Invention Grant
- Patent Title: Method and device for producing contact copies
- Patent Title (中): 生产联系人副本的方法和装置
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Application No.: US13640049Application Date: 2011-04-07
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Publication No.: US08810766B2Publication Date: 2014-08-19
- Inventor: Günther Dausmann
- Applicant: Günther Dausmann
- Applicant Address: DE Pliening-Ottersberg
- Assignee: Hologram Industries Research GmbH
- Current Assignee: Hologram Industries Research GmbH
- Current Assignee Address: DE Pliening-Ottersberg
- Agent Mark M. Friedman
- Priority: DE102010014305 20100409
- International Application: PCT/EP2011/055420 WO 20110407
- International Announcement: WO2011/124641 WO 20111013
- Main IPC: G03B27/06
- IPC: G03B27/06 ; G03H1/20 ; G03F7/20 ; G03H1/04 ; G03H1/02

Abstract:
A method and a device are described for producing copies/replica of a volume reflection hologram wherein a holographic film (4) is guided over a drum with polygon cross-section having at least two planar (polygon) master surfaces (3) to each of which at least one master (7) is attached in the circumferential direction, where the film is brought into contact with at least one master hologram (7) and its entire surface is exposed to laser. It is essential that to at least one of the master surfaces (5) with the film guided over it, a laser exposure unit (22) is assigned which allows full exposure of the respective master surface to parallel, coherent laser beams (6), and that the at least one exposure unit (22) follows section wise the rotational movement of the drum by a splitting angle with equal velocity and exposes the corresponding master surface (5) to then be reset quickly again and perform the same angular displacement and exposure together with the next master surface. In this manner, a highly productive multiplication even of large reflection holograms in high quality is possible.
Public/Granted literature
- US20130027678A1 METHOD AND DEVICE FOR PRODUCING CONTACT COPIES OF REFLECTION VOLUME HOLOGRAMS Public/Granted day:2013-01-31
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