Lenticular sheet
US6124975A · kind A · utility
11Cited by
7References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 6, 1998 |
| Grant date | Sep 26, 2000 |
| Priority date | — |
| Expiry date | Nov 6, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B3/0056
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A transparent sheet is provided on both sides with a lenticular array (4,). The embossments (7) of at least one of the arrays (6) has a cross-section showing at least two bends (11-14), thereby improving the visibility of the Moire pattern formed by the two arrays. The sheet may be used as an anti-counterfeit mark.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.