Patent ID: 9013675
Filing Date: 2015-04-21
Classification: G03F

Abstract:
1. An immersion exposure apparatus comprising: an optical member comprising an exit surface from which light exits, the exit surface being in contact with a liquid, the liquid being disposed in at least a space between the exit surface and a movable object; a liquid contact surface facing the movable object; a liquid recovery surface surrounding the liquid contact surface and comprising a suction region via which the liquid is suctioned; a first surface facing the movable object, at least a part of the first surface being disposed between the liquid recovery surface and the movable object; a second surface being disposed between the liquid recovery surface and the first surface, at least a part of the second surface facing the liquid recovery surface; and a gap into which the liquid flows via an opening between the liquid recovery surface and the second surface, wherein the liquid recovery surface is configured to recover the liquid that flows into the gap.