Optical lens and electronic equipment

Abstract

The invention discloses an optical lens and electronic equipment. The optical lens sequentially comprises a first lens with positive focal power from a first side to a second side along an optical axis, a second lens with negative focal power, a third lens with positive focal power, a fourth lens with positive focal power and a fifth lens with negative focal power, the first side surface of the second lens is a concave surface, and the second side surface of the second lens is a concave surface; the first side surface of the third lens is a convex surface, and the second side surface of the third lens is a convex surface; the fourth lens has focal power; the positive and negative attributes of the symbols of the focal power of the fifth lens and the fourth lens are opposite; and a sixth lens having focal power; wherein the number of lenses with focal power in the optical lens is six; the optical lens satisfies 3 < = F1 / F < = 10.

Description

TECHNICAL FIELD

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

[0002] In recent years, with the continuous development of automobile intelligence and automatic driving technology, the market of vehicle-mounted lenses continues to grow. In the next few years, the number of vehicle-mounted lenses will increase significantly to meet higher-level automatic driving functions and safety requirements. Vehicle-mounted lenses refer to optical lenses installed on vehicles to achieve various functions, which may include, for example, interior-viewing lenses, rear-viewing lenses, front-viewing lenses, side-viewing lenses, surround-viewing lenses, etc.; among them, front-viewing lenses and side-viewing lenses are key components to realize ADAS (Advanced Driving Assistance System) and automatic driving functions, and the market demand is particularly strong.

[0003] Front-viewing and side-viewing cameras need to detect medium and long distance objects, but medium and long distance imaging requires a longer focal length of the lens, and long focal length is often accompanied by a decrease in the field of view (the field of view is generally about 30°), which leads to a reduction in the detection range, which is not conducive to the development of automatic driving; at the same time, a longer focal length will also cause the lens to have a larger volume, which is not conducive to the miniaturization of the lens.

[0004] In addition, due to the complexity of actual road detection, the lens needs to have good recognition ability for objects, so the imaging quality requirement of the lens itself is relatively high, and in order to adapt to more diverse application scenarios, high resolution has gradually become an urgent demand of people. In order to meet the higher imaging quality requirement, more lens structures are often selected, which will seriously affect the miniaturization of the lens; and on the basis of meeting the imaging requirements of vehicle-mounted lenses, the smaller the lens is, the more convenient it is to install the vehicle-mounted lens, but this will lead to the contradiction between the high resolution and the miniaturization of ordinary vehicle-mounted lenses. SUMMARY

[0005] Considering that the existing vehicle-mounted lenses have the following problems: cannot simultaneously meet the requirements of high resolution and miniaturization; cannot simultaneously meet the requirements of long focal length and large field of view. In order to at least solve one of the above problems, some embodiments of the present application provide an optical lens and an electronic device.

[0006] A first aspect of the present application provides an optical lens comprising, in order from a first side to a second side along an optical axis: a first lens having positive refractive power, a first side of the first lens being convex, a second side of the first lens being concave; a second lens having negative refractive power, a first side of the second lens being concave, a second side of the second lens being concave; a third lens having positive refractive power, a first side of the third lens being convex, a second side of the third lens being convex; a fourth lens having refractive power; a fifth lens having refractive power, a sign of the refractive power of the fifth lens being opposite to a sign of the refractive power of the fourth lens; and a sixth lens having refractive power; wherein a number of lenses having refractive power in the optical lens is six; the optical lens satisfies: 3≤F1 / F≤10; wherein F1 is an effective focal length of the first lens, F is a total effective focal length of the optical lens.

[0007] In this way, the optical lens of the present application adopts six lenses with optical power, the first side light first enters the first side of the first lens and then exits from the second side of the first lens: the first lens has positive optical power, the first side is convex, and the second side is concave, which can effectively converge the light, avoid the over divergence of the object side light, and collect as much as possible the large field of view light into the rear optical system, while ensuring the entry of a large amount of light, it is also conducive to improving the overall light transmittance and illumination of the lens; at the same time, by controlling the ratio of the effective focal length of the first lens to the total effective focal length of the optical lens, i.e. 3≤F1 / F≤10, the effective focal length of the first lens and the total effective focal length of the optical lens are controlled within a reasonable range, which is conducive to collecting large field of view light into the rear optical system, while realizing long focal length; in addition, the effective focal length of the first lens is not too large, which is conducive to light convergence, realizing large field of view angle and small aperture, and the effective focal length of the first lens is not too small, which is conducive to the regulation of the rear light, realizing high resolution and large image surface. The divergent light exiting from the first lens enters the second lens: the second lens has negative optical power, the first side is concave, and the second side is concave, which has a diverging effect on the light, can disperse the center light and the edge light of each field of view, expand the aperture of the rear light, and increase the system illumination; at the same time, the double concave structure of the second lens can also disperse the light better, which is conducive to the correction of the aberration of the edge light and the center light, realizing high resolution, and under the same viewing angle condition, the light exiting from the second side of the second lens can make the subsequent optical system have a larger light receiving surface, realizing a larger light amount, and increasing the image surface brightness. The light exiting from the second lens enters the third lens: the third lens has positive optical power, the first side is convex, and the second side is convex, which can quickly converge the light with a divergent trend in the front, change the light trend, and make the light close to the optical axis, which is the key light turning point in this architecture, which is conducive to the smooth entry of the light into the rear optical system, reduces the rear aperture, and improves the resolution quality. The light exiting from the third lens enters the fourth lens and the fifth lens: the fourth lens and the fifth lens have opposite sign optical power, which is more conducive to the smooth transition of the light and improves the resolution quality. The light exiting from the fifth lens can smoothly reach the imaging surface after entering the sixth lens, realizing high resolution.

[0008] According to an example embodiment of the present application, the fourth lens has positive optical power, the first side of the fourth lens is convex, and the second side of the fourth lens is convex.

[0009] According to an example embodiment of the present application, the fourth lens has negative optical power, the first side of the fourth lens is convex, and the second side of the fourth lens is concave.

[0010] According to an example embodiment of the present application, the fifth lens has negative optical power, the first side of the fifth lens is concave, and the second side of the fifth lens is concave or convex.

[0011] According to an example embodiment of the present application, the fifth lens has positive refractive power, the first side surface of the fifth lens is convex, and the second side surface of the fifth lens is convex.

[0012] According to an example embodiment of the present application, the sixth lens has positive refractive power or negative refractive power.

[0013] According to an example embodiment of the present application, the first side surface of the sixth lens is concave, and the second side surface of the sixth lens is concave or convex.

[0014] According to an example embodiment of the present application, the first side surface of the sixth lens is convex, and the second side surface of the sixth lens is convex or concave.

[0015] According to an example embodiment of the present application, the fourth lens and the fifth lens are cemented together.

[0016] According to an example embodiment of the present application, the optical lens further comprises a diaphragm located between the second lens and the third lens.

[0017] According to an example embodiment of the present application, all the lenses in the optical lens are spherical glass lenses.

[0018] According to an example embodiment of the present application, the optical lens satisfies: 2≤TTL / F≤4.5; wherein TTL is the total optical length of the optical lens, and F is the total effective focal length of the optical lens.

[0019] According to an example embodiment of the present application, the optical lens satisfies: 0.03≤|(H-Fxθ) / (Fxθ)|≤0.1; wherein H is the image height corresponding to the maximum field angle of the optical lens, θ is the radian value of the maximum field angle of the optical lens, and F is the total effective focal length of the optical lens.

[0020] According to an example embodiment of the present application, the optical lens satisfies: 5° / mm≤FOV / H≤7.5° / mm; wherein FOV is the maximum field angle of the optical lens, and H is the image height corresponding to the maximum field angle of the optical lens.

[0021] According to an example embodiment of the present application, the optical lens satisfies: -1≤F2 / F≤-0.2; wherein F2 is the effective focal length of the second lens, and F is the total effective focal length of the optical lens.

[0022] According to an example embodiment of the present application, the optical lens satisfies: 0.2≤F3 / F≤2; wherein F3 is the effective focal length of the third lens, and F is the total effective focal length of the optical lens.

[0023] According to an example embodiment of the present application, the combined focal length of the fourth lens and the fifth lens is positive.

[0024] According to an example embodiment of the present application, the optical lens satisfies: -2≤(1 / F1+1 / F2) / (1 / F)≤-0.5; wherein F1 is the effective focal length of the first lens, F2 is the effective focal length of the second lens, and F is the total effective focal length of the optical lens.

[0025] According to an example embodiment of the present application, the optical lens satisfies: 0.05≤R11 / F1≤0.45; wherein R11 is the curvature radius of the first side surface of the first lens, and F1 is the effective focal length of the first lens.

[0026] According to an example embodiment of the present application, the optical lens satisfies: 0.05≤R12 / F1≤0.7; wherein R12 is the curvature radius of the second side surface of the first lens, and F1 is the effective focal length of the first lens.

[0027] According to an example embodiment of the present application, the optical lens satisfies: -2≤R31 / R32≤-0.3; wherein R31 is the curvature radius of the first side surface of the third lens, and R32 is the curvature radius of the second side surface of the third lens.

[0028] According to an example embodiment of the present application, the optical lens satisfies: 0.5≤R31 / F≤2.5; wherein R31 is the curvature radius of the first side surface of the third lens, and F is the total effective focal length of the optical lens.

[0029] According to an example embodiment of the present application, the optical lens satisfies: 0.5≤R41 / F≤2; wherein R41 is the curvature radius of the first side surface of the fourth lens, and F is the total effective focal length of the optical lens.

[0030] According to an example embodiment of the present application, the optical lens satisfies: 2≤R12 / d12≤18; wherein R12 is the curvature radius of the second side surface of the first lens, and d12 is the on-axis distance from the second side surface of the first lens to the first side surface of the second lens.

[0031] According to an example embodiment of the present application, the optical lens satisfies: 0.1≤d3 / TTL≤0.25; wherein d3 is the central thickness of the third lens on the optical axis, and TTL is the total optical length of the optical lens.

[0032] According to an example embodiment of the present application, the optical lens satisfies: 0.3≤d3 / F3≤0.9; wherein d3 is the central thickness of the third lens on the optical axis, and F3 is the effective focal length of the third lens.

[0033] According to an exemplary embodiment of this application, the optical lens satisfies: 0.7≤D62 / H≤1.3; where D62 is the aperture diameter on the second side of the sixth lens corresponding to the maximum field of view of the optical lens, and H is the image height corresponding to the maximum field of view of the optical lens.

[0034] According to an exemplary embodiment of this application, the optical lens satisfies at least one of the following relationships: 3≤D11 / H / FOV×180°≤7, 0.03≤BFL / TTL≤0.35, 55°≤FOV×F / H≤70°, 13≤TTL / H / FOV×180°≤17, 0.8≤F / H≤1.8, 0.2≤|F4 / F|≤2.5, 0.1≤|F5 / F|≤5, 0.2≤|F6 / F|≤25, -3≤Fpositive / Fnegative <0, -12≤F1 / F2≤- 3. 0.5≤R11 / D11≤2, 0.5≤R12 / R11≤2.5, -2.5≤R21 / R22≤-0.3, 0.2≤(d1+d12+d2+d23) / TL≤0.5, and 0.1≤(d4+d5) / TL≤0.6; where D11 is the aperture diameter on the first side of the first lens corresponding to the maximum field of view of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, FOV is the maximum field of view of the optical lens, BFL is the optical back focal length of the optical lens, and TTL is the optical... The total optical length of the lens; F is the total effective focal length of the optical lens; F4 is the effective focal length of the fourth lens; F5 is the effective focal length of the fifth lens; F6 is the effective focal length of the sixth lens; F is the effective focal length of the positive lens in the fourth and fifth lenses; F-negative is the effective focal length of the negative lens in the fourth and fifth lenses; F1 is the effective focal length of the first lens; F2 is the effective focal length of the second lens; R11 is the radius of curvature of the first side surface of the first lens; R12 is the radius of curvature of the second side surface of the first lens; R21 is the curvature of the first side surface of the second lens. Radius, R22 is the radius of curvature of the second side surface of the second lens, d1 is the center thickness of the first lens on the optical axis, d12 is the axial distance from the second side surface of the first lens to the first side surface of the second lens, d2 is the center thickness of the second lens on the optical axis, d23 is the axial distance from the second side surface of the second lens to the first side surface of the third lens, TL is the center distance on the optical axis from the first side surface of the first lens to the second side surface of the sixth lens in the optical lens, d4 is the center thickness of the fourth lens on the optical axis, and d5 is the center thickness of the fifth lens on the optical axis.

