# 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: 2.5759016 -0.010553544 2 0.013895937 -2 0.00026498331 -4 -1.9680543e-06 -6 1.0989977e-07 -8
  - type: tabulated k
    data: |
        0.310 6.2307E-06
        0.320 4.3667E-06
        0.330 2.7569E-06
        0.340 1.6175E-06
        0.350 9.1495E-07
        0.360 4.9949E-07
        0.370 2.6155E-07
        0.380 1.4240E-07
        0.390 8.4947E-08
        0.400 5.1341E-08
        0.420 3.0216E-08
        0.440 2.8124E-08
        0.460 2.2030E-08
        0.480 1.9146E-08
        0.500 1.1955E-08
        0.550 8.7623E-09
        0.600 1.4345E-08
        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: -6.88e-06 1.5e-08 -3.45e-13 8.32e-07 -2.61e-10 0.0
    nd: 1.617001
    Vd: 62.800809
    glass_code: 617628
    glass_status: special
    density: 3.53 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 9.7e-06 K<sup>-1</sup>
      - temperature_range: 20 300 °C
        coefficient: 1.11e-05 K<sup>-1</sup>
    dPgF: 0.0031
    climatic_resistance: 2.0
    acid_resistance: 51.2
    phosphate_resistance: 4.0
