# 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: 3.2643191 -0.016265121 2 0.03202838 -2 0.0015271854 -4 -4.7775544e-05 -6 5.7345907e-06 -8
  - type: tabulated k
    data: |
        0.340 9.4875E-06
        0.350 6.6759E-06
        0.360 3.0239E-06
        0.370 1.5386E-06
        0.380 8.7801E-07
        0.390 5.4851E-07
        0.400 3.7094E-07
        0.420 2.1749E-07
        0.440 1.5024E-07
        0.460 1.1527E-07
        0.480 8.4972E-08
        0.500 6.0135E-08
        0.550 3.0745E-08
        0.600 2.3933E-08
        0.650 1.0355E-08
        0.700 1.1152E-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: 2.04e-06 1.48e-08 -2.22e-10 7.19e-07 7.99e-10 0.248
    nd: 1.83400
    Vd: 37.3
    glass_code: 834373
    density:
      - value: 4180
    thermal_expansion:
      - temperature_range: 243 343
        value: 5.8e-06
      - temperature_range: 293 573
        value: 7.5e-06
    dPgF: -0.0024
    resistance:
        climatic: 1.0
        acid: 3.0