Patents Assigned to Hologram Industries (SA)
  • Patent number: 6943952
    Abstract: An optical security component for authenticating a document or a product including a transparent plastic film embossed to form an embossed surface and to have at least one diffraction grating; a layer of dielectric material of high optical index at least partially coated on the embossed surface and producing a colored effect of a first color for a first orientation of the component and a second different color for orientation perpendicular to the first orientation; a low optical index layer coated on a side opposite the viewing direction of the dielectric material; and a colored contrast layer having transparent zones and colored zones on the low optical index layer.
    Type: Grant
    Filed: October 7, 2004
    Date of Patent: September 13, 2005
    Assignee: Hologram Industries (SA)
    Inventor: Hugues Souparis