Actuator and lens drive apparatus
US7679848B2 · kind B2 · utility
0Cited by
7References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 10, 2006 |
| Grant date | Mar 16, 2010 |
| Priority date | — |
| Expiry date | Aug 10, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N2/025
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An actuator is provided and has an electro-mechanical conversion element; a driving frictional member attached at one end of the electro-mechanical conversion element with respect to a direction of expansion and contraction thereof; a plurality of driven members frictionally engaged with the driving frictional member; a plurality of biasing units, each biasing one of the plurality of driven members to be frictionally engaged with the driving frictional member; and a biasing-force adjusting unit that adjusts respective biasing-forces of the plurality of biasing units.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.