Hologram recording medium
US7342697B2 · kind B2 · utility
2Cited by
0References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2005 |
| Grant date | Mar 11, 2008 |
| Priority date | — |
| Expiry date | Nov 11, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/256
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A hologram recording medium includes a hologram recording layer and a transparent substrate layer stacked on the hologram recording layer. The recording layer records an interference pattern of a recording beam and a reference beam. The transparent substrate layer has an inner surface facing the hologram recording layer, and this surface is formed with trace zones for guiding the recording beam and the reference beam in a prescribed guide direction. The trace zones have a higher reflectance than that of the remaining area in the inner surface of the transparent substrate layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.