Security device with a lens array comprising several etched colour patterns
US10787020B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2015 |
| Grant date | Sep 29, 2020 |
| Priority date | — |
| Expiry date | May 19, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M5/267
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A method for producing a security device (1) comprising a first colour pattern (A) visible along an associated viewing axis (Δα) and at least one second colour pattern (B) visible along an associated viewing axis (Δβ), comprising the following steps:—assembling an image layer (4) suitable for forming at least one colour pattern (A, B) by laser etching, on a support (3),—laser etching the first colour pattern (A) in the image layer (4), along the associated viewing axis (Δα) of same, in such a way that it can be seen through a lens array (7),—for each of said at least one second colour pattern (B), laser etching said at least one second colour pattern (A) in the image layer (4), along the associated viewing axis (Δβ) of same, in such a way that it can be seen through a lens array (7). A security device (1) obtained by said method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.