Title:
OPTICAL IMAGING LENS
Document Type and Number:
WIPO Patent Application WO/2019/134349
Kind Code:
A1
Abstract:
Disclosed is an optical imaging lens, comprising in order from an object side to an image side along an optical axis: a first lens, a second lens, a third lens and a fourth lens. The first lens has positive focal power, and an object side face thereof is a convex face; the second lens has a positive focal power or a negative focal power, an object side face thereof is a concave face, and an image side face thereof is a convex face; the third lens has a positive focal power, an object side face thereof is a concave face, and an image side face thereof is a convex face; and the fourth lens has a positive focal power or a negative focal power. The effective focal distance f1 of the first lens and the total effective focal distance f of the optical imaging lens satisfy 1.2＜f1/f＜1.8.
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Inventors:
SONG LITONG (CN)
HUANG LIN (CN)
HUANG LIN (CN)
Application Number:
PCT/CN2018/092209
Publication Date:
July 11, 2019
Filing Date:
June 21, 2018
Export Citation:
Assignee:
ZHEJIANG SUNNY OPTICAL CO LTD (CN)
International Classes:
G02B13/00; G02B13/18
Foreign References:
| CN107976787A | 2018-05-01 | |||
| US20050046970A1 | 2005-03-03 | |||
| JP2005062559A | 2005-03-10 | |||
| CN103852865A | 2014-06-11 | |||
| CN105137571A | 2015-12-09 | |||
| JP2000180719A | 2000-06-30 |
Attorney, Agent or Firm:
INSIGHT INTELLECTUAL PROPERTY LIMITED (CN)
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