Non-linear optical saturable absorber layer in an optical disk to discriminate wavelength above or below a threshold level of intensity
US5315573A · kind A · utility
17Cited by
6References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 31, 1992 |
| Grant date | May 24, 1994 |
| Priority date | — |
| Expiry date | Jul 31, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/146
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An information recording medium for suppressing the interferences of bits before and after reproduction and improving the optical resolution with saturable absorber 102 disposed adjacent or in an information recording medium layer 103. The recorded information is detected only from a region having a predetermined optical intensity or more of the focused spot so that minute information bits smaller than the optical resolution can be reproduced to improve the recording density of an optical disk drive drastically.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.