Schott K4, 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 1.189095e+000
C1 7.893966e-003
B2 8.413592e-002
C2 3.392190e-002
B3 9.302198e-001
C3 1.070495e+002