Optical constants of OHARA - LAL (Lanthanum, low-index)
S-LAL19
Wavelength:
µm
(0.280–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{0.973997577λ^2}{λ^2-0.00379332678}+\frac{0.958186322λ^2}{λ^2-0.0177574581}+\frac{1.20163359λ^2}{λ^2-83.79896}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 25.0 °C thermal_dispersion: - type: "Schott formula" coefficients: 4.19e-06 1.04e-08 7.25e-13 4.73e-07 4.97e-10 0.202 nd: 1.729160 Vd: 54.095223 density: 3.98 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 5.4e-06 K-1 dPgF: -0.0092 climatic_resistance: 3.0 acid_resistance: 52.0 phosphate_resistance: 2.0
Comments
Recommended
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets