ILLUMINATION SOURCE, ILLUMINATION SYSTEM, AND DIMMING CONTROL METHOD FOR THE PRODUCTION OF DIFFERENT COLOUR TEMPERATURES

摘要

An illumination source 1 is capable of outputting illumination light at different color temperatures, by adjustment of luminous intensity ratios of light emitting devices 3-6, where each of the light emitting devices emits light in a corresponding one of at least four colors, the at least four colors including a first red and a second red that is different from the first red. Accordingly, the illumination source 1 is capable of outputting illumination light at an incandescent lamp color, a neutral white color, and a daylight color, and exhibiting favorable color rendering characteristics for all the three colors.