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US 11,953,683 B2Granted
Display device, in particular a head-mounted display, based on temporal and spatial multiplexing of hologram tiles
AssigneeSeeReal Technologies S.A.
InventorGerald Futterer
Life of this patent
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Abstract
The invention relates to a display device, in particular a head-mounted display or hocular, having a spatial light modulator and a controllable light-deflecting device for generating a multiple image of the spatial light modulator, which consists of segments, the multiple image being produced at least with a predefinable number of segments which determines the size of a visible area within which a 3D-scene holographically encoded in the spatial light modulator can be reconstructed for observation by an eye of an observer.
Claims17
A virtual image device comprising:
- an illumination device and a spatial light modulator configured to output light
- an optical system configured to receive the light from the spatial light modulator and to generate a virtual image,
- at least two diffraction gratings positioned proximate the optical system to increase a field of view of the virtual image,
- the at least two diffraction gratings are crossed in their direction of deflection.
1 more element
A head-mounted display device comprising:
- a position detector configured to detect a position of a pupil and a position of a further pupil of a wearer of the head-mounted display device;
- an illumination device and a spatial light modulator configured to inject light into a wave guide to generate a virtual image based on the position of the pupil;
- a further illumination device and a further spatial light modulator configured to inject light into a further wave guide to generate a further virtual image based on the position of the further pupil;
- at least two diffraction gratings, crossed in their direction of deflection, comprising:
- a diffraction grating configured to increase a horizontal field of view of the virtual images;
- and
- a further diffraction grating configured to increase a vertical field of view of the virtual images.
4 more elements
Dependencies are inferred from the claim text.