Title :
NIST reference spectral responsivity scales for improving the SI candela and kelvin
Author :
Eppeldauer, G.P. ; Brown, S.W. ; Lykke, K.R. ; Miller, C.C. ; Ohno, Y. ; Yoon, H.W.
Author_Institution :
Nat. Inst. of Stand. & Technol., Gaithersburg, MD
Abstract :
Both SI units, the candela and the kelvin were originally derived from standard blackbody sources. Recently, instead of source-based calibrations, they both have been realized with optical detector standards. Recent decrease of the measurement uncertainties in detector-based calibrations resulted in improved uncertainties in these SI units.
Keywords :
calibration; measurement uncertainty; optical variables measurement; radiometers; units (measurement); SI units; detector-based calibrations; measurement uncertainties; reference spectral responsivity scales; source-based calibrations; standard blackbody sources; Calibration; Detectors; Kelvin; NIST; Optical filters; Optical variables control; Photometry; Radiometers; Temperature; Uncertainty;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2008. CPEM 2008. Conference on
Conference_Location :
Broomfield, CO
Print_ISBN :
978-1-4244-2399-6
Electronic_ISBN :
978-1-4244-2400-9
DOI :
10.1109/CPEM.2008.4574770
