# 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: 2.4208616 -0.0057307899 2 0.011396384 -2 0.00014964607 -4 3.8084377e-06 -6 -3.2734834e-07 -8
  - type: tabulated k
    data: |
        0.280 7.8887E-06
        0.290 5.3138E-06
        0.300 3.5611E-06
        0.310 2.5341E-06
        0.320 1.1969E-06
        0.330 6.4575E-07
        0.340 3.3973E-07
        0.350 1.7234E-07
        0.360 9.3172E-08
        0.370 5.6481E-08
        0.380 3.6507E-08
        0.390 3.1191E-08
        0.400 2.5567E-08
        0.420 2.6846E-08
        0.440 2.8124E-08
        0.460 2.9402E-08
        0.480 3.0681E-08
        0.500 2.3945E-08
        0.550 1.3150E-08
        0.600 1.4345E-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 3.1863E-08
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -2.47e-05 -1.68e-09 -2.49e-11 3.77e-07 3.45e-10 0.178
    nd: 1.56627
    Vd: 71.3
    glass_code: 569713
    density:
      - value: 4460
    thermal_expansion:
      - temperature_range: 243 343
        value: 1.32e-05
      - temperature_range: 293 573
        value: 1.56e-05
    dPgF: 0.0207
    resistance:
        climatic: 1.0
        acid: 1.0