# 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: 0.29 2.4
    coefficients: 0 1.16195687 0.0159659509 0.644860099 0.000505502467 1.25062221 93.8284169
  - type: tabulated k
    data: |
        0.290 1.0628E-05
        0.300 7.6845E-06
        0.310 5.4451E-06
        0.320 3.8557E-06
        0.330 2.5409E-06
        0.340 1.6175E-06
        0.350 9.9342E-07
        0.360 5.6852E-07
        0.370 3.4312E-07
        0.380 2.0000E-07
        0.390 1.2669E-07
        0.400 8.7125E-08
        0.420 5.0514E-08
        0.440 4.2271E-08
        0.460 2.9402E-08
        0.480 2.2987E-08
        0.500 1.9944E-08
        0.550 1.3150E-08
        0.600 1.9137E-08
        0.650 1.5541E-08
        0.700 1.1152E-08
        0.800 1.2745E-08
        0.900 2.1518E-08
        1.000 3.1895E-08
        1.200 3.8274E-08
        1.400 8.9485E-08
        1.600 1.0227E-07
        1.800 2.3104E-07
        2.000 6.0004E-07
        2.200 2.0402E-06
        2.400 7.9358E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 3.38e-06 1.14e-08 -3.54e-11 3.51e-07 3.25e-10 0.264
    nd: 1.691002
    Vd: 54.822578
    glass_code: 691548
    density:
      - value: 3630
    thermal_expansion:
      - temperature_range: 243 343
        value: 6.1e-06
      - temperature_range: 293 573
        value: 7.4e-06
    dPgF: -0.0079
    resistance:
        climatic: 2.0
        acid: 52.0
        phosphate: 4.0