GO GREEN / LEED Consulting

LED (Light -Emitting Diode) is a light source discovered in the early 20th century by way of semiconducter materials.  There are many advantages using LED lights, such as:   Longer Life, Slow Failure, Energy Efficient (uses less energy), Toxicity, Size, Cool Light, Cycling, Shock Resistant, Color, Off/On Time,  and much more.  

Facts/Advantages

• LED lights can save anywhere from 30-50% in electricity usage.
• LEDs have an estimated 35,000-50,000 hours of useful, longer life, whereas fluorescent light bulbs have a useful life less than half of that!
• LED lights slowly burn out opposed to a sudden burn-out.
• LED bulbs emit more light per watt compared to incandescent lights.
• There is NO mercury in LED lights!
• LED lights can come in many sizes because they are made from circuit board.
• LED bulbs produce less heat compared to standard bulbs in most cases.
• Because of such a long life, LED lights are perfect for frequent on/off cycles, whereas fluorescent bulbs burn out much more frequently.
• As mentioned, LED bulbs are solid and therefore industrial and challenging to break, whereas LEDs competition is frail and simple to destroy.
• LEDs can change color easily and do not need other harmful substances like their competitiors do.
• LED lights can light up in microseconds.
• LED bulbs can be dimmed very easily.
• White LED lamps are beginning to make its way into cars.

LED lights are used for many different reasons such as:  

• Light bulbs;
• Large video display (like in Times Square, NYC);
• Grow lights;
• Strobe lights;
• Street lights;
• Exit signs;
• Traffic lights;
• Automobiles;
• Sterilization;
• and the most economical, Machine Vision Systems (i.e., barcode scanners)

There are, however, a few disadvantages with LED lights, such as:  Price, Temperature Dependency, Light Quality, Blue Hazard and Blue Pollution potential.

Facts/Disadvantages

• Currently LED lights are more expensive because of the low lumen output, power supplies and drive circuits required, HOWEVER, they last so much longer and save so much power and cost LED bulbs more than pays for themself.  An Example is in the post Go Green = Save Money Tip #4.
• High ambient temperatures could potentially lead to overheating the LED unit, which potentially causes device failure.
• Older White and Blue LED lights could potentially differ people’s perception of colors in objects.
• White and Blue lights are capable of surpassing the safety limits of lights.
• It is best NOT to purchase white and blue LED lights but BUY other LED lights or state of the art white and blue LED lights.

The majority of this information came from Wikepedia.  To learn more, go to http://en.wikipedia.org/wiki/LED#Advantages_of_using_LEDs

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