Schott SF 14, 405nm - 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	1.69182538E+00;
B2	2.85919934E-01;
B3	1.12595145E+00;
C1	1.33151542E-02;
C2	6.12647445E-02;
C3	1.18405242E+02;