2011年1月25日 星期二

What's an LED Light Made Of

What's an LED Light Made Of?

An LED or light emitting diode is an optoelectronic device, which can emit light when it is properly biased. The early light emitting diodes used to emit a light beam of rather low intensity, but the modern ones make up for this set back by proper illumination or emission of light. The light emitted by modern LED's are in numerous wavelengths, and hence they offer a wide range of colors for us to choose from.As the winter intensifies, lights stay on for more hours, and led downlight energy bills increase. That makes now a great time to invest in TESS LED bulbs and take advantage of the energy and expense savings the bulbs offer, whether for a home,In addition to LED lighting products, Chicony Power also has power supply LED bulb orders from US-based game console vendors and is currently contributing 36% of the Chicony Group's revenues with chance to be listed on Taiwan The main advantages of LED's are their limited power consumption and very high efficiency. They are pretty robust, rugged and tough enough to withstand mechanical shocks given to them,After the success of a pilot inflatable seat project to light up the city's streets with the latest LED technology, the civic bosses now want to install LED lights across Kolkata they have a very quick switching response and they are very compact.

A light emitting diode is almost similar in construction to a p-n diode; the light emitting diode is made of a semi-conducting material such as silicon or germanium, which is doped with p-type and n-type impurities in order to get a p-n formation. The LED usually consists of the following parts, an epoxy lens or case to cover the semi conducting material, wire bonds, reflective cavity, semi conductor die and anvil post which is also known as the lead frame.

When a potential is applied to this device a current flows through the junction resulting due to the recombination of the holes and electrons, the recombination results in the release of energy in the form of light photons.

The production of the LED's actually began with red and infrared devices,The new articles are designed to assist promotional towels outdoor furniture owners in getting the most out of their outdoor and patio furniture without having to buy new furniture every year or pay a professional cleaning service. which contained gallium arsenide.After assuming power, the Trinamool board decided to take up pool table covers a pilot project by converting the streetlights at Kalighat temple, SN Banerjee Road (near KMC headquarters), New Park Street and Syed Amir Ali Avenue. Now many ranges of colors are available when we look for a particular type of LED. Advancements in material science and physics have lead to the manufacture of LED's with wavelengths shorter then ever.

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