Patent ID: 8471283

Claim:
A light emitting device, comprising: a laser diode for emitting a laser light having a peak wave length of 360 nm to 420 nm; and a phosphor layer for being excited by the laser light and emitting blue, green, and red lights, wherein said phosphor constituting the phosphor layer for emitting the green light has at least one composition expressed by general formulas: (Ba 1-x ,Eu x )(Mg 1-y ,Mn y )Al 10 O 17 wherein x and y respectively satisfy the relations 0.05<x<0.5; and 0.1<y<0.6; (Sr 2-x-y-z-ω ,Ba x Mg y ,Mn z ,Eu ω )SiO 4 wherein x, y, z and ω respectively satisfy the relations 0.05<x<1, 0.05<y<0.2, 0.002<z<0.009, 0.03<ω<0.3; ZnS:Au x ,Al y wherein x and y respectively satisfy the relations 0.0002≦x≦0.015, 0.0001≦y≦0.0012; (Sr 1-x-y ,Ca x ,Eu y )Ga 2 S 4 wherein x and y respectively satisfy the relations x<0.2, 0.05<y<0.3; and (Sr 3-x ,Eu x )Si y Al z O v N ω wherein x, y, z, v and ω respectively satisfy the relations x<0.2, 12<y<14, 2<z<4, 1<v<3, 20<ω<22.