Dual shield vertical magneto-optical read head
US6771567B2 · kind B2 · utility
9Cited by
2References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 6, 2001 |
| Grant date | Aug 3, 2004 |
| Priority date | — |
| Expiry date | Jan 5, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B11/10547
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magneto-optical read head for detecting magnetic transitions representing data stored in a magnetic recording medium as a sense layer having an optical property that is magnetic field-dependent, two magnetic shield layers respectively disposed on opposite sides of the sense layer and allowing magnetic flux from substantially only one of the magnetic transitions to interact with the sense layer at a time, with one of the magnetic shield layers being transparent at a wavelength allowing light at that wavelength to enter into and exit from the sense layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.