# 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: 0.33 2.4
    coefficients: 0 1.2936689 0.00800367962 0.132440252 0.0354711196 1.10197293 134.517431
  - type: tabulated k
    data: |
        0.330 1.2093E-05
        0.340 3.6447E-06
        0.350 1.2869E-06
        0.360 4.9949E-07
        0.370 2.2001E-07
        0.380 1.1401E-07
        0.390 6.5868E-08
        0.400 3.8428E-08
        0.420 2.0114E-08
        0.440 2.1072E-08
        0.460 1.8349E-08
        0.480 1.5310E-08
        0.500 1.1955E-08
        0.550 8.7623E-09
        0.600 9.5589E-09
        0.650 1.0355E-08
        0.700 1.1152E-08
        0.800 1.2745E-08
        0.900 1.4338E-08
        1.000 2.3909E-08
        1.200 3.8274E-08
        1.400 1.0072E-07
        1.600 1.2796E-07
        1.800 4.0679E-07
        2.000 9.0035E-07
        2.200 2.2380E-06
        2.400 3.5586E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -5.7e-06 1.05e-08 -3.78e-11 4.4e-07 5.55e-10 0.262
    nd: 1.571351
    Vd: 52.952106
    glass_code: 571530
    density:
      - value: 2980
    thermal_expansion:
      - temperature_range: 243 343
        value: 9.5e-06
      - temperature_range: 293 573
        value: 1.11e-05
    dPgF: -0.0005
    resistance:
        climatic: 2.0
        acid: 1.2
        phosphate: 1.0