In this study, we take a data-driven approach to study the design efficiency of a variety of optical designs. Efficiency is
defined to be the number of resolvable spots across the image per lens element. 3188 designs were selected from a
commercially available lens database. Each design was imported into a raytrace code, briefly optimized, and the number
of resolvable spots was computed. Examples of efficient designs within this dataset are shown. Four design efficiency
groupings are created and discussed separately: 1) all-spherical, monochromatic designs, 2) monochromatic designs with
some aspheres, 3) all-spherical, polychromatic designs, and 4) polychromatic designs with some aspheres. Zoom lens
systems were excluded from the dataset. The results of the analysis are intended to answer the question of "how many
elements does it take, as a minimum, to deliver a certain number of resolved spots?"