# 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: |
    
DATA:
  - type: formula 3
    wavelength_range: 0.28 2.4
    coefficients: 2.7037498 -0.011741892 2 0.0158996 -2 0.00061265364 -4 -4.6676845e-05 -6 2.6544952e-06 -8
  - type: tabulated k
    data: |
        0.280 1.0261E-05
        0.290 6.4926E-06
        0.300 4.2302E-06
        0.310 2.7350E-06
        0.320 1.7651E-06
        0.330 1.1313E-06
        0.340 7.0716E-07
        0.350 4.2007E-07
        0.360 2.3887E-07
        0.370 1.4793E-07
        0.380 9.5226E-08
        0.390 6.9040E-08
        0.400 5.1341E-08
        0.420 3.6968E-08
        0.440 3.5190E-08
        0.460 2.9402E-08
        0.480 1.9146E-08
        0.500 1.5947E-08
        0.550 8.7623E-09
        0.600 1.4345E-08
        0.650 1.5541E-08
        0.700 1.1152E-08
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -6.19e-07 1.33e-08 -4.63e-11 6.45e-07 4.57e-10 0.178
    nd: 1.658296
    Vd: 57.332589
    glass_code: 658573
    glass_status: special
    density:
      - value: 3900
    thermal_expansion:
      - temperature_range: 243 343
        value: 7.3e-06
      - temperature_range: 293 573
        value: 8.4e-06
    dPgF: -0.0037
    resistance:
        climatic: 4.0
        acid: 53.0
        phosphate: 4.2