Patent ID: 7990519
Filing Date: 2011-08-02
Classification: G01B,G03B,G03F

Abstract:
1. An exposure apparatus which projects a pattern of an original onto a substrate using a projection optical system, the apparatus comprising: a substrate stage configured to hold the substrate; a detector configured to detect positions of marks on the substrate in a first direction and a second direction orthogonal to each other in a plane perpendicular to an optical-axis direction of the projection optical system; and a controller configured to control the detector to detect the position of a mark on the substrate while moving the substrate stage substantially along the first direction, and control the detector to detect the position of a mark on the substrate while moving the substrate stage substantially along the second direction, thereby controlling positioning and exposure of the substrate based on the detection results obtained by the detector, wherein the detector includes an image sensor, and the detector is configured to sense the mark on the substrate by the image sensor when the substrate stage is moving and to detect the position of the mark based on the sensed image.