# 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: 3.0092545 -0.014428442 2 0.024950143 -2 0.0006532589 -4 -1.7536585e-05 -6 2.6440099e-06 -8
  - type: tabulated k
    data: |
        0.320 1.5825E-05
        0.330 7.4323E-06
        0.340 2.9428E-06
        0.350 1.3002E-06
        0.360 6.3568E-07
        0.370 3.5306E-07
        0.380 2.1945E-07
        0.390 1.3965E-07
        0.400 9.3675E-08
        0.420 6.4114E-08
        0.440 4.2271E-08
        0.460 4.0489E-08
        0.480 2.6832E-08
        0.500 1.1955E-08
        0.550 4.3790E-09
        0.600 1.4345E-08
        0.650 1.0355E-08
        0.700 1.6736E-08
        0.800 1.2745E-08
        1.060 1.6887E-08
        1.500 2.3897E-08
        2.000 4.3563E-07
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 5.27e-06 1.73e-08 -7.19e-11 6.68e-07 9.93e-10 0.203
    nd: 1.75550
    Vd: 45.6
    glass_code: 756456
    density:
      - value: 4250
    thermal_expansion:
      - temperature_range: 243 343
        value: 5.9e-06
      - temperature_range: 293 573
        value: 8e-06
    dPgF: -0.0085
    resistance:
        climatic: 1.0
        acid: 4.0