Authenticity proving optical structure, authenticating proof recording medium and authenticity certifying method
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United States of America Patent
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Feb 8, 2011
Grant Date -
Oct 21, 2004
app pub date -
Oct 9, 2002
filing date -
Oct 11, 2001
priority date (Note) -
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Abstract
have a plurality of minute areas A and B storing depth information representing multiple-valued phase information about Fourier transformation images obtained through the Fourier transformation of different original images, respectively.
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