# 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: 2.97145551 -0.0123084336 2 0.0229406443 -2 0.000555750122 -4 -1.48240363e-05 -6 1.43842628e-06 -8 -0.00011444912 4
  - type: tabulated k
    data: |
        0.280 8.7166E-06
        0.290 5.8287E-06
        0.300 4.2302E-06
        0.310 3.2300E-06
        0.320 2.1492E-06
        0.330 1.4305E-06
        0.340 9.2665E-07
        0.350 5.5273E-07
        0.360 3.0184E-07
        0.370 1.6345E-07
        0.380 7.9663E-08
        0.390 3.7468E-08
        0.400 9.5636E-09
        0.420 3.3439E-09
        0.440 3.5032E-09
        0.460 3.6624E-09
        0.480 3.8216E-09
        0.500 3.9809E-09
        0.550 4.3790E-09
        0.600 4.7770E-09
        0.650 1.0355E-08
        0.700 1.6736E-08
        0.800 5.1134E-08
        0.900 7.1656E-09
        1.000 7.9617E-09
        1.200 9.5541E-09
        1.400 1.1146E-08
        1.600 1.2796E-07
        1.800 3.0401E-07
        2.000 7.9961E-07
        2.200 2.2380E-06
        2.400 7.9358E-06
CONDITIONS:
    temperature: 296
PROPERTIES:
    nd: 1.742999
    Vd: 49.277592
    glass_status: preferred
    density:
      - value: 4290
    thermal_expansion:
      - temperature_range: 243 343
        value: 7.2e-06
    dPgF: -0.0078