Patent ID: 6236448
Filing Date: 2001-05-22
Classification: G03F

Abstract:
A scanning exposure apparatus in which a first object and a second object are moved synchronously for scanning exposure, the apparatus comprising:a projection system to be disposed between the first object and the second object, which projects an image of a pattern formed on the first object onto the second object to be provided on one side thereof;a first movable member, at least part of the first movable member being disposed on the other side of the projection system, which holds the first object;a second movable member, at least part of the second movable member being disposed on the one side of the projection system, which holds the second object, wherein the first movable member and the second movable member move at different velocities during the scanning exposure;a first reference member which is arranged on the first movable member which is different from the first object; anda detecting system, functionally associated with the first movable member, which detects a reference mark of the first reference member, wherein the first movable member is positioned at a position which is different from a scanning start position so that the reference mark is detected by the detecting system.