Schott K11, 313nm - 2325nm
USER
2 1
SQRT(1+B1*wvl^2/(wvl^2-C1)+B2*wvl^2/(wvl^2-C2)+B3*wvl^2/(wvl^2-C3))
0
B1 1.162496e+000
C1 7.532700e-003
B2 5.826135e-002
C2 3.590845e-002
B3 9.052040e-001
C3 1.024046e+002