# 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: 3.17068141 -0.0126020903 2 0.030537023 -2 0.000826049797 -4 -4.87613819e-06 -6 2.63470792e-06 -8 -2.27507217e-05 4
  - type: tabulated k
    data: |
        0.320 8.9294E-06
        0.330 3.8595E-06
        0.340 1.9301E-06
        0.350 1.1154E-06
        0.360 6.7529E-07
        0.370 4.1004E-07
        0.380 2.6202E-07
        0.390 1.8214E-07
        0.400 1.2994E-07
        0.420 8.4619E-08
        0.440 6.7167E-08
        0.460 5.5324E-08
        0.480 4.6114E-08
        0.500 3.9989E-08
        0.550 3.0745E-08
        0.600 3.3540E-08
        0.650 2.5928E-08
        0.700 2.2326E-08
        0.800 1.2745E-08
        0.900 7.1656E-09
        1.000 2.3909E-08
        1.200 9.5541E-09
        1.400 1.1146E-08
        1.600 7.6624E-08
        1.800 1.5844E-07
        2.000 4.3563E-07
        2.200 1.0646E-06
        2.400 4.2617E-06
CONDITIONS:
    temperature: 296
PROPERTIES:
    nd: 1.806040
    Vd: 40.774175
    glass_status: preferred
    density:
      - value: 4470
    thermal_expansion:
      - temperature_range: 243 343
        value: 6.9e-06
    dPgF: -0.0063