Invention Grant
- Patent Title: Method and device for producing colored individualized holograms
- Patent Title (中): 用于生产彩色个性化全息图的方法和装置
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Application No.: US12676406Application Date: 2008-09-03
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Publication No.: US08736933B2Publication Date: 2014-05-27
- Inventor: André Leopold , Christian Kunath , Jens Ehreke , Gerhard Hochenbleicher , Christian Klepzig , Michael Langgassner
- Applicant: André Leopold , Christian Kunath , Jens Ehreke , Gerhard Hochenbleicher , Christian Klepzig , Michael Langgassner
- Applicant Address: DE Berlin
- Assignee: Bundesdruckerei GmbH
- Current Assignee: Bundesdruckerei GmbH
- Current Assignee Address: DE Berlin
- Agent Laurence A. Greenberg; Werner H. Stemer; Ralph E. Locher
- Priority: DE102007042386 20070904
- International Application: PCT/EP2008/007406 WO 20080903
- International Announcement: WO2009/030501 WO 20090312
- Main IPC: G03H1/12
- IPC: G03H1/12

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.
Public/Granted literature
- US20100265553A1 METHOD AND DEVICE FOR PRODUCING COLORED INDIVIDUALIZED HOLOGRAMS Public/Granted day:2010-10-21
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