Double hologram
AssigneeTesa Scribos GmbH
InventorsSteffen Noehte, Matthias Gerspach, Christoph Dietrich, Stefan Borgsmüller, Anna Blazejewski, Stefan Stadler, Jörn Leiber
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Abstract
The invention relates to a method of providing an article with identifying information, in which a hologram is provided from which at least first and second hologram patterns separated physically from each other can be reproduced. In this case, provision is made for the hologram to be produced in such a way that the first and second hologram patterns can generally be reproduced in one and the same direction but in different planes.
Claims20
A method of providing an article with one polymer area bearing a hologram as identifying information comprising:
- calculating one computer generated hologram such that at least two sharp patterns can be reproduced therefrom at different distances but into a same direction;
- and
- writing the computer generated hologram in the polymer area using one single light beam writing device.
Dependencies are inferred from the claim text.