Optical constants of SUMITA - LaF (Lanthanum flint)
K-LaFn11
Wavelength:
µm
(0.340–2.000)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.8917009-0.011920903λ^{2}+0.022558933λ^{-2}+0.00079204231λ^{-4}-4.0820426\text{×}10^{-05}λ^{-6}+4.1373045\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 20.0 °C thermal_dispersion: - type: "Schott formula" coefficients: -5.4e-07 2.18e-08 -2.46e-10 5.35e-07 -3.35e-10 0.243 nd: 1.72013 Vd: 46.0 glass_code: 720460 density: 3.88 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 8.1e-06 K-1 - temperature_range: 20 300 °C coefficient: 8.2e-06 K-1 dPgF: -0.0028 climatic_resistance: 1.0 acid_resistance: 4.0
References
SUMITA Zemax catalog 2017-02-02 (obtained from http://www.sumita-opt.co.jp)
See also SUMITA optical glass data book