Patent ID: 8120750

Claim:
An exposure apparatus which projects a pattern on a reticle onto a substrate via a projection optical system and scanning-exposes the substrate, the apparatus comprising: a driving mechanism configured to drive a substrate stage holding the substrate in a horizontal direction and a vertical direction in each of a first area and a second area; a first measurement device configured to measure a position of the substrate in the vertical direction at a plurality of measurement points in the first area; and a controller, wherein when the substrate stage is located in the first area, said controller causes said first measurement device to measure the same portion of the substrate at the plurality of measurement points both before and after the substrate stage is driven in the horizontal direction, calculates a first difference of the substrate stage in the vertical direction in the first area accompanying driving of the substrate stage in the horizontal direction, based on a first measurement result obtained by using said first measurement device, calculates a numerical value representing a surface shape of the substrate by subtracting the first difference from the first measurement result, calculates a second difference of the substrate stage in the vertical direction in the second area accompanying driving of the substrate stage in the horizontal direction by subtracting the numerical value associated with the surface shape of the substrate from a numerical value representing a position of the substrate in the vertical direction when the substrate stage is located in the second area, and controls a position of the substrate stage in the vertical direction in the second area based on the second difference.