Eddy attenuating apparatus for an optical pickup assembly and disc drive adopting the same
US7296281B2 · kind B2 · utility
0Cited by
2References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2004 |
| Grant date | Nov 13, 2007 |
| Priority date | — |
| Expiry date | Oct 8, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/08582
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical pickup assembly having: a pickup base; an actuator installed in the pickup base, and having a blade, on which an objective lens to radiate light onto a disc is mounted; a cover, installed to surround the actuator, and regulating a range of movement of the blade; and an attenuator protruding from an inside of the cover, splitting an eddy current occurring during rotation of the disc into a plurality of small eddy currents, and attenuating a disturbance acting on the blade.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.