Nice to see more solid data on LED efficacy

Interesting blog post on one of the industry publication websites. They have some nice data on efficacy (power to light conversion efficiency) of several white LEDs used in light fixtures. Remember the efficiency numbers stated don't include power loss in the power conversion circuitry (in fluorescents, this circuitry is called the ballast) nor the losses due to the optical system (lenses, reflectors, etc). It's interesting anyway.