Holography device

A method for processing a holographic wavefront, the method comprising:

• directing the holographic wavefront along a first plane to an input side of a holographic wavefront splitter;
• dividing the holographic wavefront at the holographic wavefront splitter, into first and second portions;
• directing the first portion of the holographic wavefront away from the first plane in a first direction;
• directing the second portion of the holographic wavefront away from the first plane in a second direction substantially opposite to the first direction;
• and
• nullifying a third portion of the holographic wavefront, wherein said third portion is located between the first portion and the second portion;
• wherein the method further comprises:
• receiving the first portion at a first receiving surface and rerouting it in a direction substantially parallel to the first plane;
• receiving the second portion at a second receiving surface and rerouting it in a direction substantially parallel to the first plane;
• separately directing each of the first and second portions of the holographic wavefront to an input side of a holographic wavefront recombiner, wherein said holographic wavefront recombiner is located between the holographic wavefront splitter and a viewing plane of an image formed from the holographic wavefront, and
• recombining the first and second portions to one another at an output side of the holographic wavefront recombiner, to form the processed holographic wavefront.

A device for processing a holographic wavefront, the device comprising:

• an optical assembly comprising one or more optical elements, the optical assembly being arranged to:
• receive, at an input side, a holographic wavefront along a first plane;
• divide the holographic wavefront into first and second portions;
• and
• relay the first and second portions to an output side such that a processed holographic wavefront is formed;
• wherein the input side comprises:
• a first surface arranged to receive the first portion of the holographic wavefront;
• a second surface arranged to receive the second portion of the holographic wavefront;
• and
• a discontinuity between the first surface and second surface, wherein said discontinuity is arranged to receive and to nullify a third portion of the holographic wavefront, wherein said third portion is located between the first portion and the second portion;
• wherein the optical assembly is arranged such that the first portion of the holographic wavefront is directed away from the first plane at the first surface of the input side in a first direction and the second portion of the holographic wavefront is directed away from the first plane at the second surface of the input side in second direction that is different to the first direction;
• and
• wherein the optical assembly is arranged such that the first portion and the second portion of the holographic wavefront are recombined at the output side to form the processed holographic wavefront.

A method of processing a holographic wavefront, the method comprising:

• directing the holographic wavefront along a first plane to an input side of an optical assembly;
• dividing the holographic wavefront into first and second portions;
• directing the first portion of the holographic wavefront away from the first plane in a first direction;
• directing the second portion of the holographic wavefront away from the first plane in a second direction different to the first direction;
• nullifying a third portion of the holographic wavefront, wherein said third portion is located between the first portion and the second portion;
• and
• recombining the first and second portions to one another to form the processed holographic wavefront at an output side of the optical assembly.