Optical constants of SUMITA - LaF (Lanthanum flint)
K-LaFn5
Wavelength:
µm
(0.330–2.000)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.9746618-0.015490396λ^{2}+0.021676376λ^{-2}+0.0007907947λ^{-4}-3.5069226\text{×}10^{-05}λ^{-6}+2.1235401\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 20.0 °C thermal_dispersion: - type: "Schott formula" coefficients: 2.26e-06 2.18e-08 -2.34e-10 5.21e-07 6.65e-10 0.203 nd: 1.74300 Vd: 49.2 glass_code: 743492 density: 4.05 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 5.1e-06 K-1 - temperature_range: 20 300 °C coefficient: 7.1e-06 K-1 dPgF: -0.0084 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