Patent ID: 8242528

Claim:
A conversion LED, comprising: a primary light source which emits in the short-wave radiation range below 420 nm, and a luminophore placed in front of it consisting of the BAM system as a host lattice for at least partial conversion of the light source's radiation into longer-wave radiation, wherein the BAM luminophore is applied as a thin layer having a thickness of at most 50 μm directly on the surface of the light source, the BAM luminophore having the general stoichiometry (M 1−r Mg r )O*k(Al2O3), where r=0.4 to 0.6 and M=EA e Eu 1−e , with EA=Ba, Sr, Ca, and e=0.52 to 0.8, and k=1.5 to 4.5.