# 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: 0.31 2.4
    coefficients: 0 1.14490383 0.0137034916 0.439563911 -0.00186514205 1.27688079 119.535585
  - type: tabulated k
    data: |
        0.310 1.1361E-05
        0.320 4.3667E-06
        0.330 1.8733E-06
        0.340 8.8881E-07
        0.350 4.5265E-07
        0.360 2.2644E-07
        0.370 1.2326E-07
        0.380 7.3460E-08
        0.390 5.0058E-08
        0.400 3.5208E-08
        0.420 2.6846E-08
        0.440 2.4596E-08
        0.460 2.2030E-08
        0.480 1.5310E-08
        0.500 1.1955E-08
        0.550 4.3790E-09
        0.600 9.5589E-09
        0.650 1.5541E-08
        0.700 1.1152E-08
        0.800 6.3694E-09
        0.900 7.1656E-09
        1.000 7.9617E-09
        1.200 9.5541E-09
        1.400 8.9485E-08
        1.600 6.3822E-08
        1.800 1.8743E-07
        2.000 4.5199E-07
        2.200 1.6319E-06
        2.400 4.5020E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -5.59e-07 1.35e-08 -3.47e-11 4e-07 5.04e-10 0.201
    nd: 1.620411
    Vd: 60.289582
    glass_code: 620603
    density:
      - value: 3590
    thermal_expansion:
      - temperature_range: 243 343
        value: 6.7e-06
      - temperature_range: 293 573
        value: 7.6e-06
    dPgF: -0.0012
    resistance:
        climatic: 2.0
        acid: 53.2
        phosphate: 4.2