Optical constants of OHARA - BAL (Barium, low-index)
BAL3
Wavelength:
µm
(0.350 – 0.9)
Derived optical constants
n
k
logX
logY
eV
Dispersion formula
$$n^2=2.426175-0.00781539λ^{2}+0.01476624λ^{-2}+0.0003669042λ^{-4}-1.052689\text{×}10^{-05}λ^{-6}+1.039369\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false λ_is_vacuum: false temperature: 25.0 °C coefficients_of_thermal_dispersion: -3.144e-06 0.0 0.0 0.0 0.0 0.0 n_d: 1.571351 V_d: 52.968158 glass_code: 571530 glass_status: preferred density: 3.14 g/cm3 coefficient_of_thermal_expansion_1: 9.7e-06 K-1 coefficient_of_thermal_expansion_2: 1.18e-05 K-1 ΔP_gF: -0.0007
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets