Optical constants of SUMITA - BaSF (Barium dense flint)
K-BaSF4
Wavelength:
µm
(0.340–2.000)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.6590501-0.011944106λ^{2}+0.02185629λ^{-2}+0.0011761807λ^{-4}-7.8567029\text{×}10^{-05}λ^{-6}+8.1413835\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
- type: "Schott formula"
coefficients: 1.95e-06 1.4e-08 -2.27e-10 6.84e-07 1.13e-09 0.259
nd: 1.65128
Vd: 38.3
glass_code: 651383
density: 2.96 g/cm3
thermal_expansion:
- temperature_range: -30 70 ℃
coefficient: 7.1e-06 K-1
- temperature_range: 20 300 ℃
coefficient: 9.2e-06 K-1
dPgF: -0.0006
climatic_resistance: 1.0
acid_resistance: 1.0
References
SUMITA Zemax catalog 2017-02-02 (obtained from http://www.sumita-opt.co.jp)
See also SUMITA optical glass data book