Optical constants of OHARA - LAM (Lanthanum, medium-index)
S-LAM7
Wavelength:
µm
(0.36–2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.71014712λ^2}{λ^2-0.010516108}+\frac{0.256943292λ^2}{λ^2-0.0502809636}+\frac{1.63986271λ^2}{λ^2-146.181217}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 25.0 °C thermal_dispersion: - type: "Schott formula" coefficients: 4.3e-06 1.23e-08 -3.62e-11 7.71e-07 8.56e-10 0.265 nd: 1.749497 Vd: 35.283397 glass_code: 750353 density: 3.81 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 6.7e-06 K-1 - temperature_range: 20 300 °C coefficient: 7.9e-06 K-1 dPgF: 0.0025 climatic_resistance: 1.0 acid_resistance: 1.0 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