# 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 - Lightweight 
DATA:
  - type: formula 2
    wavelength_range: 0.37 2.4
    coefficients: 0 1.61549392 0.0119830897 0.262433239 0.059651024 2.09426189 181.657554
  - type: tabulated k
    data: |
        0.370 7.0899E-06
        0.380 2.6961E-06
        0.390 1.2429E-06
        0.400 6.7075E-07
        0.420 2.3896E-07
        0.440 1.3201E-07
        0.460 9.2677E-08
        0.480 6.9381E-08
        0.500 5.2065E-08
        0.550 2.6340E-08
        0.600 2.3933E-08
        0.650 3.6335E-08
        0.700 3.3523E-08
        0.800 1.2745E-08
        0.900 1.4338E-08
        1.000 1.5931E-08
        1.200 1.9118E-08
        1.400 6.7046E-08
        1.600 8.9440E-08
        1.800 2.1649E-07
        2.000 3.7033E-07
        2.200 9.5337E-07
        2.400 1.4065E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -1.13e-06 1.15e-08 -4.29e-11 8.62e-07 1.18e-09 0.295
    nd: 1.728250
    Vd: 28.460599
    glass_code: 728285
    density:
      - value: 3060
    thermal_expansion:
      - temperature_range: 243 343
        value: 8e-06
      - temperature_range: 293 573
        value: 9.7e-06
    dPgF: 0.0123
    resistance:
        climatic: 1.0
        acid: 1.0
        phosphate: 1.0