Optical constants of OHARA - BAL (Barium, low-index)
BAL22
Wavelength:
µm
(0.365 – 0.9)
Derived optical constants
n
k
logX
logY
eV
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 λ_is_vacuum: false temperature: 25.0 °C coefficients_of_thermal_dispersion: 3.1613e-06 0.0 0.0 0.0 0.0 0.0 n_d: 1.568729 V_d: 63.162358 glass_code: 569632 glass_status: preferred density: 3.06 g/cm3 coefficient_of_thermal_expansion_1: 6.6e-06 K-1 coefficient_of_thermal_expansion_2: 7.9e-06 K-1 ΔP_gF: -0.0029
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets