# 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: 2.737477 -0.013153125 2 0.023895273 -2 0.0011078302 -4 -4.881918e-05 -6 5.4773972e-06 -8
  - type: tabulated k
    data: |
        0.330 1.0273E-05
        0.340 5.5201E-06
        0.350 3.3533E-06
        0.360 2.0436E-06
        0.370 1.2234E-06
        0.380 7.1281E-07
        0.390 4.3220E-07
        0.400 2.5160E-07
        0.420 8.8048E-08
        0.440 4.2271E-08
        0.460 2.5714E-08
        0.480 1.5310E-08
        0.500 1.1955E-08
        0.550 8.7623E-09
        0.600 9.5589E-09
        0.650 1.0355E-08
        0.700 1.1152E-08
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 25.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: 1.01e-05 0.0 0.0 0.0 0.0 0.0
    nd: 1.676498
    Vd: 37.537388
    glass_code: 677375
    glass_status: preferred
    density: 3.76 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 5.3e-06 K<sup>-1</sup>
      - temperature_range: 20 300 °C
        coefficient: 6.4e-06 K<sup>-1</sup>
    dPgF: -0.0045
    acid_resistance: 52.1
    phosphate_resistance: 4.1
