Optical constants of OHARA - BAL (Barium, low-index)
BAL5
Wavelength:
µm
(0.3–2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.3550985-0.0086952235λ^{2}+0.013797477λ^{-2}+0.00027607581λ^{-4}+9.6025624\text{×}10^{-08}λ^{-6}+6.0765812\text{×}10^{-07}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 25.0 °C thermal_dispersion: - type: "Schott formula" coefficients: -1.103e-06 0.0 0.0 0.0 0.0 0.0 nd: 1.547393 Vd: 53.550738 glass_code: 547536 glass_status: preferred density: 2.82 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 9.2e-06 K-1 - temperature_range: 20 300 °C coefficient: 1.06e-05 K-1 dPgF: -0.0006 acid_resistance: 2.2 phosphate_resistance: 2.0
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets