Optical constants of CDGM - ZLAF (Dense lanthanum flint)
D-ZLAF52LA
Wavelength:
µm
(0.340–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.88205933λ^2}{λ^2-0.00984915169}+\frac{0.302908859λ^2}{λ^2-0.0406191391}+\frac{1.2538738λ^2}{λ^2-95.893604}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 5.23e-06 1.56e-08 -3.55e-11 8.33e-07 7.37e-10 0.217
nd: 1.810000
Vd: 40.992863
glass_code: 810410
density: 4.56 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 6.6e-06 K-1
- temperature_range: 20 300 °C
coefficient: 8.3e-06 K-1
dPgF: -0.006
climatic_resistance: 1.0
Comments
anneal rate:4°C/h
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets