Researchers in Saudi Arabia have demonstrated white light emission from a phosphor-less LED. Generally, ‘white’ LEDs have a blue-emitting die topped with phosphors that convert some of that blue to ...

White LED bulbs are commonplace in households by now, mostly due to their low power usage and high reliability. Crank up the light output enough and you do however get high temperatures and ...

Up until 1990, the standard headlight assembly contained only incandescent sources, mostly separate, to create all desired functions. Whether the functions were created by sealed beam lamps or bulb, ...