6 is convex, and its second side S7 is concave. The fourth lens L4 has a positive optical power, its first side S8 is convex, and its second side S9 is convex. The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is convex.

[0538] Table 71 shows the parameters of each lens of the optical lens of Example 42.

[0539] Table 71

[0540]

[0541] Example 43

[0542] The following refers to Figure 43 Describe the optical lens according to Embodiment 43 of the present application.

[0543] As Figure 43 shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is concave, and its second side S2 is convex. The second lens L2 has a positive optical power, its first side S3 is concave, and its second side S4 is convex. The third lens L3 has a negative optical power, its first side S6 is convex, and its second side S7 is concave. The fourth lens L4 has a positive optical power, its first side S8 is convex, and its second side S9 is convex. The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is convex.

[0544] Table 72 shows the parameters of each lens of the optical lens of Example 43.

[0545] Table 72

[0546]

[0547] Table 73 shows the parameters of the aspherical mirror surfaces that can be used in this embodiment, where each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0548] Table 73

[0549]

[0550] Example 44

[0551] The following refers to Figure 44 Describe the optical lens according to Embodiment 44 of the present application.

[0552] AsFigure 44 As shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is concave, and its second side S2 is concave. The second lens L2 has a positive optical power, its first side S3 is flat, and its second side S4 is convex. The third lens L3 has a negative optical power, its first side S6 is flat, and its second side S7 is concave. The fourth lens L4 has a positive optical power, its first side S8 is convex, and its second side S9 is convex. The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is convex.

[0553] Table 74 shows the parameters of each lens of the optical lens of Embodiment 44.

[0554] Table 74

[0555]

[0556] Embodiment 45

[0557] The following refers to Figure 45 Describe the optical lens according to Embodiment 45 of the present application.

[0558] As Figure 45 shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is concave, and its second side S2 is concave. The second lens L2 has a positive optical power, its first side S3 is convex, and its second side S4 is flat. The third lens L3 has a negative optical power, its first side S6 is convex, and its second side S7 is concave. The fourth lens L4 has a positive optical power, its first side S8 is convex, and its second side S9 is convex. The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is convex.

[0559] 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 S12 and a second side S13.

[0560] Table 75 shows the parameters of each lens of the optical lens of Embodiment 45.

[0561] Table 75

[0562]

[0563] Embodiment 46

[0564] The following refers to Figure 46 Describe the optical lens according to Embodiment 46 of the present application.

[0565] As Figure 46As shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is concave, and its second side S2 is concave. The second lens L2 has a positive optical power, its first side S3 is convex, and its second side S4 is convex. The third lens L3 has a negative optical power, its first side S6 is convex, and its second side S7 is concave. The fourth lens L4 has a positive optical power, its first side S8 is convex, and its second side S9 is convex. The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is concave.

[0566] Table 76 shows the parameters of each lens of the optical lens of Embodiment 46.

[0567] Table 76

[0568]

[0569] Table 77 shows the parameters of the aspherical mirror surfaces that can be used in this embodiment, where each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0570] Table 77

[0571]

[0572] Embodiment 47

[0573] The following refers to Figure 47 Describe the optical lens according to Embodiment 47 of the present application.

[0574] As Figure 47 shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is flat, and its second side S2 is concave. The second lens L2 has a positive optical power, its first side S3 is convex, and its second side S4 is convex. The third lens L3 has a negative optical power, its first side S6 is concave, and its second side S7 is concave. The fourth lens L4 has a positive optical power, its first side S8 is convex, and its second side S9 is convex. The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is convex.

[0575] Table 78 shows the parameters of each lens of the optical lens of Embodiment 47.

[0576] Table 78

[0577]

[0578] Embodiment 48

[0579] The following refers to Figure 48 Describe the optical lens according to Embodiment 48 of the present application.

[0580] AsFigure 48 As shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is concave, and its second side S2 is flat. The second lens L2 has a positive optical power, its first side S3 is concave, and its second side S4 is convex. The third lens L3 has a negative optical power, its first side S6 is convex, and its second side S7 is concave. The fourth lens L4 has a positive optical power, its first side S8 is convex, and its second side S9 is convex. The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is convex.

