Method of preparing holograms and the holograms prepared thereby
US4769301A · kind A · utility
5Cited by
9References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 10, 1986 |
| Grant date | Sep 6, 1988 |
| Priority date | — |
| Expiry date | Dec 10, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C5/44
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Holograms using gelatin as the binders are prepared by holographically exposing holographic material with coherent light, developing the holographic image by a chemical or physical process and before processing, simultaneously or subsequently, treating the material with an aqueous solution of a polymer which comprises a tertiary amine group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.