Method and apparatus for configuration and assembly of a video projection light management system
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United States of America Patent
Stats
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Feb 14, 2006
Grant Date -
Apr 3, 2003
app pub date -
Jul 24, 2002
filing date -
Sep 12, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A pathlength matched prism assembly is constructed from Polarizing Beam Splitter optical components having varying degrees of precision by arranging them in pathlength matched positions and fixing them to a baseplate or frame. Gaps between the optical components are sealed by the frame or adhesive sealant. Planar optical elements are inserted between the optical components and space between the components and elements is filled with an optical coupling fluid having an index of refraction that closely matches the index of refraction of both components and elements. An expansion compensation device is attached to the prism assembly to compensate of expansion and contraction of the optical coupling fluid. The prism assembly is best suited for use in HDTV and High Definition video projectors.
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Cited Art Landscape
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