Optical constants of SUMITA - PFK
K-PFK80
Wavelength:
µm
(0.270–2.000)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.2178347-0.0055966846λ^{2}+0.0083703747λ^{-2}+0.0001097485λ^{-4}-3.3983937\text{×}10^{-06}λ^{-6}+2.5836351\text{×}10^{-07}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -1.91e-05 -2.54e-09 -5.06e-11 3.29e-07 5.19e-11 0.188
nd: 1.49700
Vd: 81.5
glass_code: 497815
density: 3.6 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 1.34e-05 K-1
- temperature_range: 20 300 °C
coefficient: 1.54e-05 K-1
dPgF: 0.0296
climatic_resistance: 1.0
acid_resistance: 3.0
References
SUMITA Zemax catalog 2017-02-02 (obtained from http://www.sumita-opt.co.jp)
See also SUMITA optical glass data book