# 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 2 
    wavelength_range: 0.3 2.4
    coefficients: 0 1.55408138 0.0120146818 0.289397861 0.0532883208 1.06727944 122.863029
  - type: tabulated k
    data: |
        0.340 9.4875E-06
        0.350 2.9240E-06
        0.360 1.0218E-06
        0.370 4.4408E-07
        0.380 2.1945E-07
        0.390 1.3316E-07
        0.400 9.0398E-08
        0.420 4.7122E-08
        0.440 3.1655E-08
        0.460 2.2030E-08
        0.480 1.5310E-08
        0.500 1.1955E-08
        0.550 4.3790E-09
        0.600 4.7770E-09
        0.650 5.1751E-09
        0.700 5.5732E-09
        0.800 6.3694E-09
        0.900 7.1656E-09
        1.000 7.9617E-09
        1.200 9.5541E-09
        1.400 3.3473E-08
        1.600 3.8255E-08
        1.800 1.5844E-07
        2.000 2.8909E-07
        2.200 7.1467E-07
        2.400 1.0199E-06
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 25.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: 1.076e-05 0.0 0.0 0.0 0.0 0.0
    nd: 1.717362
    Vd: 29.513538
    glass_code: 717295
    glass_status: preferred
    density: 4.47 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 8e-06 K<sup>-1</sup>
      - temperature_range: 20 300 °C
        coefficient: 8.9e-06 K<sup>-1</sup>
    dPgF: 0.0048
    acid_resistance: 3.2
    phosphate_resistance: 2.0
