Surface illuminating apparatus
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United States of America Patent
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-
Dec 27, 1994
Grant Date -
N/A
app pub date -
Oct 1, 1993
filing date -
Oct 8, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A surface illuminating apparatus, which is provided with a transparent light guide plate 2, a reflecting plate 4 layered onto the rear surface of the light guide plate 2, and a light diffusion plate 6 layered onto the outer surface of plate 2. The light guide plate 2 and the reflecting plate 4 have an irregularly reflecting plate 3 therebetween. Light sources 8 are disposed at both lateral ends of the light guide plate 2, and formed on the outer surface of plate 2 is a light diffusion plate 6 having a plurality of spotted projections 7 regularly disposed and having a light condensing and diffusing function.
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