Patent ID: 8797501
Filing Date: 2014-08-05
Classification: G03B,G03F

Abstract:
1. An exposure apparatus which projects a pattern of an original onto a substrate by a projection optical system within a chamber to expose the substrate, comprising: a measurement unit configured to perform measurement to calculate a deformation amount of the original; and a controller configured to calculate a predicted deformation amount βre of the original and to correct a projection magnification of the projection optical system so as to correct the predicted deformation amount, based on (a) a function βr(t) which indicates the deformation amount of the original with reference to a shape of the original at a certain temperature, the function βr(t) being a function of a time t during which the original receives exposure light, (b) a deformation amount βr wherein the controller calculates the predicted deformation amount βre of the original in accordance with the equation βre=βr(t+t wherein t