# 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: 2.8600337 -0.012073452 2 0.026131306 -2 0.00091303268 -4 -3.0467767e-05 -6 4.891802e-06 -8
  - type: tabulated k
    data: |
        0.340 6.0469E-06
        0.350 2.2426E-06
        0.360 1.0465E-06
        0.370 5.3094E-07
        0.380 3.0185E-07
        0.390 1.9203E-07
        0.400 1.2663E-07
        0.420 8.4619E-08
        0.440 6.7167E-08
        0.460 5.5324E-08
        0.480 4.6114E-08
        0.500 4.8035E-08
        0.550 3.5155E-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 6.0004E-07
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 1.49e-05 1.99e-08 -2.6e-10 8.88e-07 7.78e-10 0.234
    nd: 1.71430
    Vd: 38.9
    glass_code: 714389
    density:
      - value: 3720
    thermal_expansion:
      - temperature_range: 243 343
        value: 4.9e-06
      - temperature_range: 293 573
        value: 6e-06
    dPgF: -0.0047
    resistance:
        climatic: 2.0
        acid: 4.0