# 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: 2.0158016 -0.0038179076 2 0.0058067887 -2 4.2558748e-05 -4 7.6622455e-07 -6 1.6716816e-09 -8
  - type: tabulated k
    data: |
        0.270 8.6116E-09
        0.280 8.9305E-09
        0.290 9.2495E-09
        0.300 9.5684E-09
        0.310 1.7329E-08
        0.320 1.0206E-08
        0.330 2.1093E-08
        0.340 1.0844E-08
        0.350 1.1163E-08
        0.360 1.1482E-08
        0.370 1.1801E-08
        0.380 1.5158E-08
        0.390 1.2439E-08
        0.400 1.2758E-08
        0.420 1.3396E-08
        0.440 1.4034E-08
        0.460 1.4672E-08
        0.480 1.5310E-08
        0.500 1.5947E-08
        0.550 1.7542E-08
        0.600 1.9137E-08
        0.650 2.0732E-08
        0.700 2.2326E-08
        0.800 2.5516E-08
        1.060 3.3809E-08
        1.500 4.7842E-08
        2.000 6.3790E-08
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -2.03e-05 -7.73e-09 1.17e-11 3.55e-07 7.78e-10 0.111
    nd: 1.42537
    Vd: 97.8
    glass_code: 425978
    density:
      - value: 3750
    thermal_expansion:
      - temperature_range: 243 343
        value: 1.3e-05
      - temperature_range: 293 573
        value: 1.63e-05
    dPgF: 0.0533
    resistance:
        climatic: 1.0
        acid: 4.0