Driving device provided in image stabilizer, control method therefor, and image pickup apparatus
US10244173B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 15, 2017 |
| Grant date | Mar 26, 2019 |
| Priority date | — |
| Expiry date | Mar 2, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/6812
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A driving device that is capable of suppressing enlargement of diameter when a movable amount of a moving part increases. The driving device drives a moving part that is movably supported by a fixing part in a predetermined direction. A drive unit has first and second actuators each of which includes a coil arranged in one of the fixing part and moving part and a magnet arranged in the other part so as to face the coil, and gives a thrust to drive the moving part. A control unit controls the drive unit by controlling electric currents supplied to the coils of the first and second actuators in response to results obtained by multiplying first and second coefficients that vary in response to the position of the moving part to first and second control values obtained from first and second functions based on the position of the moving part, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.