# 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: 2.8917009 -0.011920903 2 0.022558933 -2 0.00079204231 -4 -4.0820426e-05 -6 4.1373045e-06 -8
  - type: tabulated k
    data: |
        0.340 1.0327E-05
        0.350 3.5554E-06
        0.360 1.3191E-06
        0.370 5.6285E-07
        0.380 2.8852E-07
        0.390 1.8214E-07
        0.400 1.2663E-07
        0.420 8.8048E-08
        0.440 6.7167E-08
        0.460 5.5324E-08
        0.480 4.6114E-08
        0.500 3.9989E-08
        0.550 2.1939E-08
        0.600 2.3933E-08
        0.650 1.5541E-08
        0.700 1.1152E-08
        0.800 1.2745E-08
        1.060 1.6887E-08
        1.500 3.5864E-08
        2.000 3.5405E-07
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -5.4e-07 2.18e-08 -2.46e-10 5.35e-07 -3.35e-10 0.243
    nd: 1.72013
    Vd: 46.0
    glass_code: 720460
    density:
      - value: 3880
    thermal_expansion:
      - temperature_range: 243 343
        value: 8.1e-06
      - temperature_range: 293 573
        value: 8.2e-06
    dPgF: -0.0028
    resistance:
        climatic: 1.0
        acid: 4.0