Patent ID: 7986396

Claim:
An exposure apparatus comprising: a projection optical system configured to project a pattern image of an original onto a substrate; an original stage configured to hold and drive the original; a substrate stage configured to hold and drive the substrate; and a position detecting system including a plurality of photoelectric conversion elements configured to detect the relative position between position detection marks formed on the original or the original stage and fiducial marks formed on the substrate stage, wherein the relative position is a position in a direction perpendicular to an optical axis of the projection optical system, wherein the position detection marks form a plurality of mark groups arranged along a first direction, each of the plurality of mark groups including a first mark for measuring the position in the first direction and a second mark for measuring the position in a second direction perpendicular to the first direction, and the first mark and the second mark of each of the plurality of mark groups are arranged along the first direction, and wherein the plurality of photoelectric conversion elements simultaneously detect a plurality of marks from the plurality of mark groups such that only one mark is detected from each of the mark groups, and two first marks with the largest distance therebetween are detected from a plurality of the first marks in a first case and two second marks with the largest distance therebetween are detected from a plurality of the second marks in a second case.