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Patent Searching and Data


Title:
OPTICAL LENS SET
Document Type and Number:
WIPO Patent Application WO/2018/218855
Kind Code:
A1
Abstract:
An optical lens set, comprising in sequence from an object side to an image side of an optical axis: a first lens (E1), a second lens (E2), a third lens (E3) and a fourth lens (E5). The first lens (E1) has positive focal power and a convex object side surface (S1); the second lens (E2) has negative focal power and a concave object side surface (S3); the third lens (E3) has positive focal power or negative focal power; and the fourth lens (E4) has negative focal power. Air space T23 of the second lens (E2) and the third lens (E3) in the optical axis and air space T34 of the third lens (E3) and the fourth lens (E4) in the optical axis satisfy: T23/T34<0.2.

Inventors:
LIU, Binbin (No.66-68 Shunyu Road, YuyaoNingbo, Zhejiang 0, 315400, CN)
WENREN, Jianke (No.66-68 Shunyu Road, YuyaoNingbo, Zhejiang 0, 315400, CN)
DAI, Fujian (No. 66-68 Shunyu Road, YuyaoNingbo, Zhejiang 0, 315400, CN)
Application Number:
CN2017/107329
Publication Date:
December 06, 2018
Filing Date:
October 23, 2017
Export Citation:
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Assignee:
ZHEJIANG SUNNY OPTICAL CO.,LTD (No. 66-68 Shunyu Road, YuyaoNingbo, Zhejiang 0, 315400, CN)
International Classes:
G02B13/00; G02B13/18
Foreign References:
CN106997089A2017-08-01
CN101762864A2010-06-30
CN101183168A2008-05-21
CN201133964Y2008-10-15
CN101655599A2010-02-24
US20110254992A12011-10-20
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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