# 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: 0.29 2.4
    coefficients: 0 0.996356844 0.0144821587 0.651392837 0.00154826389 1.22432622 89.9818604
  - type: tabulated k
    data: |
        0.290 1.0628E-05
        0.300 8.3713E-06
        0.310 5.6803E-06
        0.320 3.9742E-06
        0.330 2.5409E-06
        0.340 1.5688E-06
        0.350 9.5391E-07
        0.360 5.6852E-07
        0.370 3.4312E-07
        0.380 2.0647E-07
        0.390 1.3641E-07
        0.400 9.6955E-08
        0.420 6.4114E-08
        0.440 5.2919E-08
        0.460 4.0489E-08
        0.480 3.0681E-08
        0.500 1.9944E-08
        0.550 2.1939E-08
        0.600 3.8351E-08
        0.650 3.6335E-08
        0.700 2.7922E-08
        0.800 1.9127E-08
        0.900 2.1518E-08
        1.000 3.1895E-08
        1.200 3.8274E-08
        1.400 7.8260E-08
        1.600 7.6624E-08
        1.800 2.1649E-07
        2.000 6.3313E-07
        2.200 2.4381E-06
        2.400 9.4404E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 2.81e-06 1.37e-08 -4.03e-11 3.96e-07 7.56e-10 0.182
    nd: 1.639999
    Vd: 60.078127
    glass_code: 640601
    density:
      - value: 3060
    thermal_expansion:
      - temperature_range: 243 343
        value: 5.8e-06
      - temperature_range: 293 573
        value: 7.2e-06
    dPgF: -0.0073
    resistance:
        climatic: 3.0
        acid: 53.0
        phosphate: 4.0