# 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: 2.9854628 -0.0065859032 2 0.026407911 -2 0.00084695423 -4 -3.2505558e-05 -6 3.1878545e-06 -8
  - type: tabulated k
    data: |
        0.280 9.5114E-06
        0.290 5.2012E-06
        0.300 3.3971E-06
        0.310 2.7424E-06
        0.320 1.2755E-06
        0.330 8.0495E-07
        0.340 5.0740E-07
        0.350 3.3084E-07
        0.360 2.3887E-07
        0.370 1.7593E-07
        0.380 9.8348E-08
        0.390 7.8574E-08
        0.400 5.4578E-08
        0.420 3.6968E-08
        0.440 2.1072E-08
        0.460 1.4672E-08
        0.480 1.5310E-08
        0.500 1.5947E-08
        0.550 1.7542E-08
        0.600 1.9137E-08
        0.650 2.0732E-08
        0.700 2.2326E-08
        0.800 2.5516E-08
        1.060 3.3809E-08
        1.500 4.7842E-08
        2.000 6.3790E-08
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 5.13e-06 1.39e-08 -3.39e-10 9.92e-07 9.74e-10 0.216
    nd: 1.75106
    Vd: 43.1
    glass_code: 751431
    density:
      - value: 5240
    thermal_expansion:
      - temperature_range: 243 343
        value: 5.9e-06
      - temperature_range: 293 573
        value: 9.7e-06
    dPgF: -0.004
    resistance:
        climatic: 1.0
        acid: 4.0