# 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 1.498643 0.009643255 0.2175678 0.04511666 1.559728 171.1121
  - type: tabulated k
    data: |
        0.330 8.4529E-06
        0.340 3.1688E-06
        0.350 1.2869E-06
        0.360 6.0367E-07
        0.370 3.4312E-07
        0.380 2.0971E-07
        0.390 1.4615E-07
        0.400 1.0352E-07
        0.420 6.0709E-08
        0.440 4.5817E-08
        0.460 3.3094E-08
        0.480 2.2987E-08
        0.500 1.5947E-08
        0.550 4.3790E-09
        0.600 9.5589E-09
        0.650 1.0355E-08
        0.700 1.1152E-08
        0.800 6.3694E-09
        0.900 1.4338E-08
        1.000 1.5931E-08
        1.200 2.8691E-08
        1.400 7.8260E-08
        1.600 6.3822E-08
        1.800 1.7293E-07
        2.400 1.4454E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 6.7962e-06 0.0 0.0 0.0 0.0 0.0
    nd: 1.669979
    Vd: 39.279752
    glass_code: 670393
    glass_status: preferred
    density:
      - value: 4019
    thermal_expansion:
      - temperature_range: 243 343
        value: 7e-06
      - temperature_range: 293 573
        value: 8.1e-06
    resistance:
        acid: 1.2
        phosphate: 1.0