Patent ID: 8931922
Filing Date: 2015-01-13
Classification: C09K,H01L

Abstract:
1. A wavelength-conversion plate, comprising: a solid, self-supporting flat structure having a reflector and a plurality of substantially fully dense, sintered ceramic converters, said converters comprising a ceramic material capable of converting incident primary light to a secondary light, wherein each converter is different from every other converter with regard to its ceramic material or an activator concentration of its ceramic material and said converters have a form of nested concentric cylinders; said reflector surrounding said converters and comprising a substantially fully dense, sintered ceramic material capable of reflecting secondary light emitted by said converters, said converters being inlaid into said reflector; and an interface between at least one converter and said reflector, wherein said reflector abuts said at least one converter and said converters are retained by said reflector without use of an adhesive or bonding agent.