Optical pickup device, and recorder and/or player
US7103895B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 11, 2002 |
| Grant date | Sep 5, 2006 |
| Priority date | — |
| Expiry date | Nov 11, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B11/10532
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical pickup device includes a feed screw to move an optical pickup having an objective lens radially on an optical disc, a sliding member provided for slidable movement in relation to the optical pickup, and connected to the optical pickup by a coil spring that forces a shutter in a direction of unmasking the objective lens, and a connection member that connects the feed screw and sliding member to each other. As the feed screw is rotated, the sliding member moves the optical pickup radially on the optical disc, and when the optical pickup has arrived at a position at the lead-in side of the optical disc, the sliding member is further slid against the force of the coil spring to move the shutter and mask the objective lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.