# 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: 0.32 2.4
    coefficients: 0 0.821314256 0.00351436131 0.612586478 0.0179762375 1.24859637 133.45667
  - type: tabulated k
    data: |
        0.320 1.1727E-05
        0.330 3.7477E-06
        0.340 1.3374E-06
        0.350 4.8561E-07
        0.360 2.0175E-07
        0.370 9.8803E-08
        0.380 5.4927E-08
        0.390 3.4328E-08
        0.400 2.2360E-08
        0.420 1.6753E-08
        0.440 1.4034E-08
        0.460 1.0998E-08
        0.480 7.6471E-09
        0.500 7.9657E-09
        0.550 4.3790E-09
        0.600 4.7770E-09
        0.650 1.0355E-08
        0.700 5.5732E-09
        0.800 6.3694E-09
        0.900 7.1656E-09
        1.000 1.5931E-08
        1.200 1.9118E-08
        1.400 1.2323E-07
        1.600 6.3822E-08
        1.800 1.7293E-07
        2.000 3.3778E-07
        2.200 1.2893E-06
        2.400 2.2256E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 3.44e-06 1.26e-08 -4.45e-11 5.04e-07 6.25e-10 0.192
    nd: 1.572501
    Vd: 57.742980
    glass_code: 573578
    glass_status: special
    density:
      - value: 3020
    thermal_expansion:
      - temperature_range: 243 343
        value: 6.6e-06
      - temperature_range: 293 573
        value: 8e-06
    dPgF: -0.0024
    resistance:
        climatic: 2.0
        acid: 2.0
        phosphate: 1.0