Patent ID: 7679277

Claim:
A light emitting device comprising: a light emitting element having an emission peak wavelength of 350 nm-420 nm; and a phosphor absorbing light from said light emitting element and emitting fluorescence having a different emission peak wavelength, said phosphor being formed of a semiconductor material that allows an emission peak wavelength to be controlled by transition across a bandgap and being configured with at least four fluorescences having different emission peak wavelengths, wherein at least one of the emission peak wavelengths of said plurality of phosphors is selected in a range of 440 nm-480 nm, wherein at least one of the emission peak wavelengths of said plurality of phosphors is selected in a range of 500 nm-540 nm, wherein at least two of the emission peak wavelengths of said plurality of phosphors are selected in a range of 540 nm-560 nm and a range of 600 nm-680 nm, or a range of 570 nm-610 nm and a range of 610 nm-650 nm.