| 摘要 |
<p>Production of an optical security component having a metallized appearance and comprising a diffraction grating comprises coating a transparent polyester film with an embossing layer, holographically impressing microstructures into the hologram layer, applying a thin layer of dielectric material of high refractive index by vacuum deposition, applying a colored translucent varnish layer by coating or printing, and applying an aluminum layer by vacuum deposition. An Independent claim is also included for an optical security component having a metallized appearance and comprising a diffraction grating, comprising a transparent polyester film (1), an embossing layer (3), a high refractive index layer (7), a thin colored varnish layer (4bis) and an aluminum layer (5bis).</p> |
