Oblon, McClelland, Maier & Neustadt, L.L.P.
Information recording medium and authenticity determination method
An information recording medium according to one embodiment includes a substrate, a first image, and a second image. The first image is provided on the substrate, emits light when irradiated with first excitation light having a first wavelength, and includes phase-modulated first information. The second image is provided on the substrate, emits light when irradiated with second excitation light having a second wavelength different from the first wavelength, and includes phase-modulated second information.
Toshiba Infrastructure Systems & Solutions Corporation Kabushiki Kaisha Toshiba
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G06V B42D G06Q B42D B42D B42D B42D G07D G06K B42D G07D B42D G07D B42D G06K B42D
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Shota Fumitoshi Takahisa Nobuki
Kure Morimoto Nakano Nemoto