# 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 
    range: 0.36 1.55
    coefficients: 3.527437 -0.014640706 2 0.040393831 -2 0.0015495078 -4 -4.5667249e-05 -6 9.0971269e-06 -8
  - type: tabulated k
    data: |
        0.350 1.1189E-05
        0.360 4.7128E-06
        0.370 2.2992E-06
        0.380 1.3213E-06
        0.390 8.3949E-07
        0.400 5.6637E-07
        0.420 3.2256E-07
        0.440 2.2038E-07
        0.460 1.4943E-07
        0.480 1.0455E-07
        0.500 6.8222E-08
        0.550 3.0745E-08
        0.600 2.3933E-08
        0.650 3.6335E-08
        0.700 2.7922E-08
        0.800 1.9127E-08
        1.060 1.6887E-08
        1.500 2.3897E-08
        2.000 2.5671E-07
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 20.0 °C
    coefficients_of_thermal_dispersion: 1.83e-08 1.49e-08 -2.69e-10 8.28e-07 7.87e-10 0.248
    n_d: 1.91100
    V_d: 35.2
    glass_code: 911352
    density: 4.9 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 6.9e-06 K<sup>-1</sup>
    coefficient_of_thermal_expansion_2: 8.8e-06 K<sup>-1</sup>
    ΔP_gF: -0.0019
    climatic_resistance: 1.0
    acid_resistance: 1.0
