Schott F 3, 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	1.32797322E+00;
B2	2.05862833E-01;
B3	9.04336126E-01;
C1	9.77102802E-03;
C2	4.63606329E-02;
C3	1.07863739E+02;