Schott KzFS 7A, 365nm - 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	1.53916293E+00;
B2	2.09618759E-01;
B3	9.36171329E-01;
C1	1.02662460E-02;
C2	4.71104946E-02;
C3	7.16979327E+01;