Holographic recording medium, method for manufacturing the same, and holographic recording-reproducing system
US7545723B2 · kind B2 · utility
3Cited by
3References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 20, 2004 |
| Grant date | Jun 9, 2009 |
| Priority date | — |
| Expiry date | Oct 27, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/24044
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a holographic recording medium, noise is prevented from being generated by servo light in a recording layer without scarifying recording regions. A holographic recording medium 12 has a servo layer 16 formed on a recording layer 14 on a substrate 13 via a spacer layer 15. The servo layer 16 reflects the servo light and has one of wavelength selectivity and incident angle selectivity each of which allows object light and reference light to pass through.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.