# 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: 2.676809 -0.01021733 2 0.01773895 -2 2.822472e-05 -4 4.3274e-05 -6 -2.158473e-06 -8
  - type: tabulated k
    data: |
        0.320 1.1727E-05
        0.330 6.6327E-06
        0.340 3.9764E-06
        0.350 2.2866E-06
        0.360 1.2785E-06
        0.370 7.3156E-07
        0.380 3.8656E-07
        0.390 2.3525E-07
        0.400 1.4323E-07
        0.420 6.7523E-08
        0.440 4.9366E-08
        0.460 3.3094E-08
        0.480 1.5310E-08
        0.500 3.9809E-09
        0.550 4.3790E-09
        0.600 1.4345E-08
        0.650 1.5541E-08
        0.700 5.5732E-09
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 20.0 °C
    n_d: 1.651000
    V_d: 56.171381
    glass_code: 651562
    glass_status: preferred
    density: 3.28 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 8e-06 K<sup>-1</sup>
    ΔP_gF: -0.0012
