Holographic Reconstruction system with a Tracking Device for the Reconstruction
AssigneeSeeReal Technologies S.A.
InventorsBo Kroll, Armin Schwerdtner, Jean-Christophe Olaya
Life of this patent
Estimating the term…
Abstract
A holographic reconstruction system having spatial light modulators, an eye finder and a position control orients a propagating spatially modulated light wave field toward at least one eye position of an observer's eye, thereby reconstructing a scene in a three-dimensional manner and tracking the same during a position change of the eye position. Through Unobstructed lateral and axial movement of the observer head to arbitrary eye positions in a tracking region is enabled. The use of additional, planar optical components, which bring about optical aberrations during a position change of observer eyes, are prevented.
Claims16
Holographic reconstruction system for holographically reconstructing object elements of a scene which modulates at least one light wave field which is 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, further comprising:
- Hologram processor means, which assign 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 which compute a code for the hologram regions such that each hologram region on the cell structure modulates a partial light wave of the light wave field which is capable of generating interference, 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,
- Position controller means, which direct the modulated partial light waves at at least one current eye position and track it to a changing eye position when an observer moves, so that the fully reconstructed scene is visible in the visibility region for the observer eye,
- wherein the hologram processor means additionally consider the position information of the current eye positions in order
- to adapt the extent and position of the hologram regions to the current eye position, and
- to compute the code such that all partial light waves run to the current eye position, without light of parasitic diffraction orders entering the used diffraction order.
Dependencies are inferred from the claim text.