Optical pickup actuator performable tilting operation
US6801483B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 13, 2001 |
| Grant date | Oct 5, 2004 |
| Priority date | — |
| Expiry date | Jul 15, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/0935
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In an optical pickup actuator performable a tilting operation which operates an object lens so as to follow the center of signal tracks of an optical disc, an optical pickup actuator performable a tilting operation includes a plurality of damper holders separately fixed to both sides of a base, a lens holder placed between the plurality of damper holders and having an object lens for reading and writing information on a disc, suspension support means separately connected between both sides of the lens holder and the plurality of damper holders so as to support the lens holder as two sides one-stage support structure, and magnetic operating means separately installed at the lens holder and the base and operating the lens holder so as to follow an optical disc, accordingly an optical pickup actuator performable a tilting operation in accordance with the present invention can perform not only a translational motion in a tracking direction and a focusing direction but also a tilting motion in a radial direction and a tangential direction by minimizing a constraining force about the lens holder, thus data recorded on a high density disc can be accessed more accurately.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.