Patent ID: 8379079
Filing Date: 2013-02-19
Classification: G03H

Abstract:
1. A holographic reconstruction system for holographically reconstructing object elements of a scene, which system modulates at least one light wave field capable of generating interference with a sequence of video holograms, with the help of a discretely encodable cell structure of modulator cells of spatial light modulator means, said system comprising: hologram processor means for: assigning each object element of the scene with a discrete hologram region on the cell structure, whose extent and position depend on position information of the object element in the scene; and computing a code for each hologram region such that each hologram region on the cell structure modulates a partial light wave of the light wave field, and that each modulated partial light wave separately reconstructs the object element assigned to it and then propagates in the form of a light wave cone towards a visibility region; and position controller means for: directing the modulated partial light waves at at least one current eye position of an observer; and tracking it to a changing eye position when the observer moves, so that the fully reconstructed scene is visible in the visibility region for the current eye position; wherein the hologram processor means uses position information of the current eye position to adapt the extent and position of the hologram regions to the current eye position, and to compute the code such that each modulated partial light wave is directed to the current eye position, without light of parasitic diffraction orders entering a used diffraction order.