DISCRIMINATING MEDIUM, METHOD OF DISCRIMINATING TH

专利名称：DISCRIMINATING MEDIUM, METHOD OF

DISCRIMINATING THE MEDIUM, ARTICLETO BE DISCRIMINATED ANDDISCRIMINATING DEVICE

发明人：HOSHINO, HIDEKAZU,TAKEUCHI,

ITSUO,SAKAUCHI, TOKIO,OAKU, SUSUMU

申请号：EP04793010申请日：20041027公开号：EP1684098A4公开日：20080910

摘要：A discrimination medium cannot be easily falsified. Since the visibility of thediscrimination medium is unique, the discrimination medium is superior in determinationof the authenticity. The discrimination medium is structured such that a cholesteric liquidcrystal layer 106 and a multilayer film 103 having plural light transparent films which arelaminated and are different from each other in refraction index are laminated. Thereflection light reflected by the discrimination medium includes circular polarizationlights which are different in polarization direction, and the discrimination medium hasunique optical characteristics. A discrimination method using the above unique opticalcharacteristics, an article to be discriminated by the discrimination medium, and adiscrimination apparatus using the above unique optical characteristics are provided.

申请人：NHK SPRING CO., LTD.

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