Apparatus and method for increasing resolution and expanding the displayed field of view
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United States of America Patent
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Mar 5, 1996
Grant Date -
N/A
app pub date -
Jul 13, 1994
filing date -
Jul 13, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An apparatus and method for increasing resolution and expanding the displayed field of view. The imagery is collimated and split into two paths by a partially reflective mirror set at an oblique angle to the image source. Either path may be blocked by a combination of polarizers and at least one controllable polarization shifting cell(s) (.pi.-cells). This mechanism allows one image source to supply, in alternating sequence, separate imagery to two separate but contiguous portions of a wide angle display. The two collimated image paths are merged about the viewing axis by a one way mirror before being recollimated at the device exit pupil.
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