Stereoscopic projector
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United States of America Patent
Stats
-
Jun 16, 1992
Issued Date -
N/A
app pub date -
Dec 12, 1990
filing date -
Dec 14, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A stereoscopic projector includes a condenser member for leading a beam from a lamp to advance in parallel, an infrared ray filter for removing heat component in the beam from the condenser system, a polarizing beam splitter for splitting an incident beam into two beams, a liquid crystal display panel or a slide film for obtaining image signals, and a reflective mirror for converting the beam path a field lens and a projection lens, whereby the projector prevents the keystoning phenomenon, since the light utilizing efficiency is high, the power loss is reduced, and the infrared filter removes the thermal line from the beam so that the separate cooling system is not required.
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Family
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Cited Art Landscape
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