# 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: "         "
DATA:
  - type: formula 2 
    range: 0.31 2.5
    coefficients: 0 1.50781212 0.00746098727 0.318866829 0.0242024834 1.14287213 80.9565165
  - type: tabulated k
    data: |
        0.310 3.1763E-06
        0.320 2.1597E-06
        0.334 1.1787E-06
        0.350 5.5069E-07
        0.365 2.5926E-07
        0.370 2.0534E-07
        0.380 1.2744E-07
        0.390 9.0090E-08
        0.400 6.1294E-08
        0.405 5.2626E-08
        0.420 3.9343E-08
        0.436 3.2293E-08
        0.460 2.3617E-08
        0.500 1.2784E-08
        0.546 8.7117E-09
        0.580 1.2969E-08
        0.620 1.5852E-08
        0.660 1.2643E-08
        0.700 1.1169E-08
        1.060 1.6913E-08
        1.530 1.9881E-07
        1.970 1.0933E-06
        2.325 7.3582E-06
        2.500 1.9162E-05
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 20.0 °C
    coefficients_of_thermal_dispersion: 2.68e-06 1.15e-08 -1.44e-11 3.72e-07 5.53e-10 0.226
    n_d: 1.6968
    V_d: 55.41
    glass_code: 697554.363
    glass_status: standard
    density: 3.63 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 5.5e-06 K<sup>-1</sup>
    coefficient_of_thermal_expansion_2: 6.9e-06 K<sup>-1</sup>
    ΔP_gF: -0.0079
    climatic_resistance: 3.0
    stain_resistance: 2.0
    acid_resistance: 52.3
    alkali_resistance: 1.0
    phosphate_resistance: 3.0
