# 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: 0.33 2.4
    coefficients: 0 1.27553696 0.00749692359 0.146083393 0.031042153 1.16754699 128.947092
  - type: tabulated k
    data: |
        0.330 6.3234E-06
        0.340 2.2213E-06
        0.350 8.3864E-07
        0.360 3.6622E-07
        0.370 1.6345E-07
        0.380 9.2107E-08
        0.390 5.3213E-08
        0.400 3.5208E-08
        0.420 2.6846E-08
        0.440 2.4596E-08
        0.460 2.2030E-08
        0.480 1.9146E-08
        0.500 1.1955E-08
        0.550 8.7623E-09
        0.600 9.5589E-09
        0.650 1.5541E-08
        0.700 1.1152E-08
        0.800 1.2745E-08
        0.900 1.4338E-08
        1.000 2.3909E-08
        1.200 2.8691E-08
        1.400 1.2323E-07
        1.600 8.9440E-08
        1.800 2.4560E-07
        2.000 5.3407E-07
        2.200 1.5743E-06
        2.400 2.8805E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -5.94e-07 1.27e-08 -3.65e-11 3.93e-07 3.72e-10 0.26
    nd: 1.568832
    Vd: 56.363897
    glass_code: 569563
    density:
      - value: 2890
    thermal_expansion:
      - temperature_range: 243 343
        value: 8e-06
      - temperature_range: 293 573
        value: 9.3e-06
    dPgF: -0.0014
    resistance:
        climatic: 2.0
        acid: 1.0
        phosphate: 2.0