Optical constants of CDGM - LAF (Lanthanum flint)
H-LAF51
Wavelength:
µm
(0.340–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.16091555λ^2}{λ^2-102.913644}+\frac{1.53441573λ^2}{λ^2-0.00759735684}+\frac{0.293141701λ^2}{λ^2-0.0338071716}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -2.02e-06 1.89e-08 -1.3e-10 4.46e-07 1.77e-10 0.281
nd: 1.700000
Vd: 48.079839
glass_code: 700481
density: 3.82 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 8e-06 K-1
- temperature_range: 20 300 °C
coefficient: 9.4e-06 K-1
dPgF: -0.0024
climatic_resistance: 2.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets