And white light LED technology

Paradoxical LED emits monochromatic light, the color light illumination apparatus with, as compared with most conventional light sources, because of its high power efficiency, that a better color light. However, with the LED light source instead of the traditional, you must determine the white LED should achieve the necessary level of efficiency and quality. Due to radiation blue - green spectral components of GaN LED unprecedented progress, white lamps have great prospects. There are two ways to achieve white light serial oled:
One is to separate the radiation of red, green, and blue light LED hybrid (known as RGB); another band fluorescent radiation is radiation GaN blue combination, it can become part of the blue light-wave radiation, and with The remaining blue light and emits white light combination. Whether the first or second method may be obtained with two colors of white light component; has three color components of the color quality can be obtained (Ra 80-90), for a process using the phosphor techniques using two different components, as well as the middle of the program.
Theoretically RGB method is more effective, but requires auxiliary optical devices, resulting in reduced efficiency and increased system costs. The problem with phosphor simple, it is the efficiency of the phosphor, which may become a RGB series. However, these two processes is the main difference between the technologies, RGB method can "mix color", then the phosphor is stability. With different phosphors, RGB France in the lighting field has opened up new possibilities. From the white LED light efficiency growth prospects of view, LED using the phosphor at near 2005 Good results can be achieved, luminous efficiency of 50lm / w, we can predict that the white mini lcd module lamp is used for today and halogen in place.