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Optical imaging system

An optical imaging system and optical axis technology, applied in optics, optical components, instruments, etc., can solve the problems of strict correction of color distortion consistency, inability to achieve precision, high optical flow positioning, etc.

Active Publication Date: 2017-08-25
ZHEJIANG SUNNY OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional optical imaging system does not have strict correction for the monotonicity and consistency of color distortion, so it cannot achieve high-precision optical flow positioning

Method used

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Experimental program
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Effect test

Embodiment 1

[0069] Refer to the following Figures 1 to 2E An optical imaging system according to Embodiment 1 of the present application is described. figure 1 A schematic structural diagram of an optical imaging system according to Embodiment 1 of the present application is shown.

[0070] Such as figure 1 As shown, the optical imaging system sequentially includes a first lens L1 , a second lens L2 , a third lens L3 , a fourth lens L4 and an imaging surface S11 along the optical axis from the object side to the imaging side. The optical imaging system may further include an electronic photosensitive element disposed on the imaging surface S11.

[0071] The first lens L1 has positive refractive power, its object side S1 is concave, and its image side S2 is convex, and both the object side S1 and the image side S2 of the first lens L1 are aspherical.

[0072] The second lens L2 has positive refractive power, its object side S3 is concave, and its image side S4 is convex, and both the o...

Embodiment 2

[0095] Refer to the following Figure 3 to Figure 4E An optical imaging system 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. image 3 A schematic structural diagram of an optical imaging system according to Embodiment 2 of the present application is shown.

[0096] Such as image 3 As shown, the optical imaging system sequentially includes a first lens L1 , a second lens L2 , a third lens L3 , a fourth lens L4 and an imaging surface S11 along the optical axis from the object side to the imaging side. The optical imaging system may further include an electronic photosensitive element disposed on the imaging surface S11.

[0097] The first lens L1 has positive refractive power, its object side S1 is concave, and its image side S2 is convex, and both the object side S1 and the image side S2 of the first lens L1 are asphe...

Embodiment 3

[0112] Refer to the following Figure 5 to Figure 6E An optical imaging system according to Embodiment 3 of the present application is described. Figure 5 A schematic structural diagram of an optical imaging system according to Embodiment 3 of the present application is shown.

[0113] Such as Figure 5 As shown, the optical imaging system sequentially includes a first lens L1 , a second lens L2 , a third lens L3 , a fourth lens L4 and an imaging surface S11 along the optical axis from the object side to the imaging side. The optical imaging system may further include an electronic photosensitive element disposed on the imaging surface S11.

[0114] The first lens L1 has positive refractive power, its object side S1 is concave, and its image side S2 is convex, and both the object side S1 and the image side S2 of the first lens L1 are aspherical.

[0115] The second lens L2 has positive refractive power, its object side S3 is convex, and its image side S4 is convex, and bot...

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Abstract

The invention discloses an optical imaging system. The optical imaging system comprises a first lens, a second lens, a third lens and a fourth lens sequentially from an object side to an image side along an optical axis, wherein the first lens has positive optical power or negative optical power, the object side surface is a concave surface, and the image side surface is a convex surface; the second lens and the third lens have positive optical power; the fourth lens has positive optical power or negative optical power; the Abbe number V1 of the first lens and the Abbe number V4 of the fourth lens meet |V1-V4|< / =20; and the Abbe number V1 of the first lens and the Abbe number V2 of the second lens meet 20< / =|V1-V2|< / =50.

Description

technical field [0001] The present application relates to an optical imaging system, and more particularly, the present application relates to an optical imaging system including four lenses. Background technique [0002] In recent years, with the improvement of the performance and size reduction of common photosensitive elements such as CCD (photosensitive coupling device) or CMOS (complementary metal oxide semiconductor device), the high imaging quality and miniaturization of the optical imaging system used in matching higher requirements have been put forward. [0003] With the development of science and technology and the popularization of portable electronic products, optical imaging systems using CCD or CMOS are widely used in various fields. For example, today's optical imaging systems using CCD or CMOS can be used for optical flow positioning and navigation in addition to routinely used to obtain image information. However, the traditional optical imaging system do...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/06
CPCG02B13/004G02B13/06
Inventor 王新权
Owner ZHEJIANG SUNNY OPTICAL CO LTD
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