# 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: 3.070131 -0.012037535 2 0.023978866 -2 0.00056153238 -4 -1.0529871e-05 -6 1.1710915e-06 -8
  - type: tabulated k
    data: |
        0.280 6.6750E-06
        0.290 4.9123E-06
        0.300 3.3578E-06
        0.310 3.5516E-06
        0.320 1.5363E-06
        0.330 1.0478E-06
        0.340 6.6186E-07
        0.350 4.1684E-07
        0.360 2.4511E-07
        0.370 1.4483E-07
        0.380 9.5226E-08
        0.390 4.3756E-08
        0.400 4.1652E-08
        0.420 2.0114E-08
        0.440 2.4596E-08
        0.460 1.8349E-08
        0.480 1.1476E-08
        0.500 7.9657E-09
        0.550 8.7623E-09
        0.600 1.4345E-08
        0.650 1.0355E-08
        0.700 1.1152E-08
        0.800 2.5516E-08
        1.060 1.6887E-08
        1.500 3.5864E-08
        2.000 4.8477E-07
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -3.11e-07 1.35e-08 -2.34e-10 5.76e-07 8.89e-10 0.201
    nd: 1.77200
    Vd: 50.0
    glass_code: 772500
    density:
      - value: 5200
    thermal_expansion:
      - temperature_range: 243 343
        value: 7.3e-06
      - temperature_range: 293 573
        value: 9e-06
    dPgF: -0.0051
    resistance:
        climatic: 1.0
        acid: 3.0