Camera module and auto focusing method thereof
US9900495B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 2017 |
| Grant date | Feb 20, 2018 |
| Priority date | — |
| Expiry date | May 10, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/182
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention includes a fixed unit having a perforated hole formed therein, a movable unit including at least one lens, the movable unit configured to linearly move in the perforated hole of the fixed unit, a movable coil disposed on a surface of the movable unit, and a fixed coil disposed on a surface of the fixed unit, the fixed coil configured to receive from the movable coil an induced current or voltage according to a distance from the movable coil, wherein the movable coil receives a current or a voltage via a first wiring and a second wiring for moving the movable unit, and wherein the fixed coil outputs a current or a voltage via a third wiring and a fourth wiring based on the received induced current or voltage from the movable coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.