Problems in current electro-holographic displays

The problems involved with the currently available display devices for electro-holography are induced by the regularity of pixel patterns in these devices. The diffraction patterns induced from the pixel patterns are decreasing the diffraction efficiency of the devices and limiting the image space of the reconstructed image. Added on this diffraction pattern, the regularity of fringe pattern also induces another diffraction pattern which works as an inherent noise in these devices and the display surface accompanied with the reconstructed image. Furthermore, lasers used in these devices can also introduce displayable spectral range reduction and a potential danger to the viewers as the brightness level increases.