# 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: 2.2705778 -0.010059376 2 0.010414999 -2 0.00028872517 -4 -2.2214495e-05 -6 1.4258559e-06 -8
  - type: tabulated k
    data: |
        0.290 8.6072E-06
        0.300 4.4050E-06
        0.310 2.1755E-06
        0.320 1.0970E-06
        0.330 5.6637E-07
        0.340 3.0316E-07
        0.350 1.7234E-07
        0.360 1.0503E-07
        0.370 8.6649E-08
        0.380 7.9663E-08
        0.390 5.6372E-08
        0.400 3.8428E-08
        0.420 4.0350E-08
        0.440 4.2271E-08
        0.460 3.6790E-08
        0.480 3.8389E-08
        0.500 3.1959E-08
        0.550 2.1939E-08
        0.600 1.4345E-08
        0.650 1.5541E-08
        0.700 1.1152E-08
        0.800 1.2745E-08
        1.060 1.6887E-08
        1.500 1.0792E-07
        2.000 1.1721E-06
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 6.84e-07 2.05e-08 -1.55e-10 4.18e-07 2.74e-10 0.178
    nd: 1.51633
    Vd: 64.1
    glass_code: 516641
    density:
      - value: 2520
    thermal_expansion:
      - temperature_range: 243 343
        value: 6.3e-06
      - temperature_range: 293 573
        value: 8.5e-06
    dPgF: -0.0014
    resistance:
        climatic: 1.0
        acid: 1.0