# 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: 2.5225185 -0.0094325814 2 0.012753583 -2 0.00028565036 -4 -8.905806e-06 -6 2.8110143e-07 -8
  - type: tabulated k
    data: |
        0.280 1.0496E-05
        0.290 8.2515E-06
        0.300 6.1210E-06
        0.310 4.2717E-06
        0.320 2.5250E-06
        0.330 1.4624E-06
        0.340 8.1468E-07
        0.350 4.5265E-07
        0.360 2.6389E-07
        0.370 1.5103E-07
        0.380 1.0147E-07
        0.390 8.4947E-08
        0.400 6.1061E-08
        0.420 9.4918E-08
        0.440 8.1473E-08
        0.460 7.3953E-08
        0.480 4.9982E-08
        0.500 4.4010E-08
        0.550 2.1939E-08
        0.600 3.3540E-08
        0.650 4.1547E-08
        0.700 5.0361E-08
        0.800 5.7555E-08
        1.060 4.2282E-08
        1.500 1.0792E-07
        2.000 1.2064E-06
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -1.33e-05 1.14e-08 -3e-11 4.03e-07 3.8e-10 0.173
    nd: 1.59950
    Vd: 65.6
    glass_code: 600656
    density:
      - value: 3490
    thermal_expansion:
      - temperature_range: 243 343
        value: 1.05e-05
      - temperature_range: 293 573
        value: 1.28e-05
    dPgF: 0.0077
    resistance:
        climatic: 2.0
        acid: 4.0