# 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: 0.4 1.55
    coefficients: 4.2785429 -0.014012371 2 0.096019323 -2 0.0077567166 -4 -0.00051560398 -6 0.00012285966 -8
  - type: tabulated k
    data: |
        0.400 2.7626E-05
        0.420 6.7826E-06
        0.440 1.2167E-06
        0.460 3.5909E-07
        0.480 1.7951E-07
        0.500 1.0653E-07
        0.550 7.3129E-08
        0.600 7.9777E-08
        0.650 1.0376E-07
        0.700 1.1174E-07
        0.800 1.0637E-07
        1.060 5.6291E-08
        1.500 7.9657E-08
        2.000 3.7267E-07
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 20.0 °C
    coefficients_of_thermal_dispersion: 1.59e-05 2.25e-08 -1.48e-10 3.28e-06 3.23e-09 0.333
    n_d: 2.14780
    V_d: 17.3
    glass_code: 148173
    density: 7.03 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 7.9e-06 K<sup>-1</sup>
    coefficient_of_thermal_expansion_2: 9.7e-06 K<sup>-1</sup>
    ΔP_gF: 0.0481
    climatic_resistance: 1.0
    acid_resistance: 4.0
