Optical constants of OHARA - LAL (Lanthanum, low-index)
S-LAL11
Wavelength:
µm
(0.28–2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.7037498-0.011741892λ^{2}+0.0158996λ^{-2}+0.00061265364λ^{-4}-4.6676845\text{×}10^{-05}λ^{-6}+2.6544952\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 25.0 °C thermal_dispersion: - type: "Schott formula" coefficients: -6.19e-07 1.33e-08 -4.63e-11 6.45e-07 4.57e-10 0.178 nd: 1.658296 Vd: 57.332589 glass_code: 658573 glass_status: special density: 3.9 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 7.3e-06 K-1 - temperature_range: 20 300 °C coefficient: 8.4e-06 K-1 dPgF: -0.0037 climatic_resistance: 4.0 acid_resistance: 53.0 phosphate_resistance: 4.2
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets