Uniformly thin, high efficiency large area lighting panel with t

Details Uniformly thin, high efficiency large area lighting panel with t Uniformly thin, high efficiency large area lighting panel with t

1994-02-22

1996-01-16

Sikes, William L.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

362 26, 362 31, 385901, G02F 11335, G01D 1128, F21V 704

Patent

active

054852919

ABSTRACT:
A lighting panel providing uniform illumination is described. The panel includes a transparent light guide which has a faceted grooved major surface and a parallel planar surface. The lighting panel introduces light into one end of the light guide. The facets facing the light source are inclined so that they reflect the incident light primarily along the light guide to be reflected from the opposite end. The facet facing away from the light source is inclined to reflect light out through the planar major surface.

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