# 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: 3.0728806 -0.014815338 2 0.024064142 -2 0.00049961497 -4 1.2852807e-06 -6 5.2262074e-07 -8
  - type: tabulated k
    data: |
        0.300 9.4617E-06
        0.310 5.5133E-06
        0.320 2.6087E-06
        0.330 1.5557E-06
        0.340 9.3811E-07
        0.350 5.6635E-07
        0.360 3.4675E-07
        0.370 2.0735E-07
        0.380 1.3923E-07
        0.390 8.1759E-08
        0.400 6.4307E-08
        0.420 4.3734E-08
        0.440 3.1655E-08
        0.460 2.5714E-08
        0.480 1.5310E-08
        0.500 1.5947E-08
        0.550 1.3150E-08
        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 3.5864E-08
        2.000 5.1762E-07
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 2.19e-06 1.73e-08 -1.56e-10 5.97e-07 3.56e-10 0.161
    nd: 1.77250
    Vd: 49.6
    glass_code: 773496
    density:
      - value: 4440
    thermal_expansion:
      - temperature_range: 243 343
        value: 5.7e-06
      - temperature_range: 293 573
        value: 7.2e-06
    dPgF: -0.0077
    resistance:
        climatic: 1.0
        acid: 3.0