# 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: 2.2744024 -0.01070289 2 0.010577306 -2 0.00022857431 -4 -7.2914225e-06 -6 2.4124054e-07 -8
  - type: tabulated k
    data: |
        0.280 1.0049E-05
        0.290 5.3138E-06
        0.300 2.9225E-06
        0.310 1.5476E-06
        0.320 8.3653E-07
        0.330 4.3917E-07
        0.340 2.4034E-07
        0.350 1.2242E-07
        0.360 6.3729E-08
        0.370 3.5546E-08
        0.380 3.6507E-08
        0.390 3.1191E-08
        0.400 2.8778E-08
        0.420 3.0216E-08
        0.440 3.1655E-08
        0.460 3.3094E-08
        0.480 3.4533E-08
        0.500 3.5972E-08
        0.550 3.5155E-08
        0.600 3.8351E-08
        0.650 4.1547E-08
        0.700 2.7922E-08
        0.800 1.2745E-08
        1.060 1.6887E-08
        1.500 2.3897E-08
        2.000 3.1863E-08
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 4.91e-06 2.06e-08 1.52e-11 4.18e-07 1.61e-10 0.165
    nd: 1.51760
    Vd: 63.5
    glass_code: 518635
    density:
      - value: 2390
    thermal_expansion:
      - temperature_range: 243 343
        value: 5.4e-06
      - temperature_range: 293 573
        value: 7.3e-06
    dPgF: -0.0044
    resistance:
        climatic: 2.0
        acid: 1.0