CONTROL OF ELECTROWETTING LENSES

摘要

A control circuit (40) for electrowetting lenses (41, 42) includes a driver circuit (45) for producing a controllable voltage supply (46) and a first (43) and a second (44) voltage modulator, each connected to receive the controllable voltage supply. The first and second voltage modulators are configured to respectively produce first (32) and second (33) modulated voltage outputs from the voltage supply. A controller (49) receives at least one set point signal (53, 52) and, as a function thereof, (i) controls the driver circuit to produce the voltage supply, and (ii) controls the first and second voltage modulators to produce the first and second modulated outputs.