# 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: 2.6248172 -0.010251149 2 0.0143793 -2 0.00024017461 -4 -1.041901e-06 -6 1.0237991e-07 -8
  - type: tabulated k
    data: |
        0.270 6.1177E-06
        0.280 5.6842E-06
        0.290 4.1028E-06
        0.300 3.0647E-06
        0.310 2.4863E-06
        0.320 1.3827E-06
        0.330 9.1424E-07
        0.340 6.7572E-07
        0.350 5.4594E-07
        0.360 4.7233E-07
        0.370 3.7639E-07
        0.380 2.7855E-07
        0.390 1.8214E-07
        0.400 1.1340E-07
        0.420 6.0709E-08
        0.440 3.1655E-08
        0.460 1.8349E-08
        0.480 1.1476E-08
        0.500 7.9657E-09
        0.550 8.7623E-09
        0.600 9.5589E-09
        0.650 1.0355E-08
        0.700 1.1152E-08
        0.800 1.2745E-08
        1.060 1.6887E-08
        1.500 5.9833E-08
        2.000 3.7033E-07
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -9.6e-06 1.03e-08 -7.48e-11 3.87e-07 1.56e-10 0.188
    nd: 1.63246
    Vd: 63.8
    glass_code: 632638
    density:
      - value: 4290
    thermal_expansion:
      - temperature_range: 243 343
        value: 9.3e-06
      - temperature_range: 293 573
        value: 1.14e-05
    dPgF: 0.0041
    resistance:
        climatic: 1.0
        acid: 5.0