# 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: 2.1858326 -0.0050155632 2 0.0075107775 -2 0.00017770562 -4 -1.2164148e-05 -6 6.1341005e-07 -8
  - type: tabulated k
    data: |
        0.280 8.1321E-06
        0.290 5.7161E-06
        0.300 3.7031E-06
        0.310 2.4130E-06
        0.320 1.1969E-06
        0.330 6.1570E-07
        0.340 3.1226E-07
        0.350 1.5167E-07
        0.360 7.5470E-08
        0.370 6.5499E-08
        0.380 3.0392E-08
        0.390 2.4928E-08
        0.400 1.5955E-08
        0.420 1.6753E-08
        0.440 1.7551E-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 2.3897E-08
        2.000 3.1863E-08
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -2.28e-05 -1.71e-09 6.72e-11 3.39e-07 4.74e-10 0.176
    nd: 1.48563
    Vd: 85.2
    glass_code: 486852
    density:
      - value: 3970
    thermal_expansion:
      - temperature_range: 243 343
        value: 1.29e-05
      - temperature_range: 293 573
        value: 1.63e-05
    dPgF: 0.0381
    resistance:
        climatic: 1.0
        acid: 1.0