Hologram
US6317227A · kind A · utility
99Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1999 |
| Grant date | Nov 13, 2001 |
| Priority date | — |
| Expiry date | Dec 30, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2260/12
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A hologram has a hologram element 3 containing a photopolymer and a cover film 22 and cover plate 21 which cover its surfaces. An adhesive 1 is used for bonding the cover film to the hologram element and the cover plate to the hologram element. The hologram has excellent humidity resistance, chemical resistance, solvent resistance and heat resistance, prevents coloration, can maintain its holographic properties and allows easy repositioning of the hologram element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.