Schott SF 64A, 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	1.60088314E+00;
B2	2.10665258E-01;
B3	1.50114373E+00;
C1	1.20157497E-02;
C2	6.01645745E-02;
C3	1.36256449E+02;