Optical constants of CDGM - LAK (Lanthanum crown)
H-LAK10
Wavelength:
µm
(0.290–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{0.783174579λ^2}{λ^2-0.0027316949}+\frac{0.894315049λ^2}{λ^2-0.0169034325}+\frac{1.138969λ^2}{λ^2-111.158589}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 20.0 °C thermal_dispersion: - type: "Schott formula" coefficients: -9.18e-07 1.25e-08 -2.28e-11 4.91e-07 6.43e-10 0.189 nd: 1.651130 Vd: 55.890872 glass_code: 651559 density: 3.73 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 7.1e-06 K-1 - temperature_range: 20 300 °C coefficient: 8.4e-06 K-1 dPgF: -0.003 climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets