Methods of manufacturing security documents and security devices
US10467721B2 · kind B2 · utility
0Cited by
7References
13Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 11, 2016 |
| Grant date | Nov 5, 2019 |
| Priority date | — |
| Expiry date | Jul 11, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30144
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods of manufacturing security documents and security devices, and corresponding products, provide a lenticular device effect in a first registration zone. Viewing its appearance from two different angles in this way, the relative positioning of the focussing element array and the image array can be judged to a high degree of accuracy. If the two arrays do not have the desired relative position, this will be clearly apparent since the different first and second images will not be captured at the first and second test viewing angles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.