Patent ID: 6545284
Filing Date: 2003-04-08
Classification: G03F

Abstract:
A method of exposing a substrate by projecting onto said substrate a pattern image formed on a mask, comprising steps of:irradiating measurement beams onto a plurality of places on a substrate, wherein said measurement beams include at least one first measurement beam and a plurality of second measurement beams, and at least one of a shape and a size of said first measurement beams on a surface of the substrate is smaller than that of the second measurements beams; detecting said plurality of measurement beams from said substrate; and adjusting a relative position of the pattern image projected and said substrate so as to dispose the surface of the substrate at the position of the pattern image projected based on a detection result of the first measurement beam, and adjusting an inclination of the surface of the substrate with respect to the pattern image projected based on a detection result of at least said second measurement beams.