Key points are not available for this paper at this time.
Two general approaches to the analys is of an image-forming syste m arc considcred. One depends on the image of a point object and the other on the Fourier transform of this image. The two are developed independently and the n coordinated. a practical characteristic fu nctio n being determined for each approach. The relative m erit of the two approaches are considered.
Roland V. Shack (Tue,) studied this question.