| 摘要 |
PROBLEM TO BE SOLVED: To provide an illumination system and illumination equipment that can broaden the toning range.SOLUTION: An illumination system 1A has a first light emission element array LEDG1 to which one or more first light emission elements are connected in series, a second light emission element array LEDG2 which is connected to the first light emission element array LEDG1 in parallel and to which one or more second light emission elements are connected in series, a constant current source 30 for supplying constant current to a light source part 20A having the first light emission array LEDG1 and the second light emission element array LEDG2, a resistance element Rd1 which is connected to the first light emission element array LEDG1 in series and detects the magnitude of current flowing in at least the first light emission element array LEDG1, a bypass circuit for making at least a part of current flowing in the second light emission element array LEDG2 to the resistance element Rd1, and current adjusting circuit 10A for adjusting the magnitude of current flowing in the first light emission element array LEDG1 dependently on the magnitude of the current detected in the resistance element Rd1.SELECTED DRAWING: Figure 4 |
