| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a light-emitting device that can improve higher luminous efficiency, while maintaining high color rendering properties and can emit light so that a color temperature of 2,850 to 5,000 K and an average color rendering index of 80 or higher are obtained. <P>SOLUTION: A light-emitting device comprises a light-emitting element that emits blue light and a phosphor layer. The phosphor layer includes at least a red phosphor that is excited by the blue light emitted by the light-emitting element and emits light having a light-emitting peak in a wavelength range of 640 to 660 nm and a green phosphor that is excited by the blue light and emits green light, and emits light so that a mixture of the light and the blue light has a color temperature of 2,850 to 5,000 K and an average color rendering index of 80 or higher. <P>COPYRIGHT: (C)2009,JPO&INPIT |
