Patent ID: 7791711
Filing Date: 2010-09-07
Classification: G02B,G03F

Abstract:
1. A process for producing at least one of semiconductor components and other finely structured components comprising: providing a projection objective having a mirror that is located within a predetermined proximity to a pupil surface of the projection objective; providing a mask with a predefined pattern in the region of an object plane of the projection objective; illuminating the mask with light of a predefined wavelength; projecting an image of the pattern onto a light-sensitive substrate arranged in a region of an image plane of the projection objective optically conjugated to the object plane; wherein the projection comprises multiple exposures of the substrate, where a first pupil filter function is set on the mirror during a first exposure and, during a subsequent second exposure, a different, second pupil filter function is set by local changes of geometric reflective properties of the mirror in a locally resolving manner.