# 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: 0.4 1.55
    coefficients: 3.8354813 -0.015056123 2 0.060329996 -2 0.002453809 -4 1.7392287e-05 -6 1.7174222e-05 -8
  - type: tabulated k
    data: |
        0.360 2.5531E-05
        0.370 1.4213E-05
        0.380 8.0488E-06
        0.390 4.9955E-06
        0.400 3.3247E-06
        0.420 1.6933E-06
        0.440 9.7318E-07
        0.460 6.5159E-07
        0.480 4.5362E-07
        0.500 3.2219E-07
        0.550 1.3190E-07
        0.600 9.5781E-08
        0.650 8.6425E-08
        0.700 7.4421E-08
        0.800 4.2484E-08
        1.060 5.6291E-08
        1.500 7.9657E-08
        2.000 2.1263E-07
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -1.71e-06 1.58e-08 -2.57e-10 1.04e-06 1.1e-09 0.282
    nd: 2.00680
    Vd: 26.2
    density:
      - value: 4800
    thermal_expansion:
      - temperature_range: 243 343
        value: 7e-06
      - temperature_range: 293 573
        value: 8.5e-06
    dPgF: 0.0099
    resistance:
        climatic: 1.0
        acid: 1.0