# 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: 2.268721 -0.005772466 2 0.01533408 -2 -0.001159258 -4 0.0001697392 -6 -8.270431e-06 -8
  - type: tabulated k
    data: |
        0.290 4.2291E-06
        0.300 2.1875E-06
        0.310 1.1009E-06
        0.320 5.6823E-07
        0.330 2.7668E-07
        0.340 1.6166E-07
        0.350 8.7708E-08
        0.360 5.7876E-08
        0.370 4.1512E-08
        0.380 3.3448E-08
        0.390 1.5557E-08
        0.400 1.2758E-08
        0.420 1.3396E-08
        0.440 1.0520E-08
        0.460 7.3285E-09
        0.480 3.8216E-09
        0.500 3.9809E-09
        0.550 4.3790E-09
        0.600 4.7770E-09
        0.650 1.0355E-08
        0.700 -0.0000E+00
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 20.0 °C
    nd: 1.518210
    Vd: 65.027672
    glass_code: 518650
    glass_status: preferred
    density: 2.52 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 8.2e-06 K<sup>-1</sup>
    dPgF: -0.0032
