Apparatus for supporting optical system
US5208703A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 1990 |
| Grant date | May 4, 1993 |
| Priority date | — |
| Expiry date | Aug 8, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/0935
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus for supporting an objective lens of an optical head including a lens holder for holding the objective lens, a movable member for supporting the lens holder, and a supporting member for supporting the movable member movably in focusing and tracking directions. The supporting member includes four leaf springs and each of the leaf springs has a main beam portion, first and second end portions for securing the supporting member to the movable member and a stationary member and a flexure portion which is provided in the vicinity of the second end portion and includes a beam element which is aligned with the main beam portion, two first projecting elements which extend from the beam element in a direction perpendicular to a longitudinal direction of the main beam portion on respective sides of the beam element and two second projecting elements which extend in parallel with the beam element from the second end portion. The supporting member further includes a damping member applied on the main beam portion and flexure portion such that spaces formed between the first and second projecting elements and the beam element are completely filled with resilient material of the damp…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.