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22 August 2011 Investigation of blackbody 3500M
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High temperature blackbody BB3500M is used as the primary standard of spectral irradiance at the National Institute of Metrology (NIM). In order to find out whether BB3500M is suitable or not in the realization of the spectral irradiance scale, we investigated the temperature property of blackbody. On the other hand, a full description of the property of BB3500M can help us to evaluate the uncertainty due to BB3500M. In the experiment, feedback control mode was used to guarantee the temperature stability during the whole process. We measured the temperature drift in an hour, which is needed in transferring the spectral value to the standard lamp. Results show that the temperature change is less than 0.6 K when the temperature is near 3020 K. Also, we measured the uniformity of the bottom of the radiator of BB3500M, the result showed that the non-uniformity is less than 0.5 K in the effective area around 2870 K.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Zhi-feng Wu, Cai-hong Dai, Jia-Lin Yu, Bo Huang, and Hui-quan Ou-Yang "Investigation of blackbody 3500M", Proc. SPIE 8192, International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging, 819250 (22 August 2011);

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