Patent ID: 8321815

Claim:
A non-transitory computer-readable recording medium storing an original data generation program for causing a computer to calculate data of an original to be used when an image of a pattern of the original is projected onto a substrate through a projection optical system by illuminating the original with an illumination device, the original data generation program comprising: computer-executable instructions for setting an intended pattern to be formed on the substrate; computer-executable instructions for converting data regarding the intended pattern into frequency-domain data; computer-executable instructions for calculating a two-dimensional transmission cross coefficient using a function representing a light intensity distribution that the illumination device forms on a pupil plane of the projection optical system when the original is absent on an object plane of the projection optical system and using a pupil function of the projection optical system; computer-executable instructions for calculating a diffracted light distribution from a pattern that is formed on the object plane using both the frequency-domain data and data of the calculated two-dimensional transmission cross coefficient; and computer-executable instructions for converting data of the calculated diffracted light distribution into spatial-domain data and determining the data of the original using the spatial-domain data.