# 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: 2.787118 -0.006950628 2 0.03016016 -2 0.00207609 -4 -0.0001855962 -6 2.047325e-05 -8
  - type: tabulated k
    data: |
        0.360 1.3193E-05
        0.370 5.0490E-06
        0.380 2.0362E-06
        0.390 9.3449E-07
        0.400 4.8008E-07
        0.420 1.7848E-07
        0.440 8.8648E-08
        0.460 5.9043E-08
        0.480 3.4533E-08
        0.500 1.5947E-08
        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: 1.698950
    V_d: 30.089686
    glass_code: 699301
    glass_status: preferred
    density: 4.12 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 1e-05 K<sup>-1</sup>
    ΔP_gF: 0.0058
