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.
Published in:
Lightwave Technology, Journal of
(Volume:28
,
Issue:
22
)
Date of Publication: Nov.15, 2010