# 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 1.60673056 0.0077504614 0.36641564 0.0289967611 1.31761804 93.0720709
  - type: tabulated k
    data: |
        0.330 9.2084E-06
        0.340 3.3492E-06
        0.350 1.4228E-06
        0.360 6.7529E-07
        0.370 3.4312E-07
        0.380 1.9677E-07
        0.390 1.2346E-07
        0.400 8.3855E-08
        0.420 5.0514E-08
        0.440 3.5190E-08
        0.460 2.5714E-08
        0.480 1.9146E-08
        0.500 1.1955E-08
        0.550 8.7623E-09
        0.600 1.4345E-08
        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 2.8691E-08
        1.400 1.0072E-07
        1.600 1.1511E-07
        1.800 2.8938E-07
        2.000 7.6618E-07
        2.200 2.4381E-06
        2.400 9.1298E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 6.57e-06 1.45e-08 -3.29e-11 4.46e-07 4.6e-10 0.256
    nd: 1.743198
    Vd: 49.339444
    glass_code: 743493
    density:
      - value: 4059
    thermal_expansion:
      - temperature_range: 243 343
        value: 5.4e-06
      - temperature_range: 293 573
        value: 6.6e-06
    dPgF: -0.0085
    resistance:
        climatic: 2.0
        acid: 52.0
        phosphate: 2.0