Linear backlighting system and method

Details Linear backlighting system and method Linear backlighting system and method

1992-04-03

1994-01-04

Rosenberger, Richard A.

Optics: measuring and testing

By configuration comparison

With photosensitive film or plate

356446, 362 31, 362 32, 362246, 362253, G01B 1102, F21V 704

Patent

active

052765040

ABSTRACT:
A linear lighting system includes a rod made of a material such as glass surrounded by an outer layer of cladding of lower refractive index than the glass. The rod is ground flat on one side to produce a flat rough surface with the texture oriented transverse to the longitudinal axis of the rod. Light from a light source enters the rod at one end of the rod. As the light propagates down the rod, it is scattered by the rough flat surface. Some of the scattered light strikes the rounded surface at an angle which allows it to pass through the cladding and escape the rod, thus producing uniform linear lighting emitted from the round side of the rod.

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