Rear projection screen
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United States of America Patent
Stats
-
Jun 26, 1990
Grant Date -
N/A
app pub date -
Mar 8, 1989
filing date -
Sep 28, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A transparent rear-light projection screen with V-shaped grooves is described, where the rear side of the screen, i.e. the side turned towards the projector is supplied with outwardly extending, elongate parallel lenses, the focal point of which is congruent with the front plane of the screen which is made up of outwardly extending elongate projections on whose tops the light can emit, and where--between the tops of the projections--there are grooves which are covered with material impenetrable to light, such as black color, for the purpose of increasing the contrast.
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Family
International Classification(s)
Cited Art Landscape
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