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Optical lens and imaging device

An optical lens and lens technology, applied in optics, optical components, instruments, etc., can solve the problems of abnormal use of lenses, strict temperature performance requirements, safety accidents, etc., and achieve the effect of high relative illumination and good temperature performance.

Active Publication Date: 2019-04-16
NINGBO SUNNY AUTOMOTIVE OPTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Secondly, the market’s requirements for the temperature performance of optical lenses for automotive applications are gradually becoming stricter. During the operation of the car, due to the chip’s heating and proximity to the engine, the operating temperature is extremely high, which can easily lead to abnormal use of the lens and cause safety accidents.

Method used

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  • Optical lens and imaging device
  • Optical lens and imaging device
  • Optical lens and imaging device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] 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.

[0078] Such as figure 1 As shown, the optical lens sequentially includes a first lens L1 , a second lens L2 , a third lens L3 and a fourth lens L4 along the optical axis from the object side to the imaging side.

[0079] 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.

[0080] The second lens L2 is a meniscus lens with positive refractive power, the object side S3 is convex, and the image side S4 is concave.

[0081]The third lens L3 is a meniscus lens with positive refractive power, the object side S6 is concave, and the image side S7 is convex.

[0082] The fourth lens L4 is a meniscus lens with negative refractive power, the object side S8 is c...

Embodiment 2

[0100] 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.

[0101] Such as figure 2 As shown, the optical lens sequentially includes a first lens L1 , a second lens L2 , a third lens L3 and a fourth lens L4 along the optical axis from the object side to the imaging side.

[0102] The first lens L1 is a meniscus lens with positive refractive power, the object side S1 is concave, and the image side S2 is convex.

[0103] The second lens L2 is a biconvex lens with positive refractive power, and its object side S4 and image side S5 are both convex.

[0104] The third lens L3 is a meniscus lens with positive refractive power, the object side S6 is concave, an...

Embodiment 3

[0119] 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.

[0120] Such as image 3As shown, the optical lens sequentially includes a first lens L1 , a second lens L2 , a third lens L3 and a fourth lens L4 along the optical axis from the object side to the imaging side.

[0121] The first lens L1 is a meniscus lens with positive refractive power, the object side S1 is concave, and the image side S2 is convex.

[0122] The second lens L2 is a biconvex lens with positive refractive power, and its object side S4 and image side S5 are both convex.

[0123] The third lens L3 is a meniscus lens with positive refractive power, the object side S6 is concave, and ...

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PUM

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Abstract

The invention discloses an optical lens and an imaging device which comprises the optical lens. The optical lens comprises a first lens, a second lens, a third lens and a fourth lens in order from theobject side to the image side along an optical axis. The first lens is a meniscus lens with positive focal power or negative focal power. The second lens has positive focal power, and the object sideis a convex surface. The third lens has positive focal power, wherein the object side thereof is a concave surface, and the image side thereof is a convex surface. The fourth lens has negative focalpower, wherein the object side thereof is a convex surface, and the image side thereof is a concave surface. According to the optical lens provided by the invention, at least one of high effects suchas high resolution, miniaturization, good temperature performance, back focal length, small front end diameter and high contrast can be achieved.

Description

technical field [0001] The present application relates to an optical lens and an imaging device including the optical lens, more particularly, the present application relates to an optical lens including four lenses and an imaging device. Background technique [0002] With the rapid development of automobile-related industries and the continuous improvement of the level of autonomous driving technology, optical lenses play a vital role in the visual sensing of automobiles, and their performance directly affects the safety of autonomous driving. [0003] As the "eyes" of the car, the automotive application optical lens has continuously improved its status in the automotive related industries. Especially in recent years, people have higher and higher requirements for the car interior view lens. Generally speaking, interior view lenses for vehicle applications are mainly used to monitor driver fatigue or the situation in the car, and need to be installed in the dashboard of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/004G02B13/005
Inventor 孙毅毛晨盛王东方
Owner NINGBO SUNNY AUTOMOTIVE OPTECH
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