Spectral blue shift of thermal radiators

Yifeng Wang; Chitao Feng

doi:10.1117/12.317814

18 August 1998 Spectral blue shift of thermal radiators

Yifeng Wang, Chitao Feng

Proceedings Volume 3505, Imaging System Technology for Remote Sensing; (1998) https://doi.org/10.1117/12.317814
Event: Asia-Pacific Symposium on Remote Sensing of the Atmosphere, Environment, and Space, 1998, Beijing, China

Abstract

The traditional concept of graybody in IR application is investigated and new viewpoints are proposed. It is found that the spectral distribution of thermal radiation of a real body with emissivity (epsilon) < 1, compared with that of absolute blackbody, will shift to shortwave region, i.e. the blue shift phenomena will appear. This conclusion is obtained from studies on, first, the analyses and research of radiation characteristic of snow in visible and IR regions, second, the physical and mathematical analyses of thermal radiation of pure metals, and finally, the concept study of radiation temperature, luminance temperature and color temperature. Some reviews and suggestions are given to related problems in RI technology.

Citation Download Citation

Yifeng Wang and Chitao Feng "Spectral blue shift of thermal radiators", Proc. SPIE 3505, Imaging System Technology for Remote Sensing, (18 August 1998); https://doi.org/10.1117/12.317814

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