# 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 1.81022611 0.013972897 0.447772917 0.0582195245 1.12017569 120.984115
  - type: tabulated k
    data: |
        0.360 7.2357E-06
        0.370 2.2231E-06
        0.380 7.9035E-07
        0.390 3.1323E-07
        0.400 1.5324E-07
        0.420 6.0709E-08
        0.440 3.5190E-08
        0.460 2.9402E-08
        0.480 1.9146E-08
        0.500 1.5947E-08
        0.550 8.7623E-09
        0.600 9.5589E-09
        0.650 1.5541E-08
        0.700 1.6736E-08
        0.800 1.2745E-08
        0.900 1.4338E-08
        1.000 7.9617E-09
        1.200 9.5541E-09
        1.400 3.3473E-08
        1.600 5.1032E-08
        1.800 2.8677E-08
        2.000 3.2154E-07
        2.200 8.2443E-07
        2.400 1.5096E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    nd: 1.849860
    Vd: 24.054274
    glass_code: 850241
    glass_status: preferred
    density:
      - value: 5510
    thermal_expansion:
      - temperature_range: 243 343
        value: 8e-06
      - temperature_range: 293 573
        value: 9.2e-06
    dPgF: 0.0122
    resistance:
        acid: 53.2
        phosphate: 4.0