# 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: 2.2984199 -0.0098977917 2 0.010454435 -2 -1.1762246e-05 -4 2.220678e-05 -6 -1.2212713e-06 -8
  - type: tabulated k
    data: |
        0.280 7.6008E-06
        0.290 4.7622E-06
        0.300 2.5268E-06
        0.310 1.3737E-06
        0.320 7.3597E-07
        0.330 4.2061E-07
        0.340 2.4923E-07
        0.350 1.3993E-07
        0.360 9.9097E-08
        0.370 9.5760E-08
        0.380 6.7269E-08
        0.390 5.9534E-08
        0.400 4.8108E-08
        0.420 4.0350E-08
        0.440 4.5817E-08
        0.460 4.7899E-08
        0.480 3.8389E-08
        0.500 3.5972E-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 3.0221E-07
        2.000 2.6241E-06
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 3.49e-07 1.51e-08 -7.35e-11 3.65e-07 5.07e-10 0.174
    nd: 1.52500
    Vd: 70.4
    glass_code: 525704
    density:
      - value: 2600
    thermal_expansion:
      - temperature_range: 243 343
        value: 8.3e-06
      - temperature_range: 293 573
        value: 8.7e-06
    dPgF: 0.0062
    resistance:
        climatic: 2.0
        acid: 1.0