Optical constants of OHARA - PBM (Plumbate, medium-index)
PBM28W
Wavelength:
µm
(0.3–2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.75779-0.0087331797λ^{2}+0.030379663λ^{-2}+0.0011503031λ^{-4}-1.9167784\text{×}10^{-05}λ^{-6}+7.4745415\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 25.0 °C thermal_dispersion: - type: "Schott formula" coefficients: 8.284e-06 0.0 0.0 0.0 0.0 0.0 nd: 1.688930 Vd: 31.082901 glass_code: 689311 glass_status: preferred density: 4.22 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 8.6e-06 K-1 - temperature_range: 20 300 °C coefficient: 9.4e-06 K-1 dPgF: 0.0031 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