[0035] According to an exemplary embodiment of this application, the optical lens satisfies at least one of the following relationships: 2.8≤TTL / F≤3.4, 4≤D11 / H / FOV×180°≤6, 0.035≤|(HF×θ) / (F×θ)|≤0.09, 0.05≤BFL / TTL≤0.3, 58°≤FOV×F / H≤65°, 6° / mm≤FOV / H≤7° / mm, 14≤TTL / H / FOV×180°≤16.7, 1.2≤F / H≤1.4, 3.5≤F1 / F≤8.5, -0.8≤F2 / F≤-0.5, 0.5≤F3 / F≤1.5, 0.3≤|F4 / F|≤2.2, 0.2≤|F5 / F|≤4.5, 0.5≤|F6 / F|≤20, 0.5≤F45 / F≤800, -2≤ Fpositive / Fnegative ≤ -0.1, -11 ≤ F1 / F2 ≤ -4, -1.65 ≤ (1 / F1 + 1 / F2) / (1 / F) ≤ -1, 0.85 ≤ R11 / D11 ≤ 1.6, 0.1 ≤ R11 / F1 ≤ 0.4, 0.08 ≤ R12 / F1 ≤ 0.6, 1 < R12 / R11 ≤ 1.6, -2 ≤ R21 / R22 ≤ -0.5, -1.4 ≤ R31 / R3 2≤-0.45, 0.8≤R31 / F≤1.9, 0.7≤R41 / F≤1.7, 2.5≤R12 / d12≤16, 0.15≤d3 / TTL≤0.2, 0.4≤d3 / F3≤0.8, 0.22≤(d1+d12+d2+d23) / TL≤0.4, 0.2≤(d4+d5) / TL≤0.5, and 0.85≤D62 / H≤1.1; where TTL is the total optical length of the optical lens, F is the total effective focal length of the optical lens, D11 is the aperture diameter on the first side of the first lens corresponding to the maximum field of view of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, FOV is the maximum field of view of the optical lens, θ is the radian value of the maximum field of view of the optical lens, BFL is the optical back focal length of the optical lens, F1 is the effective focal length of the first lens, F2 is the effective focal length of the second lens, F3 is the effective focal length of the third lens, F4 is the effective focal length of the fourth lens, F5 is the effective focal length of the fifth lens, F6 is the effective focal length of the sixth lens, F45 is the combined focal length of the fourth and fifth lenses, F is the effective focal length of the positive lens in the fourth and fifth lenses, F-negative is the effective focal length of the negative lens in the fourth and fifth lenses, R11 is the radius of curvature of the first side of the first lens, and R12 is the radius of curvature of the second side of the first lens. R21 is the radius of curvature of the first side surface of the second lens, R22 is the radius of curvature of the second side surface of the second lens, R31 is the radius of curvature of the first side surface of the third lens, R32 is the radius of curvature of the second side surface of the third lens, R41 is the radius of curvature of the first side surface of the fourth lens, d12 is the axial distance between the second side surfaces of the first and third lenses, d3 is the center thickness of the third lens on the optical axis, d1 is the center thickness of the first lens on the optical axis, d2 is the center thickness of the second lens on the optical axis, d23 is the axial distance between the second side surface of the second lens and the first side surface of the third lens, TL is the center distance on the optical axis between the first side surface of the first lens and the second side surface of the sixth lens in the optical lens, d4 is the center thickness of the fourth lens on the optical axis, d5 is the center thickness of the fifth lens on the optical axis, and D62 is the aperture diameter on the second side surface of the sixth lens corresponding to the maximum field of view of the optical lens.

[0036] According to an exemplary embodiment of this application, the optical lens satisfies at least one of the following relationships: 0.6≤F3 / F≤1.25, 0.7≤|F6 / F|≤18, 0.153≤d3 / TTL≤0.195, and 0.88≤D62 / H≤1.06; where F3 is the effective focal length of the third lens, F is the total effective focal length of the optical lens, F6 is the effective focal length of the sixth lens, d3 is the center thickness of the third lens on the optical axis, TTL is the total optical length of the optical lens, D62 is the aperture of the second side of the sixth lens corresponding to the maximum field of view of the optical lens, and H is the image height corresponding to the maximum field of view of the optical lens.

[0037] According to an exemplary embodiment of this application, the optical lens satisfies at least one of the following relationships: 2.912≤TTL / F≤3.259, 4.341≤D11 / H / FOV×180°≤5.607, 0.047≤|(HF×θ) / (F×θ)|≤0.08, 0.079≤BFL / TTL≤0.233, 60.091°≤FOV×F / H≤62.291°, 6.378° / mm≤FOV / H≤6.491° / mm , 14.48≤TTL / H / FOV×180°≤16.151, 1.273≤F / H≤1.32, 3.855≤F1 / F≤6.857, -0.741≤F2 / F≤-0.585, 0.759≤F 3 / F≤1.16, 0.506≤|F4 / F|≤1.686, 0.349≤|F5 / F|≤3.295, 0.939≤|F6 / F|≤11.862, 0.97≤F45 / F≤585.845, - 1.452≤Fpositive / Fnegative≤-0.183, -9.819≤F1 / F2≤-5.334, -1.498≤(1 / F1+1 / F2) / (1 / F)≤-1.11, 0.973≤R11 / D11≤1.418, 0.166≤R11 / F1≤0.34, 0.188≤R12 / F1≤0.501, 1.13<R12 / R11≤1.476, -1.824≤R21 / R22≤-0.795, -1.2≤R 31 / R32≤-0.626, 1.099≤R31 / F≤1.717, 0.83≤R41 / F≤1.483, 3.895≤R12 / d12≤12.512, 0.161≤d3 / TTL≤0.186, 0.451≤d3 / F3≤0.699, 0.252≤(d1+d12+d2+d23) / TL≤0.366, 0.226≤(d4+d5) / TL≤0.41, and 0.915≤D62 / H≤1.029; wherein, TTL is the total optical length of the optical lens, F is the total effective focal length of the optical lens, D11 is the clear aperture on the first side of the first lens corresponding to the maximum field angle of the optical lens, H is the image height corresponding to the maximum field angle of the optical lens, FOV is the maximum field angle of the optical lens, θ is the radian value of the maximum field angle of the optical lens, BFL is the optical back focal length of the optical lens, F1 is the effective focal length of the first lens, F2 is the effective focal length of the second lens, F3 is the effective focal length of the third lens, F4 is the effective focal length of the fourth lens, F5 is the effective focal length of the fifth lens, F6 is the effective focal length of the sixth lens, F45 is the combined focal length of the fourth lens and the fifth lens, Fpositive is the effective focal length of the positive lens in the fourth lens and the fifth lens, Fnegative is the effective focal length of the negative lens in the fourth lens and the fifth lens, R11 is the radius of curvature of the first side of the first lens, R12 is the radius of curvature of the second side of the first lens, R21 is the radius of curvature of the first side of the second lens, R22 is the radius of curvature of the second side of the second lens, R31 is the radius of curvature of the first side of the third lens, R32 is the radius of curvature of the second side of the third lens, R41 is the radius of curvature of the first side of the fourth lens, d12 is the on-axis distance from the second side of the first lens to the first side of the second lens, d3 is the central thickness of the third lens on the optical axis, d1 is the central thickness of the first lens on the optical axis, d2 is the central thickness of the second lens on the optical axis, d23 is the on-axis distance from the second side of the second lens to the first side of the third lens, TL is the central distance from the first side of the first lens to the second side of the sixth lens on the optical axis in the optical lens, d4 is the central thickness of the fourth lens on the optical axis, d5 is the central thickness of the fifth lens on the optical axis, and D62 is the clear aperture on the second side of the sixth lens corresponding to the maximum field angle of the optical lens.

[0038] The second aspect of the present application provides an electronic device including the optical lens in the above example embodiments, and at least one of an imaging element and a light source, wherein the imaging element is configured to convert an optical image or optical information formed by the optical lens into an electrical signal, and the light source is located on the second side of the optical lens, and light emitted by the light source is projected to the first side of the optical lens after passing through the optical lens, and forms an image or illuminates an area on the first side of the optical lens.

[0039] In a third aspect, the present application provides an optical lens comprising, in order from a first side to a second side along an optical axis, a first lens having positive refractive power, a first side of the first lens being convex, a second side of the first lens being concave; a second lens having negative refractive power, a first side of the second lens being concave, a second side of the second lens being concave; a third lens having positive refractive power, a first side of the third lens being convex, a second side of the third lens being convex; a fourth lens having refractive power; a fifth lens having refractive power, a sign of the refractive power of the fifth lens being opposite to a sign of the refractive power of the fourth lens; and a sixth lens having refractive power; wherein a number of lenses having refractive power in the optical lens is six; the optical lens satisfies one or more of the following relations: 3≤F1 / F≤10, 0.05≤R11 / F1≤0.45, 0.05≤R12 / F1≤0.7, and 5° / mm≤FOV / H≤7.5° / mm; wherein F1 is an effective focal length of the first lens, F is a total effective focal length of the optical lens, R11 is a radius of curvature of the first side of the first lens, R12 is a radius of curvature of the second side of the first lens, FOV is a maximum field of view angle of the optical lens, and H is an image height corresponding to the maximum field of view angle of the optical lens.

[0040] In this way, the optical lens of the present application adopts six lenses with optical power, the first side light first enters the first side of the first lens, and then exits from the second side of the first lens: the first lens has positive optical power, the first side is convex, and the second side is concave, which can effectively converge light, avoid excessive divergence of object light, and collect as much light as possible into the rear optical system, while ensuring that a large amount of light enters, which is also conducive to improving the total light flux and illumination of the lens as a whole; at the same time, by controlling the effective focal length and / or the curvature radii of the two sides of the first lens and the total effective focal length of the optical lens, i.e. 3≤F1 / F≤10, 0.05≤R11 / F1≤0.45 and / or 0.05≤R12 / F1≤0.7, the focal length and the curvature radii of the two sides of the first lens are reasonably set, which is conducive to better collecting large field of view light, so as to realize small caliber at the front end while meeting long focal length; at the same time, the light can enter the second lens smoothly, which is conducive to the regulation of the rear light, and further realizes high resolution. The divergent light exiting from the first lens enters the second lens: the second lens has negative optical power, the first side is concave, and the second side is concave, which has a diverging effect on light, can disperse the center light and the edge light of each field of view, expand the aperture of the rear light, and increase the system illumination; at the same time, the double-concave structure of the second lens can also disperse the light better, which is conducive to the correction of the aberration of the edge light and the center light, realizes high resolution, and under the same viewing angle condition, the light exiting from the second side of the second lens can make the subsequent optical system have a larger light receiving surface, realize a larger light amount, and increase the brightness of the image surface. The light exiting from the second lens enters the third lens: the third lens has positive optical power, the first side is convex, and the second side is convex, which can quickly converge the light with a diverging trend in the front, change the light trend, and make the light close to the optical axis, which is the key light turning point in this architecture, which is conducive to the smooth entry of the light into the rear optical system, reduces the rear aperture, and improves the resolution quality. The light exiting from the third lens enters the fourth lens and the fifth lens: the fourth lens and the fifth lens have opposite optical power, which is more conducive to the smooth transition of light and improves the resolution quality. The light exiting from the fifth lens can smoothly reach the imaging surface after entering the sixth lens, realizing high resolution; at the same time, by controlling the maximum field of view angle and the corresponding image height of the optical lens, i.e. 5° / mm≤FOV / H≤7.5° / mm, the maximum field of view angle and the corresponding image height of the optical lens are reasonably controlled, which is conducive to realizing large field of view, and also taking into account large image surface.

[0041] In a fourth aspect, the present application provides an optical lens comprising, in order from a first side to a second side along an optical axis, a first lens having positive refractive power, a first side of the first lens being convex, a second side of the first lens being concave; a second lens having negative refractive power, a first side of the second lens being concave, a second side of the second lens being concave; a third lens having positive refractive power, a first side of the third lens being convex, a second side of the third lens being convex; a fourth lens having refractive power; a fifth lens having refractive power, a sign of the refractive power of the fifth lens being opposite to a sign of the refractive power of the fourth lens; and a sixth lens having refractive power; wherein a number of lenses having refractive power in the optical lens is six; the optical lens satisfies one or more of the following relationships: -2≤R31 / R32≤-0.3, 0.5≤R31 / F≤2.5, and 0.2≤F3 / F≤2; wherein R31 is a radius of curvature of the first side of the third lens, R32 is a radius of curvature of the second side of the third lens, F is a total effective focal length of the optical lens, and F3 is an effective focal length of the third lens.

