Patent ID: 6330052
Filing Date: 2001-12-11
Classification: G03F

Abstract:
An exposure apparatus, which comprises a projection optical system for forming an image of a pattern formed on a master plate, a substrate stage for holding and moving a substrate to be exposed to an imaging position, position measurement means for measuring a position of the master plate or substrate or relative positions of the master plate and substrate, alignment means for moving the master plate or substrate on the basis of a measurement value of said position measurement means to adjust the position or relative positions, a main body structure for holding said projection optical system, said substrate stage, and said position measurement means, and a support base for supporting said main body structure, said apparatus comprising:measurement means for measuring (i) a variation amount of a principal force acting between said main body structure and said support base or (ii) a distortion resulting from a force acting on the main body structure by a vibration reduction device; andcorrection means for correcting a measurement value of said measurement means using a correction vector obtained by multiplying the measurement result of said measurement means by a predetermined coefficient matrix.