Optically variable devices, security device and article employing same, and associated method of creating same
US9025251B2 · kind B2 · utility
0Cited by
8References
12Claims
0Family size
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Key dates
| Filing date | Dec 10, 2010 |
| Grant date | May 5, 2015 |
| Priority date | — |
| Expiry date | Jun 28, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/10
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An optically variable device (“OVD”) with an integral image system that includes a focusing element and an array of micro-objects which, when viewed through the focusing element, changes in appearance depending on the relative location from which the OVD is observed. A security device including the OVD and methods for creating the OVD are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.