# 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: 3.397212 -0.0158255 2 0.03681892 -2 0.001759645 -4 -8.404167e-05 -6 1.052281e-05 -8
  - type: tabulated k
    data: |
        0.420 2.2821E-07
        0.440 1.5755E-07
        0.460 1.0773E-07
        0.480 7.7169E-08
        0.500 5.6098E-08
        0.550 2.6340E-08
        0.600 2.3933E-08
        0.650 2.5928E-08
        0.700 2.2326E-08
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 25.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: 4.6897e-06 0.0 0.0 0.0 0.0 0.0
    nd: 1.873996
    Vd: 35.258594
    glass_code: 874353
    glass_status: preferred
    density: 4.57 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 6.2e-06 K<sup>-1</sup>
      - temperature_range: 20 300 °C
        coefficient: 7.5e-06 K<sup>-1</sup>
    dPgF: -0.0017
