Schott LLF 6, 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	1.20066684E+00;
B2	1.03689050E-01;
B3	9.54739381E-01;
C1	8.51610832E-03;
C2	4.18805113E-02;
C3	1.14989738E+02;