Optical disk
US5063096A · kind A · utility
13Cited by
2References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 7, 1990 |
| Grant date | Nov 5, 1991 |
| Priority date | — |
| Expiry date | Jun 7, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31692
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
There is disclosed an optical disk having an optical reflectivity of 70% or above which comprises a substrate made of a thermoplastic saturated norbornene type polymer having a glass transition temperature of 100.degree. C. or above and a light reflecting layer formed by laminating, on said substrate, a multi-layer film constituted of at least one compound selected from the group consisting of metallic oxides and metallic fluorides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.