# 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: 0.31 2.4
    coefficients: 0 1.39280586 0.00608475118 0.679577094 0.0233925351 1.38702069 95.8354094
  - type: tabulated k
    data: |
        0.310 5.6803E-06
        0.320 2.8232E-06
        0.330 1.5700E-06
        0.340 9.2665E-07
        0.350 5.8690E-07
        0.360 3.6622E-07
        0.370 2.1367E-07
        0.380 1.3607E-07
        0.390 9.1333E-08
        0.400 6.7557E-08
        0.420 4.3734E-08
        0.440 3.1655E-08
        0.460 2.2030E-08
        0.480 1.5310E-08
        0.500 1.1955E-08
        0.550 4.3790E-09
        0.600 9.5589E-09
        0.650 1.0355E-08
        0.700 5.5732E-09
        0.800 1.2745E-08
        0.900 1.4338E-08
        1.000 1.5931E-08
        1.200 2.8691E-08
        1.400 7.8260E-08
        1.600 8.9440E-08
        1.800 2.4560E-07
        2.000 6.8289E-07
        2.200 2.2380E-06
        2.400 8.5235E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 3.03e-06 1.36e-08 -3.27e-11 5e-07 6.02e-10 0.218
    nd: 1.772499
    Vd: 49.598371
    glass_code: 773496
    density:
      - value: 4230
    thermal_expansion:
      - temperature_range: 243 343
        value: 6.2e-06
      - temperature_range: 293 573
        value: 7.4e-06
    dPgF: -0.0092
    resistance:
        climatic: 1.0
        acid: 51.2
        phosphate: 1.0