Patent ID: 8256914
Filing Date: 2012-09-04
Classification: H01L

Abstract:
1. A light-converting element for mixing light, comprising: a first light source emitting a first primary radiation and a second light source emitting a second primary radiation; a ceramic light converting element positioned over said first light source and said second light source and converting at least one of said primary radiations as an emitted secondary radiation; an optical coupling layer positioned between said ceramic light converting element and said first light source and said second light source; said ceramic light converting element having a microstructure selected to be such that the color point of the mixed light produced from said primary and said secondary radiation is substantially independent of an angle of viewing; said ceramic light-converting material having a plurality of oxidic particles having a mean diameter of between about 50 nm to about 3000 nm, said ceramic light-converting material further having a plurality of pores having a mean diameter of between about 250 nm to about 2000 nm.