LED Lamp Sets Efficiency Record

A prototype 4.75-inch parabolic aluminized reflector (12cm; PAR-38) lamp using light-emitting diodes (LEDs) has shattered the efficacy record for reflector lamps by delivering 659 lumens using just 5.8 watts of electricity—for an efficacy of 113.6 lumens per watt. The lamp was made by LED Lighting Fixtures (LLF), whose LR6 recessed downlight was recognized by BuildingGreen as a 2007 Top-10 Green Building Product (see

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