Objective lens drive, optical pickup, and optical disc apparatus
US7830759B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 22, 2007 |
| Grant date | Nov 9, 2010 |
| Priority date | — |
| Expiry date | Nov 23, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2007/0006
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An objective lens drive includes a lens holder holding first and second objective lenses and moved at least in a focusing direction substantially parallel to optical axes of the objective lenses and in a tracking direction orthogonal to the focusing direction; a support supporting the lens holder movably at least in the focusing and tracking directions; a first adjusting unit provided between the first objective lens and the lens holder and adjusting a tilt of the first objective lens in a direction about an axis in a first direction being any direction in a plane orthogonal to the focusing direction; and a second adjusting unit provided between the second objective lens and the lens holder and adjusting a tilt of the second objective lens in a direction about an axis in a second direction being in a plane orthogonal to the focusing direction and substantially orthogonal to the first direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.