[0581] 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 S12 and a second side S13.

[0582] Table 79 shows the parameters of each lens of the optical lens of Embodiment 48.

[0583] Table 79

[0584]

[0585] Table 80 shows the parameters of the aspherical mirror surfaces that can be used in this embodiment, where each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0586] Table 80

[0587]

[0588] Embodiment 49

[0589] The following refers to Figure 49 Describe the optical lens according to Embodiment 49 of the present application.

[0590] As Figure 49 shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is convex, and its second side S2 is concave. The second lens L2 has a positive optical power, its first side S3 is concave, and its second side S4 is convex. The third lens L3 has a negative optical power, its first side S6 is concave, and its second side S7 is concave. The fourth lens L4 has a positive optical power, its first side S8 is convex, and its second side S9 is convex. The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is convex.

[0591] Table 81 shows the parameters of each lens of the optical lens of Embodiment 49.

[0592] Table 81

[0593]

[0594] Table 82 shows the parameters of the aspherical mirror surface that can be used in this embodiment. Among them, each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0595] Table 82

[0596]

[0597] Embodiment 50

[0598] The following refers to Figure 50 Describe the optical lens according to Embodiment 50 of the present application.

[0599] As Figure 50 shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is concave, and its second side S2 is concave. The second lens L2 has a positive optical power, its first side S3 is convex, and its second side S4 is convex. The third lens L3 has a negative optical power, its first side S6 is convex, and its second side S7 is concave. The fourth lens L4 has a positive optical power, its first side S8 is convex, and its second side S9 is convex. The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is convex.

[0600] Table 83 shows the parameters of each lens of the optical lens of Embodiment 50.

[0601] Table 83

[0602]

[0603] Embodiment 51

[0604] The following refers to Figure 51 Describe the optical lens according to Embodiment 51 of the present application.

[0605] As Figure 51 shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is convex, and its second side S2 is concave. The second lens L2 has a positive optical power, its first side S3 is convex, and its second side S4 is convex. The third lens L3 has a negative optical power, its first side S6 is concave, and its second side S7 is concave. The fourth lens L4 has a positive optical power, its first side S8 is convex, and its second side S9 is convex. The fifth lens L5 has a positive optical power, its first side S10 is concave, and its second side S11 is convex.

[0606] In this embodiment, the optical lens may further include a prism L6 located between the fifth lens L5 and the imaging surface (IMA). The prism L6 has a first side S12 and a second side S13.

[0607] Table 84 shows the parameters of each lens of the optical lens of Embodiment 51.

[0608] Table 84

[0609]

[0610] Table 85 shows the parameters applicable to the aspherical mirror surfaces in this embodiment. Among them, each aspherical surface type can be defined by formula (1) given in Embodiment 1 above.

[0611] Table 85

[0612]

[0613] Embodiment 52

[0614] The following refers to Figure 52 to describe the optical lens according to Embodiment 52 of the present application.

[0615] As Figure 52 shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is a convex surface, and its second side S2 is a concave surface. The second lens L2 has a positive optical power, its first side S3 is a concave surface, and its second side S4 is a convex surface. The third lens L3 has a negative optical power, its first side S6 is a concave surface, and its second side S7 is a concave surface. The fourth lens L4 has a positive optical power, its first side S8 is a convex surface, and its second side S9 is a convex surface. The fifth lens L5 has a positive optical power, its first side S10 is a flat surface, and its second side S11 is a convex surface.

[0616] Table 86 shows the parameters of each lens of the optical lens of Embodiment 52.

[0617] Table 86

[0618]

[0619] Table 87 shows the parameters applicable to the aspherical mirror surfaces in this embodiment. Among them, each aspherical surface type can be defined by formula (1) given in Embodiment 1 above.

[0620] Table 87

[0621]

[0622] Embodiment 53

[0623] The following refers to Figure 53 to describe the optical lens according to Embodiment 53 of the present application.

[0624] As Figure 53As shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is concave, and its second side S2 is concave. The second lens L2 has a positive optical power, its first side S3 is convex, and its second side S4 is convex. The third lens L3 has a negative optical power, its first side S6 is concave, and its second side S7 is concave. The fourth lens L4 has a positive optical power, its first side S8 is convex, and its second side S9 is convex. The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is flat.

