# 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="https://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="https://refractiveindex.info/download/data/2017/ohara_2017-11-30.pdf">OHARA glass data sheets</a>
COMMENTS: |
    Low Softening Temperature 
DATA:
  - type: formula 2
    wavelength_range: 0.31 2.4
    coefficients: 0 1.82331579 0.00911468875 0.548625885 0.032841967 1.63182855 123.611174
  - type: tabulated k
    data: |
        0.310 8.6503E-06
        0.320 4.8310E-06
        0.330 2.9114E-06
        0.340 1.8218E-06
        0.350 1.1573E-06
        0.360 7.4875E-07
        0.370 4.7852E-07
        0.380 2.8519E-07
        0.390 2.1523E-07
        0.400 1.6327E-07
        0.420 1.1561E-07
        0.440 8.8648E-08
        0.460 6.6490E-08
        0.480 4.6114E-08
        0.500 3.1959E-08
        0.550 1.3150E-08
        0.600 1.4345E-08
        0.650 1.5541E-08
        0.700 1.1152E-08
        0.800 1.2745E-08
        0.900 1.4338E-08
        1.000 1.5931E-08
        1.200 1.9118E-08
        1.400 3.3473E-08
        1.600 5.1032E-08
        1.800 1.2950E-07
        2.000 3.7033E-07
        2.200 9.7186E-07
        2.400 3.7901E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 3.99e-06 9.76e-09 -1.73e-11 7.56e-07 7.71e-10 0.225
    nd: 1.864000
    Vd: 40.577742
    glass_code: 864406
    glass_status: special
    density:
      - value: 5290
    thermal_expansion:
      - temperature_range: 243 343
        value: 6.8e-06
      - temperature_range: 293 573
        value: 8e-06
    dPgF: -0.0089
    resistance:
        climatic: 3.0
        acid: 3.2
        phosphate: 1.0