# 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: 2.4895419 -0.011359477 2 0.012448401 -2 0.00055781133 -4 -5.0555753e-05 -6 2.8679508e-06 -8
  - type: tabulated k
    data: |
        0.280 6.3443E-06
        0.290 4.8930E-06
        0.300 3.0051E-06
        0.310 1.7198E-06
        0.320 9.8958E-07
        0.330 5.6637E-07
        0.340 3.1834E-07
        0.350 1.8124E-07
        0.360 1.0801E-07
        0.370 6.5499E-08
        0.380 3.9569E-08
        0.390 2.4928E-08
        0.400 2.5567E-08
        0.420 2.3478E-08
        0.440 2.4596E-08
        0.460 2.5714E-08
        0.480 2.6832E-08
        0.500 1.9944E-08
        0.550 2.1939E-08
        0.600 2.3933E-08
        0.650 2.5928E-08
        0.700 1.6736E-08
        0.800 1.2745E-08
        1.060 1.6887E-08
        1.500 2.3897E-08
        2.000 3.3778E-07
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 2.52e-06 1.71e-08 -2.45e-10 3.45e-07 4.68e-10 0.211
    nd: 1.58913
    Vd: 61.2
    glass_code: 589612
    density:
      - value: 3320
    thermal_expansion:
      - temperature_range: 243 343
        value: 5.4e-06
      - temperature_range: 293 573
        value: 6.7e-06
    dPgF: -0.0012
    resistance:
        acid: 2.0