Optical constants of CDGM - LAF (Lanthanum flint)
H-LAF62
Wavelength:
µm
(0.340–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.68895143λ^2}{λ^2-0.00969035554}+\frac{0.196642406λ^2}{λ^2-0.0423750782}+\frac{1.18909464λ^2}{λ^2-118.147033}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
- type: "Schott formula"
coefficients: 3.69e-06 1.78e-08 -1.65e-10 7.29e-07 1.87e-10 0.206
nd: 1.720000
Vd: 43.680739
glass_code: 720437
density: 3.89 g/cm3
thermal_expansion:
- temperature_range: -30 70 ℃
coefficient: 7e-06 K-1
- temperature_range: 20 300 ℃
coefficient: 8.8e-06 K-1
dPgF: -0.0027
climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets