# 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: 0.365 2.325
    coefficients: 0 2.17884378 0.0115760879 0.325508683 0.0495982503 1.70608646 128.91358
  - type: tabulated k
    data: |
        0.360 4.3377E-06
        0.370 2.1611E-06
        0.380 1.3027E-06
        0.390 8.9283E-07
        0.400 6.3169E-07
        0.420 3.4843E-07
        0.440 2.2411E-07
        0.460 1.5325E-07
        0.480 1.0063E-07
        0.500 6.4177E-08
        0.550 1.7542E-08
        0.600 9.5589E-09
        0.650 5.1751E-09
        0.700 5.5732E-09
        0.800 6.3694E-09
        0.900 7.1656E-09
        1.000 7.9617E-09
        1.200 9.5541E-09
        1.400 1.1146E-08
        1.600 2.5490E-08
        1.800 1.0062E-07
        2.000 3.3778E-07
        2.200 8.6118E-07
        2.400 3.3299E-06
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 25.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: 2.48e-06 9.67e-09 -3.51e-12 8.57e-07 9.77e-10 0.258
    nd: 1.905250
    Vd: 35.036826
    density: 4.83 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 7e-06 K<sup>-1</sup>
    climatic_resistance: 1.0
    acid_resistance: 4.0
    phosphate_resistance: 1.0
