# 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: 2.564248 -0.01337038 2 0.01398205 -2 0.0007030773 -4 -4.206054e-05 -6 2.098576e-06 -8
  - type: tabulated k
    data: |
        0.330 2.7569E-06
        0.340 1.2075E-06
        0.350 5.1897E-07
        0.360 2.5762E-07
        0.370 1.3249E-07
        0.380 8.5878E-08
        0.390 5.3213E-08
        0.400 3.5208E-08
        0.420 2.6846E-08
        0.440 2.4596E-08
        0.460 1.8349E-08
        0.480 1.9146E-08
        0.500 1.5947E-08
        0.550 1.3150E-08
        0.600 1.4345E-08
        0.650 1.0355E-08
        0.700 5.5705E-11
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 20.0 °C
    n_d: 1.614050
    V_d: 55.061200
    glass_code: 614551
    glass_status: preferred
    density: 3.57 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 7.3e-06 K<sup>-1</sup>
    ΔP_gF: -0.0015
