Liquid lens chip, driving apparatus and driving method thereof
US10261309B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2017 |
| Grant date | Apr 16, 2019 |
| Priority date | — |
| Expiry date | Mar 31, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B3/14
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A liquid lens chip, a driving apparatus and a driving method thereof are provided. The driving apparatus includes a carrier and a driver. The carrier is configured to carry a liquid lens and has a plurality of electrode pairs in contact with the liquid lens. The driver provides a periodic first driving signal to a selected electrode pair of the electrode pairs during a first time period according to a scan control signal to change a shape of the liquid lens. The driver further provides a periodic second driving signal to an opposite electrode pair opposite to the selected electrode pair during a second time period to recover the shape of the liquid lens which has been changed during the first time period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.