发明申请
- 专利标题: IDENTIFICATION MEDIUM, METHOD FOR READING DATA THEREFROM, APPARATUS FOR IDENTIFICATION, AND METHOD AND APPARATUS FOR PRODUCTION THEREOF
- 专利标题(中): 识别介质,用于读取数据的方法,用于识别的装置及其生产方法和装置
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申请号: US13807182申请日: 2011-06-29
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公开(公告)号: US20130099000A1公开(公告)日: 2013-04-25
- 发明人: Hidekazu Hoshino , Itsuo Takeuchi , Tokio Sakauchi , Tohru Ida
- 申请人: Hidekazu Hoshino , Itsuo Takeuchi , Tokio Sakauchi , Tohru Ida
- 申请人地址: JP Yokohama-shi, Kanagawa
- 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, Kanagawa
- 优先权: JP2010-152321 20100702; JP2010-249422 20101108
- 国际申请: PCT/JP2011/064924 WO 20110629
- 主分类号: G06K19/06
- IPC分类号: G06K19/06 ; G06K7/10
摘要:
A technique detects counterfeit products having appearances similar to authentic products with high accuracy. A cholesteric liquid crystal layer in which hologram is processed and circularly polarized light of primary rotating direction having specific central wavelength can be selectively reflected and a code forming layer in which code printed pattern that is an objective of reading is formed, are arranged in this order seen from a side from which reading is performed. The hologram image that inhibits reading of information of the code while an optical reading device reads it together with the code, and it is formed by the hologram processing.