Micro-Cavity Perfect Blackbody Composite With Good Heat Transfer Towards A Flat-Plate Reference Radiation Source For Thermal Imagers
OPTICS LETTERS(2021)
摘要
One of the key measures to secure reliable fever screening is to calibrate a thermal imager with an accurate flat-plate blackbody device in real time. We provide durable perfect blackbody plates with both high emissivity of >0.998 and good heat transfer, ideal for a high-precision reference radiation source. Reflectance measurements and heat transfer simulation demonstrate that a micro-cavity composite of a thin resin double layer or resin mixture with thermally conductive filler is an important solution for improving the emissivity and thermal performance of blackbody plates. (C) 2021 Optical Society of America
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关键词
thermal imagers,perfect blackbody composite,good heat transfer,heat transfer,micro-cavity,flat-plate
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