# 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 3
    wavelength_range: 0.3 2.4
    coefficients: 2.5858505 -0.011425977 2 0.013924703 -2 0.00050343054 -4 -3.6074659e-05 -6 1.9912627e-06 -8
  - type: tabulated k
    data: |
        0.300 5.4970E-06
        0.310 3.5206E-06
        0.320 2.2091E-06
        0.330 1.3415E-06
        0.340 8.1468E-07
        0.350 4.5265E-07
        0.360 2.6389E-07
        0.370 1.5723E-07
        0.380 9.8348E-08
        0.390 6.5868E-08
        0.400 4.4878E-08
        0.420 2.6846E-08
        0.440 2.4596E-08
        0.460 1.8349E-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
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 2.256e-06 0.0 0.0 0.0 0.0 0.0
    nd: 1.620410
    Vd: 60.254106
    glass_code: 620603
    glass_status: preferred
    density:
      - value: 3570
    thermal_expansion:
      - temperature_range: 243 343
        value: 6.3e-06
      - temperature_range: 293 573
        value: 7.4e-06
    dPgF: -0.0014
    resistance:
        acid: 52.2
        phosphate: 3.2