Schott TiF N5, 365nm - 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	1.32754366E+00;
B2	1.46368803E-01;
B3	1.17272891E+00;
C1	1.00180695E-02;
C2	5.72806316E-02;
C3	1.23529685E+02;