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