# 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: 2.1052634 -0.0048076047 2 0.0067206257 -2 8.8399512e-05 -4 -3.9955764e-08 -6 -6.7493689e-08 -8
  - type: tabulated k
    data: |
        0.270 1.1863E-05
        0.280 9.6765E-06
        0.290 6.6519E-06
        0.300 4.1610E-06
        0.310 2.5618E-06
        0.320 1.2214E-06
        0.330 6.1570E-07
        0.340 3.0619E-07
        0.350 1.1951E-07
        0.360 6.6660E-08
        0.370 2.6619E-08
        0.380 9.0855E-09
        0.390 1.5557E-08
        0.400 6.3726E-09
        0.420 1.0042E-08
        0.440 7.0098E-09
        0.460 7.3285E-09
        0.480 7.6471E-09
        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: -2.23e-05 -2.13e-09 9.79e-11 2.57e-07 -1.68e-10 0.221
    nd: 1.45733
    Vd: 89.8
    glass_code: 459900
    density:
      - value: 3720
    thermal_expansion:
      - temperature_range: 243 343
        value: 1.37e-05
      - temperature_range: 293 573
        value: 1.65e-05
    dPgF: 0.0449
    resistance:
        climatic: 1.0
        acid: 2.0