# 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: 3.4399333 -0.014633437 2 0.037625197 -2 0.0021748752 -4 -0.00016417982 -6 1.5817576e-05 -8
  - type: tabulated k
    data: |
        0.350 1.0896E-05
        0.360 5.3409E-06
        0.370 2.9594E-06
        0.380 1.7696E-06
        0.390 1.1114E-06
        0.400 7.3024E-07
        0.420 3.5958E-07
        0.440 2.3907E-07
        0.460 1.6089E-07
        0.480 1.1635E-07
        0.500 8.0384E-08
        0.550 3.9569E-08
        0.600 3.3540E-08
        0.650 3.6335E-08
        0.700 2.7922E-08
        0.800 1.9127E-08
        1.060 1.6887E-08
        1.500 2.3897E-08
        2.000 3.2154E-07
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -1.08e-06 1.12e-08 -9.02e-11 8.61e-07 1.32e-09 0.245
    nd: 1.88660
    Vd: 35.0
    glass_code: 887350
    density:
      - value: 4870
    thermal_expansion:
      - temperature_range: 243 343
        value: 7.7e-06
      - temperature_range: 293 573
        value: 9.5e-06
    dPgF: -0.0045
    resistance:
        climatic: 1.0
        acid: 1.0