# 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: "step 0.5 available        "
DATA:
  - type: formula 2 
    range: 0.32 2.5
    coefficients: 0 1.38121836 0.00706416337 0.196745645 0.0233251345 0.886089205 97.4847345
  - type: tabulated k
    data: |
        0.320 3.5718E-06
        0.334 1.7111E-06
        0.350 7.0731E-07
        0.365 2.8867E-07
        0.370 2.1945E-07
        0.380 1.2744E-07
        0.390 7.6813E-08
        0.400 4.6682E-08
        0.405 3.9267E-08
        0.420 2.8374E-08
        0.436 2.5209E-08
        0.460 2.0644E-08
        0.500 1.2784E-08
        0.546 8.7117E-09
        0.580 1.1111E-08
        0.620 1.5852E-08
        0.660 1.4758E-08
        0.700 1.3409E-08
        1.060 2.0305E-08
        1.530 2.1914E-07
        1.970 1.3993E-06
        2.325 4.9832E-06
        2.500 9.8507E-06
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 20.0 °C
    coefficients_of_thermal_dispersion: -9.28e-06 7.19e-09 1.45e-12 4.06e-07 3.17e-10 0.19
    n_d: 1.618
    V_d: 63.39
    glass_code: 618634.357
    glass_status: standard
    density: 3.568 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 9.56e-06 K<sup>-1</sup>
    coefficient_of_thermal_expansion_2: 1.084e-05 K<sup>-1</sup>
    ΔP_gF: 0.0052
    climatic_resistance: 1.0
    stain_resistance: 1.0
    acid_resistance: 53.3
    alkali_resistance: 2.3
    phosphate_resistance: 4.3
