Optical constants of OHARA - LAH (Lanthanum, high-index)
S-LAH55VS
Wavelength:
µm
(0.320–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.92591095λ^2}{λ^2-0.0096115249}+\frac{0.34895346λ^2}{λ^2-0.036513298}+\frac{1.42230744λ^2}{λ^2-103.36409}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 25.0 °C thermal_dispersion: - type: "Schott formula" coefficients: 2.82e-06 1.01e-08 -4.98e-12 6.79e-07 6.67e-10 0.229 nd: 1.834809 Vd: 42.743680 density: 4.58 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 6.3e-06 K-1 dPgF: -0.0075 climatic_resistance: 2.0 acid_resistance: 4.0 phosphate_resistance: 1.0
Comments
Recommended
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets