# 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: 0.36 2.4
    coefficients: 0 1.69493484 0.010272319 0.192890298 0.052118764 1.56385948 137.818035
  - type: tabulated k
    data: |
        0.360 8.0598E-06
        0.370 3.3549E-06
        0.380 1.6472E-06
        0.390 8.9283E-07
        0.400 5.1731E-07
        0.420 2.2821E-07
        0.440 1.3201E-07
        0.460 9.2677E-08
        0.480 6.9381E-08
        0.500 5.2065E-08
        0.550 2.6340E-08
        0.600 2.3933E-08
        0.650 2.5928E-08
        0.700 2.2326E-08
        0.800 1.2745E-08
        0.900 1.4338E-08
        1.000 1.5931E-08
        1.200 1.9118E-08
        1.400 6.7046E-08
        1.600 6.3822E-08
        1.800 1.4396E-07
        2.000 3.3778E-07
        2.200 1.1205E-06
        2.400 3.3299E-06
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 25.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: 3.8e-06 1.33e-08 -3.17e-11 7.28e-07 9.35e-10 0.261
    nd: 1.723420
    Vd: 37.955602
    glass_code: 723380
    density: 3.67 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 6.6e-06 K<sup>-1</sup>
      - temperature_range: 20 300 °C
        coefficient: 7.3e-06 K<sup>-1</sup>
    dPgF: 0.0035
    climatic_resistance: 1.0
    acid_resistance: 4.0
    phosphate_resistance: 1.0
