Light source using a yellow-to-red-emitting phosphor
AssigneeOSRAM Opto Semiconductors GmbH
InventorsGeorg Bogner, Ir G. Botty, Bert Braune, Hubertus T. Hintzen, Jost W. H. van Krevel, Guenter Waitl
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Abstract
A light source uses a yellow to red emitting phosphor with a host lattice of the nitridosilicate type MxSiyNz:Eu, wherein M is at least one of an alkaline earth metal chosen from the group Ca, Sr, Ba and wherein z=2/3x+4/3y.
Claims10
Light source using a yellow-to-red-emitting phosphor, wherein the phosphor converts at least partially radiation of a primary light source, characterised in that said phosphor has a host lattice of the nitridosilicate type MxSiyNz:Eu, wherein M is at least one of an alkaline earth metal chosen from the group Ca, Sr, Ba, Zn and wherein z=⅔x+{fraction (4/3)}y.
Dependencies are inferred from the claim text.