Optical constants of CDGM - ZLAF (Dense lanthanum flint)
H-ZLAF4LB
Wavelength:
µm
(0.350–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{0.30378754λ^2}{λ^2-0.050087732}+\frac{2.22145931λ^2}{λ^2-0.011875826}+\frac{1.54968685λ^2}{λ^2-113.957667}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 2.77e-07 1.42e-08 -4.04e-11 8.52e-07 9.84e-10 0.245
nd: 1.910820
Vd: 35.282389
glass_code: 911353
density: 4.84 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 6.6e-06 K-1
- temperature_range: 20 300 °C
coefficient: 8.8e-06 K-1
dPgF: -0.0022
climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets