Patent ID: 8426871

Claim:
A stokes radiation emitting device comprising: a) a light source; and b) an energy downconverting phosphor material on the light source, the phosphor material comprising at least one infrared radiation emitting phosphor that absorbs light energy emitted from said light source and emits infrared radiation responsive to said absorbed light energy, wherein said phosphor material comprises one or more rare earth element doped garnets, one or more rare earth element doped iron garnets, one or more mixed garnets doped with one or more rare earth elements, one or more rare earth element doped colquiriites, at least one garnet host phosphor doped with a rare earth emitting element, at least one garnet host phosphor doped with chromium and optionally one or more photon emitting rare earth elements, at least one garnet host phosphor doped with iron and optionally one or more photon emitting rare earth elements, yttrium gallium garnet, yttrium aluminum garnet, or a combination thereof.