# 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: 2.5165762 -0.01183779 2 0.017631594 -2 0.00095834052 -4 -6.7623905e-05 -6 6.2543393e-06 -8
  - type: tabulated k
    data: |
        0.340 1.6814E-05
        0.350 5.9287E-06
        0.360 2.0671E-06
        0.370 8.3920E-07
        0.380 4.1765E-07
        0.390 2.3860E-07
        0.400 1.5324E-07
        0.420 8.4619E-08
        0.440 5.2919E-08
        0.460 4.0489E-08
        0.480 3.0681E-08
        0.500 1.9944E-08
        0.550 1.3150E-08
        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 5.9833E-08
        2.000 4.6837E-07
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 20.0 °C
    coefficients_of_thermal_dispersion: -1.33e-06 1.61e-08 -2.3e-10 5.78e-07 6.96e-10 0.262
    n_d: 1.60323
    V_d: 42.5
    glass_code: 603425
    density: 2.71 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 7.9e-06 K<sup>-1</sup>
    coefficient_of_thermal_expansion_2: 1.02e-05 K<sup>-1</sup>
    ΔP_gF: 0.0005
    climatic_resistance: 2.0
    acid_resistance: 3.0
