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optical lens

An optical lens and optical technology, applied in the field of optical lens, can solve the problems of out-of-focus image blur, large glass aspheric surface processing restrictions, high lens cost, etc., and achieve the effect of good thermal compensation

Active Publication Date: 2022-01-18
NINGBO SUNNY AUTOMOTIVE OPTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the further improvement of resolution requirements, the continuous increase of lenses is bound to conflict with miniaturization and low cost
In addition, in conventional technology, aspherical lenses are usually used to improve imaging performance. When plastic aspheric lenses are used, due to the large thermal expansion coefficient of plastics, there is a problem of blurring the image surface due to temperature changes; when using glass aspheric lenses At the same time, the cost of the lens will be too high, and the processing limit of the glass aspheric surface is relatively large

Method used

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Examples

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Embodiment 1

[0064] 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.

[0065] 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 image side.

[0066] The first lens L1 is a meniscus lens with positive refractive power, its object side S1 is convex, and its image side S2 is concave; the second lens L2 is a meniscus lens with negative refractive power, its object side S3 is concave, and its image side S2 is concave. S4 is a convex surface; the third lens L3 is a biconvex lens with positive refractive power, and its object side S5 and image side S6 are both convex surfaces; the fourth lens L4 is a meniscus lens with positive refract...

Embodiment 2

[0079] 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.

[0080] 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 image side.

[0081] The first lens L1 is a biconvex lens with positive refractive power, and its object side S1 and image side S2 are both convex surfaces; the second lens L2 is a meniscus lens with negative refractive power, its object side S3 is concave, and its image side S4 is convex surface; the third lens L3 is a biconvex lens with positive refractive power, a...

Embodiment 3

[0094] Refer to the following image 3 An optical lens according to Embodiment 3 of the present application is described. image 3 A schematic structural diagram of an optical lens according to Embodiment 3 of the present application is shown.

[0095] 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 image side.

[0096] The first lens L1 is a meniscus lens with positive refractive power, its object side S1 is convex, and its image side S2 is concave; the second lens L2 is a meniscus lens with negative refractive power, its object side S3 is concave, and its image side S2 is concave. S4 is a convex surface; the third lens L3 is a biconvex lens with positive refractive power, and its object side S5 and image side S6 are both convex surfaces; the fourth lens L4 is a meniscus lens with positive refracti...

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Abstract

The present application discloses an optical lens, and the optical lens sequentially includes: a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens along an optical axis from the object side to the image side. The first lens has positive power, and its object side is convex; the second lens has negative power, its object side is concave, and its image side is convex; the third lens has positive power, its object side and image side are both Convex; the fourth lens has positive power, its object side is convex, and its image side is concave; the fifth lens has negative power, its object side and image side are both concave; the sixth lens has positive power, its object The sides are convex and the like sides are concave.

Description

technical field [0001] The present application relates to an optical lens, and more particularly, the present application relates to an optical lens including six lenses. Background technique [0002] With the development of science, more and more fields need to use lenses as "eyes", such as vehicle, monitoring, projection, industrial and other fields. Especially with the development and popularization of emerging technologies such as active driving or assisted driving, the market has more and more demand for vehicle-mounted lenses, and the resulting imaging requirements for lenses are also getting higher and higher, especially resolution requirements. [0003] For automotive lenses, considering that they need to be used in harsh outdoor environments, it is particularly important to be able to maintain stable imaging performance at different temperatures, so as to prevent the lens from blurring and endangering the safety of drivers. At the same time, due to the limitation o...

Claims

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Application Information

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