Glass selection tends to be both a science and an art. It is the intent of this paper to remove the HuK'tU#
"mystique" surrounding glass selection, primarily based on the chromatic properties of the glass, }'@*Ol j
and to show via careful parametric analyses how we can optimally select glasses for lenses of OKf/[hyu
different f/numbers, spectral bands, and performance requirements. The important roles of ~V./*CQ\c
refractive index and Abbe number as well as partial dispersion will be considered. Using the #vDe/o+=
SCHOTT glass map, six separate and identifiable regions along with glasses within each region P,>#
will be discussed. The goal for this paper is to make glass selection easier to understand.