# 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/sumita_2017-02-02.agf">SUMITA Zemax catalog 2017-02-02</a> (obtained from <a href="http://www.sumita-opt.co.jp/en/download/">http://www.sumita-opt.co.jp</a>)<br>See also <a href="https://refractiveindex.info/download/data/2016/sumita_2016-02-01.pdf">SUMITA optical glass data book</a>
DATA:
  - type: formula 3
    wavelength_range: 0.36 1.55
    coefficients: 2.2178347 -0.0055966846 2 0.0083703747 -2 0.0001097485 -4 -3.3983937e-06 -6 2.5836351e-07 -8
  - type: tabulated k
    data: |
        0.270 6.1551E-06
        0.280 4.3808E-06
        0.290 2.9377E-06
        0.300 1.8383E-06
        0.310 1.0741E-06
        0.320 5.8099E-07
        0.330 3.0602E-07
        0.340 1.6454E-07
        0.350 9.0584E-08
        0.360 5.4955E-08
        0.370 3.5546E-08
        0.380 2.7339E-08
        0.390 1.8677E-08
        0.400 1.9156E-08
        0.420 1.6753E-08
        0.440 1.7551E-08
        0.460 1.0998E-08
        0.480 1.1476E-08
        0.500 7.9657E-09
        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
        1.060 1.6887E-08
        1.500 2.3897E-08
        2.000 3.1863E-08
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -1.91e-05 -2.54e-09 -5.06e-11 3.29e-07 5.19e-11 0.188
    nd: 1.49700
    Vd: 81.5
    glass_code: 497815
    density:
      - value: 3600
    thermal_expansion:
      - temperature_range: 243 343
        value: 1.34e-05
      - temperature_range: 293 573
        value: 1.54e-05
    dPgF: 0.0296
    resistance:
        climatic: 1.0
        acid: 3.0