METHOD AND DEVICE FOR CONTROLLING A VARIABLE FOCAL LENGTH LIQUID LENS

摘要

The present invention concerns a method for controlling a variable focal length lens (10) comprising a dioptre (28) capable of being deformed by variation of the electro-wetting characteristics by application of a control voltage (V), wherein a focal length value corresponds to a given control voltage in the steady state, said method comprising: - applying, during a transition between the application of a first control voltage (V<SUB>1</SUB>) corresponding to a first focal length value (f<SUB>1</SUB>) and a second control voltage (V<SUB>2</SUB>) corresponding to a second focal length value (f<SUB>2</SUB>), a control voltage which is different from the first and second control voltages and changes according to a given profile that depends on the first and second control voltages.