Illuminating device

摘要

An illuminating device comprising a plurality of semiconductor light-emitting devices differing in emission color and employing a semiconductor light-emitting element and a phosphor, wherein outputted light is stably combined, separation of light is inhibited, and color tone is variable, and which devices emit light outward on the basis of an emission from the semiconductor light-emitting element and from the phosphor which is excited by emission from the semiconductor light-emitting element to fluoresce or on the basis of emission from the phosphor which is so excited to fluoresce, the deviation duv of which from a blackbody radiation locus being within a range of −0.02≦duv≦0.02, in the uv chromaticity diagram according to UCS (u,v) color system (CIE 1960), and outputted lights from the light-emitting part in which the plurality of kinds of the semiconductor light-emitting devices are integrated and arranged, are mixed together and emitted outward.

主权项

1. An illuminating device comprising:
three or more solid-state light-emitting devices, each of which comprises a semiconductor light-emitting element and a phosphor, and emits a primary light on the basis of an emission from the semiconductor light-emitting element and an emission from the phosphor which is excited by said emission from the semiconductor light-emitting element to fluoresce, or on the basis of an emission from the phosphor which is excited by an emission from the semiconductor light-emitting element to fluoresce; and an emission intensity control part which controls electric power to be supplied to each of the three or more solid-state light-emitting devices and thereby controls a color of a synthesized light which is synthesized from the primary lights emitted by the three or more solid-state light-emitting devices, wherein the three or more solid-state light-emitting devices each have an emission color, the deviation duv of which from a blackbody radiation locus being within a range of −0.02≦duv≦0.02, in the uv chromaticity diagram according to USC (u,v) color system (CIE 1960), and the emission intensity control part controls each of the three or more solid-state light-emitting devices to regulate the color of the synthesized light so as to result in a chromaticity point, which is located on straight lines connecting a plurality of chromaticity points respectively corresponding to the emission colors of the lights from the three or more solid-state light-emitting devices, or which is located within a polygon formed by the straight lines.