Low cost concentrated light LEDs
It is quite clear that until now, LEDs are unbeatable when compared to normal light bulbs. A one-watt LED has the same light output as a hundred-watt light bulb.
Researchers from the Fraunhofer Institute for Production Technology IPT in Aachen have discovered a way to massively increase the efficiency of LEDs. This can be done by using special lenses which direct the light to the place it is needed. The lenses are made by using an injection-molding technique. This process requires a high degree of accuracy, of just a few microns.
The lenses can be manufactured in relatively large batches and experts claim that they can’t be found anywhere else in Europe. All the steps needed for manufacturing were developed by researchers at IPT.
May 20th, 2008 at 8:13 pm
My household incandescent lamps do not have lenses, their light output is fairly even through nearly 300 degrees of a sphere. Lenses that focus LED light are for NEW situations that are able to use only focused outputs. More, aside from flashlights, I can’t think of where I’d need the light output of a hundred-watt bulb to be focused into a smaller cone of illumination.
August 12th, 2009 at 4:10 am
i think LED is good,but it’s too expensive than general light bulb,and it could make more heat