Optical constants of CDGM - LAF (Lanthanum flint)
H-LAF54
Wavelength:
µm
(0.330–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=3.14470202-0.010105906λ^{2}+0.0343096974λ^{-2}-0.000833127912λ^{-4}+0.000217008428λ^{-6}-8.70147899\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 6.31e-06 2.13e-08 9.75e-11 1.02e-06 2.29e-10 0.077
nd: 1.799519
Vd: 42.253294
glass_code: 800422
density: 4.51 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 5.7e-06 K-1
- temperature_range: 20 300 °C
coefficient: 7e-06 K-1
dPgF: -0.0064
climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets