Patent ID: 7710634

Claim:
An apparatus for creating a pattern on a workpiece sensitive to light radiation, the apparatus comprising: a source for emitting electromagnetic radiation in a wavelength range from EUV to to IR; a spatial light modulator (SLM) having a plurality of modulating elements operable for being illuminated by said radiation; a projection system for creating an image of the modulator on the workpiece; an electronic data processing and delivery system for receiving a digital description of the pattern, converting said pattern to modulator signals, and sending said signals to the modulator; a precision mechanical system for positioning at least one of said workpiece and said projection system relative to each other; and an electronic control system controlling the position of the workpiece, such that said pattern is printed on the workpiece; wherein the input pattern description is converted to modulator voltages for particular modulating elements to correct for variation among modulating elements using a lookup memory.