Stage driving device, method for manufacturing stage driving device, and imaging apparatus
US11448357B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 24, 2020 |
| Grant date | Sep 20, 2022 |
| Priority date | — |
| Expiry date | Dec 11, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2201/18
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A stage driving device includes a secured section; a movable section supported movably along a movement plane relative to the secured section; a driver including a magnet at one of the secured section and the movable section and a coil at the other one of the secured section and the movable section; a magnetic sensor at one of the secured section and the movable section provided with the coil, the magnetic sensor configured to detect a position of the movable section with respect to the secured section; and a magnetic body at the one of the secured section and the movable section provided with the coil, the magnetic body configured to make the position of the movable section stable with respect to the secured section in a direction perpendicular to the movement plane using a magnetic force that acts between the magnetic body and the magnet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.