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Optical lens and imaging equipment

An optical lens and lens technology, applied in optics, optical components, instruments, etc., can solve the problems of different magnifications and optical lenses are difficult to meet, and achieve the effect of small f-θ distortion

Active Publication Date: 2021-09-03
NINGBO SUNNY AUTOMOTIVE OPTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to meet the requirements of this special field of view, the lens needs to have different focal length values ​​in the x and y directions, that is, the magnification of the lens in the x direction and the y direction is different, but it is difficult for the commonly used even-order aspheric lens and spherical lens to meet the requirements. the request
[0004] In addition, in some specific application scenarios, the optical lens requires the lens to have the ability to control the resolution of different positions on the imaging surface (for example, the resolution capability of the half area on the imaging surface of a vehicle rearview lens is required to be higher than that of the lower half area). The demand is also difficult to meet for commonly used optical lenses

Method used

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  • Optical lens and imaging equipment
  • Optical lens and imaging equipment
  • Optical lens and imaging equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] Refer to the following figure 1 An optical lens according to Embodiment 1 of the present application is described. figure 1 A schematic structural diagram of the optical lens according to Embodiment 1 of the present application is shown.

[0072] Such as figure 1 As shown, the optical lens sequentially 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 along the optical axis from the object side to the imaging side.

[0073] The first lens L1 is a meniscus lens with negative refractive power, the object side S1 is convex, and the image side S2 is concave.

[0074] The second lens L2 is a meniscus lens with negative refractive power, the object side S3 is convex, and the image side S4 is concave.

[0075] The third lens L3 is a meniscus lens with negative refractive power, the object side S5 is concave, and the image side S6 is convex.

[0076]The fourth lens L4 is a biconvex lens with positive refra...

Embodiment 2

[0099] Refer to the following figure 2 An optical lens according to Embodiment 2 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, descriptions similar to those in Embodiment 1 will be omitted. figure 2 A schematic structural view of the optical lens according to Embodiment 2 of the present application is shown.

[0100] Such as figure 2 As shown, the optical lens sequentially 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 along the optical axis from the object side to the imaging side.

[0101] The first lens L1 is a biconcave lens with negative refractive power, and its object side S1 and image side S2 are both concave.

[0102] The second lens L2 is a meniscus lens with negative refractive power, the object side S3 is convex, and the image side S4 is concave.

[0103] The third lens L3 is a meniscus lens with positive refractive po...

Embodiment 3

[0122] Refer to the following image 3 An optical lens according to Embodiment 3 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, descriptions similar to those in Embodiment 1 will be omitted. image 3 A schematic structural diagram of an optical lens according to Embodiment 3 of the present application is shown.

[0123] Such as image 3 As shown, the optical lens sequentially 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 along the optical axis from the object side to the imaging side.

[0124] The first lens L1 is a meniscus lens with negative refractive power, the object side S1 is convex, and the image side S2 is concave.

[0125] The second lens L2 is a meniscus lens with negative refractive power, the object side S3 is convex, and the image side S4 is concave.

[0126] The third lens L3 is a meniscus lens with positive refractive...

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PUM

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Abstract

The application discloses an optical lens and an imaging device including the optical lens. The optical lens may sequentially include a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens along the optical axis from the object side to the image side. Wherein, the first lens can have negative refractive power; the second lens can have negative refractive power, and its object side is convex, and the image side is concave; the object side of the third lens can be concave, and the image side can be convex; The fifth lens may have negative power with its object side convex and its image side concave; and the sixth lens may have positive power with its object and image sides both convex. According to the optical lens of the present application, at least one of beneficial effects such as special field of view, small f-θ distortion, small front diameter, high resolution, ability to control resolution at different positions, and low cost can be realized.

Description

technical field [0001] The present application relates to an optical lens and an imaging device, and more particularly, the present application relates to an optical lens including six lenses and an imaging device including the optical lens. Background technique [0002] With the development of science and technology, more and more fields need to use lenses as "eyes", such as vehicle, monitoring, projection, industry, etc. With the growth of demand and the development of technology, people's demands for lens performance are becoming more and more diverse. For example, the rear-view and surround-view optical lenses in the automotive field have a large difference between the aspect ratio of the object plane (field of view ratio) and the aspect ratio of the image plane (that is, the aspect ratio of the chip, such as 16:9), so the chip size The utilization rate is low. [0003] Therefore, the optical lens needs to be in different directions (such as x, y direction, see figure...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0045
Inventor 金嘉俊王东方姚波
Owner NINGBO SUNNY AUTOMOTIVE OPTECH