# 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: 0.35 2.5
    coefficients: 0 1.66842615 0.0103159999 0.298512803 0.0469216348 1.0774376 82.5078509
  - type: tabulated k
    data: |
        0.350 5.1305E-06
        0.365 1.7592E-06
        0.370 1.0792E-06
        0.380 5.2107E-07
        0.390 3.0844E-07
        0.400 2.0693E-07
        0.405 1.6480E-07
        0.420 8.2721E-08
        0.436 4.9445E-08
        0.460 2.6596E-08
        0.500 9.5781E-09
        0.546 1.0459E-08
        0.580 9.2541E-09
        0.620 9.8924E-09
        0.660 1.0531E-08
        0.700 8.9305E-09
        1.060 1.3523E-08
        1.530 1.9881E-07
        1.970 1.0191E-06
        2.325 6.5985E-06
        2.500 1.9162E-05
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 20.0 °C
    coefficients_of_thermal_dispersion: 7.27e-06 1.31e-08 -3.32e-11 8.88e-07 9.32e-10 0.248
    n_d: 1.7495
    V_d: 34.95
    glass_code: 750350.438
    glass_status: standard
    density: 4.38 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 5.3e-06 K<sup>-1</sup>
    coefficient_of_thermal_expansion_2: 6.4e-06 K<sup>-1</sup>
    ΔP_gF: -0.0025
    climatic_resistance: 3.0
    stain_resistance: 1.0
    acid_resistance: 53.3
    alkali_resistance: 2.2
    phosphate_resistance: 4.3
