ANALYSIS OF INHOMOGENEOUS OPTICAL-SYSTEMS BY THE USE OF RAY-TRACING -II - 3-DIMENSIONAL SYSTEMS WITH SYMMETRY

We describe a new approach to the index reconstruction of three-dimens ional optical systems with rotational symmetry, which is based on samp ling ray paths that lie in the sagittal plane. Since the observed rays are distorted by the optical system itself, they cannot be used direc tly for index reconstruction. We present an iterative procedure to com pute the true ray paths and then to find the index distribution. The u tility of the method is verified on the model problem. (C) 1998 Optica l Society of America.