# 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: 3.0176028 -0.01512239 2 0.021959514 -2 0.00052144528 -4 -1.8693935e-05 -6 1.6369365e-06 -8
  - type: tabulated k
    data: |
        0.280 1.1806E-05
        0.290 6.3437E-06
        0.300 4.8162E-06
        0.310 3.9580E-06
        0.320 2.5113E-06
        0.330 1.7375E-06
        0.340 1.1489E-06
        0.350 7.3883E-07
        0.360 4.5549E-07
        0.370 2.8416E-07
        0.380 1.7747E-07
        0.390 1.1379E-07
        0.400 7.4066E-08
        0.420 3.3591E-08
        0.440 2.8124E-08
        0.460 7.3285E-09
        0.480 7.6471E-09
        0.500 7.9657E-09
        0.550 8.7623E-09
        0.600 9.5589E-09
        0.650 1.0355E-08
        0.700 1.1152E-08
        0.800 1.2745E-08
        1.060 1.6887E-08
        1.500 5.9833E-08
        2.000 6.3313E-07
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 9.54e-07 1.19e-08 -2.27e-10 5.55e-07 9.65e-10 0.153
    nd: 1.75500
    Vd: 52.4
    glass_code: 755524
    density:
      - value: 4510
    thermal_expansion:
      - temperature_range: 243 343
        value: 5.7e-06
      - temperature_range: 293 573
        value: 7e-06
    dPgF: -0.009
    resistance:
        climatic: 1.0
        acid: 4.0