Optical constants of OHARA - BAL (Barium, low-index)
S-BAL22
Wavelength:
µm
(0.3 – 2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.16333541λ^2}{λ^2-0.0118079103}+\frac{0.26332321λ^2}{λ^2+0.00438112893}+\frac{1.12551059λ^2}{λ^2-106.905682}$$Conditions & Spec sheet
n_absolute: false wavelength_vacuum: false temperature: 25.0 ℃ thermal_dispersion: - type: "Schott formula" coefficients: 1.07e-06 1.47e-08 -3.65e-11 3.9e-07 5.2e-10 0.186 nd: 1.568729 Vd: 63.104860 glass_code: 569631 glass_status: special density: 3.05 g/cm3 thermal_expansion: - temperature_range: -30 70 ℃ coefficient: 6.5e-06 K-1 - temperature_range: 20 300 ℃ coefficient: 7.5e-06 K-1 dPgF: -0.0023 climatic_resistance: 3.0 acid_resistance: 51.2 phosphate_resistance: 3.0
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets