Two panel optical engine for projection applications
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United States of America Patent
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Mar 7, 2006
Grant Date -
Aug 5, 2004
app pub date -
Nov 3, 2003
filing date -
Nov 5, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Optical engines using a reduced number of components offer advantages over more complex optical systems. Three panel optical engines have offered the advantage of relatively high throughput but at the cost of complexity and increased components on the bill of materials. Conventional two-panel engines have required the use of complex retarder structures to achieve the dual polarizations state for the three primary colors. The present invention achieves this goal while using simpler optical retarders.
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