# 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 - The unique relative partial dispersion.
DATA:
  - type: formula 2
    wavelength_range: 0.28 2.4
    coefficients: 0 1.17010505 0.00616203924 0.0475710783 0.0263372876 0.763832445 141.882642
  - type: tabulated k
    data: |
        0.280 1.0261E-05
        0.290 6.9134E-06
        0.300 4.2302E-06
        0.310 2.4527E-06
        0.320 1.3008E-06
        0.330 6.8636E-07
        0.340 3.4587E-07
        0.350 1.5167E-07
        0.360 7.2530E-08
        0.370 3.5546E-08
        0.380 1.8198E-08
        0.390 1.2439E-08
        0.400 1.5955E-08
        0.420 2.0114E-08
        0.440 2.1072E-08
        0.460 1.4672E-08
        0.480 1.1476E-08
        0.500 7.9657E-09
        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 7.1656E-09
        1.000 7.9617E-09
        1.200 9.5541E-09
        1.400 1.1146E-08
        1.600 1.2739E-08
        1.800 1.4331E-08
        2.000 1.5923E-08
        2.200 5.2600E-08
        2.400 7.6548E-08
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -1.91e-05 -4.44e-09 -4.62e-11 3.74e-07 4.39e-10 0.163
    nd: 1.496999
    Vd: 81.545888
    glass_code: 497816
    density:
      - value: 3620
    thermal_expansion:
      - temperature_range: 243 343
        value: 1.31e-05
      - temperature_range: 293 573
        value: 1.55e-05
    dPgF: 0.028
    resistance:
        climatic: 1.0
        acid: 52.1
        phosphate: 4.0