Pickup system in optical information recording and reproducing apparatus with damped lead wires
US4794580A · kind A · utility
26Cited by
5References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 25, 1986 |
| Grant date | Dec 27, 1988 |
| Priority date | — |
| Expiry date | Aug 25, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/0932
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical pickup system in which a tracking objective lens is moved by opposed magnetic coils attached to the lens along the axis of the lens and in the transverse direction across the recording tracks. A servo system on a fixed base supplies current to the movable coils by lead wires which are connected at the middle to a fixed vibration absorbing material, such as polyurethane foam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.