[0042] In this way, the optical lens of the present application adopts six lenses with optical power, the first side light first enters the first side of the first lens, and then exits from the second side of the first lens: the first lens has positive optical power, the first side is convex, and the second side is concave, which can effectively converge light, avoid excessive divergence of object light, and collect as much field of view light as possible into the rear optical system. The divergent light exiting the first lens enters the second lens: the second lens has negative optical power, the first side is concave, and the second side is concave, which has a diverging effect on light, can disperse the center light and the edge light of each field of view, expand the aperture of the rear light, and increase the system illumination; at the same time, the double-concave structure of the second lens can also disperse the light better, which is beneficial to the correction of edge light and center light aberration, realizes high resolution, and under the same viewing angle condition, the light exiting from the second side of the second lens can make the subsequent optical system have a larger light receiving surface, realize a larger light amount, and increase the image plane brightness. The light exiting the second lens enters the third lens: the third lens has positive optical power, the first side is convex, and the second side is convex, which can quickly converge the light that has a divergent trend as a whole, change the light trend, and make the light close to the optical axis, which is the key light turning point in this architecture, which is beneficial to the smooth entry of light into the rear optical system, reduces the rear aperture, and improves the resolution quality; at the same time, by controlling the relationship between the curvature radii of the two sides of the third lens and / or the total effective focal length of the optical lens, i.e. -2≤R31 / R32≤-0.3, 0.5≤R31 / F≤2.5 and / or 0.2≤F3 / F≤2, the focal length of the third lens is positive and small in value, which can quickly converge light, and / or by reasonably setting the curvature radii of the two sides of the third lens, the light can be reasonably transitioned, which is beneficial to the system to reduce sensitivity and realize high resolution and miniaturization. The light exiting the third lens enters the fourth lens and the fifth lens: the fourth lens and the fifth lens have opposite optical power, which is more beneficial to the smooth transition of light and improves the resolution quality. The light exiting the fifth lens enters the sixth lens and can smoothly reach the imaging plane to realize high resolution.

[0043] In a fifth aspect, the present application provides an optical lens comprising, in order from a first side to a second side along an optical axis, a first lens having positive refractive power, a first side of the first lens being convex, a second side of the first lens being concave; a second lens having negative refractive power, a first side of the second lens being concave, a second side of the second lens being concave; a third lens having positive refractive power, a first side of the third lens being convex, a second side of the third lens being convex; a fourth lens having refractive power; a fifth lens having refractive power, a sign of the refractive power of the fifth lens being opposite to a sign of the refractive power of the fourth lens; and a sixth lens having refractive power; wherein a number of lenses having refractive power in the optical lens is six; the optical lens satisfies one or more of the following relationships: 0.2≤F3 / F≤2, 0.3≤d3 / F3≤0.9, and 0.1≤d3 / TTL≤0.25; wherein d3 is a center thickness of the third lens along the optical axis, F3 is an effective focal length of the third lens, F is a total effective focal length of the optical lens, and TTL is an optical total track length of the optical lens.

[0044] In this way, the optical lens of the present application adopts six lenses with optical power, the first side light first enters the first side of the first lens, and then exits from the second side of the first lens: the first lens has positive optical power, the first side is convex, and the second side is concave, which can effectively converge the light, avoid the over divergence of the object side light, and collect as much as possible the large field of view light into the rear optical system, while ensuring the entry of a large amount of light, it is also beneficial to improve the overall light throughput and illumination of the lens. The divergent light exiting the first lens enters the second lens: the second lens has negative optical power, the first side is concave, and the second side is concave, which has a diverging effect on the light, can disperse the central light and the edge light of each field of view, expand the aperture of the rear light, and increase the system illumination; at the same time, the double-concave structure of the second lens can also disperse the light better, which is beneficial to the correction of the aberration of the edge light and the central light, realizes high resolution, and under the same viewing angle condition, the light exiting from the second side of the second lens can make the subsequent optical system have a larger light receiving surface, realize a larger light amount, and increase the image plane brightness. The light exiting the second lens enters the third lens: the third lens has positive optical power, the first side is convex, and the second side is convex, which can quickly converge the light with a divergent trend in the front, change the light trend, make the light close to the optical axis, which is the key light turning point in this architecture, is beneficial to the smooth entry of the light into the rear optical system, reduces the rear aperture, and improves the resolution quality; at the same time, by controlling the ratio of the central thickness of the third lens to the effective focal length of the third lens and / or the optical total length of the optical lens, i.e. 0.2≤F3 / F≤2, 0.3≤d3 / F3≤0.9 and / or 0.1≤d3 / TTL≤0.25, the focal length of the third lens is positive and small in value, which can quickly converge the light, and by reasonably setting the central thickness of the third lens, it is beneficial to increase the optical path, smooth the light trend, reduce the system sensitivity, and realize high resolution; at the same time, it can effectively converge the light in front, reduce the rear aperture, and realize miniaturization. The light exiting the third lens enters the fourth lens and the fifth lens: the fourth lens and the fifth lens have opposite sign optical power, which is more beneficial to the smooth transition of the light and improves the resolution quality. The light exiting the fifth lens enters the sixth lens and can smoothly reach the imaging plane, realizing high resolution. BRIEF DESCRIPTION OF DRAWINGS

[0045] Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments made with reference to the accompanying drawings. Among which:

[0046] Figure 1 The structure schematic diagram of the optical lens according to embodiment 1 of the present application is shown;

[0047] Figure 2A modulation transfer function curve (MTF) of the optical lens according to Embodiment 1 of the present application is shown;

[0048] Figure 3 A structural schematic diagram of the optical lens according to Embodiment 2 of the present application is shown;

[0049] Figure 4 A modulation transfer function curve of the optical lens according to Embodiment 2 of the present application is shown;

[0050] Figure 5 A structural schematic diagram of the optical lens according to Embodiment 3 of the present application is shown;

[0051] Figure 6 A modulation transfer function curve of the optical lens according to Embodiment 3 of the present application is shown;

[0052] Figure 7 A structural schematic diagram of the optical lens according to Embodiment 4 of the present application is shown;

[0053] Figure 8 A modulation transfer function curve of the optical lens according to Embodiment 4 of the present application is shown;

[0054] Figure 9 A structural schematic diagram of the optical lens according to Embodiment 5 of the present application is shown;

[0055] Figure 10 A modulation transfer function curve of the optical lens according to Embodiment 5 of the present application is shown;

[0056] Figure 11 A structural schematic diagram of the optical lens according to Embodiment 6 of the present application is shown;

[0057] Figure 12 A modulation transfer function curve of the optical lens according to Embodiment 6 of the present application is shown;

[0058] Figure 13 A structural schematic diagram of the optical lens according to Embodiment 7 of the present application is shown;

[0059] Figure 14 A modulation transfer function curve of the optical lens according to Embodiment 7 of the present application is shown;

[0060] Figure 15 A structural schematic diagram of the optical lens according to Embodiment 8 of the present application is shown;

[0061] Figure 16 A modulation transfer function curve of the optical lens according to Embodiment 8 of the present application is shown;

[0062] Figure 17 A structural diagram of an optical lens according to Embodiment 9 of the present application is shown;

[0063] Figure 18 A modulation transfer function curve of the optical lens according to Embodiment 9 of the present application is shown;

[0064] Figure 19 A structural diagram of an optical lens according to Embodiment 10 of the present application is shown;

[0065] Figure 20 A modulation transfer function curve of the optical lens according to Embodiment 10 of the present application is shown;

[0066] Figure 21 A structural diagram of an optical lens according to Embodiment 11 of the present application is shown;

[0067] Figure 22 A modulation transfer function curve of the optical lens according to Embodiment 11 of the present application is shown;

[0068] Figure 23 A structural diagram of an optical lens according to Embodiment 12 of the present application is shown;

[0069] Figure 24 A modulation transfer function curve of the optical lens according to Embodiment 12 of the present application is shown;

[0070] Figure 25 A structural diagram of an optical lens according to Embodiment 13 of the present application is shown;

[0071] Figure 26 A modulation transfer function curve of the optical lens according to Embodiment 13 of the present application is shown;

[0072] Figure 27 A structural diagram of an optical lens according to Embodiment 14 of the present application is shown;

[0073] Figure 28 A modulation transfer function curve of the optical lens according to Embodiment 14 of the present application is shown;

[0074] Figure 29 A structural diagram of an optical lens according to Embodiment 15 of the present application is shown;

[0075] Figure 30 A modulation transfer function curve of the optical lens according to Embodiment 15 of the present application is shown. DETAILED DESCRIPTION

[0076] For a better understanding of the present application, various aspects of the present application will be described in more detail below with reference to the accompanying drawings. It is to be noted that these detailed description is merely descriptive of exemplary embodiments of the present application, and does not limit the scope of the present application in any manner. Throughout the specification, like drawing reference numerals will be understood to refer to like parts throughout the specification and the drawings.

[0077] It is to be noted that the expressions first, second, third, etc. are used in this specification only to distinguish one feature from another, and do not represent any limitation on the features. Thus, the first lens discussed below can also be referred to as the second lens or the third lens without departing from the teachings of the present application.

[0078] In the drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for ease of explanation. Specifically, the shape of the spherical surface or aspherical surface shown in the drawings is shown by way of example. That is, the shape of the spherical surface or aspherical surface is not limited to the shape of the spherical surface or aspherical surface shown in the drawings. The drawings are merely examples and are not drawn to scale.

[0079] In this specification, the paraxial region refers to a region near the optical axis. If a lens surface is convex and the position of the convex surface is not specified, it means that the lens surface is convex at least in the paraxial region. If a lens surface is concave and the position of the concave surface is not specified, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the first side is referred to as the first side surface of the lens, and the surface of each lens closest to the second side is referred to as the second side surface of the lens.

[0080] It is also to be understood that the use of the terms "include", "includes" and / or "including" when used in this specification, specifies the presence of stated features, elements and / or components, but do not preclude the presence or addition of one or more other features, elements, components and / or groups thereof. In addition, when describing the embodiments of the present application, the use of "may" means "one or more embodiments of the present application". Also, the term "exemplary" is intended to mean an example or an illustration.

[0081] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It is also to be understood that the terms should be interpreted as having a meaning that is 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.

[0082] It is to be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0083] The features, principles, and other aspects of the present application are described in detail below.

[0084] The optical lens according to the exemplary embodiments of the present application can include, for example, six lenses with refractive powers, i.e., a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, which are arranged in order from a first side to a second side along an optical axis.

[0085] In the exemplary embodiments, the optical lens provided by the present application can be used as a light receiving lens or a light emitting lens. The light receiving lens is generally used to collect light from an object space to form detection information, including but not limited to imaging, laser point cloud, etc. The light emitting lens is generally used to transmit light from a light emitting unit to the object space. The light transmitted to the object space can be divided into projection light for forming a projection image or detection light for detecting target object information, etc. according to the role of the light.

[0086] It can be understood that when the optical lens provided by the present application is used as a light receiving lens such as a camera lens, a laser radar receiving end lens, a microscope lens, or a telescope lens, the "first side" referred to herein can refer to an object side, and the "second side" can refer to an image side (e.g., a side where a photosensor or a retina is located), i.e., light from the object side can be imaged on the image side. The camera 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 by the present application is used as a light emitting lens such as a projection lens or a laser radar transmitting end lens, the "first side" referred to herein can refer to an object side, and the "second side" can refer to a light source side.

[0087] In some possible embodiments, the optical lens provided by the present application can also simultaneously assume light receiving and light emitting functions. For example, the optical lens provided by the present application is used in a laser radar system that shares a light path, and the optical lens simultaneously assumes the functions of transmitting laser and receiving a radar return beam. For another example, the optical lens provided by the present application is used in a system that integrates optical communication and radar, and the optical lens simultaneously assumes the functions of transmitting a modulated light signal and receiving a radar return beam.

[0088] In the example embodiment, the first lens can have positive refractive power, the first side thereof can be convex, and the second side thereof can be concave. The first lens is a positive lens, which can effectively converge light rays, can avoid excessive divergence of object-side light rays, and can collect as much light rays as possible into the rear optical system, while the entry of a large amount of light rays is also conducive to improving the overall light throughput and illumination of the lens. The first side of the first lens is provided as a convex surface, which can collect as much light rays as possible into the rear optical system, and in actual application scenarios (such as rainy and snowy weather), it is conducive to the sliding of water droplets and reduces the impact on the imaging quality. The second side of the first lens is provided as a concave surface, so that the large-angle light rays from the first side of the first lens are rapidly diverged, which is conducive to aberration correction of the large-angle light rays by the rear optical system, and high resolution is achieved.

[0089] In the example embodiment, the second lens can have negative refractive power, the first side thereof can be concave, and the second side thereof can be concave. The second lens is a negative lens, which has a diverging effect on light rays, can disperse the central light rays and the edge light rays of each field of view, expand the rear light aperture, and increase the system illumination; at the same time, the double-concave structure of the second lens can also better diverge the light rays, which is conducive to the correction of the aberration of the edge light rays and the central light rays, high resolution is achieved, and under the same viewing angle condition, the light rays emitted through the second side of the second lens can make the subsequent optical system have a larger light receiving surface, achieve a larger light entry amount, and increase the image plane brightness. The first side of the second lens is provided as a concave surface, which can be matched with the second side provided as a concave surface in the first lens, is conducive to better receiving the front light rays by the second lens, makes the light rays transition smoothly, reduces the light ray sensitivity, improves the resolution quality, reduces the light energy loss, and improves the illumination of the peripheral field of view.

