COUNTERFEIT PREVENTING STRUCTURE, COUNTERFEIT PREVENTING MEDIUM, AND COUNTERFEIT PREVENTING STRUCTURE INSPECTING METHOD
In order to perform high-accuracy authentication of a forgery prevention medium having a forgery prevention structure, a forgery prevention structure provided on a medium for performing authentication of the medium includes: an anisotropic resonator of which a transmissivity obtained when irradiated...
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Main Author | |
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Format | Patent |
Language | English French German |
Published |
29.07.2020
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Subjects | |
Online Access | Get full text |
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Summary: | In order to perform high-accuracy authentication of a forgery prevention medium having a forgery prevention structure, a forgery prevention structure provided on a medium for performing authentication of the medium includes: an anisotropic resonator of which a transmissivity obtained when irradiated with a terahertz electromagnetic wave having a frequency at which the anisotropic resonator resonates, changes depending on a polarization direction of the terahertz electromagnetic wave; and an isotropic resonator of which a transmissivity obtained when irradiated with a terahertz electromagnetic wave having a frequency at which the isotropic resonator resonates, does not change depending on a polarization direction of the terahertz electromagnetic wave. |
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Bibliography: | Application Number: EP20180859456 |