Radiospectroscopy is the absolute measurement of electromagnetic radiation within a specific wavelength range. For characterization of LED components, light sources and lamps we are interested in absolute measurement of the spectral power distribution, SPD, in the visible and near infrared region. Using integrating spheres for light collection setups for absolute total spectral flux is realized at the LED Light Lab at DTU Fotonik, Risø Campus. From these, both total radiant and luminous flux is determined and through electrical power measurement also the efficiency is determined. From the SPD colorimetric quantities like color coordinates, color temperature and color rendering indices are calculated. The facilities and special issues concerning LED measurements compared to traditional light sources are explained and examples from the “LED lighting quality program”, a project supported by the Danish Energy Association are presented.
|Publication status||Published - 2011|
|Event||Danish Optical Society: Spectroscopy Day - DTU Risø, Niels Bohr Auditorium/Koch Auditorium, Roskilde, Denmark|
Duration: 30 Sep 2011 → …
|Conference||Danish Optical Society|
|Location||DTU Risø, Niels Bohr Auditorium/Koch Auditorium|
|Period||30/09/2011 → …|