# 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: 0.35 2.4
    coefficients: 0 1.73442942 0.0100690928 0.15155391 0.0470634701 1.46225433 140.084396
  - type: tabulated k
    data: |
        0.350 6.4132E-06
        0.360 2.6975E-06
        0.370 1.2684E-06
        0.380 6.7477E-07
        0.390 3.9673E-07
        0.400 2.3100E-07
        0.420 1.1908E-07
        0.440 8.1473E-08
        0.460 5.9043E-08
        0.480 4.6114E-08
        0.500 3.1959E-08
        0.550 1.7542E-08
        0.600 1.9137E-08
        0.650 2.5928E-08
        0.700 1.6736E-08
        0.800 1.2745E-08
        0.900 2.1518E-08
        1.000 2.3909E-08
        1.200 1.9118E-08
        1.400 3.3473E-08
        1.600 5.1032E-08
        1.800 1.4396E-07
        2.000 3.3778E-07
        2.200 9.5337E-07
        2.400 3.1039E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -1.33e-06 1.04e-08 -3.33e-11 6.18e-07 7.64e-10 0.246
    nd: 1.720000
    Vd: 43.689812
    glass_code: 720437
    density:
      - value: 3950
    thermal_expansion:
      - temperature_range: 243 343
        value: 7.7e-06
      - temperature_range: 293 573
        value: 8.8e-06
    dPgF: -0.0009
    resistance:
        climatic: 2.0
        acid: 51.2
        phosphate: 1.2