# 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: 0.34 2.4
    coefficients: 0 1.50847885 0.00812769076 0.158099826 0.0354200898 1.36815368 136.110038
  - type: tabulated k
    data: |
        0.340 5.1329E-06
        0.350 2.1029E-06
        0.360 9.4109E-07
        0.370 4.4408E-07
        0.380 2.3248E-07
        0.390 1.3316E-07
        0.400 8.7125E-08
        0.420 5.0514E-08
        0.440 4.2271E-08
        0.460 3.6790E-08
        0.480 2.6832E-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 7.8260E-08
        1.600 8.9440E-08
        1.800 2.1649E-07
        2.000 4.5199E-07
        2.200 1.3649E-06
        2.400 3.7901E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -8.87e-07 1.45e-08 2.75e-12 6.65e-07 1.72e-09 0.146
    nd: 1.648498
    Vd: 53.023881
    glass_code: 649530
    density:
      - value: 3740
    thermal_expansion:
      - temperature_range: 243 343
        value: 7.1e-06
      - temperature_range: 293 573
        value: 8.3e-06
    dPgF: -0.001
    resistance:
        climatic: 2.0
        acid: 53.2
        phosphate: 4.0