# 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: 2.5918508 -0.010567563 2 0.014411695 -2 0.00063226961 -4 -5.7927037e-05 -6 3.4193172e-06 -8
  - type: tabulated k
    data: |
        0.290 8.8080E-06
        0.300 4.7281E-06
        0.310 2.5898E-06
        0.320 1.4810E-06
        0.330 8.1568E-07
        0.340 4.7496E-07
        0.350 2.7802E-07
        0.360 1.5903E-07
        0.370 9.8803E-08
        0.380 6.7269E-08
        0.390 4.6905E-08
        0.400 3.8428E-08
        0.420 3.0216E-08
        0.440 2.8124E-08
        0.460 1.8349E-08
        0.480 1.9146E-08
        0.500 1.1955E-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 5.9833E-08
        2.000 4.6837E-07
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -1.08e-06 1.69e-08 -2.15e-10 4.4e-07 6.37e-10 0.19
    nd: 1.62299
    Vd: 58.1
    glass_code: 623581
    density:
      - value: 3670
    thermal_expansion:
      - temperature_range: 243 343
        value: 6.8e-06
      - temperature_range: 293 573
        value: 8e-06
    dPgF: -0.0023
    resistance:
        climatic: 3.0
        acid: 4.0