Patent ID: 7583356

Claim:
An exposure apparatus configured to expose a substrate to light, the apparatus comprising: a stage configured to hold the substrate and to be moved; a projection optical system configured to project light from an original plate onto the substrate held by the stage; a measurement device configured to measure a position of a surface of the substrate in a direction of an optical axis of the projection optical system; and a controller configured to concurrently control a scan of the stage in a scanning direction perpendicular to the direction of the optical axis, a measurement of the position of the surface in a shot area on the substrate by the measurement device, a movement of the stage according to the measured position of the surface, and an exposure of the shot area, wherein the controller is further configured to i) cause the measurement device to measure positions of the surface with respect to a plurality of points on the surface over a plurality of shot areas on the substrate, ii) obtain a shape of the surface based on the positions of the surface measured with respect to the plurality of points, and iii) cause the stage to be moved based on the obtained shape between an exposure of a first shot area on the substrate and an exposure of a second shot area on the substrate, and the measurement device to measure a position of a surface in the second shot area.