# this file is part of refractiveindex.info database
# refractiveindex.info database is in the public domain
# copyright and related rights waived via CC0 1.0

REFERENCES: "<a href=\"http://refractiveindex.info/download/data/2017/schott_2017-01-20b.agf\">SCHOTT Zemax catalog 2017-01-20b</a> (obtained from <a href=\"http://www.schott.com/advanced_optics/english/download/\">http://www.schott.com</a>)<br>See also <a href=\"http://refractiveindex.info/download/data/2017/schott_2017-01-20.pdf\">SCHOTT glass data sheets</a>"
COMMENTS: "inquiry glass        "
DATA:
  - type: formula 2 
    wavelength_range: 0.37 2.5
    coefficients: 0 1.52005444 0.01096144 0.17573947 0.0593248486 1.43623424 126.795151
  - type: tabulated k
    data: |
        0.370 3.5282E-06
        0.380 1.3410E-06
        0.390 5.9344E-07
        0.400 3.3278E-07
        0.405 2.7165E-07
        0.420 1.7090E-07
        0.436 1.2328E-07
        0.460 9.5280E-08
        0.500 6.4970E-08
        0.546 4.0440E-08
        0.580 3.7298E-08
        0.620 4.3902E-08
        0.660 4.2443E-08
        0.700 3.3676E-08
        1.060 3.7321E-08
        1.530 1.4834E-07
        1.970 7.3075E-07
        2.325 3.5378E-06
        2.500 6.5332E-06
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 20.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: 1.32e-06 1.22e-08 -1.36e-11 7.64e-07 1.09e-09 0.279
    nd: 1.66679
    Vd: 33.12
    glass_code: 667331.290
    glass_status: special
    density: 2.9 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 7.2e-06 K<sup>-1</sup>
      - temperature_range: 20 300 °C
        coefficient: 8.3e-06 K<sup>-1</sup>
    dPgF: 0.0095
    climatic_resistance: 1.0
    stain_resistance: 0.0
    acid_resistance: 1.0
    alkali_resistance: 1.2
    phosphate_resistance: 1.0
