Title:
PROJECTION LENS
Document Type and Number:
WIPO Patent Application WO/2016/011802
Kind Code:
A1
Abstract:
A projection lens, comprising in sequence from the imaging side to the image source side thereof: a first lens (E1) having negative focal power, the imaging side thereof being concave; a reflective optical surface (E2) for bending the light path; a second lens (E3) having positive focal power, the image source side thereof being convex; a third lens (E4) having positive focal power, the image source side thereof being convex; and an optical diaphragm being arranged between the first lens (E1) and the second lens (E3); the projection lens satisfies the following relationship: 0.4
Inventors:
HUANG LIN (CN)
DAI FUJIAN (CN)
DAI FUJIAN (CN)
Application Number:
PCT/CN2015/072054
Publication Date:
January 28, 2016
Filing Date:
January 30, 2015
Export Citation:
Assignee:
ZHEJIANG SUNNY OPTICS CO LTD (CN)
International Classes:
G02B1/00; G02B13/18; G02B13/00; G02B13/06; G02B13/14
Foreign References:
| CN104142566A | 2014-11-12 | |||
| CN204009210U | 2014-12-10 | |||
| CN103901586A | 2014-07-02 | |||
| CN101042463A | 2007-09-26 | |||
| US20110141339A1 | 2011-06-16 | |||
| US20110141576A1 | 2011-06-16 |
Other References:
None
See also references of EP 3001235A4
See also references of EP 3001235A4
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC (CN)
北京清亦华知识产权代理事务所（普通合伙） (CN)
北京清亦华知识产权代理事务所（普通合伙） (CN)
Download PDF:
Previous Patent: PROJECTION LENS
Next Patent: TOUCH SCREEN BASED APPLICATION LAYOUT ARRANGEMENT METHOD AND TERMINAL DEVICE
Next Patent: TOUCH SCREEN BASED APPLICATION LAYOUT ARRANGEMENT METHOD AND TERMINAL DEVICE