Hologram Coupling into a Waveguide
AssigneeEnvisics Ltd
InventorAlexander Cole
Life of this patent
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Abstract
A holographic projection system includes a display arrangement. The display arrangement includes a display area arranged to display a first hologram of a first picture and to spatially modulate light incident thereon in accordance with the first hologram to form a holographic wavefront. The system further includes an optical system arranged to receive the holographic wavefront and form a relayed image of the first hologram. The system further includes a waveguide that includes an input port arranged to receive the holographic wavefront and a pair of surfaces arranged to waveguide the holographic wavefront therebetween. A plane of the display area is angled such that the relayed image of the first hologram is formed at a first plane, the first plane being parallel with a plane of the input port.
Claims14
A holographic projection system comprising:
- a display arrangement comprising a display area arranged to display a first hologram of a first picture and to spatially modulate light incident thereon in accordance with the first hologram to form a holographic wavefront;
- an optical system arranged to receive the holographic wavefront and form a relayed image of the first hologram;
- and
- a waveguide comprising an input port arranged to receive the holographic wavefront and a pair of surfaces arranged to waveguide the holographic wavefront therebetween;
- wherein a plane of the display area is angled such that the relayed image of the first hologram is formed at a first plane, the first plane being parallel with a plane of the input port,
- wherein a tilt of the display area opposes that of the relayed image of the hologram.
A method of holographic projection, the method comprising:
- spatially modulating light in accordance with a first hologram to form a holographic wavefront;
- receiving the holographic wavefront at an optical system so as to form a relayed image of the first hologram;
- and then
- receiving the holographic wavefront at the input port of a waveguide, wherein the waveguide comprises a pair of surface such that the received holographic wavefront is waveguided therebetween;
- wherein the first hologram is positioned at a first plane, the first plane being co-planar with a plane of the input port, and
- wherein a plane of the display area is non-parallel with a plane of the first plane.
Dependencies are inferred from the claim text.