Optical head for a videodisc recorder/player
US4301527A · kind A · utility
10Cited by
9References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 11, 1979 |
| Grant date | Nov 17, 1981 |
| Priority date | — |
| Expiry date | Jun 11, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical head comprising a lens disposed at a position for forming spot images of a semiconductor laser having a plurality of lasing points, in which beams from the semiconductor laser are focused on a disc on which predetermined information is recorded by light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.