title: Distortion in a gradient-index rod.
abstract: An algebraic formula is derived for the fifth-order distortion of a GRIN-rod lens. By measuring distortion, one can then determine the coefficients of the profile formula.
authors.affiliation: University of Rochester, Institute of Optics, Rochester, New York 14627, USA.
authors.forename: E W
authors.initials: EW
authors.lastname: Marchand