Glass selection tends to be both a science and an art. It is the intent of this paper to remove the %9NGVC
"mystique" surrounding glass selection, primarily based on the chromatic properties of the glass, % NS]z ;G
and to show via careful parametric analyses how we can optimally select glasses for lenses of :WCUHQ+
different f/numbers, spectral bands, and performance requirements. The important roles of m9xu$z|e
refractive index and Abbe number as well as partial dispersion will be considered. Using the ccm <rZ7
SCHOTT glass map, six separate and identifiable regions along with glasses within each region i]$7w! r&
will be discussed. The goal for this paper is to make glass selection easier to understand.