Title :
The Impact of Inhomogeneities in the Phosphor Distribution on the Device Performance of Phosphor-Converted High-Power White LED Light Sources
Author :
Sommer, Christian ; Reil, Frank ; Krenn, Joachim R. ; Hartmann, Paul ; Pachler, Peter ; Tasch, Stefan ; Wenzl, Franz P.
Author_Institution :
Inst. of Surface Technol. & Photonics, Joanneum Res. Forschungsges.mbH, Weiz, Austria
Abstract :
We present a study by optical ray-tracing in order to determine the impact of an inhomogeneous phosphor distribution in the color conversion elements (CCE) of phosphor-conversion- based white LED light sources. It turns out that in particular the color temperature and its angular variation, but also the flux-output are highly sensitive towards phosphor distribution variations.
Keywords :
colour; light emitting diodes; light sources; phosphors; ray tracing; color conversion elements; color temperature; inhomogeneous phosphor distribution; optical ray-tracing; phosphor-conversion-based white LED light sources; Color; Detectors; Light emitting diodes; Nonhomogeneous media; Phosphors; Light-emitting diodes (LEDs); simulation; solid-state lighting;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2010.2079316
