# 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 1.34814257 0.00695364366 0.347530319 0.0277863478 1.38798368 142.138122
  - type: tabulated k
    data: |
        0.330 9.2084E-06
        0.340 4.4933E-06
        0.350 2.0443E-06
        0.360 9.8116E-07
        0.370 5.1336E-07
        0.380 2.8519E-07
        0.390 1.7557E-07
        0.400 1.1671E-07
        0.420 6.7523E-08
        0.440 5.6476E-08
        0.460 4.4192E-08
        0.480 3.4533E-08
        0.500 2.3945E-08
        0.550 1.7542E-08
        0.600 2.3933E-08
        0.650 2.5928E-08
        0.700 2.2326E-08
        0.800 1.9127E-08
        0.900 2.1518E-08
        1.000 3.1895E-08
        1.200 2.8691E-08
        1.400 5.5844E-08
        1.600 6.3822E-08
        1.800 1.5844E-07
        2.000 3.2154E-07
        2.200 9.5337E-07
        2.400 2.6597E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 3.67e-06 1.31e-08 -3.66e-11 4.35e-07 3.4e-10 0.271
    nd: 1.658441
    Vd: 50.877554
    glass_code: 658509
    density:
      - value: 3500
    thermal_expansion:
      - temperature_range: 243 343
        value: 6.8e-06
      - temperature_range: 293 573
        value: 8.2e-06
    dPgF: -0.0031
    resistance:
        climatic: 2.0
        acid: 5.2
        phosphate: 1.0