Optical constants of OHARA - NBM (Niobate, medium-index)
S-NBM51
Wavelength:
µm
(0.32–2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.37023101λ^2}{λ^2-0.00871920342}+\frac{0.177665568λ^2}{λ^2-0.0405725552}+\frac{1.30515471λ^2}{λ^2-112.703058}$$Conditions & Spec sheet
n_absolute: false wavelength_vacuum: false temperature: 25.0 ℃ thermal_dispersion: - type: "Schott formula" coefficients: 3.21e-06 1.49e-08 -3.78e-11 5.35e-07 6.88e-10 0.25 nd: 1.613397 Vd: 44.267706 glass_code: 613443 density: 2.93 g/cm3 thermal_expansion: - temperature_range: -30 70 ℃ coefficient: 6.5e-06 K-1 - temperature_range: 20 300 ℃ coefficient: 7.8e-06 K-1 dPgF: -0.0065 climatic_resistance: 2.0 acid_resistance: 1.0 phosphate_resistance: 1.0
Comments
Recommended
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets