Glass selection tends to be both a science and an art. It is the intent of this paper to remove the l|'{Cb
"mystique" surrounding glass selection, primarily based on the chromatic properties of the glass, z.]
and to show via careful parametric analyses how we can optimally select glasses for lenses of w[?E
oFI$Y
different f/numbers, spectral bands, and performance requirements. The important roles of +oR wXO3W
refractive index and Abbe number as well as partial dispersion will be considered. Using the U+'h~P'4
SCHOTT glass map, six separate and identifiable regions along with glasses within each region _Sn7z?
will be discussed. The goal for this paper is to make glass selection easier to understand.