| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a lighting system capable of reducing a power loss and eliminating user's time and labor required for setting a set value. SOLUTION: This lighting system is provided with a light source 50, an illuminance detection part 20 detecting illuminance in the surroundings, an illumination control means 40 which controls optical output of the light source 50 in a first lighting mode when an illuminance value L in the surroundings exceeds a first mode setting illuminance value and controls optical output of the light source 50 in a second lighting mode when the illuminance value L in the surroundings drops below a second mode starting illuminance value, and an illuminance setting compensation means 62 which compensates the second mode starting illuminance value based on the illuminance value L in the surroundings during the first lighting mode.</p> |
