NDLI: A design of uncooled thermal image system to block image blurring using an optimum detector warm-shield

Content Provider	IEEE Xplore Digital Library
Author	Junho Jeong Byungyeol Youn
Copyright Year	2009
Description	Author affiliation: Samsung Thales Co., Ltd., 304, Chang-Li, Namsa-Myun, Cheoin-Gu, Yongin-City, Gyeonggi-Do, Korea 449-886 (Junho Jeong; Byungyeol Youn)
Abstract	Uncooled TIS is in the spotlight for its small size and low-voltage operation for personal and portable use compare to other TIS. Generally, uncooled TIS using temperature control by TEC converts the gap between TEC temperature and input-image into voltage by ROIC and outputs the analog image. For cooled detector, it is possible to block undesirable infrared input since F number of the optics and the detector are same but for uncooled detector, it is easy to get undesirable infrared input around because the F numbers are different. It becomes more obvious when temperature gap between the equipment and background gets bigger. For TIS, background temperature easily changes inside the system and around the detector because the radiating heat from the electrical circuit inside the system is getting higher as usage time passes, and it makes worse the non-uniformity output characteristics of the detector. In particular, the temperature change of the system itself which depends on its setting position and other temperature-changing factors like electrical circuit inside the system make the additional non-uniformity worse which caused by infrared photon radiates from structures which includes optics and detector. This article would indicate the method of minimizing its image blurring which originates from the F number gap between optics and detector.
Starting Page	1
Ending Page	2
File Size	566442
Page Count	2
File Format	PDF
ISBN	9781424454167
DOI	10.1109/ICIMW.2009.5324781
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-21
Publisher Place	South Korea
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Infrared detectors Temperature sensors Optical signal processing Optical detectors Optical sensors Temperature control Temperature dependence Circuits Optical noise Thermal resistance
Content Type	Text
Resource Type	Article

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