Optical collimator assembly and optical pickup device including the same
US8233360B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 18, 2011 |
| Grant date | Jul 31, 2012 |
| Priority date | — |
| Expiry date | Apr 18, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/1376
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical collimator assembly used in an optical pickup device and an optical pickup device are provided. The optical collimator assembly may include a collimating lens, a lens holder for supporting the collimating lens, a piezoelectric element coupled to the lens holder and including a female screw portion disposed along a central axis in one direction and a plurality of pairs of piezoelectric bodies disposed symmetrically with one another around the central axis and for causing deformation in a direction that crosses the central axis, and a male screw type transfer screw coupled to the female screw portion of the piezoelectric element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.