| 摘要 |
<p>An optical component in the form of an identification element, especially for counterfeit protection and copy protection, has an optically anisotropic layer (4) having regions of different optical axes that is arranged over a reflector (2). The anisotropic layer (4) consists preferably of a liquid crystal polymer in which the orientation of the liquid crystals is different in different areas. This orientation pattern is initially hidden from a viewer, but becomes visible by means of an additional polariser. To improve the visual appearance of the identification element, a white light hologram is used as reflector (2).</p> |
