Anti-glare filter
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United States of America Patent
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-
Oct 6, 1987
Grant Date -
N/A
app pub date -
Apr 23, 1985
filing date -
Apr 23, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A filter for reducing the glare of a viewing screen caused by ambient light is comprised of a substantially transparent sheet of material having first and second faces. The first face is substantially planar while the second face has a plurality of V-shaped grooves, each groove being formed by two walls. The geometry of the V-shaped grooves is such that ambient light enters the filter and becomes trapped therein due to internal reflection.
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Cited Art Landscape
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