# 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: 2.6498456 -0.013078949 2 0.014887079 -2 0.0003621869 -4 -1.1506273e-05 -6 6.1300945e-07 -8
  - type: tabulated k
    data: |
        0.290 9.0280E-06
        0.300 5.8571E-06
        0.310 3.8617E-06
        0.320 2.5250E-06
        0.330 1.5320E-06
        0.340 9.3429E-07
        0.350 5.5613E-07
        0.360 3.4352E-07
        0.370 1.9474E-07
        0.380 1.3291E-07
        0.390 9.1333E-08
        0.400 6.4307E-08
        0.420 5.0514E-08
        0.440 4.2271E-08
        0.460 3.6790E-08
        0.480 3.8389E-08
        0.500 3.1959E-08
        0.550 2.6340E-08
        0.600 2.3933E-08
        0.650 1.5541E-08
        0.700 1.6736E-08
        0.800 1.2745E-08
        1.060 1.6887E-08
        1.500 2.3897E-08
        2.000 4.6837E-07
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -2.24e-06 1.48e-08 -2.56e-10 3.66e-07 4.69e-10 0.182
    nd: 1.64050
    Vd: 60.1
    glass_code: 641601
    density:
      - value: 3660
    thermal_expansion:
      - temperature_range: 243 343
        value: 5.9e-06
      - temperature_range: 293 573
        value: 8e-06
    dPgF: -0.0029
    resistance:
        climatic: 1.0
        acid: 5.0