# 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: 2.5587726 -0.0098095616 2 0.014840563 -2 0.0003193166 -4 -1.016436e-05 -6 6.6518794e-07 -8
  - type: tabulated k
    data: |
        0.280 8.5043E-06
        0.290 4.8549E-06
        0.300 2.6540E-06
        0.310 1.5201E-06
        0.320 8.7933E-07
        0.330 4.9248E-07
        0.340 2.8206E-07
        0.350 1.6346E-07
        0.360 1.0206E-07
        0.370 6.5499E-08
        0.380 4.5703E-08
        0.390 3.7468E-08
        0.400 2.8778E-08
        0.420 3.0216E-08
        0.440 3.1655E-08
        0.460 1.8349E-08
        0.480 1.9146E-08
        0.500 1.1955E-08
        0.550 1.3150E-08
        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 4.6837E-07
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 4.04e-07 1.86e-08 -3.68e-10 4.13e-07 4.69e-10 0.197
    nd: 1.61272
    Vd: 58.6
    glass_code: 613586
    density:
      - value: 3580
    thermal_expansion:
      - temperature_range: 243 343
        value: 6.1e-06
      - temperature_range: 293 573
        value: 7.6e-06
    dPgF: -0.0006
    resistance:
        climatic: 3.0
        acid: 4.0