# 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: 2.6368942 -0.00998234 2 0.017151413 -2 0.00011644223 -4 3.4189945e-05 -6 -1.8645959e-06 -8
  - type: tabulated k
    data: |
        0.300 6.1522E-06
        0.310 3.3710E-06
        0.320 2.0504E-06
        0.330 1.1843E-06
        0.340 6.5151E-07
        0.350 3.7829E-07
        0.360 2.0175E-07
        0.370 1.2019E-07
        0.380 8.8991E-08
        0.390 5.9534E-08
        0.400 4.8108E-08
        0.420 4.0350E-08
        0.440 4.2271E-08
        0.460 3.6790E-08
        0.480 3.0681E-08
        0.500 1.9944E-08
        0.550 2.1939E-08
        0.600 2.3933E-08
        0.650 1.5541E-08
        0.700 1.6736E-08
        0.800 1.2745E-08
        1.060 4.2282E-08
        1.500 5.9833E-08
        2.000 4.1928E-07
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 1.1e-06 1.41e-08 -2.56e-10 4.99e-07 4.12e-10 0.193
    nd: 1.63854
    Vd: 55.5
    glass_code: 639555
    density:
      - value: 3350
    thermal_expansion:
      - temperature_range: 243 343
        value: 6.7e-06
      - temperature_range: 293 573
        value: 8.4e-06
    dPgF: -0.0008
    resistance:
        climatic: 1.0
        acid: 3.0