Optical constants of OHARA - LAH (Lanthanum, high-index)
L-LAH90
Wavelength:
µm
(0.28–2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.97595301λ^2}{λ^2-0.0104276395}+\frac{0.283924985λ^2}{λ^2-0.0427708222}+\frac{1.35176368λ^2}{λ^2-101.45371}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 25.0 °C thermal_dispersion: - type: "Schott formula" coefficients: 5.28e-06 1.08e-08 3.8e-14 8.31e-07 7.62e-10 0.217 nd: 1.832200 Vd: 40.097595 density: 4.65 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 6.3e-06 K-1 dPgF: -0.0052 climatic_resistance: 2.0 acid_resistance: 5.2 phosphate_resistance: 1.2
Comments
Low Softening Temperature
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets