Method for creating a diffractive optical effect on a target surface and a transfer foil of a diffractive optical element
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United States of America Patent
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Nov 12, 2013
Grant Date -
May 31, 2012
app pub date -
May 31, 2010
filing date -
Jun 3, 2009
priority date (Note) -
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Abstract
Method of creating a copied fine structure producing a diffractive optical effect onto the target surface, includes using a transfer foil manufactured from thermoplastic, on the surface of which is first created an original fine structure producing a diffractive optical effect; placing the transfer foil on the target surface with the original fine structure is in contact with the target surface; heating the transfer foil to a temperature close to the glass transition temperature of the material of the transfer foil; simultaneously during the heating or immediately after the heating lightly pressing the transfer foil against the target surface, whereby material from the transfer foil adheres to the target surface; and removing the transfer foil from the target surface, whereby the adhered material makes up a copied fine structure, which is a mirror image of the original fine structure of the transfer foil.
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