Optical constants of CDGM - LAF (Lanthanum flint)
H-LAF1
Wavelength:
µm
(0.340–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.1615525λ^2}{λ^2-106.692961}+\frac{1.49000619λ^2}{λ^2-0.0073654243}+\frac{0.317836401λ^2}{λ^2-0.0313945298}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 1e-06 2.31e-08 -1.6e-10 5.94e-07 -4.95e-10 0.215
nd: 1.693620
Vd: 49.193837
glass_code: 694492
density: 3.85 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 7.1e-06 K-1
- temperature_range: 20 300 °C
coefficient: 8.5e-06 K-1
dPgF: -0.0028
climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets