METHOD AND APPARATUS FOR RETRIEVING A PHASE OF A WAVEFIELD
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United States of America Patent
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Issued Date -
Jul 12, 2012
app pub date -
Sep 10, 2010
filing date -
Sep 15, 2009
priority date (Note) -
Abandoned
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Abstract
A method of retrieving a phase of a wavefield comprising the steps of: providing an estimate of the wavefield φ0 at an initial plane; and propagating the wavefield to and fro between an entrance plane being a plane having an area to which the wavefield is confined and a detector plane via a wavefield transform device, wherein at the entrance plane a support constraint is applied and at the detector plane a magnitude constraint is applied, the wavefield transform device being arranged to apply a wavefield transform function to the wavefield, wherein the wavefield transform function is characterised by a finite deviation from a lens function.
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