LED - Light-emitting diode - Wikipedia, the free encyclopedia

LED is a technology that is based on light emitting diode. The LED lights are becoming increasingly popular because they save energy and last long. LED bulbs are not very convenient for usage at homes. LED fixtures are convenient for industrial usage because of their resistance to vibrations and corrosion. In the future, there will be more applications related to LED technology because of the increased popularity of green technologies. 

LED lamp 

http://en.wikipedia.org/wiki/Light-emitting_diode