Double facing double storage capacity
US7133171B2 · kind B2 · utility
0Cited by
4References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 10, 2006 |
| Grant date | Nov 7, 2006 |
| Priority date | — |
| Expiry date | May 10, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2250/33
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A first holographic data storage device has a first set of holograms stored thereon. A second holographic data storage device has a second set of holograms stored thereon. An opaque layer is disposed between and attached to one side of the first and the second holographic data storage devices. In the case of double reflective diffractive recording, the opaque layer is not necessary.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.