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 - LAL (Lanthanum, low-index)
S-LAL54Q
Wavelength:
µm
(0.310 – 2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{0.920085087λ^2}{λ^2-0.0160829667}+\frac{0.758646115λ^2}{λ^2-0.00292059306}+\frac{1.07073096λ^2}{λ^2-85.12112}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 25.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 8.26e-06 1.35e-08 1.67e-11 4.28e-07 4.05e-10 0.205
nd: 1.651000
Vd: 56.238379
density: 3.36 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 4.3e-06 K-1
dPgF: -0.0085
climatic_resistance: 2.0
acid_resistance: 4.0
phosphate_resistance: 3.0
Comments
Recommended
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets