Optical constants of CDGM - ZLAF (Dense lanthanum flint)
H-ZLAF50D
Wavelength:
µm
(0.320–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{0.497440659λ^2}{λ^2-0.0285446966}+\frac{1.67780264λ^2}{λ^2-0.00788379288}+\frac{1.32327423λ^2}{λ^2-94.0514342}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 1.43e-06 1.84e-08 1.12e-10 9.58e-07 3.67e-09 0.085
nd: 1.804000
Vd: 46.575016
glass_code: 804466
density: 4.52 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 6.2e-06 K-1
- temperature_range: 20 300 °C
coefficient: 7.9e-06 K-1
dPgF: -0.009
climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets