Optical constants of CDGM - ZLAF (Dense lanthanum flint)
H-ZLAF68B
Wavelength:
µm
(0.340–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=3.43418261-0.0106199538λ^{2}+0.0400046303λ^{-2}-0.000637942235λ^{-4}+0.000216353029λ^{-6}-8.49876445\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 3.45e-07 1.47e-08 -7.21e-11 7.69e-07 2.19e-10 0.208
nd: 1.883004
Vd: 40.806875
glass_code: 883408
glass_status: preferred
density: 5.53 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 6.8e-06 K-1
- temperature_range: 20 300 °C
coefficient: 8.4e-06 K-1
dPgF: -0.0067
climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets