A technique is described for accurately modeling a class of two-mirror aplanatic systems on the commercial ACCOSV program. The differential equations that define the mirror profiles are solved numerically. For each surface, an approximate representation in terms of vertex radii, aspheric coefficients, and axial separation is then obtained by matching a polynomial exactly to the surface at discrete points. The residual difference between the polynomial and the true surface is then computed at several points. These differences are input as spline function values. The superposition of polynomial and spline function gives a close approximation to the true surface. This process is embodied in a computer program that performs the required computations and writes a lens input file for ACCOSV.

Date Published: 10 June 1987
PDF: 10 pages
Proc. SPIE 0766, Recent Trends in Optical Systems Design and Computer Lens Design Workshop, (10 June 1987); doi: 10.1117/12.940214

Published in SPIE Proceedings Vol. 0766:
Recent Trends in Optical Systems Design and Computer Lens Design Workshop
Robert E. Fischer; Carmina Londono, Editor(s)