# 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 3
    wavelength_range: 0.3 0.7
    coefficients: 2.6546711 -0.012819365 2 0.015197193 -2 0.00050420821 -4 -3.4995634e-05 -6 2.0492682e-06 -8
  - type: tabulated k
    data: |
        0.300 6.0297E-06
        0.310 4.0969E-06
        0.320 2.7472E-06
        0.330 1.7682E-06
        0.340 1.0835E-06
        0.350 6.5654E-07
        0.360 3.6622E-07
        0.370 2.1051E-07
        0.380 1.2660E-07
        0.390 8.4947E-08
        0.400 5.7818E-08
        0.420 3.3591E-08
        0.440 2.8124E-08
        0.460 2.2030E-08
        0.480 1.5310E-08
        0.500 1.1955E-08
        0.550 8.7623E-09
        0.600 9.5589E-09
        0.650 5.1751E-09
        0.700 5.5732E-09
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -7.36e-07 1.43e-08 -2.88e-12 5.38e-07 1.11e-09 0.119
    nd: 1.642495
    Vd: 58.369399
    glass_code: 643584
    glass_status: special
    density:
      - value: 3640
    thermal_expansion:
      - temperature_range: 243 343
        value: 6.4e-06
      - temperature_range: 293 573
        value: 7.8e-06
    dPgF: -0.0055
    resistance:
        climatic: 3.0
        acid: 53.2
        phosphate: 4.2