# 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: 2.6590501 -0.011944106 2 0.02185629 -2 0.0011761807 -4 -7.8567029e-05 -6 8.1413835e-06 -8
  - type: tabulated k
    data: |
        0.340 1.8690E-05
        0.350 6.3309E-06
        0.360 2.1998E-06
        0.370 8.9453E-07
        0.380 4.5608E-07
        0.390 2.6215E-07
        0.400 1.6998E-07
        0.420 9.8359E-08
        0.440 6.7167E-08
        0.460 5.5324E-08
        0.480 4.2250E-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 1.6887E-08
        1.500 2.3897E-08
        2.000 2.7289E-07
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 20.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: 1.95e-06 1.4e-08 -2.27e-10 6.84e-07 1.13e-09 0.259
    nd: 1.65128
    Vd: 38.3
    glass_code: 651383
    density: 2.96 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: 9.2e-06 K<sup>-1</sup>
    dPgF: -0.0006
    climatic_resistance: 1.0
    acid_resistance: 1.0
