Optical disc recording medium and method of manufacturing the same
US7433293B2 · kind B2 · utility
1Cited by
2References
16Claims
0Family size
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Inventors
Key dates
| Filing date | May 30, 2003 |
| Grant date | Oct 7, 2008 |
| Priority date | — |
| Expiry date | Aug 21, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/263
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical disc recording medium of the present invention comprises a first substrate (11) having a physically pre-formatted surface; a reflective film (12) formed on the pre-formatted surface of the first substrate (11); a transparent layer (13) with a thickness of 50-430 μm formed on the reflective film (12); a second substrate (15) composed of transparent material and located at a distance of certain spacing from the transparent layer (13); and a recording layer (14) for hologram recording filled between the transparent layer (13) and the second substrate (15).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.