As the new 4th generation light source, LED lighting technology started to take place of traditional light sources, causing huge revolutions in the lighting industry. This new light source is constantly upgrading as a result of innovations in drivers. From incandescent lights to energy-saving lights, from halogen lamps to LED lamps, light sources have been not only improved in the energy-saving aspect, but also enhanced comfort. As the representative of green light sources, LED lighting technology has potentials to dominate the market. Compared with other mature traditional light sources, what makes LED more advanced?
In 1923, American scientists Rosoff (O.W.Lossew) discovered that silicon PN junctions have properties of electrical conductivity and luminescence. In 1955, R.J.Haynes published a research report about properties of gemanium PN junctions. And meanwhile, G. A. Wolff shared his study on the luminous phenomenon of GaP (gallium phoshpide). In 1968, Monsanto Company and HP produced a red LED for the first time, enabling LED Panel Light become a kind of electronic products to enter the market.
Energy saving: LED spectrum almost all concentrated in the visible range. The luminous efficiency can reach up to 80%-90%. Compared with incandescent bulbs, spiral energy-saving lamps and T5 trichromatic fluorescent tubes: the luminous efficiency of incandescent lights is around 12lm/W, can work for 2000 hours; the luminous efficiency of spiral energy-saving lamps is 60lm/W, and can work for 8000 hours; T5 fluorescent tubes have a relatively high luminous efficiency: 96lm/W, and can work for 10,000 hours; The luminous efficiency of LED tubes with diameters of 5mm is within the range of 20-28lm/W, but can work for more than 100,000 hours. Someone even predicted that the maximum LED lifetime in the future will be infinite.
It is believed that energy-saving lamps saving 4/5 energy is a great invention. LED can save 1/4 more energy than energy-saving lamp does. In addition, LED lighting technology has other advantages: pure light spectrum/good-quality rays, free of radiations, environmental friendly, reliable, durable, very low cost on maintenance and replacement, etc.. Thank you for the above advantages, it is estimated that LED lighting applications will dominate the market within 10 years.
LED usually operate under low voltage input, 1.4V-3V; normal working current is 10mA. During the production process, LED needs no mercury and inflation, good at impact resistance and shock resistance, easy to transport, safe and very environmental friendly.