Patent ID: 8088304

Claim:
A phosphor having a garnet structure, which is one of the formulae II to IV: (Y 1-x-y Ce x Sb y ) 3 Al 5 O 12 where 0.005≦x≦0.1 and 0.001≦y≦0.005 (II) (Y 1-x-y Ce x Bi y ) 3 Al 5 O 12 where 0.005≦x≦0.1 and 0.001≦y≦0.005 (III) (Y 1-x-y Ce x Th y ) 3 Al 5 O 12 where 0.005≦x≦0.1 and 0.001≦y≦0.005 (IV).