# 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 1.0828017 0.018115636 0.933988681 0.00304157575 1.32367286 91.0353195
  - type: tabulated k
    data: |
        0.280 7.8132E-06
        0.290 4.8930E-06
        0.300 3.7258E-06
        0.310 3.5206E-06
        0.320 1.9226E-06
        0.330 1.2981E-06
        0.340 8.5149E-07
        0.350 5.5273E-07
        0.360 3.6622E-07
        0.370 2.1367E-07
        0.380 1.3607E-07
        0.390 8.8138E-08
        0.400 6.4307E-08
        0.420 4.0350E-08
        0.440 3.1655E-08
        0.460 2.2030E-08
        0.480 1.5310E-08
        0.500 1.1955E-08
        0.550 8.7623E-09
        0.600 9.5589E-09
        0.650 1.0355E-08
        0.700 1.1152E-08
        0.800 1.2745E-08
        0.900 1.4338E-08
        1.000 2.3909E-08
        1.200 2.8691E-08
        1.400 7.8260E-08
        1.600 8.9440E-08
        1.800 2.3104E-07
        2.000 6.8289E-07
        2.200 2.2380E-06
        2.400 9.1298E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 3.86e-06 1.38e-08 -1.69e-12 5.51e-07 6.54e-10 0.17
    nd: 1.754998
    Vd: 52.321434
    glass_code: 755523
    density:
      - value: 4400
    thermal_expansion:
      - temperature_range: 243 343
        value: 5.8e-06
      - temperature_range: 293 573
        value: 7e-06
    dPgF: -0.0093
    resistance:
        climatic: 1.0
        acid: 51.0
        phosphate: 2.0