Patent ID: 7110116
Filing Date: 2006-09-19
Classification: G03F

Abstract:
1. An exposure apparatus for performing exposure using exposure light, said apparatus employing a reticle holding mechanism for holding a reticle, a substrate holding mechanism for holding a substrate to be exposed, and a projection optical system for projecting a pattern of the reticle onto the substrate to thereby expose the substrate to the pattern, said exposure apparatus comprising: a first position detection unit for detecting a position reference of said reticle holding mechanism; a second position detection unit for detecting a position reference of said substrate holding mechanism; and a third position detection unit for detecting both the position reference of said reticle holding mechanism and the position reference of said substrate holding mechanism via said projection optical system, a baseline on the side of said reticle holding mechanism being found from results of detection by said first and third position detection units, a baseline on the side of said substrate holding mechanism being found from results of detection by said second and third position detection units, and relative positions of said reticle holding mechanism and said substrate holding mechanism being controlled using said first and second position detection units upon taking both of said baselines into consideration.