Stereoscopic exit pupil expander display
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United States of America Patent
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Jun 18, 2013
Grant Date -
Sep 16, 2010
app pub date -
Jun 2, 2006
filing date -
Jun 2, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
The specification and drawings present a new apparatus and method for providing a stereoscopic display in electronic devices with a diffractive exit pupil expander using sequentially switching between right and left images of one display (e.g., microdisplay). An optical delivery system can provide a sequential left and right image of the display and the illumination is then switched for left and right accordingly using exit pupil expander (EPE) with asymmetric, e.g., highly slanted, in-coupling gratings, sending light practically to only one direction (e.g., one area of the EPE substrate).
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