Optical disk apparatus with objective lens protective unit
US7526781B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2004 |
| Grant date | Apr 28, 2009 |
| Priority date | — |
| Expiry date | Dec 30, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/121
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides an optical disk apparatus which has a cover to cover and uncover an objective lens provided in an optical pickup, thus preventing the objective lens from being contaminated with dust, etc. The optical disk apparatus includes an optical pickup conveying a cover conveying body, and a cover body which actuates the cover. The optical disk apparatus further includes an objective lens protective unit comprising a rack and pinion assembly for operating the cover In the optical disk apparatus of the present invention, the objective lens protective unit is operated by a rotation of the drive motor to move the cover, thus covering and uncovering the objective lens. Therefore, the objective lens is efficiently protected from outside dust.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.