# 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 1.17447043 0.00841855181 0.0140056154 -0.0581790767 1.19272435 129.599726
  - type: tabulated k
    data: |
        0.280 4.5460E-06
        0.290 1.9477E-06
        0.300 7.5132E-07
        0.310 2.8748E-07
        0.320 1.0130E-07
        0.330 4.2357E-08
        0.340 2.1732E-08
        0.350 1.3961E-08
        0.360 1.4360E-08
        0.370 5.8946E-09
        0.380 6.0539E-09
        0.390 3.1051E-09
        0.400 3.1847E-09
        0.420 3.3439E-09
        0.440 3.5032E-09
        0.460 3.6624E-09
        0.480 3.8216E-09
        0.500 3.9809E-09
        0.550 4.3790E-09
        0.600 4.7770E-09
        0.650 5.1751E-09
        0.700 5.5732E-09
        0.800 6.3694E-09
        0.900 7.1656E-09
        1.000 1.5931E-08
        1.200 1.9118E-08
        1.400 2.0236E-07
        1.600 1.0227E-07
        1.800 2.1649E-07
        2.000 4.6837E-07
        2.200 2.2380E-06
        2.400 2.6597E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -6.61e-06 1.85e-08 -1.39e-11 4.98e-07 1.07e-09 0.0
    nd: 1.487490
    Vd: 70.236252
    glass_code: 487702
    density:
      - value: 2460
    thermal_expansion:
      - temperature_range: 243 343
        value: 9e-06
      - temperature_range: 293 573
        value: 9.5e-06
    dPgF: 0.0022
    resistance:
        climatic: 1.0
        acid: 3.0
        phosphate: 2.0