Optical recording medium
US7876664B2 · kind B2 · utility
23Cited by
7References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2005 |
| Grant date | Jan 25, 2011 |
| Priority date | — |
| Expiry date | May 1, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/24
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical recording medium including three or more recording layers is provided. The optical recording medium includes an L0 layer, an L1 layer, an L2 layer, and an L3 layer as the recording layers and first to third light transmitting spacer layers respectively arranged between the recording layers. A refractive index n3 of the third light transmitting spacer layer is set to satisfy n3<n1 with respect to a refractive index n1 of the first and second light transmitting spacer layers. Thus, an effect of crosstalk light during reproduction can be reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.