# 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 
    range: 0.365 2.5
    coefficients: 0 1.61957826 0.0125502104 0.339493189 0.0544559822 1.02566931 117.652222
  - type: tabulated k
    data: |
        0.365 1.4790E-06
        0.370 9.4044E-07
        0.380 4.4883E-07
        0.390 2.4636E-07
        0.400 1.4838E-07
        0.405 1.2158E-07
        0.420 6.8574E-08
        0.436 4.6571E-08
        0.460 2.9581E-08
        0.500 1.4389E-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 5.3868E-08
        1.970 5.9139E-07
        2.325 2.2284E-06
        2.500 3.3066E-06
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 20.0 °C
    coefficients_of_thermal_dispersion: 5.6e-06 1.7e-08 -5.27e-11 1.54e-06 1.46e-09 0.266
    n_d: 1.7552
    V_d: 27.58
    glass_code: 755276.479
    glass_status: standard
    density: 4.79 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 8e-06 K<sup>-1</sup>
    coefficient_of_thermal_expansion_2: 8.9e-06 K<sup>-1</sup>
    ΔP_gF: 0.0062
    climatic_resistance: 1.0
    stain_resistance: 2.0
    acid_resistance: 4.3
    alkali_resistance: 2.3
    phosphate_resistance: 3.3
