# 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: |
    Low Softening Temperature 
DATA:
  - type: formula 2
    wavelength_range: 0.29 2.4
    coefficients: 0 1.50483297 0.0075034233 0.433346414 0.026900952 1.2714921 95.7631272
  - type: tabulated k
    data: |
        0.290 1.0628E-05
        0.300 6.0297E-06
        0.310 3.7352E-06
        0.320 2.3978E-06
        0.330 1.5226E-06
        0.340 9.6503E-07
        0.350 5.8690E-07
        0.360 3.6622E-07
        0.370 2.1367E-07
        0.380 1.5511E-07
        0.390 1.0736E-07
        0.400 8.3855E-08
        0.420 6.4114E-08
        0.440 5.2919E-08
        0.460 4.0489E-08
        0.480 3.0681E-08
        0.500 1.9944E-08
        0.550 1.3150E-08
        0.600 1.9137E-08
        0.650 2.0732E-08
        0.700 1.6736E-08
        0.800 1.2745E-08
        0.900 1.4338E-08
        1.000 1.5931E-08
        1.200 1.9118E-08
        1.400 3.3473E-08
        1.600 5.1032E-08
        1.800 1.2950E-07
        2.000 4.0295E-07
        2.200 1.2329E-06
        2.400 5.7507E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    nd: 1.733099
    Vd: 48.896607
    glass_code: 733489
    glass_status: special
    density:
      - value: 3890
    thermal_expansion:
      - temperature_range: 243 343
        value: 6.6e-06
      - temperature_range: 293 573
        value: 8e-06
    dPgF: -0.0093
    resistance:
        climatic: 3.0
        acid: 51.2
        phosphate: 1.2