Schott SF 63, 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	1.62174406E+00;
B2	3.15965826E-01;
B3	1.03248928E+00;
C1	1.26014263E-02;
C2	5.57275798E-02;
C3	1.16478183E+02;