# 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: 0.36 1.55
    coefficients: 2.5082353 -0.0073346094 2 0.012618342 -2 0.00023225231 -4 -9.8397157e-06 -6 6.9870981e-07 -8
  - type: tabulated k
    data: |
        0.270 2.3235E-05
        0.280 1.9439E-05
        0.290 1.8189E-05
        0.300 1.3962E-05
        0.310 9.7914E-06
        0.320 6.3728E-06
        0.330 3.9203E-06
        0.340 2.2177E-06
        0.350 1.1552E-06
        0.360 5.9087E-07
        0.370 2.8883E-07
        0.380 1.5234E-07
        0.390 8.3093E-08
        0.400 5.3185E-08
        0.420 2.2304E-08
        0.440 2.3366E-08
        0.460 2.4428E-08
        0.480 2.5490E-08
        0.500 2.6552E-08
        0.550 2.9208E-08
        0.600 3.1863E-08
        0.650 3.4518E-08
        0.700 3.7173E-08
        0.800 4.2484E-08
        1.060 5.6291E-08
        1.500 7.9657E-08
        2.000 1.0621E-07
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -1.29e-05 6.41e-09 -4.23e-11 4.04e-07 7.68e-10 0.173
    nd: 1.59500
    Vd: 67.8
    glass_code: 595678
    density:
      - value: 4050
    thermal_expansion:
      - temperature_range: 243 343
        value: 1.01e-05
      - temperature_range: 293 573
        value: 1.29e-05
    dPgF: 0.0129
    resistance:
        climatic: 1.0
        acid: 1.0