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.
© 2010 IEEE
Christian Sommer, Frank Reil, Joachim R. Krenn, Paul Hartmann, Peter Pachler, Stefan Tasch, and Franz P. Wenzl, "The Impact of Inhomogeneities in the Phosphor Distribution on the Device Performance of Phosphor-Converted High-Power White LED Light Sources," J. Lightwave Technol. 28, 3226-3232 (2010)