Optical constants of OHARA - LAM (Lanthanum, medium-index)
S-LAM3
Wavelength:
µm
(0.34–2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.64258713λ^2}{λ^2-0.0086824602}+\frac{0.23963461λ^2}{λ^2-0.0351226242}+\frac{1.22483026λ^2}{λ^2-116.604369}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 25.0 °C thermal_dispersion: - type: "Schott formula" coefficients: -4.66e-06 9.34e-09 -3.89e-11 4.57e-07 5.81e-10 0.266 nd: 1.717004 Vd: 47.927969 glass_code: 717479 density: 4.25 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 8e-06 K-1 - temperature_range: 20 300 °C coefficient: 9.4e-06 K-1 dPgF: -0.0034 climatic_resistance: 2.0 acid_resistance: 53.2 phosphate_resistance: 4.2
Comments
Recommended
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets