Patent ID: 7936520
Filing Date: 2011-05-03
Classification: G02B

Abstract:
1. An optical axis orientating device for a liquid lens comprising a sealing liquid and a lens liquid, said optical axis orientating device comprising: a transparent substrate having an upper surface; a symmetric electrode structure formed on the upper surface of the substrate, capable of supplying an electric field, and defining thereof a central axis; and an insulating layer, formed on the upper surface of the substrate, the insulating layer thereof providing an optical axis orientating structure symmetric with respect to the central axis of the electrode structure, wherein the lens liquid is disposed on the optical axis orientating structure, the optical axis orientating structure being a platform having a step with an edge and covering a part of the upper surface of the substrate, and the sealing liquid is filled within said liquid lens, wherein the edge of the platform prevents the lens liquid from spreading out of the step onto the uncovered part of the upper surface of the substrate; whereby at a rest state, an optical axis of the liquid lens and the central axis of the electrode structure are substantially coaxial.