Patent ID: 8355209
Filing Date: 2013-01-15
Classification: G02B

Abstract:
1. A liquid lens in which, in a container that contains a liquid, an insulating first liquid and a conductive second liquid having non-miscibility and different refractive indexes to each other are contained, wherein optical characteristics are changed by a change of an interface shape of the first liquid and the second liquid caused by application of a voltage to an electrode provided in the container, the liquid lens comprising: in a surface in contact with an edge of an interface of the first liquid and the second liquid, a first region having an affinity for the first liquid; a second region having an affinity different from the affinity for the first liquids; and a voltage applying unit, wherein a plurality of the first regions and a plurality of the second regions are formed in a concentric pattern with the center of the pattern as a position of an optical axis of the lens, and wherein the voltage applying unit applies the voltage such that the edge of the interface of the first liquid and the second liquid is located at one of borders of the first regions and the second regions.