# 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: "lead containing glass type. step 0.5 available        "
DATA:
  - type: formula 2 
    wavelength_range: 0.35 2.5
    coefficients: 0 1.40301821 0.0105795466 0.231767504 0.0493226978 0.939056586 112.405955
  - type: tabulated k
    data: |
        0.350 1.1077E-06
        0.365 3.8167E-07
        0.370 2.7762E-07
        0.380 1.6845E-07
        0.390 1.0351E-07
        0.400 5.9959E-08
        0.405 4.9943E-08
        0.420 3.3847E-08
        0.436 2.5209E-08
        0.460 1.7677E-08
        0.500 1.1180E-08
        0.546 8.7117E-09
        0.580 9.2541E-09
        0.620 9.8924E-09
        0.660 1.2643E-08
        0.700 8.9305E-09
        1.060 1.3523E-08
        1.530 7.3606E-08
        1.970 8.0161E-07
        2.325 2.5347E-06
        2.500 3.8041E-06
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 20.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: 1.1e-06 1.75e-08 -1.29e-11 1.08e-06 1.03e-09 0.249
    nd: 1.64769
    Vd: 33.85
    glass_code: 648339.386
    glass_status: standard
    density: 3.86 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 8.4e-06 K<sup>-1</sup>
      - temperature_range: 20 300 °C
        coefficient: 9.2e-06 K<sup>-1</sup>
    dPgF: 0.0017
    climatic_resistance: 1.0
    stain_resistance: 0.0
    acid_resistance: 2.0
    alkali_resistance: 2.3
    phosphate_resistance: 2.0
