Objective lens actuator and method for producing the same
US5999501A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 9, 1998 |
| Grant date | Dec 7, 1999 |
| Priority date | — |
| Expiry date | Jan 9, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/0935
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A lens holder 2 holds an objective lens 1. Wires 5a.about.5d movably support the lens holder 2 relative to a stationary member 6 in a tracking direction and in a focus direction. The wires 5a.about.5d are integrally formed with the lens holder 2 and the stationary member 6 and one end and the other end of each of the wires are buried in the lens holder 2 and the stationary member 6. At a time of the integral molding, parts of the buried portions of the wires 5a.about.5d are exposed in notches 2a.about.2d and 6a.about.6d to be in contact with a mold for molding, thereby injection pressure of a molding material is received by the mold. This makes it possible to prevent deformation of the wires 5a.about.5d due to the injection pressure of the molding material, resulting in reducing inclination during actuation and degradation of frequency response characteristic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.