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Optical constants of SUMITA - BaSF (Barium dense flint)
K-BaSF4

Wavelength: µm
 (0.340 – 2.000)  
 

Derived optical constants

n   k   logX   logY   eV

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 °C
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 °C
    coefficient: 7.1e-06 K-1
  - temperature_range: 20 300 °C
    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

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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