Lens transmission measurement for an absolute radiation thermometer

Journal Article · Wed Sep 11 00:00:00 EDT 2013 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4821399· OSTI ID:22218034

Hao, X.; Yuan, Z.; Lu, X. ^[1]

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1. Division of Thermometry and Materials Evaluation, National Institute of Metrology, Beijing (China)

The lens transmission for the National Institute of Metrology of China absolute radiation thermometer is measured by a hybrid method. The results of the lens transmission measurements are 99.002% and 86.792% for filter radiometers with center wavelengths 633 nm and 900 nm, respectively. These results, after correcting for diffraction factors and the size-of-source effect when the lens is incorporated within the radiometer, can be used for measurement of thermodynamic temperature. The expanded uncertainty of the lens transmission measurement system has been evaluated. It is 1.3×10{sup −3} at 633 nm and 900 nm, respectively.

• OSTI ID: 22218034
• Journal Information: AIP Conference Proceedings, Vol. 1552, Issue 1; Conference: 9. international temperature symposium, Los Angeles, CA (United States), 19-23 Mar 2012; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
DIFFRACTION
FILTERS
LENSES
RADIOMETERS
TEMPERATURE MEASUREMENT
THERMOMETERS
TRANSMISSION
WAVELENGTHS