| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an illumination device that is capable of a variety of illumination control by changing the shifting time between the dimming levels. SOLUTION: The illumination device comprises an illumination load 1, an dimming setting part 12 that sets the dimming ratio of the illumination load, a dimmer lighting device 5 that energizes the illumination load based on the dimming ratio, and a control part 11 that changes, according to cosine characteristic, the shifting time for shifting to the changed dimming condition in accordance with at least one of the change level of the dimming ratio or the dimming ratio before the change, when the dimming ratio is changed.</p> |
