Camera module actuator
US11163211B2 · kind B2 · utility
1Cited by
1References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2017 |
| Grant date | Nov 2, 2021 |
| Priority date | — |
| Expiry date | Mar 27, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/67
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An actuator includes a magnet, a driving coil facing the magnet, a driver, and a position calculation processor. The driver is configured to move the magnet in at least one of an optical axis direction and a direction perpendicular to the optical axis by applying a driving signal to the driving coil. The position calculation processor includes sensing coils, and is configured to calculate a position of the magnet according to inductance levels of an inductor of the sensing coils. The inductance levels vary according to movements of the magnet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.