AUTHENTICITY JUDGING MEDIUM, ARTICLE HAVING IT, LABEL OF AUTHENTICITY JUDGING MEDIUM, TRANSFER SHEET OF AUTHENTICITY JUDGING MEDIUM AND TRANSFER FOIL OF AUTHENTICITY JUDGING MEDIUM

摘要

PPROBLEM TO BE SOLVED: To provide an authenticity judging means which enables easy judgment as to a forgery, falsification or the like and moreover can not be easily forged. PSOLUTION: The authenticity judging medium has a first light selective reflection layer having the light reflectivity of reflecting either a left circularly polarized light or a right circularly polarized light out of incident light, a phase difference layer and also a second light selective reflection layer having the light reflectivity of reflecting either the left circularly polarized light or the right circularly polarized light out of the incident light. A fragile part is provided between the first and second light selective reflection layers so as to peel them off. PCOPYRIGHT: (C)2007,JPO&INPIT