Glass selection tends to be both a science and an art. It is the intent of this paper to remove the [q~3$mjQ
"mystique" surrounding glass selection, primarily based on the chromatic properties of the glass, 8YO` TgW
and to show via careful parametric analyses how we can optimally select glasses for lenses of 34t[]v|LD
different f/numbers, spectral bands, and performance requirements. The important roles of j!K{1s[.y
refractive index and Abbe number as well as partial dispersion will be considered. Using the `Lr|KuFN
SCHOTT glass map, six separate and identifiable regions along with glasses within each region E]ZIm
will be discussed. The goal for this paper is to make glass selection easier to understand.