Case for overhead projection display panel
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United States of America Patent
Stats
-
Aug 9, 1994
Grant Date -
N/A
app pub date -
Jan 6, 1993
filing date -
Jan 6, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention includes a case (54) for an overhead projection display panel (50) used with an overhead projector light source (52). The case supports a light modulating element (60) such as, for example, a liquid crystal device, and encases modulation control circuitry (32) for controlling the light modulating element. The case includes an annular case element (56) for supporting the light modulating element along its side margin so that it can modulate light transmitted from the overhead projector light source. The case also includes an occluding panel (58) connected to and extendable from the annular case element for selectably occluding a portion of the overhead projector light source. At least one of the annular case elements and the occluding panel encasing the modulation control circuitry of the display panel.
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