| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a low-cost and small lighting system facilitating fine adjustments of hue. SOLUTION: The lighting system is provided with a plurality of switches SW1, SW2, and SW3 for controlling currents flowing in a plurality of LEDs L1, L2, and L3 to turn the LEDs on and off. The ratio of the on time to off time of each switch is made variable using a personal computer U1 whereby illumination with the required hue can be provided.</p> |
