Optical constants of CDGM - ZLAF (Dense lanthanum flint)
H-ZLAF69
Wavelength:
µm
(0.290 – 2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{0.659414732λ^2}{λ^2-0.025605996}+\frac{1.55675638λ^2}{λ^2-0.00727769577}+\frac{1.25417967λ^2}{λ^2-93.1176682}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
- type: "Schott formula"
coefficients: 1.12e-06 1.52e-08 -3.71e-11 6.39e-07 4.9e-10 0.192
nd: 1.816000
Vd: 46.549300
glass_code: 816466
density: 5.01 g/cm3
thermal_expansion:
- temperature_range: -30 70 ℃
coefficient: 6.4e-06 K-1
- temperature_range: 20 300 ℃
coefficient: 7.8e-06 K-1
dPgF: -0.0095
climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets