LEDs are collectively referred to as light emitting diodes in academia. As the name suggests, LED is a semiconductor material that can emit light when current passes through.
Electroluminescence was discovered by H.J. round of Marconi laboratory in 1907, and Oleg Vladimirovich losev invented a practical LED material.
In 1962, led was first put into commercial use – first used in the display of electronic watches, and later used in more and more places. Now, LED is the unsung hero of our electronic world. They do a lot of work and are used in all kinds of places. In addition, LEDs constitute the numbers in the electronic watch, transmit information for the remote control, illuminate watches and mobile phones, decorate your Christmas tree and tell you that your appliances are working. When LEDs gather together, they can also form the image of TV or traffic lights on the road.
In the past period of time, people have also developed a variety of LED shapes, power, colors and brightness levels. Lighting level LED can also meet the requirements of ordinary lighting in brightness, energy efficiency, life, color temperature and white spot stability. Therefore, LED is also widely used in general lighting facilities, including roads, parking lots and indoor lighting equipment. Moreover, led based lamps also reduce users’ equipment maintenance costs (compared with traditional lamps, LED has a longer service life) and reduce energy consumption.
In addition, all EU countries and the European Free Trade Association will completely ban the use of incandescent lamps in 2011.
Editor in charge: Tzh