Schott LLF 7, 334nm - 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	1.22924701E+00;
B2	1.22565819E-01;
B3	8.88850802E-01;
C1	8.86069707E-03;
C2	4.33083564E-02;
C3	1.06216061E+02;