# 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: 3.127487 -0.0637466 2 -0.0009890957 -2 0.01363913 -4 -0.001588824 -6 9.646333e-05 -8
  - type: tabulated k
    data: |
        0.380 6.6747E-06
        0.390 2.6923E-06
        0.400 1.2276E-06
        0.420 3.5214E-07
        0.440 1.5389E-07
        0.460 8.8925E-08
        0.480 5.3854E-08
        0.500 3.1959E-08
        0.550 1.3150E-08
        0.600 1.4345E-08
        0.650 1.5541E-08
        0.700 5.5732E-09
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 20.0 °C
    nd: 1.784721
    Vd: 25.833679
    glass_code: 785258
    glass_status: preferred
    density: 4.81 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 8.4e-06 K<sup>-1</sup>
    dPgF: 0.0105
