SECURITY ELEMENT COMPRISING A VOLUME HOLOGRAM
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United States of America Patent
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Issued Date -
Mar 17, 2016
app pub date -
Apr 10, 2014
filing date -
Apr 26, 2013
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Abstract
The present invention relates to a security element (20) to be built into an item, particularly a document (10), said security element comprising a holographic layer, enabling a volume hologram to be generated, and a non-holographic variable opacity structure generated by the presence of: a) one or more cutout(s) and/or at least partially translucent areas and moreover at least partially opaque area(s); and/or b) oriented platelet pigments. The variable opacity structure is at least partially placed over the hologram within a region of the security element observable in transmitted light.
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