The first-order imaging properties of dielectric rods with refractive index decreasing quadratically with distance from the axis are analyzed from the viewpoint of gaussian ray optics. Cardinal-point locations vary with rod length, but the usual object-image relationships are then still applicable. Several ray diagrams are shown; one of the examples is a contact magnifier.
© 1970 Optical Society of America
FELIX P. KAPRON, "Geometrical Optics of Parabolic Index-Gradient Cylindrical Lenses," J. Opt. Soc. Am. 60, 1433-1436 (1970)