Optical constants of CDGM - LAF (Lanthanum flint)
H-LAF50B
Wavelength:
µm
(0.300–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.17461263λ^2}{λ^2-82.6267633}+\frac{1.65889744λ^2}{λ^2-0.0080512806}+\frac{0.413174064λ^2}{λ^2-0.026961264}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 2.17e-06 1.36e-08 -3.28e-11 5.95e-07 8.86e-10 0.161
nd: 1.772500
Vd: 49.598996
glass_code: 773496
glass_status: standard
density: 4.24 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 5.8e-06 K-1
- temperature_range: 20 300 °C
coefficient: 7.5e-06 K-1
dPgF: -0.0096
climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets