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Optical constants of SUMITA - BaF (Barium flint)
K-BaFn3

Wavelength: µm
 (0.330 – 2.000)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.7128944-0.010619935λ^{2}+0.019653632λ^{-2}+0.00040051165λ^{-4}+1.1626539\text{×}10^{-06}λ^{-6}+1.1579589\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 7.44e-08 1.27e-08 -3.11e-10 5.72e-07 5.44e-10 0.214
nd: 1.66422
Vd: 49.2
glass_code: 664492
density: 3.62 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 7e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 8.5e-06 K-1
dPgF: -0.0024
climatic_resistance: 1.0
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

Data

[Expressions for n]   [CSV - comma separated]   [TXT - tab separated]   [Full database record]

INFO

SUMITA Optical Glass, Inc.

SUMITA Optical Glass, Inc. is a Japanese glass manufacturer

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