# 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: "Recommended "
DATA:
  - type: formula 2 
    wavelength_range: 0.35 2.4
    coefficients: 0 1.36955358 0.00941331434 0.0853825867 0.0504359027 1.16159771 130.548899
  - type: tabulated k
    data: |
        0.350 6.1477E-06
        0.360 2.3519E-06
        0.370 1.0084E-06
        0.380 4.9145E-07
        0.390 2.5878E-07
        0.400 1.4990E-07
        0.420 7.0935E-08
        0.440 4.9366E-08
        0.460 4.0489E-08
        0.480 3.0681E-08
        0.500 2.3945E-08
        0.550 1.3150E-08
        0.600 1.4345E-08
        0.650 2.0732E-08
        0.700 1.6736E-08
        0.800 1.2745E-08
        0.900 1.4338E-08
        1.000 1.5931E-08
        1.200 2.8691E-08
        1.400 1.0072E-07
        1.600 8.9440E-08
        1.800 2.7477E-07
        2.000 5.8353E-07
        2.200 1.6319E-06
        2.400 2.6597E-06
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 25.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: -2.69e-06 1.28e-08 -3.68e-11 6.28e-07 7.06e-10 0.238
    nd: 1.582673
    Vd: 46.423175
    glass_code: 583464
    glass_status: special
    density: 2.75 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 8.5e-06 K<sup>-1</sup>
      - temperature_range: 20 300 °C
        coefficient: 1e-05 K<sup>-1</sup>
    dPgF: 0.0007
    climatic_resistance: 2.0
    acid_resistance: 1.0
    phosphate_resistance: 1.0
