# 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: 2.362448 -0.01634943 2 0.008894781 -2 0.002311903 -4 -0.000257494 -6 1.457859e-05 -8
  - type: tabulated k
    data: |
        0.310 5.0330E-06
        0.320 1.2587E-06
        0.330 3.9607E-07
        0.340 1.6741E-07
        0.350 9.6344E-08
        0.360 2.5900E-08
        0.370 1.4759E-08
        0.380 2.1242E-08
        0.390 3.1051E-09
        0.400 6.3726E-09
        0.420 1.3396E-08
        0.440 7.0098E-09
        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 5.1751E-09
        0.700 5.5732E-09
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 20.0 °C
    n_d: 1.548139
    V_d: 45.867807
    glass_code: 548459
    glass_status: preferred
    density: 2.95 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 9.7e-06 K<sup>-1</sup>
    ΔP_gF: -0.0018
