Lens driving device, camera module, and camera mounting device
US10527818B2 · kind B2 · utility
1Cited by
1References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2017 |
| Grant date | Jan 7, 2020 |
| Priority date | — |
| Expiry date | Mar 19, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/0264
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Provided is a technology which: has a structure that is advantageous for size reduction and power saving; and, moreover, is useful when automatic focusing using a closed-loop control system. A lens driving device comprising: an autofocus driving unit; a Hall element which separates an autofocus magnet section; a first position detection magnet which is disposed near the Hall element; and a second position detection magnet which has the same configuration as the first position detection magnet and is disposed in a point symmetrical position relating to the first position detection magnet and the optical axis direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.