# 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: 2.345943 -0.0077317211 2 0.011783664 -2 0.00025239185 -4 -1.2352344e-05 -6 8.7540057e-07 -8
  - type: tabulated k
    data: |
        0.300 8.5360E-06
        0.310 5.7810E-06
        0.320 3.5920E-06
        0.330 2.0507E-06
        0.340 1.0435E-06
        0.350 5.1226E-07
        0.360 2.4511E-07
        0.370 1.2019E-07
        0.380 6.4179E-08
        0.390 3.1191E-08
        0.400 3.1991E-08
        0.420 3.3591E-08
        0.440 3.5190E-08
        0.460 2.9402E-08
        0.480 2.6832E-08
        0.500 1.5947E-08
        0.550 1.3150E-08
        0.600 1.9137E-08
        0.650 2.5928E-08
        0.700 2.2326E-08
        0.800 1.9127E-08
        1.060 2.5344E-08
        1.500 1.1997E-07
        2.000 2.2898E-06
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -1.51e-05 1.45e-09 -9.02e-11 5.44e-07 3.99e-10 0.176
    nd: 1.54250
    Vd: 62.9
    glass_code: 543629
    density:
      - value: 2900
    thermal_expansion:
      - temperature_range: 243 343
        value: 1.29e-05
      - temperature_range: 293 573
        value: 1.6e-05
    dPgF: 0.0036
    resistance:
        climatic: 2.0
        acid: 3.0