# 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: 0.28 2.4
    coefficients: 0 0.916121247 0.00395889743 0.765948319 0.0167547425 1.27745023 110.762706
  - type: tabulated k
    data: |
        0.280 5.3653E-06
        0.290 3.4942E-06
        0.300 2.3099E-06
        0.310 1.4748E-06
        0.320 9.4491E-07
        0.330 5.8599E-07
        0.340 3.4587E-07
        0.350 2.0512E-07
        0.360 1.2591E-07
        0.370 7.7566E-08
        0.380 4.8774E-08
        0.390 3.1191E-08
        0.400 2.5567E-08
        0.420 2.0114E-08
        0.440 1.7551E-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 1.4338E-08
        1.000 1.5931E-08
        1.200 2.8691E-08
        1.400 1.0072E-07
        1.600 8.9440E-08
        1.800 2.3104E-07
        2.000 5.1762E-07
        2.200 1.7863E-06
        2.400 5.7507E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 5.43e-08 1.3e-08 -3.43e-11 3.49e-07 4.29e-10 0.237
    nd: 1.651597
    Vd: 58.550655
    glass_code: 652585
    density:
      - value: 3730
    thermal_expansion:
      - temperature_range: 243 343
        value: 6.7e-06
      - temperature_range: 293 573
        value: 8.1e-06
    dPgF: -0.0042
    resistance:
        climatic: 2.0
        acid: 53.0
        phosphate: 4.0