Patent ID: 6844671

Claim:
A phosphor blend comprising a first phosphor and at least a second phosphor; said first phosphor comprising Sr 2 P 2 O 7 :Eu 2+ ,Mn 2+ ; wherein strontium is partially substituted by at least one element selected from the group consisting of Ba, Zn, Ca, and Mg; said at least second phosphor being selected from the group consisting of Sr 4 Al 14 O 25 :Eu 2+ ; (Ba, Sr, Ca)MgAl 10 O 17 :Eu 2+ ; (Ba, Sr, Ca)MgAl 10 O 17 :Eu 2+ ,Mn 2+ ; (Sr, Ba, Ca, Mg) 5 (PO 4 ) 3 Cl:Eu 2+ ; and 3.5 MgO.0.5MgF 2 .GeO 2 :Mn 4+ ; and said phosphor blend being capable of absorbing electromagnetic radiation having a wavelength in a range from about 315 nm to about 480 nm and emitting light having a wavelength in a visible spectrum.