# 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: 0.29 2.4
    coefficients: 0 1.11073292 0.00464181248 0.859347773 0.0192989261 1.26707433 87.3917698
  - type: tabulated k
    data: |
        0.290 9.0280E-06
        0.300 6.3485E-06
        0.310 4.6800E-06
        0.320 3.3342E-06
        0.330 2.2163E-06
        0.340 1.4276E-06
        0.350 9.1495E-07
        0.360 5.6852E-07
        0.370 3.4312E-07
        0.380 2.0324E-07
        0.390 1.3316E-07
        0.400 9.3675E-08
        0.420 6.0709E-08
        0.440 4.2271E-08
        0.460 3.3094E-08
        0.480 2.2987E-08
        0.500 1.5947E-08
        0.550 1.3150E-08
        0.600 1.4345E-08
        0.650 1.5541E-08
        0.700 1.1152E-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 7.6624E-08
        1.800 2.1649E-07
        2.000 6.6629E-07
        2.200 2.2380E-06
        2.400 9.1298E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 3.12e-06 1.34e-08 -3.54e-11 4.23e-07 4.31e-10 0.226
    nd: 1.740999
    Vd: 52.636502
    glass_code: 741527
    density:
      - value: 4040
    thermal_expansion:
      - temperature_range: 243 343
        value: 5.7e-06
      - temperature_range: 293 573
        value: 7e-06
    dPgF: -0.0096
    resistance:
        climatic: 1.0
        acid: 51.0
        phosphate: 2.0