Optical constants of SUMITA - BaSF (Barium dense flint)
K-BaSF5
Wavelength:
µm
(0.340–2.000)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.5165762-0.01183779λ^{2}+0.017631594λ^{-2}+0.00095834052λ^{-4}-6.7623905\text{×}10^{-05}λ^{-6}+6.2543393\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -1.33e-06 1.61e-08 -2.3e-10 5.78e-07 6.96e-10 0.262
nd: 1.60323
Vd: 42.5
glass_code: 603425
density: 2.71 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 7.9e-06 K-1
- temperature_range: 20 300 °C
coefficient: 1.02e-05 K-1
dPgF: 0.0005
climatic_resistance: 2.0
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