LIGHTING CONTROL SYSTEM

PROBLEM TO BE SOLVED: To provide a lighting control system which suppresses light and dark in a boundary in a luminaire group forming one group from a plurality of luminaires. SOLUTION: Light receiving elements 17a1 to 17a3 are provided to one of the luminaires 12a4 to 12a6 on the side adjacent to either one of adjacent luminaire groups 13a, 13b and then the degree of dimming and identification signals for the luminaire group which are communicated by visual light by the light receiving elements are detected. Dimming control terminals 14a, 14b which are respectively provided to the luminaire groups output the dimming signals of the same degree to respective luminaires in the same group as well as outputting dimming degree control signals for varying the dimming degree for the adjacent luminaire to match the dimming degree for the adjacent luminaire group when a difference which is a prescribed value or more than own dimming degree exists in the dimming degree for the adjacent luminaire group detected by the light receiving elements. COPYRIGHT: (C)2010,JPO&INPIT