[0090] In the example embodiment, the third lens can have positive refractive power, the first side thereof can be convex, and the second side thereof can be convex. The third lens is a positive lens, which can quickly converge the light rays that have a generally diverging trend in the front, changes the light ray trend, so that the light rays are close to the optical axis, which is a key light ray turning point in the architecture, is conducive to the smooth entry of the light rays into the rear optical system, reduces the rear aperture, and improves the resolution quality. The first side of the third lens is provided as a convex surface, which has a converging effect on the light rays, can further reduce aberration, is conducive to achieving high resolution, and improves the resolution capability of the optical system. The second side of the third lens is provided as a convex surface, so that the edge field of view light rays continue to converge, which is conducive to reducing the rear aperture, achieving miniaturization, and making the rear end light rays have a stable trend, which can smoothly enter the fourth lens, reduces the light ray sensitivity, and improves the resolution quality.

[0091] In an exemplary embodiment, the fourth lens can have positive or negative focal power, the first side surface thereof can be convex, and the second side surface thereof can be convex or concave.

[0092] In a first example, the fourth lens can have positive focal power, the first side surface thereof can be convex, and the second side surface thereof can be convex. The fourth lens is a positive lens and has a biconvex shape, further converging the front light rays into the rear optical system, which is beneficial to realize miniaturization and high resolution of the rear end and improve the resolution quality of the optical system.

[0093] In a second example, the fourth lens can have negative focal power, the first side surface thereof can be convex, and the second side surface thereof can be concave. The fourth lens is a positive lens and has a convex-concave shape, which can appropriately diverge the front converging light rays, so that the light rays smoothly transition to the rear optical system and improve the imaging quality.

[0094] In an exemplary embodiment, the fifth lens can have positive or negative focal power, but the fifth lens and the fourth lens have opposite positive or negative attributes.

[0095] In a first example, the fifth lens can have negative focal power, the first side surface thereof can be concave, and the second side surface thereof can be concave. The fifth lens is a negative lens and has a biconcave shape, which can receive the light rays continuously converged by the third lens and the fourth lens for divergence, so as to pull apart the edge light rays, improve the peripheral illumination, realize large image surface imaging, and also be beneficial to the dispersion of the edge light rays and realize small distortion.

[0096] In a second example, the fifth lens can have negative focal power, the first side surface thereof can be concave, and the second side surface thereof can be convex. The fifth lens is a negative lens and has a concave-convex shape, which can receive the light rays continuously converged by the third lens and the fourth lens for appropriate divergence, so that the light rays exit smoothly, which is beneficial to improve the aberration and realize high resolution.

[0097] In a third example, the fifth lens can have positive focal power, the first side surface thereof can be convex, and the second side surface thereof can be convex. The fifth lens is a positive lens and has a biconvex shape, which can appropriately converge the front smoothly transitioned light rays, which is beneficial to realize miniaturization and high resolution of the rear end and improve the resolution capability of the optical system.

[0098] It is worth noting that the fourth lens and the fifth lens are glued to each other to form a glued lens. In this way, although the light rays first pass through the first lens and the second lens and then show a divergent trend, and then pass through the third lens to quickly converge to change the trend of the light rays, at this time, more optical path differences are introduced, which makes it difficult to completely eliminate chromatic aberration; but the present application not only makes the light rays enter the fourth lens more gently when exiting from the third lens by reasonably matching the focal power and surface shape of the first lens, the second lens and the third lens; but also is more conducive to correcting chromatic aberration by setting the fourth lens and the fifth lens as a glued lens, so that various aberrations of the optical system are fully corrected, so as to improve the resolution and optimize the optical performance such as distortion, CRA (chief ray angle) on the premise of compact structure.

[0099] In addition, the gluing of the fourth lens and the fifth lens can effectively eliminate the influence of ghost images on the lens, so that the lens can ensure high resolution quality on the basis of eliminating ghost images. It should be understood that the glued lens has a higher refractive index (relative to the positive lens) as a negative lens, so that the light rays can be effectively and smoothly converged at the end, so that the light rays reach the imaging surface smoothly, reducing the overall weight and cost; the glued lens can also reduce the light loss caused by reflection between the lenses, and the use of high and low refractive index matching is conducive to the rapid transition of the front light, increases the aperture of the stop, and improves the light throughput; the glued lens can reduce the air gap between the two lenses, so that the overall structure of the optical system is compact, and the tolerance sensitivity problem of the lens unit caused by the assembly process is reduced.

[0100] In the exemplary embodiment, the sixth lens can have positive focal power or negative focal power.

[0101] In the first example, the sixth lens can have negative focal power, and the first side surface thereof can be convex, and the second side surface thereof can be concave. The sixth lens is a negative lens, which diverges the light rays exiting from the fourth lens and the fifth lens, further adjusts the divergence of the front light, increases the illumination of the peripheral field of view, and improves the resolution quality. The first side surface of the sixth lens is set to be convex, so that the light rays have a small incidence angle, which is conducive to more light rays entering the optical system to achieve high throughput; at the same time, it is conducive to the convergence of the incident light rays transmitted by the front optical system, quickly reaching the image plane, and is conducive to realizing a short TTL (total optical length). The second side surface of the sixth lens is set to be concave, which diverges the light rays so that the light rays can reach a higher imaging position to realize large image plane imaging; at the same time, the spacing between the light rays is widened, further realizing small distortion.

[0102] In the second example, the sixth lens can have a negative focal power, the first side surface thereof can be concave, and the second side surface thereof can be concave. The sixth lens is a negative lens, which diverges the light rays emitted by the fourth lens and the fifth lens, further adjusts the divergence of the front light rays, increases the illumination of the peripheral field of view, and improves the resolution. The first side surface of the sixth lens is concave, which can diverge the front light rays that tend to converge, reduces the optical path difference, and improves the imaging quality. The second side surface of the sixth lens is concave, which can further effectively diverge the light rays, so that the light rays can reach a higher imaging position to achieve large image surface imaging; meanwhile, the spacing between the light rays is widened, further realizing small distortion.

[0103] In the third example, the sixth lens can have a negative focal power, the first side surface thereof can be concave, and the second side surface thereof can be convex. The sixth lens is a negative lens, which diverges the light rays emitted by the fourth lens and the fifth lens, further adjusts the divergence of the front light rays, increases the illumination of the peripheral field of view, and improves the resolution. The sixth lens is a negative lens and has a concave-convex shape, which first diverges the front light rays that tend to converge through the concave first side surface, so that the light rays can reach a higher imaging position to achieve large image surface imaging and improve the imaging quality, and then appropriately converges the light rays diverged by the first side surface through the convex second side surface, so as to meet the high resolution while realizing a small rear-end aperture.

[0104] In the fourth example, the sixth lens can have a positive focal power, the first side surface thereof can be convex, and the second side surface thereof can be concave. The sixth lens is a positive lens, which can further converge the front light rays, shorten the distance to the imaging surface, realize miniaturization, reduce light loss, and improve the imaging quality. The first side surface of the sixth lens is convex, which makes the light rays have a small incidence angle, is conducive to more light rays entering the optical system to realize high flux, and is conducive to the front optical system converging the incident light rays to quickly reach the image surface, which is conducive to realizing a short TTL. The second side surface of the sixth lens is concave, which can appropriately diverge the light rays converged by the first side surface, so that the incidence angle of the light rays entering the chip is reduced, which is helpful to improve the illumination and the imaging quality.

[0105] In the fifth example, the sixth lens can have a positive focal power, the first side surface thereof can be concave, and the second side surface thereof can be convex. The sixth lens is a positive lens, which can further converge the front light rays, shorten the distance to the imaging surface, realize miniaturization, reduce light loss, and improve the imaging quality. The sixth lens is a positive lens and has a concave-convex shape, which first better receives the front light rays through the concave first side surface, so that the light rays smoothly transition, reduces the sensitivity of the system, appropriately diverges the light rays, improves the edge illumination, and reduces the distortion; and then appropriately converges the light rays diverged by the first side surface through the convex second side surface, which is conducive to the light rays approximately vertically reaching the chip, and is helpful to reduce the CRA and improve the imaging quality.

[0106] In the sixth example, the sixth lens can have positive refractive power, the first side surface thereof can be convex, for example, and the second side surface thereof can be convex. The sixth lens is a positive lens, capable of further adjusting the convergence of the front light rays, shortening the distance to the imaging surface, achieving miniaturization, reducing light loss, and improving imaging quality. The sixth lens is a positive lens and has a biconvex shape, the first side surface being convex allows the light rays to have a small incidence angle, which is conducive to more light rays entering the optical system and achieving high flux, and is also conducive to the front optical system transmitting the incident light rays to converge quickly to the imaging surface, which is conducive to achieving a short TTL; the second side surface being convex further converges the front light rays and reduces the rear aperture.

[0107] Notably, the sixth lens is provided with at least one concave surface, i.e., at least one of the first side surface and the second side surface of the sixth lens is concave, which is more conducive to the regulation of light rays and facilitates the improvement of imaging quality and the achievement of high resolution.

[0108] In the example embodiment, the optical lens can further include a diaphragm, which can be disposed between the second lens and the third lens, for example. By disposing the diaphragm between the second lens and the third lens, the light rays entering the optical system can be effectively collected, the lens aperture at the front end and the rear end of the optical system can be reduced, the light flux can be increased, and the sensitivity of the optical lens during assembly can be reduced. It should be understood that the diaphragm disposed between the second lens and the third lens is only exemplary, and the present application does not specifically limit this. According to actual needs, the diaphragm can also be disposed at other positions.

[0109] Notably, all the lenses in the optical lens of the present application can be implemented as spherical glass lenses, i.e., the optical lens can use all-glass spherical lenses to effectively reduce the cost on the basis of meeting the temperature performance and high resolution. It should be understood that when the resolution performance is the focus, the optical lens can also increase aspheric surfaces to further improve the resolution quality; when the cost is the focus, the glass lenses can be replaced with plastic lenses to reduce the cost of the lens.

[0110] In addition, in order to balance the aberrations of the central field of view and the edge field of view and improve the resolution, the optical lens of the present application can also use reverse curvature lenses, which will not be described herein again.

[0111] In the example embodiment, the optical lens can further include a filter between the sixth lens and the imaging surface to filter light rays having different wavelengths. It should be understood that the optical lens can also dispose a protective glass between the filter and the imaging surface according to actual needs to prevent the internal elements (e.g., a chip) of the optical lens from being damaged.

[0112] In the example embodiment, the optical lens can further include a photosensitive element disposed on the second side. Optionally, the photosensitive element disposed on the second side can be a charge-coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS).

[0113] In the example embodiment, the total optical length TTL of the optical lens and the total effective focal length F of the optical lens can satisfy: 2≤TTL / F≤4.5. Preferably, 2.8≤TTL / F≤3.4. Further, 2.912≤TTL / F≤3.259. By controlling the relationship, the ratio between the total optical length and the total effective focal length of the optical lens is reasonably controlled, which is conducive to miniaturization and long focal length. It can be understood that the preferred range (such as 2.8≤TTL / F≤3.4) and the further range (such as 2.912≤TTL / F≤3.259) of each relationship disclosed in the present application can achieve better results and achieve higher imaging quality.

[0114] In the example embodiment, the light aperture D11 on the first side of the first lens corresponding to the maximum field angle of the optical lens, the image height H corresponding to the maximum field angle of the optical lens, and the maximum field angle FOV of the optical lens can satisfy: 3≤D11 / H / FOV×180°≤7. Preferably, 4≤D11 / H / FOV×180°≤6. Further, 4.341≤D11 / H / FOV×180°≤5.607. By controlling the relationship, the front aperture of the optical lens, the maximum field angle of the optical lens, and the corresponding image height are reasonably controlled, which is conducive to meeting high resolution while realizing small aperture at the front end of the lens, and taking into account large field of view and large image surface.

[0115] In the example embodiment, the image height H corresponding to the maximum field angle of the optical lens, the total effective focal length F of the optical lens, and the radian value θ of the maximum field angle of the optical lens can satisfy: 0.03≤|(H-F×θ) / (F×θ)|≤0.1. Preferably, 0.035≤|(H-F×θ) / (F×θ)|≤0.09. Further, 0.047≤|(H-F×θ) / (F×θ)|≤0.08. By controlling the relationship, the image height, the total effective focal length, and the radian value corresponding to the maximum field angle of the optical lens are reasonably controlled, which is conducive to meeting high resolution while realizing small distortion and more truly restoring the captured objects and scenes.

[0116] In the example embodiments, the optical back focal length BFL of the optical lens and the total track length TTL of the optical lens can satisfy: 0.03≤BFL / TTL≤0.35. Preferably, 0.05≤BFL / TTL≤0.3. Further, 0.079≤BFL / TTL≤0.233. By controlling the relationship, the optical back focal length and the total track length TTL of the optical lens are reasonably controlled, which is conducive to flexibly adjusting the lens thickness and air gap, achieving miniaturization while taking into account the appropriate back focal length.

[0117] In the example embodiments, the maximum field of view FOV of the optical lens, the total effective focal length F of the optical lens, and the image height H corresponding to the maximum field of view of the optical lens can satisfy: 55°≤FOV×F / H≤70°. Preferably, 58°≤FOV×F / H≤65°. Further, 60.091°≤FOV×F / H≤62.291°. By controlling the relationship, the total effective focal length, the image height, and the field of view of the optical lens are controlled, which is conducive to meeting high resolution while achieving long focal length and taking into account large field of view characteristics.

