# 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: 0.28 2.4
    coefficients: 0 1.2372097 0.015355132 0.589722623 -0.00030789625 1.3192188 93.7202947
  - type: tabulated k
    data: |
        0.280 7.8132E-06
        0.290 6.1369E-06
        0.300 4.5290E-06
        0.310 3.2300E-06
        0.320 2.2704E-06
        0.330 1.5226E-06
        0.340 9.6503E-07
        0.350 5.8690E-07
        0.360 3.6622E-07
        0.370 2.1051E-07
        0.380 1.2660E-07
        0.390 8.1759E-08
        0.400 5.7818E-08
        0.420 3.3591E-08
        0.440 2.4596E-08
        0.460 1.8349E-08
        0.480 1.1476E-08
        0.500 7.9657E-09
        0.550 8.7623E-09
        0.600 1.4345E-08
        0.650 1.5541E-08
        0.700 1.1152E-08
        0.800 1.2745E-08
        0.900 1.4338E-08
        1.000 1.5931E-08
        1.200 1.9118E-08
        1.400 1.0072E-07
        1.600 1.0227E-07
        1.800 2.6018E-07
        2.000 7.4949E-07
        2.200 2.6405E-06
        2.400 1.0077E-05
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 3.12e-06 1.19e-08 2.67e-12 4.01e-07 8.06e-10 0.216
    nd: 1.696797
    Vd: 55.532241
    glass_code: 697555
    density:
      - value: 3700
    thermal_expansion:
      - temperature_range: 243 343
        value: 5.7e-06
      - temperature_range: 293 573
        value: 7.1e-06
    dPgF: -0.0082
    resistance:
        climatic: 1.0
        acid: 52.2
        phosphate: 3.0