Schott LaSF 35, 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	2.45505861E+00;
B2	4.53006077E-01;
B3	2.38513080E+00;
C1	1.35670404E-02;
C2	5.45803020E-02;
C3	1.67904715E+02;