Optical constants of OHARA - BAL (Barium, low-index)
BAL35
Wavelength:
µm
(0.365–0.9)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.487525-0.01022867λ^{2}+0.01374306λ^{-2}+0.0001662538λ^{-4}+6.25135\text{×}10^{-06}λ^{-6}-2.342041\text{×}10^{-07}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 25.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 2.65e-06 0.0 0.0 0.0 0.0 0.0
nd: 1.589130
Vd: 61.182174
glass_code: 589612
glass_status: preferred
density: 3.31 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 5.8e-06 K-1
- temperature_range: 20 300 °C
coefficient: 6.7e-06 K-1
dPgF: -0.0021
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets