Glass selection tends to be both a science and an art. It is the intent of this paper to remove the ~d? \rj3=
"mystique" surrounding glass selection, primarily based on the chromatic properties of the glass, =1vVI Twl
and to show via careful parametric analyses how we can optimally select glasses for lenses of +nslS:(
different f/numbers, spectral bands, and performance requirements. The important roles of wen6 "
refractive index and Abbe number as well as partial dispersion will be considered. Using the Wh> Y_ k
SCHOTT glass map, six separate and identifiable regions along with glasses within each region p{Gg,.f!HM
will be discussed. The goal for this paper is to make glass selection easier to understand.
