Design of Imaging Lens Systems that Use Low Dispersive Radial Gradient-Index Rod

Abstract

Many effective lens design examples using gradient-index (GRIN) materials have been reported so far. However, the GRIN materials that were used in those designs are either very difficult or impossible to produce. We show an effective design and the design techniques of imaging lens systems that utilize realizable materials. The designed lens systems use flat-surfaced radial GRIN lens (Wood lens) with low dispersion, small Δn and small diameter.