# 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=\"http://refractiveindex.info/download/data/2017/nikon_2017-11.agf\">NIKON Zemax catalog 2017-11</a> (obtained from <a href=\"http://www.nikon.com/products/glass/lineup/materials/optical/\">http://www.nikon.com</a>)<br>See also <a href=\"http://refractiveindex.info/download/data/2017/hikari_2017-04-01.pdf\">HIKARI glass data sheets</a>"
COMMENTS: ""
DATA:
  - type: formula 3 
    wavelength_range: 0.388865 2.05809
    coefficients: 3.25089291 -0.013324411 2 0.0484040988 -2 0.0032638368 -4 -0.000401470701 -6 0.000116583198 -8 -1.27242455e-05 -10 6.96171808e-07 -12
  - type: tabulated k
    data: |
        0.280 -0.0000E+00
        0.290 -0.0000E+00
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 23.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: -5.0562e-06 1.0335e-08 -1.28e-12 1.0873e-06 1.6241e-09 0.2939
    nd: 1.846660
    Vd: 23.796566
    density: 3.53 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 8.1e-06 K<sup>-1</sup>
    dPgF: 0.0171
