The relative spectral power distribution and correlated color temperature of the visible radiation from a tungsten filament lamp have been measured by a radiometric comparison with thermopiles of known spectral responsivity making use of a series of glass filters transmitting in different spectral bands. The method is independent of Planck’s formula and the temperature scale.
© 1971 Optical Society of America
Original Manuscript: May 11, 1971
Published: December 1, 1971
J. R. Moore, "Verification of the NPL Standards of Relative Spectral Power Distribution by Filter Radiometry," Appl. Opt. 10, 2651-2656 (1971)