Uniformly thin, high efficiency large area lighting panel with two facet grooves that are spaced apart and have light source facing facets with smaller slopes than the facets facing away from the light source
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United States of America Patent
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-
Jan 16, 1996
Grant Date -
N/A
app pub date -
Feb 22, 1994
filing date -
Feb 22, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
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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Family
International Classification(s)
Cited Art Landscape
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