Title:
CAMERA LENS
Document Type and Number:
WIPO Patent Application WO/2018/176694
Kind Code:
A1
Abstract:
A camera lens has a total effective focal length f and an entrance pupil diameter (EPD), and comprises, from an object side to an image side along an optical axis in sequence, a first lens (L1), a second lens (L2), a third lens (L3), and a fourth lens (L4). Both the first lens (L1) and the fourth lens (L4) have positive focal power. An image side surface (S2) of the first lens (L1) is a concave surface, and an object side surface (S7) of the fourth lens is a convex surface. The total effective focal length f and the EPD meet that f/EPD≤2.
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Inventors:
WANG XINQUAN (CN)
Application Number:
PCT/CN2017/093502
Publication Date:
October 04, 2018
Filing Date:
July 19, 2017
Export Citation:
Assignee:
ZHEJIANG SUNNY OPTICAL CO LTD (CN)
International Classes:
G02B13/18; G02B13/00
Foreign References:
| CN106680976A | 2017-05-17 | |||
| CN105652409A | 2016-06-08 | |||
| CN105676420A | 2016-06-15 | |||
| CN105807393A | 2016-07-27 | |||
| CN201984202U | 2011-09-21 | |||
| US6717748B2 | 2004-04-06 |
Attorney, Agent or Firm:
INSIGHT INTELLECTUAL PROPERTY LIMITED (CN)
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