The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 27, 2022
Filed:
Aug. 22, 2019
Dualitas Ltd, Milton Keynes, GB;
Neil Collings, Milton Keynes, GB;
Jamieson Christmas, Milton Keynes, GB;
DUALITAS LTD, Milton Keynes, GB;
Abstract
A method of calculating a hologram having an amplitude and a phase component. The method comprises (i) receiving an input image comprising a plurality of data values representing amplitude. The method then comprises (ii) assigning a random phase value to each data value of the plurality of data values to form a complex data set. The method then comprises (iii) performing an inverse Fourier transform of the complex data set. The method then comprises (iv) constraining each complex data value (X, X) of the transformed complex data set to one of a plurality of allowable complex data values (GL-GL), each comprising an amplitude modulation value and a phase modulation value, to form a hologram, wherein, the phase modulation values (GL-GL) of the plurality of allowable complex data values substantially span at least 3π/2 and at least one of the allowable complex data values has an amplitude modulation value of substantially zero (GL) and a phase modulation value of substantially zero.