# 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: 2.8065086 -0.012084694 2 0.018509723 -2 0.00045689652 -4 -1.5275984e-05 -6 1.0018509e-06 -8
  - type: tabulated k
    data: |
        0.310 7.3413E-06
        0.320 3.6448E-06
        0.330 2.0795E-06
        0.340 1.2372E-06
        0.350 7.1713E-07
        0.360 4.4878E-07
        0.370 2.5834E-07
        0.380 1.6787E-07
        0.390 1.2023E-07
        0.400 9.3675E-08
        0.420 7.7770E-08
        0.440 6.0036E-08
        0.460 5.9043E-08
        0.480 5.7730E-08
        0.500 4.8035E-08
        0.550 4.3988E-08
        0.600 3.8351E-08
        0.650 4.1547E-08
        0.700 2.7922E-08
        0.800 1.9127E-08
        1.060 1.6887E-08
        1.500 9.5877E-08
        2.000 6.1658E-07
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -3.41e-06 2.03e-08 -1.26e-10 4.75e-07 9.33e-11 0.17
    nd: 1.69100
    Vd: 54.8
    glass_code: 691548
    density:
      - value: 4059
    thermal_expansion:
      - temperature_range: 293 573
        value: 8.6e-06
    dPgF: -0.004
    resistance:
        climatic: 1.0
        acid: 4.0