Optical information reading-out apparatus
US4302830A · kind A · utility
45Cited by
6References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 1, 1979 |
| Grant date | Nov 24, 1981 |
| Priority date | — |
| Expiry date | May 1, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/09
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical information reading-out apparatus which makes use of a focusing and tracking mechanism including first and second leaf springs for connecting an objective lens supporting body to first and second supporting members, respectively, and adapted to be moved in tracking and focusing directions when subjected to a magnetic force or to the action of piezoelectric elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.