Optical constants of CDGM - LAF (Lanthanum flint)
H-LAF7
Wavelength:
µm
(0.350–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.85620526λ^2}{λ^2-0.0109606128}+\frac{1.38494652λ^2}{λ^2-114.47738}+\frac{0.223526441λ^2}{λ^2-0.0505771615}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -1.02e-06 1.7e-08 -1.39e-10 6.63e-07 4.31e-10 0.279
nd: 1.781790
Vd: 37.092107
glass_code: 782371
density: 3.77 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 8e-06 K-1
- temperature_range: 20 300 °C
coefficient: 9.5e-06 K-1
dPgF: -0.0009
climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets