# 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: 2.5692173 -0.010022582 2 0.016067095 -2 0.00039868115 -4 -1.5698671e-05 -6 1.1774033e-06 -8
  - type: tabulated k
    data: |
        0.290 9.8511E-06
        0.300 6.2813E-06
        0.310 2.8576E-06
        0.320 1.3221E-06
        0.330 6.6936E-07
        0.340 3.4895E-07
        0.350 1.9315E-07
        0.360 1.2292E-07
        0.370 8.3618E-08
        0.380 5.4927E-08
        0.390 3.1191E-08
        0.400 3.1991E-08
        0.420 3.3591E-08
        0.440 1.7551E-08
        0.460 1.8349E-08
        0.480 1.1476E-08
        0.500 1.1955E-08
        0.550 8.7623E-09
        0.600 9.5589E-09
        0.650 1.5541E-08
        0.700 1.1152E-08
        0.800 1.2745E-08
        1.060 1.6887E-08
        1.500 2.3897E-08
        2.000 2.8909E-07
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 1.61e-06 1.28e-08 -2.14e-10 5.61e-07 1.14e-09 0.186
    nd: 1.61720
    Vd: 54.0
    glass_code: 617540
    density:
      - value: 3460
    thermal_expansion:
      - temperature_range: 243 343
        value: 7e-06
      - temperature_range: 293 573
        value: 8.4e-06
    dPgF: -0.0053
    resistance:
        climatic: 1.0
        acid: 1.0