# 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 
    wavelength_range: 0.29 2.5
    coefficients: 0 1.26661442 0.00589278062 0.665919318 0.0197509041 1.1249612 78.8894174
  - type: tabulated k
    data: |
        0.290 4.2510E-06
        0.300 3.3485E-06
        0.310 2.6241E-06
        0.320 1.6394E-06
        0.334 8.9727E-07
        0.350 4.4617E-07
        0.365 2.3057E-07
        0.370 1.7763E-07
        0.380 1.1408E-07
        0.390 7.6813E-08
        0.400 6.2631E-08
        0.405 5.3969E-08
        0.420 3.7967E-08
        0.436 2.9455E-08
        0.460 1.9160E-08
        0.500 9.5781E-09
        0.546 5.2218E-09
        0.580 9.2541E-09
        0.620 7.9099E-09
        0.660 6.3120E-09
        0.700 6.6946E-09
        1.060 1.6913E-08
        1.530 1.9881E-07
        1.970 1.0191E-06
        2.325 7.3582E-06
        2.500 1.8323E-05
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 20.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: 1.96e-06 9.65e-09 4.4e-12 4.91e-07 5.28e-10 0.161
    nd: 1.72916
    Vd: 54.5
    glass_code: 729545.402
    glass_status: standard
    density: 4.02 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 5.81e-06 K<sup>-1</sup>
      - temperature_range: 20 300 °C
        coefficient: 6.91e-06 K<sup>-1</sup>
    dPgF: -0.0079
    climatic_resistance: 1.0
    stain_resistance: 0.0
    acid_resistance: 52.3
    alkali_resistance: 1.0
    phosphate_resistance: 3.3
