Optical constants of SUMITA - BaF (Barium flint)
K-BaF9
Wavelength:
µm
(0.350–2.000)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.6455399-0.010990833λ^{2}+0.018955207λ^{-2}+0.00040800743λ^{-4}+9.934634\text{×}10^{-06}λ^{-6}+9.3197902\text{×}10^{-07}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 20.0 °C thermal_dispersion: - type: "Schott formula" coefficients: -4.02e-07 1.44e-08 -1.41e-10 4.98e-07 5.81e-10 0.243 nd: 1.64328 Vd: 47.8 glass_code: 643478 density: 3.44 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 6.6e-06 K-1 - temperature_range: 20 300 °C coefficient: 8.2e-06 K-1 dPgF: 0.0012 climatic_resistance: 1.0 acid_resistance: 2.0
References
SUMITA Zemax catalog 2017-02-02 (obtained from http://www.sumita-opt.co.jp)
See also SUMITA optical glass data book