Patent ID: 8294874

Claim:
An exposure apparatus configured to expose a plurality of areas on an original onto a substrate by synchronously scanning the original and the substrate, the exposure apparatus comprising a plurality of projection optical systems each having an imaging magnification of an equal enlargement or reduction, and each projection optical system forming an intermediate image of the pattern of the original and projecting an erect image of the pattern of the original onto the substrate, wherein each projection optical system includes: a plurality of mirrors configured to form an optical-axis shift vector that has a start point that is a point on the substrate at which an optical axis of the projection optical system on an original side intersects with the substrate, and an end point that is a point on the substrate at which an optical axis of the projection optical system on a substrate side intersects with the substrate; and a movement unit configured to move the plurality of mirrors so that the optical-axis shift vector has a component in a direction orthogonal to a scanning direction which enables adjacent areas in the plurality of areas on the original to adjoin each other in the direction orthogonal to the scanning direction and enables adjacent areas in the plurality of areas on the substrate to adjoin each other in the direction orthogonal to the scanning direction, and configured to move the plurality of mirrors so that the optical-axis shift vector has a component in a scanning direction which enables a product between the imaging magnification of each projection optical system and a distance between centers of two areas on the original in the scanning direction corresponding to two adjacent projection optical systems in the plurality of projection optical systems to be equal to a distance between centers of two areas on the substrate in the scanning direction corresponding to the two adjacent projection optical systems, wherein a first projection optical system among the plurality of projection optical systems includes an imaging optical system having an optical axis orthogonal to the optical axis on the original side and the optical axis on the substrate side, and wherein in the first projection optical system the optical-axis shift vector is changed without changing an optical path length of the first projection optical system by moving the imaging optical system and at least one of the plurality of mirrors in a direction of the optical axis of the imaging optical system.