Patent ID: 6813002
Filing Date: 2004-11-02
Classification: G03F,Y10S

Abstract:
An exposure apparatus which transfers a pattern of a reflection type mask onto a substrate, comprising:an illumination system including a light source generating an EUV light and which irradiates said reflection type mask with said EUV light; a projection optical system arranged between said reflection type mask and said substrate and which projects said EUV light from said reflection type mask onto said substrate, said projection optical system being made up of only a plurality of reflection optical elements and beina non-telecentric on said mask side; a magnification changing unit which changes a projection magnification of an image projected through said projection optical system by driving said reflection type mask into a direction perpendicular to a pattern plane of the mask; a substrate stage which holds said substrate; a mark detection system including a photoelectric device and which detects a mark located on said substrate stage; and a correction unit electrically connected to said magnification changing unit and said mark detection system and which corrects a shift of a projection position of a pattern on said mask after a magnification change using a baseline of said mark detection system on transferring said pattern of said mask onto said substrate, said baseline being obtained in consideration of said shift when said magnification change is made by said magnification changing unit.