# 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        "
DATA:
  - type: formula 2 
    wavelength_range: 0.35 2.5
    coefficients: 0 1.55912923 0.0121481001 0.284246288 0.0534549042 0.968842926 112.174809
  - type: tabulated k
    data: |
        0.350 3.9066E-06
        0.365 8.0532E-07
        0.370 5.2561E-07
        0.380 2.8512E-07
        0.390 1.7288E-07
        0.400 1.0616E-07
        0.405 9.3555E-08
        0.420 5.3183E-08
        0.436 3.3714E-08
        0.460 2.3617E-08
        0.500 1.1180E-08
        0.546 6.9658E-09
        0.580 7.3996E-09
        0.620 9.8924E-09
        0.660 1.0531E-08
        0.700 8.9305E-09
        1.060 1.3523E-08
        1.530 7.3606E-08
        1.970 6.6068E-07
        2.325 2.3291E-06
        2.500 3.4281E-06
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 20.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: 4.84e-06 1.7e-08 -4.52e-11 1.38e-06 1.26e-09 0.259
    nd: 1.71736
    Vd: 29.51
    glass_code: 717295.446
    glass_status: standard
    density: 4.46 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 8.1e-06 K<sup>-1</sup>
      - temperature_range: 20 300 °C
        coefficient: 8.8e-06 K<sup>-1</sup>
    dPgF: 0.0042
    climatic_resistance: 2.0
    stain_resistance: 1.0
    acid_resistance: 3.2
    alkali_resistance: 2.3
    phosphate_resistance: 3.0
