# 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: 0.31 2.4
    coefficients: 0 1.47574184 0.0073695 0.496132743 0.0251891746 1.23796236 98.0306651
  - type: tabulated k
    data: |
        0.310 5.9402E-06
        0.320 2.8232E-06
        0.330 1.5226E-06
        0.340 8.8881E-07
        0.350 5.1897E-07
        0.360 3.0184E-07
        0.370 1.8218E-07
        0.380 9.2107E-08
        0.390 7.2215E-08
        0.400 5.4578E-08
        0.420 4.0350E-08
        0.440 3.1655E-08
        0.460 2.5714E-08
        0.480 1.5310E-08
        0.500 1.1955E-08
        0.550 8.7623E-09
        0.600 9.5589E-09
        0.650 1.0355E-08
        0.700 5.5732E-09
        0.800 6.3694E-09
        0.900 7.1656E-09
        1.000 7.9617E-09
        1.200 9.5541E-09
        1.400 2.2304E-08
        1.600 3.8255E-08
        1.800 1.2950E-07
        2.000 4.1928E-07
        2.200 1.1579E-06
        2.400 5.4943E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 2.32e-06 7.99e-09 -3.51e-11 6.6e-07 8.15e-10 0.191
    nd: 1.743198
    Vd: 49.295578
    glass_code: 743493
    density:
      - value: 4200
    thermal_expansion:
      - temperature_range: 243 343
        value: 7.4e-06
      - temperature_range: 293 573
        value: 9.2e-06
    dPgF: -0.0088
    resistance:
        climatic: 3.0
        acid: 51.2
        phosphate: 2.0