Invention Grant
- Patent Title: Grid image
- Patent Title (中): 网格图像
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Application No.: US12673805Application Date: 2008-08-07
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Publication No.: US08526085B2Publication Date: 2013-09-03
- Inventor: Marius Dichtl , Thomas Gerhardt
- Applicant: Marius Dichtl , Thomas Gerhardt
- Applicant Address: DE Munich
- Assignee: Giesecke & Devrient GmbH
- Current Assignee: Giesecke & Devrient GmbH
- Current Assignee Address: DE Munich
- Agency: Lathrop & Gage LLP
- Priority: DE102007039591 20070822
- International Application: PCT/EP2008/006497 WO 20080807
- International Announcement: WO2009/024265 WO 20090226
- Main IPC: G03H1/00
- IPC: G03H1/00

Abstract:
The present invention relates to a grating image (30) for depicting a motif (24) that moves upon tilting the grating image (30) about a tilt axis (20), having two or more grating fields (32, 34, 36) having a viewing-angle-dependent visual appearance, that each include an electromagnetic-radiation-influencing grating pattern composed of a plurality of grating lines, and exhibit a preferred direction that establishes a viewing angle from which the appropriate grating field (32, 34, 36) is visually distinguishable, wherein, according to the present invention, the grating fields (32, 34, 36) are formed from a plurality of sub-regions nested within each other (32-i, 34-i, 36-i), and each grating field (32, 34, 36) displays a motif (24) view (24-A, 24-B, 24-C) that is shifted substantially along the tilt axis (20), wherein the viewing angles for the visual distinguishability and the shifts of the motif views (24-A, 24-B, 24-C) of the grating fields (32, 34, 36) are coordinated with each other such that, upon tilting the grating image (30), a motif (24) depiction that moves substantially along the tilt axis (20) is created for the viewer.
Public/Granted literature
- US20110069360A1 GRID IMAGE Public/Granted day:2011-03-24
Information query