Methods for forming sheeting with a composite image that floats and a master tooling
US8586285B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 2008 |
| Grant date | Nov 19, 2013 |
| Priority date | — |
| Expiry date | Nov 9, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B30/56
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A sheeting and a method of forming a sheeting from a master tool are described where the sheeting has a composite image that floats above or below the sheeting. The method includes providing a first sheeting comprising a first array of microlenses and a photopolymerizable first material layer adjacent to the first array of microlenses. Another step is exposing the first sheeting to a radiation source to form a master tool comprising a plurality of polymerized first structured areas in the first material layer, wherein at least some of the first structured areas include a portion shape in common with at least some of the first structured areas and wherein each first structured area is associated with one of the first array of microlenses. Yet another step is replicating the plurality of first structured areas using a substance that conforms to the plurality of structured areas to form a second material layer having a plurality of replicated structured areas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.