# 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: 0.34 2.4
    coefficients: 0 1.43822841 0.0085977975 0.128100017 0.0408617854 1.3435553 143.70989
  - type: tabulated k
    data: |
        0.340 1.0585E-05
        0.350 3.9748E-06
        0.360 1.7652E-06
        0.370 8.8656E-07
        0.380 4.9145E-07
        0.390 2.6553E-07
        0.400 1.6327E-07
        0.420 8.4619E-08
        0.440 6.3599E-08
        0.460 4.7899E-08
        0.480 3.8389E-08
        0.500 2.7950E-08
        0.550 1.3150E-08
        0.600 1.9137E-08
        0.650 2.0732E-08
        0.700 1.6736E-08
        0.800 1.9127E-08
        0.900 2.1518E-08
        1.000 3.1895E-08
        1.200 3.8274E-08
        1.400 6.7046E-08
        1.600 6.3822E-08
        1.800 1.7293E-07
        2.000 3.5405E-07
        2.200 1.0089E-06
        2.400 2.4414E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -2.01e-06 1.24e-08 -3.72e-11 4.79e-07 4.64e-10 0.264
    nd: 1.617722
    Vd: 49.815052
    glass_code: 618498
    density:
      - value: 3230
    thermal_expansion:
      - temperature_range: 243 343
        value: 8.4e-06
      - temperature_range: 293 573
        value: 9.6e-06
    dPgF: -0.0006
    resistance:
        climatic: 3.0
        acid: 51.2
        phosphate: 3.0