发明申请
- 专利标题: Discriminating medium, method of discriminating the medium, article to be discriminated, and discriminating device
- 专利标题(中): 歧视媒介,识别媒体的方法,待辨别的物品和辨别装置
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申请号: US10576965申请日: 2004-10-27
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公开(公告)号: US20070037290A1公开(公告)日: 2007-02-15
- 发明人: Hidekazu Hoshino , Itsuo Takeuchi , Tokio Sakauchi , Susumu Oaku
- 申请人: Hidekazu Hoshino , Itsuo Takeuchi , Tokio Sakauchi , Susumu Oaku
- 申请人地址: JP Yokohama-shi 236-0004
- 专利权人: NHK SPRING CO., LTD.
- 当前专利权人: NHK SPRING CO., LTD.
- 当前专利权人地址: JP Yokohama-shi 236-0004
- 优先权: JP2003-368035 20031028
- 国际申请: PCT/JP04/15898 WO 20041027
- 主分类号: G01N21/00
- IPC分类号: G01N21/00
摘要:
A discrimination medium cannot be easily falsified. Since the visibility of the discrimination medium is unique, the discrimination medium is superior in determination of the authenticity. The discrimination medium is structured such that a cholesteric liquid crystal layer 106 and a multilayer film 103 having plural light transparent films which are laminated and are different from each other in refraction index are laminated. The reflection light reflected by the discrimination medium includes circular polarization lights which are different in polarization direction, and the discrimination medium has unique optical characteristics. A discrimination method using the above unique optical characteristics, an article to be discriminated by the discrimination medium, and a discrimination apparatus using the above unique optical characteristics are provided.