Researchers have designed a new LED-based train headlight that uses a tenth of the energy required for headlights using conventional light sources. If operated 8 hours every day, the electricity ...

“DPR is Wavien's Dual Parabolic Reflector system, which uses two off-axis paraboloid surfaces facing each other and a net effect of imaging a real life or digital generated object and relocates the ...

Jay Holben The next in line on our examination of lighting fixtures is the PAR, which is an acronym for Parabolic Aluminum Reflector. The classic PAR is a reflector and lamp all in one. It is a sealed ...

Could you explain how the headlamp is directed, its scatter and the ability or style of light to pierce the dark? I drive on hill-and-dale county roads and have experienced many times "high-beams" ...

WASHINGTON -- Researchers have designed a new LED-based train headlight that uses a tenth of the energy required for headlights using conventional light sources. If operated 8 hours every day, the ...