[0118] In the example embodiments, the maximum field of view FOV of the optical lens and the image height H corresponding to the maximum field of view of the optical lens can satisfy: 5° / mm≤FOV / H≤7.5° / mm. Preferably, 6° / mm≤FOV / H≤7° / mm. Further, 6.378° / mm≤FOV / H≤6.491° / mm. By controlling the relationship, the maximum field of view and the corresponding image height of the optical lens are reasonably controlled, which is conducive to achieving a large field of view and taking into account a large image surface.

[0119] In the example embodiments, the total track length TTL of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view FOV of the optical lens can satisfy: 13≤TTL / H / FOV×180°≤17. Preferably, 14≤TTL / H / FOV×180°≤16.7. Further, 14.48≤TTL / H / FOV×180°≤16.151. By controlling the relationship, the total track length, the maximum field of view, and the corresponding image height of the optical lens are reasonably controlled, which is conducive to achieving miniaturization while taking into account large field of view and large image surface.

[0120] In the example embodiments, the total effective focal length F of the optical lens and the image height H corresponding to the maximum field of view of the optical lens can satisfy: 0.8≤F / H≤1.8. Preferably, 1.2≤F / H≤1.4. Further, 1.273≤F / H≤1.32. By controlling the relationship, the total effective focal length and the image height of the optical lens are reasonably controlled, which is conducive to the optical system meeting high resolution while taking into account long focal length.

[0121] In the example embodiment, the effective focal length F1 of the first lens and the total effective focal length F of the optical lens can satisfy: 3≤F1 / F≤10. Preferably, 3.5≤F1 / F≤8.5. Further, 3.855≤F1 / F≤6.857. By controlling the relationship, the effective focal length of the first lens and the total effective focal length of the optical lens are controlled within a reasonable range, which is conducive to collecting large field of view light into the rear optical system while achieving long focus. In addition, the effective focal length of the first lens is not too large, which is conducive to light convergence, achieving a large field of view angle and a small aperture. The effective focal length of the first lens is not too small, which is conducive to the regulation of the rear light, achieving high resolution and large image.

[0122] In the example embodiment, the effective focal length F2 of the second lens and the total effective focal length F of the optical lens can satisfy: -1≤F2 / F≤-0.2. Preferably, -0.8≤F2 / F≤-0.5. Further, -0.741≤F2 / F≤-0.585. By controlling the relationship, the effective focal length of the second lens is controlled to be small, which is conducive to better diverging the light converging in front, increasing the light flux, so that the edge light can be effectively diverged to improve the edge illumination. At the same time, it is conducive to pulling apart the distance between the edge light to achieve small distortion.

[0123] It is worth noting that the present application matches the relationship -1≤F2 / F≤-0.2 with the relationship 3≤F1 / F≤10, so that the large field of view light can be better collected and diverged, which is more conducive to realizing a small aperture at the front end.

[0124] In the example embodiment, the effective focal length F3 of the third lens and the total effective focal length F of the optical lens can satisfy: 0.2≤F3 / F≤2. Preferably, 0.5≤F3 / F≤1.5. More preferably, 0.6≤F3 / F≤1.25. Further, 0.759≤F3 / F≤1.16. By controlling the relationship, the effective focal length of the third lens is controlled to be small, which can effectively converge the light diverging in front, reduce the rear aperture, and shorten the TTL. In addition, the third lens of the present application is the key light turning point of the architecture, and reasonable control of the range of the relationship F3 / F is conducive to improving the imaging quality on the basis of ensuring miniaturization.

[0125] In the example embodiment, the effective focal length F4 of the fourth lens and the total effective focal length F of the optical lens can satisfy: 0.2≤|F4 / F|≤2.5. Preferably, 0.3≤|F4 / F|≤2.2. Further, 0.506≤|F4 / F|≤1.686. By controlling the relationship, the effective focal length of the fourth lens is controlled, which can better regulate the light trend, so that the light can better enter the rear optical system and improve the imaging quality.

[0126] In exemplary embodiments, the effective focal length F5 of the fifth lens and the total effective focal length F of the optical lens can satisfy: 0.1≤|F5 / F|≤5. Preferably, 0.2≤|F5 / F|≤4.5. Further, 0.349≤|F5 / F|≤3.295. By controlling the relationship, the effective focal length of the fifth lens is controlled, which is conducive to better regulation of the light path, so that the light can better enter the rear optical system, and the imaging quality is improved.

[0127] In exemplary embodiments, the effective focal length F6 of the sixth lens and the total effective focal length F of the optical lens can satisfy: 0.2≤|F6 / F|≤25. Preferably, 0.5≤|F6 / F|≤20. More preferably, 0.7≤|F6 / F|≤18. Further, 0.939≤|F6 / F|≤11.862. By controlling the relationship, the effective focal length of the sixth lens is controlled, so that the light emitted by the fifth lens can approximately vertically reach the imaging plane after the sixth lens, which is conducive to realizing small CRA and improving imaging quality.

[0128] In exemplary embodiments, the combined focal length F45 of the fourth lens and the fifth lens and the total effective focal length F of the optical lens can satisfy: F45 / F>0; that is, the combined focal length F45 of the fourth lens and the fifth lens is positive. Preferably, 0.5≤F45 / F≤800. Further, 0.97≤F45 / F≤585.845. By controlling the relationship, the combined focal length of the fourth lens and the fifth lens is controlled to be positive, which can further converge the light converging in front, relieve the convergence pressure of the third lens, reduce the system sensitivity, and improve the resolution quality. In addition, by further controlling the combined focal length of the fourth lens and the fifth lens within a reasonable range, the light can be smoothly transitioned to the sixth lens, so that the light as a whole shows a gentle convergence trend, which improves the imaging quality while reducing the rear aperture.

[0129] In exemplary embodiments, the effective focal length Fpositive of the positive lens in the fourth lens and the fifth lens and the effective focal length Fnegative of the negative lens can satisfy: -3≤Fpositive / Fnegative<0. Preferably, -2≤Fpositive / Fnegative≤-0.1. Further, -1.452≤Fpositive / Fnegative≤-0.183. By controlling the relationship, the focal lengths of the positive and negative lenses in the cemented lens are reasonably matched, which is conducive to the smooth light path in the cemented lens, reduces light energy loss, better corrects chromatic aberration, and improves the resolution quality.

[0130] In the example embodiment, the effective focal length F1 of the first lens and the effective focal length F2 of the second lens can satisfy: -12≤F1 / F2≤-3. Preferably, -11≤F1 / F2≤-4. Further, -9.819≤F1 / F2≤-5.334. By controlling the relationship, the focal length of the first lens and the second lens is reasonably controlled, so that the focal length value of the second lens is smaller than that of the first lens, which is conducive to the better entry of large field of view light into the optical system, so as to realize large field of view angle on the basis of meeting small aperture, and realize long focus.

[0131] In the example embodiment, the effective focal length F1 of the first lens, the effective focal length F2 of the second lens and the total effective focal length F of the optical lens can satisfy: -2≤(1 / F1+1 / F2) / (1 / F)≤-0.5. Preferably, -1.65≤(1 / F1+1 / F2) / (1 / F)≤-1. Further, -1.498≤(1 / F1+1 / F2) / (1 / F)≤-1.11. By controlling the relationship, the refractive power of the first lens and the second lens is reasonably set, so that the front light rays as a whole show a divergent trend, which can increase the light flux, improve the relative luminance, increase the design freedom of the rear lens, and realize high resolution.

[0132] In the example embodiment, the curvature radius R11 of the first side surface of the first lens and the light passing aperture D11 on the first side surface of the first lens corresponding to the maximum field of view angle of the optical lens can satisfy: 0.5≤R11 / D11≤2. Preferably, 0.85≤R11 / D11≤1.6. Further, 0.973≤R11 / D11≤1.418. By controlling the relationship, the ratio range between the curvature radius of the first side surface of the first lens and the light passing aperture is reasonably controlled, which can realize small aperture and large field of view at the same time.

[0133] In the example embodiment, the curvature radius R11 of the first side surface of the first lens and the effective focal length F1 of the first lens can satisfy: 0.05≤R11 / F1≤0.45. Preferably, 0.1≤R11 / F1≤0.4. Further, 0.166≤R11 / F1≤0.34. By controlling the relationship, the ratio range between the curvature radius of the first side surface of the first lens and the effective focal length of the first lens is reasonably controlled, which is conducive to the better collection of large field of view light, so as to realize large field of view angle while meeting long focus; at the same time, the pupil image of ghost image can be far away from the focal plane, so that the ghost image light on the final image plane is relatively divergent, effectively reducing the relative energy value of the ghost image, and improving the quality of the lens imaging picture.

[0134] In the exemplary embodiments, the radius of curvature R12 of the second side of the first lens and the effective focal length F1 of the first lens can satisfy: 0.05≤R12 / F1≤0.7. Preferably, 0.08≤R12 / F1≤0.6. Further, 0.188≤R12 / F1≤0.501. By controlling the relationship, the ratio range between the radius of curvature of the second side of the first lens arranged as a concave surface and the effective focal length of the first lens is reasonably controlled, so that the light rays can smoothly enter the second lens after passing through the first lens, which is beneficial to reduce the system sensitivity and improve the resolution quality.

[0135] In the exemplary embodiments, the radius of curvature R12 of the second side of the first lens and the radius of curvature R11 of the first side of the first lens can satisfy: 0.5≤R12 / R11≤2.5. Preferably, 1

[0136] In the exemplary embodiments, the radius of curvature R21 of the first side of the second lens and the radius of curvature R22 of the second side of the second lens can satisfy: -2.5≤R21 / R22≤-0.3. Preferably, -2≤R21 / R22≤-0.5. Further, -1.824≤R21 / R22≤-0.795. By controlling the relationship, the ratio range of the radii of curvature of the two sides of the second lens is reasonably controlled, which can appropriately diverge the light rays, so that the subsequent optical system has a larger light receiving surface, which is beneficial to balance the aberration and improve the resolution quality.

[0137] In the exemplary embodiments, the radius of curvature R31 of the first side of the third lens and the radius of curvature R32 of the second side of the third lens can satisfy: -2≤R31 / R32≤-0.3. Preferably, -1.4≤R31 / R32≤-0.45. Further, -1.2≤R31 / R32≤-0.626. By controlling the relationship, not only the third lens has a positive focal length as a key turning point of the light rays of the architecture, but also the radii of curvature of the two sides of the third lens are reasonably arranged, so that the light rays can be reasonably transitioned, which is beneficial to reduce the system sensitivity and improve the resolution quality.

[0138] In exemplary embodiments, the radius of curvature R31 of the first side surface of the third lens and the total effective focal length F of the optical lens can satisfy: 0.5≤R31 / F≤2.5. Preferably, 0.8≤R31 / F≤1.9. Further, 1.099≤R31 / F≤1.717. By controlling the relationship, the first side surface of the third lens is controlled to be convex with a small radius of curvature, which is conducive to better convergence of light, reduces the rear aperture, and shortens the TTL; meanwhile, it is also conducive to reducing light loss and improving imaging quality.

[0139] In exemplary embodiments, the radius of curvature R41 of the first side surface of the fourth lens and the total effective focal length F of the optical lens can satisfy: 0.5≤R41 / F≤2. Preferably, 0.7≤R41 / F≤1.7. Further, 0.83≤R41 / F≤1.483. By controlling the relationship, the first side surface of the fourth lens is controlled to be convex with a small radius of curvature, which further converges the light converging through the third lens, is conducive to sharing the convergence pressure of the third lens, reduces the system sensitivity, and improves the resolution quality.

[0140] In exemplary embodiments, the radius of curvature R12 of the second side surface of the first lens and the axial distance d12 from the second side surface of the first lens to the first side surface of the second lens can satisfy: 2≤R12 / d12≤18. Preferably, 2.5≤R12 / d12≤16. Further, 3.895≤R12 / d12≤12.512. By controlling the relationship, the collected large field of view light can better enter the second lens, reduce light loss, improve imaging quality, and achieve a large field of view angle and a small front end aperture.

[0141] In exemplary embodiments, the central thickness d3 of the third lens on the optical axis and the total optical length TTL of the optical lens can satisfy: 0.1≤d3 / TTL≤0.25. Preferably, 0.15≤d3 / TTL≤0.2. More preferably, 0.153≤d3 / TTL≤0.195. Further, 0.161≤d3 / TTL≤0.186. By controlling the relationship, the central thickness of the third lens is reasonably controlled, and the third lens is matched with positive focal power, which can effectively converge light, is conducive to ensuring high resolution while reducing the rear aperture and shortening the TTL, and achieving miniaturization.

