Optical constants of SUMITA - ZnSF
K-ZnSF8
Wavelength:
µm
(0.340–2.000)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.8600337-0.012073452λ^{2}+0.026131306λ^{-2}+0.00091303268λ^{-4}-3.0467767\text{×}10^{-05}λ^{-6}+4.891802\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 1.49e-05 1.99e-08 -2.6e-10 8.88e-07 7.78e-10 0.234
nd: 1.71430
Vd: 38.9
glass_code: 714389
density: 3.72 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 4.9e-06 K-1
- temperature_range: 20 300 °C
coefficient: 6e-06 K-1
dPgF: -0.0047
climatic_resistance: 2.0
acid_resistance: 4.0
References
SUMITA Zemax catalog 2017-02-02 (obtained from http://www.sumita-opt.co.jp)
See also SUMITA optical glass data book