# 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 1.095086 0.005354893 0.4642304 0.02206781 1.203056 133.3129
  - type: tabulated k
    data: |
        0.310 8.6503E-06
        0.320 3.6341E-06
        0.330 1.5700E-06
        0.340 7.4253E-07
        0.350 3.8787E-07
        0.360 2.1716E-07
        0.370 1.3557E-07
        0.380 8.8991E-08
        0.390 6.2700E-08
        0.400 4.4878E-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 1.6736E-08
        0.800 1.2745E-08
        0.900 2.1518E-08
        1.000 3.1895E-08
        1.200 3.8274E-08
        1.400 1.1197E-07
        1.600 8.9440E-08
        1.800 1.8743E-07
        2.400 2.3160E-06
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 25.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: 5.615e-06 0.0 0.0 0.0 0.0 0.0
    nd: 1.614047
    Vd: 54.971106
    glass_code: 614550
    glass_status: preferred
    density: 3.6 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 6.1e-06 K<sup>-1</sup>
      - temperature_range: 20 300 °C
        coefficient: 7.2e-06 K<sup>-1</sup>
    dPgF: -0.0015
    acid_resistance: 5.2
    phosphate_resistance: 2.0
