External aperturing for digital micromirror devices
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United States of America Patent
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May 16, 2006
Grant Date -
Feb 16, 2006
app pub date -
Aug 13, 2004
filing date -
Aug 13, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A digital micromirror device arrangement and devices using the arrangement are disclosed. The arrangement includes a digital micromirror device (DMD) having an active area, a cover plate disposed substantially adjacent to the DMD and having a thickness and a light blocking area having an aperture formed therein. The active area is adapted to receive incoming light and to reflect the incoming light as outgoing light. The light-blocking layer is offset from a plane of the active area by at least the thickness of the cover plate and is adapted to block light from passing therethrough. The aperture is dimensioned to produce a beam of outgoing light having desired dimensions.
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