Optical constants of OHARA - LAH (Lanthanum, high-index)
S-LAH95
Wavelength:
µm
(0.360–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{2.15636617λ^2}{λ^2-0.012288051}+\frac{0.329558178λ^2}{λ^2-0.0555507835}+\frac{1.72178935λ^2}{λ^2-124.43934}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 25.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 9.86e-07 1.06e-08 -1.51e-11 9.56e-07 1.15e-09 0.265
nd: 1.903659
Vd: 31.343065
density: 4.64 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 7.3e-06 K-1
dPgF: 0.0055
climatic_resistance: 1.0
acid_resistance: 4.0
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