# 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 1.7388333 0.00980244105 0.15093743 0.0433179685 1.12118445 101.214625
  - type: tabulated k
    data: |
        0.340 9.4875E-06
        0.350 3.7519E-06
        0.360 1.6611E-06
        0.370 8.4704E-07
        0.380 4.5608E-07
        0.390 2.7908E-07
        0.400 1.8681E-07
        0.420 1.0525E-07
        0.440 7.4313E-08
        0.460 5.5324E-08
        0.480 4.2250E-08
        0.500 2.7950E-08
        0.550 1.3150E-08
        0.600 1.9137E-08
        0.650 1.5541E-08
        0.700 1.6736E-08
        0.800 1.2745E-08
        0.900 7.1656E-09
        1.000 1.5931E-08
        1.200 9.5541E-09
        1.400 3.3473E-08
        1.600 3.8255E-08
        1.800 1.2950E-07
        2.000 3.5405E-07
        2.200 1.0460E-06
        2.400 4.2617E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 2.38e-06 1.36e-08 -3.69e-11 6.21e-07 6.44e-10 0.235
    nd: 1.720002
    Vd: 46.024571
    glass_code: 720460
    density:
      - value: 4100
    thermal_expansion:
      - temperature_range: 243 343
        value: 6.6e-06
      - temperature_range: 293 573
        value: 8e-06
    dPgF: -0.0035
    resistance:
        climatic: 2.0
        acid: 52.2
        phosphate: 2.2