Application prospect of white LED lighting

In order to explain the characteristics of white LED, first look at the current situation of the use of light source. Incandescent lamp and halogen tungsten lamp, the light effect of 12 ~ 24 lumens / watt, fluorescent lamp and HID lamp light effect of 50 ~ 120 lumens / watt. The white LED: in 1998, light white LED is only 5 LM / W, in 1999 has reached 15 LM / W, this index is similar to general household incandescent lamps, and in 2000, light efficiency of white LED has reached 25 LM / W, the index and the tungsten halogen lamp is similar. The company predicted that by 2005, the LED luminous efficiency of up to 50 LM / W, such as 1W white light kvidi opto electronics production has reached 60 LM / W, by 2015, the optical efficiency of LED is expected to reach 150 to 200 LM / W. At that time, the working current of the white LED was up to the ampere level. It can be seen that the development of white LED writers with lighting light source, will become a reality.

Incandescent lamps and halogen lamps for general lighting purposes although cheap, but the low light efficiency (wasted power consumption thermal effect lamp), short service life, maintenance workload, but if using white LED for lighting, not only high light efficiency, and long service life (more than 100000 hours of continuous work), almost no maintenance. At present, the German company HELla LED developed using white light aircraft reading a street lamp; the Australian capital Canberra has used the white LED lighting lamp; city traffic management in China is also white LED to replace the early order of traffic lights. It can be predicted that in the near future, white LED will enter the family to replace the existing lighting.

LED light source with the use of low-voltage power supply, low energy consumption, strong applicability, high stability, fast response time, no pollution to environment, color light etc., although the price is compared with the existing lighting equipment is expensive, it will inevitably replace the existing lighting device.