# 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: 2.402616 -0.005310264 2 0.01706231 -2 0.000992587 -4 -0.0001107158 -6 9.212954e-06 -8
  - type: tabulated k
    data: |
        0.310 8.6503E-06
        0.320 2.0906E-06
        0.330 6.1902E-07
        0.340 2.0801E-07
        0.350 8.7708E-08
        0.360 6.3729E-08
        0.370 4.4500E-08
        0.380 3.9569E-08
        0.390 3.1191E-08
        0.400 2.5567E-08
        0.420 2.3478E-08
        0.440 2.1072E-08
        0.460 2.2030E-08
        0.480 1.5310E-08
        0.500 1.1955E-08
        0.550 4.3790E-09
        0.600 9.5589E-09
        0.650 2.0732E-08
        0.700 1.1141E-10
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 20.0 °C
    n_d: 1.567320
    V_d: 42.699778
    glass_code: 567427
    glass_status: preferred
    density: 3.11 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 1.1e-05 K<sup>-1</sup>
    ΔP_gF: -0.002
