Optical constants of SUMITA - LaK (Lanthanum crown)
K-LaKn11
Wavelength:
µm
(0.330–2.000)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.6994624-0.011441236λ^{2}+0.017672891λ^{-2}+0.00039604649λ^{-4}-3.5739234\text{×}10^{-06}λ^{-6}+7.0861608\text{×}10^{-07}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 20.0 °C thermal_dispersion: - type: "Schott formula" coefficients: -2.99e-07 1.21e-08 -1.58e-10 5.15e-07 8.57e-10 0.196 nd: 1.65830 Vd: 53.4 glass_code: 658534 density: 3.75 g/cm3 thermal_expansion: - temperature_range: 20 300 °C coefficient: 8.2e-06 K-1 dPgF: -0.0014 climatic_resistance: 1.0 acid_resistance: 1.0
References
SUMITA Zemax catalog 2017-02-02 (obtained from http://www.sumita-opt.co.jp)
See also SUMITA optical glass data book