Patent ID: 6208439
Filing Date: 2001-03-27
Classification: B23K,G02B,G03H,H05K

Abstract:
A method of generating from a subaperture on a plate a working image array for processing materials comprising the steps of:dividing the subaperture into a plurality of subaperture segments;providing subaperture segments which produce each working image of the working image array independent of all other subaperture segments present;dividing the working image into a corresponding plurality of working image segments, each working image segment having a centroid;mapping of each subaperture segments to the centroid of a corresponding working image segment;determining a phase mapping which best approximates a mapping of each subaperture segment onto the corresponding working image segment;determining a phase produced by the subaperture at the location of the desired working image; and,back propagating the desired working image using the phase as determined at the working image to adjust amplitude and phase of the subaperture so that it produces the desired working image.