| 摘要 |
<p>PURPOSE: A lighting device with a dimming effect is provided to naturally implement the change of light by dimming the brightness of an LED using a charging and discharging function. CONSTITUTION: A pulse generator(10) generates a basic pulse with a constant cycle. A divider(20) divides a basic pulse cycle with even multiplication. A CR attenuator(30) performs a charging or discharging operation according to a voltage of a pulse wave. A driver(40) drives the LED according to charging and discharging voltages. A light image projector emits light with various colors by receiving light from a plurality of LEDs(50).</p> |
