# 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 1.92094221 0.0115075241 0.219901208 0.0547993543 1.72705231 120.133674
  - type: tabulated k
    data: |
        0.350 9.7665E-06
        0.360 3.6468E-06
        0.370 1.6551E-06
        0.380 9.5167E-07
        0.390 6.1590E-07
        0.400 4.4328E-07
        0.420 2.3537E-07
        0.440 1.6489E-07
        0.460 1.1905E-07
        0.480 8.8880E-08
        0.500 6.0135E-08
        0.550 2.6340E-08
        0.600 2.8734E-08
        0.650 3.1129E-08
        0.700 1.6736E-08
        0.800 1.2745E-08
        0.900 1.4338E-08
        1.000 1.5931E-08
        1.200 9.5541E-09
        1.400 2.2304E-08
        1.600 3.8255E-08
        1.800 1.1505E-07
        2.000 3.8663E-07
        2.200 1.1392E-06
        2.400 4.9917E-06
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 25.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: 2.83e-07 9.65e-09 -2.68e-11 7.96e-07 1e-09 0.263
    nd: 1.800999
    Vd: 34.967403
    glass_code: 801350
    density: 3.55 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 7.9e-06 K<sup>-1</sup>
      - temperature_range: 20 300 °C
        coefficient: 9.5e-06 K<sup>-1</sup>
    dPgF: 0.0015
    climatic_resistance: 1.0
    acid_resistance: 4.0
    phosphate_resistance: 1.0
