| 摘要 |
PROBLEM TO BE SOLVED: To provide a white light-emitting device that has excellent uniformity of a spatial color hue and excellent luminous efficiency.SOLUTION: The white light-emitting device is configured as follows. A blue phosphor, a green phosphor, and an orange phosphor are excited by using radiation light of a semiconductor light-emitting element having a main luminescence-peak wavelength of 400-440 nm. The white light mainly composed of the radiation light of the phosphors is made as output light of the white light-emitting device. The white light is configured such that a wavelength, in which a spectrum strength becomes maximum in a region on the long-wavelength side longer than 515 nm, is in a range of 535-600 nm while a spectrum strength in a range of a wavelength of 570-600 nm is equal to or more than a half of the maximum spectrum strength in the region on the long-wavelength side longer than 515 nm. |
