| abstract |
When a phosphor layer formed of a small-gap phosphor plate is used, color irregularity of illumination light emitted from a light-emitting device is reduced. The light-emitting device ( 100 ) which emits laser light (L 1 ) as part of illumination light includes a semiconductor laser ( 10 a to 10 c ) which emits the laser light (L 1 ), which is visible light, a phosphor layer ( 1 a ) formed of a small-gap phosphor plate which emits a fluorescence (L 2 ) upon reception of the laser light (L 1 ) emitted from the semiconductor laser ( 10 a to 10 c ), and an excitation light distribution control unit ( 1 b ) which controls light distribution of the laser light (L 1 ) and guides the laser light (L 1 ) to inside of the phosphor layer ( 1 a ). The small-gap phosphor plate is a phosphor plate in which a gap that is present inside has a width equal to or longer than 0 nm and equal to or shorter than one tenths of a wavelength of the laser light (L 1 ). |