White LED Light-Emitting Semiconductor Efficient Computing

The semi-conductor light source gets in to the illuminate realm to be thought to another time leap after the incandescent lamp and fluorescent lamp. Because of the high efficiency, economizes on energy, environmental protection, the long using life, high speed responding and easily bearing a vibration etc, the semi-conductor light replacing traditional incandescent lamp and fluorescent lamp is an irresistible general trend in the world, just like transistor acting for electronics tube. The white-LED as one type of illuminate light sources, the parameter luminous efficacy is the main focus that we pay attention to. According the theories of luminescence, chroma and spectrology, we do some calculations about the white-LED's luminous efficiency. At another hand, we do some experiments corresponding to the calculations, and analyze the results of both of the calculations and the correlative experiments. The calculations in this paper are all about the phosphor-conversion method that producing white-LED.