# 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: 0.4 1.55
    coefficients: 3.4434117 -0.015474743 2 0.033695975 -2 0.0012878574 -4 -4.547423e-05 -6 3.867959e-06 -8
  - type: tabulated k
    data: |
        0.300 1.1846E-05
        0.310 8.3416E-06
        0.320 4.4384E-06
        0.330 2.9114E-06
        0.340 1.8971E-06
        0.350 1.2300E-06
        0.360 7.8244E-07
        0.370 5.2038E-07
        0.380 3.4222E-07
        0.390 2.3860E-07
        0.400 1.7670E-07
        0.420 1.1908E-07
        0.440 9.5838E-08
        0.460 7.3953E-08
        0.480 6.1610E-08
        0.500 4.8035E-08
        0.550 3.5155E-08
        0.600 3.8351E-08
        0.650 3.6335E-08
        0.700 2.7922E-08
        0.800 1.2745E-08
        1.060 1.6887E-08
        1.500 4.7842E-08
        2.000 3.5405E-07
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 1.16e-06 1.35e-08 -2.1e-10 7.19e-07 4.1e-10 0.207
    nd: 1.88300
    Vd: 40.8
    glass_code: 883408
    density:
      - value: 5540
    thermal_expansion:
      - temperature_range: 243 343
        value: 6.3e-06
      - temperature_range: 293 573
        value: 7.9e-06
    dPgF: -0.0095
    resistance:
        climatic: 1.0
        acid: 1.0