Optical pickup with bilateral and vertical symmetry
US5165088A · kind A · utility
24Cited by
5References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 30, 1990 |
| Grant date | Nov 17, 1992 |
| Priority date | — |
| Expiry date | Jan 30, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/093
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A pair of driving coils each having a focusing coil and a driving coil are arranged such that the focusing coils, and the tracking coils, of each of the driving coils are attached on opposite side surfaces of an optical-parts holder in a manner so that the focusing coils, and tracking coils, are symmetrically disposed both bilaterally and vertically with respect to the center of gravity of the optical-parts holder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.