Highly efficient projection system and color scrolling method therefor
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United States of America Patent
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Mar 14, 2006
Grant Date -
Jun 17, 2004
app pub date -
Sep 3, 2003
filing date -
Sep 4, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A highly efficient projection system and a color scrolling method are provided. In the color scrolling method, first, an optical splitter splits a beam emitted from a light source into individual color beams. Next, a rectangular light valve is disposed such that its long axis is along the direction into which the optical splitter splits the beam. Thereafter, the individual color beams are scrolled in the long axial direction of the light valve. The color scrolling in the long axial direction can increase light efficiency much more than a color scrolling performed in a short axial direction.
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