# 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: |
    Recommended 
DATA:
  - type: formula 2
    wavelength_range: 0.28 2.4
    coefficients: 0 0.992053895 0.0167095063 0.771377731 0.00236750156 1.18296264 105.90108
  - type: tabulated k
    data: |
        0.280 6.2688E-06
        0.290 4.3781E-06
        0.300 2.9552E-06
        0.310 1.9698E-06
        0.320 1.2587E-06
        0.330 8.2645E-07
        0.340 5.0414E-07
        0.350 3.2457E-07
        0.360 1.8336E-07
        0.370 1.1407E-07
        0.380 7.3460E-08
        0.390 5.0058E-08
        0.400 3.8428E-08
        0.420 2.6846E-08
        0.440 2.1072E-08
        0.460 1.8349E-08
        0.480 1.1476E-08
        0.500 7.9657E-09
        0.550 4.3790E-09
        0.600 9.5589E-09
        0.650 1.0355E-08
        0.700 1.1152E-08
        0.800 6.3694E-09
        0.900 2.1518E-08
        1.000 3.1895E-08
        1.200 3.8274E-08
        1.400 1.0072E-07
        1.600 1.1511E-07
        1.800 2.7477E-07
        2.000 6.0004E-07
        2.200 1.8251E-06
        2.400 6.0105E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -2.18e-06 1.12e-08 -3.73e-11 3.25e-07 4.77e-10 0.27
    nd: 1.677900
    Vd: 55.341195
    glass_code: 678553
    density:
      - value: 4010
    thermal_expansion:
      - temperature_range: 243 343
        value: 7.2e-06
      - temperature_range: 293 573
        value: 8.6e-06
    dPgF: -0.0047
    resistance:
        climatic: 2.0
        acid: 53.0
        phosphate: 4.2