Broad band multilayer optical storage structure having a thin metallic optically transmissive layer
US4625217A · kind A · utility
1Cited by
4References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 6, 1984 |
| Grant date | Nov 25, 1986 |
| Priority date | — |
| Expiry date | Jul 6, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2007/24316
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical recording structure layer has an optical reflecting layer, a phase layer on the reflective layer, an active layer on the phase layer and a matrix layer on the active layer. The phase layer and matrix layer are substantially transparent to radiation. A thin metal layer on the matrix layer has a thickness from 20 to 100 Angstroms to achieve a relatively constant absorption and reflection characteristics for the structure over a broad band of radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.