[0142] In the example embodiment, the central thickness d3 of the third lens on the optical axis can satisfy 0.3≤d3 / F3≤0.9, where F3 is the total effective focal length of the optical lens. Preferably, 0.4≤d3 / F3≤0.8. Further, 0.451≤d3 / F3≤0.699. The third lens of the present application is a positive lens, which can converge light rays and is a key light ray turning point of the architecture, and the light ray deflection is large. At the same time, appropriately increasing the central thickness of the third lens and reasonably controlling the relationship between the effective focal length of the third lens are beneficial to increase the optical path, effectively converge the light rays incident from the front which have a diverging trend, smooth the light ray trend, reduce the system sensitivity, and improve the resolution quality.

[0143] In the example embodiment, the central thickness d1 of the first lens on the optical axis, the axial distance d12 from the second side of the first lens to the first side of the second lens, the central thickness d2 of the second lens on the optical axis, the axial distance d23 from the second side of the second lens to the first side of the third lens, and the central distance TL of the first side of the first lens to the second side of the sixth lens on the optical axis in the optical lens can satisfy 0.2≤(d1+d12+d2+d23) / TL≤0.5. Preferably, 0.22≤(d1+d12+d2+d23) / TL≤0.4. Further, 0.252≤(d1+d12+d2+d23) / TL≤0.366. By controlling the relationship, the central thickness and air gap of the first lens and the second lens, and the air gap of the second lens and the third lens are reasonably controlled, so that the front end structure of the optical lens is compact, and enough space is left for the rear end lens, which is beneficial to realize high resolution on the basis of miniaturization.

[0144] In the example embodiment, the central thickness d4 of the fourth lens on the optical axis, the central thickness d5 of the fifth lens on the optical axis, and the central distance TL of the first side of the first lens to the second side of the sixth lens on the optical axis in the optical lens can satisfy 0.1≤(d4+d5) / TL≤0.6. Preferably, 0.2≤(d4+d5) / TL≤0.5. Further, 0.226≤(d4+d5) / TL≤0.41. By controlling the relationship, the central thickness of the lens in the cemented lens can be appropriately increased within a certain range, which is beneficial to enhance the light ray control ability and improve the imaging quality.

[0145] In the example embodiment, the light passing aperture D62 on the second side surface of the sixth lens corresponding to the maximum field angle of the optical lens and the image height H corresponding to the maximum field angle of the optical lens can satisfy: 0.7≤D62 / H≤1.3. Preferably, 0.85≤D62 / H≤1.1. More preferably, 0.88≤D62 / H≤1.06. Further, 0.915≤D62 / H≤1.029. By controlling the relationship, the light passing aperture of the second side surface of the sixth lens is close to the image height, which ensures that the deflection angle of the light reaching the imaging surface is small, and is conducive to realizing small CRA.

[0146] It is worth noting that the present application can reasonably set the focal length and the two side curvature radii of the first lens through the cooperation of the relationship 3≤F1 / F≤10, the relationship 0.05≤R11 / F1≤0.45, the relationship 0.05≤R12 / F1≤0.7 and the relationship 5° / mm≤FOV / H≤7.5° / mm, which is conducive to better collecting large field of view light, so as to realize small aperture at the front end while meeting long focus; at the same time, the light can enter the second lens smoothly, which is conducive to the regulation of the rear light, and further realizes high resolution.

[0147] In addition, the present application can also cooperate through the relationship -2≤R31 / R32≤-0.3, the relationship 0.5≤R31 / F≤2.5 and the relationship 0.2≤F3 / F≤2, so that the focal length of the third lens is positive and small in value, which can quickly converge light, and by reasonably setting the two side curvature radii of the third lens, the light can be reasonably transitioned, which is conducive to reducing the sensitivity of the system and realizing high resolution and miniaturization.

[0148] In addition, the present application can also cooperate through the relationship 0.3≤d3 / F3≤0.9 and the relationship 0.1≤d3 / TTL≤0.25, so that the focal length of the third lens is positive and small in value, which can quickly converge light, and by reasonably setting the central thickness of the third lens, it is conducive to increasing the optical path, smoothing the light trend, reducing the sensitivity of the system, and realizing high resolution; at the same time, it can effectively converge the front light, reduce the rear aperture, reduce the TTL, and realize miniaturization.

[0149] The optical lens according to the above-mentioned embodiments of the present application can adopt multiple lenses, for example, the six lenses described above. By reasonably allocating the optical parameters of each lens, one or more advantages of small aperture, miniaturization, high resolution, low sensitivity, large angular resolution, large field of view, long back focal length, small distortion, small chief ray angle, high illumination, and processability of the optical lens are achieved, and can well match various application end chips, for example, vehicle-mounted chips, and can better suppress the dark corner phenomenon. The optical lens has good temperature performance, and the imaging effect changes little at high and low temperatures, and the image quality is stable. Therefore, the optical lens according to the above-mentioned embodiments of the present application can better meet the requirements of, for example, vehicle-mounted applications.

[0150] It should be understood by those skilled in the art that the total optical length TTL of the optical lens used in the above is the axial distance from the first side of the first lens to the imaging surface or image source surface; the optical back focal length BFL of the optical lens is the axial distance from the second side of the sixth lens to the imaging surface or image source surface; the maximum field of view FOV of the optical lens is related to the image height H, which refers to the corresponding field of view using the image height H; the center thickness of each lens refers to the axial distance from the first side of the current lens to the second side of the current lens; the air gap refers to the axial distance between two adjacent lenses, such as the air gap between the first lens and the second lens, which refers to the axial distance between the second side of the first lens and the first side of the second lens.

[0151] In addition, the present application focuses on protecting the lens architecture, and the lens surface profile is not limited to spherical or aspherical; if the focus is on the resolution quality, the lenses can all use aspherical lenses. The lens material is also not limited to plastic and glass; if the focus is on the temperature performance, the lenses can all use glass lenses.

[0152] However, it should be understood by those skilled in the art that the number of lenses constituting the optical lens can be changed without departing from the technical solutions claimed by the present application to obtain the various results and advantages described in the present specification. For example, although six lenses are described in the embodiments, the optical lens is not limited to including six lenses. If necessary, the optical lens can also include other numbers of lenses.

[0153] The specific embodiments of the optical lens applicable to the above-mentioned embodiments are further described below with reference to the accompanying drawings. It should be understood that the units of the curvature radius and the thickness / distance in the basic parameters of the optical lens are mm.

[0154] Embodiment 1

[0155] The following refers to Figure 1 The optical lens according to Embodiment 1 of the present application is described.

[0156] As Figure 1As shown, the optical lens, along the optical axis from the first side to the second side, includes: a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6. An aperture stop STO can be positioned between the second lens L2 and the third lens L3. The fourth lens L4 and the fifth lens L5 are cemented together to form a cemented lens.

[0157] The first lens L1 has positive optical power, its first side surface S1 is convex, and its second side surface S2 is concave.

[0158] The second lens L2 has negative optical power, and its first side surface S3 is concave, and its second side surface S4 is concave.

[0159] The third lens L3 has positive optical power, and its first side surface S6 is convex, and its second side surface S7 is convex.

[0160] The fourth lens L4 has negative optical power, and its first side surface S8 is convex and its second side surface is concave.

[0161] The fifth lens L5 has positive optical power, and its first side surface S9 is convex, and its second side surface S10 is convex.

[0162] The sixth lens L6 has negative optical power, with its first side surface S11 being concave and its second side surface S12 being convex.

[0163] An image plane IMA is disposed on the second side of the optical lens. A filter IR is disposed between the sixth lens L6 and the image plane IMA. The filter IR has a first side surface S13 and a second side surface S14. A protective glass CG is disposed between the filter IR and the image plane IMA. The protective glass CG has a first side surface S15 and a second side surface S16. When the IMA is the imaging plane, light from the object passes through each surface sequentially and is finally imaged on the IMA. When the IMA is the image source plane, light from the IMA passes through each surface sequentially and is finally projected onto the object.

[0164] Table 1 shows the basic parameters of the optical lens of Embodiment 1. It should be understood that the second side surface of the fourth lens L4 has exactly the same surface profile parameters as the first side surface S9 of the fifth lens L5.

[0165] Table 1

[0166]

[0167] from Figure 2 As can be seen, the MTF peak value of the optical lens in Example 1 at the center field of view at a spatial frequency of 119 lp / mm (119 line pairs / mm) can reach 0.6. Therefore, the optical lens given in Example 1 has good imaging quality and can achieve a high resolution of eight megapixels.

[0168] Example 2

[0169] The optical lens according to Embodiment 2 of the present application is described below with reference to Figure 3 As shown in Table 2, the main difference between Embodiment 2 and Embodiment 1 is that the radius of curvature, the thickness of each lens surface and other optical parameters are different. Figure 3

[0170] Table 2 shows the basic parameter table of the optical lens of Embodiment 2.

[0171] Table 2

[0172]

[0173] From the point of view of the MTF peak value of the central field of view of the optical lens of Embodiment 2 at a spatial frequency of 119 lp / mm (119 lines per millimeter), it can reach 0.63. Therefore, the optical lens given in Embodiment 2 has good imaging quality and can achieve a high resolution of 8 million pixels. Figure 4 Embodiment 3

[0174] The optical lens according to Embodiment 3 of the present application is described below with reference to

[0175] As shown in Table 3, the main difference between Embodiment 3 and Embodiment 1 is that the radius of curvature, the thickness of each lens surface and other optical parameters are different; and the fourth lens L4 has positive focal power, and its second side is convex; the fifth lens L5 has negative focal power, and its first side S9 is concave and its second side S10 is concave; the sixth lens L6 has positive focal power, and its first side S11 is convex. Figure 5 Figure 5 Table 3 shows the basic parameter table of the optical lens of Embodiment 3.

[0176] Table 3

[0177] Table 3

[0178]

[0179] From the point of view of the MTF peak value of the central field of view of the optical lens of Embodiment 3 at a spatial frequency of 119 lp / mm (119 lines per millimeter), it can reach 0.55. Therefore, the optical lens given in Embodiment 3 has good imaging quality and can achieve a high resolution of 8 million pixels. Figure 6 Embodiment 4

[0180] The optical lens according to Embodiment 4 of the present application is described below with reference to

[0181] As shown in Table 4, the main difference between Embodiment 4 and Embodiment 1 is that the radius of curvature, the thickness of each lens surface and other optical parameters are different; and the fourth lens L4 has positive focal power, and its second side is convex; the fifth lens L5 has negative focal power, and its first side S9 is concave and its second side S10 is concave; the sixth lens L6 has positive focal power, and its first side S11 is convex. Figure 7 Figure 7 ​​​As shown, the main differences between this embodiment and Embodiment 1 are: the optical parameters such as the radius of curvature and lens thickness of each lens surface are different; the fourth lens L4 has positive optical power and its second side is convex; the fifth lens L5 has negative optical power and its first side S9 is concave and its second side S10 is concave; the sixth lens L6 has positive optical power and its first side S11 is convex.

[0182] Table 4 shows the basic parameters of the optical lens of Example 4.

[0183] Table 4

[0184]

[0185] from Figure 8 As can be seen, the MTF peak value of the optical lens in Example 4 at the center field of view at a spatial frequency of 119 lp / mm (119 line pairs / mm) can reach 0.55. Therefore, the optical lens given in Example 4 has good imaging quality and can achieve a high resolution of eight megapixels.

[0186] Example 5

[0187] The following is for reference Figure 9 Describes an optical lens according to Embodiment 5 of this application. For example... Figure 9 As shown, the main differences between this embodiment and Embodiment 1 are: the optical parameters such as the radius of curvature and lens thickness of each lens surface are different; the fourth lens L4 has positive optical power and its second side is convex; the fifth lens L5 has negative optical power and its first side S9 is concave and its second side S10 is concave; the sixth lens L6 has positive optical power and its first side S11 is convex and its second side S12 is concave.

[0188] Table 5 shows the basic parameters of the optical lens of Example 5.

[0189] Table 5

[0190]

[0191] from Figure 10 As can be seen, the MTF peak value of the optical lens in Example 5 at the center field of view at a spatial frequency of 119 lp / mm (119 line pairs / mm) can reach 0.69. Therefore, the optical lens given in Example 5 has good imaging quality and can achieve a high resolution of eight megapixels.

[0192] Example 6

[0193] The following is for reference Figure 11 Describes an optical lens according to Embodiment 6 of this application. For example... Figure 11As shown, the main differences between this embodiment and Embodiment 1 are: the optical parameters such as the radius of curvature and lens thickness of each lens surface are different; the fourth lens L4 has positive optical power and its second side is convex; the fifth lens L5 has negative optical power and its first side S9 is concave and its second side S10 is concave; the sixth lens L6 has positive optical power and its first side S11 is convex and its second side S12 is concave.

[0194] Table 6 shows the basic parameters of the optical lens of Example 6.

[0195] Table 6

[0196]

[0197] from Figure 12 As can be seen, the MTF peak value of the optical lens in Example 6 at the center field of view at a spatial frequency of 119 lp / mm (119 line pairs / mm) can reach 0.69. Therefore, the optical lens given in Example 6 has good imaging quality and can achieve a high resolution of eight megapixels.

