Optical constants of CDGM - ZLAF (Dense lanthanum flint)
H-ZLAF75B
Wavelength:
µm
(0.360–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{0.322804345λ^2}{λ^2-0.055262706}+\frac{2.16371144λ^2}{λ^2-0.0124574436}+\frac{1.59867722λ^2}{λ^2-108.245897}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -2.36e-06 1.27e-08 -2.37e-11 9.1e-07 1.21e-09 0.262
nd: 1.903660
Vd: 31.418411
glass_code: 904314
density: 4.56 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 7e-06 K-1
- temperature_range: 20 300 °C
coefficient: 8.8e-06 K-1
dPgF: 0.0021
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets