| 摘要 |
PROBLEM TO BE SOLVED: To provide a light emitting device compatible in a high flux of light and high color rendering properties, especially emitting a white light of warm color system. SOLUTION: The light emitting device comprises a phosphor layer 3 including a nitride phosphor and a light emitting element 1, the light emitting element has an emission peak in a wavelength region of 360 nm or more and less than 500 nm, the nitride phosphor is excited to emit light by a light emitted by the light emitting element 1, it includes a luminescence component emitted by the nitride phosphor as an output light, and the nitride phosphor is activated by Eu<SP>2+</SP>and a phosphor expressed by an empirical formula (M<SB>1-x</SB>E<SB>ux</SB>)AlSiN<SB>3</SB>, where M is at least one element selected from Mg, Ca, Sr, Ba and Zn, and x is a numerical value satisfying 0.005≤x≤0.3. COPYRIGHT: (C)2006,JPO&NCIPI |
