Objective lens actuator
US7606119B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2006 |
| Grant date | Oct 20, 2009 |
| Priority date | — |
| Expiry date | Sep 16, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/0933
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In one preferred embodiment, an objective lens actuator includes a base, a suspension apparatus mounted on the base, a holder suspended by the suspension apparatus for holding an objective lens, a voice coil motor (VCM) for driving the holder to vibrate, and a cover. The VCM includes a first yoke, a second yoke and a pair of magnets fixed on the first yoke and the second yoke respectively. The first yoke and the second yoke respectively include a first part and a second part. The cover is made of a material having a magnetic conductivity. The cover connects the first part and the second part of each of the first yoke and the second yoke.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.