Schott SF 10, 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	1.61625977E+00;
B2	2.59229334E-01;
B3	1.07762317E+00;
C1	1.27534559E-02;
C2	5.81983954E-02;
C3	1.16607680E+02;