Patent ID: 8130361
Filing Date: 2012-03-06
Classification: G03F

Abstract:
1. An exposure apparatus which exposes a substrate by projecting an image of a pattern onto the substrate through a liquid, the exposure apparatus comprising: a projection optical system which projects the image of the pattern onto the substrate; a substrate stage which is movable and which holds the substrate; a first detecting system which detects an alignment mark on the substrate held by the substrate stage and which detects a reference provided on the substrate stage; and a second detecting system which detects the reference provided on the substrate stage via the projection optical system, wherein: the reference includes a first reference and a second reference, and the first reference is detected not through the liquid by using the first detecting system and the second reference is detected via the projection optical system and the liquid by using the second detecting system to determine a positional relationship between a detection reference position of the first detecting system and a projection position of the image of the pattern.