Optical constants of CDGM - LAF (Lanthanum flint)
H-LAF2
Wavelength:
µm
(0.340–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.62865121λ^2}{λ^2-0.00864219294}+\frac{1.11837078λ^2}{λ^2-109.900598}+\frac{0.253252293λ^2}{λ^2-0.0342503107}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -4.12e-06 2.75e-08 -1.05e-10 8.05e-07 -8.24e-10 0.107
nd: 1.717000
Vd: 47.888609
glass_code: 717479
density: 4.25 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 7.4e-06 K-1
- temperature_range: 20 300 °C
coefficient: 9.1e-06 K-1
dPgF: -0.0035
climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets