# 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: 3.07248878 -0.0130910046 2 0.0257175166 -2 0.000468797447 -4 8.26140166e-06 -6 4.96911029e-07 -8 -0.000149735345 4
  - type: tabulated k
    data: |
        0.280 1.0261E-05
        0.290 6.4926E-06
        0.300 4.5290E-06
        0.310 3.6255E-06
        0.320 2.2704E-06
        0.330 1.5226E-06
        0.340 1.0040E-06
        0.350 6.5654E-07
        0.360 4.3208E-07
        0.370 2.6477E-07
        0.380 1.8068E-07
        0.390 1.2993E-07
        0.400 1.0681E-07
        0.420 7.7770E-08
        0.440 6.7167E-08
        0.460 5.5324E-08
        0.480 4.6114E-08
        0.500 3.9989E-08
        0.550 3.9569E-08
        0.600 5.2812E-08
        0.650 6.2446E-08
        0.700 7.8537E-08
        0.800 1.3511E-07
        0.900 2.1518E-08
        1.000 3.9889E-08
        1.200 1.9118E-08
        1.400 3.3473E-08
        1.600 8.9440E-08
        1.800 2.1649E-07
        2.000 5.5054E-07
        2.200 1.4788E-06
        2.400 6.2740E-06
CONDITIONS:
    temperature: 296
PROPERTIES:
    nd: 1.773870
    Vd: 47.253126
    glass_status: preferred
    density:
      - value: 4630
    thermal_expansion:
      - temperature_range: 243 343
        value: 7.4e-06
    dPgF: -0.0088