Sep 302009

We have been getting some interest in LED Lighting recently. LED is a new technology that is finding its way into more lighting products. LED lighting has many good features, but for now efficiency is not one of them. For example TCP has just released a LED lamp. This TCP bulb is one of the best LED I’ve seen, but it only puts out 35 Lumens per Watt. Whereas a Compact Fluorescent will put out 55 lpw, a Standard T8 lamp will pump out 75 lpw, and a high performance T8 lamp almost 100 Lumens per Watt!

LEDs do have many advantages.

  1. Although 35 lpw is not much compared to a fluorescent it is an improvement over incandescent bulbs. A 2.6 watt LED replaces a 15 watt incandescent.
  2. The LED bulb last a long time (25,000 hours) so it is a good application where maintenance is difficult like a chandelier
  3. The LEDs are directional, this makes for a good spot lighting, but a poor area lighting.
  4. The LED is vibration resistant. They work well in ceiling fans. Our TCP brand LED lamps are outdoor rated and work well in cold locations.
  5. The TCP LEDs are dimmable and look pretty good with a CRI of 80. They look much better than some LEDs, which have weird color casts.

If you’re interested in what technologies are currently hot check out “Lighting’s Workhorses” by Jim Benya in Architectural Lighting. Pay special attention to the graph. It shows which lamp technologies are efficient and which are not. Effective Concepts has a good selection of all the lighting listed in the article: Tungsten, Halogen, Metal Halide, Ceramic Metal Halide, Fluorescent (Cold Cathode, PLs, Biax, Induction, T8, T5s, etc), and even LED lamps.