Magnetic device and lens drive device
US8116012B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 8, 2009 |
| Grant date | Feb 14, 2012 |
| Priority date | — |
| Expiry date | Aug 11, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F7/066
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A magnetic device may include a coil wound body having a first coil winding face and a second coil winding face in an axial direction, a coil wound around the first coil winding face and the second coil winding face, and a coil winding start part and a coil winding end part arranged on an opposite side to the second coil winding face with respect to the first coil winding face. The coil is wound around the first coil winding face by an odd number of layer(s) from the winding start part and then the coil is wound around the second coil winding face by an even number of layers in a reverse direction to the first coil winding face, and then the coil is wound around the first coil winding face by an odd number of layer(s) in a reverse direction to the second coil winding face. The magnetic device may be used in a lens drive device in which the coil wound body is a movable body having a lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.