[0198] Example 7

[0199] The following is for reference Figure 13 Describes an optical lens according to Embodiment 7 of this application. For example... Figure 13 As shown, the main differences between this embodiment and Embodiment 1 are: the optical parameters such as the radius of curvature and lens thickness of each lens surface are different; the fourth lens L4 has positive optical power and its second side is convex; the fifth lens L5 has negative optical power and its first side S9 is concave; the sixth lens L6 has a first side S11 that is convex and a second side S12 that is concave.

[0200] Table 7 shows the basic parameters of the optical lens of Example 7.

[0201] Table 7

[0202]

[0203] from Figure 14 As can be seen, the MTF peak value of the optical lens in Example 7 at the center field of view at a spatial frequency of 119 lp / mm (119 line pairs / mm) can reach 0.72. Therefore, the optical lens given in Example 7 has good imaging quality and can achieve a high resolution of eight megapixels.

[0204] Example 8

[0205] The following is for reference Figure 15 Describes an optical lens according to Embodiment 8 of this application. For example... Figure 15As shown, the main differences between this embodiment and Embodiment 1 are: the optical parameters such as the radius of curvature and lens thickness of each lens surface are different; the fourth lens L4 has positive optical power and its second side is convex; the fifth lens L5 has negative optical power and its first side S9 is concave; the sixth lens L6 has a first side S11 that is convex and a second side S12 that is concave.

[0206] Table 8 shows the basic parameters of the optical lens of Example 8.

[0207] Table 8

[0208]

[0209] from Figure 16 As can be seen, the MTF peak value of the optical lens in Example 8 at the center field of view at a spatial frequency of 119 lp / mm (119 line pairs / mm) can reach 0.73. Therefore, the optical lens given in Example 8 has good imaging quality and can achieve a high resolution of eight megapixels.

[0210] Example 9

[0211] The following is for reference Figure 17 Describes an optical lens according to Embodiment 9 of this application. For example... Figure 17 As shown, the main differences between this embodiment and Embodiment 1 are: the optical parameters such as the radius of curvature and lens thickness of each lens surface are different; the fourth lens L4 has positive optical power and its second side is convex; the fifth lens L5 has negative optical power and its first side S9 is concave; and the second side S12 of the sixth lens L6 is concave.

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

[0213] Table 9

[0214]

[0215] from Figure 18 As can be seen, the MTF peak value of the optical lens in Example 9 at the center field of view at a spatial frequency of 119 lp / mm (119 line pairs / mm) can reach 0.74. Therefore, the optical lens given in Example 9 has good imaging quality and can achieve a high resolution of eight megapixels.

[0216] Example 10

[0217] The following is for reference Figure 19 Describes an optical lens according to Embodiment 10 of this application. For example... Figure 19As shown, the main differences between this embodiment and Embodiment 1 are: the optical parameters such as the radius of curvature and lens thickness of each lens surface are different; the fourth lens L4 has positive optical power and its second side is convex; the fifth lens L5 has negative optical power and its first side S9 is concave; and the second side S12 of the sixth lens L6 is concave.

[0218] Table 10 shows the basic parameters of the optical lens of Embodiment 10.

[0219] Table 10

[0220]

[0221] from Figure 20 As can be seen, the MTF peak value of the optical lens of Example 10 at the center field of view at a spatial frequency of 119 lp / mm (119 line pairs / mm) can reach 0.75. Therefore, the optical lens given in Example 10 has good imaging quality and can achieve a high resolution of eight megapixels.

[0222] Example 11

[0223] The following is for reference Figure 21 Describes an optical lens according to Embodiment 11 of this application. For example... Figure 21 As shown, the main differences between this embodiment and Embodiment 1 are: the optical parameters such as the radius of curvature and lens thickness of each lens surface are different; the fourth lens L4 has positive optical power and its second side is convex; the fifth lens L5 has negative optical power and its first side S9 is concave and its second side S10 is concave; and the sixth lens L6 has positive optical power.

[0224] Table 11 shows the basic parameters of the optical lens of Embodiment 11.

[0225] Table 11

[0226]

[0227] from Figure 22 As can be seen, the MTF peak value of the optical lens in Example 11 at the center field of view at a spatial frequency of 119 lp / mm (119 line pairs / mm) can reach 0.68. Therefore, the optical lens given in Example 11 has good imaging quality and can achieve a high resolution of eight megapixels.

[0228] Example 12

[0229] The following is for reference Figure 23 Describes an optical lens according to Embodiment 12 of this application. For example... Figure 23As shown, the main differences between this embodiment and Embodiment 1 are: the optical parameters such as the radius of curvature and lens thickness of each lens surface are different; the fourth lens L4 has positive optical power and its second side is convex; the fifth lens L5 has negative optical power and its first side S9 is concave and its second side S10 is concave; and the sixth lens L6 has positive optical power.

[0230] Table 12 shows the basic parameters of the optical lens of Example 12.

[0231] Table 12

[0232]

[0233] from Figure 24 As can be seen, the MTF peak value of the optical lens in Example 12 at the center field of view at a spatial frequency of 119 lp / mm (119 line pairs / mm) can reach 0.7. Therefore, the optical lens given in Example 12 has good imaging quality and can achieve a high resolution of eight megapixels.

[0234] Example 13

[0235] The following is for reference Figure 25 Describes an optical lens according to Embodiment 13 of this application. For example... Figure 25 As shown, the main differences between this embodiment and Embodiment 1 are: the optical parameters such as the radius of curvature and lens thickness of each lens surface are different; the fourth lens L4 has positive optical power and its second side surface is convex; the fifth lens L5 has negative optical power and its first side surface S9 is concave.

[0236] Table 13 shows the basic parameters of the optical lens of Example 13.

[0237] Table 13

[0238]

[0239] from Figure 26 As can be seen, the MTF peak value of the optical lens in Example 13 at the center field of view at a spatial frequency of 119 lp / mm (119 line pairs / mm) can reach 0.72. Therefore, the optical lens given in Example 13 has good imaging quality and can achieve a high resolution of eight megapixels.

[0240] Example 14

[0241] The following is for reference Figure 27 Describes an optical lens according to Embodiment 14 of this application. For example... Figure 27As shown, the main differences between this embodiment and Embodiment 1 are: the optical parameters such as the radius of curvature and lens thickness of each lens surface are different; the fourth lens L4 has positive optical power and its second side surface is convex; the fifth lens L5 has negative optical power and its first side surface S9 is concave.

[0242] Table 14 shows the basic parameters of the optical lens of Example 14.

[0243] Table 14

[0244]

[0245] from Figure 28 As can be seen, the MTF peak value of the optical lens in Example 14 at the center field of view at a spatial frequency of 119 lp / mm (119 line pairs / mm) can reach 0.73. Therefore, the optical lens given in Example 14 has good imaging quality and can achieve a high resolution of eight megapixels.

[0246] Example 15

[0247] The following is for reference Figure 29 Describes an optical lens according to Embodiment 15 of this application. For example... Figure 29 As shown, the main differences between this embodiment and Embodiment 1 are: the optical parameters such as the radius of curvature and lens thickness of each lens surface are different; the fourth lens L4 has positive optical power and its second side surface is convex; the fifth lens L5 has negative optical power and its first side surface S9 is concave.

[0248] Table 15 shows the basic parameters of the optical lens of Example 15.

[0249] Table 15

[0250]

[0251] from Figure 30 As can be seen, the MTF peak value of the optical lens in Example 15 at the center field of view at a spatial frequency of 119 lp / mm (119 line pairs / mm) can reach 0.72. Therefore, the optical lens given in Example 15 has good imaging quality and can achieve a high resolution of eight megapixels.

[0252] Table 16-1 and Table 16-2 give the basic parameters of the optical lens in Example 1 to Example 15, such as FNO, TL, F, H, FOV, D11, theta, BFL, F1, F2, F3, F4, F5, F6, F45, Fpos, Fneg, R11, R12, R21, R22, R31, R32, R41, d12, d3, d1, d2, d23, TL, d4, d5 and D62. The unit of parameter FOV in the table is °, the unit of parameter theta is the radian value corresponding to parameter FOV, and the units of other parameters are mm.

[0253] Table 16-1

[0254]

[0255] Table 16-2

[0256]

[0257] In summary, the relationship of each of Example 1 to Example 15 satisfies the relationship shown in Table 17-1 and Table 17-2.

[0258] Table 17-1

[0259]

[0260] Table 17-2

[0261]

[0262] The present application also provides an electronic device comprising the optical lens in the above example embodiments and at least one of an imaging element and a light source; wherein the imaging element is used to convert the optical image or optical information formed by the optical lens into an electrical signal; and wherein the light source is located on the second side of the optical lens, the light emitted by the light source is projected to the first side of the optical lens after passing through the optical lens, and an image or an illumination area is formed on the first side of the optical lens.

[0263] It is worth noting that the electronic device can be implemented as a laser radar, a camera or a projection lamp, but is not limited thereto. Accordingly, the optical lens can be used as a light emitting lens or a light receiving lens. For example, in the case that the electronic device is a camera, the electronic device can comprise the optical lens in the above example embodiments and a photosensor for converting the optical image formed by the optical lens into an electrical signal, the photosensor being arranged on the second side of the optical lens, for example, on the imaging surface, and can be implemented as a charge-coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS). The light from the first side is imaged on the second side after passing through the optical lens.

[0264] In the case that the electronic device is a projection lamp, the electronic device can include the optical lens and the light source in the above example embodiments, and the light source is located at the second side of the optical lens. The light emitted by the light source is projected to the first side of the optical lens after passing through the optical lens, and forms an image or illuminates an area at the first side.

[0265] In addition, in the case that the electronic device is a laser radar, the receiving end lens of the laser radar can be implemented as the optical lens described above, and the first side of the optical lens is the object side, and the second side of the optical lens is the image side.

[0266] It is worth noting that the electronic device implemented as a laser radar can include a first device and a second device, the first device can be implemented as a laser radar transmitting device, and the second device can be implemented as a laser radar receiving device. The first device can include the optical lens and the light source in the above example embodiments, and the light source is located at the second side of the optical lens. The light emitted by the light source is projected to the first side of the optical lens after passing through the optical lens, and forms an image or illuminates an area at the first side. The second device can include the optical lens and the photoelectric sensor for converting the optical image formed by the optical lens into an electrical signal in the above example embodiments, and the photoelectric sensor is arranged at the second side of the optical lens (for example, arranged on the imaging surface). The photoelectric sensor can be implemented as a charge-coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS), and the light from the first side is imaged at the second side after passing through the optical lens.

[0267] It is worth mentioning that the present application also provides a vehicle, which can include the electronic device described above for obtaining information.

[0268] The above description is only the preferred embodiments of the present application and the explanation of the applied technical principles. Those skilled in the art should understand that the scope of the present application is not limited to the technical solutions formed by the specific combinations of the above technical features, and also covers other technical solutions formed by any combinations of the above technical features or their equivalent features without departing from the concept of the present application. For example, the above features can be replaced with the technical features disclosed in the present application (but not limited to) having similar functions to form technical solutions.

Claims

1. An optical lens characterized in that, sequentially include, along the optical axis from the first side to the second side: a first lens with positive refractive power, a first side of the first lens being convex, a second side of the first lens being concave; a second lens with negative refractive power, a first side of the second lens being concave, a second side of the second lens being concave; a third lens with positive refractive power, a first side of the third lens being convex, a second side of the third lens being convex; a fourth lens with refractive power; a fifth lens with refractive power, a sign of the refractive power of the fifth lens being opposite to that of the fourth lens; and a sixth lens with refractive power; wherein a number of lenses with refractive power in the optical lens is six; the optical lens satisfies: 3≤F1 / F≤10; wherein F1 is an effective focal length of the first lens, and F is a total effective focal length of the optical lens.

2. The optical lens according to claim 1, wherein: the fourth lens has positive refractive power, a first side of the fourth lens being convex, a second side of the fourth lens being convex, or the fourth lens has negative refractive power, a first side of the fourth lens being convex, a second side of the fourth lens being concave; and / or, the fifth lens has negative refractive power, a first side of the fifth lens being concave, a second side of the fifth lens being concave or convex, or the fifth lens has positive refractive power, a first side of the fifth lens being convex, a second side of the fifth lens being convex; and / or, the sixth lens has positive refractive power or negative refractive power, or a first side of the sixth lens is concave, a second side of the sixth lens is concave or convex, or a first side of the sixth lens is convex, a second side of the sixth lens is convex or concave; and / or, the fourth lens and the fifth lens are cemented to each other; and / or, the optical lens further comprises a diaphragm between the second lens and the third lens; and / or, all lenses in the optical lens are spherical glass lenses.

3. The optical lens of claim 1 or claim 2, wherein, the optical lens satisfies: 2≤TTL / F≤4.5; wherein TTL is an optical total length of the optical lens, and F is a total effective focal length of the optical lens.

4. The optical lens of claim 1 or claim 2, wherein, the optical lens satisfies: 0.03≤|(H-F×θ) / (F×θ)|≤0.1; wherein H is an image height corresponding to a maximum field angle of the optical lens, θ is an arc value of the maximum field angle of the optical lens, and F is a total effective focal length of the optical lens.

