# 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: 2.891704 -0.01284803 2 0.02450539 -2 0.001674117 -4 -0.0001176163 -6 1.046904e-05 -8
  - type: tabulated k
    data: |
        0.420 1.8907E-07
        0.440 1.1388E-07
        0.460 8.1431E-08
        0.480 5.7730E-08
        0.500 4.4010E-08
        0.550 2.6340E-08
        0.600 3.3540E-08
        0.650 3.6335E-08
        0.700 2.7922E-08
        0.800 1.9127E-08
        0.900 2.1518E-08
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 25.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: 2.3519e-06 0.0 0.0 0.0 0.0 0.0
    nd: 1.723420
    Vd: 37.949115
    glass_code: 723380
    glass_status: preferred
    density: 3.95 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 7.4e-06 K<sup>-1</sup>
      - temperature_range: 20 300 °C
        coefficient: 8.4e-06 K<sup>-1</sup>
    dPgF: 0.0035
