# 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=\"http://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=\"http://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: 3.3195074 -0.0085801253 2 0.039978521 -2 0.0014465322 -4 -3.0453007e-05 -6 7.8005005e-06 -8
  - type: tabulated k
    data: |
        0.350 8.6998E-06
        0.360 5.0595E-06
        0.370 3.4866E-06
        0.380 2.5381E-06
        0.390 1.8610E-06
        0.400 1.3761E-06
        0.420 8.3900E-07
        0.440 5.7317E-07
        0.460 4.1016E-07
        0.480 2.8542E-07
        0.500 1.9572E-07
        0.550 5.7271E-08
        0.600 4.3166E-08
        0.650 3.1129E-08
        0.700 4.4743E-08
        0.800 3.8312E-08
        1.060 1.6887E-08
        1.500 2.3897E-08
        2.000 3.1863E-08
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 20.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: 7.61e-06 2.08e-08 -1.25e-10 1.18e-06 1.01e-09 0.239
    nd: 1.85588
    Vd: 33.0
    glass_code: 856330
    density: 5.14 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 7.1e-06 K<sup>-1</sup>
      - temperature_range: 20 300 °C
        coefficient: 8.3e-06 K<sup>-1</sup>
    dPgF: -0.0017
    climatic_resistance: 1.0
    acid_resistance: 4.0
