Camera module including liquid lens, optical device including the module, and method for driving the liquid lens
US11822095B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 2017 |
| Grant date | Nov 21, 2023 |
| Priority date | — |
| Expiry date | May 22, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/67
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Provided is a camera module, and a camera module including a core plate having a cavity for accommodating a conductive liquid and a nonconductive liquid; an electrode unit disposed on the core plate and electrically connected to the conductive liquid; an insulating unit disposed in the electrode portion and blocking contact of the nonconductive liquid; and a control unit for controlling voltages applied to the electrode unit, wherein the electrode unit includes a first electrode and a second electrode that change the interface between the conductive liquid and the nonconductive liquid by electromagnetic interaction, the first electrode includes a plurality of electrode sectors arranged sequentially along a circumferential direction about an optical axis, and the control unit sequentially controls voltages applied to the plurality of electrode sectors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.