Invention Grant
- Patent Title: Grid image and method for the production thereof
- Patent Title (中): 网格图像及其制作方法
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Application No.: US11995228Application Date: 2006-07-04
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Publication No.: US07986459B2Publication Date: 2011-07-26
- Inventor: Wittich Kaule , Marius Dichtl
- Applicant: Wittich Kaule , Marius Dichtl
- Applicant Address: DE Munich
- Assignee: Giesecke & Devrient GmbH
- Current Assignee: Giesecke & Devrient GmbH
- Current Assignee Address: DE Munich
- Agency: Greenlee Sullivan P.C.
- Priority: DE102005032997 20050714
- International Application: PCT/EP2006/006489 WO 20060704
- International Announcement: WO2007/006455 WO 20070118
- Main IPC: G02B5/18
- IPC: G02B5/18
Abstract:
The present invention relates to a grating image (12) for depicting at least one unscreened halftone image having multiple brightness levels, the grating image exhibiting multiple grating fields (22-1, 22-2, 22-3) that include in each case an electromagnetic-radiation-influencing grating pattern composed of a plurality of grating lines and that, when illuminated, produce in each case an areal region of the halftone image having the same brightness level.
Public/Granted literature
- US20080198468A1 Grid Image and Method For the Production Thereof Public/Granted day:2008-08-21
Information query
