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optical lens

A technology of optical lens and lens, applied in the field of optical lens, can solve the problems of non-compliance with miniaturization, long total length of lens, etc.

Active Publication Date: 2021-03-16
NINGBO SUNNY AUTOMOTIVE OPTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, a long focal length system is accompanied by a long TTL (optical length of the system), making the overall length of the lens longer, which does not meet the characteristics of miniaturization

Method used

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  • optical lens
  • optical lens
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] 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.

[0054] 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 and an imaging surface S10 along the optical axis from the object side to the imaging side.

[0055] 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.

[0056] 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.

[0057] The third lens L3 is a meniscus lens with negative refractive power, the object side S6 is convex, and the image side S7 is concave.

[0058] The fourth lens L4 is a meniscus lens with positive refractive powe...

Embodiment 2

[0069] 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.

[0070] 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 and an imaging surface S9 along the optical axis from the object side to the imaging side.

[0071] 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. The second lens L2 is a meniscus lens with positive refractive power, the object side S2 is convex, and the image side S3 is concave. In this embodiment, the first lens L1 and the second lens L2 are cemented to form a cement...

Embodiment 3

[0082] 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.

[0083] 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 and an imaging surface S10 along the optical axis from the object side to the imaging side.

[0084] 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.

[0085] The second lens L2 is a biconvex lens with positive refractive power, the object side S3 is convex, and the image side S4 is convex.

[0086]The third lens L3 is a meniscus lens with negative refractive power, the object side S6 is convex, and the image side S7 is concave.

[0087] The fourth lens L4 is a meniscus lens with positive refractive power, ...

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Abstract

The invention discloses an optical camera lens, which comprises a first lens, a second lens, a third lens and a fourth lens sequentially from an object side to an image side along the optical axis, wherein the first lens has negative focal power, the object side face is a convex face and the image side face is a concave face; the second lens has positive focal power; the third lens has negative focal power, the object side face is a convex face and the image side face is a concave face; and the fourth lens has positive focal power.

Description

technical field [0001] The present application relates to an optical lens, and more particularly, the present application relates to a long focal length optical lens including four lenses. Background technique [0002] With the maturity of technology, emerging science and technology such as unmanned driving will become more and more popular, which puts forward higher requirements for long-distance imaging of vehicle lenses. However, general vehicle lenses are required to have a larger field of view, and the focal length of a large field of view lens is usually short, which cannot clearly image distant objects. [0003] Long-distance imaging requires a lens with a longer focal length. Usually, a long focal length system is accompanied by a long TTL (optical length of the system), which makes the overall length of the lens longer, which does not meet the characteristics of miniaturization. However, for vehicle-mounted lenses with limited installation space, corresponding req...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/18G02B1/00G02B1/04
CPCG02B1/00G02B1/041G02B13/00G02B13/18
Inventor 新其铭栾晓宇李慧敏陈雨曦
Owner NINGBO SUNNY AUTOMOTIVE OPTECH
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