Incandescent reflector lamps. fluorescent magnetic, mercury vapor and probe-start metal halide ballasts—they’ve had a good run, but now it’s time to gracefully retire them. Their competitors are simply too efficient.
It wasn’t long ago that light-emitting diodes (LEDs) were used primarily in very specific applications, such as indicator lights and exit signs. The deployment of white LEDs for general illumination applications always seemed in sight but out of reach.