Holographic optical devices
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United States of America Patent
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Jun 17, 2003
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N/A
app pub date -
Dec 15, 2000
filing date -
Apr 2, 1998
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Abstract
The invention provides a holographic optical device, including a light-transmissive substrate; a first holographic optical element carried by the substrate; at least one second holographic optical element carried by the substrate laterally of the first holographic optical element, and at least one third holographic optical element carried by the substrate laterally displaced from the first and second holographic optical elements; wherein the center of at least one of the first, second or third holographic optical elements is located outside a single, straight line.
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