Patent ID: 7872788
Filing Date: 2011-01-18
Classification: G02B,G03H

Abstract:
1. A method of digitally processing light waves passing through a planar structure having given functions f in (x, y, ω) and f out (x, y, ω) and consisting of a light-propagating and distributing layer, a plurality of interconnecting pattern elements of a holographic pattern in said of light-propagating and distributing layer, and a plurality of planar optical elements arranged in a predetermined pattern on the aforementioned light-propagating and distributing layer, the method comprising the steps of: calculating positions and shapes of the plurality of interconnecting pattern elements of a holographic pattern based on the aforementioned given functions f manufacturing the interconnecting pattern elements of the holographic pattern based on the results of the calculations; digitizing the aforementioned continuous functions by providing finite numbers (“n”, “m”, “u”, “v”) of values as a result of decomposition into the Fourier series; where k n , is the wave vector of an incoming wave, and r u is the distance from the incoming port number u to a current point; and k m , is the wave vector of an outgoing wave, and r v , is the distance from the outgoing port number v to a current point; and using the obtained digitized planar holographic pattern for converting the function f