| 摘要 |
<P>PROBLEM TO BE SOLVED: To produce a desirable white-light lighting fixture with the use of LEDs in a chromaticity range positioned outside an area of MacAdam ellipse 3step from target color temperature on a blackbody locus which is to be an appropriate illumination color, since purchased LEDs generally have color unevenness of the MacAdam ellipse 3step or more with the distribution center rarely on a blackbody locus, and if LEDs are selected to be a white module on the blackbody locus regulated by JIS, much remainder is produced. <P>SOLUTION: In the light-emitting device 100, a given color temperature on a blackbody locus of a chromaticity diagram is to be a target chromaticity. The light-emitting device 100 is provided with an LED module with four LEDs mounted having a chromaticity point of 130 in a chromaticity range beyond the MacAdam ellipse 3step defined against a target chromaticity of 120, and with a synthetic color of light-emitting color of each LED having nearly the same chromaticity as the target chromaticity of 120. <P>COPYRIGHT: (C)2013,JPO&INPIT |
