Title:
FAR INFRARED IMAGING LENS SET, OBJECTIVE LENS AND FIRE SOURCE DETECTOR
Document Type and Number:
WIPO Patent Application WO/2016/019537
Kind Code:
A1
Abstract:
A far infrared imaging lens set (10), an objective lens employing said far infrared imaging lens set (10), and a fire source detector employing said objective lens, the infrared imaging lens set (10) comprising a first lens (100), a second lens (200), and a third lens (300) arranged in sequence along a principal axis: the first lens (100) has a first curved surface (102) and a second curved surface (104), the radius of curvature of said first curved surface (102) being 57 x (1±5%) mm, and the radius of curvature of said second curved surface (104) being 85 x (1±5%) mm; the second lens (200) has a third curved surface (202) and a fourth curved surface (204), the radius of curvature of said third curved surface (202) being 210 x (1±5%) mm, and the radius of curvature of said fourth curved surface (204) being 37 x (1±5%) mm; and the third lens (300) has a fifth curved surface (302) and a sixth curved surface (304), the radius of curvature of said fifth curved surface (302) being 100 x (1±5%) mm, and the radius of curvature of said sixth curved surface (304) being 400 x (1±5%) mm; wherein the first curved surface (102), the second curved surface (104), the third curved surface (202), the fourth curved surface (204), the fifth curved surface (302), and the sixth curved surface (304) are arranged in sequence, and are all convex to the object side.
Inventors:
LI JIAYING (CN)
ZHOU CHAOMING (CN)
SUN BO (CN)
HUANG HAI (CN)
CHEN YUQING (CN)
GAO YUNFENG (CN)
ZHOU CHAOMING (CN)
SUN BO (CN)
HUANG HAI (CN)
CHEN YUQING (CN)
GAO YUNFENG (CN)
Application Number:
PCT/CN2014/083851
Publication Date:
February 11, 2016
Filing Date:
August 07, 2014
Export Citation:
Assignee:
HANS LASER TECHNOLOGY CO LTD (CN)
International Classes:
G02B13/14; G01J5/08; G08B17/12
Foreign References:
| US5214532A | 1993-05-25 | |||
| CN202216765U | 2012-05-09 | |||
| US20120275016A1 | 2012-11-01 | |||
| US5808799A | 1998-09-15 | |||
| CN102681147A | 2012-09-19 | |||
| CN102103219A | 2011-06-22 | |||
| CN201037948Y | 2008-03-19 | |||
| JPS59204726A | 1984-11-20 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
广州华进联合专利商标代理有限公司 (CN)
广州华进联合专利商标代理有限公司 (CN)
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