On the realization of constraint-free stereo television

Amongst various techniques proposed for realizing stereo television, stereoscopic techniques using color and polarization differences in communicating the stereo pair of 2D images call for special viewing aids to the viewer for 3D visualization and therefore these techniques do not yield permanent solution for TV. Volume scanning and volumetric display techniques and auto-stereoscopic methods do not impose any such constraints for depth perception. As an alternative to varifocal mirror technique this paper proposes a varifocal lens technique for realizing a constraint-free 3D TV. Also a proposal is made to extend the 3D display techniques performed with lenticular lens screen to realize a viable 3D TV. Furthermore, a modification is given to volume scanning and volumetric display as to make it more realistic and practical.