Optical constants of CDGM - LAF (Lanthanum flint)
H-LAF4GT
Wavelength:
µm
(0.350–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{0.210645313λ^2}{λ^2-0.0542759294}+\frac{1.75547352λ^2}{λ^2-0.0112370777}+\frac{1.28979005λ^2}{λ^2-119.852069}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 20.0 °C thermal_dispersion: - type: "Schott formula" coefficients: 6.53e-07 1.81e-08 -1.59e-10 9.02e-07 8.16e-10 0.246 nd: 1.749500 Vd: 34.989266 glass_code: 750350 density: 3.92 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 8e-06 K-1 - temperature_range: 20 300 °C coefficient: 9.5e-06 K-1 dPgF: 0.0031 climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets