# 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: 2.542124 0.002965422 2 0.02316274 -2 -0.001681083 -4 0.0002235719 -6 -1.000551e-05 -8
  - type: tabulated k
    data: |
        0.310 8.6503E-06
        0.320 3.7425E-06
        0.330 1.7172E-06
        0.340 8.1468E-07
        0.350 4.2007E-07
        0.360 2.5448E-07
        0.370 1.4793E-07
        0.380 9.5226E-08
        0.390 6.2700E-08
        0.400 4.4878E-08
        0.420 3.0216E-08
        0.440 2.8124E-08
        0.460 2.2030E-08
        0.480 1.1476E-08
        0.500 7.9657E-09
        0.550 4.3790E-09
        0.600 4.7770E-09
        0.650 5.1751E-09
        0.700 5.5732E-09
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 20.0 °C
    n_d: 1.612720
    V_d: 58.472693
    glass_code: 613585
    glass_status: preferred
    density: 3.5 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 7e-06 K<sup>-1</sup>
    ΔP_gF: -0.0023
