# 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: 0.3 2.4
    coefficients: 2.5743849 -0.010002464 2 0.02166382 -2 0.0013463294 -4 -8.3887231e-05 -6 7.8154722e-06 -8
  - type: tabulated k
    data: |
        0.320 9.9619E-06
        0.330 3.1617E-06
        0.340 1.2075E-06
        0.350 5.5273E-07
        0.360 2.7018E-07
        0.370 1.4793E-07
        0.380 9.5226E-08
        0.390 5.0058E-08
        0.400 2.8778E-08
        0.420 1.6753E-08
        0.440 1.7551E-08
        0.460 1.4672E-08
        0.480 1.1476E-08
        0.500 1.1955E-08
        0.550 8.7623E-09
        0.600 9.5589E-09
        0.650 1.5541E-08
        0.700 1.1152E-08
        0.800 6.3694E-09
        0.900 7.1656E-09
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 25.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: 4.19e-06 0.0 0.0 0.0 0.0 0.0
    nd: 1.625882
    Vd: 35.700668
    glass_code: 626357
    glass_status: preferred
    density: 3.65 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 8.9e-06 K<sup>-1</sup>
      - temperature_range: 20 300 °C
        coefficient: 9.7e-06 K<sup>-1</sup>
    dPgF: 0.0005
    acid_resistance: 1.0
    phosphate_resistance: 2.0
