Lens driving device
US7595947B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2007 |
| Grant date | Sep 29, 2009 |
| Priority date | — |
| Expiry date | Nov 8, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/2023
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lens driving device including: a lens barrel having at least one lens therein; an actuator having a tip friction member provided at a leading end of a body thereof to be in contact with a friction member of the lens barrel, the actuator being flexed and bent upon application of power to provide a driving force necessary for driving the lens barrel in an optical axis direction; a preload member compressing the actuator against the lens barrel to keep the friction member and the tip friction member in contact with each other; and a guiding part guiding the lens barrel to move in the optical axis direction, wherein the friction member and the tip friction member are formed of a super-hard alloy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.