Patent ID: 8384092

Claim:
A light emitting device, comprising: a light emitting element; a red phosphor formed from a nitride phosphor, the red phosphor emitting light when excited by the light from the light emitting element; a green phosphor formed from a halosilicate, the green phosphor emitting light when excited by the light from the light emitting element; and a YAG phosphor emitting light when excited by the light from the light emitting element; wherein the emission spectrum thereof has a first peak at a wavelength between 440 nm and 470 nm, a second peak at a wavelength between 510 nm and 550 nm and a third peak at a wavelength between 630 nm and 670 nm, and the minimum relative light emission intensity between the second peak wavelength and the third peak wavelength is greater than 80% of whichever the lower of the relative light emission intensity of the second peak wavelength and the relative light emission intensity of the third peak wavelength; wherein the wavelength of the first peak is attributed to the light from the light emitting element; wherein the red phosphor is activated with Eu and is represented by the following general formula (I): M 1 w Al x Si y B z N ((2/3)w+x+(4/3)y+z) :Eu 2+ (I) wherein M 1 is at least one kind of element selected from the group consisting of Mg, Ca, Sr and Ba, and relations: w=1, x=1, y=1 and 0≦z≦0.5 are satisfied; wherein the green phosphor is represented by the following general formula (II) or (III): (M 2 1-y Eu y ) a MgM 3 b O (a+2b) X 2 (II) wherein M 2 is at least one kind of element selected from the group consisting of Ca, Sr, Ba, Zn and Mn, M 3 is Si, X is Cl, and relations: 0.001≦y≦0.3, 7.0≦a<10.0, and 3.0≦b<5.0 are satisfied, M 5 x Eu y MgSi z O a X b (III) wherein M 5 is at least one kind of element selected from the group consisting of Ca, Sr, Ba, Zn and Mn, X is Cl, and relations: 6.5≦x<8.0, 0.01≦y≦2.0, 3.7≦z≦4.3, a=x+y+1+2z−b/2, and 1.0≦b≦1.9 are satisfied, and light emitted from the light emitting device has mean color rendering index Ra of 85 or more.