# 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: 0.34 2.4
    coefficients: 0 1.83606127 0.00981969903 0.341720032 0.0385636264 1.35280173 107.04553
  - type: tabulated k
    data: |
        0.340 4.3545E-06
        0.350 1.7162E-06
        0.360 7.8620E-07
        0.370 4.1004E-07
        0.380 2.4557E-07
        0.390 1.5919E-07
        0.400 1.1340E-07
        0.420 7.0935E-08
        0.440 5.2919E-08
        0.460 3.6790E-08
        0.480 2.6832E-08
        0.500 1.5947E-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 1.1505E-07
        2.000 4.0295E-07
        2.200 1.0460E-06
        2.400 4.5020E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 8.14e-06 9.68e-09 -3.1e-12 8.24e-07 8.84e-10 0.23
    nd: 1.808350
    Vd: 40.548503
    density:
      - value: 4620
    thermal_expansion:
      - temperature_range: 243 343
        value: 6e-06
    dPgF: -0.007
    resistance:
        climatic: 2.0
        acid: 51.3
        phosphate: 2.2