Optical record carrier
US5419937A · kind A · utility
2Cited by
3References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 11, 1993 |
| Grant date | May 30, 1995 |
| Priority date | — |
| Expiry date | Jan 11, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31678
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical record carrier with a substrate (1) having thereon a stack (3) of a reflection layer (4), an interference layer (5) and a phase-change recording-layer (6) in that order, the incident radiation being first incident on the reflection layer. Due to this structure of the stack a high contrast between the inscribed and uninscribed areas of the recording layer, and/or a high reflection, is obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.