Optimum diffusion condition in the fabrication of a plastic lenslike medium

Abstract
The optimum fabrication condition has been found in the preparation of a plastic lenslike medium which has a parabolic dielectric constant distribution. The maximum possible value of the focusing constant g=0.21 mm−1 was obtained for diallyl isophthalate–methylmethacrylate combination with a rod radius r0=1.5 mm.