Patent ID: 6342943
Filing Date: 2002-01-29
Classification: G03F

Abstract:
An exposure apparatus which exposes a pattern of a mask onto a substrate, said apparatus comprising:a plurality of projection optical systems disposed between said mask and said substrate to project said pattern onto said substrate; a substrate stage which supports said substrate, said substrate stage including a first plurality of reference marks; a mask stage which supports said mask including a second plurality of reference marks which is integrally formed with said mask pattern, said mask stage positioning said mask such that images of said second plurality reference marks projected by at least one of said projection optical systems correspond to said first plurality reference marks; a plurality of sensors which detect a positional relationship between said images of said second plurality reference marks and said first plurality reference marks; and an adjustment system connected to said plurality of sensors to adjust at least one of said plurality of projection optical systems in accordance with said positional relationships, said adjustment system adjusting an imaging error including an error of said mask and an error of at least one of said projection optical system.