# 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: "step 0.5 available        "
DATA:
  - type: formula 2 
    wavelength_range: 0.3 2.5
    coefficients: 0 1.46231905 0.00724270156 0.344399589 0.0243353131 1.15508372 85.4686868
  - type: tabulated k
    data: |
        0.320 3.9848E-06
        0.334 1.7111E-06
        0.350 6.6604E-07
        0.365 2.8569E-07
        0.370 2.1945E-07
        0.380 1.4096E-07
        0.390 9.0090E-08
        0.400 6.5309E-08
        0.405 5.6661E-08
        0.420 4.0721E-08
        0.436 3.2293E-08
        0.460 2.3617E-08
        0.500 1.2784E-08
        0.546 1.0459E-08
        0.580 1.1111E-08
        0.620 9.8924E-09
        0.660 1.0531E-08
        0.700 8.9305E-09
        1.060 1.6913E-08
        1.530 1.6847E-07
        1.970 9.4577E-07
        2.325 6.4201E-06
        2.500 1.5646E-05
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 20.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: 2.11e-06 1.11e-08 1.82e-12 4.74e-07 -3.47e-10 0.146
    nd: 1.691
    Vd: 54.71
    glass_code: 691547.351
    glass_status: standard
    density: 3.51 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 6.3e-06 K<sup>-1</sup>
      - temperature_range: 20 300 °C
        coefficient: 7.5e-06 K<sup>-1</sup>
    dPgF: -0.0071
    climatic_resistance: 3.0
    stain_resistance: 3.0
    acid_resistance: 52.0
    alkali_resistance: 1.2
    phosphate_resistance: 4.3
