Aberration of large numerical-aperture gradient-index lenses for optical pickup systems can be corrected with spherical surfaces whose curvatures are chosen corresponding to the measured values of the fourth- and sixth-order refractive-index coefficients.
© 1980 Optical Society of America
K. Kikuchi, S. Ishihara, H. Shimizu, and J. Shimada, "Design of gradient-index spherical lenses for optical pickup systems," Appl. Opt. 19, 1076-1080 (1980)