# 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: "inquiry glass        "
DATA:
  - type: formula 2 
    wavelength_range: 0.334 2.5
    coefficients: 0 1.34972093 0.00736272269 0.238587973 0.0253765327 0.9667336 103.502909
  - type: tabulated k
    data: |
        0.334 2.3467E-06
        0.350 7.2853E-07
        0.365 2.7387E-07
        0.370 2.0534E-07
        0.380 1.1408E-07
        0.390 6.3676E-08
        0.400 3.8782E-08
        0.405 3.2639E-08
        0.420 2.0205E-08
        0.436 1.8160E-08
        0.460 1.4716E-08
        0.500 7.9777E-09
        0.546 6.9658E-09
        0.580 7.3996E-09
        0.620 1.1877E-08
        0.660 1.4758E-08
        0.700 1.1169E-08
        1.060 2.0305E-08
        1.530 9.8390E-08
        1.970 5.2286E-07
        2.325 2.9638E-06
        2.500 6.1794E-06
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 20.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: 5.05e-07 1.16e-08 -1.53e-11 4.9e-07 5.1e-10 0.183
    nd: 1.62278
    Vd: 56.98
    glass_code: 623570.364
    glass_status: special
    density: 3.639 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 6.83e-06 K<sup>-1</sup>
      - temperature_range: 20 300 °C
        coefficient: 7.84e-06 K<sup>-1</sup>
    dPgF: -0.0005
    climatic_resistance: 3.0
    stain_resistance: 3.0
    acid_resistance: 52.2
    alkali_resistance: 2.0
    phosphate_resistance: 2.2
