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Patent Searching and Data


Title:
OPTICAL IMAGING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2018/233195
Kind Code:
A1
Abstract:
Provided is an optical imaging system, along an optical axis and from an object side to an image side, sequentially comprising: a first lens (L1), a second lens (L2), a third lens (L3) and a fourth lens (L4), wherein the first lens has a positive focal power or a negative focal power, an object-side surface (S1) thereof is a concave surface, and an image-side surface (S2) thereof is a convex surface; both the second lens and the third lens have a positive focal power; the fourth lens has a positive focal power or a negative focal power; an Abbe number V1 of the first lens and an Abbe number V4 of the fourth lens satisfy the relationship |V1-V4| ≤ 20; and the Abbe number V1 of the first lens and an Abbe number V2 of the second lens satisfy the relationship 20 ≤ |V1-V2| ≤ 50.

Inventors:
WANG, Xinquan (No. 66-68 Shunyu Road, YuyaoNingbo, Zhejiang 0, 315400, CN)
Application Number:
CN2017/111841
Publication Date:
December 27, 2018
Filing Date:
November 20, 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; G02B9/34; G02B15/00
Foreign References:
CN107092077A2017-08-25
CN106468813A2017-03-01
CN106526801A2017-03-22
CN105988192A2016-10-05
CN105572851A2016-05-11
CN106597636A2017-04-26
CN105319678A2016-02-10
CN106019535A2016-10-12
CN105842824A2016-08-10
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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