Processing holograms
US4788115A · kind A · utility
6Cited by
4References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 10, 1986 |
| Grant date | Nov 29, 1988 |
| Priority date | — |
| Expiry date | Dec 10, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/146
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Holograms which contain gelatin as the binder are prepared by holographically exposing the material by use of coherent light, developing the holographic image by a chemical or physical process and before processing, simultaneously or subsequently, treating the material with a solution of a gelatin reactive compound which has a molecular weight of over 200 and which reacts with the gelatin to form covalent bonds therewith to increase the molecular bulk of the gelatin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.