Method of manufacturing items with lens-based security features using multiple lenses dedicated to individual colors
US10583681B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2019 |
| Grant date | Mar 10, 2020 |
| Priority date | — |
| Expiry date | Mar 20, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B3/0056
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Products, such as branding labels, credit cards, and currency, that are fabricated so as to include an optical security element, which is designed to provide enhanced optical focusing onto each color used in the printed image (or in the ink layer). The optical security assembly may include a carrier film or substrate. An image element, e.g., a printed ink layer, is provided on a first surface of the carrier film/substrate, and the optical security assembly further includes an array or plurality of micro lenses on a second surface of the carrier film/substrate opposite the image element (when the substrate/carrier film is transparent). In order to make the registration and print requirements easier, pixels are isolated into sections of the printed ink layer, which can then be arranged to align with sets of lenses (i.e., each set/group of lenses may be dedicated to focusing upon a particular color of ink).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.