[0625] Table 88 shows the parameters of each lens of the optical lens of Embodiment 53.

[0626] Table 88

[0627]

[0628] Embodiment 54

[0629] The following refers to Figure 54 to describe the optical lens according to Embodiment 54 of the present application.

[0630] As Figure 54 shown, in this embodiment, the first lens L1 has a negative optical power, its first side S1 is concave, and its second side S2 is concave. The second lens L2 has a positive optical power, its first side S3 is convex, and its second side S4 is convex. The third lens L3 has a negative optical power, its first side S6 is concave, and its second side S7 is concave. The fourth lens L4 has a positive optical power, its first side S8 is convex, and its second side S9 is convex. The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is concave.

[0631] 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 S12 and a second side S13.

[0632] Table 89 shows the parameters of each lens of the optical lens of Embodiment 54.

[0633] Table 89

[0634]

[0635] Table 90 shows the parameters of the aspherical mirror surfaces that can be used in this embodiment, where each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0636] Table 90

[0637]

[0638] The optical lenses according to Embodiments 41 to 54 of the present application have MTF values in the range of 0.3 to 0.58 at a spatial frequency of 60 lp / mm; the telecentricity is between 1.69° and 2.7°, and the overall value is less than 3°; the optical distortion is in the range of 1.2% to 7.82%. Further, the optical distortion can be controlled within the range of 1.2% to 5.5%. It can be seen that the optical lenses given in Embodiments 41 to 54 have high resolution and can achieve good imaging quality.

[0639] The following Tables 91, 92, 93, 94, 95 and 96 show some parameters of the optical lenses of the above Embodiments 1 to 54, such as the focal length F, optical power φ, entrance pupil diameter ENPD, overall optical length TTL, back focal length BFL, diaphragm aperture DST, maximum field of view FOV, the radian value θ corresponding to the maximum field of view, and the focal length values of each lens, etc. Among them, the units of each focal length value, distance or aperture are all millimeters (mm), and the unit of FOV is degrees (°).

[0640] Table 91

[0641]

[0642] Table 92

[0643]

[0644] Table 93

[0645]

[0646] Table 94

[0647]

[0648] Table 95

[0649]

[0650] Table 96

[0651]

[0652] In summary, the optical lenses of the above Embodiments 1 to 54 respectively satisfy the conditional expressions shown in the following Tables 97-1, 97-2, 98-1, 98-2, 99-1, 99-2, 100-1, 100-2, 101-1, 101-2, 102-1 and 101-2.

[0653] Table 97-1

[0654]

[0655] Table 97-2

[0656]

[0657] Table 98-1

[0658]

[0659] Table 98-2

[0660]

[0661] Table 99-1

[0662]

[0663] Table 99-2

[0664]

[0665] Table 100-1

[0666]

[0667] Table 100-2

[0668]

[0669] Table 101-1

[0670]

[0671] Table 101-2

[0672]

[0673] Table 102-1

[0674]

[0675] Table 102-2

[0676]

[0677] The present application also provides an electronic device, which may include an optical lens according to the above embodiments 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 ranging camera, or an imaging module integrated on a ranging device such as a ranging device.

[0678] In addition, the electronic device may also be an independent imaging device such as a vehicle-mounted camera, or an imaging module integrated on an auxiliary driving system such as an auxiliary driving system.

[0679] In addition, the present application also provides an electronic device, which may include an optical lens and a light source according to the above embodiments of the present application. The light source may be 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 an illuminated area on the first side. The electronic device may be an emission / projective / projection lens, and the light from the light source side 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.

[0680] The above description is only the preferred embodiments of the present application and the description of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, and 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 technical solutions formed by mutually replacing the above features with the technical features (but not limited to) disclosed in the present application having similar functions.

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: 0≤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: -88.18≤F12 / F≤5; The focal length F5 of the fifth lens and the focal length F of the optical lens satisfy: 1.09≤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; The optical lens meets the following requirements: 45mm≤D9 BFL / H≤90mm; wherein D9 is the maximum clear aperture of the first side surface of the fifth lens, BFL is the back focal length of the optical lens, and H is the image height corresponding to the maximum field angle of the optical lens.

