# 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: 3.7699503 -0.013004151 2 0.072310519 -2 0.0035123072 -4 -1.0361594e-05 -6 3.8615781e-05 -8
  - type: tabulated k
    data: |
        0.380 2.1456E-05
        0.390 1.1376E-05
        0.400 6.6764E-06
        0.420 2.9408E-06
        0.440 1.6254E-06
        0.460 1.0839E-06
        0.480 7.7428E-07
        0.500 5.5524E-07
        0.550 2.3531E-07
        0.600 2.2439E-07
        0.650 2.6059E-07
        0.700 1.8662E-07
        0.800 8.5053E-08
        1.060 5.6291E-08
        1.500 7.9657E-08
        2.000 3.1927E-07
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 8.11e-06 2.15e-08 -1.06e-10 2.16e-06 2.01e-09 0.291
    nd: 2.00170
    Vd: 20.6
    density:
      - value: 5480
    thermal_expansion:
      - temperature_range: 243 343
        value: 7.3e-06
      - temperature_range: 293 573
        value: 9.2e-06
    dPgF: 0.0257
    resistance:
        climatic: 1.0
        acid: 1.0