Optical constants of CDGM - ZLAF (Dense lanthanum flint)
H-ZLAF71
Wavelength:
µm
(0.360–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{0.276154598λ^2}{λ^2-0.0557996382}+\frac{2.02569085λ^2}{λ^2-0.0120700588}+\frac{1.44513509λ^2}{λ^2-99.8778223}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -2.79e-06 1.48e-08 -2.75e-11 8e-07 8.15e-10 0.275
nd: 1.850260
Vd: 32.297288
glass_code: 850323
density: 4.22 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 7.6e-06 K-1
- temperature_range: 20 300 °C
coefficient: 9.2e-06 K-1
dPgF: 0.0024
climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets