Optical constants of OHARA - LAL (Lanthanum, low-index)
S-LAL12
Wavelength:
µm
(0.28–2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{0.992053895λ^2}{λ^2-0.0167095063}+\frac{0.771377731λ^2}{λ^2-0.00236750156}+\frac{1.18296264λ^2}{λ^2-105.90108}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 25.0 °C thermal_dispersion: - type: "Schott formula" coefficients: -2.18e-06 1.12e-08 -3.73e-11 3.25e-07 4.77e-10 0.27 nd: 1.677900 Vd: 55.341195 glass_code: 678553 density: 4.01 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 7.2e-06 K-1 - temperature_range: 20 300 °C coefficient: 8.6e-06 K-1 dPgF: -0.0047 climatic_resistance: 2.0 acid_resistance: 53.0 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