Optical constants of CDGM - LAK (Lanthanum crown)
H-LAK2A
Wavelength:
µm
(0.302–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{0.914808038λ^2}{λ^2-82.3260698}+\frac{1.00522491λ^2}{λ^2-0.004505044}+\frac{0.803415958λ^2}{λ^2-0.018371342}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 20.0 °C thermal_dispersion: - type: "Schott formula" coefficients: -5.16e-06 1.42e-08 -4.62e-11 5.61e-07 5.14e-10 0.155 nd: 1.692110 Vd: 54.539198 glass_code: 692545 density: 3.94 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 8e-06 K-1 - temperature_range: 20 300 °C coefficient: 9.7e-06 K-1 dPgF: -0.0048 climatic_resistance: 2.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets