Patent ID: 7321191

Claim:
A blue-green light emitting system, comprising a semiconductor light emitter; and a luminescent material, wherein said illumination system has an emission having CIE color coordinates located within an area of a pentagon on a CIE chromaticity diagram, whose corners have the following CIE color coordinates: e) x=0.0137 and y=0.4831; b) x=0.2240 and y=0.3890; c) x=0.2800 and y=0.4500; g) x=0.2879 and y=0.5196; and h) x=0.0108 and y=0.7220. wherein said luminescent material comprises two or more phosphor compositions selected from the group consisting of: (Ba,Sr,Ca) 5 (PO 4 ) 3 (Cl,F,Br,OH):Eu 2+ ; (Ba,Sr,Ca)MgAl 10 O 17 :Eu 2+ ; (Ba,Sr,Ca)BPO 5 :Eu 2+ ; (Sr,Ca) 10 (PO 4 ) 6 *nB 2 O 3 :Eu 2+ where n>0; 2SrO*0.84P 2 O 5 *0.16B 2 O 3 :Eu 2+ ; Sr 2 Si 3 O 8 *2SrCl 2 :Eu 2+ ; Ba 3 MgSi 2 O 8 :Eu 2+ ; Sr 4 Al 14 O 25 :Eu 2+ ; BaAl 8 O 13 :Eu 2+ ; (Ba,Sr,Ca)Al 2−x Si x O 4−x N x :Eu 2+ where x≦2; (Ba,Sr,Ca) 2 SiO 4 :Eu 2+ ; (Sr,Ca,Ba)(Al,Ga,In) 2 S 4 :Eu 2+ ,Ce 3+ ; (Ca,Sr) 8 (Mg,Zn)(SiO 4 ) 4 Cl 2 :Eu 2+ ; (Y,Lu,Gd,Tb,Sc) 2 (Ca,Mg) 1−r (Mg,Zn) 2+r Si z−q Ge q O 12+δ :Ce where r≦1 and z,q,δ≧0; (Y,Gd,Tb,La,Sm,Pr,Lu) 3 (Al,Ga) 5 O 12 :Ce 3+ ; Sr—SiON:Eu 2+ ,Ce 3+ ; MSi 3 N 5 , M 2 Si 4 N 7 , M 4 Si 6 N 11 , M 9 Si 11 N 23 , M 16 Si 15 O 6 N 32 , MSiAl 2 O 3 N 2 , M 13 Si 18 Al 12 O 18 N 36 , MSi 5 Al 2 ON 9 and M 3 Si 5 AlON 10 where M can be a divalent cation or a trivalent cation doped with Eu 2+ and/or Ce 3+ ; and (Mg,Ca,Sr,Ba) p Si q Al r O x N y , where 1≦p≦16; 0≦q<30; 0≦r<15, 0≦x<20 and 0<y<40 doped with Eu 2+ and/or Ce + .