| 摘要 |
PROBLEM TO BE SOLVED: To provide a light emitter which has stable light emission property by putting the mixture ratio of light surely and easily in desired balance. SOLUTION: This light emitter is equipped with a light emitting element 11 which emits the primary light of first wavelength, and a first phosphor 17 which absorbs the primary light and emits the secondary light of second wavelength, a second phosphor 18 which absorbs the secondary light of the second wavelength and emits the secondary light of the third wavelength. Then, the second phosphor 18 stabilizes the balance of an obtained light spectrum by being constituted as one which is low in absorptivity to the first wavelength and substantially does not converts the wavelength, and even if the wavelength of the primary light emitted from the light emitting element or the intensity change, the obtained light spectrum does not change. |
