Patent ID: 8400558
Filing Date: 2013-03-19
Classification: G02B,H04N

Abstract:
1. A method of controlling a liquid lens in an imaging device, the liquid lens comprising a liquid-liquid interface between first and second immiscible liquids deformable by electrowetting, a chamber containing the first and second liquids, the first liquid being an insulating liquid and the second liquid being a conducting liquid, and a first electrode in contact with said second liquid and at least one second electrode insulated from said second liquid by an insulating layer, said first and second electrodes being arranged to allow a plurality of voltage levels to be applied between said first and second electrodes to control the shape of said liquid-liquid interface, the method comprising: determining, using a motion detector, motion data representative of a movement of said imaging device; determining, using a focus determination block, focusing data representative of a desired focus of said imaging device; determining said plurality of voltage levels to be applied between said first and second electrodes; and applying said plurality of voltage levels between said first and second electrodes, wherein each of said plurality of applied voltage levels is a function of said motion data, said focusing data, and at least one parameter relating to the liquid lens, wherein said at least one parameter is preliminarily determined in a calibration phase.