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Proceedings Paper

Differences in calculation methods of effective emissivity of blackbody cavity
Author(s): Yuxuan Ma; Guojin Feng
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Paper Abstract

It is very difficult to directly measure the effective emissivity of a blackbody cavity, which is generally calculated by the indirect methods. Different calculation methods have certain differences. In this paper, the STEEP software, TRACEPRO software and approximation formula are used to calculate the effective emissivity of the blackbody cavity for the three commonly used blackbody models of integrating sphere, cylindrical and cylindrical-conical, and Compare the results of emissivity greater than 0.99. The results show that the consistency of the results of the three methods in calculating the cylindrical type and the integrating sphere type blackbody can be better than 0.03%. When calculating the conical black body, the difference between the results of the approximate formula and the other two schemes is less than 0.07%. The calculation results of the scheme tend to be consistent with the increase of the emissivity of the model.

Paper Details

Date Published: 12 March 2020
PDF: 7 pages
Proc. SPIE 11438, 2019 International Conference on Optical Instruments and Technology: Optoelectronic Imaging/Spectroscopy and Signal Processing Technology, 114380P (12 March 2020); doi: 10.1117/12.2548082
Show Author Affiliations
Yuxuan Ma, National Institute of Metrology (China)
Guojin Feng, National Institute of Metrology (China)


Published in SPIE Proceedings Vol. 11438:
2019 International Conference on Optical Instruments and Technology: Optoelectronic Imaging/Spectroscopy and Signal Processing Technology
Guohai Situ; Xun Cao; Wolfgang Osten, Editor(s)

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