# 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 0.945443081 0.0157263798 0.643237376 0.00161924066 1.17752968 121.361748
  - type: tabulated k
    data: |
        0.310 6.2307E-06
        0.320 2.9824E-06
        0.330 1.4762E-06
        0.340 7.7836E-07
        0.350 4.2007E-07
        0.360 2.1098E-07
        0.370 1.1407E-07
        0.380 7.0363E-08
        0.390 4.3756E-08
        0.400 2.8778E-08
        0.420 2.0114E-08
        0.440 1.7551E-08
        0.460 1.4672E-08
        0.480 1.1476E-08
        0.500 7.9657E-09
        0.550 8.7623E-09
        0.600 9.5589E-09
        0.650 1.5541E-08
        0.700 1.1152E-08
        0.800 1.2745E-08
        0.900 1.4338E-08
        1.000 2.3909E-08
        1.200 2.8691E-08
        1.400 1.1197E-07
        1.600 8.9440E-08
        1.800 2.1649E-07
        2.000 4.6837E-07
        2.200 1.5935E-06
        2.400 3.7901E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 1.16e-06 1.34e-08 -3.75e-11 4.33e-07 3.86e-10 0.213
    nd: 1.622799
    Vd: 57.052723
    glass_code: 623570
    density:
      - value: 3600
    thermal_expansion:
      - temperature_range: 243 343
        value: 6.5e-06
      - temperature_range: 293 573
        value: 7.6e-06
    dPgF: -0.0028
    resistance:
        climatic: 2.0
        acid: 51.2
        phosphate: 1.0