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What are LED Lamps?

10/8/2013 4:34:06 PM | by Anonymous

Lamps: Led

LED lamps are lightings or any other light that uses light emitting diodes as the main source of illumination. Most lighting typically comes from a fluorescent or incandescent light bulb. Despite them being different from traditional bulbs, most LED bulbs that are available can be put into traditional lamps and used like most other light bulbs. Moreover, they are much more efficient than fluorescent or incandescent options.


Light emitting diodes are semi conductor devices that convert electricity to light using the movement of electrons. They were invented in the 1920s back in Russia and were placed to practical uses in the United States in the 1960s by the General Electric. In the late 1960s, Monsanto Corporation was the first to mass produce LEDs and Hewlett Packard started using them in their early calculators.


The main difference from LED lamps to other lights is that they are used for both general and special purpose lightings. When coloured light is needed, LEDs inherently emit single coloured light that requires no energy absorbing filters. LED lamps are generally compact and give flexibility in designing lighting fixtures and control over the light distribution through small reflectors. Due to their size, control of the distribution of illumination is also extremely flexible. The light output and spatial distribution can also be controlled with no efficiency loss.


LEDs use the colour mixing principle to emit a huge range of colours. This is done by changing the proportions of light generated in each colour. This allows full colour mixing in lamps of different colours. LED emission also tends to be directional. This can act as either an advantage or disadvantage depending on the requirements. For applications where non-directional light is required, either a diffuser or multiple individual LED emitters will be used to emit in different directions.


There are many consumer advantages of using LEDs instead of fluorescent and incandescent light bulbs. LED lights also consume lesser energy. They are 300% more efficient than compact fluorescent lights and 1000% more efficient than incandescent lights. They have a very long lifespan of about 50000 hours of use at 70% of their original power. This works out to be eight hours a day for as long as thirteen years at 70% power. A typical 60-watt incandescent may only last for about 1000 hours.


Additionally, LED lamps does not contain any mercury or other types of toxins. The bulbs emit no ultra violet light which do not attract any bugs. The smaller bulbs do not generate much heat either and are cool to the touch. On top of that, they do not generate radio frequency waves either. This means that they do not interfere with radios or television broadcasts at all. They are also more resistant to vibrations and shocks.


Along with advantages also have their disadvantages too. LEDs are generally more costly than traditional bulbs. They are extremely heat sensitive which means that if they are not used with a consistent and steady current. It will cause them to stop working and fade quicker. These lights are also most commonly used for directional lighting rather than room lighting although some changes in design will allow improvement to the LED lights.


LEDs are small and are often used in watches, clocks and as indicator lights in cars. They are good in remote controls and lights that are turned on and off frequently due to their fast switching ability. Their directional nature also suggests that they are best used in stairways, hallways, under kitchen counters, landscape lighting, night lights and reading lamps.


LED lights come in many forms and include screw in light bulbs, strips, cluster or flashlights. They are relatively simple to install as like any other type of lighting and can be found in normal light shop where consumers purchase other lights and bulbs.

 

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