Patent ID: 7933509
Filing Date: 2011-04-26
Classification: G03B

Abstract:
1. A camera-movement compensation device comprising: a first liquid-crystal cell having a pair of parallel transparent plates; a first voltage source coupled to the first liquid-crystal cell and able to apply and alter a first voltage gradient across the plates of the first liquid-crystal cell; a second liquid-crystal cell having a pair of parallel transparent plates and disposed so that each of the plates of the second liquid-crystal cell is parallel to the plates of the first liquid-crystal cell and in light communication with at least one wave of light passing through the plates of the first liquid-crystal cell and a rubbing direction of the pair of transparent plates of the first liquid-crystal cell is orthogonal to a rubbing direction of the pair of transparent plates of the second liquid-crystal cell; a second voltage source coupled to the second liquid-crystal cell and able to apply and alter a second voltage gradient across the surfaces of the second liquid-crystal cell; and a movement and orientation detector communicatively coupled to the first and second voltage sources, wherein the first voltage source alters a slope of the first voltage gradient in proportion to a movement sensed by the detector and the second voltage source alters a slope of the second voltage gradient in proportion to a movement sensed by the detector.