# 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: 0.33 2.4
    coefficients: 0 1.0996655 0.0132718559 0.478125422 -0.000601649685 1.13214074 130.595472
  - type: tabulated k
    data: |
        0.330 7.8670E-06
        0.340 3.7508E-06
        0.350 1.8754E-06
        0.360 9.4109E-07
        0.370 4.7852E-07
        0.380 2.4230E-07
        0.390 1.3641E-07
        0.400 8.3855E-08
        0.420 4.7122E-08
        0.440 3.5190E-08
        0.460 2.9402E-08
        0.480 2.2987E-08
        0.500 1.5947E-08
        0.550 8.7623E-09
        0.600 9.5589E-09
        0.650 1.0355E-08
        0.700 1.1152E-08
        0.800 1.9127E-08
        0.900 2.8705E-08
        1.000 3.1895E-08
        1.200 3.8274E-08
        1.400 4.4653E-08
        1.600 1.1511E-07
        1.800 3.0401E-07
        2.000 6.3313E-07
        2.200 1.3460E-06
        2.400 2.2256E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -1.15e-05 5.4e-09 -3.69e-11 4.44e-07 9.12e-10 0.166
    nd: 1.618000
    Vd: 63.333504
    glass_code: 618634
    density:
      - value: 3670
    thermal_expansion:
      - temperature_range: 243 343
        value: 1.01e-05
      - temperature_range: 293 573
        value: 1.2e-05
    dPgF: 0.0051
    resistance:
        climatic: 2.0
        acid: 5.0
        phosphate: 4.0