A method for the choice of glasses for a superachromatic system consisting of four lenses in contact with each other is developed. The apparatus required for the application of the method, namely, a space representation of three optical constants of the glasses, is described, and the method is applied to the special case of the selection of glasses for a three-lens superachromat.
N. v.d. W. Lessing, "Selection of Optical Glasses in Superachromats," Appl. Opt. 9, 1665-1668 (1970)