Optical constants of SCHOTT - LaF (Lanthanum flint)
LAFN7
Wavelength:
µm
(0.35–2.5)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.66842615λ^2}{λ^2-0.0103159999}+\frac{0.298512803λ^2}{λ^2-0.0469216348}+\frac{1.0774376λ^2}{λ^2-82.5078509}$$Conditions & Spec sheet
n_absolute: false wavelength_vacuum: false temperature: 20.0 ℃ thermal_dispersion: - type: "Schott formula" coefficients: 7.27e-06 1.31e-08 -3.32e-11 8.88e-07 9.32e-10 0.248 nd: 1.7495 Vd: 34.95 glass_code: 750350.438 glass_status: standard density: 4.38 g/cm3 thermal_expansion: - temperature_range: -30 70 ℃ coefficient: 5.3e-06 K-1 - temperature_range: 20 300 ℃ coefficient: 6.4e-06 K-1 dPgF: -0.0025 climatic_resistance: 3.0 stain_resistance: 1.0 acid_resistance: 53.3 alkali_resistance: 2.2 phosphate_resistance: 4.3
Comments
lead containing glass type
References
SCHOTT Zemax catalog 2017-01-20b (obtained from http://www.schott.com)
See also SCHOTT glass data sheets