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Patent Searching and Data


Title:
OPTICAL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/184367
Kind Code:
A1
Abstract:
Disclosed is an optical system, the optical system sequentially comprising along an optical axis from an imaging side to an image source side: a first lens, a second lens, a third lens, a fourth lens and a fifth lens, wherein the first lens has positive focal power, and a surface thereof close to the image source side is a concave surface; the second lens has positive focal power, and a surface thereof close to the image source side is a convex surface; the third lens has negative focal power, and a surface thereof close to the image source side is a convex surface; the fourth lens has focal power, and a surface thereof close to the imaging side is a concave surface; and the fifth lens has focal power. An effective focal distance f2 of the second lens and a total effective focal distance f of the optical system meets 0<f2/f<1.

Inventors:
HUANG, Lin (No. 66-68 Shunyu Road, Yuyao Ningbo City, Zhejiang 0, 315400, CN)
LOU, Qiqi (No. 66-68 Shunyu Road, Yuyao Ningbo City, Zhejiang 0, 315400, CN)
Application Number:
CN2018/114512
Publication Date:
October 03, 2019
Filing Date:
November 08, 2018
Export Citation:
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Assignee:
ZHEJIANG SUNNY OPTICAL CO., LTD (No. 66-68 Shunyu Road, Yuyao Ningbo City, Zhejiang 0, 315400, CN)
International Classes:
G02B13/00; G02B9/60; G02B11/30; G02B13/06
Foreign References:
CN108388006A2018-08-10
CN205067851U2016-03-02
CN107436474A2017-12-05
CN1949017A2007-04-18
CN103955046A2014-07-30
Attorney, Agent or Firm:
INSIGHT INTELLECTUAL PROPERTY LIMITED (19 A, Tower A InDo Building,No. 48A Zhichun Road, Haidian District, Beijing 8, 100098, CN)
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