Thin foil hologram
US4990415A · kind A · utility
15Cited by
4References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 1, 1988 |
| Grant date | Feb 5, 1991 |
| Priority date | — |
| Expiry date | Aug 1, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2260/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A process for manufacturing a hologram on a stable substrate, such as flat glass, and for thereafter transferring that hologram to another substrate, including a curved surface. The process includes the use of an intermediate polyene-based urethane or epoxy acrylate adhesive layer, preferably comprised of Norland Optical Cement. An improved hologram is also disclosed having superior moisture barrier properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.