# 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: 0.4 0.7
    coefficients: 2.602245 -0.002282728 2 0.0313239 -2 -0.001109815 -4 0.0002844724 -6 -1.205447e-05 -8
  - type: tabulated k
    data: |
        0.330 5.7964E-06
        0.340 1.7693E-06
        0.350 6.2150E-07
        0.360 2.5135E-07
        0.370 1.3249E-07
        0.380 8.5878E-08
        0.390 4.6905E-08
        0.400 2.8778E-08
        0.420 2.0114E-08
        0.440 1.4034E-08
        0.460 1.0998E-08
        0.480 1.1476E-08
        0.500 1.1955E-08
        0.550 1.3150E-08
        0.600 9.5589E-09
        0.650 5.1751E-09
        0.700 5.5707E-10
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 20.0 °C
    nd: 1.639800
    Vd: 34.563664
    glass_code: 640346
    glass_status: preferred
    density: 3.78 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 9.9e-06 K<sup>-1</sup>
    dPgF: 0.0022
