Gradient-index materials will provide new valuable degrees of freedom for the lens designer. The gradientindex single element lens is studied in terms of its third-order aberration coefficients, ray-trace analysis, and wave-front error.
© 1977 Optical Society of America
Duncan T. Moore, "Design of single element gradient-index collimator," J. Opt. Soc. Am. 67, 1137-1143 (1977)