Self-referenced holography using element formed on a holographic medium
US7239594B2 · kind B2 · utility
4Cited by
8References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 7, 2003 |
| Grant date | Jul 3, 2007 |
| Priority date | — |
| Expiry date | May 6, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/0037
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention is directed to self-referenced holographic recording techniques that make use of an element of a holographic medium to create a reference beam from a zero frequency Fourier component of a data encoded object beam. In other words, the self-referencing element may be formed on the holographic medium, rather then being a separate element of the holographic recording system. The element may comprise a diffusive element on the medium, designed to create a reference beam having controlled angles, phase and/or amplitude.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.