What's an LED?

When we talk about illumination, what springs to mind? From the pure white brightness of the kitchen lighting to the twinkling fairy on a Christmas tree to the cosy glow of a bedside lamp the different kinds of colorful lamps are as varied in appearance as they are in function . But they all have one thing in common, the source of the light itself . When referring to light bulbs there are actually two main kinds, incandescence bulbs and fluorescent lamps. Now, however, things are changing.

Invented in the 1960s, LED's are really starting to come into their own as scientists researched and developed new-model LED's for illumination. These kinds of bulbs are highly-efficient with a long –life of upto 100,000 hours, which is 100 times longer than the common incandescent bulb.

LED's make use of semi-conductors and can therefore be very small indeed, even down to just several millimeters, and can be installed on walls and ceilings, when they are switched off you don't even notice they are there, in addition, it's unnecessary to use lamp-shades to avoid glare, unlike common incandescent bulbs. What's more due to their extraordinary long-life, the need to change bulbs after you install them is practically done away with. Who knows, we may even will forget how to change bulbs one day .

Besides durability, LED's are also energy-friendly and environmentally-friendly . According to recent authoritative studies, if over 50% of America's bulbs are LED based, then 24 power stations could be shut down saving several billion US dollars, while, at the same time, leading to a decrease in damaging CO 2 emissions, if one third of china's current illumination needs are catered for by led's, china's electricity will be superfluous and the nation's environmental situation will be greatly improved. With a long-term strategy in mind, the government plans to renovate the current illumination within ten years.

All in laa, led's have the following characteristics:

1、Lighting efficiency increased largely

Incandescent bulb's lighting efficiency is 12mcd/w-140mcd/w, fluorescent lamp's is 90mcd/w-140mcd/w, sodium lamp's is 90mcd/w-140mcd/w, and most of the electronic energy is turned into heat energy. But LED's lighting efficiency can be 50mcd/w-200mcd/w after meliorating, and the light's homochromy is very excellent white the action spectrum is narrow, can emit light with different colors.

2、Energy-saving

Led's power is 0.03w-0.06w, DC drive, the voltage is 1.5v-3.5v, the current is 15mm-18mm; LED's response speed is very quick, can operate on high-frequent conditions. In the same illumination conditions and effects, LED's energy use is one eigth of incandescent bulb's and half that of the fluorescent lamp's.

3、Long-life

LED's cubage is very small and the weight is very light, and encapsulated with colophony, so it can endure impact, and not frangible; LED's average life is about 100,000 hours, then lights' maintenance fee can be reduced largely .

4、Safety and reliability

Low heat, no hot radiation , cold lamp-house , soft light and color , no glare , does not include Hg , sodium and the other elements which harm our health .

5、Environmental Protection

LED's are all solid-encapsulated illuminants and have a very strong ability to resist execrable factors outside. They are also recycled reducing pollution.

There is no doubt, the use of LED's will lead to a revolution in illumination!