# 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="https://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="https://refractiveindex.info/download/data/2016/sumita_2016-02-01.pdf">SUMITA optical glass data book</a>
DATA:
  - type: formula 3
    wavelength_range: 0.4 1.55
    coefficients: 4.2994108 -0.014091413 2 0.097855062 -2 0.0076857652 -4 -0.00046786841 -6 0.00012218724 -8
  - type: tabulated k
    data: |
        0.400 1.9511E-05
        0.420 8.5307E-06
        0.440 1.7875E-06
        0.460 6.1304E-07
        0.480 2.7023E-07
        0.500 1.3330E-07
        0.550 2.9208E-08
        0.600 3.1863E-08
        0.650 5.1803E-08
        0.700 5.5788E-08
        0.800 4.2484E-08
        1.060 5.6291E-08
        1.500 7.9657E-08
        2.000 3.7267E-07
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 1.64e-05 4.6e-08 -2.91e-10 3.47e-06 -3e-09 0.301
    nd: 2.15400
    Vd: 17.2
    glass_code: 154172
    density:
      - value: 7100
    thermal_expansion:
      - temperature_range: 243 343
        value: 8.6e-06
      - temperature_range: 293 573
        value: 1.01e-05
    dPgF: 0.0498
    resistance:
        climatic: 1.0
        acid: 5.0