Stigmatic縮小像をうる三群四極子レンズ特性
1971 年 40 巻 7 号 p. 756-757
詳細
1971 年 40 巻 7 号 p. 756-757
Methods are proposed for forming stigmatic images with as large a demagnification as possible by a three element quadrupole lens system, without increasing the ratio of the object and image distances. Their paraxial focusing characteristics are calculated based on a rectangular field model. Astigmatic virtual images are formed by an incident quadrupole singlet within the lens. A real stigmatic image of the virtual ones can be formed at a desired image distance by a quadrupole doublet behind the lens without changing the object distance or the construction of the lens system.
