Light Pipe

Transparent matter that usually is drawn into a cylindrical, pyramidical or conical shape through which Light is channeled from one end to the other by total internal reflections. Optical fibers are examples of light pipes. Optical fibers intended for light transport need to propagate as much light as possible within the core; in contrast, optical fibers intended for light distribution are designed to let part of the light leak through their cladding.

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