FAR INFRARED IMAGING LENS SET, OBJECTIVE LENS AND DETECTOR

WIPO Patent Application WO/2016/019539

A1

A far infrared detector and objective lens and lens set thereof. The far infrared imaging lens set (10) comprises a first lens (100) and a second lens (200) arranged in sequence along a principal axis; the first lens (100) has a first curved surface (102) having a radius of curvature of 2.4 x (1±5%) mm and a second curved surface (104) having a radius of curvature of 2 x (1±5%) mm; the second lens (200) has a third curved surface (202) having a radius of curvature of 50 x (1±5%) mm and a fourth curved surface (204) having a radius of curvature of 60 x (1±5%) mm; wherein the first curved surface (102), the second curved surface (104), the third curved surface (202), and the fourth curved surface (204) are arranged in sequence; the first curved surface (102), the second curved surface (104) and the third curved surface (202) are all convex to the object side, and the fourth curved surface is convex to the image side. Distant targets can be detected in dark and foggy environments, and imaging capability is high.

JP5065596	Diaphragm exchange device
JP2008216765	INFRARED OPTICAL SYSTEM AND DEVICE
WO/2005/081040	SPHERICALLY-ENCLOSED FOLDED IMAGING SYSTEM

LI JIAYING (CN)
ZHOU CHAOMING (CN)
SUN BO (CN)
GAO YUNFENG (CN)

PCT/CN2014/083866

February 11, 2016

August 07, 2014

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HANS LASER TECHNOLOGY CO LTD (CN)

G02B13/14; G02B9/06; G02B11/02

CN102778747A	2012-11-14
CN102466861A	2012-05-23
CN103299228A	2013-09-11
CN101937124A	2011-01-05
JP2006235139A	2006-09-07
TWM320680U	2007-10-11

ADVANCE CHINA IP LAW OFFICE (CN)
广州华进联合专利商标代理有限公司 (CN)

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