# 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: 0.31 2.4
    coefficients: 0 0.867168676 0.00369311003 0.672848343 0.0181652804 1.18456107 132.376147
  - type: tabulated k
    data: |
        0.310 7.9406E-06
        0.320 3.3342E-06
        0.330 1.4762E-06
        0.340 7.0716E-07
        0.350 3.5604E-07
        0.360 1.7421E-07
        0.370 9.8803E-08
        0.380 5.8008E-08
        0.390 4.0610E-08
        0.400 2.8778E-08
        0.420 3.0216E-08
        0.440 3.5190E-08
        0.460 3.3094E-08
        0.480 2.6832E-08
        0.500 1.9944E-08
        0.550 1.3150E-08
        0.600 1.4345E-08
        0.650 2.0732E-08
        0.700 1.1152E-08
        0.800 6.3694E-09
        0.900 1.4338E-08
        1.000 1.5931E-08
        1.200 1.9118E-08
        1.400 6.7046E-08
        1.600 3.8255E-08
        1.800 1.1505E-07
        2.000 2.5671E-07
        2.200 8.7958E-07
        2.400 2.2256E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 3.43e-06 1.37e-08 -3.45e-11 5.05e-07 5.49e-10 0.203
    nd: 1.607379
    Vd: 56.816076
    glass_code: 607568
    density:
      - value: 3530
    thermal_expansion:
      - temperature_range: 243 343
        value: 6.5e-06
      - temperature_range: 293 573
        value: 7.4e-06
    dPgF: -0.0013
    resistance:
        climatic: 2.0
        acid: 5.2
        phosphate: 2.2