# 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: 3.3040338 -0.016019748 2 0.037645989 -2 0.0021532464 -4 -0.00020498123 -6 2.7623217e-05 -8
  - type: tabulated k
    data: |
        0.360 1.3193E-05
        0.370 6.4990E-06
        0.380 3.5612E-06
        0.390 2.1388E-06
        0.400 1.3958E-06
        0.420 7.2498E-07
        0.440 4.7556E-07
        0.460 3.5732E-07
        0.480 2.7309E-07
        0.500 2.0409E-07
        0.550 1.1081E-07
        0.600 6.7317E-08
        0.650 4.6764E-08
        0.700 3.3523E-08
        0.800 3.8312E-08
        1.060 3.3809E-08
        1.500 5.9833E-08
        2.000 4.8477E-07
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 20.0 °C
    coefficients_of_thermal_dispersion: 3.35e-06 1.38e-08 -2.07e-11 8.23e-07 1.31e-09 0.268
    n_d: 1.85000
    V_d: 32.4
    glass_code: 850324
    density: 3.99 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 6e-06 K<sup>-1</sup>
    coefficient_of_thermal_expansion_2: 7.6e-06 K<sup>-1</sup>
    ΔP_gF: 0.0085
    climatic_resistance: 1.0
    acid_resistance: 3.0
