The new materials of the warm white LED lamp

As we all know, the led street light are energy efficient, longer life, but the LED is light blue LED lights, hindering its popularity in the field of indoor lighting wholesale. Today, warm white LED lights have been developed say scientists at the University of Georgia in the United States is the world's first single phosphor and a single light-emitting unit. This paper describes this material was published in the latest issue of Optical Science and Nature Publishing Group journals.

The lead author of the paper, Lin Zhengwei Pan, associate professor in the University of Georgia, said: "At present, the white LED light flash and auto headlights light blue light they emit is not very flattering, especially in indoor lighting field. Material to obtain a warm color temperature, while at the same time to achieve a realistic color reproduction. Earlier LED lights to improve the use of a single phosphor failed to achieve this effect. "Poon Jing Wei said, there are two indicators to measure the quality artificial light. The correlated color temperature is used to measure the well-being of light.

Indoor lighting, ideal color temperature below 4000K (Kelvin) temperature and correlated color temperature higher than 5000K, the light will glow blue light-emitting like white filament led street lights. Another important indicator is the reproduction is able to simulate the color of the light of the natural light. Restore more than 80 is ideal for indoor lighting, color below this value will be distortion.