title: Geometric characteristics of aberrations of plane-symmetric optical systems.
abstract: The geometric characteristics of aberrations of plane-symmetric optical systems are studied in detail with a wave-aberration theory. It is dealt with as an extension of the Seidel aberrations to realize a consistent aberration theory from axially symmetric to plane-symmetric systems. The aberration distribution is analyzed with the spot diagram of a ray and an aberration curve. Moreover, the root-mean-square value and the centroid of aberration distribution are discussed. The numerical results are obtained with the focusing optics of a toroidal mirror at grazing incidence.
authors.affiliation: Department of Fine Mechanical Engineering, Shanghai University, Shanghai 200072, China. lulijun@shu.edu.cn
authors.forename: Li-Jun
authors.initials: LJ
authors.lastname: Lu
authors.forename: Zhi-Yong
authors.initials: ZY
authors.lastname: Deng