Optical constants of SCHOTT - LaK (Lanthanum crown)
LAK9G15
Wavelength:
µm
(0.38–2.5)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.28773667λ^2}{λ^2-0.0055754192}+\frac{0.518244853λ^2}{λ^2-0.0223679524}+\frac{26.1756109λ^2}{λ^2-1892.2533}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false nd: 1.69064 Vd: 54.76 glass_code: 691548.353 glass_status: special density: 3.525 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 6.34e-06 K-1 - temperature_range: 20 300 °C coefficient: 7.56e-06 K-1 dPgF: -0.0055 climatic_resistance: 1.0 stain_resistance: 2.0 acid_resistance: 53.0 alkali_resistance: 1.3 phosphate_resistance: 4.3
Comments
inquiry glass
References
SCHOTT Zemax catalog 2017-01-20b (obtained from http://www.schott.com)
See also SCHOTT glass data sheets