# 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: 2.189197 -0.0097642231 2 0.0086917382 -2 0.00023646623 -4 -1.7699987e-05 -6 9.6989631e-07 -8
  - type: tabulated k
    data: |
        0.270 2.4215E-06
        0.280 1.0472E-06
        0.290 4.2168E-07
        0.300 1.7582E-07
        0.310 8.0232E-08
        0.320 5.9253E-08
        0.330 4.7700E-08
        0.340 4.0892E-08
        0.350 3.3625E-08
        0.360 2.8792E-08
        0.370 2.9592E-08
        0.380 3.0392E-08
        0.390 3.1191E-08
        0.400 3.1991E-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 2.6340E-08
        0.600 2.3933E-08
        0.650 2.5928E-08
        0.700 1.6736E-08
        0.800 1.2745E-08
        1.060 1.6887E-08
        1.500 2.6554E-07
        2.000 5.1762E-07
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -7.46e-06 1.15e-08 -2.45e-10 3.01e-07 2.4e-09 0.169
    nd: 1.48749
    Vd: 70.4
    glass_code: 487704
    density:
      - value: 2450
    thermal_expansion:
      - temperature_range: 243 343
        value: 8.8e-06
      - temperature_range: 293 573
        value: 9.8e-06
    dPgF: 0.0032
    resistance:
        climatic: 1.0
        acid: 5.0