# 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: |
    
DATA:
  - type: formula 2
    wavelength_range: 0.3 2.4
    coefficients: 0 1.47867898 0.00869705653 0.0899501399 0.0399353993 1.03056525 108.550949
  - type: tabulated k
    data: |
        0.340 4.7943E-06
        0.350 1.7683E-06
        0.360 7.1179E-07
        0.370 3.2005E-07
        0.380 1.8711E-07
        0.390 1.0736E-07
        0.400 6.7557E-08
        0.420 3.6968E-08
        0.440 2.8124E-08
        0.460 2.5714E-08
        0.480 1.9146E-08
        0.500 1.5947E-08
        0.550 8.7623E-09
        0.600 1.4345E-08
        0.650 1.5541E-08
        0.700 1.6736E-08
        0.800 1.2745E-08
        0.900 1.4338E-08
CONDITIONS:
    temperature: 298
PROPERTIES:
    nd: 1.617195
    Vd: 54.062144
    glass_code: 617540
    glass_status: preferred
    density:
      - value: 3490
    thermal_expansion:
      - temperature_range: 243 343
        value: 6.5e-06
      - temperature_range: 293 573
        value: 7.6e-06
    dPgF: -0.0013
    resistance:
        climatic: 2.0
        acid: 1.0
        phosphate: 1.0