Patent ID: 7403291

Claim:
An adjusting method for adjusting a target optical system, said adjusting method comprising the steps of: measuring a wavefront aberration in a first direction of the target optical system and a wavefront aberration in a second direction different from the first direction of the target optical system; calculating a first correction value and a second correction value based on a matrix equation assuming that a matrix that is made by adding a first correction value to each column of the first matrix is equal to a matrix that is made by adding a second correction value to each row of the second matrix, the first correction value being able to be different every column, the second correction value being able to be different every row, the first matrix representing the wavefront aberration in the first direction measured by said measuring step, and the second matrix representing the wavefront aberration in the second direction measured by said measuring step; obtaining a two-dimensional wavefront aberration of the target optical system by calculating the matrix that is made by adding the first correction value that has been calculated to the first matrix and/or the matrix that is made by adding the second correction value that has been calculated to the second matrix; and adjusting the target optical system based on the obtained two-dimensional wavefront aberration.