Interactive display system having a digital micromirror imaging device
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United States of America Patent
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Apr 11, 2006
Grant Date -
Mar 3, 2005
app pub date -
Aug 28, 2003
filing date -
Aug 28, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A display system includes a waveguide optical panel having an inlet face and an opposite outlet face. A projector cooperates with a digital imaging device, e.g. a digital micromirror imaging device, for projecting an image through the panel for display on the outlet face. The imaging device includes an array of mirrors tiltable between opposite display and divert positions. The display positions reflect an image light beam from the projector through the panel for display on the outlet face. The divert positions divert the image light beam away from the panel, and are additionally used for reflecting a probe light beam through the panel toward the outlet face. Covering a spot on the panel, e.g. with a finger, reflects the probe light beam back through the panel toward the inlet face for detection thereat and providing interactive capability.
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