Optical constants of OHARA - LAH (Lanthanum, high-index)
L-LAH84
Wavelength:
µm
(0.34–2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.83606127λ^2}{λ^2-0.00981969903}+\frac{0.341720032λ^2}{λ^2-0.0385636264}+\frac{1.35280173λ^2}{λ^2-107.04553}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 25.0 °C thermal_dispersion: - type: "Schott formula" coefficients: 8.14e-06 9.68e-09 -3.1e-12 8.24e-07 8.84e-10 0.23 nd: 1.808350 Vd: 40.548503 density: 4.62 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 6e-06 K-1 dPgF: -0.007 climatic_resistance: 2.0 acid_resistance: 51.3 phosphate_resistance: 2.2
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