# 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: 2.612482 0.007294838 2 0.03844929 -2 -0.002459877 -4 0.0004247475 -6 -1.668865e-05 -8
  - type: tabulated k
    data: |
        0.340 2.9996E-06
        0.350 1.0742E-06
        0.360 4.9949E-07
        0.370 2.9391E-07
        0.380 1.9033E-07
        0.390 1.2346E-07
        0.400 8.7125E-08
        0.420 4.3734E-08
        0.440 2.8124E-08
        0.460 2.2030E-08
        0.480 1.5310E-08
        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: 1.647690
    V_d: 33.841849
    glass_code: 648338
    glass_status: preferred
    density: 3.85 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 9.8e-06 K<sup>-1</sup>
    ΔP_gF: 0.0013
