Patent ID: 8035804
Filing Date: 2011-10-11
Classification: G03B,G03F

Abstract:
1. A scanning exposure apparatus which exposes a substrate, the apparatus comprising: an illumination system configured to illuminate an illumination region of an original; a projection optical system configured to project a pattern of the original onto the substrate; and a stop configured to shield a flare generating component of flare light which travels from the projection optical system to the substrate, and to pass the remaining component of the flare light, wherein an aperture of said stop has a shape different from a shape of the illumination region, wherein said aperture of said stop includes a portion whose dimension in a first direction parallel to a scanning direction of the substrate changes in accordance with a distance from the center of said aperture in a second direction perpendicular to the first direction and said aperture of said stop does not include a side parallel to the scanning direction, and wherein flare light reaches a first shot region upon exposing a second shot region that is an adjacent shot region on one side of the first shot region and flare light reaches the first shot region upon exposing a third shot region that is an adjacent shot region on the other side of the first shot region, and a distribution of the sum of amounts of the flare lights that reach the first shot region through the exposure of the second and third shot regions is flat.