고효율 LED 조명기기의 특성 및 건물 조명 응용

Since a LED light source does not include the mercury (Hg) or a filament, it is expected as an environmentally friendly next generation light source with its good reliability and long lifetime. A few ten mW white LED can substitute for the indicator light source, and it is required to study several watt multi-chip semiconductor light sources in order to replace the light sources for general illumination such as incandescent lights and fluorescent lamps. The light sources for illumination have a variety of applications in the indoor and outdoor, and the variation of optical power and color rendition of the light source limits their applications. Therefore, it is necessary to research the LED lamp and its lumina ire to minimize the variation of dynamic characteristics due to that illuminating environment.