# 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: 2.703071 -0.011555097 2 0.016440907 -2 0.00044044678 -4 -2.1866961e-05 -6 1.3531002e-06 -8
  - type: tabulated k
    data: |
        0.280 9.8549E-06
        0.290 6.1701E-06
        0.300 4.0543E-06
        0.310 2.6253E-06
        0.320 1.7651E-06
        0.330 1.0674E-06
        0.340 6.7919E-07
        0.350 4.0715E-07
        0.360 2.5135E-07
        0.370 1.5723E-07
        0.380 1.1087E-07
        0.390 9.1333E-08
        0.400 6.4307E-08
        0.420 5.7307E-08
        0.440 5.2919E-08
        0.460 4.4192E-08
        0.480 3.8389E-08
        0.500 3.9989E-08
        0.550 3.5155E-08
        0.600 2.8734E-08
        0.650 2.5928E-08
        0.700 1.6736E-08
        0.800 1.2745E-08
        1.060 2.5344E-08
        1.500 1.1997E-07
        2.000 6.4970E-07
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -2.69e-06 1.38e-08 -5.45e-11 4.86e-07 7.71e-10 0.155
    nd: 1.65830
    Vd: 57.3
    glass_code: 658573
    density:
      - value: 3850
    thermal_expansion:
      - temperature_range: 243 343
        value: 5.6e-06
      - temperature_range: 293 573
        value: 8.5e-06
    dPgF: -0.004
    resistance:
        climatic: 1.0
        acid: 4.0