# 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: 2.4809256 -0.011763845 2 0.013309488 -2 0.00032545605 -4 -9.9643058e-06 -6 2.0790854e-07 -8
  - type: tabulated k
    data: |
        0.290 8.4225E-06
        0.300 5.5945E-06
        0.310 3.4199E-06
        0.320 2.0165E-06
        0.330 1.1434E-06
        0.340 6.2752E-07
        0.350 3.3398E-07
        0.360 1.5298E-07
        0.370 9.2720E-08
        0.380 5.4927E-08
        0.390 2.8058E-08
        0.400 1.2758E-08
        0.420 1.0042E-08
        0.440 1.0520E-08
        0.460 7.3285E-09
        0.480 7.6471E-09
        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 4.7842E-08
        2.000 3.3778E-07
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 4.57e-06 1.39e-08 -1.08e-10 5.35e-07 5.99e-10 0.138
    nd: 1.58680
    Vd: 59.8
    glass_code: 587598
    density:
      - value: 2640
    thermal_expansion:
      - temperature_range: 243 343
        value: 6.4e-06
      - temperature_range: 293 573
        value: 8.5e-06
    dPgF: -0.0046
    resistance:
        climatic: 1.0
        acid: 2.0