# 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: 0.4 2.3
    coefficients: 0 1.95118827 0.00976560799 0.377607223 0.0382232043 1.47757262 112.23672
  - type: tabulated k
    data: |
        0.340 7.1950E-06
        0.350 3.2620E-06
        0.360 1.6104E-06
        0.370 8.8656E-07
        0.380 5.2723E-07
        0.390 3.6167E-07
        0.400 2.3100E-07
        0.420 1.2948E-07
        0.440 8.8648E-08
        0.460 6.2765E-08
        0.480 4.2250E-08
        0.500 2.7950E-08
        0.550 8.7623E-09
        0.600 4.7770E-09
        0.650 1.0355E-08
        0.700 5.5732E-09
        0.800 6.3694E-09
        0.900 7.1656E-09
        1.000 7.9617E-09
        1.200 9.5541E-09
        1.400 2.2304E-08
        1.600 3.8255E-08
        1.800 1.1505E-07
        2.000 4.0295E-07
        2.200 1.1205E-06
        2.400 4.7453E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 2.88e-06 9.71e-09 -1.22e-11 8.18e-07 8e-10 0.213
    nd: 1.851500
    Vd: 40.782269
    density:
      - value: 4700
    thermal_expansion:
      - temperature_range: 243 343
        value: 6.8e-06
    dPgF: -0.006
    resistance:
        climatic: 2.0
        acid: 4.0
        phosphate: 1.0