# 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: 0.3 2.4
    coefficients: 2.56958 -0.0086466584 2 0.016903144 -2 7.624944e-05 -4 2.6138532e-05 -6 -7.4670354e-07 -8
  - type: tabulated k
    data: |
        0.320 8.9294E-06
        0.330 4.2265E-06
        0.340 2.1605E-06
        0.350 1.1573E-06
        0.360 6.3926E-07
        0.370 3.4312E-07
        0.380 2.0647E-07
        0.390 1.3641E-07
        0.400 8.0589E-08
        0.420 4.3734E-08
        0.440 3.8729E-08
        0.460 2.9402E-08
        0.480 2.2987E-08
        0.500 1.9944E-08
        0.550 1.3150E-08
        0.600 1.9137E-08
        0.650 2.5928E-08
        0.700 2.7922E-08
        0.800 3.8312E-08
        0.900 5.7526E-08
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 5.26e-06 0.0 0.0 0.0 0.0 0.0
    nd: 1.617646
    Vd: 55.049782
    glass_code: 618551
    glass_status: preferred
    density:
      - value: 3630
    thermal_expansion:
      - temperature_range: 243 343
        value: 6.5e-06
      - temperature_range: 293 573
        value: 7.6e-06
    dPgF: -0.0021
    resistance:
        acid: 51.2
        phosphate: 2.2