Surface illuminating apparatus
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United States of America Patent
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-
Aug 22, 1989
Grant Date -
N/A
app pub date -
Oct 19, 1988
filing date -
Oct 20, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A surface illuminating apparatus in which a plurality of transparent plates of different spot patterns formed of a large number of fine spots painted or printed at one side are layered in the relation that spotted surfaces having the painted or printed spots are not opposite to each other, thereby forming a surface illuminating body, a reflecting plate is brought into close contact with the spotted surface of the rearmost transparent plate, in turn, the rear surface of the body, a light diffusion plate in close contact with a non-spotted surface of the foremost transparent plate, in turn, the surface of the body, and light sources for irradiating light on the body are disposed at both lateral end sides of the body.
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Cited Art Landscape
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