Torsional hinged device with improved coupling between a magnet mounted to said device and an electrical coil
US7414503B1 · kind B1 · utility
2Cited by
1References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 2, 2007 |
| Grant date | Aug 19, 2008 |
| Priority date | — |
| Expiry date | Nov 2, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F7/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A pivoting device such as a MEMS mirror provides improved coupling between a permanent magnet on the device and an adjacent electrical coil that may provide a drive force or position sensing. The improved coupling is obtained by forming a cavity in the coil structure. The cavity receives the permanent magnet such that the spacing between the magnet and the electrical windings or coil is at a minimum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.