# this file is part of refractiveindex.info database
# refractiveindex.info database is in the public domain
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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 
    range: 0.37 2.5
    coefficients: 0 1.70579259 0.0133874699 0.344223052 0.0579561608 1.09601828 121.616024
  - type: tabulated k
    data: |
        0.370 5.4237E-06
        0.380 2.7852E-06
        0.390 1.1068E-06
        0.400 4.9104E-07
        0.405 3.5379E-07
        0.420 1.4086E-07
        0.436 7.1186E-08
        0.460 3.8574E-08
        0.500 1.7604E-08
        0.546 1.0459E-08
        0.580 1.1111E-08
        0.620 1.1877E-08
        0.660 1.4758E-08
        0.700 1.1169E-08
        1.060 1.0137E-08
        1.530 5.3868E-08
        1.970 5.2286E-07
        2.325 2.0310E-06
        2.500 2.8383E-06
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 20.0 °C
    coefficients_of_thermal_dispersion: 6.02e-06 1.7e-08 -2.61e-11 1.63e-06 1.59e-09 0.269
    n_d: 1.7847
    V_d: 26.08
    glass_code: 785261.492
    glass_status: standard
    density: 4.92 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 7.9e-06 K<sup>-1</sup>
    coefficient_of_thermal_expansion_2: 8.8e-06 K<sup>-1</sup>
    ΔP_gF: 0.0098
    climatic_resistance: 1.0
    stain_resistance: 1.0
    acid_resistance: 3.2
    alkali_resistance: 2.2
    phosphate_resistance: 3.2
