Optical constants of OHARA - NPH (Niobophosphate, high-index)
S-NPH2
Wavelength:
µm
(0.39–2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{2.0386951λ^2}{λ^2-0.0170796224}+\frac{0.437269641λ^2}{λ^2-0.0749254813}+\frac{2.96711461λ^2}{λ^2-174.155354}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 25.0 °C thermal_dispersion: - type: "Schott formula" coefficients: -4.13e-06 1.29e-08 -2.65e-11 1.02e-06 1.58e-09 0.337 nd: 1.922860 Vd: 18.896912 glass_code: 923189 density: 3.58 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 6.7e-06 K-1 - temperature_range: 20 300 °C coefficient: 8.3e-06 K-1 dPgF: 0.0386 climatic_resistance: 1.0 acid_resistance: 1.0 phosphate_resistance: 1.0
Comments
Recommended - High Index
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets