ABSTRACT
The necessity of obtaining higher quality and functionality in optical systems motivated the search for new optical elements, thus ensuring progress in this field. Gradient index (GRIN) lenses led the way to design of optical systems that were too expensive or even impossible to produce with conventional lenses. These systems include fiber optics components, copying machines, industrial and medical endoscopes, ANDCD recorders and players, to mention just a few. GRIN lenses opened the door to possibilities for optical systems enhancement, thus reducing their weight and size. GRIN lenses have advanced the potential for aberration correction in comparison with conventional lenses, and they allow the design of inexpensive optical systems that combine high optical quality with compactness and simplicity. Progress in GRIN lens technology is a consequence of the various developments in optical, physical, and chemical sciences, computational and fine manufacturing technique, and the combined efforts of various individuals and organizations.
