Bleached holographic material and process for the fabrication thereof using halogens
US3967963A · kind A · utility
5Cited by
3References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 2, 1975 |
| Grant date | Jul 6, 1976 |
| Priority date | — |
| Expiry date | Sep 2, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2260/16
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Silver halide holographic materials have been fabricated by a bleach process which yields substantially improved printout stability while retaining high diffraction efficiencies. Halogen vapors, liquids and nonaqueous solutions are employed to transform amplitude holograms into thick phase holograms in processes that are relatively inexpensive and simple to complete. Recorded patterns produced by these processes may be used for diffraction gratings, Fresnel zone plates, optical elements and the production of special waveforms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.