title: Aplanatic optical system containing two aspheric surfaces.
abstract: The design of an aplanatic optical system with two aspheric surfaces according to a method developed by Vaskas is treated in more detail. The shape of each aspheric surface is determined by a differential equation. It is shown that the ray trajectories through the optical surfaces, located between the two aspheres, are found by solving a system of N linear equations where N is the number of intermediate surfaces. An example of an aspherized aplanatic system is given.
authors.forename: J J
authors.initials: JJ
authors.lastname: Braat
authors.forename: P F
authors.initials: PF
authors.lastname: Greve