# 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 
    range: 0.4 0.7
    coefficients: 2.871638 0.05586319 2 0.08260113 -2 -0.01257133 -4 0.00171414 -6 -7.977217e-05 -8
  - type: tabulated k
    data: |
        0.340 5.7367E-06
        0.350 2.2866E-06
        0.360 1.1048E-06
        0.370 6.2044E-07
        0.380 3.5239E-07
        0.390 2.2189E-07
        0.400 1.4656E-07
        0.420 7.0935E-08
        0.440 3.5190E-08
        0.460 1.8349E-08
        0.480 3.8216E-09
        0.500 3.9809E-09
        0.550 4.3790E-09
        0.600 4.7770E-09
        0.650 5.1751E-09
        0.700 -0.0000E+00
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 20.0 °C
    n_d: 1.749501
    V_d: 35.186731
    glass_code: 750352
    glass_status: preferred
    density: 4.41 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 6.3e-06 K<sup>-1</sup>
    ΔP_gF: -0.0027
