Optical constants of CDGM - ZLAF (Dense lanthanum flint)
H-ZLAF73
Wavelength:
µm
(0.320 – 2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{0.507090015λ^2}{λ^2-0.0349987602}+\frac{1.9243026λ^2}{λ^2-0.00942878144}+\frac{1.4988641λ^2}{λ^2-116.086666}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
- type: "Schott formula"
coefficients: 1.2e-06 1.22e-08 -2.53e-11 8.04e-07 7.88e-10 0.213
nd: 1.881000
Vd: 40.161331
glass_code: 881402
density: 5.2 g/cm3
thermal_expansion:
- temperature_range: -30 70 ℃
coefficient: 6.8e-06 K-1
- temperature_range: 20 300 ℃
coefficient: 8.6e-06 K-1
dPgF: -0.008
climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets