Optical constants of CDGM - ZLAF (Dense lanthanum flint)
H-ZLAF69A
Wavelength:
µm
(0.320–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.39269903λ^2}{λ^2-0.00593335223}+\frac{0.823697428λ^2}{λ^2-0.0240980834}+\frac{1.29547295λ^2}{λ^2-95.3762858}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 1.27e-06 1.3e-08 -2.95e-11 6.42e-07 8.08e-10 0.182
nd: 1.816000
Vd: 46.556066
glass_code: 816466
density: 5.06 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 6.4e-06 K-1
- temperature_range: 20 300 °C
coefficient: 7.8e-06 K-1
dPgF: -0.0089
climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets