Abstract

Onsite reference infrared radiators are used to correct thermal imagers for noncontact fever screening in real time. We have developed a flat-plate reference radiator of the highest accuracy to enhance reliability of the fever screening. Our contact-durable blackbody composite with good heat transfer, which has a microcavity structured surface offering high emissivity (${\gt}{0.999}$), was employed for the emissive surface of the reference radiator. Evaluation of the developed reference radiator regarding the spectral emissivity, in-plane uniformity, and temperature stability demonstrated an unprecedentedly small uncertainty of 0.10°C for the radiance temperature (95% level of confidence).

© 2022 Optica Publishing Group

Micro-cavity perfect blackbody composite with good heat transfer towards a flat-plate reference radiation source for thermal imagers

Yuhei Shimizu, Hiroshi Koshikawa, Masatoshi Imbe, Tetsuya Yamaki, Kenji Godo, Naohiko Sasajima, and Kuniaki Amemiya
Opt. Lett. 46(19) 4871-4874 (2021)

Large-area perfect blackbody sheets having aperiodic array of surface micro-cavities for high-precision thermal imager calibration

Yuhei Shimizu, Hiroshi Koshikawa, Masatoshi Imbe, Tetsuya Yamaki, and Kuniaki Amemiya
Opt. Express 28(15) 22606-22616 (2020)

Precision blackbody sources for radiometric standards

V. I. Sapritsky, B. B. Khlevnoy, V. B. Khromchenko, B. E. Lisiansky, S. N. Mekhontsev, U. A. Melenevsky, S. P. Morozova, A. V. Prokhorov, L. N. Samoilov, V. I. Shapoval, K. A. Sudarev, and M. F. Zelener
Appl. Opt. 36(22) 5403-5408 (1997)

High-temperature miniature blackbody radiation sources

Semen M. Chernin
Appl. Opt. 36(7) 1580-1591 (1997)

Blackbody calibration sources of high accuracy for a spaceborne infrared instrument: the Along Track Scanning Radiometer

I. M. Mason, P. H. Sheather, J. A. Bowles, and G. Davies
Appl. Opt. 35(4) 629-639 (1996)