# 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: 3.8410887 -0.015801048 2 0.055983447 -2 0.0030905124 -4 -0.00016655999 -6 2.7794823e-05 -8
  - type: tabulated k
    data: |
        0.370 1.1238E-05
        0.380 6.3616E-06
        0.390 3.9841E-06
        0.400 2.6864E-06
        0.420 1.3786E-06
        0.440 8.2980E-07
        0.460 5.5636E-07
        0.480 3.9821E-07
        0.500 2.8020E-07
        0.550 1.1980E-07
        0.600 6.7317E-08
        0.650 5.1986E-08
        0.700 3.3523E-08
        0.800 2.5516E-08
        1.060 3.3809E-08
        1.500 4.7842E-08
        2.000 1.1180E-07
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 20.0 °C
    coefficients_of_thermal_dispersion: -3.96e-07 1.14e-08 -3.48e-10 1e-06 9.73e-10 0.275
    n_d: 2.00540
    V_d: 27.7
    density: 4.95 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 7.6e-06 K<sup>-1</sup>
    coefficient_of_thermal_expansion_2: 8.5e-06 K<sup>-1</sup>
    ΔP_gF: 0.0064
    climatic_resistance: 1.0
    acid_resistance: 1.0
