Optix.eXpert
Optix.eXpert is our new website that aims at connecting optical professionals with employers looking to outsource optics related work. Sign up and post a listing now to start offering a service.
Optical constants of OHARA - LAH (Lanthanum, high-index)
S-LAH92
Wavelength:
µm
(0.350 – 2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{2.10440311λ^2}{λ^2-0.0108531811}+\frac{0.358346161λ^2}{λ^2-0.044340592}+\frac{1.63010064λ^2}{λ^2-123.2498}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 25.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 2.15e-06 9.26e-09 8.39e-14 8.47e-07 8.87e-10 0.242
nd: 1.891899
Vd: 37.134024
density: 4.87 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 7.5e-06 K-1
dPgF: -0.0034
climatic_resistance: 2.0
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