| 摘要 |
The invention concerns drive circuitry for driving a plurality of liquid lenses, each liquid lens comprising first and second immiscible liquids, an interface between the first and second liquids being movable by electrowetting by application of a drive voltage signal, said drive circuitry arranged to generate an independent drive voltage signal for each of said liquid lenses, the drive circuitry comprising: generating means (406, 408, 410, 412) arranged to generate a fixed drive voltage (V dc ); a duty cycle controller (418) arranged to receive data values indicating a duty cycle to be applied to each of said plurality of liquid lenses, and to generate a control timing signal for each of said plurality of liquid lenses, each control timing signal having the duty cycle indicated by the controller; and driving means (426, 428, 430, 432) arranged to generate an independent drive voltage signal for each of said plurality of liquid lenses by selectively applying said fixed drive voltage, based on the control timing signal associated with each liquid lens.
|
