# 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: 2.4804566 -0.01071977 2 0.0135632 -2 0.00034918608 -4 -2.3041786e-05 -6 1.5937217e-06 -8
  - type: tabulated k
    data: |
        0.310 6.2618E-06
        0.320 2.4240E-06
        0.330 1.0166E-06
        0.340 4.6209E-07
        0.350 2.2317E-07
        0.360 1.0801E-07
        0.370 8.3618E-08
        0.380 4.8774E-08
        0.390 3.1191E-08
        0.400 6.3726E-09
        0.420 6.6912E-09
        0.440 7.0098E-09
        0.460 7.3285E-09
        0.480 7.6471E-09
        0.500 7.9657E-09
        0.550 8.7623E-09
        0.600 9.5589E-09
        0.650 1.0355E-08
        0.700 1.1152E-08
        0.800 1.2745E-08
        1.060 5.0764E-08
        1.500 1.4411E-07
        2.000 5.6702E-07
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 1.46e-06 1.54e-08 -2.77e-11 5.04e-07 3.24e-10 0.172
    nd: 1.58700
    Vd: 59.6
    glass_code: 587596
    density:
      - value: 3000
    thermal_expansion:
      - temperature_range: 243 343
        value: 7.2e-06
      - temperature_range: 293 573
        value: 9.1e-06
    dPgF: -0.0031
    resistance:
        climatic: 2.0
        acid: 4.0