Optical pickup actuator and optical recording and/or reproducing apparatus employing the same
US7228553B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 17, 2004 |
| Grant date | Jun 5, 2007 |
| Priority date | — |
| Expiry date | Nov 28, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/082
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical pickup actuator includes a; a bobbin in which a through hole is formed, an objective lens attached to the bobbin; a holder provided on the base to support the bobbin; a lens holder inserted in the through hole of the bobbin to support the objective lens, wherein the lens holder is made of a material having a heat conduction coefficient lower than that of the bobbin, a plurality of suspensions, each having one end coupled to the bobbin and the other end attached to a holder provided on a base, to support the bobbin capable of suspending, and a driving unit having a coil installed at the bobbin and a magnet installed on the base to drive the bobbin with an electromagnetic force generated by the interaction of current flowing in the coil and a magnetic field formed by the magnet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.