# 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: 2.809631 0.1142767 2 0.1251064 -2 -0.0221709 -4 0.002916176 -6 -0.0001356855 -8
  - type: tabulated k
    data: |
        0.360 6.3234E-06
        0.370 2.4850E-06
        0.380 1.0786E-06
        0.390 5.4111E-07
        0.400 2.7928E-07
        0.420 1.0525E-07
        0.440 5.2919E-08
        0.460 2.5714E-08
        0.480 1.1476E-08
        0.500 3.9809E-09
        0.550 4.3790E-09
        0.600 4.7770E-09
        0.650 5.1751E-09
        0.700 -0.0000E+00
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 20.0 °C
    n_d: 1.756920
    V_d: 31.704801
    glass_code: 757317
    glass_status: preferred
    density: 4.58 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 6.4e-06 K<sup>-1</sup>
    ΔP_gF: -0.0001
