发明申请
- 专利标题: Anti-Counterfeit Hologram
- 专利标题(中): 防伪全息图
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申请号: US12303475申请日: 2007-06-12
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公开(公告)号: US20090237795A1公开(公告)日: 2009-09-24
- 发明人: Pekka Koivukunnas , Harri Kosonen
- 申请人: Pekka Koivukunnas , Harri 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
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.
公开/授权文献
- US08105677B2 Anti-counterfeit hologram 公开/授权日:2012-01-31
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