Invention Grant
US08439402B2 Optical structure, in particular for a security document and/or a document of value
失效
光学结构，特别是用于安全文件和/或有价值的文件
- Patent Title: Optical structure, in particular for a security document and/or a document of value
- Patent Title (中): 光学结构，特别是用于安全文件和/或有价值的文件
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Application No.: US12085033Application Date: 2006-11-16
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Publication No.: US08439402B2Publication Date: 2013-05-14
- Inventor: Michel Camus , Henri Rosset
- Applicant: Michel Camus , Henri Rosset
- Applicant Address: FR Issy les Moulineaux FR Issy les Moulineaux
- Assignee: Arjowiggins,Arjowiggins Security
- Current Assignee: Arjowiggins,Arjowiggins Security
- Current Assignee Address: FR Issy les Moulineaux FR Issy les Moulineaux
- Agency: Oliff & Berridge, PLC
- Priority: FR0553480 20051116
- International Application: PCT/FR2006/051186 WO 20061116
- International Announcement: WO2007/057613 WO 20070524
- Main IPC: B42D15/00
- IPC: B42D15/00 ; G03B25/02
Abstract:
An optical structure comprising first and second opposite outside faces, at least a first interface comprising a first screen of microreliefs and arranged in such a manner that travel through the first interface from the first outside face towards the second outside face, passes from a first medium having a first refractive index to a second medium having a second refractive index that is greater than the first, and at least one second interface comprising a second screen of microreliefs and arranged in such a manner that travel through the second interface from the first outside face towards the second outside face, passes from a third medium having a third refractive index to a fourth medium having a fourth refractive index less than the third.
Public/Granted literature
- US20090121473A1 Optical Structure, in Particular for a Security Document and/or a Document of Value Public/Granted day:2009-05-14
Information query
