# 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="https://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="https://refractiveindex.info/download/data/2017/hikari_2017-04-01.pdf">HIKARI glass data sheets</a>
COMMENTS: |
    Low	Tg	glass
DATA:
  - type: formula 3
    wavelength_range: 0.4 0.7
    coefficients: 2.4767282 -0.0103779856 2 0.013934653 -2 0.000196558619 -4 4.37662846e-07 -6 2.28673729e-07 -8 -9.02510603e-05 4
  - type: tabulated k
    data: |
        0.280 5.9253E-06
        0.290 3.4942E-06
        0.300 2.0710E-06
        0.310 1.1793E-06
        0.320 6.3270E-07
        0.330 3.6571E-07
        0.340 1.9926E-07
        0.350 1.1951E-07
        0.360 7.5470E-08
        0.370 5.0485E-08
        0.380 3.9569E-08
        0.390 3.4328E-08
        0.400 2.8778E-08
        0.420 3.0216E-08
        0.440 3.1655E-08
        0.460 2.9402E-08
        0.480 2.6832E-08
        0.500 2.3945E-08
        0.550 2.1939E-08
        0.600 2.8734E-08
        0.650 3.6335E-08
        0.700 3.3523E-08
        0.800 4.4720E-08
        0.900 7.1656E-09
        1.000 7.9617E-09
        1.200 9.5541E-09
        1.400 1.1146E-08
        1.600 2.5490E-08
        1.800 1.4396E-07
        2.000 2.4054E-07
        2.200 9.1643E-07
        2.400 2.4414E-06
CONDITIONS:
    temperature: 296
PROPERTIES:
    nd: 1.585930
    Vd: 59.652170
    glass_status: preferred
    density:
      - value: 2800
    thermal_expansion:
      - temperature_range: 243 343
        value: 8.9e-06
    dPgF: -0.0033