Actuator and lens drive apparatus
US7474037B2 · kind B2 · utility
0Cited by
7References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 10, 2006 |
| Grant date | Jan 6, 2009 |
| Priority date | — |
| Expiry date | Jan 18, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N2/025
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An actuator is provided and includes: an electro-mechanical conversion element; a driving frictional member attached at one end of the electromechanical conversion element with respect to a direction of expansion and contraction of the electromechanical conversion element; and a driven member frictionally engaged with the driving frictional member. The driving frictional member has a rod-like shape, and a cross section of the driving frictional member orthogonal to a longitudinal direction thereof is changed along the longitudinal direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.