Display device and method for tracking a virtual visibility region
AssigneeSeeReal Technologies S.A.
InventorsNorbert Leister, Bo Kroll
Life of this patent
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Abstract
The invention relates to a display device for representing two-dimensional and/or three-dimensional scenes. The display device comprises at least one illumination device to emit sufficiently coherent light, at least one spatial light modulation device, at least one optical system and a tracking device. A hologram is encoded into the at least one spatial light modulation device by means of a single-parallax encoding. The at least one optical system is provided to generate at least one virtual visibility region at the position of an eye of an observer. The encoding direction of the hologram on the spatial light modulation device is modifiable by means of the tracking device.
Claims29
A display device for representing two-dimensional and/or three-dimensional scenes, comprising:
- at least one illumination device to emit sufficiently coherent light,
- at least one spatial light modulation device into which a hologram is encoded by means of a single-parallax encoding,
- at least one optical system, where the at least one optical system is provided to generate at least one virtual visibility region at the position of an eye of an observer, and
- a tracking device, where the encoding direction of the hologram on the spatial light modulation device is modifiable by means of the tracking device,
- wherein, while an eye of an observer remains located at a particular position, the encoding direction of the hologram is changeable between at least two non-coinciding directions and the encoding direction is switchable between the at least two directions based on the tracking device.
A method for representing two-dimensional and/or three-dimensional scenes by means of at least one illumination device to emit sufficiently coherent light, at least one spatial light modulation device, at least one optical system, a tracking device and a position detection system, comprising
- determining a position of an eye of an observer by the position detection system,
- determining a suitable encoding direction of a hologram on the at least one spatial light modulation device with the at least one optical system and the tracking device,
- encoding a hologram in the determined encoding direction into the at least one spatial light modulation device by means of a single-parallax encoding,
- illuminating the at least one spatial light modulation device by the at least one illumination device and reconstructing the hologram by the at least one optical system and generating at least one virtual visibility region at the position of the eye of an observer, and
- while an eye of an observer remains located at a particular position, changing the encoding direction of the hologram between at least two non-coinciding directions and the encoding direction is switchable between the at least two directions based on the tracking device.
Dependencies are inferred from the claim text.