5. The optical lens of claim 1 or claim 2, wherein, the optical lens satisfies: 5° / mm≤FOV / H≤7.5° / mm; wherein FOV is a maximum field angle of the optical lens, and H is an image height corresponding to the maximum field angle of the optical lens.

6. The optical lens of claim 1 or claim 2, wherein, the optical lens satisfies: -1≤F2 / F≤-0.2; wherein F2 is an effective focal length of the second lens, and F is a total effective focal length of the optical lens.

7. The optical lens of claim 1 or claim 2, wherein, the optical lens satisfies: 0.2≤F3 / F≤2; wherein F3 is an effective focal length of the third lens, and F is a total effective focal length of the optical lens.

8. The optical lens of claim 1 or claim 2, wherein, The combined focal length of the fourth lens and the fifth lens is a positive value.

9. The optical lens of claim 1 or claim 2, wherein, The optical lens satisfies: -2≤(1 / F1+1 / F2) / (1 / F)≤-0.5; Wherein, F1 is the effective focal length of the first lens, F2 is the effective focal length of the second lens, and F is the total effective focal length of the optical lens.

10. The optical lens of claim 1 or claim 2, wherein, The optical lens satisfies the following condition: 0.05 ≤ R11 / F1 ≤ 0.45; Wherein, R11 is the radius of curvature of the first side surface of the first lens, and F1 is the effective focal length of the first lens.

11. The optical lens of claim 1 or claim 2, wherein, The optical lens satisfies the following condition: 0.5 ≤ R31 / F ≤ 2.5; Wherein, R31 is the radius of curvature of the first side surface of the third lens, and F is the total effective focal length of the optical lens.

12. The optical lens of claim 1 or claim 2, wherein, The optical lens satisfies the following condition: 0.1 ≤ d³ / TTL ≤ 0.25; Wherein, d3 is the center thickness of the third lens on the optical axis, and TTL is the total optical length of the optical lens.

13. The optical lens of claim 1 or claim 2, wherein, The optical lens satisfies: 0.3 ≤ d3 / F3 ≤ 0.9; Wherein, d3 is the center thickness of the third lens on the optical axis, and F3 is the effective focal length of the third lens.

14. The optical lens of claim 1 or claim 2, wherein, The optical lens satisfies at least one of the following relationships: 3≤D11 / H / FOV×180°≤7, 0.03≤BFL / TTL≤0.35, 55°≤FOV×F / H≤70°, 13≤TTL / H / FOV×180°≤17, 0.8≤F / H≤1.8, 0.2≤|F4 / F|≤2.5, 0.1≤|F5 / F|≤5, 0.2≤|F6 / F|≤25, -3≤Fpositive / Fnegative <0, -12≤F1 / F2 ≤-3, 0.5≤R11 / D11≤2, 0.5≤R12 / R11≤2.5, -2.5≤R21 / R22≤-0.3, 0.2≤(d1+d12+d2+d23) / TL≤0.5, 0.05≤R12 / F1≤0.7, -2≤R31 / R32≤-0.3, 0.5≤R41 / F≤2, 2≤R12 / d12≤18, 0.7≤D62 / H≤1.3 and 0.1≤(d4+d5) / TL≤0.6; Wherein, D11 is the clear aperture on the first side of the first lens corresponding to the maximum field angle of the optical lens, H is the image height corresponding to the maximum field angle of the optical lens, FOV is the maximum field angle of the optical lens, BFL is the optical back focus of the optical lens, TTL is the total optical length of the optical lens, F is the total effective focal length of the optical lens, F4 is the effective focal length of the fourth lens, F5 is the effective focal length of the fifth lens, F6 is the effective focal length of the sixth lens, Fpositive is the effective focal length of the positive lens among the fourth lens and the fifth lens, Fnegative is the effective focal length of the negative lens among the fourth lens and the fifth lens, F1 is the effective focal length of the first lens, F2 is the effective focal length of the second lens, R11 is the curvature radius of the first side of the first lens, R12 is the curvature radius of the second side of the first lens, R21 is the curvature radius of the first side of the second lens, R22 is the curvature radius of the second side of the second lens, d1 is the central thickness of the first lens on the optical axis, d12 is the on-axis distance from the second side of the first lens to the first side of the second lens, d2 is the central thickness of the second lens on the optical axis, d23 is the on-axis distance from the second side of the second lens to the first side of the third lens, TL is the central distance on the optical axis from the first side of the first lens to the second side of the sixth lens in the optical lens, R31 is the curvature radius of the first side of the third lens, R32 is the curvature radius of the second side of the third lens, R41 is the curvature radius of the first side of the fourth lens, D62 is the clear aperture on the second side of the sixth lens corresponding to the maximum field angle of the optical lens, d4 is the central thickness of the fourth lens on the optical axis, d5 is the central thickness of the fifth lens on the optical axis.

15. The optical lens of claim 1 or claim 2, wherein, The optical lens satisfies at least one of the following relationships: 2.8≤TTL / F≤3.4, 4≤D11 / H / FOV×180°≤6, 0.035≤|(HF×θ) / (F×θ)|≤0.09, 0.05≤BFL / TTL≤0.3, 58°≤FOV×F / H≤65°, 6° / mm≤FOV / H≤7° / mm, 14≤TTL / H / FOV×180°≤16.7, 1.2≤F / H≤1.4, 3.5≤F1 / F≤8.5, -0.8≤F2 / F≤-0.5, 0.5≤F3 / F≤1.5, 0.3≤|F4 / F|≤2.2, 0.2≤|F5 / F|≤4.5, 0.5≤|F6 / F|≤20, 0.5≤F45 / F≤800, -2≤Fpositive / Fnegative≤-0 .1, -11≤F1 / F2≤-4, -1.65≤(1 / F1+1 / F2) / (1 / F)≤-1, 0.85≤R11 / D11≤1.6, 0.1≤R11 / F1≤0.4, 0.08≤R12 / F1≤0.6, 1<R12 / R11≤1.6, -2≤R21 / R22≤-0.5, -1.4≤R31 / R32≤-0.

45. 0.8≤R31 / F≤1.9, 0.7≤R41 / F≤1.7, 2.5≤R12 / d12≤16, 0.15≤d3 / TTL≤0.2, 0.4≤d3 / F3≤0.8, 0.22≤(d1+d12+d2+d23) / TL≤0.4, 0.2≤(d4+d5) / TL≤0.5, and 0.85≤D62 / H≤1.1; Wherein, TTL is the total optical length of the optical lens, F is the total effective focal length of the optical lens, D11 is the clear aperture on the first side of the first lens corresponding to the maximum field angle of the optical lens, H is the image height corresponding to the maximum field angle of the optical lens, FOV is the maximum field angle of the optical lens, θ is the radian value of the maximum field angle of the optical lens, BFL is the optical back focal length of the optical lens, F1 is the effective focal length of the first lens, F2 is the effective focal length of the second lens, F3 is the effective focal length of the third lens, F4 is the effective focal length of the fourth lens, F5 is the effective focal length of the fifth lens, F6 is the effective focal length of the sixth lens, F45 is the combined focal length of the fourth lens and the fifth lens, Fpositive is the effective focal length of the positive lens in the fourth lens and the fifth lens, Fnegative is the effective focal length of the negative lens in the fourth lens and the fifth lens, R11 is the curvature radius of the first side of the first lens, R12 is the curvature radius of the second side of the first lens, R21 is the curvature radius of the first side of the second lens, R22 is the curvature radius of the second side of the second lens, R31 is the curvature radius of the first side of the third lens, R32 is the curvature radius of the second side of the third lens, R41 is the curvature radius of the first side of the fourth lens, d12 is the axial distance from the second side of the first lens to the first side of the second lens, d3 is the central thickness of the third lens on the optical axis, d1 is the central thickness of the first lens on the optical axis, d2 is the central thickness of the second lens on the optical axis, d23 is the axial distance from the second side of the second lens to the first side of the third lens, TL is the central distance from the first side of the first lens to the second side of the sixth lens on the optical axis in the optical lens, d4 is the central thickness of the fourth lens on the optical axis, d5 is the central thickness of the fifth lens on the optical axis, D62 is the clear aperture on the second side of the sixth lens corresponding to the maximum field angle of the optical lens.

16. The optical lens of claim 1 or claim 2, wherein, The optical lens satisfies at least one of the following relationships: 0.6≤F3 / F≤1.25, 0.7≤|F6 / F|≤18, 0.153≤d3 / TTL≤0.195 and 0.88≤D62 / H≤1.06; Wherein, F3 is the effective focal length of the third lens, F is the total effective focal length of the optical lens, F6 is the effective focal length of the sixth lens, d3 is the central thickness of the third lens on the optical axis, TTL is the total optical length of the optical lens, D62 is the clear aperture on the second side of the sixth lens corresponding to the maximum field angle of the optical lens, H is the image height corresponding to the maximum field angle of the optical lens.

17. The optical lens of claim 1 or claim 2, wherein, The optical lens satisfies at least one of the following relationships: 2.912≤TTL / F≤3.259, 4.341≤D11 / H / FOV×180°≤5.607, 0.047≤|(HF×θ) / (F×θ)|≤0.08, 0.079≤BFL / TTL≤0.233, 60.091°≤FOV×F / H≤62.291°, 6.378° / mm≤FOV / H≤6.491° / mm, 14.48≤TTL / H / FOV×180°≤16.151, 1.273≤F / H≤1.32, 3.855≤F1 / F≤6.857, -0.741≤F2 / F≤-0.585, 0.759≤F3 / F≤1.16, 0 .506≤|F4 / F|≤1.686, 0.349≤|F5 / F|≤3.295, 0.939≤|F6 / F|≤11.862, 0.97≤F45 / F≤585.845, -1.452≤Fpositive / Fnegative ≤ -0.183, -9.819 ≤ F1 / F2 ≤ -5.334, -1.498 ≤ (1 / F1 + 1 / F2) / (1 / F) ≤ -1.11, 0.973 ≤ R11 / D11 ≤ 1.418, 0.166 ≤ R11 / F1 ≤ 0.34, 0.188 ≤ R12 / F1 ≤ 0.501, 1.13 < R12 / R11 ≤ 1.476, -1.824 ≤ R21 / R22 ≤ -0.795, -1.2 ≤ R31 / R32 ≤-0.626, 1.099≤R31 / F≤1.717, 0.83≤R41 / F≤1.483, 3.895≤R12 / d12≤12.512, 0.161≤d3 / TTL≤0.186, 0.451≤d3 / F3≤0.699, 0.252≤(d1+d12+d2+d23) / TL≤0.366, 0.226≤(d4+d5) / TL≤0.41 and 0.915≤D62 / H≤1.029; Wherein, TTL is the total optical length of the optical lens, F is the total effective focal length of the optical lens, D11 is the clear aperture on the first side of the first lens corresponding to the maximum field angle of the optical lens, H is the image height corresponding to the maximum field angle of the optical lens, FOV is the maximum field angle of the optical lens, θ is the radian value of the maximum field angle of the optical lens, BFL is the optical back focal length of the optical lens, F1 is the effective focal length of the first lens, F2 is the effective focal length of the second lens, F3 is the effective focal length of the third lens, F4 is the effective focal length of the fourth lens, F5 is the effective focal length of the fifth lens, F6 is the effective focal length of the sixth lens, F45 is the combined focal length of the fourth lens and the fifth lens, Fpositive is the effective focal length of the positive lens in the fourth lens and the fifth lens, Fnegative is the effective focal length of the negative lens in the fourth lens and the fifth lens, R11 is the curvature radius of the first side of the first lens, R12 is the curvature radius of the second side of the first lens, R21 is the curvature radius of the first side of the second lens, R22 is the curvature radius of the second side of the second lens, R31 is the curvature radius of the first side of the third lens, R32 is the curvature radius of the second side of the third lens, R41 is the curvature radius of the first side of the fourth lens, d12 is the axial distance from the second side of the first lens to the first side of the second lens, d3 is the central thickness of the third lens on the optical axis, d1 is the central thickness of the first lens on the optical axis, d2 is the central thickness of the second lens on the optical axis, d23 is the axial distance from the second side of the second lens to the first side of the third lens, TL is the central distance from the first side of the first lens to the second side of the sixth lens on the optical axis in the optical lens, d4 is the central thickness of the fourth lens on the optical axis, d5 is the central thickness of the fifth lens on the optical axis, D62 is the clear aperture on the second side of the sixth lens corresponding to the maximum field angle of the optical lens.

18. An electronic device, comprising: Comprise: The optical lens according to any one of claims 1-17; And At least one of an imaging element and a light source; Wherein, the imaging element is used to convert the optical image or optical information formed by the optical lens into an electrical signal; Wherein, the light source is located on the second side of the optical lens, the light emitted by the light source is projected to the first side of the optical lens after passing through the optical lens, and an image or an illuminated area is formed on the first side of the optical lens.

Images