Patent ID: 6639651
Filing Date: 2003-10-28
Classification: G03B,G03F

Abstract:
A fabrication method for a correcting member for correcting residual aberration in a projection optical system that projects an image of a first surface onto a second surface, the fabrication method comprising:a measurement step of measuring aberration remaining in the projection optical system; a hypothesis step of hypothesizing a corrected surface form to be provided to the correcting member based on predetermined functions; a calculation step of calculating wavefront information of a light beam which passes through each of a plurality of regions on the correcting member having the corrected surface form hypothesized in the hypothesis step; and an evaluation step of evaluating the remaining aberration in the projection optical system when the hypothesized corrected surface form hypothesized in the hypothesis step is provided to the correcting member based on the measurement result in the measurement step and on the wavefront information calculated in the calculation step.