title: Studies on the light-focusing plastic rod. 11: Preparation of a light-defocusing plastic rod.
abstract: A light-defocusing plastic rod (LDR) with an antiparabolic refractive-index distribution was prepared by the two-step copolymerization of diethylene glycol bis(allyl carbonate) (CR-39) with phenyl methacrylate or vinyl benzoate. A concave lens function of the representative LDR was demonstrated with the value of chromatic aberration factor.
authors.forename: Y
authors.initials: Y
authors.lastname: Ohtsuka
authors.forename: K
authors.initials: K
authors.lastname: Maeda