Optical constants of OHARA - LAH (Lanthanum, high-index)
LAH80
Wavelength:
µm
(0.3–2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{2.06636247λ^2}{λ^2-0.0122133846}+\frac{0.349315832λ^2}{λ^2-0.0555959908}+\frac{1.91746463λ^2}{λ^2-125.47362}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 25.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 2.6e-06 1.15e-08 -3.36e-11 8.82e-07 1.2e-09 0.279
nd: 1.885000
Vd: 30.163795
glass_code: 885302
glass_status: special
density: 3.99 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 6.6e-06 K-1
- temperature_range: 20 300 °C
coefficient: 8.2e-06 K-1
dPgF: 0.0052
climatic_resistance: 2.0
acid_resistance: 2.3
phosphate_resistance: 1.0
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets