# 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: 0.31 2.5
    coefficients: 0 1.3434087 0.00675074317 0.241417935 0.0219910513 0.952896897 103.551457
  - type: tabulated k
    data: |
        0.320 3.5718E-06
        0.334 1.7111E-06
        0.350 7.0731E-07
        0.365 2.8867E-07
        0.370 2.1945E-07
        0.380 1.2744E-07
        0.390 7.6813E-08
        0.400 4.6682E-08
        0.405 3.9267E-08
        0.420 2.8374E-08
        0.436 2.5209E-08
        0.460 2.0644E-08
        0.500 1.2784E-08
        0.546 8.7117E-09
        0.580 1.1111E-08
        0.620 1.5852E-08
        0.660 1.4758E-08
        0.700 1.3409E-08
        1.060 2.0305E-08
        1.530 2.1914E-07
        1.970 1.3993E-06
        2.325 4.9832E-06
        2.500 9.8507E-06
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 20.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: -9.29e-06 5.78e-09 8.87e-13 4.59e-07 5.86e-10 0.155
    nd: 1.62014
    Vd: 63.48
    glass_code: 620635.360
    glass_status: special
    density: 3.6 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 9.4e-06 K<sup>-1</sup>
      - temperature_range: 20 300 °C
        coefficient: 1.09e-05 K<sup>-1</sup>
    dPgF: 0.0053
    climatic_resistance: 2.0
    stain_resistance: 1.0
    acid_resistance: 52.3
    alkali_resistance: 1.2
    phosphate_resistance: 4.3
