Magneto-optic transducer with enhanced signal performance
US4654837A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 6, 1985 |
| Grant date | Mar 31, 1987 |
| Priority date | — |
| Expiry date | Sep 6, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B11/10547
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magneto-optic transducer for providing an optical indication of variations in magnetization in a magnetic storage medium located along a predetermined path. The transducer has a thin film of magneto-optic material with an edge positionable closely adjacent the storage medium path so that the magneto-optic film is magnetized in accordance with the magnetization in the storage medium. The magneto-optic film is supported such that polarized light projected along an incident optical path, convergent with the storage medium path at an acute angle, intercepts the magneto-optic film substantially normally and is reflected back generally along the incident optical path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.