# 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: 2.4948235 -0.0091228463 2 0.013721276 -2 0.00023830265 -4 4.1915859e-06 -6 -3.8958137e-07 -8
  - type: tabulated k
    data: |
        0.320 1.0694E-05
        0.330 4.5922E-06
        0.340 1.8060E-06
        0.350 7.0634E-07
        0.360 2.9548E-07
        0.370 1.6034E-07
        0.380 1.0147E-07
        0.390 5.9534E-08
        0.400 5.7818E-08
        0.420 5.3908E-08
        0.440 3.1655E-08
        0.460 2.9402E-08
        0.480 3.0681E-08
        0.500 3.1959E-08
        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 5.0764E-08
        1.500 3.0221E-07
        2.000 1.9984E-06
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 20.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: -8.26e-07 2.08e-08 -1.4e-10 5.32e-07 -2.69e-10 0.175
    nd: 1.59170
    Vd: 60.7
    glass_code: 592607
    density: 3.24 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 9.5e-06 K<sup>-1</sup>
      - temperature_range: 20 300 °C
        coefficient: 1.14e-05 K<sup>-1</sup>
    dPgF: 0.0028
    climatic_resistance: 1.0
    acid_resistance: 6.0
