Method and apparatus for storage and retrieval with multilayer optical disks
US5526338A · kind A · utility
276Cited by
6References
35Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 10, 1995 |
| Grant date | Jun 11, 1996 |
| Priority date | — |
| Expiry date | Mar 10, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2007/0013
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A multilayer optical disk system, which includes an optical disk unit having a number of connected optical disks. A number of light sources, such as diode lasers, are used to provide a number of light beams of different wavelengths. A wavelength multiplexer combines the light beams into a single beam which is then axially dispersed so that light of different wavelengths are simultaneously focuses onto the different optical disks. A wavelength demultiplexer splits light reflected from the optical disks according to wavelength to produce separate beams which are then separately detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.