Video hologram and device for reconstructing video holograms for large objects

A display device for video holography, in which the device enables a holographic reconstruction of a three dimensional scene to be generated;

• the device including a light source and an optical system to illuminate a hologram-bearing medium encoded with a hologram, the optical system imaging the light source into an image plane of the light source;
• wherein the device is adapted such that the reconstructed three dimensional scene is generatable anywhere within a volume defined by the physical boundary provided by the hologram-bearing medium and a virtual observer window through which the reconstructed three dimensional scene must be viewed wherein the virtual observer window is located approximately at the image plane of the light source and wherein the virtual observer window is the location where an observer places at least one eye to view the holographic reconstruction representing the three-dimensional scene.