Chiral liquid crystal polymer marking
    3.
    发明授权
    Chiral liquid crystal polymer marking 有权
    手性液晶聚合物标记

    公开(公告)号:US08426012B2

    公开(公告)日:2013-04-23

    申请号:US12783078

    申请日:2010-05-19

    摘要: A liquid crystal polymer marking is obtainable by a process that comprises applying a first chiral liquid crystal precursor composition onto a substrate, heating the composition to bring same to a first chiral liquid crystal state, applying to at least one area of the first composition a second chiral liquid crystal precursor composition, heating the at least one area to bring same to a second chiral liquid crystal state, and subsequently curing and/or polymerizing the resultant product. This abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.

    摘要翻译: 液晶聚合物标记可通过包括将第一手性液晶前体组合物施加到基底上的方法获得,加热组合物使其达到第一手性液晶状态,将第一手性液晶前体组合物施加到第一组合物的至少一个区域, 手性液晶前体组合物,加热至少一个区域以使其达到第二手性液晶状态,随后固化和/或聚合所得产物。 该摘要既不旨在限定本说明书中公开的发明,也不旨在以任何方式限制本发明的范围。

    Security marking authentication device
    9.
    发明授权
    Security marking authentication device 有权
    安全标识认证设备

    公开(公告)号:US08985463B2

    公开(公告)日:2015-03-24

    申请号:US12681753

    申请日:2007-10-09

    IPC分类号: G06K7/10 G07D7/00 G07D7/12

    CPC分类号: G07D7/00 G07D7/12

    摘要: The invention discloses an authentication device for the visual authentication of a document or item comprising a circular polarizing security marking, said device comprising a light source and polarization filters for the either parallel or alternate illumination of said marking on said document with left- and right-circular polarized light. Corresponding methods for the visual and the automated authentication of the marking are disclosed as well.

    摘要翻译: 本发明公开了一种用于对包括圆形偏振安全标记的文件或物品进行视觉认证的认证装置,所述装置包括用于所述文件上的所述标记的平行或交替照明的光源和偏振滤光器, 圆偏振光。 还公开了用于标记的视觉和自动认证的相应方法。