# 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: 0.365 0.9
    coefficients: 2.568088 -0.01046716 2 0.01660196 -2 0.0005809348 -4 -2.356209e-05 -6 2.231142e-06 -8
  - type: tabulated k
    data: |
        0.390 2.4531E-07
        0.400 1.5658E-07
        0.420 8.8048E-08
        0.440 7.4313E-08
        0.460 5.9043E-08
        0.480 4.6114E-08
        0.500 3.5972E-08
        0.550 2.1939E-08
        0.600 2.8734E-08
        0.650 3.6335E-08
        0.700 3.3523E-08
        0.800 3.8312E-08
        0.900 5.0887E-08
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 25.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: -2.9384e-06 0.0 0.0 0.0 0.0 0.0
    nd: 1.617722
    Vd: 49.832320
    glass_code: 618498
    glass_status: preferred
    density: 3.25 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 8.4e-06 K<sup>-1</sup>
      - temperature_range: 20 300 °C
        coefficient: 9.5e-06 K<sup>-1</sup>
    dPgF: 0.0005
