# 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: 2.5830562 -0.01131971 2 0.018817464 -2 0.00027063309 -4 2.1527561e-05 -6 7.7761941e-07 -8
  - type: tabulated k
    data: |
        0.340 8.7776E-06
        0.350 3.4286E-06
        0.360 1.5067E-06
        0.370 7.5430E-07
        0.380 4.1071E-07
        0.390 2.4531E-07
        0.400 1.5658E-07
        0.420 9.1481E-08
        0.440 6.3599E-08
        0.460 5.5324E-08
        0.480 4.2250E-08
        0.500 2.3945E-08
        0.550 1.7542E-08
        0.600 1.9137E-08
        0.650 1.5541E-08
        0.700 1.6736E-08
        0.800 1.9127E-08
        1.060 1.6887E-08
        1.500 4.7842E-08
        2.000 3.7033E-07
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 20.0 °C
    coefficients_of_thermal_dispersion: 7.3e-07 1.78e-08 -2.34e-10 5.81e-07 1.81e-11 0.234
    n_d: 1.62374
    V_d: 47.1
    glass_code: 624471
    density: 3.02 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 6.7e-06 K<sup>-1</sup>
    coefficient_of_thermal_expansion_2: 9.8e-06 K<sup>-1</sup>
    ΔP_gF: 0.0001
    climatic_resistance: 1.0
    acid_resistance: 2.0
