Invention Grant
- Patent Title: Security device with a zero-order diffractive microstructure
- Patent Title (中): 具有零级衍射微结构的安全装置
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Application No.: US13893020Application Date: 2013-05-13
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Publication No.: US08824032B2Publication Date: 2014-09-02
- Inventor: Marc Schnieper , Alexander Stuck , Harald Walter
- Applicant: CSEM Centre Suisse d Electronique et de Microtechnique S.A.
- Applicant Address: CH Neuchatel
- Assignee: CSEM Centre Suisse d'Electronique et de Microtechnique S.A.
- Current Assignee: CSEM Centre Suisse d'Electronique et de Microtechnique S.A.
- Current Assignee Address: CH Neuchatel
- Agency: Fish & Richardson P.C.
- Priority: GB0417422.3 20040805
- Main IPC: G03H1/00
- IPC: G03H1/00 ; G02B5/18
Abstract:
A security device including a zero order diffractive microstructure buried within a substrate. One or more optical structures, such as microlenses, may be formed on a surface of the substrate. The optical structures modify the optical characteristics of the zero order diffractive microstructure. Various alternatives or additional optical structures and methods of producing the security device are described in additional embodiments.
Public/Granted literature
- US20130301131A1 Security Device With a Zero-Order Diffractive Microstructure Public/Granted day:2013-11-14
Information query
