# 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 2.06636247 0.0122133846 0.349315832 0.0555959908 1.91746463 125.47362
  - type: tabulated k
    data: |
        0.360 8.0598E-06
        0.370 2.9274E-06
        0.380 1.3027E-06
        0.390 7.3157E-07
        0.400 4.8008E-07
        0.420 2.7505E-07
        0.440 1.8329E-07
        0.460 1.3042E-07
        0.480 9.6707E-08
        0.500 7.2272E-08
        0.550 3.5155E-08
        0.600 2.3933E-08
        0.650 2.0732E-08
        0.700 1.6736E-08
        0.800 1.2745E-08
        0.900 1.4338E-08
        1.000 2.3909E-08
        1.200 2.8691E-08
        1.400 5.5844E-08
        1.600 8.9440E-08
        1.800 1.7293E-07
        2.000 4.3563E-07
        2.200 1.2329E-06
        2.400 4.5020E-06
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 25.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: 2.6e-06 1.15e-08 -3.36e-11 8.82e-07 1.2e-09 0.279
    nd: 1.885000
    Vd: 30.163795
    glass_code: 885302
    glass_status: special
    density: 3.99 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 6.6e-06 K<sup>-1</sup>
      - temperature_range: 20 300 °C
        coefficient: 8.2e-06 K<sup>-1</sup>
    dPgF: 0.0052
    climatic_resistance: 2.0
    acid_resistance: 2.3
    phosphate_resistance: 1.0
