Title:
PHOTOGRAPHY CAMERA
Document Type and Number:
WIPO Patent Application WO/2019/052145
Kind Code:
A1
Abstract:
A photography camera successively comprising, along an optical axis from an object side to an image side: a first lens (L1), a second lens (L2), a third lens (L3) and a fourth lens (L4). The first lens (L1) has a negative focal power; the third lens (L3) has a positive focal power; and the second lens (L2) and the fourth lens (L4) both have a focal power, wherein an object side face (S5) of the third lens (L3) is convex, an image side face (S8) of the fourth lens (L4) is concave, a radius of curvature R5 of the object side face (S5) of the third lens (L3) and a radius of curvature R8 of the image side face (S8) of the fourth lens (L4) satisfy 0.7＜R5/R8＜1.2.
Inventors:
HUANG LIN (CN)
Application Number:
PCT/CN2018/080108
Publication Date:
March 21, 2019
Filing Date:
March 23, 2018
Export Citation:
Assignee:
ZHEJIANG SUNNY OPTICAL CO LTD (CN)
International Classes:
G02B9/34
Foreign References:
| CN207123647U | 2018-03-20 | |||
| CN107422459A | 2017-12-01 | |||
| CN106842549A | 2017-06-13 | |||
| CN106324802A | 2017-01-11 | |||
| US8369031B2 | 2013-02-05 | |||
| CN202003075U | 2011-10-05 |
Attorney, Agent or Firm:
INSIGHT INTELLECTUAL PROPERTY LIMITED (CN)
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