Patent ID: 7982852

Claim:
A scanning exposure apparatus having a projection optical system and configured to perform a scanning exposure that is an exposure of a substrate to a pattern of an original through the projection optical system while scanning of the original and the substrate in a scanning direction across an optical axis of the projection optical system is performed, the apparatus comprising: a substrate stage configured to hold the substrate and to be moved; a measurement system configured to measure a position of the substrate in a direction of the optical-axis; and a controller configured to control a position of the substrate stage in the direction of the optical axis based on the position measured by the measurement system while the scanning is performed, wherein the controller is configured to perform an acceleration of the substrate stage in the scanning direction up to a starting position where the scanning exposure of a first shot area on the substrate starts, and in to control, during a period of the acceleration, the position of the substrate stage in the direction of the optical axis based on a position of a measurement point in a second shot area, which has been subjected to the scanning exposure, measured by the measurement system previously with the substrate stage scanned at a constant speed.