Backlighting system with a multi-reflection light injection syst

Details Backlighting system with a multi-reflection light injection syst Backlighting system with a multi-reflection light injection syst

1993-04-19

1994-10-25

Ullah, Akm E.

Optical waveguides

Noncyclindrical or nonplanar shaped waveguide

362 32, G02B 604

Patent

active

053596919

ABSTRACT:
An assembly for backlighting a liquid crystal flat panel display or other such arrangement requiring backlighting is disclosed herein. The assembly is composed of a multi-reflection light injection system, a light pipe and a set of specifically configured microprisms which, cooperating with the light pipe, provides an efficient backlighting technique with a controllable degree of collimation. The disclosed assembly may employ up to four light sources to give a brighter backlighting.

REFERENCES:
patent: 4917465 (1990-04-01), Conner et al.
patent: 5050946 (1991-09-01), Hathaway et al.
patent: 5187765 (1993-02-01), Muehlemann et al.
patent: 5202950 (1993-04-01), Arego et al.
patent: 5226105 (1993-07-01), Myers

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