Optical constants of OHARA - FPM (Fluorophosphate, medium-index)
S-FPM3
Wavelength:
µm
(0.280–2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{0.809407286λ^2}{λ^2-0.00376072389}+\frac{0.527007033λ^2}{λ^2-0.0135654895}+\frac{0.909127704λ^2}{λ^2-142.503612}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 25.0 °C thermal_dispersion: - type: "Schott formula" coefficients: -1.39e-05 1.49e-09 1.66e-11 3.43e-07 1.65e-10 0.218 nd: 1.537750 Vd: 74.703119 density: 3.64 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 1.15e-05 K-1 dPgF: 0.0186 climatic_resistance: 1.0 acid_resistance: 5.1 phosphate_resistance: 4.1
Comments
Recommended - The unique relative partial dispersion.
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets