Vibration actuator, and lens barrel and camera provided with same
US9401666B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2011 |
| Grant date | Jul 26, 2016 |
| Priority date | — |
| Expiry date | May 16, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N2/163
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A vibration actuator that is easy to manufacture and has good driving performance, and a lens-barrel and a camera provided with the same. The vibration actuator is provided with an oscillator that generates oscillations; and a relative movement member that is pressure contacts the oscillator, and moves relative to the oscillator due to the oscillation. Either a contact face of the oscillator with respect to the relative movement member or a contact face of the relative movement member with respect to the oscillator is a thermosetting resin film that is formed of polyamide-imide resin and fluororesin, and the other contact face is an anodic oxide film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.