Apparatus for the display of illuminated translucent documents
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United States of America Patent
Stats
-
Mar 14, 1989
Grant Date -
N/A
app pub date -
Apr 13, 1987
filing date -
Apr 18, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device for a front lit illuminated panel for the directional illuminated of a display surface having at least one luminous source emitting a light flux which penetrates into a plate of transparent material and exits after encountering striations whose depth increases as a viewer observing the display moves away from the light source lighting the field of the plate. The individual striations are distributed along lines parallel to the lighted field of the plate, while being spaced from one another on each line. The length of the increased striations along their respective lines increase and the space along the same line, between individual striations, decrease as a viewer observing the display moves away from the light source.
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International Classification(s)
Cited Art Landscape
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