Optical constants of CDGM - ZLAF (Dense lanthanum flint)
H-ZLAF68N
Wavelength:
µm
(0.340–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.49455025λ^2}{λ^2-109.762523}+\frac{2.07574257λ^2}{λ^2-0.010404077}+\frac{0.361138143λ^2}{λ^2-0.041262142}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -9.92e-09 1.31e-08 -2.62e-11 7.34e-07 7.89e-10 0.237
nd: 1.883000
Vd: 39.218200
glass_code: 883392
density: 5.17 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 5.8e-06 K-1
- temperature_range: 20 300 °C
coefficient: 8.6e-06 K-1
dPgF: -0.006
climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets