Patent ID: 6107011
Filing Date: 2000-08-22
Classification: G03F,H01J,Y10S

Abstract:
A method of using a light source to transfer a principal image, carried on a primary mask, onto an image receiving surface, which comprises the steps of:(a) inserting a secondary mask between said source and said primary mask, said secondary mask comprising optical elements which perform the steps of:(i) directing light on to a plurality of exposure points on said primary mask, said plurality of points being separated by a pre-determined distance; and(ii) imagewise illuminating and exposing a corresponding plurality of exposure points on said image receiving surface, said corresponding plurality of exposure points being sufficiently separated to reduce interaction between adjacent exposure points on said image receiving surface; and(b) exposing substantially all of said principal image on said image receiving surface by creating relative motion between said primary mask and said secondary mask, such that said plurality of exposure points is scanned over substantially all of said principal image carried on said primary mask.