Micro-optic anticounterfeiting elements for currency and other items using virtual lens systems
US12181690B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2022 |
| Grant date | Dec 31, 2024 |
| Priority date | — |
| Expiry date | Aug 15, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B3/0075
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An optical security element to limit counterfeiting. The element includes a lens array with a first side and a second planar side opposite the first side. A plurality of lenses are formed on the first side of the lens array, and an ink layer is provided proximate the second planar side. The ink layer provides an interlaced image, which includes a matrix of frame or image elements under each of a plurality of lens sets or “virtual lenses,” each of which includes at least four lenses arranged in a grouping with an equal or unequal number of lenses on a side (e.g., a 2 by 2 array or a 2 by 3 array). The interlaced element are arranged in non-sequential order in two interlacing axes (e.g., via non-sequential interlacing in both directions) to be distributed throughout an area under the at least four lenses rather than under a single lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.