Optical head for controlling light irradiation in a magneto-optical recording and/or reproducing apparatus
US5539718A · kind A · utility
19Cited by
8References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 3, 1993 |
| Grant date | Jul 23, 1996 |
| Priority date | — |
| Expiry date | Sep 3, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/10212
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical head includes an irradiating device for irradiating a recording medium with a light beam, a separating device disposed in an optical path between the recording medium and the irradiating device, which is provided for separating a portion of the light beam traveling from the irradiating device to the recording medium, and a detecting device for detecting the portion of the beam separated by the separating device, which has a plurality of sensor portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.