Method and device for damping lens vibration
US8190015B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2008 |
| Grant date | May 29, 2012 |
| Priority date | — |
| Expiry date | Aug 14, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/687
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a method for reducing lens vibration in an image capture device, a lens movement requirement is broken up into N smaller lens move steps, and the lens is moved a first of the N smaller steps. A wait time is inserted after completing the first of the N smaller steps, and then the moving and inserting steps are repeated until the remaining N smaller move steps have been completed. The image capture device includes a voice coil motor for moving the lens under control of a controller in accordance with the lens movement requirement, which reflects a determined lens position. The voice coil motor includes springs which impart vibration to the lens during lens movement. The vibration imparted by the springs to the lens is thus actively dampened during the lens movement to the determined lens position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.