s are supposed to be one of the most energy efficient lights as they convert almost 80 percent of electrical energy into light energy if designed properly. Ever since its discovery in 1962 LED s are used in enormous applications. LED lights are becoming favorites in consumer and industrial applications. The operational lifetime of an LED is about 100,000 hours that means about 11 years. The main advantage of LED that makes people to choose it other than other lights is its efficient power consumption. We get an increased brightness with a much reduced cost. Let see some of the advantages of LEDs which makes them favorites.
Efficiency and size
LEDs are small in size that is they measure from 3 to 8mm long and they can be used as an individual unit or as the part of an array. This reduced size helps the uses of LED s in areas where other lights cannot be used. The holder or the part containing LED can be designed without considering the LED size. LEDs are highly directional and they deliver light only in a specified direction. By this the loss of energy is minimized. The other conversional light sources give light in all directions.
LEDs are known for their long battery life. It is estimated that an LED has a battery life of 35000 to 50000 years compared to an incandescent tube which has just 8000 to 10000 years. By these figures itself we know the reason why LED is preferred over others. This is the average life time that means the number of hours taken for an LED to decrease its brightness to 70 percent of the initial brightness.
Low temperature dissipation
The main reason for the decrease of average life time of other light sources is the amount of heat they dissipate. In confessional light sources say a bulb, the electrical energy is converted into heat energy and light energy and there will be loss. On the other hand when considering LEDs, they remain cool and don't waste much energy. As LED s doesn't contain any glass part they can be installed in areas prone to vibrations or sports places.
LED lights are designed such that they will fit perfectly in the sockets made for halogen or Xenon bulbs. For this reason we don't have to buy a new socket or redesign for installing LEDs.
LEDs can undoubtedly be called as the technology of the future. But designing of LED s should be taken into consideration as the poorly designed LEDs may not give all the above advantages. A good LED should provide a stable output for its projected life time. The LEDs should rapidly be turned on and off, there should not be any flicker. LEDs are used in a number of places such as in vehicle head lights, street lights and so on.
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