Patent ID: 9104115
Filing Date: 2015-08-11
Classification: G03F

Abstract:
1. A method for controlling an exposure slit of an exposure apparatus, comprising: calculating a shift from a target value of an illuminance distribution on a reticle of light irradiated onto the reticle, the calculating being based on a relational expression and a measured value of an illuminance distribution on a wafer of light irradiated onto the wafer via a projection optical system, the relational expression having a correlation between the illuminance distribution on the reticle, the illuminance distribution on the wafer, and a spread function reflecting a characteristic of the projection optical system projecting light obtained by way of the reticle onto the wafer, wherein the illuminance distribution of the light on the wafer in the relational expression is expressed as a convolution of the illuminance distribution of the light on the reticle and the spread function, and the interval of integration of the convolution is a width in a longitudinal direction of the exposure slit configured to pass the light from a light source toward the reticle.