Dual layer optical storage medium having partially reflecting layer comprising antimony sulfide
US6628603B1 · kind B1 · utility
8Cited by
21References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 27, 1997 |
| Grant date | Sep 30, 2003 |
| Priority date | — |
| Expiry date | Jun 26, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/258
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A multi-layer optical storage medium includes a transparent substrate, a partially reflective layer, a transparent spacer, and a highly reflective layer. One pattern of data pits is provided on the substrate, adjacent the partially reflective layer, and another pattern of pits is provided on the spacer layer, adjacent the highly reflective layer. The partially reflective layer may be made of antimony sulfide, such as antimony(III) sulfide, Sb2S3. The invention also includes the optical data storage systems compatible with such media.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.