Hologram Viewing Arrangement and Alignment Device
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United States of America Patent
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N/A
Issued Date -
Oct 15, 2009
app pub date -
Dec 12, 2006
filing date -
Dec 13, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present invention relates to a hologram viewing arrangement, to an alignment device, to a display device, to a device for aligning first and second members and to a device for aligning an optical beam with a desired target. A hologram viewing arrangement comprising a pixellated phase mask substrate (20) and a pixellated hologram display substrate (40), wherein the hologram display substrate is arranged to store data representing at least two distinct images (3a-3d), the arrangement being such that disposing the phase mask in a first position with respect to the display substrate enables one of the at least two images to be visible and disposing the phase mask in a second position with respect to the display substrate enables another of the at least two images to be visible.
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