Optical constants of CDGM - ZLAF (Dense lanthanum flint)
H-ZLAF51
Wavelength:
µm
(0.340–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.22431136λ^2}{λ^2-91.245183}+\frac{0.302590305λ^2}{λ^2-0.0426067628}+\frac{1.86090715λ^2}{λ^2-0.0098703156}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 8.54e-06 1.58e-08 -6.65e-11 6.98e-07 1.18e-09 0.253
nd: 1.804500
Vd: 39.635248
glass_code: 805396
density: 4.41 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 5.2e-06 K-1
- temperature_range: 20 300 °C
coefficient: 6.8e-06 K-1
dPgF: -0.005
climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets