# 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: 2.821152 -0.012842 2 0.01957428 -2 0.0008519712 -4 -3.820468e-05 -6 2.424251e-06 -8
  - type: tabulated k
    data: |
        0.320 1.1727E-05
        0.330 4.9819E-06
        0.340 2.2835E-06
        0.350 1.1998E-06
        0.360 6.7529E-07
        0.370 4.1004E-07
        0.380 2.4557E-07
        0.390 1.5919E-07
        0.400 1.1011E-07
        0.420 5.7307E-08
        0.440 3.5190E-08
        0.460 2.2030E-08
        0.480 7.6471E-09
        0.500 3.9809E-09
        0.550 4.3790E-09
        0.600 4.7770E-09
        0.650 5.1751E-09
        0.700 5.5707E-10
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 20.0 °C
    nd: 1.697000
    Vd: 48.530571
    glass_code: 697485
    glass_status: preferred
    density: 4.02 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 8.3e-06 K<sup>-1</sup>
    dPgF: -0.0018
