A Method of Solving the Initial Structure of a Three-thin-lens Null Corrector

Three-thin-lens null corrector is generally made up of three singlets, which can be used to correct aberration caused by other optical components. Based on third-order aberration theory, the aberration characteristics of the three-thin-lens corrector are analyzed, and a method to solve the initial structure of the corrector and the corresponding formulae is given. These formulae are proven to be correct through a practical example.