Hologram
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United States of America Patent
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Issued Date -
Aug 7, 2014
app pub date -
Aug 31, 2012
filing date -
Sep 2, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A substrate includes a diffracting structure providing a hologram (20, 6). The diffracting structure encodes a holographic image so that thatholographic image is produced in response to reference light being incident on a major surface of the substrate at an angle of incidence with respect to the said major surface of the substrate, wherein the angle of incidence is no more than 20°.
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