Who Brings Us LED ？

Published:2011/6/16 2:23:00 Author:Phyllis From:SeekIC

LEDs are known by many people as they emit more light, produce less heat and use less electricity. They are used in many applications from flash light to nifty LED TVs today. Today, let’s talk about how does the LED come and who invented it. As LEDs are swing by the local hardware shop for a light bulb upgrade but unknown to many consumers and they have revolutionized and will continue to revolutionize the world in an unimaginable and amazing way.

LED is a semiconductor used for producing light without the help of a filament. Being different from its energy-draining predecessors, LED is touted as earth-friendly alternatives to fluorescent and incandescent lighting since they are energy-efficient and environment friendly. Although it retails higher than traditional lighting fixture, LED advocates much longer lifespan than ordinary light bulbs and greater savings for the average consumer in the long run.

Electroluminescence was first discovered in the early 20th century, but advancements in the study and application of electroluminescence didn’t appear until the second half of the 20 th century. The first LED is said to be created by a Russian scientist named Oleg Vladimirovich Losev in 1927. The first LED patent was filed in 1961 by Robert Biard and Gard Pittman, American experimenters who were working at Texas Instruments. Just like other evolving technologies, there is no single individual that can be credited for the development and discovery of LED.

As a great alternative lighting method, LED is quickly accepted by consumers and will become the mainstream soon. With LED one can save money and protect the environment while incurring less maintenance costs. Once for a long time, the compact fluorescent lights (CFL) was people’s first choice to be used as energy-saving lights to replace those traditional lights. However, there are some disadvantages about CFL lights that have been discovered by people, one of the flaws is that they contain mercury which is poisonous. And leakages happen easily because the lights are fragile. The improper dispose of CFL lights can also problematic.

Compared with the old incandescent bulbs, CFL bulbs are considerably more energy efficient, LED bulbs out-class them both in energy-efficiency and lifespan. LED lights are 30-50% more efficient and a five times longer life than CFLs. The related model is MAC15D.

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