# 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: 0.38 2.5
    coefficients: 0 1.61625977 0.0127534559 0.259229334 0.0581983954 1.07762317 116.60768
  - type: tabulated k
    data: |
        0.380 3.4030E-06
        0.390 1.2343E-06
        0.400 4.7245E-07
        0.405 3.0388E-07
        0.420 1.1147E-07
        0.436 5.5209E-08
        0.460 3.2573E-08
        0.500 1.7604E-08
        0.546 8.7117E-09
        0.580 9.2541E-09
        0.620 1.3863E-08
        0.660 1.4758E-08
        0.700 1.1169E-08
        1.060 1.0137E-08
        1.530 6.3727E-08
        1.970 5.2286E-07
        2.325 2.0310E-06
        2.500 2.9528E-06
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 20.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: 5.31e-06 1.59e-08 -4.07e-11 1.28e-06 1.32e-09 0.27
    nd: 1.72825
    Vd: 28.41
    glass_code: 728284.428
    glass_status: standard
    density: 4.28 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 7.5e-06 K<sup>-1</sup>
      - temperature_range: 20 300 °C
        coefficient: 8.4e-06 K<sup>-1</sup>
    dPgF: 0.0085
    climatic_resistance: 1.0
    stain_resistance: 0.0
    acid_resistance: 1.0
    alkali_resistance: 1.2
    phosphate_resistance: 2.0
