# 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: 0.39 2.5
    coefficients: 0 1.88742326 0.0145939341 0.360534025 0.0648198946 2.26189313 176.062211
  - type: tabulated k
    data: |
        0.390 4.3531E-06
        0.400 2.0492E-06
        0.405 1.5958E-06
        0.420 8.7424E-07
        0.436 5.5580E-07
        0.460 3.2673E-07
        0.500 1.8547E-07
        0.546 8.0023E-08
        0.580 5.4331E-08
        0.620 5.8078E-08
        0.660 6.6157E-08
        0.700 5.4128E-08
        1.060 3.0504E-08
        1.530 4.8947E-08
        1.970 2.5598E-07
        2.325 1.7445E-06
        2.500 2.5044E-06
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 20.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: -3.63e-06 8.61e-09 -9.98e-12 1.1e-06 1.69e-09 0.293
    nd: 1.84666
    Vd: 23.62
    glass_code: 847236.355
    glass_status: special
    density: 3.55 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 8.7e-06 K<sup>-1</sup>
      - temperature_range: 20 300 °C
        coefficient: 1e-05 K<sup>-1</sup>
    dPgF: 0.0177
    climatic_resistance: 1.0
    stain_resistance: 0.0
    acid_resistance: 1.3
    alkali_resistance: 1.0
    phosphate_resistance: 1.3
