Schott SF 1, 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	1.55912923E+00;
B2	2.84246288E-01;
B3	9.68842926E-01;
C1	1.21481001E-02;
C2	5.34549042E-02;
C3	1.12174809E+02;