# 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 2
    wavelength_range: 0.3 2.4
    coefficients: 0 1.706024 0.009579771 0.182716 0.04044097 1.204833 127.571
  - type: tabulated k
    data: |
        0.340 9.4875E-06
        0.350 3.9748E-06
        0.360 1.7652E-06
        0.370 8.4704E-07
        0.380 4.5608E-07
        0.390 2.3860E-07
        0.400 1.4990E-07
        0.420 7.7770E-08
        0.440 5.6476E-08
        0.460 4.0489E-08
        0.480 3.0681E-08
        0.500 1.9944E-08
        0.550 8.7623E-09
        0.600 1.4345E-08
        0.650 2.0732E-08
        0.700 1.6736E-08
        0.800 1.2745E-08
        0.900 1.4338E-08
        1.000 2.3909E-08
        1.200 2.8691E-08
        1.400 5.5844E-08
        1.600 8.9440E-08
        1.800 2.3104E-07
        2.400 3.5586E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -1.7708e-06 0.0 0.0 0.0 0.0 0.0
    nd: 1.720002
    Vd: 46.035166
    glass_code: 720460
    glass_status: preferred
    density:
      - value: 4280
    thermal_expansion:
      - temperature_range: 243 343
        value: 8.5e-06
      - temperature_range: 293 573
        value: 9.6e-06
    dPgF: -0.002
    resistance:
        acid: 53.2
        phosphate: 3.2