Aug 22, 2012 Lighting Design & Controls
I wanted to post a brief article on LED area site lighting to give an idea of where the concept is at and where it seems to be going. Currently, parking areas and outdoor site lighting is performed mostly with HID lighting. Both Metal Halide and High Pressure Sodium lamps are used. With trying to get average and minimum foot candles for projects, you get a variation in foot candles that can cause areas of too much light, areas with shadowing and even light spillage/trespass. Lighting designer engineers and manufacturer’s have done a good job with HID lighting but have pretty much hit the point where there is not more room for improvement due to the fixture and reflectors can’t get much more efficient with the light distribution.
This is where the power of LED’s comes into play. Sure it’s more energy efficient, but it’s in the ability to control the angle and direction of each LED in the array of an LED fixture that gives the major benefit. Why so? By controlling the angle, the variation of foot candles can be much lower overall than traditional methods and you can then base the lighting levels based on minimums instead the average. With LED site lighting you will get less shadowing, trespass, conserve light, and probably use less fixtures. The color rendering is better as well which is great for security.
The major players that seem to be emerging are Beta, GE, and Kim. Be on the lookout over the next 3 to 4 years in the industrial electrical products market to see more breakthroughs in LED site lighting!
The original is here: Industrial Electrical Productions