# 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 2
    wavelength_range: 0.3 2.4
    coefficients: 0 1.626945 0.008757497 0.1906681 0.03779724 1.281079 123.7784
  - type: tabulated k
    data: |
        0.340 8.7091E-06
        0.350 3.5455E-06
        0.360 1.5116E-06
        0.370 7.3156E-07
        0.380 3.8656E-07
        0.390 2.2189E-07
        0.400 1.4323E-07
        0.420 7.7770E-08
        0.440 5.6476E-08
        0.460 4.4192E-08
        0.480 3.0681E-08
        0.500 2.3945E-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 2.1518E-08
        1.000 3.1895E-08
        1.200 3.8274E-08
        1.400 7.8260E-08
        1.600 1.0227E-07
        1.800 2.4560E-07
        2.400 4.3095E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -5.171e-07 0.0 0.0 0.0 0.0 0.0
    nd: 1.697002
    Vd: 48.535864
    glass_code: 697485
    glass_status: preferred
    density:
      - value: 4059
    thermal_expansion:
      - temperature_range: 243 343
        value: 7.5e-06
      - temperature_range: 293 573
        value: 9e-06
    dPgF: -0.0019
    resistance:
        acid: 53.2
        phosphate: 3.2