Patent ID: 7122952

Claim:
A UV-emitting phosphor blend comprising a mixture of at least two UVA-emitting phosphors selected from SrB 4 O 7 :Eu, YPO 4 :Ce, and BaSi 2 O 5 :Pb, the mixture of UVA-emitting phosphors comprising 0 to 50 wt. % SrB 4 O 7 :Eu, 0 to 40 wt. % YPO 4 :Ce, and 30 to 70 wt. % BaSi 2 O 5 :Pb, the sum of the weight percentages of the phosphors in the mixture equaling 100%, the phosphor blend additionally containing an optional amount of a UVB-emitting phosphor having a range from 0 to 12 wt. % of the mixture.