Optical constants of OHARA - BAL (Barium, low-index)
BAL22
Wavelength:
µm
(0.365–0.9)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.428819-0.01160085λ^{2}+0.01108574λ^{-2}+0.00063122λ^{-4}-6.395123\text{×}10^{-05}λ^{-6}+3.440011\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 25.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 3.1613e-06 0.0 0.0 0.0 0.0 0.0
nd: 1.568729
Vd: 63.162358
glass_code: 569632
glass_status: preferred
density: 3.06 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 6.6e-06 K-1
- temperature_range: 20 300 °C
coefficient: 7.9e-06 K-1
dPgF: -0.0029
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets