Validation of cie averaged led intensity measurement by comparing results of the photometric and spectroradiometric methods with different traceabilities

摘要

We compare two different methods for measuring the averaged LED intensity defined by CIE. One is the photometric method using a photometer, whose luminous responsivity is traceable to the detector-based candela scale of KRISS. The other is the spectroradiometric method using a spectroradiometer, which is calibrated with a spectral irradiance standard lamp supplied by NIST. From the agreement of the results between these two methods with different traceabilities, we validate our measurement capability for the CIE averaged LED intensity.