Optical constants of OHARA - LAM (Lanthanum, medium-index)
S-LAM73
Wavelength:
µm
(0.350–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.86353123λ^2}{λ^2-0.0107620673}+\frac{0.255215617λ^2}{λ^2-0.0487248679}+\frac{1.23399133λ^2}{λ^2-117.12511}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 25.0 °C thermal_dispersion: - type: "Schott formula" coefficients: -6.89e-06 7.66e-09 -9.97e-12 8.33e-07 8.98e-10 0.247 nd: 1.793600 Vd: 37.089450 density: 4.45 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 8.9e-06 K-1 dPgF: 0.0013 climatic_resistance: 3.0 acid_resistance: 52.2 phosphate_resistance: 2.2
Comments
Recommended
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets