| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a lighting system capable of decreasing the influence of external light such as daylight at a low cost. SOLUTION: This lighting system is composed of an illumination load part 3, an illuminance sensor part 1 for sensing reflected light from a floor surface, and a control part 2 for controlling the light output of a lamp 10 provided in the illumination load part 3 in response to the sense output of the illuminance sensor part 1. The system performs feedback control such that the illuminance on the floor surface becomes generally uniform, that is, the sense output of the illuminance sensor becomes generally uniform, and increases the light output of the lamp 10 when the sense output of the illuminance sensor part 1 exceeds a predetermined value.</p> |
