COMPACT HOLOGRAHIC HUMAN-MACHINE INTERFACE
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United States of America Patent
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Issued Date -
Oct 13, 2011
app pub date -
Jan 7, 2011
filing date -
Jan 7, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method of recording an object image of a first hologram as a second hologram is provided. A first hologram is recorded at a first angle of reconstruction and a holographic recording medium is provided. An object beam is directed through the first hologram at the first angle of reconstruction to reconstruct the object image on the recording medium. The recording medium is struck with a reference beam at a second angle of reconstruction to form a wave interference pattern with the object beam. The second angle of reconstruction is between 45 and 90 degrees. The wave interference pattern is recorded. A switch is provided that includes a hologram that has an angle of reconstruction between 45 and 90 degrees. A reproducing light source is positioned to direct light through the hologram at the angle of reconstruction to form a holographic image at a predetermined distance from the hologram. The switch includes a detector that detects the presence of an object proximate to the holographic image. The axis of the detector beam source is not perpendicular to the plane of the medium to which its hologram is affixed.
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