发明申请
US20090237795A1 Anti-Counterfeit Hologram 有权
防伪全息图

  • 专利标题: Anti-Counterfeit Hologram
  • 专利标题(中): 防伪全息图
  • 申请号: US12303475
    申请日: 2007-06-12
  • 公开(公告)号: US20090237795A1
    公开(公告)日: 2009-09-24
  • 发明人: Pekka KoivukunnasHarri Kosonen
  • 申请人: Pekka KoivukunnasHarri Kosonen
  • 申请人地址: FI Helsinki
  • 专利权人: AVANTONE OY
  • 当前专利权人: AVANTONE OY
  • 当前专利权人地址: FI Helsinki
  • 优先权: FI20065407 20060614
  • 国际申请: PCT/FI2007/050349 WO 20070612
  • 主分类号: G02B5/18
  • IPC分类号: G02B5/18 B29D7/01
Anti-Counterfeit Hologram
摘要:
A microstructure area (201) providing a first diffractive visual effect is produced on the surface layer (240) of a paper or cardboard substrate (230) of a product (200). In addition, a bulge (206) or a recess (207) having a second microstructure area (202) is produced on the surface layer (240), wherein a doubly curved portion (203) is located between the first (201) and the second (202) microstructure areas. Said combination of the bulge (206)/recess (207), microstructure areas (201, 202) and doubly curved portion (203) makes counterfeiting of the product (200) difficult and provides a special visual effect.
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