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.
© 1979 Optical Society of America
J. J. M. Braat and P. F. Greve, "Aplanatic optical system containing two aspheric surfaces," Appl. Opt. 18, 2187-2191 (1979)