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 the following: 0.48≤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: 0.065≤D / H / F×1mm≤0.35; 2.5≤TTL / F≤7.5; 0.223≤TTL / H / FOV×1°≤0.8; 12.76≤TTL / H / θ≤25; TTL / DMAX≤5; 0.033≤D / H / FOV×1°≤0.15; 1.878≤D / H / θ≤5; 0.35≤(F θ) / D≤1.034; 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 satisfies at least one of the following conditions: 0.3≤BFL / TTL≤0.49; 0.45≤BFL / TL≤0.962; 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°; 0.0003≤ (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: 1.9≤F / ENPD≤2.8; 0.176≤F / ENPD / D×1mm≤0.8; 0.35≤DST / F≤1.2; 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 meets at least one of the following conditions: 0.2≤F345 / F≤5; 0.1≤ 3-5 / ≤3; in, 3-5 is the combined optical power of the third lens, the fourth lens and the fifth lens, is the optical power 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 satisfies at least one of the following conditions: 0.222≤d6-10 / TL≤0.8; 0.133≤d6-10 / TTL≤0.5; 0≤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; 1≤F2 / F≤424.829; 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 meets at least one of the following conditions: -5≤F / R1≤3; 0≤ 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 meets at least one of the following conditions: 0.3≤F3 / F≤4.5; 0.1≤ F4 / F ≤4; <h2 style=";text-align:left;direction:ltr">1.052≤<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr"> max(F2,F3,F4,F5) / min(F2,F3,F4,F5)<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr"> ≤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; 0.12≤(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 satisfies: 0.595≤MD1 / MD2≤1.3; Among them, MD1 is the maximum light-clearance diameter of the first lens, and MD2 is the maximum light-clearance diameter 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: 0.003≤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: 0.058≤d10 / TL≤0.3; 0.036≤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; 12.76 ≤ TTL / H / θ ≤ 20; 2 ≤ TTL / DMAX ≤ 4.5; 0.5 ≤ (F θ) / D ≤ 1.034; 0.033 ≤ D / H / FOV × 1° ≤ 0.1; 1.878 ≤ D / H / θ ≤ 4; 0.065 ≤ D / H / F × 1mm ≤ 0.2; 0.0003 ≤ (H - F θ) / (F θ) ≤ 0.08; 0.35 ≤ BFL / TTL ≤ 0.49; 0.5 ≤ BFL / TL ≤ 0.962; 1.2 ≤ F / H ≤ 3; 1.9 ≤ F / ENPD ≤ 2.6; 0.176 ≤ 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 ≤ 3 - 5 / ≤ 1.5; 0.222 ≤ d6 - 10 / TL ≤ 0.65; 0.133 ≤ d6 - 10 / TTL ≤ 0.4; 0 ≤ d7 / TL ≤ 0.03; 0 ≤ 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; 1.052 ≤ 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; 1 ≤ F12 / F ≤ 4; -88.18 ≤ F12 / F ≤ 0; 0.595 ≤ MD1 / MD2 ≤ 1.2; 0.48 ≤ D before / D after ≤ 0.8; 0.003 ≤ 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;1.09≤F5 / F≤4;0.058≤d10 / TL≤0.2;0.036≤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 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, ENPD is the entrance pupil diameter of the optical lens, and DST is the aperture diameter of the aperture. 3-5 is the combined optical power of the third lens, the fourth lens and the fifth lens, is the focal power 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 clear 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, 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 focal length of the 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, 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 among the maximum clear apertures of the optical surfaces of the first lens and the second lens, Dback is the maximum value among 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.

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×1mm≤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 ≤ 3 - 5 / ≤ 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 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, ENPD is the entrance pupil diameter of the optical lens, and DST is the aperture diameter of the aperture. 3-5 is the combined optical power of the third lens, the fourth lens and the fifth lens, is the focal power 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 clear 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, 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 focal length of the 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, 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 among the maximum clear apertures of the optical surfaces of the first lens and the second lens, Dback is the maximum value among 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.

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