You accurately describe properties of a fairly narrow class of holographic displays. There's a larger class of display types out there. For example: White li

You accurately describe properties of a fairly narrow class of holographic displays. There's a larger class of display types out there. For example: White light transmission holograms (Benton or rainbow holograms), invented in the 1970s, work by eliminating vertical parallax. Holographic stereograms relax the requirement for recording the subject in coherent light, but may use holography for the output display device. Recent advances in computation have allowed non-optical generation of diffractive structures that produce a light field when illuminated (something this research partially covers). (Source: developed computer generated holographic stereograms and taught holography at Steve Benton's Spatial Imaging Group at the MIT Media Lab).