Patent ID: 8139104

Claim:
Display device, comprising an imaging layer with a plurality of picture elements and a lens layer comprising a plurality of lens elements for projecting light from different picture elements in the imaging layer to the left and right eyes of a user in order to provide an autostereoscopic effect, wherein each lens element comprises at least one lens cell which defines a closed space, having a front wall, facing the user, a back wall facing the imaging layer and side walls, connecting the back and front walls, wherein the side walls of each lens cell comprise at least a first and a second-individually controllable electrode, the closed space being filled with first and second immiscible fluids having different refractive indices, each cell comprising means for varying the radius of curvature and/or tilt of the interface between the first and second fluids, the first and second fluids serving to refract incident light such that the lens cell functions as a positive lens having a spherical shape via controllable contact angles with the side walls of the lens cell by varying said first and second individually controllable electrodes voltage potentials on said side wall electrodes, the display device comprises a tracking device for determining the position of a users head, and controlling means for controlling potentials of said first and second electrodes based on said position.