# 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: 2.2812358 -0.010469171 2 0.010938493 -2 0.00025045867 -4 -1.2796276e-05 -6 7.9827772e-07 -8
  - type: tabulated k
    data: |
        0.270 1.0121E-05
        0.280 9.0788E-06
        0.290 5.8872E-06
        0.300 3.4879E-06
        0.310 1.9534E-06
        0.320 1.0658E-06
        0.330 5.7616E-07
        0.340 3.1226E-07
        0.350 1.6642E-07
        0.360 8.1359E-08
        0.370 5.3481E-08
        0.380 3.6507E-08
        0.390 2.1801E-08
        0.400 2.2360E-08
        0.420 2.3478E-08
        0.440 2.4596E-08
        0.460 1.8349E-08
        0.480 1.9146E-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 5.9833E-08
        2.000 5.8353E-07
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 5.1e-08 2.09e-08 -1.11e-11 4.38e-07 5.79e-10 0.176
    nd: 1.52025
    Vd: 62.2
    glass_code: 523623
    density:
      - value: 2430
    thermal_expansion:
      - temperature_range: 243 343
        value: 6.7e-06
      - temperature_range: 293 573
        value: 9.2e-06
    dPgF: -0.0046
    resistance:
        climatic: 2.0
        acid: 4.0