# 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: "suitable for precision molding. step 0.5 available        "
DATA:
  - type: formula 2 
    wavelength_range: 0.334 2.5
    coefficients: 0 1.62693651 0.010880863 0.24369876 0.0494207753 1.62007141 131.009163
  - type: tabulated k
    data: |
        0.334 4.8960E-06
        0.350 1.1382E-06
        0.365 4.4807E-07
        0.370 3.5463E-07
        0.380 2.4004E-07
        0.390 1.7288E-07
        0.400 1.2008E-07
        0.405 1.0749E-07
        0.420 8.2721E-08
        0.436 6.3901E-08
        0.460 4.3090E-08
        0.500 2.4054E-08
        0.546 1.2209E-08
        0.580 9.2541E-09
        0.620 9.8924E-09
        0.660 1.0531E-08
        0.700 8.9305E-09
        1.060 3.3758E-09
        1.530 8.3504E-08
        1.970 5.2286E-07
        2.325 2.6396E-06
        2.500 5.3583E-06
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 20.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: 7.93e-07 6.47e-09 -5e-12 7.71e-07 1.01e-09 0.254
    nd: 1.72047
    Vd: 34.7
    glass_code: 720347.320
    glass_status: standard
    density: 3.204 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 7.77e-06 K<sup>-1</sup>
      - temperature_range: 20 300 °C
        coefficient: 9.43e-06 K<sup>-1</sup>
    dPgF: -0.0021
    climatic_resistance: 1.0
    stain_resistance: 0.0
    acid_resistance: 1.0
    alkali_resistance: 1.0
    phosphate_resistance: 1.0
