Holographic recording method, apparatus therefor, and holographic recording and reproducing apparatus
US7554706B2 · kind B2 · utility
2Cited by
4References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2004 |
| Grant date | Jun 30, 2009 |
| Priority date | — |
| Expiry date | Nov 11, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2210/562
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A holographic recording method and apparatus capable of performing phase code multiplex recording without employing a phase spatial light modulator. The holographic recording apparatus 10 performs phase spatial modulation of a reference beam to be projected onto a holographic recording medium by means of a phase code mask 26 in which phase code patterns are recorded in advance as a hologram and which is employed in place of a phase spatial light modulator in a reference optical system 20.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.