# 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: 2.9223334 -0.015268924 2 0.020070735 -2 0.00049690538 -4 -1.5326299e-05 -6 1.0772354e-06 -8
  - type: tabulated k
    data: |
        0.310 7.9406E-06
        0.320 5.3992E-06
        0.330 3.6405E-06
        0.340 2.4123E-06
        0.350 1.4696E-06
        0.360 9.0158E-07
        0.370 5.4862E-07
        0.380 3.5239E-07
        0.390 2.1856E-07
        0.400 1.4656E-07
        0.420 8.1192E-08
        0.440 6.0036E-08
        0.460 4.7899E-08
        0.480 3.4533E-08
        0.500 2.7950E-08
        0.550 2.1939E-08
        0.600 2.3933E-08
        0.650 2.0732E-08
        0.700 2.2326E-08
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 3.3e-06 1.19e-08 -1.31e-12 4.87e-07 4.79e-10 0.196
    nd: 1.725999
    Vd: 53.565698
    glass_code: 726536
    glass_status: preferred
    density:
      - value: 3910
    thermal_expansion:
      - temperature_range: 243 343
        value: 5.6e-06
      - temperature_range: 293 573
        value: 7e-06
    dPgF: -0.0091
    resistance:
        climatic: 2.0
        acid: 52.0
        phosphate: 3.0