| 摘要 |
A component has a substrate ( 1 ) made of a transparent material, for example glass. On this layer ( 1 ), there is a linear polarizer ( 2 ) on which there is a layer ( 3 ) of a photo-oriented polymer network (PPN)(-LPP) which is oriented in locally varying fashion via its surface which covers the substrate. The layer ( 3 ) is adjoined by an anisotropic layer ( 4 ) of cross-linked liquid-crystal monomers. This layer ( 4 ) then has a molecular arrangement whose orientation is defined by the underlying orientation layer ( 3 ). The layer ( 4 ) will have been photocross-linked by exposure to a suitable wavelength of light, with the result that the molecular orientation defined by the PPN layer ( 3 ) is fixed. The element, denoted as a whole by 7 , can then be used as an optical component which is protected against forgery, it being possible for the orientation pattern of the liquid-crystal layer or the optical information stored therein to be made visible by means of an external polarizer ( 5 ), for example. |
