# 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: 0.32 2.4
    coefficients: 0 1.78764964 0.00847378536 0.6526356 0.0313126408 1.79914564 132.788001
  - type: tabulated k
    data: |
        0.320 7.6286E-06
        0.330 4.6533E-06
        0.340 2.9189E-06
        0.350 1.8754E-06
        0.360 1.1904E-06
        0.370 7.6955E-07
        0.380 5.2723E-07
        0.390 3.6167E-07
        0.400 2.5160E-07
        0.420 1.6792E-07
        0.440 1.2475E-07
        0.460 9.6434E-08
        0.480 6.9381E-08
        0.500 4.8035E-08
        0.550 2.1939E-08
        0.600 2.3933E-08
        0.650 2.5928E-08
        0.700 2.7922E-08
        0.800 3.1911E-08
        0.900 3.5900E-08
        1.000 3.9889E-08
        1.200 3.8274E-08
        1.400 4.4653E-08
        1.600 5.1032E-08
        1.800 1.1505E-07
        2.000 3.2154E-07
        2.200 7.8777E-07
        2.400 3.3299E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 2.37e-06 1.28e-08 -3.08e-11 6.33e-07 5.04e-10 0.248
    nd: 1.882997
    Vd: 40.765107
    glass_code: 883408
    density:
      - value: 5520
    thermal_expansion:
      - temperature_range: 243 343
        value: 6.6e-06
      - temperature_range: 293 573
        value: 7.8e-06
    dPgF: -0.0088
    resistance:
        climatic: 1.0
        acid: 2.2
        phosphate: 1.0