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Optical lens and imaging device

An optical lens and optical technology, applied in optics, optical components, instruments, etc., can solve problems such as unfavorable system integration, increased lens size and manufacturing cost, increased system cost, etc., and achieves good imaging quality, large field of view, and universal The effect of a large light aperture

Active Publication Date: 2019-04-26
NINGBO SUNNY AUTOMOTIVE OPTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional way to improve lens resolution is to increase the number of lenses, but this will increase the size of the lens and the manufacturing cost
Especially for the limited installation space of the vehicle lens module, it is very unfavorable to achieve miniaturization and improve system integration
In addition, in some specific application environments (for example, active and safe driving), optical lenses for automotive applications require the lens to be able to detect objects in a long distance, which requires the lens to have a longer focal length, but this will also make the lens Limited field angle, small
The traditional method is to cooperate with a wide-angle lens with a large field of view to expand the overall observation field of view, and combine the software to complete the picture stitching; but this will increase the system cost and is not conducive to system integration

Method used

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  • Optical lens and imaging device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] The following reference figure 1 The optical lens according to Embodiment 1 of the present application is described. figure 1 A schematic structural diagram of an optical lens according to Embodiment 1 of the present application is shown.

[0065] Such as figure 1 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, and a fifth lens L5 in order from the object side to the imaging side along the optical axis.

[0066] The first lens L1 is a meniscus lens with negative refractive power, and its object side surface S1 is a convex surface, and the image side surface S2 is a concave surface.

[0067] The second lens L2 is a biconvex lens with positive refractive power, and the object side surface S3 and the image side surface S4 are both convex.

[0068] The third lens L3 is a biconcave lens with negative refractive power, and the object side surface S6 and the image side surface S7 are both concave. The fourth lens L4 is a biconv...

Embodiment 2

[0086] The following reference figure 2 The optical lens according to Embodiment 2 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. figure 2 A schematic structural diagram of an optical lens according to Embodiment 2 of the present application is shown.

[0087] Such as figure 2 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, and a fifth lens L5 in order from the object side to the imaging side along the optical axis.

[0088] The first lens L1 is a meniscus lens with negative refractive power, and its object side surface S1 is a convex surface, and the image side surface S2 is a concave surface.

[0089] The second lens L2 is a biconvex lens with positive refractive power, and the object side surface S3 and the image side surface S4 are both convex.

[0090] The third lens L3 is a plano-concave lens ...

Embodiment 3

[0104] The following reference image 3 The optical lens according to Embodiment 3 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. image 3 A schematic structural diagram of an optical lens according to Embodiment 3 of the present application is shown.

[0105] Such as image 3 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, and a fifth lens L5 in order from the object side to the imaging side along the optical axis.

[0106] The first lens L1 is a meniscus lens with negative refractive power, and its object side surface S1 is a convex surface, and the image side surface S2 is a concave surface.

[0107] The second lens L2 is a biconvex lens with positive refractive power, and the object side surface S3 and the image side surface S4 are both convex.

[0108] The third lens L3 is a meniscus lens with neg...

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Abstract

Provided are an optical lens and an imaging device including the optical lens. The optical lens sequentially includes a first lens, a second lens, a third lens, a fourth lens and a fifth lens from anobject side to an image side along the optical axis, wherein the first lens has negative refractive focal power, the object side surface of the first lens is a convex surface, and the image side surface of the first lens is a concave surface; the second lens has positive focal power, and the object side surface and the image side surface of the second lens are both convex surfaces; the third lenshas negative focal powder, and the image side surface of the third lens is a concave surface; the fourth lens has positive focal power, and both the object side surface and the image side surface of the fourth lens are convex surfaces; and the fifth lens has negative focal power, the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a concave surface. The optical lens can achieve at least one of the advantages such as good imaging quality, long-focus distant shooting, large angle of view, large aperture and miniaturization.

Description

Technical field [0001] The present application relates to an optical lens and an imaging device including the optical lens. More specifically, the present application relates to an optical lens and an imaging device including five lenses. Background technique [0002] With the development of science and technology and the improvement of application requirements, optical lenses have been applied in more and more fields, and the resolution requirements of optical lenses have also increased. In addition, for safety reasons, optical lenses for automotive applications have stricter requirements on many aspects of optical parameters. [0003] The traditional way to improve the lens resolution is to increase the number of lenses, but this will increase the lens size and manufacturing costs. Especially for the limited installation space of the vehicle-mounted lens module, it is very unfavorable to achieve miniaturization and improve system integration. In addition, in certain specific ap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/06G02B13/18
CPCG02B13/0045G02B13/06
Inventor 周召涛王东方
Owner NINGBO SUNNY AUTOMOTIVE OPTECH
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