# 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 1.59034337 0.0093273434 0.138464579 0.0427498654 1.21988043 119.251777
  - type: tabulated k
    data: |
        0.340 1.2460E-05
        0.350 4.6255E-06
        0.360 2.1027E-06
        0.370 1.0502E-06
        0.380 5.6345E-07
        0.390 3.2010E-07
        0.400 2.0034E-07
        0.420 1.0525E-07
        0.440 7.4313E-08
        0.460 5.9043E-08
        0.480 4.2250E-08
        0.500 2.7950E-08
        0.550 1.3150E-08
        0.600 1.9137E-08
        0.650 2.0732E-08
        0.700 1.6736E-08
        0.800 1.2745E-08
        0.900 2.1518E-08
        1.000 2.3909E-08
        1.200 1.9118E-08
        1.400 4.4653E-08
        1.600 5.1032E-08
        1.800 1.2950E-07
        2.000 3.0530E-07
        2.200 9.1643E-07
        2.400 3.1039E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 3.39e-06 1.19e-08 -3.43e-11 5.18e-07 5.64e-10 0.261
    nd: 1.670029
    Vd: 47.230916
    glass_code: 670473
    density:
      - value: 3480
    thermal_expansion:
      - temperature_range: 243 343
        value: 6.8e-06
      - temperature_range: 293 573
        value: 8e-06
    dPgF: -0.0024
    resistance:
        climatic: 2.0
        acid: 51.2
        phosphate: 1.0