# 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/ohara_2017-11-30.agf\">OHARA Zemax catalog 2017-11-30</a> (obtained from <a href=\"http://www.ohara-inc.co.jp/en/product/optical/list/\">http://www.ohara-inc.co.jp</a>)<br>See also <a href=\"http://refractiveindex.info/download/data/2017/ohara_2017-11-30.pdf\">OHARA glass data sheets</a>"
COMMENTS: ""
DATA:
  - type: formula 3 
    wavelength_range: 0.3 2.4
    coefficients: 3.0554324 -0.010867434 2 0.038522891 -2 0.0030173971 -4 -0.0002129474 -6 2.4864803e-05 -8
  - type: tabulated k
    data: |
        0.370 5.2173E-06
        0.380 2.1571E-06
        0.390 9.7671E-07
        0.400 5.1731E-07
        0.420 1.7848E-07
        0.440 8.8648E-08
        0.460 5.1610E-08
        0.480 3.0681E-08
        0.500 1.9944E-08
        0.550 8.7623E-09
        0.600 9.5589E-09
        0.650 1.5541E-08
        0.700 1.1152E-08
        0.800 6.3694E-09
        0.900 7.1656E-09
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 25.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: 1.457e-05 0.0 0.0 0.0 0.0 0.0
    nd: 1.784702
    Vd: 26.216753
    glass_code: 785262
    glass_status: preferred
    density: 4.99 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 7.5e-06 K<sup>-1</sup>
      - temperature_range: 20 300 °C
        coefficient: 8.7e-06 K<sup>-1</sup>
    dPgF: 0.0092
    acid_resistance: 3.2
    phosphate_resistance: 3.0
