Hand holding a hand-built multi-row LED retrofit lamp module on…

A hand holds a custom-built LED lamp module on a workbench — a clear/smoked lens housing packed with roughly four rows of individual white LEDs, retrofitted in place of a bulb. The bench behind is littered with plastic shavings, an adjustable wrench, wrenches, a caulk tube and an "LED flash light" box.

AI caption January 2010 · Photo 483 of 1150