Abstract:
PROBLEM TO BE SOLVED: To provide a lithographic apparatus having a uniform radiation intensity profile. SOLUTION: A lithographic apparatus comprises: an illumination system configured to condition a radiation beam; a support formed to support a patterning device formed to impart a cross-sectional pattern to the radiation beam to form a patterned radiation beam; a substrate table formed to hold a substrate; and a projection system configured to project the patterned radiation beam onto an elongate target portion of the substrate. A uniformity controller is configured to control the profile of the radiation intensity along the length of the target portion of the substrate, thereby substantially compensating for radiation-induced variation of the profile with respect to time. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a measurement/control apparatus capable of solving one or more problems related to use of an array of individually controllable elements, and/or a method related thereto. SOLUTION: This method of controlling this measurement apparatus for determining a property of an individually controllable element of an array of individually controllable elements, the array of individually controllable elements being capable of controlling a distribution of a beam of radiation, is disclosed. The method includes steps of, for a sequence of a plurality of individually controllable elements: guiding a measurement beam of radiation at an individually controllable element of the plurality of individually controllable elements; and detecting the measurement beam once it has been re-guided by the individually controllable element, wherein the sequence in which the method is undertaken for the plurality of individually controllable elements is related to the orientation of the plurality of individually controllable elements when the plurality of individually controllable elements are oriented to control a distribution of a beam of radiation. COPYRIGHT: (C)2010,JPO&INPIT