# 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 2 
    wavelength_range: 0.3 2.4
    coefficients: 0 2.08122726 0.011190641 0.398632407 0.0521753272 2.21679491 141.893166
  - type: tabulated k
    data: |
        0.360 1.3193E-05
        0.370 4.0818E-06
        0.380 1.6472E-06
        0.390 8.5172E-07
        0.400 5.1731E-07
        0.420 2.5335E-07
        0.440 1.6122E-07
        0.460 1.2284E-07
        0.480 9.2791E-08
        0.500 6.8222E-08
        0.550 3.5155E-08
        0.600 1.9137E-08
        0.650 1.5541E-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 3.3473E-08
        1.600 3.8255E-08
        1.800 1.1505E-07
        2.000 3.8663E-07
        2.200 1.1766E-06
        2.400 4.7453E-06
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 25.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: 7.34e-06 0.0 0.0 0.0 0.0 0.0
    nd: 1.901355
    Vd: 31.550244
    glass_code: 901315
    glass_status: preferred
    density: 4.48 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 6e-06 K<sup>-1</sup>
      - temperature_range: 20 300 °C
        coefficient: 7.4e-06 K<sup>-1</sup>
    dPgF: 0.0042
    acid_resistance: 3.0
    phosphate_resistance: 1.0
