Optical constants of OHARA - LAH (Lanthanum, high-index)
S-LAH75
Wavelength:
µm
(0.365–0.9)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=3.397212-0.0158255λ^{2}+0.03681892λ^{-2}+0.001759645λ^{-4}-8.404167\text{×}10^{-05}λ^{-6}+1.052281\text{×}10^{-05}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 25.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 4.6897e-06 0.0 0.0 0.0 0.0 0.0
nd: 1.873996
Vd: 35.258594
glass_code: 874353
glass_status: preferred
density: 4.57 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 6.2e-06 K-1
- temperature_range: 20 300 °C
coefficient: 7.5e-06 K-1
dPgF: -0.0017
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets