...AND CHEAPER...:

Philips has cut the amount of power of its overhead LED tube light in half, a sign of continuing improvements in LED lighting geared at displacing incumbent technologies.

The company says it has built a prototype of a tubular overhead LED light that produces 200 lumens of light with a watt of power. Its current products produce light at 100 lumens per watt, about the same as florescent tube lights. Even though the price of LEDs will be higher, Philips thinks that they can start to displace more of the florescent tube lights that are everywhere from office buildings to parking garages based on energy savings.

The company plans to commercialize the technology in 2015 and transfer it to other products, including consumer light bulbs. In a consumer LED light bulb, that would mean that a 60-watt replacement would consume about 5 watts. "You could easily see how it will work through the entire retrofit line," says  Coen Liedenbaum, the innovation area manager in lighting at Philips Lighting. 

Follow @brothersjudd