The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 27, 2014
Filed:
Sep. 03, 2008
André Leopold, Berlin, DE;
Christian Kunath, Berlin, DE;
Jens Ehreke, Berlin, DE;
Gerhard Hochenbleicher, Fürstenfeldbruck, DE;
Christian Klepzig, München, DE;
Michael Langgassner, Pliening, DE;
André Leopold, Berlin, DE;
Christian Kunath, Berlin, DE;
Jens Ehreke, Berlin, DE;
Gerhard Hochenbleicher, Fürstenfeldbruck, DE;
Christian Klepzig, München, DE;
Michael Langgassner, Pliening, DE;
Bundesdruckerei GmbH, Berlin, DE;
Abstract
A method produces colored individualized holograms for use as security elements for documents, and to a device for producing individualized holograms. The method generates light formed of different colors, spatially modulates the light, color by color, in an individual manner, optically guides the modulated light such that the light is at least partially refracted and/or reflected on a holographic master and is superposed in a holographic recording material with the modulated non-refracted and/or reflected light, and records the hologram. The light is modulated, color by color and at the same time, by a plurality of spatial light modulators. Every color is associated with its own spatial light modulator and a plurality of monochrome modulated light beams of the plurality of colors is combined in a collinear manner prior to refraction and/or reflection on the holographic master and the superposition in the recording material to give a multicolor exposure light beam.