# 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: 3.106256 -0.0130242 2 0.03000569 -2 -0.0002794596 -4 0.0001479538 -6 -6.924513e-06 -8
  - type: tabulated k
    data: |
        0.340 1.2460E-05
        0.350 4.2172E-06
        0.360 1.7127E-06
        0.370 8.0804E-07
        0.380 4.5608E-07
        0.390 2.7230E-07
        0.400 1.8007E-07
        0.420 9.1481E-08
        0.440 6.0036E-08
        0.460 4.0489E-08
        0.480 2.2987E-08
        0.500 1.5947E-08
        0.550 8.7623E-09
        0.600 9.5589E-09
        0.650 5.1751E-09
        0.700 5.5732E-09
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 20.0 °C
    nd: 1.785900
    Vd: 44.174079
    glass_code: 786442
    glass_status: preferred
    density: 4.27 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 7.4e-06 K<sup>-1</sup>
    dPgF: -0.007
