# 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: |
    Low Softening Temperature 
DATA:
  - type: formula 2
    wavelength_range: 0.31 2.4
    coefficients: 0 1.07570798 0.00591654042 0.335020347 0.0203432769 0.810997558 106.182158
  - type: tabulated k
    data: |
        0.310 6.9404E-06
        0.320 2.5318E-06
        0.330 9.3665E-07
        0.340 3.4587E-07
        0.350 1.3701E-07
        0.360 5.4955E-08
        0.370 2.9592E-08
        0.380 1.8198E-08
        0.390 1.2439E-08
        0.400 1.2758E-08
        0.420 1.3396E-08
        0.440 1.4034E-08
        0.460 1.0998E-08
        0.480 1.1476E-08
        0.500 7.9657E-09
        0.550 4.3790E-09
        0.600 4.7770E-09
        0.650 5.1751E-09
        0.700 5.5732E-09
        0.800 6.3694E-09
        0.900 7.1656E-09
        1.000 7.9617E-09
        1.200 9.5541E-09
        1.400 2.2304E-08
        1.600 1.7951E-07
        1.800 6.5953E-07
        2.000 1.2752E-06
        2.200 2.6405E-06
        2.400 3.5586E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -5.46e-06 7.3e-09 -4.11e-11 5.89e-07 6.92e-10 0.202
    nd: 1.564550
    Vd: 60.818065
    glass_code: 565608
    glass_status: preferred
    density:
      - value: 3180
    thermal_expansion:
      - temperature_range: 243 343
        value: 1.05e-05
      - temperature_range: 293 573
        value: 1.4e-05
    dPgF: 0.0026
    resistance:
        climatic: 3.0
        acid: 53.3
        phosphate: 4.3